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Diffstat (limited to 'src/spell.c')
| -rw-r--r-- | src/spell.c | 8841 |
1 files changed, 8841 insertions, 0 deletions
diff --git a/src/spell.c b/src/spell.c new file mode 100644 index 0000000..8aadb99 --- /dev/null +++ b/src/spell.c @@ -0,0 +1,8841 @@ +/* vi:set ts=8 sts=4 sw=4 noet: + * + * VIM - Vi IMproved by Bram Moolenaar + * + * Do ":help uganda" in Vim to read copying and usage conditions. + * Do ":help credits" in Vim to see a list of people who contributed. + * See README.txt for an overview of the Vim source code. + */ + +/* + * spell.c: code for spell checking + * + * See spellfile.c for the Vim spell file format. + * + * The spell checking mechanism uses a tree (aka trie). Each node in the tree + * has a list of bytes that can appear (siblings). For each byte there is a + * pointer to the node with the byte that follows in the word (child). + * + * A NUL byte is used where the word may end. The bytes are sorted, so that + * binary searching can be used and the NUL bytes are at the start. The + * number of possible bytes is stored before the list of bytes. + * + * The tree uses two arrays: "byts" stores the characters, "idxs" stores + * either the next index or flags. The tree starts at index 0. For example, + * to lookup "vi" this sequence is followed: + * i = 0 + * len = byts[i] + * n = where "v" appears in byts[i + 1] to byts[i + len] + * i = idxs[n] + * len = byts[i] + * n = where "i" appears in byts[i + 1] to byts[i + len] + * i = idxs[n] + * len = byts[i] + * find that byts[i + 1] is 0, idxs[i + 1] has flags for "vi". + * + * There are two word trees: one with case-folded words and one with words in + * original case. The second one is only used for keep-case words and is + * usually small. + * + * There is one additional tree for when not all prefixes are applied when + * generating the .spl file. This tree stores all the possible prefixes, as + * if they were words. At each word (prefix) end the prefix nr is stored, the + * following word must support this prefix nr. And the condition nr is + * stored, used to lookup the condition that the word must match with. + * + * Thanks to Olaf Seibert for providing an example implementation of this tree + * and the compression mechanism. + * LZ trie ideas: + * http://www.irb.hr/hr/home/ristov/papers/RistovLZtrieRevision1.pdf + * More papers: http://www-igm.univ-mlv.fr/~laporte/publi_en.html + * + * Matching involves checking the caps type: Onecap ALLCAP KeepCap. + * + * Why doesn't Vim use aspell/ispell/myspell/etc.? + * See ":help develop-spell". + */ + +/* + * Use this to adjust the score after finding suggestions, based on the + * suggested word sounding like the bad word. This is much faster than doing + * it for every possible suggestion. + * Disadvantage: When "the" is typed as "hte" it sounds quite different ("@" + * vs "ht") and goes down in the list. + * Used when 'spellsuggest' is set to "best". + */ +#define RESCORE(word_score, sound_score) ((3 * word_score + sound_score) / 4) + +/* + * Do the opposite: based on a maximum end score and a known sound score, + * compute the maximum word score that can be used. + */ +#define MAXSCORE(word_score, sound_score) ((4 * word_score - sound_score) / 3) + +#define IN_SPELL_C +#include "vim.h" + +#if defined(FEAT_SPELL) || defined(PROTO) + +#ifndef UNIX /* it's in os_unix.h for Unix */ +# include <time.h> /* for time_t */ +#endif + +/* only used for su_badflags */ +#define WF_MIXCAP 0x20 /* mix of upper and lower case: macaRONI */ + +#define WF_CAPMASK (WF_ONECAP | WF_ALLCAP | WF_KEEPCAP | WF_FIXCAP) + +#define REGION_ALL 0xff /* word valid in all regions */ + +#define VIMSUGMAGIC "VIMsug" /* string at start of Vim .sug file */ +#define VIMSUGMAGICL 6 +#define VIMSUGVERSION 1 + +/* Result values. Lower number is accepted over higher one. */ +#define SP_BANNED -1 +#define SP_OK 0 +#define SP_RARE 1 +#define SP_LOCAL 2 +#define SP_BAD 3 + +typedef struct wordcount_S +{ + short_u wc_count; /* nr of times word was seen */ + char_u wc_word[1]; /* word, actually longer */ +} wordcount_T; + +#define WC_KEY_OFF offsetof(wordcount_T, wc_word) +#define HI2WC(hi) ((wordcount_T *)((hi)->hi_key - WC_KEY_OFF)) +#define MAXWORDCOUNT 0xffff + +/* + * Information used when looking for suggestions. + */ +typedef struct suginfo_S +{ + garray_T su_ga; /* suggestions, contains "suggest_T" */ + int su_maxcount; /* max. number of suggestions displayed */ + int su_maxscore; /* maximum score for adding to su_ga */ + int su_sfmaxscore; /* idem, for when doing soundfold words */ + garray_T su_sga; /* like su_ga, sound-folded scoring */ + char_u *su_badptr; /* start of bad word in line */ + int su_badlen; /* length of detected bad word in line */ + int su_badflags; /* caps flags for bad word */ + char_u su_badword[MAXWLEN]; /* bad word truncated at su_badlen */ + char_u su_fbadword[MAXWLEN]; /* su_badword case-folded */ + char_u su_sal_badword[MAXWLEN]; /* su_badword soundfolded */ + hashtab_T su_banned; /* table with banned words */ + slang_T *su_sallang; /* default language for sound folding */ +} suginfo_T; + +/* One word suggestion. Used in "si_ga". */ +typedef struct suggest_S +{ + char_u *st_word; /* suggested word, allocated string */ + int st_wordlen; /* STRLEN(st_word) */ + int st_orglen; /* length of replaced text */ + int st_score; /* lower is better */ + int st_altscore; /* used when st_score compares equal */ + int st_salscore; /* st_score is for soundalike */ + int st_had_bonus; /* bonus already included in score */ + slang_T *st_slang; /* language used for sound folding */ +} suggest_T; + +#define SUG(ga, i) (((suggest_T *)(ga).ga_data)[i]) + +/* TRUE if a word appears in the list of banned words. */ +#define WAS_BANNED(su, word) (!HASHITEM_EMPTY(hash_find(&su->su_banned, word))) + +/* Number of suggestions kept when cleaning up. We need to keep more than + * what is displayed, because when rescore_suggestions() is called the score + * may change and wrong suggestions may be removed later. */ +#define SUG_CLEAN_COUNT(su) ((su)->su_maxcount < 130 ? 150 : (su)->su_maxcount + 20) + +/* Threshold for sorting and cleaning up suggestions. Don't want to keep lots + * of suggestions that are not going to be displayed. */ +#define SUG_MAX_COUNT(su) (SUG_CLEAN_COUNT(su) + 50) + +/* score for various changes */ +#define SCORE_SPLIT 149 /* split bad word */ +#define SCORE_SPLIT_NO 249 /* split bad word with NOSPLITSUGS */ +#define SCORE_ICASE 52 /* slightly different case */ +#define SCORE_REGION 200 /* word is for different region */ +#define SCORE_RARE 180 /* rare word */ +#define SCORE_SWAP 75 /* swap two characters */ +#define SCORE_SWAP3 110 /* swap two characters in three */ +#define SCORE_REP 65 /* REP replacement */ +#define SCORE_SUBST 93 /* substitute a character */ +#define SCORE_SIMILAR 33 /* substitute a similar character */ +#define SCORE_SUBCOMP 33 /* substitute a composing character */ +#define SCORE_DEL 94 /* delete a character */ +#define SCORE_DELDUP 66 /* delete a duplicated character */ +#define SCORE_DELCOMP 28 /* delete a composing character */ +#define SCORE_INS 96 /* insert a character */ +#define SCORE_INSDUP 67 /* insert a duplicate character */ +#define SCORE_INSCOMP 30 /* insert a composing character */ +#define SCORE_NONWORD 103 /* change non-word to word char */ + +#define SCORE_FILE 30 /* suggestion from a file */ +#define SCORE_MAXINIT 350 /* Initial maximum score: higher == slower. + * 350 allows for about three changes. */ + +#define SCORE_COMMON1 30 /* subtracted for words seen before */ +#define SCORE_COMMON2 40 /* subtracted for words often seen */ +#define SCORE_COMMON3 50 /* subtracted for words very often seen */ +#define SCORE_THRES2 10 /* word count threshold for COMMON2 */ +#define SCORE_THRES3 100 /* word count threshold for COMMON3 */ + +/* When trying changed soundfold words it becomes slow when trying more than + * two changes. With less then two changes it's slightly faster but we miss a + * few good suggestions. In rare cases we need to try three of four changes. + */ +#define SCORE_SFMAX1 200 /* maximum score for first try */ +#define SCORE_SFMAX2 300 /* maximum score for second try */ +#define SCORE_SFMAX3 400 /* maximum score for third try */ + +#define SCORE_BIG SCORE_INS * 3 /* big difference */ +#define SCORE_MAXMAX 999999 /* accept any score */ +#define SCORE_LIMITMAX 350 /* for spell_edit_score_limit() */ + +/* for spell_edit_score_limit() we need to know the minimum value of + * SCORE_ICASE, SCORE_SWAP, SCORE_DEL, SCORE_SIMILAR and SCORE_INS */ +#define SCORE_EDIT_MIN SCORE_SIMILAR + +/* + * Structure to store info for word matching. + */ +typedef struct matchinf_S +{ + langp_T *mi_lp; /* info for language and region */ + + /* pointers to original text to be checked */ + char_u *mi_word; /* start of word being checked */ + char_u *mi_end; /* end of matching word so far */ + char_u *mi_fend; /* next char to be added to mi_fword */ + char_u *mi_cend; /* char after what was used for + mi_capflags */ + + /* case-folded text */ + char_u mi_fword[MAXWLEN + 1]; /* mi_word case-folded */ + int mi_fwordlen; /* nr of valid bytes in mi_fword */ + + /* for when checking word after a prefix */ + int mi_prefarridx; /* index in sl_pidxs with list of + affixID/condition */ + int mi_prefcnt; /* number of entries at mi_prefarridx */ + int mi_prefixlen; /* byte length of prefix */ + int mi_cprefixlen; /* byte length of prefix in original + case */ + + /* for when checking a compound word */ + int mi_compoff; /* start of following word offset */ + char_u mi_compflags[MAXWLEN]; /* flags for compound words used */ + int mi_complen; /* nr of compound words used */ + int mi_compextra; /* nr of COMPOUNDROOT words */ + + /* others */ + int mi_result; /* result so far: SP_BAD, SP_OK, etc. */ + int mi_capflags; /* WF_ONECAP WF_ALLCAP WF_KEEPCAP */ + win_T *mi_win; /* buffer being checked */ + + /* for NOBREAK */ + int mi_result2; /* "mi_resul" without following word */ + char_u *mi_end2; /* "mi_end" without following word */ +} matchinf_T; + + +static int spell_iswordp(char_u *p, win_T *wp); +static int spell_mb_isword_class(int cl, win_T *wp); + +/* + * For finding suggestions: At each node in the tree these states are tried: + */ +typedef enum +{ + STATE_START = 0, /* At start of node check for NUL bytes (goodword + * ends); if badword ends there is a match, otherwise + * try splitting word. */ + STATE_NOPREFIX, /* try without prefix */ + STATE_SPLITUNDO, /* Undo splitting. */ + STATE_ENDNUL, /* Past NUL bytes at start of the node. */ + STATE_PLAIN, /* Use each byte of the node. */ + STATE_DEL, /* Delete a byte from the bad word. */ + STATE_INS_PREP, /* Prepare for inserting bytes. */ + STATE_INS, /* Insert a byte in the bad word. */ + STATE_SWAP, /* Swap two bytes. */ + STATE_UNSWAP, /* Undo swap two characters. */ + STATE_SWAP3, /* Swap two characters over three. */ + STATE_UNSWAP3, /* Undo Swap two characters over three. */ + STATE_UNROT3L, /* Undo rotate three characters left */ + STATE_UNROT3R, /* Undo rotate three characters right */ + STATE_REP_INI, /* Prepare for using REP items. */ + STATE_REP, /* Use matching REP items from the .aff file. */ + STATE_REP_UNDO, /* Undo a REP item replacement. */ + STATE_FINAL /* End of this node. */ +} state_T; + +/* + * Struct to keep the state at each level in suggest_try_change(). + */ +typedef struct trystate_S +{ + state_T ts_state; /* state at this level, STATE_ */ + int ts_score; /* score */ + idx_T ts_arridx; /* index in tree array, start of node */ + short ts_curi; /* index in list of child nodes */ + char_u ts_fidx; /* index in fword[], case-folded bad word */ + char_u ts_fidxtry; /* ts_fidx at which bytes may be changed */ + char_u ts_twordlen; /* valid length of tword[] */ + char_u ts_prefixdepth; /* stack depth for end of prefix or + * PFD_PREFIXTREE or PFD_NOPREFIX */ + char_u ts_flags; /* TSF_ flags */ + char_u ts_tcharlen; /* number of bytes in tword character */ + char_u ts_tcharidx; /* current byte index in tword character */ + char_u ts_isdiff; /* DIFF_ values */ + char_u ts_fcharstart; /* index in fword where badword char started */ + char_u ts_prewordlen; /* length of word in "preword[]" */ + char_u ts_splitoff; /* index in "tword" after last split */ + char_u ts_splitfidx; /* "ts_fidx" at word split */ + char_u ts_complen; /* nr of compound words used */ + char_u ts_compsplit; /* index for "compflags" where word was spit */ + char_u ts_save_badflags; /* su_badflags saved here */ + char_u ts_delidx; /* index in fword for char that was deleted, + valid when "ts_flags" has TSF_DIDDEL */ +} trystate_T; + +/* values for ts_isdiff */ +#define DIFF_NONE 0 /* no different byte (yet) */ +#define DIFF_YES 1 /* different byte found */ +#define DIFF_INSERT 2 /* inserting character */ + +/* values for ts_flags */ +#define TSF_PREFIXOK 1 /* already checked that prefix is OK */ +#define TSF_DIDSPLIT 2 /* tried split at this point */ +#define TSF_DIDDEL 4 /* did a delete, "ts_delidx" has index */ + +/* special values ts_prefixdepth */ +#define PFD_NOPREFIX 0xff /* not using prefixes */ +#define PFD_PREFIXTREE 0xfe /* walking through the prefix tree */ +#define PFD_NOTSPECIAL 0xfd /* highest value that's not special */ + +/* mode values for find_word */ +#define FIND_FOLDWORD 0 /* find word case-folded */ +#define FIND_KEEPWORD 1 /* find keep-case word */ +#define FIND_PREFIX 2 /* find word after prefix */ +#define FIND_COMPOUND 3 /* find case-folded compound word */ +#define FIND_KEEPCOMPOUND 4 /* find keep-case compound word */ + +static void find_word(matchinf_T *mip, int mode); +static int match_checkcompoundpattern(char_u *ptr, int wlen, garray_T *gap); +static int can_compound(slang_T *slang, char_u *word, char_u *flags); +static int match_compoundrule(slang_T *slang, char_u *compflags); +static int valid_word_prefix(int totprefcnt, int arridx, int flags, char_u *word, slang_T *slang, int cond_req); +static void find_prefix(matchinf_T *mip, int mode); +static int fold_more(matchinf_T *mip); +static int spell_valid_case(int wordflags, int treeflags); +static void spell_load_cb(char_u *fname, void *cookie); +static int count_syllables(slang_T *slang, char_u *word); +static void clear_midword(win_T *buf); +static void use_midword(slang_T *lp, win_T *buf); +static int find_region(char_u *rp, char_u *region); +static int check_need_cap(linenr_T lnum, colnr_T col); +static void spell_find_suggest(char_u *badptr, int badlen, suginfo_T *su, int maxcount, int banbadword, int need_cap, int interactive); +#ifdef FEAT_EVAL +static void spell_suggest_expr(suginfo_T *su, char_u *expr); +#endif +static void spell_suggest_file(suginfo_T *su, char_u *fname); +static void spell_suggest_intern(suginfo_T *su, int interactive); +static void spell_find_cleanup(suginfo_T *su); +static void suggest_try_special(suginfo_T *su); +static void suggest_try_change(suginfo_T *su); +static void suggest_trie_walk(suginfo_T *su, langp_T *lp, char_u *fword, int soundfold); +static void go_deeper(trystate_T *stack, int depth, int score_add); +static int nofold_len(char_u *fword, int flen, char_u *word); +static void find_keepcap_word(slang_T *slang, char_u *fword, char_u *kword); +static void score_comp_sal(suginfo_T *su); +static void score_combine(suginfo_T *su); +static int stp_sal_score(suggest_T *stp, suginfo_T *su, slang_T *slang, char_u *badsound); +static void suggest_try_soundalike_prep(void); +static void suggest_try_soundalike(suginfo_T *su); +static void suggest_try_soundalike_finish(void); +static void add_sound_suggest(suginfo_T *su, char_u *goodword, int score, langp_T *lp); +static int soundfold_find(slang_T *slang, char_u *word); +static void make_case_word(char_u *fword, char_u *cword, int flags); +static int similar_chars(slang_T *slang, int c1, int c2); +static void add_suggestion(suginfo_T *su, garray_T *gap, char_u *goodword, int badlen, int score, int altscore, int had_bonus, slang_T *slang, int maxsf); +static void check_suggestions(suginfo_T *su, garray_T *gap); +static void add_banned(suginfo_T *su, char_u *word); +static void rescore_suggestions(suginfo_T *su); +static void rescore_one(suginfo_T *su, suggest_T *stp); +static int cleanup_suggestions(garray_T *gap, int maxscore, int keep); +static void spell_soundfold_sofo(slang_T *slang, char_u *inword, char_u *res); +static void spell_soundfold_sal(slang_T *slang, char_u *inword, char_u *res); +static void spell_soundfold_wsal(slang_T *slang, char_u *inword, char_u *res); +static int soundalike_score(char_u *goodsound, char_u *badsound); +static int spell_edit_score(slang_T *slang, char_u *badword, char_u *goodword); +static int spell_edit_score_limit(slang_T *slang, char_u *badword, char_u *goodword, int limit); +static int spell_edit_score_limit_w(slang_T *slang, char_u *badword, char_u *goodword, int limit); +static void dump_word(slang_T *slang, char_u *word, char_u *pat, int *dir, int round, int flags, linenr_T lnum); +static linenr_T dump_prefixes(slang_T *slang, char_u *word, char_u *pat, int *dir, int round, int flags, linenr_T startlnum); + + +/* Remember what "z?" replaced. */ +static char_u *repl_from = NULL; +static char_u *repl_to = NULL; + +/* + * Main spell-checking function. + * "ptr" points to a character that could be the start of a word. + * "*attrp" is set to the highlight index for a badly spelled word. For a + * non-word or when it's OK it remains unchanged. + * This must only be called when 'spelllang' is not empty. + * + * "capcol" is used to check for a Capitalised word after the end of a + * sentence. If it's zero then perform the check. Return the column where to + * check next, or -1 when no sentence end was found. If it's NULL then don't + * worry. + * + * Returns the length of the word in bytes, also when it's OK, so that the + * caller can skip over the word. + */ + int +spell_check( + win_T *wp, /* current window */ + char_u *ptr, + hlf_T *attrp, + int *capcol, /* column to check for Capital */ + int docount) /* count good words */ +{ + matchinf_T mi; /* Most things are put in "mi" so that it can + be passed to functions quickly. */ + int nrlen = 0; /* found a number first */ + int c; + int wrongcaplen = 0; + int lpi; + int count_word = docount; + + /* A word never starts at a space or a control character. Return quickly + * then, skipping over the character. */ + if (*ptr <= ' ') + return 1; + + /* Return here when loading language files failed. */ + if (wp->w_s->b_langp.ga_len == 0) + return 1; + + vim_memset(&mi, 0, sizeof(matchinf_T)); + + /* A number is always OK. Also skip hexadecimal numbers 0xFF99 and + * 0X99FF. But always do check spelling to find "3GPP" and "11 + * julifeest". */ + if (*ptr >= '0' && *ptr <= '9') + { + if (*ptr == '0' && (ptr[1] == 'b' || ptr[1] == 'B')) + mi.mi_end = skipbin(ptr + 2); + else if (*ptr == '0' && (ptr[1] == 'x' || ptr[1] == 'X')) + mi.mi_end = skiphex(ptr + 2); + else + mi.mi_end = skipdigits(ptr); + nrlen = (int)(mi.mi_end - ptr); + } + + /* Find the normal end of the word (until the next non-word character). */ + mi.mi_word = ptr; + mi.mi_fend = ptr; + if (spell_iswordp(mi.mi_fend, wp)) + { + do + { + MB_PTR_ADV(mi.mi_fend); + } while (*mi.mi_fend != NUL && spell_iswordp(mi.mi_fend, wp)); + + if (capcol != NULL && *capcol == 0 && wp->w_s->b_cap_prog != NULL) + { + /* Check word starting with capital letter. */ + c = PTR2CHAR(ptr); + if (!SPELL_ISUPPER(c)) + wrongcaplen = (int)(mi.mi_fend - ptr); + } + } + if (capcol != NULL) + *capcol = -1; + + /* We always use the characters up to the next non-word character, + * also for bad words. */ + mi.mi_end = mi.mi_fend; + + /* Check caps type later. */ + mi.mi_capflags = 0; + mi.mi_cend = NULL; + mi.mi_win = wp; + + /* case-fold the word with one non-word character, so that we can check + * for the word end. */ + if (*mi.mi_fend != NUL) + MB_PTR_ADV(mi.mi_fend); + + (void)spell_casefold(ptr, (int)(mi.mi_fend - ptr), mi.mi_fword, + MAXWLEN + 1); + mi.mi_fwordlen = (int)STRLEN(mi.mi_fword); + + /* The word is bad unless we recognize it. */ + mi.mi_result = SP_BAD; + mi.mi_result2 = SP_BAD; + + /* + * Loop over the languages specified in 'spelllang'. + * We check them all, because a word may be matched longer in another + * language. + */ + for (lpi = 0; lpi < wp->w_s->b_langp.ga_len; ++lpi) + { + mi.mi_lp = LANGP_ENTRY(wp->w_s->b_langp, lpi); + + /* If reloading fails the language is still in the list but everything + * has been cleared. */ + if (mi.mi_lp->lp_slang->sl_fidxs == NULL) + continue; + + /* Check for a matching word in case-folded words. */ + find_word(&mi, FIND_FOLDWORD); + + /* Check for a matching word in keep-case words. */ + find_word(&mi, FIND_KEEPWORD); + + /* Check for matching prefixes. */ + find_prefix(&mi, FIND_FOLDWORD); + + /* For a NOBREAK language, may want to use a word without a following + * word as a backup. */ + if (mi.mi_lp->lp_slang->sl_nobreak && mi.mi_result == SP_BAD + && mi.mi_result2 != SP_BAD) + { + mi.mi_result = mi.mi_result2; + mi.mi_end = mi.mi_end2; + } + + /* Count the word in the first language where it's found to be OK. */ + if (count_word && mi.mi_result == SP_OK) + { + count_common_word(mi.mi_lp->lp_slang, ptr, + (int)(mi.mi_end - ptr), 1); + count_word = FALSE; + } + } + + if (mi.mi_result != SP_OK) + { + /* If we found a number skip over it. Allows for "42nd". Do flag + * rare and local words, e.g., "3GPP". */ + if (nrlen > 0) + { + if (mi.mi_result == SP_BAD || mi.mi_result == SP_BANNED) + return nrlen; + } + + /* When we are at a non-word character there is no error, just + * skip over the character (try looking for a word after it). */ + else if (!spell_iswordp_nmw(ptr, wp)) + { + if (capcol != NULL && wp->w_s->b_cap_prog != NULL) + { + regmatch_T regmatch; + int r; + + /* Check for end of sentence. */ + regmatch.regprog = wp->w_s->b_cap_prog; + regmatch.rm_ic = FALSE; + r = vim_regexec(®match, ptr, 0); + wp->w_s->b_cap_prog = regmatch.regprog; + if (r) + *capcol = (int)(regmatch.endp[0] - ptr); + } + + if (has_mbyte) + return (*mb_ptr2len)(ptr); + return 1; + } + else if (mi.mi_end == ptr) + /* Always include at least one character. Required for when there + * is a mixup in "midword". */ + MB_PTR_ADV(mi.mi_end); + else if (mi.mi_result == SP_BAD + && LANGP_ENTRY(wp->w_s->b_langp, 0)->lp_slang->sl_nobreak) + { + char_u *p, *fp; + int save_result = mi.mi_result; + + /* First language in 'spelllang' is NOBREAK. Find first position + * at which any word would be valid. */ + mi.mi_lp = LANGP_ENTRY(wp->w_s->b_langp, 0); + if (mi.mi_lp->lp_slang->sl_fidxs != NULL) + { + p = mi.mi_word; + fp = mi.mi_fword; + for (;;) + { + MB_PTR_ADV(p); + MB_PTR_ADV(fp); + if (p >= mi.mi_end) + break; + mi.mi_compoff = (int)(fp - mi.mi_fword); + find_word(&mi, FIND_COMPOUND); + if (mi.mi_result != SP_BAD) + { + mi.mi_end = p; + break; + } + } + mi.mi_result = save_result; + } + } + + if (mi.mi_result == SP_BAD || mi.mi_result == SP_BANNED) + *attrp = HLF_SPB; + else if (mi.mi_result == SP_RARE) + *attrp = HLF_SPR; + else + *attrp = HLF_SPL; + } + + if (wrongcaplen > 0 && (mi.mi_result == SP_OK || mi.mi_result == SP_RARE)) + { + /* Report SpellCap only when the word isn't badly spelled. */ + *attrp = HLF_SPC; + return wrongcaplen; + } + + return (int)(mi.mi_end - ptr); +} + +/* + * Check if the word at "mip->mi_word" is in the tree. + * When "mode" is FIND_FOLDWORD check in fold-case word tree. + * When "mode" is FIND_KEEPWORD check in keep-case word tree. + * When "mode" is FIND_PREFIX check for word after prefix in fold-case word + * tree. + * + * For a match mip->mi_result is updated. + */ + static void +find_word(matchinf_T *mip, int mode) +{ + idx_T arridx = 0; + int endlen[MAXWLEN]; /* length at possible word endings */ + idx_T endidx[MAXWLEN]; /* possible word endings */ + int endidxcnt = 0; + int len; + int wlen = 0; + int flen; + int c; + char_u *ptr; + idx_T lo, hi, m; + char_u *s; + char_u *p; + int res = SP_BAD; + slang_T *slang = mip->mi_lp->lp_slang; + unsigned flags; + char_u *byts; + idx_T *idxs; + int word_ends; + int prefix_found; + int nobreak_result; + + if (mode == FIND_KEEPWORD || mode == FIND_KEEPCOMPOUND) + { + /* Check for word with matching case in keep-case tree. */ + ptr = mip->mi_word; + flen = 9999; /* no case folding, always enough bytes */ + byts = slang->sl_kbyts; + idxs = slang->sl_kidxs; + + if (mode == FIND_KEEPCOMPOUND) + /* Skip over the previously found word(s). */ + wlen += mip->mi_compoff; + } + else + { + /* Check for case-folded in case-folded tree. */ + ptr = mip->mi_fword; + flen = mip->mi_fwordlen; /* available case-folded bytes */ + byts = slang->sl_fbyts; + idxs = slang->sl_fidxs; + + if (mode == FIND_PREFIX) + { + /* Skip over the prefix. */ + wlen = mip->mi_prefixlen; + flen -= mip->mi_prefixlen; + } + else if (mode == FIND_COMPOUND) + { + /* Skip over the previously found word(s). */ + wlen = mip->mi_compoff; + flen -= mip->mi_compoff; + } + + } + + if (byts == NULL) + return; /* array is empty */ + + /* + * Repeat advancing in the tree until: + * - there is a byte that doesn't match, + * - we reach the end of the tree, + * - or we reach the end of the line. + */ + for (;;) + { + if (flen <= 0 && *mip->mi_fend != NUL) + flen = fold_more(mip); + + len = byts[arridx++]; + + /* If the first possible byte is a zero the word could end here. + * Remember this index, we first check for the longest word. */ + if (byts[arridx] == 0) + { + if (endidxcnt == MAXWLEN) + { + /* Must be a corrupted spell file. */ + emsg(_(e_format)); + return; + } + endlen[endidxcnt] = wlen; + endidx[endidxcnt++] = arridx++; + --len; + + /* Skip over the zeros, there can be several flag/region + * combinations. */ + while (len > 0 && byts[arridx] == 0) + { + ++arridx; + --len; + } + if (len == 0) + break; /* no children, word must end here */ + } + + /* Stop looking at end of the line. */ + if (ptr[wlen] == NUL) + break; + + /* Perform a binary search in the list of accepted bytes. */ + c = ptr[wlen]; + if (c == TAB) /* <Tab> is handled like <Space> */ + c = ' '; + lo = arridx; + hi = arridx + len - 1; + while (lo < hi) + { + m = (lo + hi) / 2; + if (byts[m] > c) + hi = m - 1; + else if (byts[m] < c) + lo = m + 1; + else + { + lo = hi = m; + break; + } + } + + /* Stop if there is no matching byte. */ + if (hi < lo || byts[lo] != c) + break; + + /* Continue at the child (if there is one). */ + arridx = idxs[lo]; + ++wlen; + --flen; + + /* One space in the good word may stand for several spaces in the + * checked word. */ + if (c == ' ') + { + for (;;) + { + if (flen <= 0 && *mip->mi_fend != NUL) + flen = fold_more(mip); + if (ptr[wlen] != ' ' && ptr[wlen] != TAB) + break; + ++wlen; + --flen; + } + } + } + + /* + * Verify that one of the possible endings is valid. Try the longest + * first. + */ + while (endidxcnt > 0) + { + --endidxcnt; + arridx = endidx[endidxcnt]; + wlen = endlen[endidxcnt]; + + if ((*mb_head_off)(ptr, ptr + wlen) > 0) + continue; /* not at first byte of character */ + if (spell_iswordp(ptr + wlen, mip->mi_win)) + { + if (slang->sl_compprog == NULL && !slang->sl_nobreak) + continue; /* next char is a word character */ + word_ends = FALSE; + } + else + word_ends = TRUE; + /* The prefix flag is before compound flags. Once a valid prefix flag + * has been found we try compound flags. */ + prefix_found = FALSE; + + if (mode != FIND_KEEPWORD && has_mbyte) + { + /* Compute byte length in original word, length may change + * when folding case. This can be slow, take a shortcut when the + * case-folded word is equal to the keep-case word. */ + p = mip->mi_word; + if (STRNCMP(ptr, p, wlen) != 0) + { + for (s = ptr; s < ptr + wlen; MB_PTR_ADV(s)) + MB_PTR_ADV(p); + wlen = (int)(p - mip->mi_word); + } + } + + /* Check flags and region. For FIND_PREFIX check the condition and + * prefix ID. + * Repeat this if there are more flags/region alternatives until there + * is a match. */ + res = SP_BAD; + for (len = byts[arridx - 1]; len > 0 && byts[arridx] == 0; + --len, ++arridx) + { + flags = idxs[arridx]; + + /* For the fold-case tree check that the case of the checked word + * matches with what the word in the tree requires. + * For keep-case tree the case is always right. For prefixes we + * don't bother to check. */ + if (mode == FIND_FOLDWORD) + { + if (mip->mi_cend != mip->mi_word + wlen) + { + /* mi_capflags was set for a different word length, need + * to do it again. */ + mip->mi_cend = mip->mi_word + wlen; + mip->mi_capflags = captype(mip->mi_word, mip->mi_cend); + } + + if (mip->mi_capflags == WF_KEEPCAP + || !spell_valid_case(mip->mi_capflags, flags)) + continue; + } + + /* When mode is FIND_PREFIX the word must support the prefix: + * check the prefix ID and the condition. Do that for the list at + * mip->mi_prefarridx that find_prefix() filled. */ + else if (mode == FIND_PREFIX && !prefix_found) + { + c = valid_word_prefix(mip->mi_prefcnt, mip->mi_prefarridx, + flags, + mip->mi_word + mip->mi_cprefixlen, slang, + FALSE); + if (c == 0) + continue; + + /* Use the WF_RARE flag for a rare prefix. */ + if (c & WF_RAREPFX) + flags |= WF_RARE; + prefix_found = TRUE; + } + + if (slang->sl_nobreak) + { + if ((mode == FIND_COMPOUND || mode == FIND_KEEPCOMPOUND) + && (flags & WF_BANNED) == 0) + { + /* NOBREAK: found a valid following word. That's all we + * need to know, so return. */ + mip->mi_result = SP_OK; + break; + } + } + + else if ((mode == FIND_COMPOUND || mode == FIND_KEEPCOMPOUND + || !word_ends)) + { + /* If there is no compound flag or the word is shorter than + * COMPOUNDMIN reject it quickly. + * Makes you wonder why someone puts a compound flag on a word + * that's too short... Myspell compatibility requires this + * anyway. */ + if (((unsigned)flags >> 24) == 0 + || wlen - mip->mi_compoff < slang->sl_compminlen) + continue; + /* For multi-byte chars check character length against + * COMPOUNDMIN. */ + if (has_mbyte + && slang->sl_compminlen > 0 + && mb_charlen_len(mip->mi_word + mip->mi_compoff, + wlen - mip->mi_compoff) < slang->sl_compminlen) + continue; + + /* Limit the number of compound words to COMPOUNDWORDMAX if no + * maximum for syllables is specified. */ + if (!word_ends && mip->mi_complen + mip->mi_compextra + 2 + > slang->sl_compmax + && slang->sl_compsylmax == MAXWLEN) + continue; + + /* Don't allow compounding on a side where an affix was added, + * unless COMPOUNDPERMITFLAG was used. */ + if (mip->mi_complen > 0 && (flags & WF_NOCOMPBEF)) + continue; + if (!word_ends && (flags & WF_NOCOMPAFT)) + continue; + + /* Quickly check if compounding is possible with this flag. */ + if (!byte_in_str(mip->mi_complen == 0 + ? slang->sl_compstartflags + : slang->sl_compallflags, + ((unsigned)flags >> 24))) + continue; + + /* If there is a match with a CHECKCOMPOUNDPATTERN rule + * discard the compound word. */ + if (match_checkcompoundpattern(ptr, wlen, &slang->sl_comppat)) + continue; + + if (mode == FIND_COMPOUND) + { + int capflags; + + /* Need to check the caps type of the appended compound + * word. */ + if (has_mbyte && STRNCMP(ptr, mip->mi_word, + mip->mi_compoff) != 0) + { + /* case folding may have changed the length */ + p = mip->mi_word; + for (s = ptr; s < ptr + mip->mi_compoff; MB_PTR_ADV(s)) + MB_PTR_ADV(p); + } + else + p = mip->mi_word + mip->mi_compoff; + capflags = captype(p, mip->mi_word + wlen); + if (capflags == WF_KEEPCAP || (capflags == WF_ALLCAP + && (flags & WF_FIXCAP) != 0)) + continue; + + if (capflags != WF_ALLCAP) + { + /* When the character before the word is a word + * character we do not accept a Onecap word. We do + * accept a no-caps word, even when the dictionary + * word specifies ONECAP. */ + MB_PTR_BACK(mip->mi_word, p); + if (spell_iswordp_nmw(p, mip->mi_win) + ? capflags == WF_ONECAP + : (flags & WF_ONECAP) != 0 + && capflags != WF_ONECAP) + continue; + } + } + + /* If the word ends the sequence of compound flags of the + * words must match with one of the COMPOUNDRULE items and + * the number of syllables must not be too large. */ + mip->mi_compflags[mip->mi_complen] = ((unsigned)flags >> 24); + mip->mi_compflags[mip->mi_complen + 1] = NUL; + if (word_ends) + { + char_u fword[MAXWLEN]; + + if (slang->sl_compsylmax < MAXWLEN) + { + /* "fword" is only needed for checking syllables. */ + if (ptr == mip->mi_word) + (void)spell_casefold(ptr, wlen, fword, MAXWLEN); + else + vim_strncpy(fword, ptr, endlen[endidxcnt]); + } + if (!can_compound(slang, fword, mip->mi_compflags)) + continue; + } + else if (slang->sl_comprules != NULL + && !match_compoundrule(slang, mip->mi_compflags)) + /* The compound flags collected so far do not match any + * COMPOUNDRULE, discard the compounded word. */ + continue; + } + + /* Check NEEDCOMPOUND: can't use word without compounding. */ + else if (flags & WF_NEEDCOMP) + continue; + + nobreak_result = SP_OK; + + if (!word_ends) + { + int save_result = mip->mi_result; + char_u *save_end = mip->mi_end; + langp_T *save_lp = mip->mi_lp; + int lpi; + + /* Check that a valid word follows. If there is one and we + * are compounding, it will set "mi_result", thus we are + * always finished here. For NOBREAK we only check that a + * valid word follows. + * Recursive! */ + if (slang->sl_nobreak) + mip->mi_result = SP_BAD; + + /* Find following word in case-folded tree. */ + mip->mi_compoff = endlen[endidxcnt]; + if (has_mbyte && mode == FIND_KEEPWORD) + { + /* Compute byte length in case-folded word from "wlen": + * byte length in keep-case word. Length may change when + * folding case. This can be slow, take a shortcut when + * the case-folded word is equal to the keep-case word. */ + p = mip->mi_fword; + if (STRNCMP(ptr, p, wlen) != 0) + { + for (s = ptr; s < ptr + wlen; MB_PTR_ADV(s)) + MB_PTR_ADV(p); + mip->mi_compoff = (int)(p - mip->mi_fword); + } + } +#if 0 /* Disabled, see below */ + c = mip->mi_compoff; +#endif + ++mip->mi_complen; + if (flags & WF_COMPROOT) + ++mip->mi_compextra; + + /* For NOBREAK we need to try all NOBREAK languages, at least + * to find the ".add" file(s). */ + for (lpi = 0; lpi < mip->mi_win->w_s->b_langp.ga_len; ++lpi) + { + if (slang->sl_nobreak) + { + mip->mi_lp = LANGP_ENTRY(mip->mi_win->w_s->b_langp, lpi); + if (mip->mi_lp->lp_slang->sl_fidxs == NULL + || !mip->mi_lp->lp_slang->sl_nobreak) + continue; + } + + find_word(mip, FIND_COMPOUND); + + /* When NOBREAK any word that matches is OK. Otherwise we + * need to find the longest match, thus try with keep-case + * and prefix too. */ + if (!slang->sl_nobreak || mip->mi_result == SP_BAD) + { + /* Find following word in keep-case tree. */ + mip->mi_compoff = wlen; + find_word(mip, FIND_KEEPCOMPOUND); + +#if 0 /* Disabled, a prefix must not appear halfway a compound word, + unless the COMPOUNDPERMITFLAG is used and then it can't be a + postponed prefix. */ + if (!slang->sl_nobreak || mip->mi_result == SP_BAD) + { + /* Check for following word with prefix. */ + mip->mi_compoff = c; + find_prefix(mip, FIND_COMPOUND); + } +#endif + } + + if (!slang->sl_nobreak) + break; + } + --mip->mi_complen; + if (flags & WF_COMPROOT) + --mip->mi_compextra; + mip->mi_lp = save_lp; + + if (slang->sl_nobreak) + { + nobreak_result = mip->mi_result; + mip->mi_result = save_result; + mip->mi_end = save_end; + } + else + { + if (mip->mi_result == SP_OK) + break; + continue; + } + } + + if (flags & WF_BANNED) + res = SP_BANNED; + else if (flags & WF_REGION) + { + /* Check region. */ + if ((mip->mi_lp->lp_region & (flags >> 16)) != 0) + res = SP_OK; + else + res = SP_LOCAL; + } + else if (flags & WF_RARE) + res = SP_RARE; + else + res = SP_OK; + + /* Always use the longest match and the best result. For NOBREAK + * we separately keep the longest match without a following good + * word as a fall-back. */ + if (nobreak_result == SP_BAD) + { + if (mip->mi_result2 > res) + { + mip->mi_result2 = res; + mip->mi_end2 = mip->mi_word + wlen; + } + else if (mip->mi_result2 == res + && mip->mi_end2 < mip->mi_word + wlen) + mip->mi_end2 = mip->mi_word + wlen; + } + else if (mip->mi_result > res) + { + mip->mi_result = res; + mip->mi_end = mip->mi_word + wlen; + } + else if (mip->mi_result == res && mip->mi_end < mip->mi_word + wlen) + mip->mi_end = mip->mi_word + wlen; + + if (mip->mi_result == SP_OK) + break; + } + + if (mip->mi_result == SP_OK) + break; + } +} + +/* + * Return TRUE if there is a match between the word ptr[wlen] and + * CHECKCOMPOUNDPATTERN rules, assuming that we will concatenate with another + * word. + * A match means that the first part of CHECKCOMPOUNDPATTERN matches at the + * end of ptr[wlen] and the second part matches after it. + */ + static int +match_checkcompoundpattern( + char_u *ptr, + int wlen, + garray_T *gap) /* &sl_comppat */ +{ + int i; + char_u *p; + int len; + + for (i = 0; i + 1 < gap->ga_len; i += 2) + { + p = ((char_u **)gap->ga_data)[i + 1]; + if (STRNCMP(ptr + wlen, p, STRLEN(p)) == 0) + { + /* Second part matches at start of following compound word, now + * check if first part matches at end of previous word. */ + p = ((char_u **)gap->ga_data)[i]; + len = (int)STRLEN(p); + if (len <= wlen && STRNCMP(ptr + wlen - len, p, len) == 0) + return TRUE; + } + } + return FALSE; +} + +/* + * Return TRUE if "flags" is a valid sequence of compound flags and "word" + * does not have too many syllables. + */ + static int +can_compound(slang_T *slang, char_u *word, char_u *flags) +{ + char_u uflags[MAXWLEN * 2]; + int i; + char_u *p; + + if (slang->sl_compprog == NULL) + return FALSE; + if (enc_utf8) + { + /* Need to convert the single byte flags to utf8 characters. */ + p = uflags; + for (i = 0; flags[i] != NUL; ++i) + p += utf_char2bytes(flags[i], p); + *p = NUL; + p = uflags; + } + else + p = flags; + if (!vim_regexec_prog(&slang->sl_compprog, FALSE, p, 0)) + return FALSE; + + /* Count the number of syllables. This may be slow, do it last. If there + * are too many syllables AND the number of compound words is above + * COMPOUNDWORDMAX then compounding is not allowed. */ + if (slang->sl_compsylmax < MAXWLEN + && count_syllables(slang, word) > slang->sl_compsylmax) + return (int)STRLEN(flags) < slang->sl_compmax; + return TRUE; +} + +/* + * Return TRUE when the sequence of flags in "compflags" plus "flag" can + * possibly form a valid compounded word. This also checks the COMPOUNDRULE + * lines if they don't contain wildcards. + */ + static int +can_be_compound( + trystate_T *sp, + slang_T *slang, + char_u *compflags, + int flag) +{ + /* If the flag doesn't appear in sl_compstartflags or sl_compallflags + * then it can't possibly compound. */ + if (!byte_in_str(sp->ts_complen == sp->ts_compsplit + ? slang->sl_compstartflags : slang->sl_compallflags, flag)) + return FALSE; + + /* If there are no wildcards, we can check if the flags collected so far + * possibly can form a match with COMPOUNDRULE patterns. This only + * makes sense when we have two or more words. */ + if (slang->sl_comprules != NULL && sp->ts_complen > sp->ts_compsplit) + { + int v; + + compflags[sp->ts_complen] = flag; + compflags[sp->ts_complen + 1] = NUL; + v = match_compoundrule(slang, compflags + sp->ts_compsplit); + compflags[sp->ts_complen] = NUL; + return v; + } + + return TRUE; +} + + +/* + * Return TRUE if the compound flags in compflags[] match the start of any + * compound rule. This is used to stop trying a compound if the flags + * collected so far can't possibly match any compound rule. + * Caller must check that slang->sl_comprules is not NULL. + */ + static int +match_compoundrule(slang_T *slang, char_u *compflags) +{ + char_u *p; + int i; + int c; + + /* loop over all the COMPOUNDRULE entries */ + for (p = slang->sl_comprules; *p != NUL; ++p) + { + /* loop over the flags in the compound word we have made, match + * them against the current rule entry */ + for (i = 0; ; ++i) + { + c = compflags[i]; + if (c == NUL) + /* found a rule that matches for the flags we have so far */ + return TRUE; + if (*p == '/' || *p == NUL) + break; /* end of rule, it's too short */ + if (*p == '[') + { + int match = FALSE; + + /* compare against all the flags in [] */ + ++p; + while (*p != ']' && *p != NUL) + if (*p++ == c) + match = TRUE; + if (!match) + break; /* none matches */ + } + else if (*p != c) + break; /* flag of word doesn't match flag in pattern */ + ++p; + } + + /* Skip to the next "/", where the next pattern starts. */ + p = vim_strchr(p, '/'); + if (p == NULL) + break; + } + + /* Checked all the rules and none of them match the flags, so there + * can't possibly be a compound starting with these flags. */ + return FALSE; +} + +/* + * Return non-zero if the prefix indicated by "arridx" matches with the prefix + * ID in "flags" for the word "word". + * The WF_RAREPFX flag is included in the return value for a rare prefix. + */ + static int +valid_word_prefix( + int totprefcnt, /* nr of prefix IDs */ + int arridx, /* idx in sl_pidxs[] */ + int flags, + char_u *word, + slang_T *slang, + int cond_req) /* only use prefixes with a condition */ +{ + int prefcnt; + int pidx; + regprog_T **rp; + int prefid; + + prefid = (unsigned)flags >> 24; + for (prefcnt = totprefcnt - 1; prefcnt >= 0; --prefcnt) + { + pidx = slang->sl_pidxs[arridx + prefcnt]; + + /* Check the prefix ID. */ + if (prefid != (pidx & 0xff)) + continue; + + /* Check if the prefix doesn't combine and the word already has a + * suffix. */ + if ((flags & WF_HAS_AFF) && (pidx & WF_PFX_NC)) + continue; + + /* Check the condition, if there is one. The condition index is + * stored in the two bytes above the prefix ID byte. */ + rp = &slang->sl_prefprog[((unsigned)pidx >> 8) & 0xffff]; + if (*rp != NULL) + { + if (!vim_regexec_prog(rp, FALSE, word, 0)) + continue; + } + else if (cond_req) + continue; + + /* It's a match! Return the WF_ flags. */ + return pidx; + } + return 0; +} + +/* + * Check if the word at "mip->mi_word" has a matching prefix. + * If it does, then check the following word. + * + * If "mode" is "FIND_COMPOUND" then do the same after another word, find a + * prefix in a compound word. + * + * For a match mip->mi_result is updated. + */ + static void +find_prefix(matchinf_T *mip, int mode) +{ + idx_T arridx = 0; + int len; + int wlen = 0; + int flen; + int c; + char_u *ptr; + idx_T lo, hi, m; + slang_T *slang = mip->mi_lp->lp_slang; + char_u *byts; + idx_T *idxs; + + byts = slang->sl_pbyts; + if (byts == NULL) + return; /* array is empty */ + + /* We use the case-folded word here, since prefixes are always + * case-folded. */ + ptr = mip->mi_fword; + flen = mip->mi_fwordlen; /* available case-folded bytes */ + if (mode == FIND_COMPOUND) + { + /* Skip over the previously found word(s). */ + ptr += mip->mi_compoff; + flen -= mip->mi_compoff; + } + idxs = slang->sl_pidxs; + + /* + * Repeat advancing in the tree until: + * - there is a byte that doesn't match, + * - we reach the end of the tree, + * - or we reach the end of the line. + */ + for (;;) + { + if (flen == 0 && *mip->mi_fend != NUL) + flen = fold_more(mip); + + len = byts[arridx++]; + + /* If the first possible byte is a zero the prefix could end here. + * Check if the following word matches and supports the prefix. */ + if (byts[arridx] == 0) + { + /* There can be several prefixes with different conditions. We + * try them all, since we don't know which one will give the + * longest match. The word is the same each time, pass the list + * of possible prefixes to find_word(). */ + mip->mi_prefarridx = arridx; + mip->mi_prefcnt = len; + while (len > 0 && byts[arridx] == 0) + { + ++arridx; + --len; + } + mip->mi_prefcnt -= len; + + /* Find the word that comes after the prefix. */ + mip->mi_prefixlen = wlen; + if (mode == FIND_COMPOUND) + /* Skip over the previously found word(s). */ + mip->mi_prefixlen += mip->mi_compoff; + + if (has_mbyte) + { + /* Case-folded length may differ from original length. */ + mip->mi_cprefixlen = nofold_len(mip->mi_fword, + mip->mi_prefixlen, mip->mi_word); + } + else + mip->mi_cprefixlen = mip->mi_prefixlen; + find_word(mip, FIND_PREFIX); + + + if (len == 0) + break; /* no children, word must end here */ + } + + /* Stop looking at end of the line. */ + if (ptr[wlen] == NUL) + break; + + /* Perform a binary search in the list of accepted bytes. */ + c = ptr[wlen]; + lo = arridx; + hi = arridx + len - 1; + while (lo < hi) + { + m = (lo + hi) / 2; + if (byts[m] > c) + hi = m - 1; + else if (byts[m] < c) + lo = m + 1; + else + { + lo = hi = m; + break; + } + } + + /* Stop if there is no matching byte. */ + if (hi < lo || byts[lo] != c) + break; + + /* Continue at the child (if there is one). */ + arridx = idxs[lo]; + ++wlen; + --flen; + } +} + +/* + * Need to fold at least one more character. Do until next non-word character + * for efficiency. Include the non-word character too. + * Return the length of the folded chars in bytes. + */ + static int +fold_more(matchinf_T *mip) +{ + int flen; + char_u *p; + + p = mip->mi_fend; + do + { + MB_PTR_ADV(mip->mi_fend); + } while (*mip->mi_fend != NUL && spell_iswordp(mip->mi_fend, mip->mi_win)); + + /* Include the non-word character so that we can check for the word end. */ + if (*mip->mi_fend != NUL) + MB_PTR_ADV(mip->mi_fend); + + (void)spell_casefold(p, (int)(mip->mi_fend - p), + mip->mi_fword + mip->mi_fwordlen, + MAXWLEN - mip->mi_fwordlen); + flen = (int)STRLEN(mip->mi_fword + mip->mi_fwordlen); + mip->mi_fwordlen += flen; + return flen; +} + +/* + * Check case flags for a word. Return TRUE if the word has the requested + * case. + */ + static int +spell_valid_case( + int wordflags, /* flags for the checked word. */ + int treeflags) /* flags for the word in the spell tree */ +{ + return ((wordflags == WF_ALLCAP && (treeflags & WF_FIXCAP) == 0) + || ((treeflags & (WF_ALLCAP | WF_KEEPCAP)) == 0 + && ((treeflags & WF_ONECAP) == 0 + || (wordflags & WF_ONECAP) != 0))); +} + +/* + * Return TRUE if spell checking is not enabled. + */ + static int +no_spell_checking(win_T *wp) +{ + if (!wp->w_p_spell || *wp->w_s->b_p_spl == NUL + || wp->w_s->b_langp.ga_len == 0) + { + emsg(_("E756: Spell checking is not enabled")); + return TRUE; + } + return FALSE; +} + +/* + * Move to next spell error. + * "curline" is FALSE for "[s", "]s", "[S" and "]S". + * "curline" is TRUE to find word under/after cursor in the same line. + * For Insert mode completion "dir" is BACKWARD and "curline" is TRUE: move + * to after badly spelled word before the cursor. + * Return 0 if not found, length of the badly spelled word otherwise. + */ + int +spell_move_to( + win_T *wp, + int dir, /* FORWARD or BACKWARD */ + int allwords, /* TRUE for "[s"/"]s", FALSE for "[S"/"]S" */ + int curline, + hlf_T *attrp) /* return: attributes of bad word or NULL + (only when "dir" is FORWARD) */ +{ + linenr_T lnum; + pos_T found_pos; + int found_len = 0; + char_u *line; + char_u *p; + char_u *endp; + hlf_T attr; + int len; +#ifdef FEAT_SYN_HL + int has_syntax = syntax_present(wp); +#endif + int col; + int can_spell; + char_u *buf = NULL; + int buflen = 0; + int skip = 0; + int capcol = -1; + int found_one = FALSE; + int wrapped = FALSE; + + if (no_spell_checking(wp)) + return 0; + + /* + * Start looking for bad word at the start of the line, because we can't + * start halfway a word, we don't know where it starts or ends. + * + * When searching backwards, we continue in the line to find the last + * bad word (in the cursor line: before the cursor). + * + * We concatenate the start of the next line, so that wrapped words work + * (e.g. "et<line-break>cetera"). Doesn't work when searching backwards + * though... + */ + lnum = wp->w_cursor.lnum; + CLEAR_POS(&found_pos); + + while (!got_int) + { + line = ml_get_buf(wp->w_buffer, lnum, FALSE); + + len = (int)STRLEN(line); + if (buflen < len + MAXWLEN + 2) + { + vim_free(buf); + buflen = len + MAXWLEN + 2; + buf = alloc(buflen); + if (buf == NULL) + break; + } + + /* In first line check first word for Capital. */ + if (lnum == 1) + capcol = 0; + + /* For checking first word with a capital skip white space. */ + if (capcol == 0) + capcol = getwhitecols(line); + else if (curline && wp == curwin) + { + /* For spellbadword(): check if first word needs a capital. */ + col = getwhitecols(line); + if (check_need_cap(lnum, col)) + capcol = col; + + /* Need to get the line again, may have looked at the previous + * one. */ + line = ml_get_buf(wp->w_buffer, lnum, FALSE); + } + + /* Copy the line into "buf" and append the start of the next line if + * possible. */ + STRCPY(buf, line); + if (lnum < wp->w_buffer->b_ml.ml_line_count) + spell_cat_line(buf + STRLEN(buf), + ml_get_buf(wp->w_buffer, lnum + 1, FALSE), MAXWLEN); + + p = buf + skip; + endp = buf + len; + while (p < endp) + { + /* When searching backward don't search after the cursor. Unless + * we wrapped around the end of the buffer. */ + if (dir == BACKWARD + && lnum == wp->w_cursor.lnum + && !wrapped + && (colnr_T)(p - buf) >= wp->w_cursor.col) + break; + + /* start of word */ + attr = HLF_COUNT; + len = spell_check(wp, p, &attr, &capcol, FALSE); + + if (attr != HLF_COUNT) + { + /* We found a bad word. Check the attribute. */ + if (allwords || attr == HLF_SPB) + { + /* When searching forward only accept a bad word after + * the cursor. */ + if (dir == BACKWARD + || lnum != wp->w_cursor.lnum + || (lnum == wp->w_cursor.lnum + && (wrapped + || (colnr_T)(curline ? p - buf + len + : p - buf) + > wp->w_cursor.col))) + { +#ifdef FEAT_SYN_HL + if (has_syntax) + { + col = (int)(p - buf); + (void)syn_get_id(wp, lnum, (colnr_T)col, + FALSE, &can_spell, FALSE); + if (!can_spell) + attr = HLF_COUNT; + } + else +#endif + can_spell = TRUE; + + if (can_spell) + { + found_one = TRUE; + found_pos.lnum = lnum; + found_pos.col = (int)(p - buf); + found_pos.coladd = 0; + if (dir == FORWARD) + { + /* No need to search further. */ + wp->w_cursor = found_pos; + vim_free(buf); + if (attrp != NULL) + *attrp = attr; + return len; + } + else if (curline) + /* Insert mode completion: put cursor after + * the bad word. */ + found_pos.col += len; + found_len = len; + } + } + else + found_one = TRUE; + } + } + + /* advance to character after the word */ + p += len; + capcol -= len; + } + + if (dir == BACKWARD && found_pos.lnum != 0) + { + /* Use the last match in the line (before the cursor). */ + wp->w_cursor = found_pos; + vim_free(buf); + return found_len; + } + + if (curline) + break; /* only check cursor line */ + + /* If we are back at the starting line and searched it again there + * is no match, give up. */ + if (lnum == wp->w_cursor.lnum && wrapped) + break; + + /* Advance to next line. */ + if (dir == BACKWARD) + { + if (lnum > 1) + --lnum; + else if (!p_ws) + break; /* at first line and 'nowrapscan' */ + else + { + /* Wrap around to the end of the buffer. May search the + * starting line again and accept the last match. */ + lnum = wp->w_buffer->b_ml.ml_line_count; + wrapped = TRUE; + if (!shortmess(SHM_SEARCH)) + give_warning((char_u *)_(top_bot_msg), TRUE); + } + capcol = -1; + } + else + { + if (lnum < wp->w_buffer->b_ml.ml_line_count) + ++lnum; + else if (!p_ws) + break; /* at first line and 'nowrapscan' */ + else + { + /* Wrap around to the start of the buffer. May search the + * starting line again and accept the first match. */ + lnum = 1; + wrapped = TRUE; + if (!shortmess(SHM_SEARCH)) + give_warning((char_u *)_(bot_top_msg), TRUE); + } + + /* If we are back at the starting line and there is no match then + * give up. */ + if (lnum == wp->w_cursor.lnum && !found_one) + break; + + /* Skip the characters at the start of the next line that were + * included in a match crossing line boundaries. */ + if (attr == HLF_COUNT) + skip = (int)(p - endp); + else + skip = 0; + + /* Capcol skips over the inserted space. */ + --capcol; + + /* But after empty line check first word in next line */ + if (*skipwhite(line) == NUL) + capcol = 0; + } + + line_breakcheck(); + } + + vim_free(buf); + return 0; +} + +/* + * For spell checking: concatenate the start of the following line "line" into + * "buf", blanking-out special characters. Copy less then "maxlen" bytes. + * Keep the blanks at the start of the next line, this is used in win_line() + * to skip those bytes if the word was OK. + */ + void +spell_cat_line(char_u *buf, char_u *line, int maxlen) +{ + char_u *p; + int n; + + p = skipwhite(line); + while (vim_strchr((char_u *)"*#/\"\t", *p) != NULL) + p = skipwhite(p + 1); + + if (*p != NUL) + { + /* Only worth concatenating if there is something else than spaces to + * concatenate. */ + n = (int)(p - line) + 1; + if (n < maxlen - 1) + { + vim_memset(buf, ' ', n); + vim_strncpy(buf + n, p, maxlen - 1 - n); + } + } +} + +/* + * Structure used for the cookie argument of do_in_runtimepath(). + */ +typedef struct spelload_S +{ + char_u sl_lang[MAXWLEN + 1]; /* language name */ + slang_T *sl_slang; /* resulting slang_T struct */ + int sl_nobreak; /* NOBREAK language found */ +} spelload_T; + +/* + * Load word list(s) for "lang" from Vim spell file(s). + * "lang" must be the language without the region: e.g., "en". + */ + static void +spell_load_lang(char_u *lang) +{ + char_u fname_enc[85]; + int r; + spelload_T sl; + int round; + + /* Copy the language name to pass it to spell_load_cb() as a cookie. + * It's truncated when an error is detected. */ + STRCPY(sl.sl_lang, lang); + sl.sl_slang = NULL; + sl.sl_nobreak = FALSE; + + /* We may retry when no spell file is found for the language, an + * autocommand may load it then. */ + for (round = 1; round <= 2; ++round) + { + /* + * Find the first spell file for "lang" in 'runtimepath' and load it. + */ + vim_snprintf((char *)fname_enc, sizeof(fname_enc) - 5, +#ifdef VMS + "spell/%s_%s.spl", +#else + "spell/%s.%s.spl", +#endif + lang, spell_enc()); + r = do_in_runtimepath(fname_enc, 0, spell_load_cb, &sl); + + if (r == FAIL && *sl.sl_lang != NUL) + { + /* Try loading the ASCII version. */ + vim_snprintf((char *)fname_enc, sizeof(fname_enc) - 5, +#ifdef VMS + "spell/%s_ascii.spl", +#else + "spell/%s.ascii.spl", +#endif + lang); + r = do_in_runtimepath(fname_enc, 0, spell_load_cb, &sl); + + if (r == FAIL && *sl.sl_lang != NUL && round == 1 + && apply_autocmds(EVENT_SPELLFILEMISSING, lang, + curbuf->b_fname, FALSE, curbuf)) + continue; + break; + } + break; + } + + if (r == FAIL) + { + smsg( +#ifdef VMS + _("Warning: Cannot find word list \"%s_%s.spl\" or \"%s_ascii.spl\""), +#else + _("Warning: Cannot find word list \"%s.%s.spl\" or \"%s.ascii.spl\""), +#endif + lang, spell_enc(), lang); + } + else if (sl.sl_slang != NULL) + { + /* At least one file was loaded, now load ALL the additions. */ + STRCPY(fname_enc + STRLEN(fname_enc) - 3, "add.spl"); + do_in_runtimepath(fname_enc, DIP_ALL, spell_load_cb, &sl); + } +} + +/* + * Return the encoding used for spell checking: Use 'encoding', except that we + * use "latin1" for "latin9". And limit to 60 characters (just in case). + */ + char_u * +spell_enc(void) +{ + + if (STRLEN(p_enc) < 60 && STRCMP(p_enc, "iso-8859-15") != 0) + return p_enc; + return (char_u *)"latin1"; +} + +/* + * Get the name of the .spl file for the internal wordlist into + * "fname[MAXPATHL]". + */ + static void +int_wordlist_spl(char_u *fname) +{ + vim_snprintf((char *)fname, MAXPATHL, SPL_FNAME_TMPL, + int_wordlist, spell_enc()); +} + +/* + * Allocate a new slang_T for language "lang". "lang" can be NULL. + * Caller must fill "sl_next". + */ + slang_T * +slang_alloc(char_u *lang) +{ + slang_T *lp; + + lp = (slang_T *)alloc_clear(sizeof(slang_T)); + if (lp != NULL) + { + if (lang != NULL) + lp->sl_name = vim_strsave(lang); + ga_init2(&lp->sl_rep, sizeof(fromto_T), 10); + ga_init2(&lp->sl_repsal, sizeof(fromto_T), 10); + lp->sl_compmax = MAXWLEN; + lp->sl_compsylmax = MAXWLEN; + hash_init(&lp->sl_wordcount); + } + + return lp; +} + +/* + * Free the contents of an slang_T and the structure itself. + */ + void +slang_free(slang_T *lp) +{ + vim_free(lp->sl_name); + vim_free(lp->sl_fname); + slang_clear(lp); + vim_free(lp); +} + +/* + * Clear an slang_T so that the file can be reloaded. + */ + void +slang_clear(slang_T *lp) +{ + garray_T *gap; + fromto_T *ftp; + salitem_T *smp; + int i; + int round; + + VIM_CLEAR(lp->sl_fbyts); + VIM_CLEAR(lp->sl_kbyts); + VIM_CLEAR(lp->sl_pbyts); + + VIM_CLEAR(lp->sl_fidxs); + VIM_CLEAR(lp->sl_kidxs); + VIM_CLEAR(lp->sl_pidxs); + + for (round = 1; round <= 2; ++round) + { + gap = round == 1 ? &lp->sl_rep : &lp->sl_repsal; + while (gap->ga_len > 0) + { + ftp = &((fromto_T *)gap->ga_data)[--gap->ga_len]; + vim_free(ftp->ft_from); + vim_free(ftp->ft_to); + } + ga_clear(gap); + } + + gap = &lp->sl_sal; + if (lp->sl_sofo) + { + /* "ga_len" is set to 1 without adding an item for latin1 */ + if (gap->ga_data != NULL) + /* SOFOFROM and SOFOTO items: free lists of wide characters. */ + for (i = 0; i < gap->ga_len; ++i) + vim_free(((int **)gap->ga_data)[i]); + } + else + /* SAL items: free salitem_T items */ + while (gap->ga_len > 0) + { + smp = &((salitem_T *)gap->ga_data)[--gap->ga_len]; + vim_free(smp->sm_lead); + /* Don't free sm_oneof and sm_rules, they point into sm_lead. */ + vim_free(smp->sm_to); + vim_free(smp->sm_lead_w); + vim_free(smp->sm_oneof_w); + vim_free(smp->sm_to_w); + } + ga_clear(gap); + + for (i = 0; i < lp->sl_prefixcnt; ++i) + vim_regfree(lp->sl_prefprog[i]); + lp->sl_prefixcnt = 0; + VIM_CLEAR(lp->sl_prefprog); + + VIM_CLEAR(lp->sl_info); + + VIM_CLEAR(lp->sl_midword); + + vim_regfree(lp->sl_compprog); + lp->sl_compprog = NULL; + VIM_CLEAR(lp->sl_comprules); + VIM_CLEAR(lp->sl_compstartflags); + VIM_CLEAR(lp->sl_compallflags); + + VIM_CLEAR(lp->sl_syllable); + ga_clear(&lp->sl_syl_items); + + ga_clear_strings(&lp->sl_comppat); + + hash_clear_all(&lp->sl_wordcount, WC_KEY_OFF); + hash_init(&lp->sl_wordcount); + + hash_clear_all(&lp->sl_map_hash, 0); + + /* Clear info from .sug file. */ + slang_clear_sug(lp); + + lp->sl_compmax = MAXWLEN; + lp->sl_compminlen = 0; + lp->sl_compsylmax = MAXWLEN; + lp->sl_regions[0] = NUL; +} + +/* + * Clear the info from the .sug file in "lp". + */ + void +slang_clear_sug(slang_T *lp) +{ + VIM_CLEAR(lp->sl_sbyts); + VIM_CLEAR(lp->sl_sidxs); + close_spellbuf(lp->sl_sugbuf); + lp->sl_sugbuf = NULL; + lp->sl_sugloaded = FALSE; + lp->sl_sugtime = 0; +} + +/* + * Load one spell file and store the info into a slang_T. + * Invoked through do_in_runtimepath(). + */ + static void +spell_load_cb(char_u *fname, void *cookie) +{ + spelload_T *slp = (spelload_T *)cookie; + slang_T *slang; + + slang = spell_load_file(fname, slp->sl_lang, NULL, FALSE); + if (slang != NULL) + { + /* When a previously loaded file has NOBREAK also use it for the + * ".add" files. */ + if (slp->sl_nobreak && slang->sl_add) + slang->sl_nobreak = TRUE; + else if (slang->sl_nobreak) + slp->sl_nobreak = TRUE; + + slp->sl_slang = slang; + } +} + + +/* + * Add a word to the hashtable of common words. + * If it's already there then the counter is increased. + */ + void +count_common_word( + slang_T *lp, + char_u *word, + int len, /* word length, -1 for upto NUL */ + int count) /* 1 to count once, 10 to init */ +{ + hash_T hash; + hashitem_T *hi; + wordcount_T *wc; + char_u buf[MAXWLEN]; + char_u *p; + + if (len == -1) + p = word; + else + { + vim_strncpy(buf, word, len); + p = buf; + } + + hash = hash_hash(p); + hi = hash_lookup(&lp->sl_wordcount, p, hash); + if (HASHITEM_EMPTY(hi)) + { + wc = (wordcount_T *)alloc((unsigned)(sizeof(wordcount_T) + STRLEN(p))); + if (wc == NULL) + return; + STRCPY(wc->wc_word, p); + wc->wc_count = count; + hash_add_item(&lp->sl_wordcount, hi, wc->wc_word, hash); + } + else + { + wc = HI2WC(hi); + if ((wc->wc_count += count) < (unsigned)count) /* check for overflow */ + wc->wc_count = MAXWORDCOUNT; + } +} + +/* + * Adjust the score of common words. + */ + static int +score_wordcount_adj( + slang_T *slang, + int score, + char_u *word, + int split) /* word was split, less bonus */ +{ + hashitem_T *hi; + wordcount_T *wc; + int bonus; + int newscore; + + hi = hash_find(&slang->sl_wordcount, word); + if (!HASHITEM_EMPTY(hi)) + { + wc = HI2WC(hi); + if (wc->wc_count < SCORE_THRES2) + bonus = SCORE_COMMON1; + else if (wc->wc_count < SCORE_THRES3) + bonus = SCORE_COMMON2; + else + bonus = SCORE_COMMON3; + if (split) + newscore = score - bonus / 2; + else + newscore = score - bonus; + if (newscore < 0) + return 0; + return newscore; + } + return score; +} + + +/* + * Return TRUE if byte "n" appears in "str". + * Like strchr() but independent of locale. + */ + int +byte_in_str(char_u *str, int n) +{ + char_u *p; + + for (p = str; *p != NUL; ++p) + if (*p == n) + return TRUE; + return FALSE; +} + +#define SY_MAXLEN 30 +typedef struct syl_item_S +{ + char_u sy_chars[SY_MAXLEN]; /* the sequence of chars */ + int sy_len; +} syl_item_T; + +/* + * Truncate "slang->sl_syllable" at the first slash and put the following items + * in "slang->sl_syl_items". + */ + int +init_syl_tab(slang_T *slang) +{ + char_u *p; + char_u *s; + int l; + syl_item_T *syl; + + ga_init2(&slang->sl_syl_items, sizeof(syl_item_T), 4); + p = vim_strchr(slang->sl_syllable, '/'); + while (p != NULL) + { + *p++ = NUL; + if (*p == NUL) /* trailing slash */ + break; + s = p; + p = vim_strchr(p, '/'); + if (p == NULL) + l = (int)STRLEN(s); + else + l = (int)(p - s); + if (l >= SY_MAXLEN) + return SP_FORMERROR; + if (ga_grow(&slang->sl_syl_items, 1) == FAIL) + return SP_OTHERERROR; + syl = ((syl_item_T *)slang->sl_syl_items.ga_data) + + slang->sl_syl_items.ga_len++; + vim_strncpy(syl->sy_chars, s, l); + syl->sy_len = l; + } + return OK; +} + +/* + * Count the number of syllables in "word". + * When "word" contains spaces the syllables after the last space are counted. + * Returns zero if syllables are not defines. + */ + static int +count_syllables(slang_T *slang, char_u *word) +{ + int cnt = 0; + int skip = FALSE; + char_u *p; + int len; + int i; + syl_item_T *syl; + int c; + + if (slang->sl_syllable == NULL) + return 0; + + for (p = word; *p != NUL; p += len) + { + /* When running into a space reset counter. */ + if (*p == ' ') + { + len = 1; + cnt = 0; + continue; + } + + /* Find longest match of syllable items. */ + len = 0; + for (i = 0; i < slang->sl_syl_items.ga_len; ++i) + { + syl = ((syl_item_T *)slang->sl_syl_items.ga_data) + i; + if (syl->sy_len > len + && STRNCMP(p, syl->sy_chars, syl->sy_len) == 0) + len = syl->sy_len; + } + if (len != 0) /* found a match, count syllable */ + { + ++cnt; + skip = FALSE; + } + else + { + /* No recognized syllable item, at least a syllable char then? */ + c = mb_ptr2char(p); + len = (*mb_ptr2len)(p); + if (vim_strchr(slang->sl_syllable, c) == NULL) + skip = FALSE; /* No, search for next syllable */ + else if (!skip) + { + ++cnt; /* Yes, count it */ + skip = TRUE; /* don't count following syllable chars */ + } + } + } + return cnt; +} + +/* + * Parse 'spelllang' and set w_s->b_langp accordingly. + * Returns NULL if it's OK, an error message otherwise. + */ + char * +did_set_spelllang(win_T *wp) +{ + garray_T ga; + char_u *splp; + char_u *region; + char_u region_cp[3]; + int filename; + int region_mask; + slang_T *slang; + int c; + char_u lang[MAXWLEN + 1]; + char_u spf_name[MAXPATHL]; + int len; + char_u *p; + int round; + char_u *spf; + char_u *use_region = NULL; + int dont_use_region = FALSE; + int nobreak = FALSE; + int i, j; + langp_T *lp, *lp2; + static int recursive = FALSE; + char *ret_msg = NULL; + char_u *spl_copy; + bufref_T bufref; + + set_bufref(&bufref, wp->w_buffer); + + /* We don't want to do this recursively. May happen when a language is + * not available and the SpellFileMissing autocommand opens a new buffer + * in which 'spell' is set. */ + if (recursive) + return NULL; + recursive = TRUE; + + ga_init2(&ga, sizeof(langp_T), 2); + clear_midword(wp); + + /* Make a copy of 'spelllang', the SpellFileMissing autocommands may change + * it under our fingers. */ + spl_copy = vim_strsave(wp->w_s->b_p_spl); + if (spl_copy == NULL) + goto theend; + + wp->w_s->b_cjk = 0; + + /* Loop over comma separated language names. */ + for (splp = spl_copy; *splp != NUL; ) + { + /* Get one language name. */ + copy_option_part(&splp, lang, MAXWLEN, ","); + region = NULL; + len = (int)STRLEN(lang); + + if (STRCMP(lang, "cjk") == 0) + { + wp->w_s->b_cjk = 1; + continue; + } + + /* If the name ends in ".spl" use it as the name of the spell file. + * If there is a region name let "region" point to it and remove it + * from the name. */ + if (len > 4 && fnamecmp(lang + len - 4, ".spl") == 0) + { + filename = TRUE; + + /* Locate a region and remove it from the file name. */ + p = vim_strchr(gettail(lang), '_'); + if (p != NULL && ASCII_ISALPHA(p[1]) && ASCII_ISALPHA(p[2]) + && !ASCII_ISALPHA(p[3])) + { + vim_strncpy(region_cp, p + 1, 2); + mch_memmove(p, p + 3, len - (p - lang) - 2); + region = region_cp; + } + else + dont_use_region = TRUE; + + /* Check if we loaded this language before. */ + for (slang = first_lang; slang != NULL; slang = slang->sl_next) + if (fullpathcmp(lang, slang->sl_fname, FALSE) == FPC_SAME) + break; + } + else + { + filename = FALSE; + if (len > 3 && lang[len - 3] == '_') + { + region = lang + len - 2; + len -= 3; + lang[len] = NUL; + } + else + dont_use_region = TRUE; + + /* Check if we loaded this language before. */ + for (slang = first_lang; slang != NULL; slang = slang->sl_next) + if (STRICMP(lang, slang->sl_name) == 0) + break; + } + + if (region != NULL) + { + /* If the region differs from what was used before then don't + * use it for 'spellfile'. */ + if (use_region != NULL && STRCMP(region, use_region) != 0) + dont_use_region = TRUE; + use_region = region; + } + + /* If not found try loading the language now. */ + if (slang == NULL) + { + if (filename) + (void)spell_load_file(lang, lang, NULL, FALSE); + else + { + spell_load_lang(lang); + /* SpellFileMissing autocommands may do anything, including + * destroying the buffer we are using... */ + if (!bufref_valid(&bufref)) + { + ret_msg = N_("E797: SpellFileMissing autocommand deleted buffer"); + goto theend; + } + } + } + + /* + * Loop over the languages, there can be several files for "lang". + */ + for (slang = first_lang; slang != NULL; slang = slang->sl_next) + if (filename ? fullpathcmp(lang, slang->sl_fname, FALSE) == FPC_SAME + : STRICMP(lang, slang->sl_name) == 0) + { + region_mask = REGION_ALL; + if (!filename && region != NULL) + { + /* find region in sl_regions */ + c = find_region(slang->sl_regions, region); + if (c == REGION_ALL) + { + if (slang->sl_add) + { + if (*slang->sl_regions != NUL) + /* This addition file is for other regions. */ + region_mask = 0; + } + else + /* This is probably an error. Give a warning and + * accept the words anyway. */ + smsg(_("Warning: region %s not supported"), + region); + } + else + region_mask = 1 << c; + } + + if (region_mask != 0) + { + if (ga_grow(&ga, 1) == FAIL) + { + ga_clear(&ga); + ret_msg = e_outofmem; + goto theend; + } + LANGP_ENTRY(ga, ga.ga_len)->lp_slang = slang; + LANGP_ENTRY(ga, ga.ga_len)->lp_region = region_mask; + ++ga.ga_len; + use_midword(slang, wp); + if (slang->sl_nobreak) + nobreak = TRUE; + } + } + } + + /* round 0: load int_wordlist, if possible. + * round 1: load first name in 'spellfile'. + * round 2: load second name in 'spellfile. + * etc. */ + spf = curwin->w_s->b_p_spf; + for (round = 0; round == 0 || *spf != NUL; ++round) + { + if (round == 0) + { + /* Internal wordlist, if there is one. */ + if (int_wordlist == NULL) + continue; + int_wordlist_spl(spf_name); + } + else + { + /* One entry in 'spellfile'. */ + copy_option_part(&spf, spf_name, MAXPATHL - 5, ","); + STRCAT(spf_name, ".spl"); + + /* If it was already found above then skip it. */ + for (c = 0; c < ga.ga_len; ++c) + { + p = LANGP_ENTRY(ga, c)->lp_slang->sl_fname; + if (p != NULL && fullpathcmp(spf_name, p, FALSE) == FPC_SAME) + break; + } + if (c < ga.ga_len) + continue; + } + + /* Check if it was loaded already. */ + for (slang = first_lang; slang != NULL; slang = slang->sl_next) + if (fullpathcmp(spf_name, slang->sl_fname, FALSE) == FPC_SAME) + break; + if (slang == NULL) + { + /* Not loaded, try loading it now. The language name includes the + * region name, the region is ignored otherwise. for int_wordlist + * use an arbitrary name. */ + if (round == 0) + STRCPY(lang, "internal wordlist"); + else + { + vim_strncpy(lang, gettail(spf_name), MAXWLEN); + p = vim_strchr(lang, '.'); + if (p != NULL) + *p = NUL; /* truncate at ".encoding.add" */ + } + slang = spell_load_file(spf_name, lang, NULL, TRUE); + + /* If one of the languages has NOBREAK we assume the addition + * files also have this. */ + if (slang != NULL && nobreak) + slang->sl_nobreak = TRUE; + } + if (slang != NULL && ga_grow(&ga, 1) == OK) + { + region_mask = REGION_ALL; + if (use_region != NULL && !dont_use_region) + { + /* find region in sl_regions */ + c = find_region(slang->sl_regions, use_region); + if (c != REGION_ALL) + region_mask = 1 << c; + else if (*slang->sl_regions != NUL) + /* This spell file is for other regions. */ + region_mask = 0; + } + + if (region_mask != 0) + { + LANGP_ENTRY(ga, ga.ga_len)->lp_slang = slang; + LANGP_ENTRY(ga, ga.ga_len)->lp_sallang = NULL; + LANGP_ENTRY(ga, ga.ga_len)->lp_replang = NULL; + LANGP_ENTRY(ga, ga.ga_len)->lp_region = region_mask; + ++ga.ga_len; + use_midword(slang, wp); + } + } + } + + /* Everything is fine, store the new b_langp value. */ + ga_clear(&wp->w_s->b_langp); + wp->w_s->b_langp = ga; + + /* For each language figure out what language to use for sound folding and + * REP items. If the language doesn't support it itself use another one + * with the same name. E.g. for "en-math" use "en". */ + for (i = 0; i < ga.ga_len; ++i) + { + lp = LANGP_ENTRY(ga, i); + + /* sound folding */ + if (lp->lp_slang->sl_sal.ga_len > 0) + /* language does sound folding itself */ + lp->lp_sallang = lp->lp_slang; + else + /* find first similar language that does sound folding */ + for (j = 0; j < ga.ga_len; ++j) + { + lp2 = LANGP_ENTRY(ga, j); + if (lp2->lp_slang->sl_sal.ga_len > 0 + && STRNCMP(lp->lp_slang->sl_name, + lp2->lp_slang->sl_name, 2) == 0) + { + lp->lp_sallang = lp2->lp_slang; + break; + } + } + + /* REP items */ + if (lp->lp_slang->sl_rep.ga_len > 0) + /* language has REP items itself */ + lp->lp_replang = lp->lp_slang; + else + /* find first similar language that has REP items */ + for (j = 0; j < ga.ga_len; ++j) + { + lp2 = LANGP_ENTRY(ga, j); + if (lp2->lp_slang->sl_rep.ga_len > 0 + && STRNCMP(lp->lp_slang->sl_name, + lp2->lp_slang->sl_name, 2) == 0) + { + lp->lp_replang = lp2->lp_slang; + break; + } + } + } + +theend: + vim_free(spl_copy); + recursive = FALSE; + redraw_win_later(wp, NOT_VALID); + return ret_msg; +} + +/* + * Clear the midword characters for buffer "buf". + */ + static void +clear_midword(win_T *wp) +{ + vim_memset(wp->w_s->b_spell_ismw, 0, 256); + VIM_CLEAR(wp->w_s->b_spell_ismw_mb); +} + +/* + * Use the "sl_midword" field of language "lp" for buffer "buf". + * They add up to any currently used midword characters. + */ + static void +use_midword(slang_T *lp, win_T *wp) +{ + char_u *p; + + if (lp->sl_midword == NULL) /* there aren't any */ + return; + + for (p = lp->sl_midword; *p != NUL; ) + if (has_mbyte) + { + int c, l, n; + char_u *bp; + + c = mb_ptr2char(p); + l = (*mb_ptr2len)(p); + if (c < 256 && l <= 2) + wp->w_s->b_spell_ismw[c] = TRUE; + else if (wp->w_s->b_spell_ismw_mb == NULL) + /* First multi-byte char in "b_spell_ismw_mb". */ + wp->w_s->b_spell_ismw_mb = vim_strnsave(p, l); + else + { + /* Append multi-byte chars to "b_spell_ismw_mb". */ + n = (int)STRLEN(wp->w_s->b_spell_ismw_mb); + bp = vim_strnsave(wp->w_s->b_spell_ismw_mb, n + l); + if (bp != NULL) + { + vim_free(wp->w_s->b_spell_ismw_mb); + wp->w_s->b_spell_ismw_mb = bp; + vim_strncpy(bp + n, p, l); + } + } + p += l; + } + else + wp->w_s->b_spell_ismw[*p++] = TRUE; +} + +/* + * Find the region "region[2]" in "rp" (points to "sl_regions"). + * Each region is simply stored as the two characters of its name. + * Returns the index if found (first is 0), REGION_ALL if not found. + */ + static int +find_region(char_u *rp, char_u *region) +{ + int i; + + for (i = 0; ; i += 2) + { + if (rp[i] == NUL) + return REGION_ALL; + if (rp[i] == region[0] && rp[i + 1] == region[1]) + break; + } + return i / 2; +} + +/* + * Return case type of word: + * w word 0 + * Word WF_ONECAP + * W WORD WF_ALLCAP + * WoRd wOrd WF_KEEPCAP + */ + int +captype( + char_u *word, + char_u *end) /* When NULL use up to NUL byte. */ +{ + char_u *p; + int c; + int firstcap; + int allcap; + int past_second = FALSE; /* past second word char */ + + /* find first letter */ + for (p = word; !spell_iswordp_nmw(p, curwin); MB_PTR_ADV(p)) + if (end == NULL ? *p == NUL : p >= end) + return 0; /* only non-word characters, illegal word */ + if (has_mbyte) + c = mb_ptr2char_adv(&p); + else + c = *p++; + firstcap = allcap = SPELL_ISUPPER(c); + + /* + * Need to check all letters to find a word with mixed upper/lower. + * But a word with an upper char only at start is a ONECAP. + */ + for ( ; end == NULL ? *p != NUL : p < end; MB_PTR_ADV(p)) + if (spell_iswordp_nmw(p, curwin)) + { + c = PTR2CHAR(p); + if (!SPELL_ISUPPER(c)) + { + /* UUl -> KEEPCAP */ + if (past_second && allcap) + return WF_KEEPCAP; + allcap = FALSE; + } + else if (!allcap) + /* UlU -> KEEPCAP */ + return WF_KEEPCAP; + past_second = TRUE; + } + + if (allcap) + return WF_ALLCAP; + if (firstcap) + return WF_ONECAP; + return 0; +} + +/* + * Like captype() but for a KEEPCAP word add ONECAP if the word starts with a + * capital. So that make_case_word() can turn WOrd into Word. + * Add ALLCAP for "WOrD". + */ + static int +badword_captype(char_u *word, char_u *end) +{ + int flags = captype(word, end); + int c; + int l, u; + int first; + char_u *p; + + if (flags & WF_KEEPCAP) + { + /* Count the number of UPPER and lower case letters. */ + l = u = 0; + first = FALSE; + for (p = word; p < end; MB_PTR_ADV(p)) + { + c = PTR2CHAR(p); + if (SPELL_ISUPPER(c)) + { + ++u; + if (p == word) + first = TRUE; + } + else + ++l; + } + + /* If there are more UPPER than lower case letters suggest an + * ALLCAP word. Otherwise, if the first letter is UPPER then + * suggest ONECAP. Exception: "ALl" most likely should be "All", + * require three upper case letters. */ + if (u > l && u > 2) + flags |= WF_ALLCAP; + else if (first) + flags |= WF_ONECAP; + + if (u >= 2 && l >= 2) /* maCARONI maCAroni */ + flags |= WF_MIXCAP; + } + return flags; +} + +/* + * Delete the internal wordlist and its .spl file. + */ + void +spell_delete_wordlist(void) +{ + char_u fname[MAXPATHL]; + + if (int_wordlist != NULL) + { + mch_remove(int_wordlist); + int_wordlist_spl(fname); + mch_remove(fname); + VIM_CLEAR(int_wordlist); + } +} + +/* + * Free all languages. + */ + void +spell_free_all(void) +{ + slang_T *slang; + buf_T *buf; + + /* Go through all buffers and handle 'spelllang'. <VN> */ + FOR_ALL_BUFFERS(buf) + ga_clear(&buf->b_s.b_langp); + + while (first_lang != NULL) + { + slang = first_lang; + first_lang = slang->sl_next; + slang_free(slang); + } + + spell_delete_wordlist(); + + VIM_CLEAR(repl_to); + VIM_CLEAR(repl_from); +} + +/* + * Clear all spelling tables and reload them. + * Used after 'encoding' is set and when ":mkspell" was used. + */ + void +spell_reload(void) +{ + win_T *wp; + + /* Initialize the table for spell_iswordp(). */ + init_spell_chartab(); + + /* Unload all allocated memory. */ + spell_free_all(); + + /* Go through all buffers and handle 'spelllang'. */ + FOR_ALL_WINDOWS(wp) + { + /* Only load the wordlists when 'spelllang' is set and there is a + * window for this buffer in which 'spell' is set. */ + if (*wp->w_s->b_p_spl != NUL) + { + if (wp->w_p_spell) + { + (void)did_set_spelllang(wp); + break; + } + } + } +} + +/* + * Opposite of offset2bytes(). + * "pp" points to the bytes and is advanced over it. + * Returns the offset. + */ + static int +bytes2offset(char_u **pp) +{ + char_u *p = *pp; + int nr; + int c; + + c = *p++; + if ((c & 0x80) == 0x00) /* 1 byte */ + { + nr = c - 1; + } + else if ((c & 0xc0) == 0x80) /* 2 bytes */ + { + nr = (c & 0x3f) - 1; + nr = nr * 255 + (*p++ - 1); + } + else if ((c & 0xe0) == 0xc0) /* 3 bytes */ + { + nr = (c & 0x1f) - 1; + nr = nr * 255 + (*p++ - 1); + nr = nr * 255 + (*p++ - 1); + } + else /* 4 bytes */ + { + nr = (c & 0x0f) - 1; + nr = nr * 255 + (*p++ - 1); + nr = nr * 255 + (*p++ - 1); + nr = nr * 255 + (*p++ - 1); + } + + *pp = p; + return nr; +} + + +/* + * Open a spell buffer. This is a nameless buffer that is not in the buffer + * list and only contains text lines. Can use a swapfile to reduce memory + * use. + * Most other fields are invalid! Esp. watch out for string options being + * NULL and there is no undo info. + * Returns NULL when out of memory. + */ + buf_T * +open_spellbuf(void) +{ + buf_T *buf; + + buf = (buf_T *)alloc_clear(sizeof(buf_T)); + if (buf != NULL) + { + buf->b_spell = TRUE; + buf->b_p_swf = TRUE; /* may create a swap file */ +#ifdef FEAT_CRYPT + buf->b_p_key = empty_option; +#endif + ml_open(buf); + ml_open_file(buf); /* create swap file now */ + } + return buf; +} + +/* + * Close the buffer used for spell info. + */ + void +close_spellbuf(buf_T *buf) +{ + if (buf != NULL) + { + ml_close(buf, TRUE); + vim_free(buf); + } +} + +/* + * Init the chartab used for spelling for ASCII. + * EBCDIC is not supported! + */ + void +clear_spell_chartab(spelltab_T *sp) +{ + int i; + + /* Init everything to FALSE. */ + vim_memset(sp->st_isw, FALSE, sizeof(sp->st_isw)); + vim_memset(sp->st_isu, FALSE, sizeof(sp->st_isu)); + for (i = 0; i < 256; ++i) + { + sp->st_fold[i] = i; + sp->st_upper[i] = i; + } + + /* We include digits. A word shouldn't start with a digit, but handling + * that is done separately. */ + for (i = '0'; i <= '9'; ++i) + sp->st_isw[i] = TRUE; + for (i = 'A'; i <= 'Z'; ++i) + { + sp->st_isw[i] = TRUE; + sp->st_isu[i] = TRUE; + sp->st_fold[i] = i + 0x20; + } + for (i = 'a'; i <= 'z'; ++i) + { + sp->st_isw[i] = TRUE; + sp->st_upper[i] = i - 0x20; + } +} + +/* + * Init the chartab used for spelling. Only depends on 'encoding'. + * Called once while starting up and when 'encoding' changes. + * The default is to use isalpha(), but the spell file should define the word + * characters to make it possible that 'encoding' differs from the current + * locale. For utf-8 we don't use isalpha() but our own functions. + */ + void +init_spell_chartab(void) +{ + int i; + + did_set_spelltab = FALSE; + clear_spell_chartab(&spelltab); + if (enc_dbcs) + { + /* DBCS: assume double-wide characters are word characters. */ + for (i = 128; i <= 255; ++i) + if (MB_BYTE2LEN(i) == 2) + spelltab.st_isw[i] = TRUE; + } + else if (enc_utf8) + { + for (i = 128; i < 256; ++i) + { + int f = utf_fold(i); + int u = utf_toupper(i); + + spelltab.st_isu[i] = utf_isupper(i); + spelltab.st_isw[i] = spelltab.st_isu[i] || utf_islower(i); + /* The folded/upper-cased value is different between latin1 and + * utf8 for 0xb5, causing E763 for no good reason. Use the latin1 + * value for utf-8 to avoid this. */ + spelltab.st_fold[i] = (f < 256) ? f : i; + spelltab.st_upper[i] = (u < 256) ? u : i; + } + } + else + { + /* Rough guess: use locale-dependent library functions. */ + for (i = 128; i < 256; ++i) + { + if (MB_ISUPPER(i)) + { + spelltab.st_isw[i] = TRUE; + spelltab.st_isu[i] = TRUE; + spelltab.st_fold[i] = MB_TOLOWER(i); + } + else if (MB_ISLOWER(i)) + { + spelltab.st_isw[i] = TRUE; + spelltab.st_upper[i] = MB_TOUPPER(i); + } + } + } +} + + +/* + * Return TRUE if "p" points to a word character. + * As a special case we see "midword" characters as word character when it is + * followed by a word character. This finds they'there but not 'they there'. + * Thus this only works properly when past the first character of the word. + */ + static int +spell_iswordp( + char_u *p, + win_T *wp) /* buffer used */ +{ + char_u *s; + int l; + int c; + + if (has_mbyte) + { + l = MB_PTR2LEN(p); + s = p; + if (l == 1) + { + /* be quick for ASCII */ + if (wp->w_s->b_spell_ismw[*p]) + s = p + 1; /* skip a mid-word character */ + } + else + { + c = mb_ptr2char(p); + if (c < 256 ? wp->w_s->b_spell_ismw[c] + : (wp->w_s->b_spell_ismw_mb != NULL + && vim_strchr(wp->w_s->b_spell_ismw_mb, c) != NULL)) + s = p + l; + } + + c = mb_ptr2char(s); + if (c > 255) + return spell_mb_isword_class(mb_get_class(s), wp); + return spelltab.st_isw[c]; + } + + return spelltab.st_isw[wp->w_s->b_spell_ismw[*p] ? p[1] : p[0]]; +} + +/* + * Return TRUE if "p" points to a word character. + * Unlike spell_iswordp() this doesn't check for "midword" characters. + */ + int +spell_iswordp_nmw(char_u *p, win_T *wp) +{ + int c; + + if (has_mbyte) + { + c = mb_ptr2char(p); + if (c > 255) + return spell_mb_isword_class(mb_get_class(p), wp); + return spelltab.st_isw[c]; + } + return spelltab.st_isw[*p]; +} + +/* + * Return TRUE if word class indicates a word character. + * Only for characters above 255. + * Unicode subscript and superscript are not considered word characters. + * See also dbcs_class() and utf_class() in mbyte.c. + */ + static int +spell_mb_isword_class(int cl, win_T *wp) +{ + if (wp->w_s->b_cjk) + /* East Asian characters are not considered word characters. */ + return cl == 2 || cl == 0x2800; + return cl >= 2 && cl != 0x2070 && cl != 0x2080; +} + +/* + * Return TRUE if "p" points to a word character. + * Wide version of spell_iswordp(). + */ + static int +spell_iswordp_w(int *p, win_T *wp) +{ + int *s; + + if (*p < 256 ? wp->w_s->b_spell_ismw[*p] + : (wp->w_s->b_spell_ismw_mb != NULL + && vim_strchr(wp->w_s->b_spell_ismw_mb, *p) != NULL)) + s = p + 1; + else + s = p; + + if (*s > 255) + { + if (enc_utf8) + return spell_mb_isword_class(utf_class(*s), wp); + if (enc_dbcs) + return spell_mb_isword_class( + dbcs_class((unsigned)*s >> 8, *s & 0xff), wp); + return 0; + } + return spelltab.st_isw[*s]; +} + +/* + * Case-fold "str[len]" into "buf[buflen]". The result is NUL terminated. + * Uses the character definitions from the .spl file. + * When using a multi-byte 'encoding' the length may change! + * Returns FAIL when something wrong. + */ + int +spell_casefold( + char_u *str, + int len, + char_u *buf, + int buflen) +{ + int i; + + if (len >= buflen) + { + buf[0] = NUL; + return FAIL; /* result will not fit */ + } + + if (has_mbyte) + { + int outi = 0; + char_u *p; + int c; + + /* Fold one character at a time. */ + for (p = str; p < str + len; ) + { + if (outi + MB_MAXBYTES > buflen) + { + buf[outi] = NUL; + return FAIL; + } + c = mb_cptr2char_adv(&p); + outi += mb_char2bytes(SPELL_TOFOLD(c), buf + outi); + } + buf[outi] = NUL; + } + else + { + /* Be quick for non-multibyte encodings. */ + for (i = 0; i < len; ++i) + buf[i] = spelltab.st_fold[str[i]]; + buf[i] = NUL; + } + + return OK; +} + +/* values for sps_flags */ +#define SPS_BEST 1 +#define SPS_FAST 2 +#define SPS_DOUBLE 4 + +static int sps_flags = SPS_BEST; /* flags from 'spellsuggest' */ +static int sps_limit = 9999; /* max nr of suggestions given */ + +/* + * Check the 'spellsuggest' option. Return FAIL if it's wrong. + * Sets "sps_flags" and "sps_limit". + */ + int +spell_check_sps(void) +{ + char_u *p; + char_u *s; + char_u buf[MAXPATHL]; + int f; + + sps_flags = 0; + sps_limit = 9999; + + for (p = p_sps; *p != NUL; ) + { + copy_option_part(&p, buf, MAXPATHL, ","); + + f = 0; + if (VIM_ISDIGIT(*buf)) + { + s = buf; + sps_limit = getdigits(&s); + if (*s != NUL && !VIM_ISDIGIT(*s)) + f = -1; + } + else if (STRCMP(buf, "best") == 0) + f = SPS_BEST; + else if (STRCMP(buf, "fast") == 0) + f = SPS_FAST; + else if (STRCMP(buf, "double") == 0) + f = SPS_DOUBLE; + else if (STRNCMP(buf, "expr:", 5) != 0 + && STRNCMP(buf, "file:", 5) != 0) + f = -1; + + if (f == -1 || (sps_flags != 0 && f != 0)) + { + sps_flags = SPS_BEST; + sps_limit = 9999; + return FAIL; + } + if (f != 0) + sps_flags = f; + } + + if (sps_flags == 0) + sps_flags = SPS_BEST; + + return OK; +} + +/* + * "z=": Find badly spelled word under or after the cursor. + * Give suggestions for the properly spelled word. + * In Visual mode use the highlighted word as the bad word. + * When "count" is non-zero use that suggestion. + */ + void +spell_suggest(int count) +{ + char_u *line; + pos_T prev_cursor = curwin->w_cursor; + char_u wcopy[MAXWLEN + 2]; + char_u *p; + int i; + int c; + suginfo_T sug; + suggest_T *stp; + int mouse_used; + int need_cap; + int limit; + int selected = count; + int badlen = 0; + int msg_scroll_save = msg_scroll; + + if (no_spell_checking(curwin)) + return; + + if (VIsual_active) + { + /* Use the Visually selected text as the bad word. But reject + * a multi-line selection. */ + if (curwin->w_cursor.lnum != VIsual.lnum) + { + vim_beep(BO_SPELL); + return; + } + badlen = (int)curwin->w_cursor.col - (int)VIsual.col; + if (badlen < 0) + badlen = -badlen; + else + curwin->w_cursor.col = VIsual.col; + ++badlen; + end_visual_mode(); + } + /* Find the start of the badly spelled word. */ + else if (spell_move_to(curwin, FORWARD, TRUE, TRUE, NULL) == 0 + || curwin->w_cursor.col > prev_cursor.col) + { + /* No bad word or it starts after the cursor: use the word under the + * cursor. */ + curwin->w_cursor = prev_cursor; + line = ml_get_curline(); + p = line + curwin->w_cursor.col; + /* Backup to before start of word. */ + while (p > line && spell_iswordp_nmw(p, curwin)) + MB_PTR_BACK(line, p); + /* Forward to start of word. */ + while (*p != NUL && !spell_iswordp_nmw(p, curwin)) + MB_PTR_ADV(p); + + if (!spell_iswordp_nmw(p, curwin)) /* No word found. */ + { + beep_flush(); + return; + } + curwin->w_cursor.col = (colnr_T)(p - line); + } + + /* Get the word and its length. */ + + /* Figure out if the word should be capitalised. */ + need_cap = check_need_cap(curwin->w_cursor.lnum, curwin->w_cursor.col); + + /* Make a copy of current line since autocommands may free the line. */ + line = vim_strsave(ml_get_curline()); + if (line == NULL) + goto skip; + + /* Get the list of suggestions. Limit to 'lines' - 2 or the number in + * 'spellsuggest', whatever is smaller. */ + if (sps_limit > (int)Rows - 2) + limit = (int)Rows - 2; + else + limit = sps_limit; + spell_find_suggest(line + curwin->w_cursor.col, badlen, &sug, limit, + TRUE, need_cap, TRUE); + + if (sug.su_ga.ga_len == 0) + msg(_("Sorry, no suggestions")); + else if (count > 0) + { + if (count > sug.su_ga.ga_len) + smsg(_("Sorry, only %ld suggestions"), + (long)sug.su_ga.ga_len); + } + else + { + VIM_CLEAR(repl_from); + VIM_CLEAR(repl_to); + +#ifdef FEAT_RIGHTLEFT + /* When 'rightleft' is set the list is drawn right-left. */ + cmdmsg_rl = curwin->w_p_rl; + if (cmdmsg_rl) + msg_col = Columns - 1; +#endif + + /* List the suggestions. */ + msg_start(); + msg_row = Rows - 1; /* for when 'cmdheight' > 1 */ + lines_left = Rows; /* avoid more prompt */ + vim_snprintf((char *)IObuff, IOSIZE, _("Change \"%.*s\" to:"), + sug.su_badlen, sug.su_badptr); +#ifdef FEAT_RIGHTLEFT + if (cmdmsg_rl && STRNCMP(IObuff, "Change", 6) == 0) + { + /* And now the rabbit from the high hat: Avoid showing the + * untranslated message rightleft. */ + vim_snprintf((char *)IObuff, IOSIZE, ":ot \"%.*s\" egnahC", + sug.su_badlen, sug.su_badptr); + } +#endif + msg_puts((char *)IObuff); + msg_clr_eos(); + msg_putchar('\n'); + + msg_scroll = TRUE; + for (i = 0; i < sug.su_ga.ga_len; ++i) + { + stp = &SUG(sug.su_ga, i); + + /* The suggested word may replace only part of the bad word, add + * the not replaced part. */ + vim_strncpy(wcopy, stp->st_word, MAXWLEN); + if (sug.su_badlen > stp->st_orglen) + vim_strncpy(wcopy + stp->st_wordlen, + sug.su_badptr + stp->st_orglen, + sug.su_badlen - stp->st_orglen); + vim_snprintf((char *)IObuff, IOSIZE, "%2d", i + 1); +#ifdef FEAT_RIGHTLEFT + if (cmdmsg_rl) + rl_mirror(IObuff); +#endif + msg_puts((char *)IObuff); + + vim_snprintf((char *)IObuff, IOSIZE, " \"%s\"", wcopy); + msg_puts((char *)IObuff); + + /* The word may replace more than "su_badlen". */ + if (sug.su_badlen < stp->st_orglen) + { + vim_snprintf((char *)IObuff, IOSIZE, _(" < \"%.*s\""), + stp->st_orglen, sug.su_badptr); + msg_puts((char *)IObuff); + } + + if (p_verbose > 0) + { + /* Add the score. */ + if (sps_flags & (SPS_DOUBLE | SPS_BEST)) + vim_snprintf((char *)IObuff, IOSIZE, " (%s%d - %d)", + stp->st_salscore ? "s " : "", + stp->st_score, stp->st_altscore); + else + vim_snprintf((char *)IObuff, IOSIZE, " (%d)", + stp->st_score); +#ifdef FEAT_RIGHTLEFT + if (cmdmsg_rl) + /* Mirror the numbers, but keep the leading space. */ + rl_mirror(IObuff + 1); +#endif + msg_advance(30); + msg_puts((char *)IObuff); + } + msg_putchar('\n'); + } + +#ifdef FEAT_RIGHTLEFT + cmdmsg_rl = FALSE; + msg_col = 0; +#endif + /* Ask for choice. */ + selected = prompt_for_number(&mouse_used); + if (mouse_used) + selected -= lines_left; + lines_left = Rows; /* avoid more prompt */ + /* don't delay for 'smd' in normal_cmd() */ + msg_scroll = msg_scroll_save; + } + + if (selected > 0 && selected <= sug.su_ga.ga_len && u_save_cursor() == OK) + { + /* Save the from and to text for :spellrepall. */ + stp = &SUG(sug.su_ga, selected - 1); + if (sug.su_badlen > stp->st_orglen) + { + /* Replacing less than "su_badlen", append the remainder to + * repl_to. */ + repl_from = vim_strnsave(sug.su_badptr, sug.su_badlen); + vim_snprintf((char *)IObuff, IOSIZE, "%s%.*s", stp->st_word, + sug.su_badlen - stp->st_orglen, + sug.su_badptr + stp->st_orglen); + repl_to = vim_strsave(IObuff); + } + else + { + /* Replacing su_badlen or more, use the whole word. */ + repl_from = vim_strnsave(sug.su_badptr, stp->st_orglen); + repl_to = vim_strsave(stp->st_word); + } + + /* Replace the word. */ + p = alloc((unsigned)STRLEN(line) - stp->st_orglen + + stp->st_wordlen + 1); + if (p != NULL) + { + c = (int)(sug.su_badptr - line); + mch_memmove(p, line, c); + STRCPY(p + c, stp->st_word); + STRCAT(p, sug.su_badptr + stp->st_orglen); + ml_replace(curwin->w_cursor.lnum, p, FALSE); + curwin->w_cursor.col = c; + + /* For redo we use a change-word command. */ + ResetRedobuff(); + AppendToRedobuff((char_u *)"ciw"); + AppendToRedobuffLit(p + c, + stp->st_wordlen + sug.su_badlen - stp->st_orglen); + AppendCharToRedobuff(ESC); + + /* After this "p" may be invalid. */ + changed_bytes(curwin->w_cursor.lnum, c); + } + } + else + curwin->w_cursor = prev_cursor; + + spell_find_cleanup(&sug); +skip: + vim_free(line); +} + +/* + * Check if the word at line "lnum" column "col" is required to start with a + * capital. This uses 'spellcapcheck' of the current buffer. + */ + static int +check_need_cap(linenr_T lnum, colnr_T col) +{ + int need_cap = FALSE; + char_u *line; + char_u *line_copy = NULL; + char_u *p; + colnr_T endcol; + regmatch_T regmatch; + + if (curwin->w_s->b_cap_prog == NULL) + return FALSE; + + line = ml_get_curline(); + endcol = 0; + if (getwhitecols(line) >= (int)col) + { + /* At start of line, check if previous line is empty or sentence + * ends there. */ + if (lnum == 1) + need_cap = TRUE; + else + { + line = ml_get(lnum - 1); + if (*skipwhite(line) == NUL) + need_cap = TRUE; + else + { + /* Append a space in place of the line break. */ + line_copy = concat_str(line, (char_u *)" "); + line = line_copy; + endcol = (colnr_T)STRLEN(line); + } + } + } + else + endcol = col; + + if (endcol > 0) + { + /* Check if sentence ends before the bad word. */ + regmatch.regprog = curwin->w_s->b_cap_prog; + regmatch.rm_ic = FALSE; + p = line + endcol; + for (;;) + { + MB_PTR_BACK(line, p); + if (p == line || spell_iswordp_nmw(p, curwin)) + break; + if (vim_regexec(®match, p, 0) + && regmatch.endp[0] == line + endcol) + { + need_cap = TRUE; + break; + } + } + curwin->w_s->b_cap_prog = regmatch.regprog; + } + + vim_free(line_copy); + + return need_cap; +} + + +/* + * ":spellrepall" + */ + void +ex_spellrepall(exarg_T *eap UNUSED) +{ + pos_T pos = curwin->w_cursor; + char_u *frompat; + int addlen; + char_u *line; + char_u *p; + int save_ws = p_ws; + linenr_T prev_lnum = 0; + + if (repl_from == NULL || repl_to == NULL) + { + emsg(_("E752: No previous spell replacement")); + return; + } + addlen = (int)(STRLEN(repl_to) - STRLEN(repl_from)); + + frompat = alloc((unsigned)STRLEN(repl_from) + 7); + if (frompat == NULL) + return; + sprintf((char *)frompat, "\\V\\<%s\\>", repl_from); + p_ws = FALSE; + + sub_nsubs = 0; + sub_nlines = 0; + curwin->w_cursor.lnum = 0; + while (!got_int) + { + if (do_search(NULL, '/', frompat, 1L, SEARCH_KEEP, NULL, NULL) == 0 + || u_save_cursor() == FAIL) + break; + + /* Only replace when the right word isn't there yet. This happens + * when changing "etc" to "etc.". */ + line = ml_get_curline(); + if (addlen <= 0 || STRNCMP(line + curwin->w_cursor.col, + repl_to, STRLEN(repl_to)) != 0) + { + p = alloc((unsigned)STRLEN(line) + addlen + 1); + if (p == NULL) + break; + mch_memmove(p, line, curwin->w_cursor.col); + STRCPY(p + curwin->w_cursor.col, repl_to); + STRCAT(p, line + curwin->w_cursor.col + STRLEN(repl_from)); + ml_replace(curwin->w_cursor.lnum, p, FALSE); + changed_bytes(curwin->w_cursor.lnum, curwin->w_cursor.col); + + if (curwin->w_cursor.lnum != prev_lnum) + { + ++sub_nlines; + prev_lnum = curwin->w_cursor.lnum; + } + ++sub_nsubs; + } + curwin->w_cursor.col += (colnr_T)STRLEN(repl_to); + } + + p_ws = save_ws; + curwin->w_cursor = pos; + vim_free(frompat); + + if (sub_nsubs == 0) + semsg(_("E753: Not found: %s"), repl_from); + else + do_sub_msg(FALSE); +} + +/* + * Find spell suggestions for "word". Return them in the growarray "*gap" as + * a list of allocated strings. + */ + void +spell_suggest_list( + garray_T *gap, + char_u *word, + int maxcount, /* maximum nr of suggestions */ + int need_cap, /* 'spellcapcheck' matched */ + int interactive) +{ + suginfo_T sug; + int i; + suggest_T *stp; + char_u *wcopy; + + spell_find_suggest(word, 0, &sug, maxcount, FALSE, need_cap, interactive); + + /* Make room in "gap". */ + ga_init2(gap, sizeof(char_u *), sug.su_ga.ga_len + 1); + if (ga_grow(gap, sug.su_ga.ga_len) == OK) + { + for (i = 0; i < sug.su_ga.ga_len; ++i) + { + stp = &SUG(sug.su_ga, i); + + /* The suggested word may replace only part of "word", add the not + * replaced part. */ + wcopy = alloc(stp->st_wordlen + + (unsigned)STRLEN(sug.su_badptr + stp->st_orglen) + 1); + if (wcopy == NULL) + break; + STRCPY(wcopy, stp->st_word); + STRCPY(wcopy + stp->st_wordlen, sug.su_badptr + stp->st_orglen); + ((char_u **)gap->ga_data)[gap->ga_len++] = wcopy; + } + } + + spell_find_cleanup(&sug); +} + +/* + * Find spell suggestions for the word at the start of "badptr". + * Return the suggestions in "su->su_ga". + * The maximum number of suggestions is "maxcount". + * Note: does use info for the current window. + * This is based on the mechanisms of Aspell, but completely reimplemented. + */ + static void +spell_find_suggest( + char_u *badptr, + int badlen, /* length of bad word or 0 if unknown */ + suginfo_T *su, + int maxcount, + int banbadword, /* don't include badword in suggestions */ + int need_cap, /* word should start with capital */ + int interactive) +{ + hlf_T attr = HLF_COUNT; + char_u buf[MAXPATHL]; + char_u *p; + int do_combine = FALSE; + char_u *sps_copy; +#ifdef FEAT_EVAL + static int expr_busy = FALSE; +#endif + int c; + int i; + langp_T *lp; + + /* + * Set the info in "*su". + */ + vim_memset(su, 0, sizeof(suginfo_T)); + ga_init2(&su->su_ga, (int)sizeof(suggest_T), 10); + ga_init2(&su->su_sga, (int)sizeof(suggest_T), 10); + if (*badptr == NUL) + return; + hash_init(&su->su_banned); + + su->su_badptr = badptr; + if (badlen != 0) + su->su_badlen = badlen; + else + su->su_badlen = spell_check(curwin, su->su_badptr, &attr, NULL, FALSE); + su->su_maxcount = maxcount; + su->su_maxscore = SCORE_MAXINIT; + + if (su->su_badlen >= MAXWLEN) + su->su_badlen = MAXWLEN - 1; /* just in case */ + vim_strncpy(su->su_badword, su->su_badptr, su->su_badlen); + (void)spell_casefold(su->su_badptr, su->su_badlen, + su->su_fbadword, MAXWLEN); + /* TODO: make this work if the case-folded text is longer than the original + * text. Currently an illegal byte causes wrong pointer computations. */ + su->su_fbadword[su->su_badlen] = NUL; + + /* get caps flags for bad word */ + su->su_badflags = badword_captype(su->su_badptr, + su->su_badptr + su->su_badlen); + if (need_cap) + su->su_badflags |= WF_ONECAP; + + /* Find the default language for sound folding. We simply use the first + * one in 'spelllang' that supports sound folding. That's good for when + * using multiple files for one language, it's not that bad when mixing + * languages (e.g., "pl,en"). */ + for (i = 0; i < curbuf->b_s.b_langp.ga_len; ++i) + { + lp = LANGP_ENTRY(curbuf->b_s.b_langp, i); + if (lp->lp_sallang != NULL) + { + su->su_sallang = lp->lp_sallang; + break; + } + } + + /* Soundfold the bad word with the default sound folding, so that we don't + * have to do this many times. */ + if (su->su_sallang != NULL) + spell_soundfold(su->su_sallang, su->su_fbadword, TRUE, + su->su_sal_badword); + + /* If the word is not capitalised and spell_check() doesn't consider the + * word to be bad then it might need to be capitalised. Add a suggestion + * for that. */ + c = PTR2CHAR(su->su_badptr); + if (!SPELL_ISUPPER(c) && attr == HLF_COUNT) + { + make_case_word(su->su_badword, buf, WF_ONECAP); + add_suggestion(su, &su->su_ga, buf, su->su_badlen, SCORE_ICASE, + 0, TRUE, su->su_sallang, FALSE); + } + + /* Ban the bad word itself. It may appear in another region. */ + if (banbadword) + add_banned(su, su->su_badword); + + /* Make a copy of 'spellsuggest', because the expression may change it. */ + sps_copy = vim_strsave(p_sps); + if (sps_copy == NULL) + return; + + /* Loop over the items in 'spellsuggest'. */ + for (p = sps_copy; *p != NUL; ) + { + copy_option_part(&p, buf, MAXPATHL, ","); + + if (STRNCMP(buf, "expr:", 5) == 0) + { +#ifdef FEAT_EVAL + /* Evaluate an expression. Skip this when called recursively, + * when using spellsuggest() in the expression. */ + if (!expr_busy) + { + expr_busy = TRUE; + spell_suggest_expr(su, buf + 5); + expr_busy = FALSE; + } +#endif + } + else if (STRNCMP(buf, "file:", 5) == 0) + /* Use list of suggestions in a file. */ + spell_suggest_file(su, buf + 5); + else + { + /* Use internal method. */ + spell_suggest_intern(su, interactive); + if (sps_flags & SPS_DOUBLE) + do_combine = TRUE; + } + } + + vim_free(sps_copy); + + if (do_combine) + /* Combine the two list of suggestions. This must be done last, + * because sorting changes the order again. */ + score_combine(su); +} + +#ifdef FEAT_EVAL +/* + * Find suggestions by evaluating expression "expr". + */ + static void +spell_suggest_expr(suginfo_T *su, char_u *expr) +{ + list_T *list; + listitem_T *li; + int score; + char_u *p; + + /* The work is split up in a few parts to avoid having to export + * suginfo_T. + * First evaluate the expression and get the resulting list. */ + list = eval_spell_expr(su->su_badword, expr); + if (list != NULL) + { + /* Loop over the items in the list. */ + for (li = list->lv_first; li != NULL; li = li->li_next) + if (li->li_tv.v_type == VAR_LIST) + { + /* Get the word and the score from the items. */ + score = get_spellword(li->li_tv.vval.v_list, &p); + if (score >= 0 && score <= su->su_maxscore) + add_suggestion(su, &su->su_ga, p, su->su_badlen, + score, 0, TRUE, su->su_sallang, FALSE); + } + list_unref(list); + } + + /* Remove bogus suggestions, sort and truncate at "maxcount". */ + check_suggestions(su, &su->su_ga); + (void)cleanup_suggestions(&su->su_ga, su->su_maxscore, su->su_maxcount); +} +#endif + +/* + * Find suggestions in file "fname". Used for "file:" in 'spellsuggest'. + */ + static void +spell_suggest_file(suginfo_T *su, char_u *fname) +{ + FILE *fd; + char_u line[MAXWLEN * 2]; + char_u *p; + int len; + char_u cword[MAXWLEN]; + + /* Open the file. */ + fd = mch_fopen((char *)fname, "r"); + if (fd == NULL) + { + semsg(_(e_notopen), fname); + return; + } + + /* Read it line by line. */ + while (!vim_fgets(line, MAXWLEN * 2, fd) && !got_int) + { + line_breakcheck(); + + p = vim_strchr(line, '/'); + if (p == NULL) + continue; /* No Tab found, just skip the line. */ + *p++ = NUL; + if (STRICMP(su->su_badword, line) == 0) + { + /* Match! Isolate the good word, until CR or NL. */ + for (len = 0; p[len] >= ' '; ++len) + ; + p[len] = NUL; + + /* If the suggestion doesn't have specific case duplicate the case + * of the bad word. */ + if (captype(p, NULL) == 0) + { + make_case_word(p, cword, su->su_badflags); + p = cword; + } + + add_suggestion(su, &su->su_ga, p, su->su_badlen, + SCORE_FILE, 0, TRUE, su->su_sallang, FALSE); + } + } + + fclose(fd); + + /* Remove bogus suggestions, sort and truncate at "maxcount". */ + check_suggestions(su, &su->su_ga); + (void)cleanup_suggestions(&su->su_ga, su->su_maxscore, su->su_maxcount); +} + +/* + * Find suggestions for the internal method indicated by "sps_flags". + */ + static void +spell_suggest_intern(suginfo_T *su, int interactive) +{ + /* + * Load the .sug file(s) that are available and not done yet. + */ + suggest_load_files(); + + /* + * 1. Try special cases, such as repeating a word: "the the" -> "the". + * + * Set a maximum score to limit the combination of operations that is + * tried. + */ + suggest_try_special(su); + + /* + * 2. Try inserting/deleting/swapping/changing a letter, use REP entries + * from the .aff file and inserting a space (split the word). + */ + suggest_try_change(su); + + /* For the resulting top-scorers compute the sound-a-like score. */ + if (sps_flags & SPS_DOUBLE) + score_comp_sal(su); + + /* + * 3. Try finding sound-a-like words. + */ + if ((sps_flags & SPS_FAST) == 0) + { + if (sps_flags & SPS_BEST) + /* Adjust the word score for the suggestions found so far for how + * they sounds like. */ + rescore_suggestions(su); + + /* + * While going through the soundfold tree "su_maxscore" is the score + * for the soundfold word, limits the changes that are being tried, + * and "su_sfmaxscore" the rescored score, which is set by + * cleanup_suggestions(). + * First find words with a small edit distance, because this is much + * faster and often already finds the top-N suggestions. If we didn't + * find many suggestions try again with a higher edit distance. + * "sl_sounddone" is used to avoid doing the same word twice. + */ + suggest_try_soundalike_prep(); + su->su_maxscore = SCORE_SFMAX1; + su->su_sfmaxscore = SCORE_MAXINIT * 3; + suggest_try_soundalike(su); + if (su->su_ga.ga_len < SUG_CLEAN_COUNT(su)) + { + /* We didn't find enough matches, try again, allowing more + * changes to the soundfold word. */ + su->su_maxscore = SCORE_SFMAX2; + suggest_try_soundalike(su); + if (su->su_ga.ga_len < SUG_CLEAN_COUNT(su)) + { + /* Still didn't find enough matches, try again, allowing even + * more changes to the soundfold word. */ + su->su_maxscore = SCORE_SFMAX3; + suggest_try_soundalike(su); + } + } + su->su_maxscore = su->su_sfmaxscore; + suggest_try_soundalike_finish(); + } + + /* When CTRL-C was hit while searching do show the results. Only clear + * got_int when using a command, not for spellsuggest(). */ + ui_breakcheck(); + if (interactive && got_int) + { + (void)vgetc(); + got_int = FALSE; + } + + if ((sps_flags & SPS_DOUBLE) == 0 && su->su_ga.ga_len != 0) + { + if (sps_flags & SPS_BEST) + /* Adjust the word score for how it sounds like. */ + rescore_suggestions(su); + + /* Remove bogus suggestions, sort and truncate at "maxcount". */ + check_suggestions(su, &su->su_ga); + (void)cleanup_suggestions(&su->su_ga, su->su_maxscore, su->su_maxcount); + } +} + +/* + * Free the info put in "*su" by spell_find_suggest(). + */ + static void +spell_find_cleanup(suginfo_T *su) +{ + int i; + + /* Free the suggestions. */ + for (i = 0; i < su->su_ga.ga_len; ++i) + vim_free(SUG(su->su_ga, i).st_word); + ga_clear(&su->su_ga); + for (i = 0; i < su->su_sga.ga_len; ++i) + vim_free(SUG(su->su_sga, i).st_word); + ga_clear(&su->su_sga); + + /* Free the banned words. */ + hash_clear_all(&su->su_banned, 0); +} + +/* + * Make a copy of "word", with the first letter upper or lower cased, to + * "wcopy[MAXWLEN]". "word" must not be empty. + * The result is NUL terminated. + */ + void +onecap_copy( + char_u *word, + char_u *wcopy, + int upper) /* TRUE: first letter made upper case */ +{ + char_u *p; + int c; + int l; + + p = word; + if (has_mbyte) + c = mb_cptr2char_adv(&p); + else + c = *p++; + if (upper) + c = SPELL_TOUPPER(c); + else + c = SPELL_TOFOLD(c); + if (has_mbyte) + l = mb_char2bytes(c, wcopy); + else + { + l = 1; + wcopy[0] = c; + } + vim_strncpy(wcopy + l, p, MAXWLEN - l - 1); +} + +/* + * Make a copy of "word" with all the letters upper cased into + * "wcopy[MAXWLEN]". The result is NUL terminated. + */ + static void +allcap_copy(char_u *word, char_u *wcopy) +{ + char_u *s; + char_u *d; + int c; + + d = wcopy; + for (s = word; *s != NUL; ) + { + if (has_mbyte) + c = mb_cptr2char_adv(&s); + else + c = *s++; + + /* We only change 0xdf to SS when we are certain latin1 is used. It + * would cause weird errors in other 8-bit encodings. */ + if (enc_latin1like && c == 0xdf) + { + c = 'S'; + if (d - wcopy >= MAXWLEN - 1) + break; + *d++ = c; + } + else + c = SPELL_TOUPPER(c); + + if (has_mbyte) + { + if (d - wcopy >= MAXWLEN - MB_MAXBYTES) + break; + d += mb_char2bytes(c, d); + } + else + { + if (d - wcopy >= MAXWLEN - 1) + break; + *d++ = c; + } + } + *d = NUL; +} + +/* + * Try finding suggestions by recognizing specific situations. + */ + static void +suggest_try_special(suginfo_T *su) +{ + char_u *p; + size_t len; + int c; + char_u word[MAXWLEN]; + + /* + * Recognize a word that is repeated: "the the". + */ + p = skiptowhite(su->su_fbadword); + len = p - su->su_fbadword; + p = skipwhite(p); + if (STRLEN(p) == len && STRNCMP(su->su_fbadword, p, len) == 0) + { + /* Include badflags: if the badword is onecap or allcap + * use that for the goodword too: "The the" -> "The". */ + c = su->su_fbadword[len]; + su->su_fbadword[len] = NUL; + make_case_word(su->su_fbadword, word, su->su_badflags); + su->su_fbadword[len] = c; + + /* Give a soundalike score of 0, compute the score as if deleting one + * character. */ + add_suggestion(su, &su->su_ga, word, su->su_badlen, + RESCORE(SCORE_REP, 0), 0, TRUE, su->su_sallang, FALSE); + } +} + +/* + * Change the 0 to 1 to measure how much time is spent in each state. + * Output is dumped in "suggestprof". + */ +#if 0 +# define SUGGEST_PROFILE +proftime_T current; +proftime_T total; +proftime_T times[STATE_FINAL + 1]; +long counts[STATE_FINAL + 1]; + + static void +prof_init(void) +{ + for (int i = 0; i <= STATE_FINAL; ++i) + { + profile_zero(×[i]); + counts[i] = 0; + } + profile_start(¤t); + profile_start(&total); +} + +/* call before changing state */ + static void +prof_store(state_T state) +{ + profile_end(¤t); + profile_add(×[state], ¤t); + ++counts[state]; + profile_start(¤t); +} +# define PROF_STORE(state) prof_store(state); + + static void +prof_report(char *name) +{ + FILE *fd = fopen("suggestprof", "a"); + + profile_end(&total); + fprintf(fd, "-----------------------\n"); + fprintf(fd, "%s: %s\n", name, profile_msg(&total)); + for (int i = 0; i <= STATE_FINAL; ++i) + fprintf(fd, "%d: %s (%ld)\n", i, profile_msg(×[i]), counts[i]); + fclose(fd); +} +#else +# define PROF_STORE(state) +#endif + +/* + * Try finding suggestions by adding/removing/swapping letters. + */ + static void +suggest_try_change(suginfo_T *su) +{ + char_u fword[MAXWLEN]; /* copy of the bad word, case-folded */ + int n; + char_u *p; + int lpi; + langp_T *lp; + + /* We make a copy of the case-folded bad word, so that we can modify it + * to find matches (esp. REP items). Append some more text, changing + * chars after the bad word may help. */ + STRCPY(fword, su->su_fbadword); + n = (int)STRLEN(fword); + p = su->su_badptr + su->su_badlen; + (void)spell_casefold(p, (int)STRLEN(p), fword + n, MAXWLEN - n); + + for (lpi = 0; lpi < curwin->w_s->b_langp.ga_len; ++lpi) + { + lp = LANGP_ENTRY(curwin->w_s->b_langp, lpi); + + /* If reloading a spell file fails it's still in the list but + * everything has been cleared. */ + if (lp->lp_slang->sl_fbyts == NULL) + continue; + + /* Try it for this language. Will add possible suggestions. */ +#ifdef SUGGEST_PROFILE + prof_init(); +#endif + suggest_trie_walk(su, lp, fword, FALSE); +#ifdef SUGGEST_PROFILE + prof_report("try_change"); +#endif + } +} + +/* Check the maximum score, if we go over it we won't try this change. */ +#define TRY_DEEPER(su, stack, depth, add) \ + (stack[depth].ts_score + (add) < su->su_maxscore) + +/* + * Try finding suggestions by adding/removing/swapping letters. + * + * This uses a state machine. At each node in the tree we try various + * operations. When trying if an operation works "depth" is increased and the + * stack[] is used to store info. This allows combinations, thus insert one + * character, replace one and delete another. The number of changes is + * limited by su->su_maxscore. + * + * After implementing this I noticed an article by Kemal Oflazer that + * describes something similar: "Error-tolerant Finite State Recognition with + * Applications to Morphological Analysis and Spelling Correction" (1996). + * The implementation in the article is simplified and requires a stack of + * unknown depth. The implementation here only needs a stack depth equal to + * the length of the word. + * + * This is also used for the sound-folded word, "soundfold" is TRUE then. + * The mechanism is the same, but we find a match with a sound-folded word + * that comes from one or more original words. Each of these words may be + * added, this is done by add_sound_suggest(). + * Don't use: + * the prefix tree or the keep-case tree + * "su->su_badlen" + * anything to do with upper and lower case + * anything to do with word or non-word characters ("spell_iswordp()") + * banned words + * word flags (rare, region, compounding) + * word splitting for now + * "similar_chars()" + * use "slang->sl_repsal" instead of "lp->lp_replang->sl_rep" + */ + static void +suggest_trie_walk( + suginfo_T *su, + langp_T *lp, + char_u *fword, + int soundfold) +{ + char_u tword[MAXWLEN]; /* good word collected so far */ + trystate_T stack[MAXWLEN]; + char_u preword[MAXWLEN * 3]; /* word found with proper case; + * concatenation of prefix compound + * words and split word. NUL terminated + * when going deeper but not when coming + * back. */ + char_u compflags[MAXWLEN]; /* compound flags, one for each word */ + trystate_T *sp; + int newscore; + int score; + char_u *byts, *fbyts, *pbyts; + idx_T *idxs, *fidxs, *pidxs; + int depth; + int c, c2, c3; + int n = 0; + int flags; + garray_T *gap; + idx_T arridx; + int len; + char_u *p; + fromto_T *ftp; + int fl = 0, tl; + int repextra = 0; /* extra bytes in fword[] from REP item */ + slang_T *slang = lp->lp_slang; + int fword_ends; + int goodword_ends; +#ifdef DEBUG_TRIEWALK + /* Stores the name of the change made at each level. */ + char_u changename[MAXWLEN][80]; +#endif + int breakcheckcount = 1000; + int compound_ok; + + /* + * Go through the whole case-fold tree, try changes at each node. + * "tword[]" contains the word collected from nodes in the tree. + * "fword[]" the word we are trying to match with (initially the bad + * word). + */ + depth = 0; + sp = &stack[0]; + vim_memset(sp, 0, sizeof(trystate_T)); + sp->ts_curi = 1; + + if (soundfold) + { + /* Going through the soundfold tree. */ + byts = fbyts = slang->sl_sbyts; + idxs = fidxs = slang->sl_sidxs; + pbyts = NULL; + pidxs = NULL; + sp->ts_prefixdepth = PFD_NOPREFIX; + sp->ts_state = STATE_START; + } + else + { + /* + * When there are postponed prefixes we need to use these first. At + * the end of the prefix we continue in the case-fold tree. + */ + fbyts = slang->sl_fbyts; + fidxs = slang->sl_fidxs; + pbyts = slang->sl_pbyts; + pidxs = slang->sl_pidxs; + if (pbyts != NULL) + { + byts = pbyts; + idxs = pidxs; + sp->ts_prefixdepth = PFD_PREFIXTREE; + sp->ts_state = STATE_NOPREFIX; /* try without prefix first */ + } + else + { + byts = fbyts; + idxs = fidxs; + sp->ts_prefixdepth = PFD_NOPREFIX; + sp->ts_state = STATE_START; + } + } + + /* + * Loop to find all suggestions. At each round we either: + * - For the current state try one operation, advance "ts_curi", + * increase "depth". + * - When a state is done go to the next, set "ts_state". + * - When all states are tried decrease "depth". + */ + while (depth >= 0 && !got_int) + { + sp = &stack[depth]; + switch (sp->ts_state) + { + case STATE_START: + case STATE_NOPREFIX: + /* + * Start of node: Deal with NUL bytes, which means + * tword[] may end here. + */ + arridx = sp->ts_arridx; /* current node in the tree */ + len = byts[arridx]; /* bytes in this node */ + arridx += sp->ts_curi; /* index of current byte */ + + if (sp->ts_prefixdepth == PFD_PREFIXTREE) + { + /* Skip over the NUL bytes, we use them later. */ + for (n = 0; n < len && byts[arridx + n] == 0; ++n) + ; + sp->ts_curi += n; + + /* Always past NUL bytes now. */ + n = (int)sp->ts_state; + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_ENDNUL; + sp->ts_save_badflags = su->su_badflags; + + /* At end of a prefix or at start of prefixtree: check for + * following word. */ + if (byts[arridx] == 0 || n == (int)STATE_NOPREFIX) + { + /* Set su->su_badflags to the caps type at this position. + * Use the caps type until here for the prefix itself. */ + if (has_mbyte) + n = nofold_len(fword, sp->ts_fidx, su->su_badptr); + else + n = sp->ts_fidx; + flags = badword_captype(su->su_badptr, su->su_badptr + n); + su->su_badflags = badword_captype(su->su_badptr + n, + su->su_badptr + su->su_badlen); +#ifdef DEBUG_TRIEWALK + sprintf(changename[depth], "prefix"); +#endif + go_deeper(stack, depth, 0); + ++depth; + sp = &stack[depth]; + sp->ts_prefixdepth = depth - 1; + byts = fbyts; + idxs = fidxs; + sp->ts_arridx = 0; + + /* Move the prefix to preword[] with the right case + * and make find_keepcap_word() works. */ + tword[sp->ts_twordlen] = NUL; + make_case_word(tword + sp->ts_splitoff, + preword + sp->ts_prewordlen, flags); + sp->ts_prewordlen = (char_u)STRLEN(preword); + sp->ts_splitoff = sp->ts_twordlen; + } + break; + } + + if (sp->ts_curi > len || byts[arridx] != 0) + { + /* Past bytes in node and/or past NUL bytes. */ + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_ENDNUL; + sp->ts_save_badflags = su->su_badflags; + break; + } + + /* + * End of word in tree. + */ + ++sp->ts_curi; /* eat one NUL byte */ + + flags = (int)idxs[arridx]; + + /* Skip words with the NOSUGGEST flag. */ + if (flags & WF_NOSUGGEST) + break; + + fword_ends = (fword[sp->ts_fidx] == NUL + || (soundfold + ? VIM_ISWHITE(fword[sp->ts_fidx]) + : !spell_iswordp(fword + sp->ts_fidx, curwin))); + tword[sp->ts_twordlen] = NUL; + + if (sp->ts_prefixdepth <= PFD_NOTSPECIAL + && (sp->ts_flags & TSF_PREFIXOK) == 0) + { + /* There was a prefix before the word. Check that the prefix + * can be used with this word. */ + /* Count the length of the NULs in the prefix. If there are + * none this must be the first try without a prefix. */ + n = stack[sp->ts_prefixdepth].ts_arridx; + len = pbyts[n++]; + for (c = 0; c < len && pbyts[n + c] == 0; ++c) + ; + if (c > 0) + { + c = valid_word_prefix(c, n, flags, + tword + sp->ts_splitoff, slang, FALSE); + if (c == 0) + break; + + /* Use the WF_RARE flag for a rare prefix. */ + if (c & WF_RAREPFX) + flags |= WF_RARE; + + /* Tricky: when checking for both prefix and compounding + * we run into the prefix flag first. + * Remember that it's OK, so that we accept the prefix + * when arriving at a compound flag. */ + sp->ts_flags |= TSF_PREFIXOK; + } + } + + /* Check NEEDCOMPOUND: can't use word without compounding. Do try + * appending another compound word below. */ + if (sp->ts_complen == sp->ts_compsplit && fword_ends + && (flags & WF_NEEDCOMP)) + goodword_ends = FALSE; + else + goodword_ends = TRUE; + + p = NULL; + compound_ok = TRUE; + if (sp->ts_complen > sp->ts_compsplit) + { + if (slang->sl_nobreak) + { + /* There was a word before this word. When there was no + * change in this word (it was correct) add the first word + * as a suggestion. If this word was corrected too, we + * need to check if a correct word follows. */ + if (sp->ts_fidx - sp->ts_splitfidx + == sp->ts_twordlen - sp->ts_splitoff + && STRNCMP(fword + sp->ts_splitfidx, + tword + sp->ts_splitoff, + sp->ts_fidx - sp->ts_splitfidx) == 0) + { + preword[sp->ts_prewordlen] = NUL; + newscore = score_wordcount_adj(slang, sp->ts_score, + preword + sp->ts_prewordlen, + sp->ts_prewordlen > 0); + /* Add the suggestion if the score isn't too bad. */ + if (newscore <= su->su_maxscore) + add_suggestion(su, &su->su_ga, preword, + sp->ts_splitfidx - repextra, + newscore, 0, FALSE, + lp->lp_sallang, FALSE); + break; + } + } + else + { + /* There was a compound word before this word. If this + * word does not support compounding then give up + * (splitting is tried for the word without compound + * flag). */ + if (((unsigned)flags >> 24) == 0 + || sp->ts_twordlen - sp->ts_splitoff + < slang->sl_compminlen) + break; + /* For multi-byte chars check character length against + * COMPOUNDMIN. */ + if (has_mbyte + && slang->sl_compminlen > 0 + && mb_charlen(tword + sp->ts_splitoff) + < slang->sl_compminlen) + break; + + compflags[sp->ts_complen] = ((unsigned)flags >> 24); + compflags[sp->ts_complen + 1] = NUL; + vim_strncpy(preword + sp->ts_prewordlen, + tword + sp->ts_splitoff, + sp->ts_twordlen - sp->ts_splitoff); + + /* Verify CHECKCOMPOUNDPATTERN rules. */ + if (match_checkcompoundpattern(preword, sp->ts_prewordlen, + &slang->sl_comppat)) + compound_ok = FALSE; + + if (compound_ok) + { + p = preword; + while (*skiptowhite(p) != NUL) + p = skipwhite(skiptowhite(p)); + if (fword_ends && !can_compound(slang, p, + compflags + sp->ts_compsplit)) + /* Compound is not allowed. But it may still be + * possible if we add another (short) word. */ + compound_ok = FALSE; + } + + /* Get pointer to last char of previous word. */ + p = preword + sp->ts_prewordlen; + MB_PTR_BACK(preword, p); + } + } + + /* + * Form the word with proper case in preword. + * If there is a word from a previous split, append. + * For the soundfold tree don't change the case, simply append. + */ + if (soundfold) + STRCPY(preword + sp->ts_prewordlen, tword + sp->ts_splitoff); + else if (flags & WF_KEEPCAP) + /* Must find the word in the keep-case tree. */ + find_keepcap_word(slang, tword + sp->ts_splitoff, + preword + sp->ts_prewordlen); + else + { + /* Include badflags: If the badword is onecap or allcap + * use that for the goodword too. But if the badword is + * allcap and it's only one char long use onecap. */ + c = su->su_badflags; + if ((c & WF_ALLCAP) + && su->su_badlen == (*mb_ptr2len)(su->su_badptr)) + c = WF_ONECAP; + c |= flags; + + /* When appending a compound word after a word character don't + * use Onecap. */ + if (p != NULL && spell_iswordp_nmw(p, curwin)) + c &= ~WF_ONECAP; + make_case_word(tword + sp->ts_splitoff, + preword + sp->ts_prewordlen, c); + } + + if (!soundfold) + { + /* Don't use a banned word. It may appear again as a good + * word, thus remember it. */ + if (flags & WF_BANNED) + { + add_banned(su, preword + sp->ts_prewordlen); + break; + } + if ((sp->ts_complen == sp->ts_compsplit + && WAS_BANNED(su, preword + sp->ts_prewordlen)) + || WAS_BANNED(su, preword)) + { + if (slang->sl_compprog == NULL) + break; + /* the word so far was banned but we may try compounding */ + goodword_ends = FALSE; + } + } + + newscore = 0; + if (!soundfold) /* soundfold words don't have flags */ + { + if ((flags & WF_REGION) + && (((unsigned)flags >> 16) & lp->lp_region) == 0) + newscore += SCORE_REGION; + if (flags & WF_RARE) + newscore += SCORE_RARE; + + if (!spell_valid_case(su->su_badflags, + captype(preword + sp->ts_prewordlen, NULL))) + newscore += SCORE_ICASE; + } + + /* TODO: how about splitting in the soundfold tree? */ + if (fword_ends + && goodword_ends + && sp->ts_fidx >= sp->ts_fidxtry + && compound_ok) + { + /* The badword also ends: add suggestions. */ +#ifdef DEBUG_TRIEWALK + if (soundfold && STRCMP(preword, "smwrd") == 0) + { + int j; + + /* print the stack of changes that brought us here */ + smsg("------ %s -------", fword); + for (j = 0; j < depth; ++j) + smsg("%s", changename[j]); + } +#endif + if (soundfold) + { + /* For soundfolded words we need to find the original + * words, the edit distance and then add them. */ + add_sound_suggest(su, preword, sp->ts_score, lp); + } + else if (sp->ts_fidx > 0) + { + /* Give a penalty when changing non-word char to word + * char, e.g., "thes," -> "these". */ + p = fword + sp->ts_fidx; + MB_PTR_BACK(fword, p); + if (!spell_iswordp(p, curwin)) + { + p = preword + STRLEN(preword); + MB_PTR_BACK(preword, p); + if (spell_iswordp(p, curwin)) + newscore += SCORE_NONWORD; + } + + /* Give a bonus to words seen before. */ + score = score_wordcount_adj(slang, + sp->ts_score + newscore, + preword + sp->ts_prewordlen, + sp->ts_prewordlen > 0); + + /* Add the suggestion if the score isn't too bad. */ + if (score <= su->su_maxscore) + { + add_suggestion(su, &su->su_ga, preword, + sp->ts_fidx - repextra, + score, 0, FALSE, lp->lp_sallang, FALSE); + + if (su->su_badflags & WF_MIXCAP) + { + /* We really don't know if the word should be + * upper or lower case, add both. */ + c = captype(preword, NULL); + if (c == 0 || c == WF_ALLCAP) + { + make_case_word(tword + sp->ts_splitoff, + preword + sp->ts_prewordlen, + c == 0 ? WF_ALLCAP : 0); + + add_suggestion(su, &su->su_ga, preword, + sp->ts_fidx - repextra, + score + SCORE_ICASE, 0, FALSE, + lp->lp_sallang, FALSE); + } + } + } + } + } + + /* + * Try word split and/or compounding. + */ + if ((sp->ts_fidx >= sp->ts_fidxtry || fword_ends) + /* Don't split halfway a character. */ + && (!has_mbyte || sp->ts_tcharlen == 0)) + { + int try_compound; + int try_split; + + /* If past the end of the bad word don't try a split. + * Otherwise try changing the next word. E.g., find + * suggestions for "the the" where the second "the" is + * different. It's done like a split. + * TODO: word split for soundfold words */ + try_split = (sp->ts_fidx - repextra < su->su_badlen) + && !soundfold; + + /* Get here in several situations: + * 1. The word in the tree ends: + * If the word allows compounding try that. Otherwise try + * a split by inserting a space. For both check that a + * valid words starts at fword[sp->ts_fidx]. + * For NOBREAK do like compounding to be able to check if + * the next word is valid. + * 2. The badword does end, but it was due to a change (e.g., + * a swap). No need to split, but do check that the + * following word is valid. + * 3. The badword and the word in the tree end. It may still + * be possible to compound another (short) word. + */ + try_compound = FALSE; + if (!soundfold + && !slang->sl_nocompoundsugs + && slang->sl_compprog != NULL + && ((unsigned)flags >> 24) != 0 + && sp->ts_twordlen - sp->ts_splitoff + >= slang->sl_compminlen + && (!has_mbyte + || slang->sl_compminlen == 0 + || mb_charlen(tword + sp->ts_splitoff) + >= slang->sl_compminlen) + && (slang->sl_compsylmax < MAXWLEN + || sp->ts_complen + 1 - sp->ts_compsplit + < slang->sl_compmax) + && (can_be_compound(sp, slang, + compflags, ((unsigned)flags >> 24)))) + + { + try_compound = TRUE; + compflags[sp->ts_complen] = ((unsigned)flags >> 24); + compflags[sp->ts_complen + 1] = NUL; + } + + /* For NOBREAK we never try splitting, it won't make any word + * valid. */ + if (slang->sl_nobreak && !slang->sl_nocompoundsugs) + try_compound = TRUE; + + /* If we could add a compound word, and it's also possible to + * split at this point, do the split first and set + * TSF_DIDSPLIT to avoid doing it again. */ + else if (!fword_ends + && try_compound + && (sp->ts_flags & TSF_DIDSPLIT) == 0) + { + try_compound = FALSE; + sp->ts_flags |= TSF_DIDSPLIT; + --sp->ts_curi; /* do the same NUL again */ + compflags[sp->ts_complen] = NUL; + } + else + sp->ts_flags &= ~TSF_DIDSPLIT; + + if (try_split || try_compound) + { + if (!try_compound && (!fword_ends || !goodword_ends)) + { + /* If we're going to split need to check that the + * words so far are valid for compounding. If there + * is only one word it must not have the NEEDCOMPOUND + * flag. */ + if (sp->ts_complen == sp->ts_compsplit + && (flags & WF_NEEDCOMP)) + break; + p = preword; + while (*skiptowhite(p) != NUL) + p = skipwhite(skiptowhite(p)); + if (sp->ts_complen > sp->ts_compsplit + && !can_compound(slang, p, + compflags + sp->ts_compsplit)) + break; + + if (slang->sl_nosplitsugs) + newscore += SCORE_SPLIT_NO; + else + newscore += SCORE_SPLIT; + + /* Give a bonus to words seen before. */ + newscore = score_wordcount_adj(slang, newscore, + preword + sp->ts_prewordlen, TRUE); + } + + if (TRY_DEEPER(su, stack, depth, newscore)) + { + go_deeper(stack, depth, newscore); +#ifdef DEBUG_TRIEWALK + if (!try_compound && !fword_ends) + sprintf(changename[depth], "%.*s-%s: split", + sp->ts_twordlen, tword, fword + sp->ts_fidx); + else + sprintf(changename[depth], "%.*s-%s: compound", + sp->ts_twordlen, tword, fword + sp->ts_fidx); +#endif + /* Save things to be restored at STATE_SPLITUNDO. */ + sp->ts_save_badflags = su->su_badflags; + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_SPLITUNDO; + + ++depth; + sp = &stack[depth]; + + /* Append a space to preword when splitting. */ + if (!try_compound && !fword_ends) + STRCAT(preword, " "); + sp->ts_prewordlen = (char_u)STRLEN(preword); + sp->ts_splitoff = sp->ts_twordlen; + sp->ts_splitfidx = sp->ts_fidx; + + /* If the badword has a non-word character at this + * position skip it. That means replacing the + * non-word character with a space. Always skip a + * character when the word ends. But only when the + * good word can end. */ + if (((!try_compound && !spell_iswordp_nmw(fword + + sp->ts_fidx, + curwin)) + || fword_ends) + && fword[sp->ts_fidx] != NUL + && goodword_ends) + { + int l; + + l = MB_PTR2LEN(fword + sp->ts_fidx); + if (fword_ends) + { + /* Copy the skipped character to preword. */ + mch_memmove(preword + sp->ts_prewordlen, + fword + sp->ts_fidx, l); + sp->ts_prewordlen += l; + preword[sp->ts_prewordlen] = NUL; + } + else + sp->ts_score -= SCORE_SPLIT - SCORE_SUBST; + sp->ts_fidx += l; + } + + /* When compounding include compound flag in + * compflags[] (already set above). When splitting we + * may start compounding over again. */ + if (try_compound) + ++sp->ts_complen; + else + sp->ts_compsplit = sp->ts_complen; + sp->ts_prefixdepth = PFD_NOPREFIX; + + /* set su->su_badflags to the caps type at this + * position */ + if (has_mbyte) + n = nofold_len(fword, sp->ts_fidx, su->su_badptr); + else + n = sp->ts_fidx; + su->su_badflags = badword_captype(su->su_badptr + n, + su->su_badptr + su->su_badlen); + + /* Restart at top of the tree. */ + sp->ts_arridx = 0; + + /* If there are postponed prefixes, try these too. */ + if (pbyts != NULL) + { + byts = pbyts; + idxs = pidxs; + sp->ts_prefixdepth = PFD_PREFIXTREE; + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_NOPREFIX; + } + } + } + } + break; + + case STATE_SPLITUNDO: + /* Undo the changes done for word split or compound word. */ + su->su_badflags = sp->ts_save_badflags; + + /* Continue looking for NUL bytes. */ + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_START; + + /* In case we went into the prefix tree. */ + byts = fbyts; + idxs = fidxs; + break; + + case STATE_ENDNUL: + /* Past the NUL bytes in the node. */ + su->su_badflags = sp->ts_save_badflags; + if (fword[sp->ts_fidx] == NUL && sp->ts_tcharlen == 0) + { + /* The badword ends, can't use STATE_PLAIN. */ + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_DEL; + break; + } + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_PLAIN; + /* FALLTHROUGH */ + + case STATE_PLAIN: + /* + * Go over all possible bytes at this node, add each to tword[] + * and use child node. "ts_curi" is the index. + */ + arridx = sp->ts_arridx; + if (sp->ts_curi > byts[arridx]) + { + /* Done all bytes at this node, do next state. When still at + * already changed bytes skip the other tricks. */ + PROF_STORE(sp->ts_state) + if (sp->ts_fidx >= sp->ts_fidxtry) + sp->ts_state = STATE_DEL; + else + sp->ts_state = STATE_FINAL; + } + else + { + arridx += sp->ts_curi++; + c = byts[arridx]; + + /* Normal byte, go one level deeper. If it's not equal to the + * byte in the bad word adjust the score. But don't even try + * when the byte was already changed. And don't try when we + * just deleted this byte, accepting it is always cheaper than + * delete + substitute. */ + if (c == fword[sp->ts_fidx] + || (sp->ts_tcharlen > 0 && sp->ts_isdiff != DIFF_NONE)) + newscore = 0; + else + newscore = SCORE_SUBST; + if ((newscore == 0 + || (sp->ts_fidx >= sp->ts_fidxtry + && ((sp->ts_flags & TSF_DIDDEL) == 0 + || c != fword[sp->ts_delidx]))) + && TRY_DEEPER(su, stack, depth, newscore)) + { + go_deeper(stack, depth, newscore); +#ifdef DEBUG_TRIEWALK + if (newscore > 0) + sprintf(changename[depth], "%.*s-%s: subst %c to %c", + sp->ts_twordlen, tword, fword + sp->ts_fidx, + fword[sp->ts_fidx], c); + else + sprintf(changename[depth], "%.*s-%s: accept %c", + sp->ts_twordlen, tword, fword + sp->ts_fidx, + fword[sp->ts_fidx]); +#endif + ++depth; + sp = &stack[depth]; + ++sp->ts_fidx; + tword[sp->ts_twordlen++] = c; + sp->ts_arridx = idxs[arridx]; + if (newscore == SCORE_SUBST) + sp->ts_isdiff = DIFF_YES; + if (has_mbyte) + { + /* Multi-byte characters are a bit complicated to + * handle: They differ when any of the bytes differ + * and then their length may also differ. */ + if (sp->ts_tcharlen == 0) + { + /* First byte. */ + sp->ts_tcharidx = 0; + sp->ts_tcharlen = MB_BYTE2LEN(c); + sp->ts_fcharstart = sp->ts_fidx - 1; + sp->ts_isdiff = (newscore != 0) + ? DIFF_YES : DIFF_NONE; + } + else if (sp->ts_isdiff == DIFF_INSERT) + /* When inserting trail bytes don't advance in the + * bad word. */ + --sp->ts_fidx; + if (++sp->ts_tcharidx == sp->ts_tcharlen) + { + /* Last byte of character. */ + if (sp->ts_isdiff == DIFF_YES) + { + /* Correct ts_fidx for the byte length of the + * character (we didn't check that before). */ + sp->ts_fidx = sp->ts_fcharstart + + MB_PTR2LEN( + fword + sp->ts_fcharstart); + /* For changing a composing character adjust + * the score from SCORE_SUBST to + * SCORE_SUBCOMP. */ + if (enc_utf8 + && utf_iscomposing( + utf_ptr2char(tword + + sp->ts_twordlen + - sp->ts_tcharlen)) + && utf_iscomposing( + utf_ptr2char(fword + + sp->ts_fcharstart))) + sp->ts_score -= + SCORE_SUBST - SCORE_SUBCOMP; + + /* For a similar character adjust score from + * SCORE_SUBST to SCORE_SIMILAR. */ + else if (!soundfold + && slang->sl_has_map + && similar_chars(slang, + mb_ptr2char(tword + + sp->ts_twordlen + - sp->ts_tcharlen), + mb_ptr2char(fword + + sp->ts_fcharstart))) + sp->ts_score -= + SCORE_SUBST - SCORE_SIMILAR; + } + else if (sp->ts_isdiff == DIFF_INSERT + && sp->ts_twordlen > sp->ts_tcharlen) + { + p = tword + sp->ts_twordlen - sp->ts_tcharlen; + c = mb_ptr2char(p); + if (enc_utf8 && utf_iscomposing(c)) + { + /* Inserting a composing char doesn't + * count that much. */ + sp->ts_score -= SCORE_INS - SCORE_INSCOMP; + } + else + { + /* If the previous character was the same, + * thus doubling a character, give a bonus + * to the score. Also for the soundfold + * tree (might seem illogical but does + * give better scores). */ + MB_PTR_BACK(tword, p); + if (c == mb_ptr2char(p)) + sp->ts_score -= SCORE_INS + - SCORE_INSDUP; + } + } + + /* Starting a new char, reset the length. */ + sp->ts_tcharlen = 0; + } + } + else + { + /* If we found a similar char adjust the score. + * We do this after calling go_deeper() because + * it's slow. */ + if (newscore != 0 + && !soundfold + && slang->sl_has_map + && similar_chars(slang, + c, fword[sp->ts_fidx - 1])) + sp->ts_score -= SCORE_SUBST - SCORE_SIMILAR; + } + } + } + break; + + case STATE_DEL: + /* When past the first byte of a multi-byte char don't try + * delete/insert/swap a character. */ + if (has_mbyte && sp->ts_tcharlen > 0) + { + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_FINAL; + break; + } + /* + * Try skipping one character in the bad word (delete it). + */ + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_INS_PREP; + sp->ts_curi = 1; + if (soundfold && sp->ts_fidx == 0 && fword[sp->ts_fidx] == '*') + /* Deleting a vowel at the start of a word counts less, see + * soundalike_score(). */ + newscore = 2 * SCORE_DEL / 3; + else + newscore = SCORE_DEL; + if (fword[sp->ts_fidx] != NUL + && TRY_DEEPER(su, stack, depth, newscore)) + { + go_deeper(stack, depth, newscore); +#ifdef DEBUG_TRIEWALK + sprintf(changename[depth], "%.*s-%s: delete %c", + sp->ts_twordlen, tword, fword + sp->ts_fidx, + fword[sp->ts_fidx]); +#endif + ++depth; + + /* Remember what character we deleted, so that we can avoid + * inserting it again. */ + stack[depth].ts_flags |= TSF_DIDDEL; + stack[depth].ts_delidx = sp->ts_fidx; + + /* Advance over the character in fword[]. Give a bonus to the + * score if the same character is following "nn" -> "n". It's + * a bit illogical for soundfold tree but it does give better + * results. */ + if (has_mbyte) + { + c = mb_ptr2char(fword + sp->ts_fidx); + stack[depth].ts_fidx += MB_PTR2LEN(fword + sp->ts_fidx); + if (enc_utf8 && utf_iscomposing(c)) + stack[depth].ts_score -= SCORE_DEL - SCORE_DELCOMP; + else if (c == mb_ptr2char(fword + stack[depth].ts_fidx)) + stack[depth].ts_score -= SCORE_DEL - SCORE_DELDUP; + } + else + { + ++stack[depth].ts_fidx; + if (fword[sp->ts_fidx] == fword[sp->ts_fidx + 1]) + stack[depth].ts_score -= SCORE_DEL - SCORE_DELDUP; + } + break; + } + /* FALLTHROUGH */ + + case STATE_INS_PREP: + if (sp->ts_flags & TSF_DIDDEL) + { + /* If we just deleted a byte then inserting won't make sense, + * a substitute is always cheaper. */ + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_SWAP; + break; + } + + /* skip over NUL bytes */ + n = sp->ts_arridx; + for (;;) + { + if (sp->ts_curi > byts[n]) + { + /* Only NUL bytes at this node, go to next state. */ + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_SWAP; + break; + } + if (byts[n + sp->ts_curi] != NUL) + { + /* Found a byte to insert. */ + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_INS; + break; + } + ++sp->ts_curi; + } + break; + + /* FALLTHROUGH */ + + case STATE_INS: + /* Insert one byte. Repeat this for each possible byte at this + * node. */ + n = sp->ts_arridx; + if (sp->ts_curi > byts[n]) + { + /* Done all bytes at this node, go to next state. */ + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_SWAP; + break; + } + + /* Do one more byte at this node, but: + * - Skip NUL bytes. + * - Skip the byte if it's equal to the byte in the word, + * accepting that byte is always better. + */ + n += sp->ts_curi++; + c = byts[n]; + if (soundfold && sp->ts_twordlen == 0 && c == '*') + /* Inserting a vowel at the start of a word counts less, + * see soundalike_score(). */ + newscore = 2 * SCORE_INS / 3; + else + newscore = SCORE_INS; + if (c != fword[sp->ts_fidx] + && TRY_DEEPER(su, stack, depth, newscore)) + { + go_deeper(stack, depth, newscore); +#ifdef DEBUG_TRIEWALK + sprintf(changename[depth], "%.*s-%s: insert %c", + sp->ts_twordlen, tword, fword + sp->ts_fidx, + c); +#endif + ++depth; + sp = &stack[depth]; + tword[sp->ts_twordlen++] = c; + sp->ts_arridx = idxs[n]; + if (has_mbyte) + { + fl = MB_BYTE2LEN(c); + if (fl > 1) + { + /* There are following bytes for the same character. + * We must find all bytes before trying + * delete/insert/swap/etc. */ + sp->ts_tcharlen = fl; + sp->ts_tcharidx = 1; + sp->ts_isdiff = DIFF_INSERT; + } + } + else + fl = 1; + if (fl == 1) + { + /* If the previous character was the same, thus doubling a + * character, give a bonus to the score. Also for + * soundfold words (illogical but does give a better + * score). */ + if (sp->ts_twordlen >= 2 + && tword[sp->ts_twordlen - 2] == c) + sp->ts_score -= SCORE_INS - SCORE_INSDUP; + } + } + break; + + case STATE_SWAP: + /* + * Swap two bytes in the bad word: "12" -> "21". + * We change "fword" here, it's changed back afterwards at + * STATE_UNSWAP. + */ + p = fword + sp->ts_fidx; + c = *p; + if (c == NUL) + { + /* End of word, can't swap or replace. */ + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_FINAL; + break; + } + + /* Don't swap if the first character is not a word character. + * SWAP3 etc. also don't make sense then. */ + if (!soundfold && !spell_iswordp(p, curwin)) + { + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_REP_INI; + break; + } + + if (has_mbyte) + { + n = MB_CPTR2LEN(p); + c = mb_ptr2char(p); + if (p[n] == NUL) + c2 = NUL; + else if (!soundfold && !spell_iswordp(p + n, curwin)) + c2 = c; /* don't swap non-word char */ + else + c2 = mb_ptr2char(p + n); + } + else + { + if (p[1] == NUL) + c2 = NUL; + else if (!soundfold && !spell_iswordp(p + 1, curwin)) + c2 = c; /* don't swap non-word char */ + else + c2 = p[1]; + } + + /* When the second character is NUL we can't swap. */ + if (c2 == NUL) + { + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_REP_INI; + break; + } + + /* When characters are identical, swap won't do anything. + * Also get here if the second char is not a word character. */ + if (c == c2) + { + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_SWAP3; + break; + } + if (c2 != NUL && TRY_DEEPER(su, stack, depth, SCORE_SWAP)) + { + go_deeper(stack, depth, SCORE_SWAP); +#ifdef DEBUG_TRIEWALK + sprintf(changename[depth], "%.*s-%s: swap %c and %c", + sp->ts_twordlen, tword, fword + sp->ts_fidx, + c, c2); +#endif + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_UNSWAP; + ++depth; + if (has_mbyte) + { + fl = mb_char2len(c2); + mch_memmove(p, p + n, fl); + mb_char2bytes(c, p + fl); + stack[depth].ts_fidxtry = sp->ts_fidx + n + fl; + } + else + { + p[0] = c2; + p[1] = c; + stack[depth].ts_fidxtry = sp->ts_fidx + 2; + } + } + else + { + /* If this swap doesn't work then SWAP3 won't either. */ + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_REP_INI; + } + break; + + case STATE_UNSWAP: + /* Undo the STATE_SWAP swap: "21" -> "12". */ + p = fword + sp->ts_fidx; + if (has_mbyte) + { + n = MB_PTR2LEN(p); + c = mb_ptr2char(p + n); + mch_memmove(p + MB_PTR2LEN(p + n), p, n); + mb_char2bytes(c, p); + } + else + { + c = *p; + *p = p[1]; + p[1] = c; + } + /* FALLTHROUGH */ + + case STATE_SWAP3: + /* Swap two bytes, skipping one: "123" -> "321". We change + * "fword" here, it's changed back afterwards at STATE_UNSWAP3. */ + p = fword + sp->ts_fidx; + if (has_mbyte) + { + n = MB_CPTR2LEN(p); + c = mb_ptr2char(p); + fl = MB_CPTR2LEN(p + n); + c2 = mb_ptr2char(p + n); + if (!soundfold && !spell_iswordp(p + n + fl, curwin)) + c3 = c; /* don't swap non-word char */ + else + c3 = mb_ptr2char(p + n + fl); + } + else + { + c = *p; + c2 = p[1]; + if (!soundfold && !spell_iswordp(p + 2, curwin)) + c3 = c; /* don't swap non-word char */ + else + c3 = p[2]; + } + + /* When characters are identical: "121" then SWAP3 result is + * identical, ROT3L result is same as SWAP: "211", ROT3L result is + * same as SWAP on next char: "112". Thus skip all swapping. + * Also skip when c3 is NUL. + * Also get here when the third character is not a word character. + * Second character may any char: "a.b" -> "b.a" */ + if (c == c3 || c3 == NUL) + { + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_REP_INI; + break; + } + if (TRY_DEEPER(su, stack, depth, SCORE_SWAP3)) + { + go_deeper(stack, depth, SCORE_SWAP3); +#ifdef DEBUG_TRIEWALK + sprintf(changename[depth], "%.*s-%s: swap3 %c and %c", + sp->ts_twordlen, tword, fword + sp->ts_fidx, + c, c3); +#endif + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_UNSWAP3; + ++depth; + if (has_mbyte) + { + tl = mb_char2len(c3); + mch_memmove(p, p + n + fl, tl); + mb_char2bytes(c2, p + tl); + mb_char2bytes(c, p + fl + tl); + stack[depth].ts_fidxtry = sp->ts_fidx + n + fl + tl; + } + else + { + p[0] = p[2]; + p[2] = c; + stack[depth].ts_fidxtry = sp->ts_fidx + 3; + } + } + else + { + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_REP_INI; + } + break; + + case STATE_UNSWAP3: + /* Undo STATE_SWAP3: "321" -> "123" */ + p = fword + sp->ts_fidx; + if (has_mbyte) + { + n = MB_PTR2LEN(p); + c2 = mb_ptr2char(p + n); + fl = MB_PTR2LEN(p + n); + c = mb_ptr2char(p + n + fl); + tl = MB_PTR2LEN(p + n + fl); + mch_memmove(p + fl + tl, p, n); + mb_char2bytes(c, p); + mb_char2bytes(c2, p + tl); + p = p + tl; + } + else + { + c = *p; + *p = p[2]; + p[2] = c; + ++p; + } + + if (!soundfold && !spell_iswordp(p, curwin)) + { + /* Middle char is not a word char, skip the rotate. First and + * third char were already checked at swap and swap3. */ + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_REP_INI; + break; + } + + /* Rotate three characters left: "123" -> "231". We change + * "fword" here, it's changed back afterwards at STATE_UNROT3L. */ + if (TRY_DEEPER(su, stack, depth, SCORE_SWAP3)) + { + go_deeper(stack, depth, SCORE_SWAP3); +#ifdef DEBUG_TRIEWALK + p = fword + sp->ts_fidx; + sprintf(changename[depth], "%.*s-%s: rotate left %c%c%c", + sp->ts_twordlen, tword, fword + sp->ts_fidx, + p[0], p[1], p[2]); +#endif + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_UNROT3L; + ++depth; + p = fword + sp->ts_fidx; + if (has_mbyte) + { + n = MB_CPTR2LEN(p); + c = mb_ptr2char(p); + fl = MB_CPTR2LEN(p + n); + fl += MB_CPTR2LEN(p + n + fl); + mch_memmove(p, p + n, fl); + mb_char2bytes(c, p + fl); + stack[depth].ts_fidxtry = sp->ts_fidx + n + fl; + } + else + { + c = *p; + *p = p[1]; + p[1] = p[2]; + p[2] = c; + stack[depth].ts_fidxtry = sp->ts_fidx + 3; + } + } + else + { + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_REP_INI; + } + break; + + case STATE_UNROT3L: + /* Undo ROT3L: "231" -> "123" */ + p = fword + sp->ts_fidx; + if (has_mbyte) + { + n = MB_PTR2LEN(p); + n += MB_PTR2LEN(p + n); + c = mb_ptr2char(p + n); + tl = MB_PTR2LEN(p + n); + mch_memmove(p + tl, p, n); + mb_char2bytes(c, p); + } + else + { + c = p[2]; + p[2] = p[1]; + p[1] = *p; + *p = c; + } + + /* Rotate three bytes right: "123" -> "312". We change "fword" + * here, it's changed back afterwards at STATE_UNROT3R. */ + if (TRY_DEEPER(su, stack, depth, SCORE_SWAP3)) + { + go_deeper(stack, depth, SCORE_SWAP3); +#ifdef DEBUG_TRIEWALK + p = fword + sp->ts_fidx; + sprintf(changename[depth], "%.*s-%s: rotate right %c%c%c", + sp->ts_twordlen, tword, fword + sp->ts_fidx, + p[0], p[1], p[2]); +#endif + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_UNROT3R; + ++depth; + p = fword + sp->ts_fidx; + if (has_mbyte) + { + n = MB_CPTR2LEN(p); + n += MB_CPTR2LEN(p + n); + c = mb_ptr2char(p + n); + tl = MB_CPTR2LEN(p + n); + mch_memmove(p + tl, p, n); + mb_char2bytes(c, p); + stack[depth].ts_fidxtry = sp->ts_fidx + n + tl; + } + else + { + c = p[2]; + p[2] = p[1]; + p[1] = *p; + *p = c; + stack[depth].ts_fidxtry = sp->ts_fidx + 3; + } + } + else + { + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_REP_INI; + } + break; + + case STATE_UNROT3R: + /* Undo ROT3R: "312" -> "123" */ + p = fword + sp->ts_fidx; + if (has_mbyte) + { + c = mb_ptr2char(p); + tl = MB_PTR2LEN(p); + n = MB_PTR2LEN(p + tl); + n += MB_PTR2LEN(p + tl + n); + mch_memmove(p, p + tl, n); + mb_char2bytes(c, p + n); + } + else + { + c = *p; + *p = p[1]; + p[1] = p[2]; + p[2] = c; + } + /* FALLTHROUGH */ + + case STATE_REP_INI: + /* Check if matching with REP items from the .aff file would work. + * Quickly skip if: + * - there are no REP items and we are not in the soundfold trie + * - the score is going to be too high anyway + * - already applied a REP item or swapped here */ + if ((lp->lp_replang == NULL && !soundfold) + || sp->ts_score + SCORE_REP >= su->su_maxscore + || sp->ts_fidx < sp->ts_fidxtry) + { + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_FINAL; + break; + } + + /* Use the first byte to quickly find the first entry that may + * match. If the index is -1 there is none. */ + if (soundfold) + sp->ts_curi = slang->sl_repsal_first[fword[sp->ts_fidx]]; + else + sp->ts_curi = lp->lp_replang->sl_rep_first[fword[sp->ts_fidx]]; + + if (sp->ts_curi < 0) + { + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_FINAL; + break; + } + + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_REP; + /* FALLTHROUGH */ + + case STATE_REP: + /* Try matching with REP items from the .aff file. For each match + * replace the characters and check if the resulting word is + * valid. */ + p = fword + sp->ts_fidx; + + if (soundfold) + gap = &slang->sl_repsal; + else + gap = &lp->lp_replang->sl_rep; + while (sp->ts_curi < gap->ga_len) + { + ftp = (fromto_T *)gap->ga_data + sp->ts_curi++; + if (*ftp->ft_from != *p) + { + /* past possible matching entries */ + sp->ts_curi = gap->ga_len; + break; + } + if (STRNCMP(ftp->ft_from, p, STRLEN(ftp->ft_from)) == 0 + && TRY_DEEPER(su, stack, depth, SCORE_REP)) + { + go_deeper(stack, depth, SCORE_REP); +#ifdef DEBUG_TRIEWALK + sprintf(changename[depth], "%.*s-%s: replace %s with %s", + sp->ts_twordlen, tword, fword + sp->ts_fidx, + ftp->ft_from, ftp->ft_to); +#endif + /* Need to undo this afterwards. */ + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_REP_UNDO; + + /* Change the "from" to the "to" string. */ + ++depth; + fl = (int)STRLEN(ftp->ft_from); + tl = (int)STRLEN(ftp->ft_to); + if (fl != tl) + { + STRMOVE(p + tl, p + fl); + repextra += tl - fl; + } + mch_memmove(p, ftp->ft_to, tl); + stack[depth].ts_fidxtry = sp->ts_fidx + tl; + stack[depth].ts_tcharlen = 0; + break; + } + } + + if (sp->ts_curi >= gap->ga_len && sp->ts_state == STATE_REP) + { + /* No (more) matches. */ + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_FINAL; + } + + break; + + case STATE_REP_UNDO: + /* Undo a REP replacement and continue with the next one. */ + if (soundfold) + gap = &slang->sl_repsal; + else + gap = &lp->lp_replang->sl_rep; + ftp = (fromto_T *)gap->ga_data + sp->ts_curi - 1; + fl = (int)STRLEN(ftp->ft_from); + tl = (int)STRLEN(ftp->ft_to); + p = fword + sp->ts_fidx; + if (fl != tl) + { + STRMOVE(p + fl, p + tl); + repextra -= tl - fl; + } + mch_memmove(p, ftp->ft_from, fl); + PROF_STORE(sp->ts_state) + sp->ts_state = STATE_REP; + break; + + default: + /* Did all possible states at this level, go up one level. */ + --depth; + + if (depth >= 0 && stack[depth].ts_prefixdepth == PFD_PREFIXTREE) + { + /* Continue in or go back to the prefix tree. */ + byts = pbyts; + idxs = pidxs; + } + + /* Don't check for CTRL-C too often, it takes time. */ + if (--breakcheckcount == 0) + { + ui_breakcheck(); + breakcheckcount = 1000; + } + } + } +} + + +/* + * Go one level deeper in the tree. + */ + static void +go_deeper(trystate_T *stack, int depth, int score_add) +{ + stack[depth + 1] = stack[depth]; + stack[depth + 1].ts_state = STATE_START; + stack[depth + 1].ts_score = stack[depth].ts_score + score_add; + stack[depth + 1].ts_curi = 1; /* start just after length byte */ + stack[depth + 1].ts_flags = 0; +} + +/* + * Case-folding may change the number of bytes: Count nr of chars in + * fword[flen] and return the byte length of that many chars in "word". + */ + static int +nofold_len(char_u *fword, int flen, char_u *word) +{ + char_u *p; + int i = 0; + + for (p = fword; p < fword + flen; MB_PTR_ADV(p)) + ++i; + for (p = word; i > 0; MB_PTR_ADV(p)) + --i; + return (int)(p - word); +} + +/* + * "fword" is a good word with case folded. Find the matching keep-case + * words and put it in "kword". + * Theoretically there could be several keep-case words that result in the + * same case-folded word, but we only find one... + */ + static void +find_keepcap_word(slang_T *slang, char_u *fword, char_u *kword) +{ + char_u uword[MAXWLEN]; /* "fword" in upper-case */ + int depth; + idx_T tryidx; + + /* The following arrays are used at each depth in the tree. */ + idx_T arridx[MAXWLEN]; + int round[MAXWLEN]; + int fwordidx[MAXWLEN]; + int uwordidx[MAXWLEN]; + int kwordlen[MAXWLEN]; + + int flen, ulen; + int l; + int len; + int c; + idx_T lo, hi, m; + char_u *p; + char_u *byts = slang->sl_kbyts; /* array with bytes of the words */ + idx_T *idxs = slang->sl_kidxs; /* array with indexes */ + + if (byts == NULL) + { + /* array is empty: "cannot happen" */ + *kword = NUL; + return; + } + + /* Make an all-cap version of "fword". */ + allcap_copy(fword, uword); + + /* + * Each character needs to be tried both case-folded and upper-case. + * All this gets very complicated if we keep in mind that changing case + * may change the byte length of a multi-byte character... + */ + depth = 0; + arridx[0] = 0; + round[0] = 0; + fwordidx[0] = 0; + uwordidx[0] = 0; + kwordlen[0] = 0; + while (depth >= 0) + { + if (fword[fwordidx[depth]] == NUL) + { + /* We are at the end of "fword". If the tree allows a word to end + * here we have found a match. */ + if (byts[arridx[depth] + 1] == 0) + { + kword[kwordlen[depth]] = NUL; + return; + } + + /* kword is getting too long, continue one level up */ + --depth; + } + else if (++round[depth] > 2) + { + /* tried both fold-case and upper-case character, continue one + * level up */ + --depth; + } + else + { + /* + * round[depth] == 1: Try using the folded-case character. + * round[depth] == 2: Try using the upper-case character. + */ + if (has_mbyte) + { + flen = MB_CPTR2LEN(fword + fwordidx[depth]); + ulen = MB_CPTR2LEN(uword + uwordidx[depth]); + } + else + ulen = flen = 1; + if (round[depth] == 1) + { + p = fword + fwordidx[depth]; + l = flen; + } + else + { + p = uword + uwordidx[depth]; + l = ulen; + } + + for (tryidx = arridx[depth]; l > 0; --l) + { + /* Perform a binary search in the list of accepted bytes. */ + len = byts[tryidx++]; + c = *p++; + lo = tryidx; + hi = tryidx + len - 1; + while (lo < hi) + { + m = (lo + hi) / 2; + if (byts[m] > c) + hi = m - 1; + else if (byts[m] < c) + lo = m + 1; + else + { + lo = hi = m; + break; + } + } + + /* Stop if there is no matching byte. */ + if (hi < lo || byts[lo] != c) + break; + + /* Continue at the child (if there is one). */ + tryidx = idxs[lo]; + } + + if (l == 0) + { + /* + * Found the matching char. Copy it to "kword" and go a + * level deeper. + */ + if (round[depth] == 1) + { + STRNCPY(kword + kwordlen[depth], fword + fwordidx[depth], + flen); + kwordlen[depth + 1] = kwordlen[depth] + flen; + } + else + { + STRNCPY(kword + kwordlen[depth], uword + uwordidx[depth], + ulen); + kwordlen[depth + 1] = kwordlen[depth] + ulen; + } + fwordidx[depth + 1] = fwordidx[depth] + flen; + uwordidx[depth + 1] = uwordidx[depth] + ulen; + + ++depth; + arridx[depth] = tryidx; + round[depth] = 0; + } + } + } + + /* Didn't find it: "cannot happen". */ + *kword = NUL; +} + +/* + * Compute the sound-a-like score for suggestions in su->su_ga and add them to + * su->su_sga. + */ + static void +score_comp_sal(suginfo_T *su) +{ + langp_T *lp; + char_u badsound[MAXWLEN]; + int i; + suggest_T *stp; + suggest_T *sstp; + int score; + int lpi; + + if (ga_grow(&su->su_sga, su->su_ga.ga_len) == FAIL) + return; + + /* Use the sound-folding of the first language that supports it. */ + for (lpi = 0; lpi < curwin->w_s->b_langp.ga_len; ++lpi) + { + lp = LANGP_ENTRY(curwin->w_s->b_langp, lpi); + if (lp->lp_slang->sl_sal.ga_len > 0) + { + /* soundfold the bad word */ + spell_soundfold(lp->lp_slang, su->su_fbadword, TRUE, badsound); + + for (i = 0; i < su->su_ga.ga_len; ++i) + { + stp = &SUG(su->su_ga, i); + + /* Case-fold the suggested word, sound-fold it and compute the + * sound-a-like score. */ + score = stp_sal_score(stp, su, lp->lp_slang, badsound); + if (score < SCORE_MAXMAX) + { + /* Add the suggestion. */ + sstp = &SUG(su->su_sga, su->su_sga.ga_len); + sstp->st_word = vim_strsave(stp->st_word); + if (sstp->st_word != NULL) + { + sstp->st_wordlen = stp->st_wordlen; + sstp->st_score = score; + sstp->st_altscore = 0; + sstp->st_orglen = stp->st_orglen; + ++su->su_sga.ga_len; + } + } + } + break; + } + } +} + +/* + * Combine the list of suggestions in su->su_ga and su->su_sga. + * They are entwined. + */ + static void +score_combine(suginfo_T *su) +{ + int i; + int j; + garray_T ga; + garray_T *gap; + langp_T *lp; + suggest_T *stp; + char_u *p; + char_u badsound[MAXWLEN]; + int round; + int lpi; + slang_T *slang = NULL; + + /* Add the alternate score to su_ga. */ + for (lpi = 0; lpi < curwin->w_s->b_langp.ga_len; ++lpi) + { + lp = LANGP_ENTRY(curwin->w_s->b_langp, lpi); + if (lp->lp_slang->sl_sal.ga_len > 0) + { + /* soundfold the bad word */ + slang = lp->lp_slang; + spell_soundfold(slang, su->su_fbadword, TRUE, badsound); + + for (i = 0; i < su->su_ga.ga_len; ++i) + { + stp = &SUG(su->su_ga, i); + stp->st_altscore = stp_sal_score(stp, su, slang, badsound); + if (stp->st_altscore == SCORE_MAXMAX) + stp->st_score = (stp->st_score * 3 + SCORE_BIG) / 4; + else + stp->st_score = (stp->st_score * 3 + + stp->st_altscore) / 4; + stp->st_salscore = FALSE; + } + break; + } + } + + if (slang == NULL) /* Using "double" without sound folding. */ + { + (void)cleanup_suggestions(&su->su_ga, su->su_maxscore, + su->su_maxcount); + return; + } + + /* Add the alternate score to su_sga. */ + for (i = 0; i < su->su_sga.ga_len; ++i) + { + stp = &SUG(su->su_sga, i); + stp->st_altscore = spell_edit_score(slang, + su->su_badword, stp->st_word); + if (stp->st_score == SCORE_MAXMAX) + stp->st_score = (SCORE_BIG * 7 + stp->st_altscore) / 8; + else + stp->st_score = (stp->st_score * 7 + stp->st_altscore) / 8; + stp->st_salscore = TRUE; + } + + /* Remove bad suggestions, sort the suggestions and truncate at "maxcount" + * for both lists. */ + check_suggestions(su, &su->su_ga); + (void)cleanup_suggestions(&su->su_ga, su->su_maxscore, su->su_maxcount); + check_suggestions(su, &su->su_sga); + (void)cleanup_suggestions(&su->su_sga, su->su_maxscore, su->su_maxcount); + + ga_init2(&ga, (int)sizeof(suginfo_T), 1); + if (ga_grow(&ga, su->su_ga.ga_len + su->su_sga.ga_len) == FAIL) + return; + + stp = &SUG(ga, 0); + for (i = 0; i < su->su_ga.ga_len || i < su->su_sga.ga_len; ++i) + { + /* round 1: get a suggestion from su_ga + * round 2: get a suggestion from su_sga */ + for (round = 1; round <= 2; ++round) + { + gap = round == 1 ? &su->su_ga : &su->su_sga; + if (i < gap->ga_len) + { + /* Don't add a word if it's already there. */ + p = SUG(*gap, i).st_word; + for (j = 0; j < ga.ga_len; ++j) + if (STRCMP(stp[j].st_word, p) == 0) + break; + if (j == ga.ga_len) + stp[ga.ga_len++] = SUG(*gap, i); + else + vim_free(p); + } + } + } + + ga_clear(&su->su_ga); + ga_clear(&su->su_sga); + + /* Truncate the list to the number of suggestions that will be displayed. */ + if (ga.ga_len > su->su_maxcount) + { + for (i = su->su_maxcount; i < ga.ga_len; ++i) + vim_free(stp[i].st_word); + ga.ga_len = su->su_maxcount; + } + + su->su_ga = ga; +} + +/* + * For the goodword in "stp" compute the soundalike score compared to the + * badword. + */ + static int +stp_sal_score( + suggest_T *stp, + suginfo_T *su, + slang_T *slang, + char_u *badsound) /* sound-folded badword */ +{ + char_u *p; + char_u *pbad; + char_u *pgood; + char_u badsound2[MAXWLEN]; + char_u fword[MAXWLEN]; + char_u goodsound[MAXWLEN]; + char_u goodword[MAXWLEN]; + int lendiff; + + lendiff = (int)(su->su_badlen - stp->st_orglen); + if (lendiff >= 0) + pbad = badsound; + else + { + /* soundfold the bad word with more characters following */ + (void)spell_casefold(su->su_badptr, stp->st_orglen, fword, MAXWLEN); + + /* When joining two words the sound often changes a lot. E.g., "t he" + * sounds like "t h" while "the" sounds like "@". Avoid that by + * removing the space. Don't do it when the good word also contains a + * space. */ + if (VIM_ISWHITE(su->su_badptr[su->su_badlen]) + && *skiptowhite(stp->st_word) == NUL) + for (p = fword; *(p = skiptowhite(p)) != NUL; ) + STRMOVE(p, p + 1); + + spell_soundfold(slang, fword, TRUE, badsound2); + pbad = badsound2; + } + + if (lendiff > 0 && stp->st_wordlen + lendiff < MAXWLEN) + { + /* Add part of the bad word to the good word, so that we soundfold + * what replaces the bad word. */ + STRCPY(goodword, stp->st_word); + vim_strncpy(goodword + stp->st_wordlen, + su->su_badptr + su->su_badlen - lendiff, lendiff); + pgood = goodword; + } + else + pgood = stp->st_word; + + /* Sound-fold the word and compute the score for the difference. */ + spell_soundfold(slang, pgood, FALSE, goodsound); + + return soundalike_score(goodsound, pbad); +} + +/* structure used to store soundfolded words that add_sound_suggest() has + * handled already. */ +typedef struct +{ + short sft_score; /* lowest score used */ + char_u sft_word[1]; /* soundfolded word, actually longer */ +} sftword_T; + +static sftword_T dumsft; +#define HIKEY2SFT(p) ((sftword_T *)(p - (dumsft.sft_word - (char_u *)&dumsft))) +#define HI2SFT(hi) HIKEY2SFT((hi)->hi_key) + +/* + * Prepare for calling suggest_try_soundalike(). + */ + static void +suggest_try_soundalike_prep(void) +{ + langp_T *lp; + int lpi; + slang_T *slang; + + /* Do this for all languages that support sound folding and for which a + * .sug file has been loaded. */ + for (lpi = 0; lpi < curwin->w_s->b_langp.ga_len; ++lpi) + { + lp = LANGP_ENTRY(curwin->w_s->b_langp, lpi); + slang = lp->lp_slang; + if (slang->sl_sal.ga_len > 0 && slang->sl_sbyts != NULL) + /* prepare the hashtable used by add_sound_suggest() */ + hash_init(&slang->sl_sounddone); + } +} + +/* + * Find suggestions by comparing the word in a sound-a-like form. + * Note: This doesn't support postponed prefixes. + */ + static void +suggest_try_soundalike(suginfo_T *su) +{ + char_u salword[MAXWLEN]; + langp_T *lp; + int lpi; + slang_T *slang; + + /* Do this for all languages that support sound folding and for which a + * .sug file has been loaded. */ + for (lpi = 0; lpi < curwin->w_s->b_langp.ga_len; ++lpi) + { + lp = LANGP_ENTRY(curwin->w_s->b_langp, lpi); + slang = lp->lp_slang; + if (slang->sl_sal.ga_len > 0 && slang->sl_sbyts != NULL) + { + /* soundfold the bad word */ + spell_soundfold(slang, su->su_fbadword, TRUE, salword); + + /* try all kinds of inserts/deletes/swaps/etc. */ + /* TODO: also soundfold the next words, so that we can try joining + * and splitting */ +#ifdef SUGGEST_PROFILE + prof_init(); +#endif + suggest_trie_walk(su, lp, salword, TRUE); +#ifdef SUGGEST_PROFILE + prof_report("soundalike"); +#endif + } + } +} + +/* + * Finish up after calling suggest_try_soundalike(). + */ + static void +suggest_try_soundalike_finish(void) +{ + langp_T *lp; + int lpi; + slang_T *slang; + int todo; + hashitem_T *hi; + + /* Do this for all languages that support sound folding and for which a + * .sug file has been loaded. */ + for (lpi = 0; lpi < curwin->w_s->b_langp.ga_len; ++lpi) + { + lp = LANGP_ENTRY(curwin->w_s->b_langp, lpi); + slang = lp->lp_slang; + if (slang->sl_sal.ga_len > 0 && slang->sl_sbyts != NULL) + { + /* Free the info about handled words. */ + todo = (int)slang->sl_sounddone.ht_used; + for (hi = slang->sl_sounddone.ht_array; todo > 0; ++hi) + if (!HASHITEM_EMPTY(hi)) + { + vim_free(HI2SFT(hi)); + --todo; + } + + /* Clear the hashtable, it may also be used by another region. */ + hash_clear(&slang->sl_sounddone); + hash_init(&slang->sl_sounddone); + } + } +} + +/* + * A match with a soundfolded word is found. Add the good word(s) that + * produce this soundfolded word. + */ + static void +add_sound_suggest( + suginfo_T *su, + char_u *goodword, + int score, /* soundfold score */ + langp_T *lp) +{ + slang_T *slang = lp->lp_slang; /* language for sound folding */ + int sfwordnr; + char_u *nrline; + int orgnr; + char_u theword[MAXWLEN]; + int i; + int wlen; + char_u *byts; + idx_T *idxs; + int n; + int wordcount; + int wc; + int goodscore; + hash_T hash; + hashitem_T *hi; + sftword_T *sft; + int bc, gc; + int limit; + + /* + * It's very well possible that the same soundfold word is found several + * times with different scores. Since the following is quite slow only do + * the words that have a better score than before. Use a hashtable to + * remember the words that have been done. + */ + hash = hash_hash(goodword); + hi = hash_lookup(&slang->sl_sounddone, goodword, hash); + if (HASHITEM_EMPTY(hi)) + { + sft = (sftword_T *)alloc((unsigned)(sizeof(sftword_T) + + STRLEN(goodword))); + if (sft != NULL) + { + sft->sft_score = score; + STRCPY(sft->sft_word, goodword); + hash_add_item(&slang->sl_sounddone, hi, sft->sft_word, hash); + } + } + else + { + sft = HI2SFT(hi); + if (score >= sft->sft_score) + return; + sft->sft_score = score; + } + + /* + * Find the word nr in the soundfold tree. + */ + sfwordnr = soundfold_find(slang, goodword); + if (sfwordnr < 0) + { + internal_error("add_sound_suggest()"); + return; + } + + /* + * go over the list of good words that produce this soundfold word + */ + nrline = ml_get_buf(slang->sl_sugbuf, (linenr_T)(sfwordnr + 1), FALSE); + orgnr = 0; + while (*nrline != NUL) + { + /* The wordnr was stored in a minimal nr of bytes as an offset to the + * previous wordnr. */ + orgnr += bytes2offset(&nrline); + + byts = slang->sl_fbyts; + idxs = slang->sl_fidxs; + + /* Lookup the word "orgnr" one of the two tries. */ + n = 0; + wordcount = 0; + for (wlen = 0; wlen < MAXWLEN - 3; ++wlen) + { + i = 1; + if (wordcount == orgnr && byts[n + 1] == NUL) + break; /* found end of word */ + + if (byts[n + 1] == NUL) + ++wordcount; + + /* skip over the NUL bytes */ + for ( ; byts[n + i] == NUL; ++i) + if (i > byts[n]) /* safety check */ + { + STRCPY(theword + wlen, "BAD"); + wlen += 3; + goto badword; + } + + /* One of the siblings must have the word. */ + for ( ; i < byts[n]; ++i) + { + wc = idxs[idxs[n + i]]; /* nr of words under this byte */ + if (wordcount + wc > orgnr) + break; + wordcount += wc; + } + + theword[wlen] = byts[n + i]; + n = idxs[n + i]; + } +badword: + theword[wlen] = NUL; + + /* Go over the possible flags and regions. */ + for (; i <= byts[n] && byts[n + i] == NUL; ++i) + { + char_u cword[MAXWLEN]; + char_u *p; + int flags = (int)idxs[n + i]; + + /* Skip words with the NOSUGGEST flag */ + if (flags & WF_NOSUGGEST) + continue; + + if (flags & WF_KEEPCAP) + { + /* Must find the word in the keep-case tree. */ + find_keepcap_word(slang, theword, cword); + p = cword; + } + else + { + flags |= su->su_badflags; + if ((flags & WF_CAPMASK) != 0) + { + /* Need to fix case according to "flags". */ + make_case_word(theword, cword, flags); + p = cword; + } + else + p = theword; + } + + /* Add the suggestion. */ + if (sps_flags & SPS_DOUBLE) + { + /* Add the suggestion if the score isn't too bad. */ + if (score <= su->su_maxscore) + add_suggestion(su, &su->su_sga, p, su->su_badlen, + score, 0, FALSE, slang, FALSE); + } + else + { + /* Add a penalty for words in another region. */ + if ((flags & WF_REGION) + && (((unsigned)flags >> 16) & lp->lp_region) == 0) + goodscore = SCORE_REGION; + else + goodscore = 0; + + /* Add a small penalty for changing the first letter from + * lower to upper case. Helps for "tath" -> "Kath", which is + * less common than "tath" -> "path". Don't do it when the + * letter is the same, that has already been counted. */ + gc = PTR2CHAR(p); + if (SPELL_ISUPPER(gc)) + { + bc = PTR2CHAR(su->su_badword); + if (!SPELL_ISUPPER(bc) + && SPELL_TOFOLD(bc) != SPELL_TOFOLD(gc)) + goodscore += SCORE_ICASE / 2; + } + + /* Compute the score for the good word. This only does letter + * insert/delete/swap/replace. REP items are not considered, + * which may make the score a bit higher. + * Use a limit for the score to make it work faster. Use + * MAXSCORE(), because RESCORE() will change the score. + * If the limit is very high then the iterative method is + * inefficient, using an array is quicker. */ + limit = MAXSCORE(su->su_sfmaxscore - goodscore, score); + if (limit > SCORE_LIMITMAX) + goodscore += spell_edit_score(slang, su->su_badword, p); + else + goodscore += spell_edit_score_limit(slang, su->su_badword, + p, limit); + + /* When going over the limit don't bother to do the rest. */ + if (goodscore < SCORE_MAXMAX) + { + /* Give a bonus to words seen before. */ + goodscore = score_wordcount_adj(slang, goodscore, p, FALSE); + + /* Add the suggestion if the score isn't too bad. */ + goodscore = RESCORE(goodscore, score); + if (goodscore <= su->su_sfmaxscore) + add_suggestion(su, &su->su_ga, p, su->su_badlen, + goodscore, score, TRUE, slang, TRUE); + } + } + } + /* smsg("word %s (%d): %s (%d)", sftword, sftnr, theword, orgnr); */ + } +} + +/* + * Find word "word" in fold-case tree for "slang" and return the word number. + */ + static int +soundfold_find(slang_T *slang, char_u *word) +{ + idx_T arridx = 0; + int len; + int wlen = 0; + int c; + char_u *ptr = word; + char_u *byts; + idx_T *idxs; + int wordnr = 0; + + byts = slang->sl_sbyts; + idxs = slang->sl_sidxs; + + for (;;) + { + /* First byte is the number of possible bytes. */ + len = byts[arridx++]; + + /* If the first possible byte is a zero the word could end here. + * If the word ends we found the word. If not skip the NUL bytes. */ + c = ptr[wlen]; + if (byts[arridx] == NUL) + { + if (c == NUL) + break; + + /* Skip over the zeros, there can be several. */ + while (len > 0 && byts[arridx] == NUL) + { + ++arridx; + --len; + } + if (len == 0) + return -1; /* no children, word should have ended here */ + ++wordnr; + } + + /* If the word ends we didn't find it. */ + if (c == NUL) + return -1; + + /* Perform a binary search in the list of accepted bytes. */ + if (c == TAB) /* <Tab> is handled like <Space> */ + c = ' '; + while (byts[arridx] < c) + { + /* The word count is in the first idxs[] entry of the child. */ + wordnr += idxs[idxs[arridx]]; + ++arridx; + if (--len == 0) /* end of the bytes, didn't find it */ + return -1; + } + if (byts[arridx] != c) /* didn't find the byte */ + return -1; + + /* Continue at the child (if there is one). */ + arridx = idxs[arridx]; + ++wlen; + + /* One space in the good word may stand for several spaces in the + * checked word. */ + if (c == ' ') + while (ptr[wlen] == ' ' || ptr[wlen] == TAB) + ++wlen; + } + + return wordnr; +} + +/* + * Copy "fword" to "cword", fixing case according to "flags". + */ + static void +make_case_word(char_u *fword, char_u *cword, int flags) +{ + if (flags & WF_ALLCAP) + /* Make it all upper-case */ + allcap_copy(fword, cword); + else if (flags & WF_ONECAP) + /* Make the first letter upper-case */ + onecap_copy(fword, cword, TRUE); + else + /* Use goodword as-is. */ + STRCPY(cword, fword); +} + + +/* + * Return TRUE if "c1" and "c2" are similar characters according to the MAP + * lines in the .aff file. + */ + static int +similar_chars(slang_T *slang, int c1, int c2) +{ + int m1, m2; + char_u buf[MB_MAXBYTES + 1]; + hashitem_T *hi; + + if (c1 >= 256) + { + buf[mb_char2bytes(c1, buf)] = 0; + hi = hash_find(&slang->sl_map_hash, buf); + if (HASHITEM_EMPTY(hi)) + m1 = 0; + else + m1 = mb_ptr2char(hi->hi_key + STRLEN(hi->hi_key) + 1); + } + else + m1 = slang->sl_map_array[c1]; + if (m1 == 0) + return FALSE; + + + if (c2 >= 256) + { + buf[mb_char2bytes(c2, buf)] = 0; + hi = hash_find(&slang->sl_map_hash, buf); + if (HASHITEM_EMPTY(hi)) + m2 = 0; + else + m2 = mb_ptr2char(hi->hi_key + STRLEN(hi->hi_key) + 1); + } + else + m2 = slang->sl_map_array[c2]; + + return m1 == m2; +} + +/* + * Add a suggestion to the list of suggestions. + * For a suggestion that is already in the list the lowest score is remembered. + */ + static void +add_suggestion( + suginfo_T *su, + garray_T *gap, /* either su_ga or su_sga */ + char_u *goodword, + int badlenarg, /* len of bad word replaced with "goodword" */ + int score, + int altscore, + int had_bonus, /* value for st_had_bonus */ + slang_T *slang, /* language for sound folding */ + int maxsf) /* su_maxscore applies to soundfold score, + su_sfmaxscore to the total score. */ +{ + int goodlen; /* len of goodword changed */ + int badlen; /* len of bad word changed */ + suggest_T *stp; + suggest_T new_sug; + int i; + char_u *pgood, *pbad; + + /* Minimize "badlen" for consistency. Avoids that changing "the the" to + * "thee the" is added next to changing the first "the" the "thee". */ + pgood = goodword + STRLEN(goodword); + pbad = su->su_badptr + badlenarg; + for (;;) + { + goodlen = (int)(pgood - goodword); + badlen = (int)(pbad - su->su_badptr); + if (goodlen <= 0 || badlen <= 0) + break; + MB_PTR_BACK(goodword, pgood); + MB_PTR_BACK(su->su_badptr, pbad); + if (has_mbyte) + { + if (mb_ptr2char(pgood) != mb_ptr2char(pbad)) + break; + } + else if (*pgood != *pbad) + break; + } + + if (badlen == 0 && goodlen == 0) + /* goodword doesn't change anything; may happen for "the the" changing + * the first "the" to itself. */ + return; + + if (gap->ga_len == 0) + i = -1; + else + { + /* Check if the word is already there. Also check the length that is + * being replaced "thes," -> "these" is a different suggestion from + * "thes" -> "these". */ + stp = &SUG(*gap, 0); + for (i = gap->ga_len; --i >= 0; ++stp) + if (stp->st_wordlen == goodlen + && stp->st_orglen == badlen + && STRNCMP(stp->st_word, goodword, goodlen) == 0) + { + /* + * Found it. Remember the word with the lowest score. + */ + if (stp->st_slang == NULL) + stp->st_slang = slang; + + new_sug.st_score = score; + new_sug.st_altscore = altscore; + new_sug.st_had_bonus = had_bonus; + + if (stp->st_had_bonus != had_bonus) + { + /* Only one of the two had the soundalike score computed. + * Need to do that for the other one now, otherwise the + * scores can't be compared. This happens because + * suggest_try_change() doesn't compute the soundalike + * word to keep it fast, while some special methods set + * the soundalike score to zero. */ + if (had_bonus) + rescore_one(su, stp); + else + { + new_sug.st_word = stp->st_word; + new_sug.st_wordlen = stp->st_wordlen; + new_sug.st_slang = stp->st_slang; + new_sug.st_orglen = badlen; + rescore_one(su, &new_sug); + } + } + + if (stp->st_score > new_sug.st_score) + { + stp->st_score = new_sug.st_score; + stp->st_altscore = new_sug.st_altscore; + stp->st_had_bonus = new_sug.st_had_bonus; + } + break; + } + } + + if (i < 0 && ga_grow(gap, 1) == OK) + { + /* Add a suggestion. */ + stp = &SUG(*gap, gap->ga_len); + stp->st_word = vim_strnsave(goodword, goodlen); + if (stp->st_word != NULL) + { + stp->st_wordlen = goodlen; + stp->st_score = score; + stp->st_altscore = altscore; + stp->st_had_bonus = had_bonus; + stp->st_orglen = badlen; + stp->st_slang = slang; + ++gap->ga_len; + + /* If we have too many suggestions now, sort the list and keep + * the best suggestions. */ + if (gap->ga_len > SUG_MAX_COUNT(su)) + { + if (maxsf) + su->su_sfmaxscore = cleanup_suggestions(gap, + su->su_sfmaxscore, SUG_CLEAN_COUNT(su)); + else + su->su_maxscore = cleanup_suggestions(gap, + su->su_maxscore, SUG_CLEAN_COUNT(su)); + } + } + } +} + +/* + * Suggestions may in fact be flagged as errors. Esp. for banned words and + * for split words, such as "the the". Remove these from the list here. + */ + static void +check_suggestions( + suginfo_T *su, + garray_T *gap) /* either su_ga or su_sga */ +{ + suggest_T *stp; + int i; + char_u longword[MAXWLEN + 1]; + int len; + hlf_T attr; + + stp = &SUG(*gap, 0); + for (i = gap->ga_len - 1; i >= 0; --i) + { + /* Need to append what follows to check for "the the". */ + vim_strncpy(longword, stp[i].st_word, MAXWLEN); + len = stp[i].st_wordlen; + vim_strncpy(longword + len, su->su_badptr + stp[i].st_orglen, + MAXWLEN - len); + attr = HLF_COUNT; + (void)spell_check(curwin, longword, &attr, NULL, FALSE); + if (attr != HLF_COUNT) + { + /* Remove this entry. */ + vim_free(stp[i].st_word); + --gap->ga_len; + if (i < gap->ga_len) + mch_memmove(stp + i, stp + i + 1, + sizeof(suggest_T) * (gap->ga_len - i)); + } + } +} + + +/* + * Add a word to be banned. + */ + static void +add_banned( + suginfo_T *su, + char_u *word) +{ + char_u *s; + hash_T hash; + hashitem_T *hi; + + hash = hash_hash(word); + hi = hash_lookup(&su->su_banned, word, hash); + if (HASHITEM_EMPTY(hi)) + { + s = vim_strsave(word); + if (s != NULL) + hash_add_item(&su->su_banned, hi, s, hash); + } +} + +/* + * Recompute the score for all suggestions if sound-folding is possible. This + * is slow, thus only done for the final results. + */ + static void +rescore_suggestions(suginfo_T *su) +{ + int i; + + if (su->su_sallang != NULL) + for (i = 0; i < su->su_ga.ga_len; ++i) + rescore_one(su, &SUG(su->su_ga, i)); +} + +/* + * Recompute the score for one suggestion if sound-folding is possible. + */ + static void +rescore_one(suginfo_T *su, suggest_T *stp) +{ + slang_T *slang = stp->st_slang; + char_u sal_badword[MAXWLEN]; + char_u *p; + + /* Only rescore suggestions that have no sal score yet and do have a + * language. */ + if (slang != NULL && slang->sl_sal.ga_len > 0 && !stp->st_had_bonus) + { + if (slang == su->su_sallang) + p = su->su_sal_badword; + else + { + spell_soundfold(slang, su->su_fbadword, TRUE, sal_badword); + p = sal_badword; + } + + stp->st_altscore = stp_sal_score(stp, su, slang, p); + if (stp->st_altscore == SCORE_MAXMAX) + stp->st_altscore = SCORE_BIG; + stp->st_score = RESCORE(stp->st_score, stp->st_altscore); + stp->st_had_bonus = TRUE; + } +} + +static int +#ifdef __BORLANDC__ +_RTLENTRYF +#endif +sug_compare(const void *s1, const void *s2); + +/* + * Function given to qsort() to sort the suggestions on st_score. + * First on "st_score", then "st_altscore" then alphabetically. + */ + static int +#ifdef __BORLANDC__ +_RTLENTRYF +#endif +sug_compare(const void *s1, const void *s2) +{ + suggest_T *p1 = (suggest_T *)s1; + suggest_T *p2 = (suggest_T *)s2; + int n = p1->st_score - p2->st_score; + + if (n == 0) + { + n = p1->st_altscore - p2->st_altscore; + if (n == 0) + n = STRICMP(p1->st_word, p2->st_word); + } + return n; +} + +/* + * Cleanup the suggestions: + * - Sort on score. + * - Remove words that won't be displayed. + * Returns the maximum score in the list or "maxscore" unmodified. + */ + static int +cleanup_suggestions( + garray_T *gap, + int maxscore, + int keep) /* nr of suggestions to keep */ +{ + suggest_T *stp = &SUG(*gap, 0); + int i; + + /* Sort the list. */ + qsort(gap->ga_data, (size_t)gap->ga_len, sizeof(suggest_T), sug_compare); + + /* Truncate the list to the number of suggestions that will be displayed. */ + if (gap->ga_len > keep) + { + for (i = keep; i < gap->ga_len; ++i) + vim_free(stp[i].st_word); + gap->ga_len = keep; + return stp[keep - 1].st_score; + } + return maxscore; +} + +#if defined(FEAT_EVAL) || defined(PROTO) +/* + * Soundfold a string, for soundfold(). + * Result is in allocated memory, NULL for an error. + */ + char_u * +eval_soundfold(char_u *word) +{ + langp_T *lp; + char_u sound[MAXWLEN]; + int lpi; + + if (curwin->w_p_spell && *curwin->w_s->b_p_spl != NUL) + /* Use the sound-folding of the first language that supports it. */ + for (lpi = 0; lpi < curwin->w_s->b_langp.ga_len; ++lpi) + { + lp = LANGP_ENTRY(curwin->w_s->b_langp, lpi); + if (lp->lp_slang->sl_sal.ga_len > 0) + { + /* soundfold the word */ + spell_soundfold(lp->lp_slang, word, FALSE, sound); + return vim_strsave(sound); + } + } + + /* No language with sound folding, return word as-is. */ + return vim_strsave(word); +} +#endif + +/* + * Turn "inword" into its sound-a-like equivalent in "res[MAXWLEN]". + * + * There are many ways to turn a word into a sound-a-like representation. The + * oldest is Soundex (1918!). A nice overview can be found in "Approximate + * swedish name matching - survey and test of different algorithms" by Klas + * Erikson. + * + * We support two methods: + * 1. SOFOFROM/SOFOTO do a simple character mapping. + * 2. SAL items define a more advanced sound-folding (and much slower). + */ + void +spell_soundfold( + slang_T *slang, + char_u *inword, + int folded, /* "inword" is already case-folded */ + char_u *res) +{ + char_u fword[MAXWLEN]; + char_u *word; + + if (slang->sl_sofo) + /* SOFOFROM and SOFOTO used */ + spell_soundfold_sofo(slang, inword, res); + else + { + /* SAL items used. Requires the word to be case-folded. */ + if (folded) + word = inword; + else + { + (void)spell_casefold(inword, (int)STRLEN(inword), fword, MAXWLEN); + word = fword; + } + + if (has_mbyte) + spell_soundfold_wsal(slang, word, res); + else + spell_soundfold_sal(slang, word, res); + } +} + +/* + * Perform sound folding of "inword" into "res" according to SOFOFROM and + * SOFOTO lines. + */ + static void +spell_soundfold_sofo(slang_T *slang, char_u *inword, char_u *res) +{ + char_u *s; + int ri = 0; + int c; + + if (has_mbyte) + { + int prevc = 0; + int *ip; + + /* The sl_sal_first[] table contains the translation for chars up to + * 255, sl_sal the rest. */ + for (s = inword; *s != NUL; ) + { + c = mb_cptr2char_adv(&s); + if (enc_utf8 ? utf_class(c) == 0 : VIM_ISWHITE(c)) + c = ' '; + else if (c < 256) + c = slang->sl_sal_first[c]; + else + { + ip = ((int **)slang->sl_sal.ga_data)[c & 0xff]; + if (ip == NULL) /* empty list, can't match */ + c = NUL; + else + for (;;) /* find "c" in the list */ + { + if (*ip == 0) /* not found */ + { + c = NUL; + break; + } + if (*ip == c) /* match! */ + { + c = ip[1]; + break; + } + ip += 2; + } + } + + if (c != NUL && c != prevc) + { + ri += mb_char2bytes(c, res + ri); + if (ri + MB_MAXBYTES > MAXWLEN) + break; + prevc = c; + } + } + } + else + { + /* The sl_sal_first[] table contains the translation. */ + for (s = inword; (c = *s) != NUL; ++s) + { + if (VIM_ISWHITE(c)) + c = ' '; + else + c = slang->sl_sal_first[c]; + if (c != NUL && (ri == 0 || res[ri - 1] != c)) + res[ri++] = c; + } + } + + res[ri] = NUL; +} + + static void +spell_soundfold_sal(slang_T *slang, char_u *inword, char_u *res) +{ + salitem_T *smp; + char_u word[MAXWLEN]; + char_u *s = inword; + char_u *t; + char_u *pf; + int i, j, z; + int reslen; + int n, k = 0; + int z0; + int k0; + int n0; + int c; + int pri; + int p0 = -333; + int c0; + + /* Remove accents, if wanted. We actually remove all non-word characters. + * But keep white space. We need a copy, the word may be changed here. */ + if (slang->sl_rem_accents) + { + t = word; + while (*s != NUL) + { + if (VIM_ISWHITE(*s)) + { + *t++ = ' '; + s = skipwhite(s); + } + else + { + if (spell_iswordp_nmw(s, curwin)) + *t++ = *s; + ++s; + } + } + *t = NUL; + } + else + vim_strncpy(word, s, MAXWLEN - 1); + + smp = (salitem_T *)slang->sl_sal.ga_data; + + /* + * This comes from Aspell phonet.cpp. Converted from C++ to C. + * Changed to keep spaces. + */ + i = reslen = z = 0; + while ((c = word[i]) != NUL) + { + /* Start with the first rule that has the character in the word. */ + n = slang->sl_sal_first[c]; + z0 = 0; + + if (n >= 0) + { + /* check all rules for the same letter */ + for (; (s = smp[n].sm_lead)[0] == c; ++n) + { + /* Quickly skip entries that don't match the word. Most + * entries are less then three chars, optimize for that. */ + k = smp[n].sm_leadlen; + if (k > 1) + { + if (word[i + 1] != s[1]) + continue; + if (k > 2) + { + for (j = 2; j < k; ++j) + if (word[i + j] != s[j]) + break; + if (j < k) + continue; + } + } + + if ((pf = smp[n].sm_oneof) != NULL) + { + /* Check for match with one of the chars in "sm_oneof". */ + while (*pf != NUL && *pf != word[i + k]) + ++pf; + if (*pf == NUL) + continue; + ++k; + } + s = smp[n].sm_rules; + pri = 5; /* default priority */ + + p0 = *s; + k0 = k; + while (*s == '-' && k > 1) + { + k--; + s++; + } + if (*s == '<') + s++; + if (VIM_ISDIGIT(*s)) + { + /* determine priority */ + pri = *s - '0'; + s++; + } + if (*s == '^' && *(s + 1) == '^') + s++; + + if (*s == NUL + || (*s == '^' + && (i == 0 || !(word[i - 1] == ' ' + || spell_iswordp(word + i - 1, curwin))) + && (*(s + 1) != '$' + || (!spell_iswordp(word + i + k0, curwin)))) + || (*s == '$' && i > 0 + && spell_iswordp(word + i - 1, curwin) + && (!spell_iswordp(word + i + k0, curwin)))) + { + /* search for followup rules, if: */ + /* followup and k > 1 and NO '-' in searchstring */ + c0 = word[i + k - 1]; + n0 = slang->sl_sal_first[c0]; + + if (slang->sl_followup && k > 1 && n0 >= 0 + && p0 != '-' && word[i + k] != NUL) + { + /* test follow-up rule for "word[i + k]" */ + for ( ; (s = smp[n0].sm_lead)[0] == c0; ++n0) + { + /* Quickly skip entries that don't match the word. + * */ + k0 = smp[n0].sm_leadlen; + if (k0 > 1) + { + if (word[i + k] != s[1]) + continue; + if (k0 > 2) + { + pf = word + i + k + 1; + for (j = 2; j < k0; ++j) + if (*pf++ != s[j]) + break; + if (j < k0) + continue; + } + } + k0 += k - 1; + + if ((pf = smp[n0].sm_oneof) != NULL) + { + /* Check for match with one of the chars in + * "sm_oneof". */ + while (*pf != NUL && *pf != word[i + k0]) + ++pf; + if (*pf == NUL) + continue; + ++k0; + } + + p0 = 5; + s = smp[n0].sm_rules; + while (*s == '-') + { + /* "k0" gets NOT reduced because + * "if (k0 == k)" */ + s++; + } + if (*s == '<') + s++; + if (VIM_ISDIGIT(*s)) + { + p0 = *s - '0'; + s++; + } + + if (*s == NUL + /* *s == '^' cuts */ + || (*s == '$' + && !spell_iswordp(word + i + k0, + curwin))) + { + if (k0 == k) + /* this is just a piece of the string */ + continue; + + if (p0 < pri) + /* priority too low */ + continue; + /* rule fits; stop search */ + break; + } + } + + if (p0 >= pri && smp[n0].sm_lead[0] == c0) + continue; + } + + /* replace string */ + s = smp[n].sm_to; + if (s == NULL) + s = (char_u *)""; + pf = smp[n].sm_rules; + p0 = (vim_strchr(pf, '<') != NULL) ? 1 : 0; + if (p0 == 1 && z == 0) + { + /* rule with '<' is used */ + if (reslen > 0 && *s != NUL && (res[reslen - 1] == c + || res[reslen - 1] == *s)) + reslen--; + z0 = 1; + z = 1; + k0 = 0; + while (*s != NUL && word[i + k0] != NUL) + { + word[i + k0] = *s; + k0++; + s++; + } + if (k > k0) + STRMOVE(word + i + k0, word + i + k); + + /* new "actual letter" */ + c = word[i]; + } + else + { + /* no '<' rule used */ + i += k - 1; + z = 0; + while (*s != NUL && s[1] != NUL && reslen < MAXWLEN) + { + if (reslen == 0 || res[reslen - 1] != *s) + res[reslen++] = *s; + s++; + } + /* new "actual letter" */ + c = *s; + if (strstr((char *)pf, "^^") != NULL) + { + if (c != NUL) + res[reslen++] = c; + STRMOVE(word, word + i + 1); + i = 0; + z0 = 1; + } + } + break; + } + } + } + else if (VIM_ISWHITE(c)) + { + c = ' '; + k = 1; + } + + if (z0 == 0) + { + if (k && !p0 && reslen < MAXWLEN && c != NUL + && (!slang->sl_collapse || reslen == 0 + || res[reslen - 1] != c)) + /* condense only double letters */ + res[reslen++] = c; + + i++; + z = 0; + k = 0; + } + } + + res[reslen] = NUL; +} + +/* + * Turn "inword" into its sound-a-like equivalent in "res[MAXWLEN]". + * Multi-byte version of spell_soundfold(). + */ + static void +spell_soundfold_wsal(slang_T *slang, char_u *inword, char_u *res) +{ + salitem_T *smp = (salitem_T *)slang->sl_sal.ga_data; + int word[MAXWLEN]; + int wres[MAXWLEN]; + int l; + char_u *s; + int *ws; + char_u *t; + int *pf; + int i, j, z; + int reslen; + int n, k = 0; + int z0; + int k0; + int n0; + int c; + int pri; + int p0 = -333; + int c0; + int did_white = FALSE; + int wordlen; + + + /* + * Convert the multi-byte string to a wide-character string. + * Remove accents, if wanted. We actually remove all non-word characters. + * But keep white space. + */ + wordlen = 0; + for (s = inword; *s != NUL; ) + { + t = s; + c = mb_cptr2char_adv(&s); + if (slang->sl_rem_accents) + { + if (enc_utf8 ? utf_class(c) == 0 : VIM_ISWHITE(c)) + { + if (did_white) + continue; + c = ' '; + did_white = TRUE; + } + else + { + did_white = FALSE; + if (!spell_iswordp_nmw(t, curwin)) + continue; + } + } + word[wordlen++] = c; + } + word[wordlen] = NUL; + + /* + * This algorithm comes from Aspell phonet.cpp. + * Converted from C++ to C. Added support for multi-byte chars. + * Changed to keep spaces. + */ + i = reslen = z = 0; + while ((c = word[i]) != NUL) + { + /* Start with the first rule that has the character in the word. */ + n = slang->sl_sal_first[c & 0xff]; + z0 = 0; + + if (n >= 0) + { + /* Check all rules for the same index byte. + * If c is 0x300 need extra check for the end of the array, as + * (c & 0xff) is NUL. */ + for (; ((ws = smp[n].sm_lead_w)[0] & 0xff) == (c & 0xff) + && ws[0] != NUL; ++n) + { + /* Quickly skip entries that don't match the word. Most + * entries are less then three chars, optimize for that. */ + if (c != ws[0]) + continue; + k = smp[n].sm_leadlen; + if (k > 1) + { + if (word[i + 1] != ws[1]) + continue; + if (k > 2) + { + for (j = 2; j < k; ++j) + if (word[i + j] != ws[j]) + break; + if (j < k) + continue; + } + } + + if ((pf = smp[n].sm_oneof_w) != NULL) + { + /* Check for match with one of the chars in "sm_oneof". */ + while (*pf != NUL && *pf != word[i + k]) + ++pf; + if (*pf == NUL) + continue; + ++k; + } + s = smp[n].sm_rules; + pri = 5; /* default priority */ + + p0 = *s; + k0 = k; + while (*s == '-' && k > 1) + { + k--; + s++; + } + if (*s == '<') + s++; + if (VIM_ISDIGIT(*s)) + { + /* determine priority */ + pri = *s - '0'; + s++; + } + if (*s == '^' && *(s + 1) == '^') + s++; + + if (*s == NUL + || (*s == '^' + && (i == 0 || !(word[i - 1] == ' ' + || spell_iswordp_w(word + i - 1, curwin))) + && (*(s + 1) != '$' + || (!spell_iswordp_w(word + i + k0, curwin)))) + || (*s == '$' && i > 0 + && spell_iswordp_w(word + i - 1, curwin) + && (!spell_iswordp_w(word + i + k0, curwin)))) + { + /* search for followup rules, if: */ + /* followup and k > 1 and NO '-' in searchstring */ + c0 = word[i + k - 1]; + n0 = slang->sl_sal_first[c0 & 0xff]; + + if (slang->sl_followup && k > 1 && n0 >= 0 + && p0 != '-' && word[i + k] != NUL) + { + /* Test follow-up rule for "word[i + k]"; loop over + * all entries with the same index byte. */ + for ( ; ((ws = smp[n0].sm_lead_w)[0] & 0xff) + == (c0 & 0xff); ++n0) + { + /* Quickly skip entries that don't match the word. + */ + if (c0 != ws[0]) + continue; + k0 = smp[n0].sm_leadlen; + if (k0 > 1) + { + if (word[i + k] != ws[1]) + continue; + if (k0 > 2) + { + pf = word + i + k + 1; + for (j = 2; j < k0; ++j) + if (*pf++ != ws[j]) + break; + if (j < k0) + continue; + } + } + k0 += k - 1; + + if ((pf = smp[n0].sm_oneof_w) != NULL) + { + /* Check for match with one of the chars in + * "sm_oneof". */ + while (*pf != NUL && *pf != word[i + k0]) + ++pf; + if (*pf == NUL) + continue; + ++k0; + } + + p0 = 5; + s = smp[n0].sm_rules; + while (*s == '-') + { + /* "k0" gets NOT reduced because + * "if (k0 == k)" */ + s++; + } + if (*s == '<') + s++; + if (VIM_ISDIGIT(*s)) + { + p0 = *s - '0'; + s++; + } + + if (*s == NUL + /* *s == '^' cuts */ + || (*s == '$' + && !spell_iswordp_w(word + i + k0, + curwin))) + { + if (k0 == k) + /* this is just a piece of the string */ + continue; + + if (p0 < pri) + /* priority too low */ + continue; + /* rule fits; stop search */ + break; + } + } + + if (p0 >= pri && (smp[n0].sm_lead_w[0] & 0xff) + == (c0 & 0xff)) + continue; + } + + /* replace string */ + ws = smp[n].sm_to_w; + s = smp[n].sm_rules; + p0 = (vim_strchr(s, '<') != NULL) ? 1 : 0; + if (p0 == 1 && z == 0) + { + /* rule with '<' is used */ + if (reslen > 0 && ws != NULL && *ws != NUL + && (wres[reslen - 1] == c + || wres[reslen - 1] == *ws)) + reslen--; + z0 = 1; + z = 1; + k0 = 0; + if (ws != NULL) + while (*ws != NUL && word[i + k0] != NUL) + { + word[i + k0] = *ws; + k0++; + ws++; + } + if (k > k0) + mch_memmove(word + i + k0, word + i + k, + sizeof(int) * (wordlen - (i + k) + 1)); + + /* new "actual letter" */ + c = word[i]; + } + else + { + /* no '<' rule used */ + i += k - 1; + z = 0; + if (ws != NULL) + while (*ws != NUL && ws[1] != NUL + && reslen < MAXWLEN) + { + if (reslen == 0 || wres[reslen - 1] != *ws) + wres[reslen++] = *ws; + ws++; + } + /* new "actual letter" */ + if (ws == NULL) + c = NUL; + else + c = *ws; + if (strstr((char *)s, "^^") != NULL) + { + if (c != NUL) + wres[reslen++] = c; + mch_memmove(word, word + i + 1, + sizeof(int) * (wordlen - (i + 1) + 1)); + i = 0; + z0 = 1; + } + } + break; + } + } + } + else if (VIM_ISWHITE(c)) + { + c = ' '; + k = 1; + } + + if (z0 == 0) + { + if (k && !p0 && reslen < MAXWLEN && c != NUL + && (!slang->sl_collapse || reslen == 0 + || wres[reslen - 1] != c)) + /* condense only double letters */ + wres[reslen++] = c; + + i++; + z = 0; + k = 0; + } + } + + /* Convert wide characters in "wres" to a multi-byte string in "res". */ + l = 0; + for (n = 0; n < reslen; ++n) + { + l += mb_char2bytes(wres[n], res + l); + if (l + MB_MAXBYTES > MAXWLEN) + break; + } + res[l] = NUL; +} + +/* + * Compute a score for two sound-a-like words. + * This permits up to two inserts/deletes/swaps/etc. to keep things fast. + * Instead of a generic loop we write out the code. That keeps it fast by + * avoiding checks that will not be possible. + */ + static int +soundalike_score( + char_u *goodstart, /* sound-folded good word */ + char_u *badstart) /* sound-folded bad word */ +{ + char_u *goodsound = goodstart; + char_u *badsound = badstart; + int goodlen; + int badlen; + int n; + char_u *pl, *ps; + char_u *pl2, *ps2; + int score = 0; + + /* Adding/inserting "*" at the start (word starts with vowel) shouldn't be + * counted so much, vowels halfway the word aren't counted at all. */ + if ((*badsound == '*' || *goodsound == '*') && *badsound != *goodsound) + { + if ((badsound[0] == NUL && goodsound[1] == NUL) + || (goodsound[0] == NUL && badsound[1] == NUL)) + /* changing word with vowel to word without a sound */ + return SCORE_DEL; + if (badsound[0] == NUL || goodsound[0] == NUL) + /* more than two changes */ + return SCORE_MAXMAX; + + if (badsound[1] == goodsound[1] + || (badsound[1] != NUL + && goodsound[1] != NUL + && badsound[2] == goodsound[2])) + { + /* handle like a substitute */ + } + else + { + score = 2 * SCORE_DEL / 3; + if (*badsound == '*') + ++badsound; + else + ++goodsound; + } + } + + goodlen = (int)STRLEN(goodsound); + badlen = (int)STRLEN(badsound); + + /* Return quickly if the lengths are too different to be fixed by two + * changes. */ + n = goodlen - badlen; + if (n < -2 || n > 2) + return SCORE_MAXMAX; + + if (n > 0) + { + pl = goodsound; /* goodsound is longest */ + ps = badsound; + } + else + { + pl = badsound; /* badsound is longest */ + ps = goodsound; + } + + /* Skip over the identical part. */ + while (*pl == *ps && *pl != NUL) + { + ++pl; + ++ps; + } + + switch (n) + { + case -2: + case 2: + /* + * Must delete two characters from "pl". + */ + ++pl; /* first delete */ + while (*pl == *ps) + { + ++pl; + ++ps; + } + /* strings must be equal after second delete */ + if (STRCMP(pl + 1, ps) == 0) + return score + SCORE_DEL * 2; + + /* Failed to compare. */ + break; + + case -1: + case 1: + /* + * Minimal one delete from "pl" required. + */ + + /* 1: delete */ + pl2 = pl + 1; + ps2 = ps; + while (*pl2 == *ps2) + { + if (*pl2 == NUL) /* reached the end */ + return score + SCORE_DEL; + ++pl2; + ++ps2; + } + + /* 2: delete then swap, then rest must be equal */ + if (pl2[0] == ps2[1] && pl2[1] == ps2[0] + && STRCMP(pl2 + 2, ps2 + 2) == 0) + return score + SCORE_DEL + SCORE_SWAP; + + /* 3: delete then substitute, then the rest must be equal */ + if (STRCMP(pl2 + 1, ps2 + 1) == 0) + return score + SCORE_DEL + SCORE_SUBST; + + /* 4: first swap then delete */ + if (pl[0] == ps[1] && pl[1] == ps[0]) + { + pl2 = pl + 2; /* swap, skip two chars */ + ps2 = ps + 2; + while (*pl2 == *ps2) + { + ++pl2; + ++ps2; + } + /* delete a char and then strings must be equal */ + if (STRCMP(pl2 + 1, ps2) == 0) + return score + SCORE_SWAP + SCORE_DEL; + } + + /* 5: first substitute then delete */ + pl2 = pl + 1; /* substitute, skip one char */ + ps2 = ps + 1; + while (*pl2 == *ps2) + { + ++pl2; + ++ps2; + } + /* delete a char and then strings must be equal */ + if (STRCMP(pl2 + 1, ps2) == 0) + return score + SCORE_SUBST + SCORE_DEL; + + /* Failed to compare. */ + break; + + case 0: + /* + * Lengths are equal, thus changes must result in same length: An + * insert is only possible in combination with a delete. + * 1: check if for identical strings + */ + if (*pl == NUL) + return score; + + /* 2: swap */ + if (pl[0] == ps[1] && pl[1] == ps[0]) + { + pl2 = pl + 2; /* swap, skip two chars */ + ps2 = ps + 2; + while (*pl2 == *ps2) + { + if (*pl2 == NUL) /* reached the end */ + return score + SCORE_SWAP; + ++pl2; + ++ps2; + } + /* 3: swap and swap again */ + if (pl2[0] == ps2[1] && pl2[1] == ps2[0] + && STRCMP(pl2 + 2, ps2 + 2) == 0) + return score + SCORE_SWAP + SCORE_SWAP; + + /* 4: swap and substitute */ + if (STRCMP(pl2 + 1, ps2 + 1) == 0) + return score + SCORE_SWAP + SCORE_SUBST; + } + + /* 5: substitute */ + pl2 = pl + 1; + ps2 = ps + 1; + while (*pl2 == *ps2) + { + if (*pl2 == NUL) /* reached the end */ + return score + SCORE_SUBST; + ++pl2; + ++ps2; + } + + /* 6: substitute and swap */ + if (pl2[0] == ps2[1] && pl2[1] == ps2[0] + && STRCMP(pl2 + 2, ps2 + 2) == 0) + return score + SCORE_SUBST + SCORE_SWAP; + + /* 7: substitute and substitute */ + if (STRCMP(pl2 + 1, ps2 + 1) == 0) + return score + SCORE_SUBST + SCORE_SUBST; + + /* 8: insert then delete */ + pl2 = pl; + ps2 = ps + 1; + while (*pl2 == *ps2) + { + ++pl2; + ++ps2; + } + if (STRCMP(pl2 + 1, ps2) == 0) + return score + SCORE_INS + SCORE_DEL; + + /* 9: delete then insert */ + pl2 = pl + 1; + ps2 = ps; + while (*pl2 == *ps2) + { + ++pl2; + ++ps2; + } + if (STRCMP(pl2, ps2 + 1) == 0) + return score + SCORE_INS + SCORE_DEL; + + /* Failed to compare. */ + break; + } + + return SCORE_MAXMAX; +} + +/* + * Compute the "edit distance" to turn "badword" into "goodword". The less + * deletes/inserts/substitutes/swaps are required the lower the score. + * + * The algorithm is described by Du and Chang, 1992. + * The implementation of the algorithm comes from Aspell editdist.cpp, + * edit_distance(). It has been converted from C++ to C and modified to + * support multi-byte characters. + */ + static int +spell_edit_score( + slang_T *slang, + char_u *badword, + char_u *goodword) +{ + int *cnt; + int badlen, goodlen; /* lengths including NUL */ + int j, i; + int t; + int bc, gc; + int pbc, pgc; + char_u *p; + int wbadword[MAXWLEN]; + int wgoodword[MAXWLEN]; + + if (has_mbyte) + { + /* Get the characters from the multi-byte strings and put them in an + * int array for easy access. */ + for (p = badword, badlen = 0; *p != NUL; ) + wbadword[badlen++] = mb_cptr2char_adv(&p); + wbadword[badlen++] = 0; + for (p = goodword, goodlen = 0; *p != NUL; ) + wgoodword[goodlen++] = mb_cptr2char_adv(&p); + wgoodword[goodlen++] = 0; + } + else + { + badlen = (int)STRLEN(badword) + 1; + goodlen = (int)STRLEN(goodword) + 1; + } + + /* We use "cnt" as an array: CNT(badword_idx, goodword_idx). */ +#define CNT(a, b) cnt[(a) + (b) * (badlen + 1)] + cnt = (int *)lalloc((long_u)(sizeof(int) * (badlen + 1) * (goodlen + 1)), + TRUE); + if (cnt == NULL) + return 0; /* out of memory */ + + CNT(0, 0) = 0; + for (j = 1; j <= goodlen; ++j) + CNT(0, j) = CNT(0, j - 1) + SCORE_INS; + + for (i = 1; i <= badlen; ++i) + { + CNT(i, 0) = CNT(i - 1, 0) + SCORE_DEL; + for (j = 1; j <= goodlen; ++j) + { + if (has_mbyte) + { + bc = wbadword[i - 1]; + gc = wgoodword[j - 1]; + } + else + { + bc = badword[i - 1]; + gc = goodword[j - 1]; + } + if (bc == gc) + CNT(i, j) = CNT(i - 1, j - 1); + else + { + /* Use a better score when there is only a case difference. */ + if (SPELL_TOFOLD(bc) == SPELL_TOFOLD(gc)) + CNT(i, j) = SCORE_ICASE + CNT(i - 1, j - 1); + else + { + /* For a similar character use SCORE_SIMILAR. */ + if (slang != NULL + && slang->sl_has_map + && similar_chars(slang, gc, bc)) + CNT(i, j) = SCORE_SIMILAR + CNT(i - 1, j - 1); + else + CNT(i, j) = SCORE_SUBST + CNT(i - 1, j - 1); + } + + if (i > 1 && j > 1) + { + if (has_mbyte) + { + pbc = wbadword[i - 2]; + pgc = wgoodword[j - 2]; + } + else + { + pbc = badword[i - 2]; + pgc = goodword[j - 2]; + } + if (bc == pgc && pbc == gc) + { + t = SCORE_SWAP + CNT(i - 2, j - 2); + if (t < CNT(i, j)) + CNT(i, j) = t; + } + } + t = SCORE_DEL + CNT(i - 1, j); + if (t < CNT(i, j)) + CNT(i, j) = t; + t = SCORE_INS + CNT(i, j - 1); + if (t < CNT(i, j)) + CNT(i, j) = t; + } + } + } + + i = CNT(badlen - 1, goodlen - 1); + vim_free(cnt); + return i; +} + +typedef struct +{ + int badi; + int goodi; + int score; +} limitscore_T; + +/* + * Like spell_edit_score(), but with a limit on the score to make it faster. + * May return SCORE_MAXMAX when the score is higher than "limit". + * + * This uses a stack for the edits still to be tried. + * The idea comes from Aspell leditdist.cpp. Rewritten in C and added support + * for multi-byte characters. + */ + static int +spell_edit_score_limit( + slang_T *slang, + char_u *badword, + char_u *goodword, + int limit) +{ + limitscore_T stack[10]; /* allow for over 3 * 2 edits */ + int stackidx; + int bi, gi; + int bi2, gi2; + int bc, gc; + int score; + int score_off; + int minscore; + int round; + + /* Multi-byte characters require a bit more work, use a different function + * to avoid testing "has_mbyte" quite often. */ + if (has_mbyte) + return spell_edit_score_limit_w(slang, badword, goodword, limit); + + /* + * The idea is to go from start to end over the words. So long as + * characters are equal just continue, this always gives the lowest score. + * When there is a difference try several alternatives. Each alternative + * increases "score" for the edit distance. Some of the alternatives are + * pushed unto a stack and tried later, some are tried right away. At the + * end of the word the score for one alternative is known. The lowest + * possible score is stored in "minscore". + */ + stackidx = 0; + bi = 0; + gi = 0; + score = 0; + minscore = limit + 1; + + for (;;) + { + /* Skip over an equal part, score remains the same. */ + for (;;) + { + bc = badword[bi]; + gc = goodword[gi]; + if (bc != gc) /* stop at a char that's different */ + break; + if (bc == NUL) /* both words end */ + { + if (score < minscore) + minscore = score; + goto pop; /* do next alternative */ + } + ++bi; + ++gi; + } + + if (gc == NUL) /* goodword ends, delete badword chars */ + { + do + { + if ((score += SCORE_DEL) >= minscore) + goto pop; /* do next alternative */ + } while (badword[++bi] != NUL); + minscore = score; + } + else if (bc == NUL) /* badword ends, insert badword chars */ + { + do + { + if ((score += SCORE_INS) >= minscore) + goto pop; /* do next alternative */ + } while (goodword[++gi] != NUL); + minscore = score; + } + else /* both words continue */ + { + /* If not close to the limit, perform a change. Only try changes + * that may lead to a lower score than "minscore". + * round 0: try deleting a char from badword + * round 1: try inserting a char in badword */ + for (round = 0; round <= 1; ++round) + { + score_off = score + (round == 0 ? SCORE_DEL : SCORE_INS); + if (score_off < minscore) + { + if (score_off + SCORE_EDIT_MIN >= minscore) + { + /* Near the limit, rest of the words must match. We + * can check that right now, no need to push an item + * onto the stack. */ + bi2 = bi + 1 - round; + gi2 = gi + round; + while (goodword[gi2] == badword[bi2]) + { + if (goodword[gi2] == NUL) + { + minscore = score_off; + break; + } + ++bi2; + ++gi2; + } + } + else + { + /* try deleting/inserting a character later */ + stack[stackidx].badi = bi + 1 - round; + stack[stackidx].goodi = gi + round; + stack[stackidx].score = score_off; + ++stackidx; + } + } + } + + if (score + SCORE_SWAP < minscore) + { + /* If swapping two characters makes a match then the + * substitution is more expensive, thus there is no need to + * try both. */ + if (gc == badword[bi + 1] && bc == goodword[gi + 1]) + { + /* Swap two characters, that is: skip them. */ + gi += 2; + bi += 2; + score += SCORE_SWAP; + continue; + } + } + + /* Substitute one character for another which is the same + * thing as deleting a character from both goodword and badword. + * Use a better score when there is only a case difference. */ + if (SPELL_TOFOLD(bc) == SPELL_TOFOLD(gc)) + score += SCORE_ICASE; + else + { + /* For a similar character use SCORE_SIMILAR. */ + if (slang != NULL + && slang->sl_has_map + && similar_chars(slang, gc, bc)) + score += SCORE_SIMILAR; + else + score += SCORE_SUBST; + } + + if (score < minscore) + { + /* Do the substitution. */ + ++gi; + ++bi; + continue; + } + } +pop: + /* + * Get here to try the next alternative, pop it from the stack. + */ + if (stackidx == 0) /* stack is empty, finished */ + break; + + /* pop an item from the stack */ + --stackidx; + gi = stack[stackidx].goodi; + bi = stack[stackidx].badi; + score = stack[stackidx].score; + } + + /* When the score goes over "limit" it may actually be much higher. + * Return a very large number to avoid going below the limit when giving a + * bonus. */ + if (minscore > limit) + return SCORE_MAXMAX; + return minscore; +} + +/* + * Multi-byte version of spell_edit_score_limit(). + * Keep it in sync with the above! + */ + static int +spell_edit_score_limit_w( + slang_T *slang, + char_u *badword, + char_u *goodword, + int limit) +{ + limitscore_T stack[10]; /* allow for over 3 * 2 edits */ + int stackidx; + int bi, gi; + int bi2, gi2; + int bc, gc; + int score; + int score_off; + int minscore; + int round; + char_u *p; + int wbadword[MAXWLEN]; + int wgoodword[MAXWLEN]; + + /* Get the characters from the multi-byte strings and put them in an + * int array for easy access. */ + bi = 0; + for (p = badword; *p != NUL; ) + wbadword[bi++] = mb_cptr2char_adv(&p); + wbadword[bi++] = 0; + gi = 0; + for (p = goodword; *p != NUL; ) + wgoodword[gi++] = mb_cptr2char_adv(&p); + wgoodword[gi++] = 0; + + /* + * The idea is to go from start to end over the words. So long as + * characters are equal just continue, this always gives the lowest score. + * When there is a difference try several alternatives. Each alternative + * increases "score" for the edit distance. Some of the alternatives are + * pushed unto a stack and tried later, some are tried right away. At the + * end of the word the score for one alternative is known. The lowest + * possible score is stored in "minscore". + */ + stackidx = 0; + bi = 0; + gi = 0; + score = 0; + minscore = limit + 1; + + for (;;) + { + /* Skip over an equal part, score remains the same. */ + for (;;) + { + bc = wbadword[bi]; + gc = wgoodword[gi]; + + if (bc != gc) /* stop at a char that's different */ + break; + if (bc == NUL) /* both words end */ + { + if (score < minscore) + minscore = score; + goto pop; /* do next alternative */ + } + ++bi; + ++gi; + } + + if (gc == NUL) /* goodword ends, delete badword chars */ + { + do + { + if ((score += SCORE_DEL) >= minscore) + goto pop; /* do next alternative */ + } while (wbadword[++bi] != NUL); + minscore = score; + } + else if (bc == NUL) /* badword ends, insert badword chars */ + { + do + { + if ((score += SCORE_INS) >= minscore) + goto pop; /* do next alternative */ + } while (wgoodword[++gi] != NUL); + minscore = score; + } + else /* both words continue */ + { + /* If not close to the limit, perform a change. Only try changes + * that may lead to a lower score than "minscore". + * round 0: try deleting a char from badword + * round 1: try inserting a char in badword */ + for (round = 0; round <= 1; ++round) + { + score_off = score + (round == 0 ? SCORE_DEL : SCORE_INS); + if (score_off < minscore) + { + if (score_off + SCORE_EDIT_MIN >= minscore) + { + /* Near the limit, rest of the words must match. We + * can check that right now, no need to push an item + * onto the stack. */ + bi2 = bi + 1 - round; + gi2 = gi + round; + while (wgoodword[gi2] == wbadword[bi2]) + { + if (wgoodword[gi2] == NUL) + { + minscore = score_off; + break; + } + ++bi2; + ++gi2; + } + } + else + { + /* try deleting a character from badword later */ + stack[stackidx].badi = bi + 1 - round; + stack[stackidx].goodi = gi + round; + stack[stackidx].score = score_off; + ++stackidx; + } + } + } + + if (score + SCORE_SWAP < minscore) + { + /* If swapping two characters makes a match then the + * substitution is more expensive, thus there is no need to + * try both. */ + if (gc == wbadword[bi + 1] && bc == wgoodword[gi + 1]) + { + /* Swap two characters, that is: skip them. */ + gi += 2; + bi += 2; + score += SCORE_SWAP; + continue; + } + } + + /* Substitute one character for another which is the same + * thing as deleting a character from both goodword and badword. + * Use a better score when there is only a case difference. */ + if (SPELL_TOFOLD(bc) == SPELL_TOFOLD(gc)) + score += SCORE_ICASE; + else + { + /* For a similar character use SCORE_SIMILAR. */ + if (slang != NULL + && slang->sl_has_map + && similar_chars(slang, gc, bc)) + score += SCORE_SIMILAR; + else + score += SCORE_SUBST; + } + + if (score < minscore) + { + /* Do the substitution. */ + ++gi; + ++bi; + continue; + } + } +pop: + /* + * Get here to try the next alternative, pop it from the stack. + */ + if (stackidx == 0) /* stack is empty, finished */ + break; + + /* pop an item from the stack */ + --stackidx; + gi = stack[stackidx].goodi; + bi = stack[stackidx].badi; + score = stack[stackidx].score; + } + + /* When the score goes over "limit" it may actually be much higher. + * Return a very large number to avoid going below the limit when giving a + * bonus. */ + if (minscore > limit) + return SCORE_MAXMAX; + return minscore; +} + +/* + * ":spellinfo" + */ + void +ex_spellinfo(exarg_T *eap UNUSED) +{ + int lpi; + langp_T *lp; + char_u *p; + + if (no_spell_checking(curwin)) + return; + + msg_start(); + for (lpi = 0; lpi < curwin->w_s->b_langp.ga_len && !got_int; ++lpi) + { + lp = LANGP_ENTRY(curwin->w_s->b_langp, lpi); + msg_puts("file: "); + msg_puts((char *)lp->lp_slang->sl_fname); + msg_putchar('\n'); + p = lp->lp_slang->sl_info; + if (p != NULL) + { + msg_puts((char *)p); + msg_putchar('\n'); + } + } + msg_end(); +} + +#define DUMPFLAG_KEEPCASE 1 /* round 2: keep-case tree */ +#define DUMPFLAG_COUNT 2 /* include word count */ +#define DUMPFLAG_ICASE 4 /* ignore case when finding matches */ +#define DUMPFLAG_ONECAP 8 /* pattern starts with capital */ +#define DUMPFLAG_ALLCAP 16 /* pattern is all capitals */ + +/* + * ":spelldump" + */ + void +ex_spelldump(exarg_T *eap) +{ + char_u *spl; + long dummy; + + if (no_spell_checking(curwin)) + return; + get_option_value((char_u*)"spl", &dummy, &spl, OPT_LOCAL); + + /* Create a new empty buffer in a new window. */ + do_cmdline_cmd((char_u *)"new"); + + /* enable spelling locally in the new window */ + set_option_value((char_u*)"spell", TRUE, (char_u*)"", OPT_LOCAL); + set_option_value((char_u*)"spl", dummy, spl, OPT_LOCAL); + vim_free(spl); + + if (!BUFEMPTY()) + return; + + spell_dump_compl(NULL, 0, NULL, eap->forceit ? DUMPFLAG_COUNT : 0); + + /* Delete the empty line that we started with. */ + if (curbuf->b_ml.ml_line_count > 1) + ml_delete(curbuf->b_ml.ml_line_count, FALSE); + + redraw_later(NOT_VALID); +} + +/* + * Go through all possible words and: + * 1. When "pat" is NULL: dump a list of all words in the current buffer. + * "ic" and "dir" are not used. + * 2. When "pat" is not NULL: add matching words to insert mode completion. + */ + void +spell_dump_compl( + char_u *pat, /* leading part of the word */ + int ic, /* ignore case */ + int *dir, /* direction for adding matches */ + int dumpflags_arg) /* DUMPFLAG_* */ +{ + langp_T *lp; + slang_T *slang; + idx_T arridx[MAXWLEN]; + int curi[MAXWLEN]; + char_u word[MAXWLEN]; + int c; + char_u *byts; + idx_T *idxs; + linenr_T lnum = 0; + int round; + int depth; + int n; + int flags; + char_u *region_names = NULL; /* region names being used */ + int do_region = TRUE; /* dump region names and numbers */ + char_u *p; + int lpi; + int dumpflags = dumpflags_arg; + int patlen; + + /* When ignoring case or when the pattern starts with capital pass this on + * to dump_word(). */ + if (pat != NULL) + { + if (ic) + dumpflags |= DUMPFLAG_ICASE; + else + { + n = captype(pat, NULL); + if (n == WF_ONECAP) + dumpflags |= DUMPFLAG_ONECAP; + else if (n == WF_ALLCAP && (int)STRLEN(pat) > mb_ptr2len(pat)) + dumpflags |= DUMPFLAG_ALLCAP; + } + } + + /* Find out if we can support regions: All languages must support the same + * regions or none at all. */ + for (lpi = 0; lpi < curwin->w_s->b_langp.ga_len; ++lpi) + { + lp = LANGP_ENTRY(curwin->w_s->b_langp, lpi); + p = lp->lp_slang->sl_regions; + if (p[0] != 0) + { + if (region_names == NULL) /* first language with regions */ + region_names = p; + else if (STRCMP(region_names, p) != 0) + { + do_region = FALSE; /* region names are different */ + break; + } + } + } + + if (do_region && region_names != NULL) + { + if (pat == NULL) + { + vim_snprintf((char *)IObuff, IOSIZE, "/regions=%s", region_names); + ml_append(lnum++, IObuff, (colnr_T)0, FALSE); + } + } + else + do_region = FALSE; + + /* + * Loop over all files loaded for the entries in 'spelllang'. + */ + for (lpi = 0; lpi < curwin->w_s->b_langp.ga_len; ++lpi) + { + lp = LANGP_ENTRY(curwin->w_s->b_langp, lpi); + slang = lp->lp_slang; + if (slang->sl_fbyts == NULL) /* reloading failed */ + continue; + + if (pat == NULL) + { + vim_snprintf((char *)IObuff, IOSIZE, "# file: %s", slang->sl_fname); + ml_append(lnum++, IObuff, (colnr_T)0, FALSE); + } + + /* When matching with a pattern and there are no prefixes only use + * parts of the tree that match "pat". */ + if (pat != NULL && slang->sl_pbyts == NULL) + patlen = (int)STRLEN(pat); + else + patlen = -1; + + /* round 1: case-folded tree + * round 2: keep-case tree */ + for (round = 1; round <= 2; ++round) + { + if (round == 1) + { + dumpflags &= ~DUMPFLAG_KEEPCASE; + byts = slang->sl_fbyts; + idxs = slang->sl_fidxs; + } + else + { + dumpflags |= DUMPFLAG_KEEPCASE; + byts = slang->sl_kbyts; + idxs = slang->sl_kidxs; + } + if (byts == NULL) + continue; /* array is empty */ + + depth = 0; + arridx[0] = 0; + curi[0] = 1; + while (depth >= 0 && !got_int + && (pat == NULL || !compl_interrupted)) + { + if (curi[depth] > byts[arridx[depth]]) + { + /* Done all bytes at this node, go up one level. */ + --depth; + line_breakcheck(); + ins_compl_check_keys(50, FALSE); + } + else + { + /* Do one more byte at this node. */ + n = arridx[depth] + curi[depth]; + ++curi[depth]; + c = byts[n]; + if (c == 0) + { + /* End of word, deal with the word. + * Don't use keep-case words in the fold-case tree, + * they will appear in the keep-case tree. + * Only use the word when the region matches. */ + flags = (int)idxs[n]; + if ((round == 2 || (flags & WF_KEEPCAP) == 0) + && (flags & WF_NEEDCOMP) == 0 + && (do_region + || (flags & WF_REGION) == 0 + || (((unsigned)flags >> 16) + & lp->lp_region) != 0)) + { + word[depth] = NUL; + if (!do_region) + flags &= ~WF_REGION; + + /* Dump the basic word if there is no prefix or + * when it's the first one. */ + c = (unsigned)flags >> 24; + if (c == 0 || curi[depth] == 2) + { + dump_word(slang, word, pat, dir, + dumpflags, flags, lnum); + if (pat == NULL) + ++lnum; + } + + /* Apply the prefix, if there is one. */ + if (c != 0) + lnum = dump_prefixes(slang, word, pat, dir, + dumpflags, flags, lnum); + } + } + else + { + /* Normal char, go one level deeper. */ + word[depth++] = c; + arridx[depth] = idxs[n]; + curi[depth] = 1; + + /* Check if this characters matches with the pattern. + * If not skip the whole tree below it. + * Always ignore case here, dump_word() will check + * proper case later. This isn't exactly right when + * length changes for multi-byte characters with + * ignore case... */ + if (depth <= patlen + && MB_STRNICMP(word, pat, depth) != 0) + --depth; + } + } + } + } + } +} + +/* + * Dump one word: apply case modifications and append a line to the buffer. + * When "lnum" is zero add insert mode completion. + */ + static void +dump_word( + slang_T *slang, + char_u *word, + char_u *pat, + int *dir, + int dumpflags, + int wordflags, + linenr_T lnum) +{ + int keepcap = FALSE; + char_u *p; + char_u *tw; + char_u cword[MAXWLEN]; + char_u badword[MAXWLEN + 10]; + int i; + int flags = wordflags; + + if (dumpflags & DUMPFLAG_ONECAP) + flags |= WF_ONECAP; + if (dumpflags & DUMPFLAG_ALLCAP) + flags |= WF_ALLCAP; + + if ((dumpflags & DUMPFLAG_KEEPCASE) == 0 && (flags & WF_CAPMASK) != 0) + { + /* Need to fix case according to "flags". */ + make_case_word(word, cword, flags); + p = cword; + } + else + { + p = word; + if ((dumpflags & DUMPFLAG_KEEPCASE) + && ((captype(word, NULL) & WF_KEEPCAP) == 0 + || (flags & WF_FIXCAP) != 0)) + keepcap = TRUE; + } + tw = p; + + if (pat == NULL) + { + /* Add flags and regions after a slash. */ + if ((flags & (WF_BANNED | WF_RARE | WF_REGION)) || keepcap) + { + STRCPY(badword, p); + STRCAT(badword, "/"); + if (keepcap) + STRCAT(badword, "="); + if (flags & WF_BANNED) + STRCAT(badword, "!"); + else if (flags & WF_RARE) + STRCAT(badword, "?"); + if (flags & WF_REGION) + for (i = 0; i < 7; ++i) + if (flags & (0x10000 << i)) + sprintf((char *)badword + STRLEN(badword), "%d", i + 1); + p = badword; + } + + if (dumpflags & DUMPFLAG_COUNT) + { + hashitem_T *hi; + + /* Include the word count for ":spelldump!". */ + hi = hash_find(&slang->sl_wordcount, tw); + if (!HASHITEM_EMPTY(hi)) + { + vim_snprintf((char *)IObuff, IOSIZE, "%s\t%d", + tw, HI2WC(hi)->wc_count); + p = IObuff; + } + } + + ml_append(lnum, p, (colnr_T)0, FALSE); + } + else if (((dumpflags & DUMPFLAG_ICASE) + ? MB_STRNICMP(p, pat, STRLEN(pat)) == 0 + : STRNCMP(p, pat, STRLEN(pat)) == 0) + && ins_compl_add_infercase(p, (int)STRLEN(p), + p_ic, NULL, *dir, 0) == OK) + /* if dir was BACKWARD then honor it just once */ + *dir = FORWARD; +} + +/* + * For ":spelldump": Find matching prefixes for "word". Prepend each to + * "word" and append a line to the buffer. + * When "lnum" is zero add insert mode completion. + * Return the updated line number. + */ + static linenr_T +dump_prefixes( + slang_T *slang, + char_u *word, /* case-folded word */ + char_u *pat, + int *dir, + int dumpflags, + int flags, /* flags with prefix ID */ + linenr_T startlnum) +{ + idx_T arridx[MAXWLEN]; + int curi[MAXWLEN]; + char_u prefix[MAXWLEN]; + char_u word_up[MAXWLEN]; + int has_word_up = FALSE; + int c; + char_u *byts; + idx_T *idxs; + linenr_T lnum = startlnum; + int depth; + int n; + int len; + int i; + + /* If the word starts with a lower-case letter make the word with an + * upper-case letter in word_up[]. */ + c = PTR2CHAR(word); + if (SPELL_TOUPPER(c) != c) + { + onecap_copy(word, word_up, TRUE); + has_word_up = TRUE; + } + + byts = slang->sl_pbyts; + idxs = slang->sl_pidxs; + if (byts != NULL) /* array not is empty */ + { + /* + * Loop over all prefixes, building them byte-by-byte in prefix[]. + * When at the end of a prefix check that it supports "flags". + */ + depth = 0; + arridx[0] = 0; + curi[0] = 1; + while (depth >= 0 && !got_int) + { + n = arridx[depth]; + len = byts[n]; + if (curi[depth] > len) + { + /* Done all bytes at this node, go up one level. */ + --depth; + line_breakcheck(); + } + else + { + /* Do one more byte at this node. */ + n += curi[depth]; + ++curi[depth]; + c = byts[n]; + if (c == 0) + { + /* End of prefix, find out how many IDs there are. */ + for (i = 1; i < len; ++i) + if (byts[n + i] != 0) + break; + curi[depth] += i - 1; + + c = valid_word_prefix(i, n, flags, word, slang, FALSE); + if (c != 0) + { + vim_strncpy(prefix + depth, word, MAXWLEN - depth - 1); + dump_word(slang, prefix, pat, dir, dumpflags, + (c & WF_RAREPFX) ? (flags | WF_RARE) + : flags, lnum); + if (lnum != 0) + ++lnum; + } + + /* Check for prefix that matches the word when the + * first letter is upper-case, but only if the prefix has + * a condition. */ + if (has_word_up) + { + c = valid_word_prefix(i, n, flags, word_up, slang, + TRUE); + if (c != 0) + { + vim_strncpy(prefix + depth, word_up, + MAXWLEN - depth - 1); + dump_word(slang, prefix, pat, dir, dumpflags, + (c & WF_RAREPFX) ? (flags | WF_RARE) + : flags, lnum); + if (lnum != 0) + ++lnum; + } + } + } + else + { + /* Normal char, go one level deeper. */ + prefix[depth++] = c; + arridx[depth] = idxs[n]; + curi[depth] = 1; + } + } + } + } + + return lnum; +} + +/* + * Move "p" to the end of word "start". + * Uses the spell-checking word characters. + */ + char_u * +spell_to_word_end(char_u *start, win_T *win) +{ + char_u *p = start; + + while (*p != NUL && spell_iswordp(p, win)) + MB_PTR_ADV(p); + return p; +} + +#if defined(FEAT_INS_EXPAND) || defined(PROTO) +/* + * For Insert mode completion CTRL-X s: + * Find start of the word in front of column "startcol". + * We don't check if it is badly spelled, with completion we can only change + * the word in front of the cursor. + * Returns the column number of the word. + */ + int +spell_word_start(int startcol) +{ + char_u *line; + char_u *p; + int col = 0; + + if (no_spell_checking(curwin)) + return startcol; + + /* Find a word character before "startcol". */ + line = ml_get_curline(); + for (p = line + startcol; p > line; ) + { + MB_PTR_BACK(line, p); + if (spell_iswordp_nmw(p, curwin)) + break; + } + + /* Go back to start of the word. */ + while (p > line) + { + col = (int)(p - line); + MB_PTR_BACK(line, p); + if (!spell_iswordp(p, curwin)) + break; + col = 0; + } + + return col; +} + +/* + * Need to check for 'spellcapcheck' now, the word is removed before + * expand_spelling() is called. Therefore the ugly global variable. + */ +static int spell_expand_need_cap; + + void +spell_expand_check_cap(colnr_T col) +{ + spell_expand_need_cap = check_need_cap(curwin->w_cursor.lnum, col); +} + +/* + * Get list of spelling suggestions. + * Used for Insert mode completion CTRL-X ?. + * Returns the number of matches. The matches are in "matchp[]", array of + * allocated strings. + */ + int +expand_spelling( + linenr_T lnum UNUSED, + char_u *pat, + char_u ***matchp) +{ + garray_T ga; + + spell_suggest_list(&ga, pat, 100, spell_expand_need_cap, TRUE); + *matchp = ga.ga_data; + return ga.ga_len; +} +#endif + +#endif /* FEAT_SPELL */ |