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Diffstat (limited to '')
| -rw-r--r-- | src/getchar.c | 5323 |
1 files changed, 5323 insertions, 0 deletions
diff --git a/src/getchar.c b/src/getchar.c new file mode 100644 index 0000000..fe74dbf --- /dev/null +++ b/src/getchar.c @@ -0,0 +1,5323 @@ +/* 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. + */ + +/* + * getchar.c + * + * functions related with getting a character from the user/mapping/redo/... + * + * manipulations with redo buffer and stuff buffer + * mappings and abbreviations + */ + +#include "vim.h" + +/* + * These buffers are used for storing: + * - stuffed characters: A command that is translated into another command. + * - redo characters: will redo the last change. + * - recorded characters: for the "q" command. + * + * The bytes are stored like in the typeahead buffer: + * - K_SPECIAL introduces a special key (two more bytes follow). A literal + * K_SPECIAL is stored as K_SPECIAL KS_SPECIAL KE_FILLER. + * - CSI introduces a GUI termcap code (also when gui.in_use is FALSE, + * otherwise switching the GUI on would make mappings invalid). + * A literal CSI is stored as CSI KS_EXTRA KE_CSI. + * These translations are also done on multi-byte characters! + * + * Escaping CSI bytes is done by the system-specific input functions, called + * by ui_inchar(). + * Escaping K_SPECIAL is done by inchar(). + * Un-escaping is done by vgetc(). + */ + +#define MINIMAL_SIZE 20 /* minimal size for b_str */ + +static buffheader_T redobuff = {{NULL, {NUL}}, NULL, 0, 0}; +static buffheader_T old_redobuff = {{NULL, {NUL}}, NULL, 0, 0}; +static buffheader_T recordbuff = {{NULL, {NUL}}, NULL, 0, 0}; + +static int typeahead_char = 0; /* typeahead char that's not flushed */ + +/* + * when block_redo is TRUE redo buffer will not be changed + * used by edit() to repeat insertions and 'V' command for redoing + */ +static int block_redo = FALSE; + +/* + * Make a hash value for a mapping. + * "mode" is the lower 4 bits of the State for the mapping. + * "c1" is the first character of the "lhs". + * Returns a value between 0 and 255, index in maphash. + * Put Normal/Visual mode mappings mostly separately from Insert/Cmdline mode. + */ +#define MAP_HASH(mode, c1) (((mode) & (NORMAL + VISUAL + SELECTMODE + OP_PENDING + TERMINAL)) ? (c1) : ((c1) ^ 0x80)) + +/* + * Each mapping is put in one of the 256 hash lists, to speed up finding it. + */ +static mapblock_T *(maphash[256]); +static int maphash_valid = FALSE; + +/* + * List used for abbreviations. + */ +static mapblock_T *first_abbr = NULL; /* first entry in abbrlist */ + +static int KeyNoremap = 0; /* remapping flags */ + +/* + * Variables used by vgetorpeek() and flush_buffers(). + * + * typebuf.tb_buf[] contains all characters that are not consumed yet. + * typebuf.tb_buf[typebuf.tb_off] is the first valid character. + * typebuf.tb_buf[typebuf.tb_off + typebuf.tb_len - 1] is the last valid char. + * typebuf.tb_buf[typebuf.tb_off + typebuf.tb_len] must be NUL. + * The head of the buffer may contain the result of mappings, abbreviations + * and @a commands. The length of this part is typebuf.tb_maplen. + * typebuf.tb_silent is the part where <silent> applies. + * After the head are characters that come from the terminal. + * typebuf.tb_no_abbr_cnt is the number of characters in typebuf.tb_buf that + * should not be considered for abbreviations. + * Some parts of typebuf.tb_buf may not be mapped. These parts are remembered + * in typebuf.tb_noremap[], which is the same length as typebuf.tb_buf and + * contains RM_NONE for the characters that are not to be remapped. + * typebuf.tb_noremap[typebuf.tb_off] is the first valid flag. + * (typebuf has been put in globals.h, because check_termcode() needs it). + */ +#define RM_YES 0 /* tb_noremap: remap */ +#define RM_NONE 1 /* tb_noremap: don't remap */ +#define RM_SCRIPT 2 /* tb_noremap: remap local script mappings */ +#define RM_ABBR 4 /* tb_noremap: don't remap, do abbrev. */ + +/* typebuf.tb_buf has three parts: room in front (for result of mappings), the + * middle for typeahead and room for new characters (which needs to be 3 * + * MAXMAPLEN) for the Amiga). + */ +#define TYPELEN_INIT (5 * (MAXMAPLEN + 3)) +static char_u typebuf_init[TYPELEN_INIT]; /* initial typebuf.tb_buf */ +static char_u noremapbuf_init[TYPELEN_INIT]; /* initial typebuf.tb_noremap */ + +static int last_recorded_len = 0; /* number of last recorded chars */ + +static int read_readbuf(buffheader_T *buf, int advance); +static void init_typebuf(void); +static void may_sync_undo(void); +static void closescript(void); +static int vgetorpeek(int); +static void map_free(mapblock_T **); +static void validate_maphash(void); +static void showmap(mapblock_T *mp, int local); +static int inchar(char_u *buf, int maxlen, long wait_time); +#ifdef FEAT_EVAL +static char_u *eval_map_expr(char_u *str, int c); +#endif + +/* + * Free and clear a buffer. + */ + void +free_buff(buffheader_T *buf) +{ + buffblock_T *p, *np; + + for (p = buf->bh_first.b_next; p != NULL; p = np) + { + np = p->b_next; + vim_free(p); + } + buf->bh_first.b_next = NULL; +} + +/* + * Return the contents of a buffer as a single string. + * K_SPECIAL and CSI in the returned string are escaped. + */ + static char_u * +get_buffcont( + buffheader_T *buffer, + int dozero) /* count == zero is not an error */ +{ + long_u count = 0; + char_u *p = NULL; + char_u *p2; + char_u *str; + buffblock_T *bp; + + /* compute the total length of the string */ + for (bp = buffer->bh_first.b_next; bp != NULL; bp = bp->b_next) + count += (long_u)STRLEN(bp->b_str); + + if ((count || dozero) && (p = lalloc(count + 1, TRUE)) != NULL) + { + p2 = p; + for (bp = buffer->bh_first.b_next; bp != NULL; bp = bp->b_next) + for (str = bp->b_str; *str; ) + *p2++ = *str++; + *p2 = NUL; + } + return (p); +} + +/* + * Return the contents of the record buffer as a single string + * and clear the record buffer. + * K_SPECIAL and CSI in the returned string are escaped. + */ + char_u * +get_recorded(void) +{ + char_u *p; + size_t len; + + p = get_buffcont(&recordbuff, TRUE); + free_buff(&recordbuff); + + /* + * Remove the characters that were added the last time, these must be the + * (possibly mapped) characters that stopped the recording. + */ + len = STRLEN(p); + if ((int)len >= last_recorded_len) + { + len -= last_recorded_len; + p[len] = NUL; + } + + /* + * When stopping recording from Insert mode with CTRL-O q, also remove the + * CTRL-O. + */ + if (len > 0 && restart_edit != 0 && p[len - 1] == Ctrl_O) + p[len - 1] = NUL; + + return (p); +} + +/* + * Return the contents of the redo buffer as a single string. + * K_SPECIAL and CSI in the returned string are escaped. + */ + char_u * +get_inserted(void) +{ + return get_buffcont(&redobuff, FALSE); +} + +/* + * Add string "s" after the current block of buffer "buf". + * K_SPECIAL and CSI should have been escaped already. + */ + static void +add_buff( + buffheader_T *buf, + char_u *s, + long slen) /* length of "s" or -1 */ +{ + buffblock_T *p; + long_u len; + + if (slen < 0) + slen = (long)STRLEN(s); + if (slen == 0) /* don't add empty strings */ + return; + + if (buf->bh_first.b_next == NULL) /* first add to list */ + { + buf->bh_space = 0; + buf->bh_curr = &(buf->bh_first); + } + else if (buf->bh_curr == NULL) /* buffer has already been read */ + { + iemsg(_("E222: Add to read buffer")); + return; + } + else if (buf->bh_index != 0) + mch_memmove(buf->bh_first.b_next->b_str, + buf->bh_first.b_next->b_str + buf->bh_index, + STRLEN(buf->bh_first.b_next->b_str + buf->bh_index) + 1); + buf->bh_index = 0; + + if (buf->bh_space >= (int)slen) + { + len = (long_u)STRLEN(buf->bh_curr->b_str); + vim_strncpy(buf->bh_curr->b_str + len, s, (size_t)slen); + buf->bh_space -= slen; + } + else + { + if (slen < MINIMAL_SIZE) + len = MINIMAL_SIZE; + else + len = slen; + p = (buffblock_T *)lalloc((long_u)(sizeof(buffblock_T) + len), + TRUE); + if (p == NULL) + return; /* no space, just forget it */ + buf->bh_space = (int)(len - slen); + vim_strncpy(p->b_str, s, (size_t)slen); + + p->b_next = buf->bh_curr->b_next; + buf->bh_curr->b_next = p; + buf->bh_curr = p; + } + return; +} + +/* + * Add number "n" to buffer "buf". + */ + static void +add_num_buff(buffheader_T *buf, long n) +{ + char_u number[32]; + + sprintf((char *)number, "%ld", n); + add_buff(buf, number, -1L); +} + +/* + * Add character 'c' to buffer "buf". + * Translates special keys, NUL, CSI, K_SPECIAL and multibyte characters. + */ + static void +add_char_buff(buffheader_T *buf, int c) +{ + char_u bytes[MB_MAXBYTES + 1]; + int len; + int i; + char_u temp[4]; + + if (IS_SPECIAL(c)) + len = 1; + else + len = (*mb_char2bytes)(c, bytes); + for (i = 0; i < len; ++i) + { + if (!IS_SPECIAL(c)) + c = bytes[i]; + + if (IS_SPECIAL(c) || c == K_SPECIAL || c == NUL) + { + /* translate special key code into three byte sequence */ + temp[0] = K_SPECIAL; + temp[1] = K_SECOND(c); + temp[2] = K_THIRD(c); + temp[3] = NUL; + } +#ifdef FEAT_GUI + else if (c == CSI) + { + /* Translate a CSI to a CSI - KS_EXTRA - KE_CSI sequence */ + temp[0] = CSI; + temp[1] = KS_EXTRA; + temp[2] = (int)KE_CSI; + temp[3] = NUL; + } +#endif + else + { + temp[0] = c; + temp[1] = NUL; + } + add_buff(buf, temp, -1L); + } +} + +/* First read ahead buffer. Used for translated commands. */ +static buffheader_T readbuf1 = {{NULL, {NUL}}, NULL, 0, 0}; + +/* Second read ahead buffer. Used for redo. */ +static buffheader_T readbuf2 = {{NULL, {NUL}}, NULL, 0, 0}; + +/* + * Get one byte from the read buffers. Use readbuf1 one first, use readbuf2 + * if that one is empty. + * If advance == TRUE go to the next char. + * No translation is done K_SPECIAL and CSI are escaped. + */ + static int +read_readbuffers(int advance) +{ + int c; + + c = read_readbuf(&readbuf1, advance); + if (c == NUL) + c = read_readbuf(&readbuf2, advance); + return c; +} + + static int +read_readbuf(buffheader_T *buf, int advance) +{ + char_u c; + buffblock_T *curr; + + if (buf->bh_first.b_next == NULL) /* buffer is empty */ + return NUL; + + curr = buf->bh_first.b_next; + c = curr->b_str[buf->bh_index]; + + if (advance) + { + if (curr->b_str[++buf->bh_index] == NUL) + { + buf->bh_first.b_next = curr->b_next; + vim_free(curr); + buf->bh_index = 0; + } + } + return c; +} + +/* + * Prepare the read buffers for reading (if they contain something). + */ + static void +start_stuff(void) +{ + if (readbuf1.bh_first.b_next != NULL) + { + readbuf1.bh_curr = &(readbuf1.bh_first); + readbuf1.bh_space = 0; + } + if (readbuf2.bh_first.b_next != NULL) + { + readbuf2.bh_curr = &(readbuf2.bh_first); + readbuf2.bh_space = 0; + } +} + +/* + * Return TRUE if the stuff buffer is empty. + */ + int +stuff_empty(void) +{ + return (readbuf1.bh_first.b_next == NULL + && readbuf2.bh_first.b_next == NULL); +} + +#if defined(FEAT_EVAL) || defined(PROTO) +/* + * Return TRUE if readbuf1 is empty. There may still be redo characters in + * redbuf2. + */ + int +readbuf1_empty(void) +{ + return (readbuf1.bh_first.b_next == NULL); +} +#endif + +/* + * Set a typeahead character that won't be flushed. + */ + void +typeahead_noflush(int c) +{ + typeahead_char = c; +} + +/* + * Remove the contents of the stuff buffer and the mapped characters in the + * typeahead buffer (used in case of an error). If "flush_typeahead" is true, + * flush all typeahead characters (used when interrupted by a CTRL-C). + */ + void +flush_buffers(flush_buffers_T flush_typeahead) +{ + init_typebuf(); + + start_stuff(); + while (read_readbuffers(TRUE) != NUL) + ; + + if (flush_typeahead == FLUSH_MINIMAL) + { + // remove mapped characters at the start only + typebuf.tb_off += typebuf.tb_maplen; + typebuf.tb_len -= typebuf.tb_maplen; + } + else + { + // remove typeahead + if (flush_typeahead == FLUSH_INPUT) + // We have to get all characters, because we may delete the first + // part of an escape sequence. In an xterm we get one char at a + // time and we have to get them all. + while (inchar(typebuf.tb_buf, typebuf.tb_buflen - 1, 10L) != 0) + ; + typebuf.tb_off = MAXMAPLEN; + typebuf.tb_len = 0; +#if defined(FEAT_CLIENTSERVER) || defined(FEAT_EVAL) + /* Reset the flag that text received from a client or from feedkeys() + * was inserted in the typeahead buffer. */ + typebuf_was_filled = FALSE; +#endif + } + typebuf.tb_maplen = 0; + typebuf.tb_silent = 0; + cmd_silent = FALSE; + typebuf.tb_no_abbr_cnt = 0; +} + +/* + * The previous contents of the redo buffer is kept in old_redobuffer. + * This is used for the CTRL-O <.> command in insert mode. + */ + void +ResetRedobuff(void) +{ + if (!block_redo) + { + free_buff(&old_redobuff); + old_redobuff = redobuff; + redobuff.bh_first.b_next = NULL; + } +} + +/* + * Discard the contents of the redo buffer and restore the previous redo + * buffer. + */ + void +CancelRedo(void) +{ + if (!block_redo) + { + free_buff(&redobuff); + redobuff = old_redobuff; + old_redobuff.bh_first.b_next = NULL; + start_stuff(); + while (read_readbuffers(TRUE) != NUL) + ; + } +} + +/* + * Save redobuff and old_redobuff to save_redobuff and save_old_redobuff. + * Used before executing autocommands and user functions. + */ + void +saveRedobuff(save_redo_T *save_redo) +{ + char_u *s; + + save_redo->sr_redobuff = redobuff; + redobuff.bh_first.b_next = NULL; + save_redo->sr_old_redobuff = old_redobuff; + old_redobuff.bh_first.b_next = NULL; + + /* Make a copy, so that ":normal ." in a function works. */ + s = get_buffcont(&save_redo->sr_redobuff, FALSE); + if (s != NULL) + { + add_buff(&redobuff, s, -1L); + vim_free(s); + } +} + +/* + * Restore redobuff and old_redobuff from save_redobuff and save_old_redobuff. + * Used after executing autocommands and user functions. + */ + void +restoreRedobuff(save_redo_T *save_redo) +{ + free_buff(&redobuff); + redobuff = save_redo->sr_redobuff; + free_buff(&old_redobuff); + old_redobuff = save_redo->sr_old_redobuff; +} + +/* + * Append "s" to the redo buffer. + * K_SPECIAL and CSI should already have been escaped. + */ + void +AppendToRedobuff(char_u *s) +{ + if (!block_redo) + add_buff(&redobuff, s, -1L); +} + +/* + * Append to Redo buffer literally, escaping special characters with CTRL-V. + * K_SPECIAL and CSI are escaped as well. + */ + void +AppendToRedobuffLit( + char_u *str, + int len) /* length of "str" or -1 for up to the NUL */ +{ + char_u *s = str; + int c; + char_u *start; + + if (block_redo) + return; + + while (len < 0 ? *s != NUL : s - str < len) + { + /* Put a string of normal characters in the redo buffer (that's + * faster). */ + start = s; + while (*s >= ' ' +#ifndef EBCDIC + && *s < DEL /* EBCDIC: all chars above space are normal */ +#endif + && (len < 0 || s - str < len)) + ++s; + + /* Don't put '0' or '^' as last character, just in case a CTRL-D is + * typed next. */ + if (*s == NUL && (s[-1] == '0' || s[-1] == '^')) + --s; + if (s > start) + add_buff(&redobuff, start, (long)(s - start)); + + if (*s == NUL || (len >= 0 && s - str >= len)) + break; + + /* Handle a special or multibyte character. */ + if (has_mbyte) + /* Handle composing chars separately. */ + c = mb_cptr2char_adv(&s); + else + c = *s++; + if (c < ' ' || c == DEL || (*s == NUL && (c == '0' || c == '^'))) + add_char_buff(&redobuff, Ctrl_V); + + /* CTRL-V '0' must be inserted as CTRL-V 048 (EBCDIC: xf0) */ + if (*s == NUL && c == '0') +#ifdef EBCDIC + add_buff(&redobuff, (char_u *)"xf0", 3L); +#else + add_buff(&redobuff, (char_u *)"048", 3L); +#endif + else + add_char_buff(&redobuff, c); + } +} + +/* + * Append a character to the redo buffer. + * Translates special keys, NUL, CSI, K_SPECIAL and multibyte characters. + */ + void +AppendCharToRedobuff(int c) +{ + if (!block_redo) + add_char_buff(&redobuff, c); +} + +/* + * Append a number to the redo buffer. + */ + void +AppendNumberToRedobuff(long n) +{ + if (!block_redo) + add_num_buff(&redobuff, n); +} + +/* + * Append string "s" to the stuff buffer. + * CSI and K_SPECIAL must already have been escaped. + */ + void +stuffReadbuff(char_u *s) +{ + add_buff(&readbuf1, s, -1L); +} + +/* + * Append string "s" to the redo stuff buffer. + * CSI and K_SPECIAL must already have been escaped. + */ + void +stuffRedoReadbuff(char_u *s) +{ + add_buff(&readbuf2, s, -1L); +} + + void +stuffReadbuffLen(char_u *s, long len) +{ + add_buff(&readbuf1, s, len); +} + +#if defined(FEAT_EVAL) || defined(PROTO) +/* + * Stuff "s" into the stuff buffer, leaving special key codes unmodified and + * escaping other K_SPECIAL and CSI bytes. + * Change CR, LF and ESC into a space. + */ + void +stuffReadbuffSpec(char_u *s) +{ + int c; + + while (*s != NUL) + { + if (*s == K_SPECIAL && s[1] != NUL && s[2] != NUL) + { + /* Insert special key literally. */ + stuffReadbuffLen(s, 3L); + s += 3; + } + else + { + c = mb_ptr2char_adv(&s); + if (c == CAR || c == NL || c == ESC) + c = ' '; + stuffcharReadbuff(c); + } + } +} +#endif + +/* + * Append a character to the stuff buffer. + * Translates special keys, NUL, CSI, K_SPECIAL and multibyte characters. + */ + void +stuffcharReadbuff(int c) +{ + add_char_buff(&readbuf1, c); +} + +/* + * Append a number to the stuff buffer. + */ + void +stuffnumReadbuff(long n) +{ + add_num_buff(&readbuf1, n); +} + +/* + * Read a character from the redo buffer. Translates K_SPECIAL, CSI and + * multibyte characters. + * The redo buffer is left as it is. + * If init is TRUE, prepare for redo, return FAIL if nothing to redo, OK + * otherwise. + * If old is TRUE, use old_redobuff instead of redobuff. + */ + static int +read_redo(int init, int old_redo) +{ + static buffblock_T *bp; + static char_u *p; + int c; + int n; + char_u buf[MB_MAXBYTES + 1]; + int i; + + if (init) + { + if (old_redo) + bp = old_redobuff.bh_first.b_next; + else + bp = redobuff.bh_first.b_next; + if (bp == NULL) + return FAIL; + p = bp->b_str; + return OK; + } + if ((c = *p) != NUL) + { + /* Reverse the conversion done by add_char_buff() */ + /* For a multi-byte character get all the bytes and return the + * converted character. */ + if (has_mbyte && (c != K_SPECIAL || p[1] == KS_SPECIAL)) + n = MB_BYTE2LEN_CHECK(c); + else + n = 1; + for (i = 0; ; ++i) + { + if (c == K_SPECIAL) /* special key or escaped K_SPECIAL */ + { + c = TO_SPECIAL(p[1], p[2]); + p += 2; + } +#ifdef FEAT_GUI + if (c == CSI) /* escaped CSI */ + p += 2; +#endif + if (*++p == NUL && bp->b_next != NULL) + { + bp = bp->b_next; + p = bp->b_str; + } + buf[i] = c; + if (i == n - 1) /* last byte of a character */ + { + if (n != 1) + c = (*mb_ptr2char)(buf); + break; + } + c = *p; + if (c == NUL) /* cannot happen? */ + break; + } + } + + return c; +} + +/* + * Copy the rest of the redo buffer into the stuff buffer (in a slow way). + * If old_redo is TRUE, use old_redobuff instead of redobuff. + * The escaped K_SPECIAL and CSI are copied without translation. + */ + static void +copy_redo(int old_redo) +{ + int c; + + while ((c = read_redo(FALSE, old_redo)) != NUL) + add_char_buff(&readbuf2, c); +} + +/* + * Stuff the redo buffer into readbuf2. + * Insert the redo count into the command. + * If "old_redo" is TRUE, the last but one command is repeated + * instead of the last command (inserting text). This is used for + * CTRL-O <.> in insert mode + * + * return FAIL for failure, OK otherwise + */ + int +start_redo(long count, int old_redo) +{ + int c; + + /* init the pointers; return if nothing to redo */ + if (read_redo(TRUE, old_redo) == FAIL) + return FAIL; + + c = read_redo(FALSE, old_redo); + + /* copy the buffer name, if present */ + if (c == '"') + { + add_buff(&readbuf2, (char_u *)"\"", 1L); + c = read_redo(FALSE, old_redo); + + /* if a numbered buffer is used, increment the number */ + if (c >= '1' && c < '9') + ++c; + add_char_buff(&readbuf2, c); + + /* the expression register should be re-evaluated */ + if (c == '=') + { + add_char_buff(&readbuf2, CAR); + cmd_silent = TRUE; + } + + c = read_redo(FALSE, old_redo); + } + + if (c == 'v') /* redo Visual */ + { + VIsual = curwin->w_cursor; + VIsual_active = TRUE; + VIsual_select = FALSE; + VIsual_reselect = TRUE; + redo_VIsual_busy = TRUE; + c = read_redo(FALSE, old_redo); + } + + /* try to enter the count (in place of a previous count) */ + if (count) + { + while (VIM_ISDIGIT(c)) /* skip "old" count */ + c = read_redo(FALSE, old_redo); + add_num_buff(&readbuf2, count); + } + + /* copy from the redo buffer into the stuff buffer */ + add_char_buff(&readbuf2, c); + copy_redo(old_redo); + return OK; +} + +/* + * Repeat the last insert (R, o, O, a, A, i or I command) by stuffing + * the redo buffer into readbuf2. + * return FAIL for failure, OK otherwise + */ + int +start_redo_ins(void) +{ + int c; + + if (read_redo(TRUE, FALSE) == FAIL) + return FAIL; + start_stuff(); + + /* skip the count and the command character */ + while ((c = read_redo(FALSE, FALSE)) != NUL) + { + if (vim_strchr((char_u *)"AaIiRrOo", c) != NULL) + { + if (c == 'O' || c == 'o') + add_buff(&readbuf2, NL_STR, -1L); + break; + } + } + + /* copy the typed text from the redo buffer into the stuff buffer */ + copy_redo(FALSE); + block_redo = TRUE; + return OK; +} + + void +stop_redo_ins(void) +{ + block_redo = FALSE; +} + +/* + * Initialize typebuf.tb_buf to point to typebuf_init. + * alloc() cannot be used here: In out-of-memory situations it would + * be impossible to type anything. + */ + static void +init_typebuf(void) +{ + if (typebuf.tb_buf == NULL) + { + typebuf.tb_buf = typebuf_init; + typebuf.tb_noremap = noremapbuf_init; + typebuf.tb_buflen = TYPELEN_INIT; + typebuf.tb_len = 0; + typebuf.tb_off = MAXMAPLEN + 4; + typebuf.tb_change_cnt = 1; + } +} + +/* + * Insert a string in position 'offset' in the typeahead buffer (for "@r" + * and ":normal" command, vgetorpeek() and check_termcode()). + * + * If noremap is REMAP_YES, new string can be mapped again. + * If noremap is REMAP_NONE, new string cannot be mapped again. + * If noremap is REMAP_SKIP, fist char of new string cannot be mapped again, + * but abbreviations are allowed. + * If noremap is REMAP_SCRIPT, new string cannot be mapped again, except for + * script-local mappings. + * If noremap is > 0, that many characters of the new string cannot be mapped. + * + * If nottyped is TRUE, the string does not return KeyTyped (don't use when + * offset is non-zero!). + * + * If silent is TRUE, cmd_silent is set when the characters are obtained. + * + * return FAIL for failure, OK otherwise + */ + int +ins_typebuf( + char_u *str, + int noremap, + int offset, + int nottyped, + int silent) +{ + char_u *s1, *s2; + int newlen; + int addlen; + int i; + int newoff; + int val; + int nrm; + + init_typebuf(); + if (++typebuf.tb_change_cnt == 0) + typebuf.tb_change_cnt = 1; + + addlen = (int)STRLEN(str); + + if (offset == 0 && addlen <= typebuf.tb_off) + { + /* + * Easy case: there is room in front of typebuf.tb_buf[typebuf.tb_off] + */ + typebuf.tb_off -= addlen; + mch_memmove(typebuf.tb_buf + typebuf.tb_off, str, (size_t)addlen); + } + else if (typebuf.tb_len == 0 && typebuf.tb_buflen + >= addlen + 3 * (MAXMAPLEN + 4)) + { + /* + * Buffer is empty and string fits in the existing buffer. + * Leave some space before and after, if possible. + */ + typebuf.tb_off = (typebuf.tb_buflen - addlen - 3 * (MAXMAPLEN + 4)) / 2; + mch_memmove(typebuf.tb_buf + typebuf.tb_off, str, (size_t)addlen); + } + else + { + /* + * Need to allocate a new buffer. + * In typebuf.tb_buf there must always be room for 3 * (MAXMAPLEN + 4) + * characters. We add some extra room to avoid having to allocate too + * often. + */ + newoff = MAXMAPLEN + 4; + newlen = typebuf.tb_len + addlen + newoff + 4 * (MAXMAPLEN + 4); + if (newlen < 0) /* string is getting too long */ + { + emsg(_(e_toocompl)); /* also calls flush_buffers */ + setcursor(); + return FAIL; + } + s1 = alloc(newlen); + if (s1 == NULL) /* out of memory */ + return FAIL; + s2 = alloc(newlen); + if (s2 == NULL) /* out of memory */ + { + vim_free(s1); + return FAIL; + } + typebuf.tb_buflen = newlen; + + /* copy the old chars, before the insertion point */ + mch_memmove(s1 + newoff, typebuf.tb_buf + typebuf.tb_off, + (size_t)offset); + /* copy the new chars */ + mch_memmove(s1 + newoff + offset, str, (size_t)addlen); + /* copy the old chars, after the insertion point, including the NUL at + * the end */ + mch_memmove(s1 + newoff + offset + addlen, + typebuf.tb_buf + typebuf.tb_off + offset, + (size_t)(typebuf.tb_len - offset + 1)); + if (typebuf.tb_buf != typebuf_init) + vim_free(typebuf.tb_buf); + typebuf.tb_buf = s1; + + mch_memmove(s2 + newoff, typebuf.tb_noremap + typebuf.tb_off, + (size_t)offset); + mch_memmove(s2 + newoff + offset + addlen, + typebuf.tb_noremap + typebuf.tb_off + offset, + (size_t)(typebuf.tb_len - offset)); + if (typebuf.tb_noremap != noremapbuf_init) + vim_free(typebuf.tb_noremap); + typebuf.tb_noremap = s2; + + typebuf.tb_off = newoff; + } + typebuf.tb_len += addlen; + + /* If noremap == REMAP_SCRIPT: do remap script-local mappings. */ + if (noremap == REMAP_SCRIPT) + val = RM_SCRIPT; + else if (noremap == REMAP_SKIP) + val = RM_ABBR; + else + val = RM_NONE; + + /* + * Adjust typebuf.tb_noremap[] for the new characters: + * If noremap == REMAP_NONE or REMAP_SCRIPT: new characters are + * (sometimes) not remappable + * If noremap == REMAP_YES: all the new characters are mappable + * If noremap > 0: "noremap" characters are not remappable, the rest + * mappable + */ + if (noremap == REMAP_SKIP) + nrm = 1; + else if (noremap < 0) + nrm = addlen; + else + nrm = noremap; + for (i = 0; i < addlen; ++i) + typebuf.tb_noremap[typebuf.tb_off + i + offset] = + (--nrm >= 0) ? val : RM_YES; + + /* tb_maplen and tb_silent only remember the length of mapped and/or + * silent mappings at the start of the buffer, assuming that a mapped + * sequence doesn't result in typed characters. */ + if (nottyped || typebuf.tb_maplen > offset) + typebuf.tb_maplen += addlen; + if (silent || typebuf.tb_silent > offset) + { + typebuf.tb_silent += addlen; + cmd_silent = TRUE; + } + if (typebuf.tb_no_abbr_cnt && offset == 0) /* and not used for abbrev.s */ + typebuf.tb_no_abbr_cnt += addlen; + + return OK; +} + +/* + * Put character "c" back into the typeahead buffer. + * Can be used for a character obtained by vgetc() that needs to be put back. + * Uses cmd_silent, KeyTyped and KeyNoremap to restore the flags belonging to + * the char. + */ + void +ins_char_typebuf(int c) +{ + char_u buf[MB_MAXBYTES + 1]; + if (IS_SPECIAL(c)) + { + buf[0] = K_SPECIAL; + buf[1] = K_SECOND(c); + buf[2] = K_THIRD(c); + buf[3] = NUL; + } + else + buf[(*mb_char2bytes)(c, buf)] = NUL; + (void)ins_typebuf(buf, KeyNoremap, 0, !KeyTyped, cmd_silent); +} + +/* + * Return TRUE if the typeahead buffer was changed (while waiting for a + * character to arrive). Happens when a message was received from a client or + * from feedkeys(). + * But check in a more generic way to avoid trouble: When "typebuf.tb_buf" + * changed it was reallocated and the old pointer can no longer be used. + * Or "typebuf.tb_off" may have been changed and we would overwrite characters + * that was just added. + */ + int +typebuf_changed( + int tb_change_cnt) /* old value of typebuf.tb_change_cnt */ +{ + return (tb_change_cnt != 0 && (typebuf.tb_change_cnt != tb_change_cnt +#if defined(FEAT_CLIENTSERVER) || defined(FEAT_EVAL) + || typebuf_was_filled +#endif + )); +} + +/* + * Return TRUE if there are no characters in the typeahead buffer that have + * not been typed (result from a mapping or come from ":normal"). + */ + int +typebuf_typed(void) +{ + return typebuf.tb_maplen == 0; +} + +/* + * Return the number of characters that are mapped (or not typed). + */ + int +typebuf_maplen(void) +{ + return typebuf.tb_maplen; +} + +/* + * remove "len" characters from typebuf.tb_buf[typebuf.tb_off + offset] + */ + void +del_typebuf(int len, int offset) +{ + int i; + + if (len == 0) + return; /* nothing to do */ + + typebuf.tb_len -= len; + + /* + * Easy case: Just increase typebuf.tb_off. + */ + if (offset == 0 && typebuf.tb_buflen - (typebuf.tb_off + len) + >= 3 * MAXMAPLEN + 3) + typebuf.tb_off += len; + /* + * Have to move the characters in typebuf.tb_buf[] and typebuf.tb_noremap[] + */ + else + { + i = typebuf.tb_off + offset; + /* + * Leave some extra room at the end to avoid reallocation. + */ + if (typebuf.tb_off > MAXMAPLEN) + { + mch_memmove(typebuf.tb_buf + MAXMAPLEN, + typebuf.tb_buf + typebuf.tb_off, (size_t)offset); + mch_memmove(typebuf.tb_noremap + MAXMAPLEN, + typebuf.tb_noremap + typebuf.tb_off, (size_t)offset); + typebuf.tb_off = MAXMAPLEN; + } + /* adjust typebuf.tb_buf (include the NUL at the end) */ + mch_memmove(typebuf.tb_buf + typebuf.tb_off + offset, + typebuf.tb_buf + i + len, + (size_t)(typebuf.tb_len - offset + 1)); + /* adjust typebuf.tb_noremap[] */ + mch_memmove(typebuf.tb_noremap + typebuf.tb_off + offset, + typebuf.tb_noremap + i + len, + (size_t)(typebuf.tb_len - offset)); + } + + if (typebuf.tb_maplen > offset) /* adjust tb_maplen */ + { + if (typebuf.tb_maplen < offset + len) + typebuf.tb_maplen = offset; + else + typebuf.tb_maplen -= len; + } + if (typebuf.tb_silent > offset) /* adjust tb_silent */ + { + if (typebuf.tb_silent < offset + len) + typebuf.tb_silent = offset; + else + typebuf.tb_silent -= len; + } + if (typebuf.tb_no_abbr_cnt > offset) /* adjust tb_no_abbr_cnt */ + { + if (typebuf.tb_no_abbr_cnt < offset + len) + typebuf.tb_no_abbr_cnt = offset; + else + typebuf.tb_no_abbr_cnt -= len; + } + +#if defined(FEAT_CLIENTSERVER) || defined(FEAT_EVAL) + /* Reset the flag that text received from a client or from feedkeys() + * was inserted in the typeahead buffer. */ + typebuf_was_filled = FALSE; +#endif + if (++typebuf.tb_change_cnt == 0) + typebuf.tb_change_cnt = 1; +} + +/* + * Write typed characters to script file. + * If recording is on put the character in the recordbuffer. + */ + static void +gotchars(char_u *chars, int len) +{ + char_u *s = chars; + int i; + static char_u buf[4]; + static int buflen = 0; + int todo = len; + + while (todo--) + { + buf[buflen++] = *s++; + + // When receiving a special key sequence, store it until we have all + // the bytes and we can decide what to do with it. + if (buflen == 1 && buf[0] == K_SPECIAL) + continue; + if (buflen == 2) + continue; + if (buflen == 3 && buf[1] == KS_EXTRA + && (buf[2] == KE_FOCUSGAINED || buf[2] == KE_FOCUSLOST)) + { + // Drop K_FOCUSGAINED and K_FOCUSLOST, they are not useful in a + // recording. + buflen = 0; + continue; + } + + /* Handle one byte at a time; no translation to be done. */ + for (i = 0; i < buflen; ++i) + updatescript(buf[i]); + + if (reg_recording != 0) + { + buf[buflen] = NUL; + add_buff(&recordbuff, buf, (long)buflen); + /* remember how many chars were last recorded */ + last_recorded_len += buflen; + } + buflen = 0; + } + may_sync_undo(); + +#ifdef FEAT_EVAL + /* output "debug mode" message next time in debug mode */ + debug_did_msg = FALSE; +#endif + + /* Since characters have been typed, consider the following to be in + * another mapping. Search string will be kept in history. */ + ++maptick; +} + +/* + * Sync undo. Called when typed characters are obtained from the typeahead + * buffer, or when a menu is used. + * Do not sync: + * - In Insert mode, unless cursor key has been used. + * - While reading a script file. + * - When no_u_sync is non-zero. + */ + static void +may_sync_undo(void) +{ + if ((!(State & (INSERT + CMDLINE)) || arrow_used) + && scriptin[curscript] == NULL) + u_sync(FALSE); +} + +/* + * Make "typebuf" empty and allocate new buffers. + * Returns FAIL when out of memory. + */ + int +alloc_typebuf(void) +{ + typebuf.tb_buf = alloc(TYPELEN_INIT); + typebuf.tb_noremap = alloc(TYPELEN_INIT); + if (typebuf.tb_buf == NULL || typebuf.tb_noremap == NULL) + { + free_typebuf(); + return FAIL; + } + typebuf.tb_buflen = TYPELEN_INIT; + typebuf.tb_off = MAXMAPLEN + 4; /* can insert without realloc */ + typebuf.tb_len = 0; + typebuf.tb_maplen = 0; + typebuf.tb_silent = 0; + typebuf.tb_no_abbr_cnt = 0; + if (++typebuf.tb_change_cnt == 0) + typebuf.tb_change_cnt = 1; + return OK; +} + +/* + * Free the buffers of "typebuf". + */ + void +free_typebuf(void) +{ + if (typebuf.tb_buf == typebuf_init) + internal_error("Free typebuf 1"); + else + vim_free(typebuf.tb_buf); + if (typebuf.tb_noremap == noremapbuf_init) + internal_error("Free typebuf 2"); + else + vim_free(typebuf.tb_noremap); +} + +/* + * When doing ":so! file", the current typeahead needs to be saved, and + * restored when "file" has been read completely. + */ +static typebuf_T saved_typebuf[NSCRIPT]; + + int +save_typebuf(void) +{ + init_typebuf(); + saved_typebuf[curscript] = typebuf; + /* If out of memory: restore typebuf and close file. */ + if (alloc_typebuf() == FAIL) + { + closescript(); + return FAIL; + } + return OK; +} + +static int old_char = -1; /* character put back by vungetc() */ +static int old_mod_mask; /* mod_mask for ungotten character */ +#ifdef FEAT_MOUSE +static int old_mouse_row; /* mouse_row related to old_char */ +static int old_mouse_col; /* mouse_col related to old_char */ +#endif + +/* + * Save all three kinds of typeahead, so that the user must type at a prompt. + */ + void +save_typeahead(tasave_T *tp) +{ + tp->save_typebuf = typebuf; + tp->typebuf_valid = (alloc_typebuf() == OK); + if (!tp->typebuf_valid) + typebuf = tp->save_typebuf; + + tp->old_char = old_char; + tp->old_mod_mask = old_mod_mask; + old_char = -1; + + tp->save_readbuf1 = readbuf1; + readbuf1.bh_first.b_next = NULL; + tp->save_readbuf2 = readbuf2; + readbuf2.bh_first.b_next = NULL; +# ifdef USE_INPUT_BUF + tp->save_inputbuf = get_input_buf(); +# endif +} + +/* + * Restore the typeahead to what it was before calling save_typeahead(). + * The allocated memory is freed, can only be called once! + */ + void +restore_typeahead(tasave_T *tp) +{ + if (tp->typebuf_valid) + { + free_typebuf(); + typebuf = tp->save_typebuf; + } + + old_char = tp->old_char; + old_mod_mask = tp->old_mod_mask; + + free_buff(&readbuf1); + readbuf1 = tp->save_readbuf1; + free_buff(&readbuf2); + readbuf2 = tp->save_readbuf2; +# ifdef USE_INPUT_BUF + set_input_buf(tp->save_inputbuf); +# endif +} + +/* + * Open a new script file for the ":source!" command. + */ + void +openscript( + char_u *name, + int directly) /* when TRUE execute directly */ +{ + if (curscript + 1 == NSCRIPT) + { + emsg(_(e_nesting)); + return; + } +#ifdef FEAT_EVAL + if (ignore_script) + /* Not reading from script, also don't open one. Warning message? */ + return; +#endif + + if (scriptin[curscript] != NULL) /* already reading script */ + ++curscript; + /* use NameBuff for expanded name */ + expand_env(name, NameBuff, MAXPATHL); + if ((scriptin[curscript] = mch_fopen((char *)NameBuff, READBIN)) == NULL) + { + semsg(_(e_notopen), name); + if (curscript) + --curscript; + return; + } + if (save_typebuf() == FAIL) + return; + + /* + * Execute the commands from the file right now when using ":source!" + * after ":global" or ":argdo" or in a loop. Also when another command + * follows. This means the display won't be updated. Don't do this + * always, "make test" would fail. + */ + if (directly) + { + oparg_T oa; + int oldcurscript; + int save_State = State; + int save_restart_edit = restart_edit; + int save_insertmode = p_im; + int save_finish_op = finish_op; + int save_msg_scroll = msg_scroll; + + State = NORMAL; + msg_scroll = FALSE; /* no msg scrolling in Normal mode */ + restart_edit = 0; /* don't go to Insert mode */ + p_im = FALSE; /* don't use 'insertmode' */ + clear_oparg(&oa); + finish_op = FALSE; + + oldcurscript = curscript; + do + { + update_topline_cursor(); /* update cursor position and topline */ + normal_cmd(&oa, FALSE); /* execute one command */ + vpeekc(); /* check for end of file */ + } + while (scriptin[oldcurscript] != NULL); + + State = save_State; + msg_scroll = save_msg_scroll; + restart_edit = save_restart_edit; + p_im = save_insertmode; + finish_op = save_finish_op; + } +} + +/* + * Close the currently active input script. + */ + static void +closescript(void) +{ + free_typebuf(); + typebuf = saved_typebuf[curscript]; + + fclose(scriptin[curscript]); + scriptin[curscript] = NULL; + if (curscript > 0) + --curscript; +} + +#if defined(EXITFREE) || defined(PROTO) + void +close_all_scripts(void) +{ + while (scriptin[0] != NULL) + closescript(); +} +#endif + +#if defined(FEAT_INS_EXPAND) || defined(PROTO) +/* + * Return TRUE when reading keys from a script file. + */ + int +using_script(void) +{ + return scriptin[curscript] != NULL; +} +#endif + +/* + * This function is called just before doing a blocking wait. Thus after + * waiting 'updatetime' for a character to arrive. + */ + void +before_blocking(void) +{ + updatescript(0); +#ifdef FEAT_EVAL + if (may_garbage_collect) + garbage_collect(FALSE); +#endif +} + +/* + * updatescipt() is called when a character can be written into the script file + * or when we have waited some time for a character (c == 0) + * + * All the changed memfiles are synced if c == 0 or when the number of typed + * characters reaches 'updatecount' and 'updatecount' is non-zero. + */ + void +updatescript(int c) +{ + static int count = 0; + + if (c && scriptout) + putc(c, scriptout); + if (c == 0 || (p_uc > 0 && ++count >= p_uc)) + { + ml_sync_all(c == 0, TRUE); + count = 0; + } +} + +/* + * Get the next input character. + * Can return a special key or a multi-byte character. + * Can return NUL when called recursively, use safe_vgetc() if that's not + * wanted. + * This translates escaped K_SPECIAL and CSI bytes to a K_SPECIAL or CSI byte. + * Collects the bytes of a multibyte character into the whole character. + * Returns the modifiers in the global "mod_mask". + */ + int +vgetc(void) +{ + int c, c2; + int n; + char_u buf[MB_MAXBYTES + 1]; + int i; + +#ifdef FEAT_EVAL + /* Do garbage collection when garbagecollect() was called previously and + * we are now at the toplevel. */ + if (may_garbage_collect && want_garbage_collect) + garbage_collect(FALSE); +#endif + + /* + * If a character was put back with vungetc, it was already processed. + * Return it directly. + */ + if (old_char != -1) + { + c = old_char; + old_char = -1; + mod_mask = old_mod_mask; +#ifdef FEAT_MOUSE + mouse_row = old_mouse_row; + mouse_col = old_mouse_col; +#endif + } + else + { + mod_mask = 0x0; + last_recorded_len = 0; + for (;;) /* this is done twice if there are modifiers */ + { + int did_inc = FALSE; + + if (mod_mask +#if defined(FEAT_XIM) && defined(FEAT_GUI_GTK) + || im_is_preediting() +#endif + ) + { + /* no mapping after modifier has been read */ + ++no_mapping; + ++allow_keys; + did_inc = TRUE; /* mod_mask may change value */ + } + c = vgetorpeek(TRUE); + if (did_inc) + { + --no_mapping; + --allow_keys; + } + + /* Get two extra bytes for special keys */ + if (c == K_SPECIAL +#ifdef FEAT_GUI + || c == CSI +#endif + ) + { + int save_allow_keys = allow_keys; + + ++no_mapping; + allow_keys = 0; /* make sure BS is not found */ + c2 = vgetorpeek(TRUE); /* no mapping for these chars */ + c = vgetorpeek(TRUE); + --no_mapping; + allow_keys = save_allow_keys; + if (c2 == KS_MODIFIER) + { + mod_mask = c; + continue; + } + c = TO_SPECIAL(c2, c); + +#if defined(FEAT_GUI_W32) && defined(FEAT_MENU) && defined(FEAT_TEAROFF) + /* Handle K_TEAROFF here, the caller of vgetc() doesn't need to + * know that a menu was torn off */ + if (c == K_TEAROFF) + { + char_u name[200]; + int i; + + /* get menu path, it ends with a <CR> */ + for (i = 0; (c = vgetorpeek(TRUE)) != '\r'; ) + { + name[i] = c; + if (i < 199) + ++i; + } + name[i] = NUL; + gui_make_tearoff(name); + continue; + } +#endif +#if defined(FEAT_GUI) && defined(FEAT_GUI_GTK) && defined(FEAT_MENU) + /* GTK: <F10> normally selects the menu, but it's passed until + * here to allow mapping it. Intercept and invoke the GTK + * behavior if it's not mapped. */ + if (c == K_F10 && gui.menubar != NULL) + { + gtk_menu_shell_select_first(GTK_MENU_SHELL(gui.menubar), FALSE); + continue; + } +#endif +#ifdef FEAT_GUI + /* Handle focus event here, so that the caller doesn't need to + * know about it. Return K_IGNORE so that we loop once (needed if + * 'lazyredraw' is set). */ + if (c == K_FOCUSGAINED || c == K_FOCUSLOST) + { + ui_focus_change(c == K_FOCUSGAINED); + c = K_IGNORE; + } + + /* Translate K_CSI to CSI. The special key is only used to avoid + * it being recognized as the start of a special key. */ + if (c == K_CSI) + c = CSI; +#endif + } + /* a keypad or special function key was not mapped, use it like + * its ASCII equivalent */ + switch (c) + { + case K_KPLUS: c = '+'; break; + case K_KMINUS: c = '-'; break; + case K_KDIVIDE: c = '/'; break; + case K_KMULTIPLY: c = '*'; break; + case K_KENTER: c = CAR; break; + case K_KPOINT: +#ifdef WIN32 + // Can be either '.' or a ',', + // depending on the type of keypad. + c = MapVirtualKey(VK_DECIMAL, 2); break; +#else + c = '.'; break; +#endif + case K_K0: c = '0'; break; + case K_K1: c = '1'; break; + case K_K2: c = '2'; break; + case K_K3: c = '3'; break; + case K_K4: c = '4'; break; + case K_K5: c = '5'; break; + case K_K6: c = '6'; break; + case K_K7: c = '7'; break; + case K_K8: c = '8'; break; + case K_K9: c = '9'; break; + + case K_XHOME: + case K_ZHOME: if (mod_mask == MOD_MASK_SHIFT) + { + c = K_S_HOME; + mod_mask = 0; + } + else if (mod_mask == MOD_MASK_CTRL) + { + c = K_C_HOME; + mod_mask = 0; + } + else + c = K_HOME; + break; + case K_XEND: + case K_ZEND: if (mod_mask == MOD_MASK_SHIFT) + { + c = K_S_END; + mod_mask = 0; + } + else if (mod_mask == MOD_MASK_CTRL) + { + c = K_C_END; + mod_mask = 0; + } + else + c = K_END; + break; + + case K_XUP: c = K_UP; break; + case K_XDOWN: c = K_DOWN; break; + case K_XLEFT: c = K_LEFT; break; + case K_XRIGHT: c = K_RIGHT; break; + } + + /* For a multi-byte character get all the bytes and return the + * converted character. + * Note: This will loop until enough bytes are received! + */ + if (has_mbyte && (n = MB_BYTE2LEN_CHECK(c)) > 1) + { + ++no_mapping; + buf[0] = c; + for (i = 1; i < n; ++i) + { + buf[i] = vgetorpeek(TRUE); + if (buf[i] == K_SPECIAL +#ifdef FEAT_GUI + || buf[i] == CSI +#endif + ) + { + /* Must be a K_SPECIAL - KS_SPECIAL - KE_FILLER sequence, + * which represents a K_SPECIAL (0x80), + * or a CSI - KS_EXTRA - KE_CSI sequence, which represents + * a CSI (0x9B), + * of a K_SPECIAL - KS_EXTRA - KE_CSI, which is CSI too. */ + c = vgetorpeek(TRUE); + if (vgetorpeek(TRUE) == (int)KE_CSI && c == KS_EXTRA) + buf[i] = CSI; + } + } + --no_mapping; + c = (*mb_ptr2char)(buf); + } + + break; + } + } + +#ifdef FEAT_EVAL + /* + * In the main loop "may_garbage_collect" can be set to do garbage + * collection in the first next vgetc(). It's disabled after that to + * avoid internally used Lists and Dicts to be freed. + */ + may_garbage_collect = FALSE; +#endif +#ifdef FEAT_BEVAL_TERM + if (c != K_MOUSEMOVE && c != K_IGNORE) + { + /* Don't trigger 'balloonexpr' unless only the mouse was moved. */ + bevalexpr_due_set = FALSE; + ui_remove_balloon(); + } +#endif + + return c; +} + +/* + * Like vgetc(), but never return a NUL when called recursively, get a key + * directly from the user (ignoring typeahead). + */ + int +safe_vgetc(void) +{ + int c; + + c = vgetc(); + if (c == NUL) + c = get_keystroke(); + return c; +} + +/* + * Like safe_vgetc(), but loop to handle K_IGNORE. + * Also ignore scrollbar events. + */ + int +plain_vgetc(void) +{ + int c; + + do + { + c = safe_vgetc(); + } while (c == K_IGNORE || c == K_VER_SCROLLBAR || c == K_HOR_SCROLLBAR); + + if (c == K_PS) + /* Only handle the first pasted character. Drop the rest, since we + * don't know what to do with it. */ + c = bracketed_paste(PASTE_ONE_CHAR, FALSE, NULL); + + return c; +} + +/* + * Check if a character is available, such that vgetc() will not block. + * If the next character is a special character or multi-byte, the returned + * character is not valid!. + * Returns NUL if no character is available. + */ + int +vpeekc(void) +{ + if (old_char != -1) + return old_char; + return vgetorpeek(FALSE); +} + +#if defined(FEAT_TERMRESPONSE) || defined(FEAT_TERMINAL) || defined(PROTO) +/* + * Like vpeekc(), but don't allow mapping. Do allow checking for terminal + * codes. + */ + int +vpeekc_nomap(void) +{ + int c; + + ++no_mapping; + ++allow_keys; + c = vpeekc(); + --no_mapping; + --allow_keys; + return c; +} +#endif + +#if defined(FEAT_INS_EXPAND) || defined(FEAT_EVAL) || defined(PROTO) +/* + * Check if any character is available, also half an escape sequence. + * Trick: when no typeahead found, but there is something in the typeahead + * buffer, it must be an ESC that is recognized as the start of a key code. + */ + int +vpeekc_any(void) +{ + int c; + + c = vpeekc(); + if (c == NUL && typebuf.tb_len > 0) + c = ESC; + return c; +} +#endif + +/* + * Call vpeekc() without causing anything to be mapped. + * Return TRUE if a character is available, FALSE otherwise. + */ + int +char_avail(void) +{ + int retval; + +#ifdef FEAT_EVAL + /* When test_override("char_avail", 1) was called pretend there is no + * typeahead. */ + if (disable_char_avail_for_testing) + return FALSE; +#endif + ++no_mapping; + retval = vpeekc(); + --no_mapping; + return (retval != NUL); +} + +/* + * unget one character (can only be done once!) + */ + void +vungetc(int c) +{ + old_char = c; + old_mod_mask = mod_mask; +#ifdef FEAT_MOUSE + old_mouse_row = mouse_row; + old_mouse_col = mouse_col; +#endif +} + +/* + * Get a byte: + * 1. from the stuffbuffer + * This is used for abbreviated commands like "D" -> "d$". + * Also used to redo a command for ".". + * 2. from the typeahead buffer + * Stores text obtained previously but not used yet. + * Also stores the result of mappings. + * Also used for the ":normal" command. + * 3. from the user + * This may do a blocking wait if "advance" is TRUE. + * + * if "advance" is TRUE (vgetc()): + * Really get the character. + * KeyTyped is set to TRUE in the case the user typed the key. + * KeyStuffed is TRUE if the character comes from the stuff buffer. + * if "advance" is FALSE (vpeekc()): + * Just look whether there is a character available. + * Return NUL if not. + * + * When "no_mapping" is zero, checks for mappings in the current mode. + * Only returns one byte (of a multi-byte character). + * K_SPECIAL and CSI may be escaped, need to get two more bytes then. + */ + static int +vgetorpeek(int advance) +{ + int c, c1; + int keylen; + char_u *s; + mapblock_T *mp; +#ifdef FEAT_LOCALMAP + mapblock_T *mp2; +#endif + mapblock_T *mp_match; + int mp_match_len = 0; + int timedout = FALSE; /* waited for more than 1 second + for mapping to complete */ + int mapdepth = 0; /* check for recursive mapping */ + int mode_deleted = FALSE; /* set when mode has been deleted */ + int local_State; + int mlen; + int max_mlen; + int i; +#ifdef FEAT_CMDL_INFO + int new_wcol, new_wrow; +#endif +#ifdef FEAT_GUI +# ifdef FEAT_MENU + int idx; +# endif + int shape_changed = FALSE; /* adjusted cursor shape */ +#endif + int n; +#ifdef FEAT_LANGMAP + int nolmaplen; +#endif + int old_wcol, old_wrow; + int wait_tb_len; + + /* + * This function doesn't work very well when called recursively. This may + * happen though, because of: + * 1. The call to add_to_showcmd(). char_avail() is then used to check if + * there is a character available, which calls this function. In that + * case we must return NUL, to indicate no character is available. + * 2. A GUI callback function writes to the screen, causing a + * wait_return(). + * Using ":normal" can also do this, but it saves the typeahead buffer, + * thus it should be OK. But don't get a key from the user then. + */ + if (vgetc_busy > 0 && ex_normal_busy == 0) + return NUL; + + local_State = get_real_state(); + + ++vgetc_busy; + + if (advance) + KeyStuffed = FALSE; + + init_typebuf(); + start_stuff(); + if (advance && typebuf.tb_maplen == 0) + reg_executing = 0; + do + { +/* + * get a character: 1. from the stuffbuffer + */ + if (typeahead_char != 0) + { + c = typeahead_char; + if (advance) + typeahead_char = 0; + } + else + c = read_readbuffers(advance); + if (c != NUL && !got_int) + { + if (advance) + { + /* KeyTyped = FALSE; When the command that stuffed something + * was typed, behave like the stuffed command was typed. + * needed for CTRL-W CTRL-] to open a fold, for example. */ + KeyStuffed = TRUE; + } + if (typebuf.tb_no_abbr_cnt == 0) + typebuf.tb_no_abbr_cnt = 1; /* no abbreviations now */ + } + else + { + /* + * Loop until we either find a matching mapped key, or we + * are sure that it is not a mapped key. + * If a mapped key sequence is found we go back to the start to + * try re-mapping. + */ + for (;;) + { + /* + * ui_breakcheck() is slow, don't use it too often when + * inside a mapping. But call it each time for typed + * characters. + */ + if (typebuf.tb_maplen) + line_breakcheck(); + else + ui_breakcheck(); /* check for CTRL-C */ + keylen = 0; + if (got_int) + { + /* flush all input */ + c = inchar(typebuf.tb_buf, typebuf.tb_buflen - 1, 0L); + /* + * If inchar() returns TRUE (script file was active) or we + * are inside a mapping, get out of Insert mode. + * Otherwise we behave like having gotten a CTRL-C. + * As a result typing CTRL-C in insert mode will + * really insert a CTRL-C. + */ + if ((c || typebuf.tb_maplen) + && (State & (INSERT + CMDLINE))) + c = ESC; + else + c = Ctrl_C; + flush_buffers(FLUSH_INPUT); // flush all typeahead + + if (advance) + { + /* Also record this character, it might be needed to + * get out of Insert mode. */ + *typebuf.tb_buf = c; + gotchars(typebuf.tb_buf, 1); + } + cmd_silent = FALSE; + + break; + } + else if (typebuf.tb_len > 0) + { + /* + * Check for a mappable key sequence. + * Walk through one maphash[] list until we find an + * entry that matches. + * + * Don't look for mappings if: + * - no_mapping set: mapping disabled (e.g. for CTRL-V) + * - maphash_valid not set: no mappings present. + * - typebuf.tb_buf[typebuf.tb_off] should not be remapped + * - in insert or cmdline mode and 'paste' option set + * - waiting for "hit return to continue" and CR or SPACE + * typed + * - waiting for a char with --more-- + * - in Ctrl-X mode, and we get a valid char for that mode + */ + mp = NULL; + max_mlen = 0; + c1 = typebuf.tb_buf[typebuf.tb_off]; + if (no_mapping == 0 && maphash_valid + && (no_zero_mapping == 0 || c1 != '0') + && (typebuf.tb_maplen == 0 + || (p_remap + && (typebuf.tb_noremap[typebuf.tb_off] + & (RM_NONE|RM_ABBR)) == 0)) + && !(p_paste && (State & (INSERT + CMDLINE))) + && !(State == HITRETURN && (c1 == CAR || c1 == ' ')) + && State != ASKMORE + && State != CONFIRM +#ifdef FEAT_INS_EXPAND + && !((ctrl_x_mode_not_default() + && vim_is_ctrl_x_key(c1)) + || ((compl_cont_status & CONT_LOCAL) + && (c1 == Ctrl_N || c1 == Ctrl_P))) +#endif + ) + { +#ifdef FEAT_LANGMAP + if (c1 == K_SPECIAL) + nolmaplen = 2; + else + { + LANGMAP_ADJUST(c1, + (State & (CMDLINE | INSERT)) == 0 + && get_real_state() != SELECTMODE); + nolmaplen = 0; + } +#endif +#ifdef FEAT_LOCALMAP + /* First try buffer-local mappings. */ + mp = curbuf->b_maphash[MAP_HASH(local_State, c1)]; + mp2 = maphash[MAP_HASH(local_State, c1)]; + if (mp == NULL) + { + /* There are no buffer-local mappings. */ + mp = mp2; + mp2 = NULL; + } +#else + mp = maphash[MAP_HASH(local_State, c1)]; +#endif + /* + * Loop until a partly matching mapping is found or + * all (local) mappings have been checked. + * The longest full match is remembered in "mp_match". + * A full match is only accepted if there is no partly + * match, so "aa" and "aaa" can both be mapped. + */ + mp_match = NULL; + mp_match_len = 0; + for ( ; mp != NULL; +#ifdef FEAT_LOCALMAP + mp->m_next == NULL ? (mp = mp2, mp2 = NULL) : +#endif + (mp = mp->m_next)) + { + /* + * Only consider an entry if the first character + * matches and it is for the current state. + * Skip ":lmap" mappings if keys were mapped. + */ + if (mp->m_keys[0] == c1 + && (mp->m_mode & local_State) + && ((mp->m_mode & LANGMAP) == 0 + || typebuf.tb_maplen == 0)) + { +#ifdef FEAT_LANGMAP + int nomap = nolmaplen; + int c2; +#endif + /* find the match length of this mapping */ + for (mlen = 1; mlen < typebuf.tb_len; ++mlen) + { +#ifdef FEAT_LANGMAP + c2 = typebuf.tb_buf[typebuf.tb_off + mlen]; + if (nomap > 0) + --nomap; + else if (c2 == K_SPECIAL) + nomap = 2; + else + LANGMAP_ADJUST(c2, TRUE); + if (mp->m_keys[mlen] != c2) +#else + if (mp->m_keys[mlen] != + typebuf.tb_buf[typebuf.tb_off + mlen]) +#endif + break; + } + + /* Don't allow mapping the first byte(s) of a + * multi-byte char. Happens when mapping + * <M-a> and then changing 'encoding'. Beware + * that 0x80 is escaped. */ + { + char_u *p1 = mp->m_keys; + char_u *p2 = mb_unescape(&p1); + + if (has_mbyte && p2 != NULL + && MB_BYTE2LEN(c1) > MB_PTR2LEN(p2)) + mlen = 0; + } + /* + * Check an entry whether it matches. + * - Full match: mlen == keylen + * - Partly match: mlen == typebuf.tb_len + */ + keylen = mp->m_keylen; + if (mlen == keylen + || (mlen == typebuf.tb_len + && typebuf.tb_len < keylen)) + { + /* + * If only script-local mappings are + * allowed, check if the mapping starts + * with K_SNR. + */ + s = typebuf.tb_noremap + typebuf.tb_off; + if (*s == RM_SCRIPT + && (mp->m_keys[0] != K_SPECIAL + || mp->m_keys[1] != KS_EXTRA + || mp->m_keys[2] + != (int)KE_SNR)) + continue; + /* + * If one of the typed keys cannot be + * remapped, skip the entry. + */ + for (n = mlen; --n >= 0; ) + if (*s++ & (RM_NONE|RM_ABBR)) + break; + if (n >= 0) + continue; + + if (keylen > typebuf.tb_len) + { + if (!timedout && !(mp_match != NULL + && mp_match->m_nowait)) + { + /* break at a partly match */ + keylen = KEYLEN_PART_MAP; + break; + } + } + else if (keylen > mp_match_len) + { + /* found a longer match */ + mp_match = mp; + mp_match_len = keylen; + } + } + else + /* No match; may have to check for + * termcode at next character. */ + if (max_mlen < mlen) + max_mlen = mlen; + } + } + + /* If no partly match found, use the longest full + * match. */ + if (keylen != KEYLEN_PART_MAP) + { + mp = mp_match; + keylen = mp_match_len; + } + } + + /* Check for match with 'pastetoggle' */ + if (*p_pt != NUL && mp == NULL && (State & (INSERT|NORMAL))) + { + for (mlen = 0; mlen < typebuf.tb_len && p_pt[mlen]; + ++mlen) + if (p_pt[mlen] != typebuf.tb_buf[typebuf.tb_off + + mlen]) + break; + if (p_pt[mlen] == NUL) /* match */ + { + /* write chars to script file(s) */ + if (mlen > typebuf.tb_maplen) + gotchars(typebuf.tb_buf + typebuf.tb_off + + typebuf.tb_maplen, + mlen - typebuf.tb_maplen); + + del_typebuf(mlen, 0); /* remove the chars */ + set_option_value((char_u *)"paste", + (long)!p_paste, NULL, 0); + if (!(State & INSERT)) + { + msg_col = 0; + msg_row = Rows - 1; + msg_clr_eos(); /* clear ruler */ + } + status_redraw_all(); + redraw_statuslines(); + showmode(); + setcursor(); + continue; + } + /* Need more chars for partly match. */ + if (mlen == typebuf.tb_len) + keylen = KEYLEN_PART_KEY; + else if (max_mlen < mlen) + /* no match, may have to check for termcode at + * next character */ + max_mlen = mlen + 1; + } + + if ((mp == NULL || max_mlen >= mp_match_len) + && keylen != KEYLEN_PART_MAP) + { + int save_keylen = keylen; + + /* + * When no matching mapping found or found a + * non-matching mapping that matches at least what the + * matching mapping matched: + * Check if we have a terminal code, when: + * mapping is allowed, + * keys have not been mapped, + * and not an ESC sequence, not in insert mode or + * p_ek is on, + * and when not timed out, + */ + if ((no_mapping == 0 || allow_keys != 0) + && (typebuf.tb_maplen == 0 + || (p_remap && typebuf.tb_noremap[ + typebuf.tb_off] == RM_YES)) + && !timedout) + { + keylen = check_termcode(max_mlen + 1, + NULL, 0, NULL); + + /* If no termcode matched but 'pastetoggle' + * matched partially it's like an incomplete key + * sequence. */ + if (keylen == 0 && save_keylen == KEYLEN_PART_KEY) + keylen = KEYLEN_PART_KEY; + + /* + * When getting a partial match, but the last + * characters were not typed, don't wait for a + * typed character to complete the termcode. + * This helps a lot when a ":normal" command ends + * in an ESC. + */ + if (keylen < 0 + && typebuf.tb_len == typebuf.tb_maplen) + keylen = 0; + } + else + keylen = 0; + if (keylen == 0) /* no matching terminal code */ + { +#ifdef AMIGA /* check for window bounds report */ + if (typebuf.tb_maplen == 0 && (typebuf.tb_buf[ + typebuf.tb_off] & 0xff) == CSI) + { + for (s = typebuf.tb_buf + typebuf.tb_off + 1; + s < typebuf.tb_buf + typebuf.tb_off + + typebuf.tb_len + && (VIM_ISDIGIT(*s) || *s == ';' + || *s == ' '); + ++s) + ; + if (*s == 'r' || *s == '|') /* found one */ + { + del_typebuf((int)(s + 1 - + (typebuf.tb_buf + typebuf.tb_off)), 0); + /* get size and redraw screen */ + shell_resized(); + continue; + } + if (*s == NUL) /* need more characters */ + keylen = KEYLEN_PART_KEY; + } + if (keylen >= 0) +#endif + /* When there was a matching mapping and no + * termcode could be replaced after another one, + * use that mapping (loop around). If there was + * no mapping use the character from the + * typeahead buffer right here. */ + if (mp == NULL) + { +/* + * get a character: 2. from the typeahead buffer + */ + c = typebuf.tb_buf[typebuf.tb_off] & 255; + if (advance) /* remove chars from tb_buf */ + { + cmd_silent = (typebuf.tb_silent > 0); + if (typebuf.tb_maplen > 0) + KeyTyped = FALSE; + else + { + KeyTyped = TRUE; + /* write char to script file(s) */ + gotchars(typebuf.tb_buf + + typebuf.tb_off, 1); + } + KeyNoremap = typebuf.tb_noremap[ + typebuf.tb_off]; + del_typebuf(1, 0); + } + break; /* got character, break for loop */ + } + } + if (keylen > 0) /* full matching terminal code */ + { +#if defined(FEAT_GUI) && defined(FEAT_MENU) + if (typebuf.tb_len >= 2 + && typebuf.tb_buf[typebuf.tb_off] == K_SPECIAL + && typebuf.tb_buf[typebuf.tb_off + 1] + == KS_MENU) + { + /* + * Using a menu may cause a break in undo! + * It's like using gotchars(), but without + * recording or writing to a script file. + */ + may_sync_undo(); + del_typebuf(3, 0); + idx = get_menu_index(current_menu, local_State); + if (idx != MENU_INDEX_INVALID) + { + /* + * In Select mode and a Visual mode menu + * is used: Switch to Visual mode + * temporarily. Append K_SELECT to switch + * back to Select mode. + */ + if (VIsual_active && VIsual_select + && (current_menu->modes & VISUAL)) + { + VIsual_select = FALSE; + (void)ins_typebuf(K_SELECT_STRING, + REMAP_NONE, 0, TRUE, FALSE); + } + ins_typebuf(current_menu->strings[idx], + current_menu->noremap[idx], + 0, TRUE, + current_menu->silent[idx]); + } + } +#endif /* FEAT_GUI && FEAT_MENU */ + continue; /* try mapping again */ + } + + /* Partial match: get some more characters. When a + * matching mapping was found use that one. */ + if (mp == NULL || keylen < 0) + keylen = KEYLEN_PART_KEY; + else + keylen = mp_match_len; + } + + /* complete match */ + if (keylen >= 0 && keylen <= typebuf.tb_len) + { +#ifdef FEAT_EVAL + int save_m_expr; + int save_m_noremap; + int save_m_silent; + char_u *save_m_keys; + char_u *save_m_str; +#else +# define save_m_noremap mp->m_noremap +# define save_m_silent mp->m_silent +#endif + + /* write chars to script file(s) */ + if (keylen > typebuf.tb_maplen) + gotchars(typebuf.tb_buf + typebuf.tb_off + + typebuf.tb_maplen, + keylen - typebuf.tb_maplen); + + cmd_silent = (typebuf.tb_silent > 0); + del_typebuf(keylen, 0); /* remove the mapped keys */ + + /* + * Put the replacement string in front of mapstr. + * The depth check catches ":map x y" and ":map y x". + */ + if (++mapdepth >= p_mmd) + { + emsg(_("E223: recursive mapping")); + if (State & CMDLINE) + redrawcmdline(); + else + setcursor(); + flush_buffers(FLUSH_MINIMAL); + mapdepth = 0; /* for next one */ + c = -1; + break; + } + + /* + * In Select mode and a Visual mode mapping is used: + * Switch to Visual mode temporarily. Append K_SELECT + * to switch back to Select mode. + */ + if (VIsual_active && VIsual_select + && (mp->m_mode & VISUAL)) + { + VIsual_select = FALSE; + (void)ins_typebuf(K_SELECT_STRING, REMAP_NONE, + 0, TRUE, FALSE); + } + +#ifdef FEAT_EVAL + /* Copy the values from *mp that are used, because + * evaluating the expression may invoke a function + * that redefines the mapping, thereby making *mp + * invalid. */ + save_m_expr = mp->m_expr; + save_m_noremap = mp->m_noremap; + save_m_silent = mp->m_silent; + save_m_keys = NULL; /* only saved when needed */ + save_m_str = NULL; /* only saved when needed */ + + /* + * Handle ":map <expr>": evaluate the {rhs} as an + * expression. Also save and restore the command line + * for "normal :". + */ + if (mp->m_expr) + { + int save_vgetc_busy = vgetc_busy; + + vgetc_busy = 0; + save_m_keys = vim_strsave(mp->m_keys); + save_m_str = vim_strsave(mp->m_str); + s = eval_map_expr(save_m_str, NUL); + vgetc_busy = save_vgetc_busy; + } + else +#endif + s = mp->m_str; + + /* + * Insert the 'to' part in the typebuf.tb_buf. + * If 'from' field is the same as the start of the + * 'to' field, don't remap the first character (but do + * allow abbreviations). + * If m_noremap is set, don't remap the whole 'to' + * part. + */ + if (s == NULL) + i = FAIL; + else + { + int noremap; + + if (save_m_noremap != REMAP_YES) + noremap = save_m_noremap; + else if ( +#ifdef FEAT_EVAL + STRNCMP(s, save_m_keys != NULL + ? save_m_keys : mp->m_keys, + (size_t)keylen) +#else + STRNCMP(s, mp->m_keys, (size_t)keylen) +#endif + != 0) + noremap = REMAP_YES; + else + noremap = REMAP_SKIP; + i = ins_typebuf(s, noremap, + 0, TRUE, cmd_silent || save_m_silent); +#ifdef FEAT_EVAL + if (save_m_expr) + vim_free(s); +#endif + } +#ifdef FEAT_EVAL + vim_free(save_m_keys); + vim_free(save_m_str); +#endif + if (i == FAIL) + { + c = -1; + break; + } + continue; + } + } + +/* + * get a character: 3. from the user - handle <Esc> in Insert mode + */ + /* + * Special case: if we get an <ESC> in insert mode and there + * are no more characters at once, we pretend to go out of + * insert mode. This prevents the one second delay after + * typing an <ESC>. If we get something after all, we may + * have to redisplay the mode. That the cursor is in the wrong + * place does not matter. + */ + c = 0; +#ifdef FEAT_CMDL_INFO + new_wcol = curwin->w_wcol; + new_wrow = curwin->w_wrow; +#endif + if ( advance + && typebuf.tb_len == 1 + && typebuf.tb_buf[typebuf.tb_off] == ESC + && !no_mapping + && ex_normal_busy == 0 + && typebuf.tb_maplen == 0 + && (State & INSERT) + && (p_timeout + || (keylen == KEYLEN_PART_KEY && p_ttimeout)) + && (c = inchar(typebuf.tb_buf + typebuf.tb_off + + typebuf.tb_len, 3, 25L)) == 0) + { + colnr_T col = 0, vcol; + char_u *ptr; + + if (mode_displayed) + { + unshowmode(TRUE); + mode_deleted = TRUE; + } +#ifdef FEAT_GUI + /* may show a different cursor shape */ + if (gui.in_use && State != NORMAL && !cmd_silent) + { + int save_State; + + save_State = State; + State = NORMAL; + gui_update_cursor(TRUE, FALSE); + State = save_State; + shape_changed = TRUE; + } +#endif + validate_cursor(); + old_wcol = curwin->w_wcol; + old_wrow = curwin->w_wrow; + + /* move cursor left, if possible */ + if (curwin->w_cursor.col != 0) + { + if (curwin->w_wcol > 0) + { + if (did_ai) + { + /* + * We are expecting to truncate the trailing + * white-space, so find the last non-white + * character -- webb + */ + col = vcol = curwin->w_wcol = 0; + ptr = ml_get_curline(); + while (col < curwin->w_cursor.col) + { + if (!VIM_ISWHITE(ptr[col])) + curwin->w_wcol = vcol; + vcol += lbr_chartabsize(ptr, ptr + col, + (colnr_T)vcol); + if (has_mbyte) + col += (*mb_ptr2len)(ptr + col); + else + ++col; + } + curwin->w_wrow = curwin->w_cline_row + + curwin->w_wcol / curwin->w_width; + curwin->w_wcol %= curwin->w_width; + curwin->w_wcol += curwin_col_off(); + col = 0; /* no correction needed */ + } + else + { + --curwin->w_wcol; + col = curwin->w_cursor.col - 1; + } + } + else if (curwin->w_p_wrap && curwin->w_wrow) + { + --curwin->w_wrow; + curwin->w_wcol = curwin->w_width - 1; + col = curwin->w_cursor.col - 1; + } + if (has_mbyte && col > 0 && curwin->w_wcol > 0) + { + /* Correct when the cursor is on the right halve + * of a double-wide character. */ + ptr = ml_get_curline(); + col -= (*mb_head_off)(ptr, ptr + col); + if ((*mb_ptr2cells)(ptr + col) > 1) + --curwin->w_wcol; + } + } + setcursor(); + out_flush(); +#ifdef FEAT_CMDL_INFO + new_wcol = curwin->w_wcol; + new_wrow = curwin->w_wrow; +#endif + curwin->w_wcol = old_wcol; + curwin->w_wrow = old_wrow; + } + if (c < 0) + continue; /* end of input script reached */ + + /* Allow mapping for just typed characters. When we get here c + * is the number of extra bytes and typebuf.tb_len is 1. */ + for (n = 1; n <= c; ++n) + typebuf.tb_noremap[typebuf.tb_off + n] = RM_YES; + typebuf.tb_len += c; + + /* buffer full, don't map */ + if (typebuf.tb_len >= typebuf.tb_maplen + MAXMAPLEN) + { + timedout = TRUE; + continue; + } + + if (ex_normal_busy > 0) + { +#ifdef FEAT_CMDWIN + static int tc = 0; +#endif + + /* No typeahead left and inside ":normal". Must return + * something to avoid getting stuck. When an incomplete + * mapping is present, behave like it timed out. */ + if (typebuf.tb_len > 0) + { + timedout = TRUE; + continue; + } + /* When 'insertmode' is set, ESC just beeps in Insert + * mode. Use CTRL-L to make edit() return. + * For the command line only CTRL-C always breaks it. + * For the cmdline window: Alternate between ESC and + * CTRL-C: ESC for most situations and CTRL-C to close the + * cmdline window. */ + if (p_im && (State & INSERT)) + c = Ctrl_L; +#ifdef FEAT_TERMINAL + else if (terminal_is_active()) + c = K_CANCEL; +#endif + else if ((State & CMDLINE) +#ifdef FEAT_CMDWIN + || (cmdwin_type > 0 && tc == ESC) +#endif + ) + c = Ctrl_C; + else + c = ESC; +#ifdef FEAT_CMDWIN + tc = c; +#endif + break; + } + +/* + * get a character: 3. from the user - update display + */ + /* In insert mode a screen update is skipped when characters + * are still available. But when those available characters + * are part of a mapping, and we are going to do a blocking + * wait here. Need to update the screen to display the + * changed text so far. Also for when 'lazyredraw' is set and + * redrawing was postponed because there was something in the + * input buffer (e.g., termresponse). */ + if (((State & INSERT) != 0 || p_lz) && (State & CMDLINE) == 0 + && advance && must_redraw != 0 && !need_wait_return) + { + update_screen(0); + setcursor(); /* put cursor back where it belongs */ + } + + /* + * If we have a partial match (and are going to wait for more + * input from the user), show the partially matched characters + * to the user with showcmd. + */ +#ifdef FEAT_CMDL_INFO + i = 0; +#endif + c1 = 0; + if (typebuf.tb_len > 0 && advance && !exmode_active) + { + if (((State & (NORMAL | INSERT)) || State == LANGMAP) + && State != HITRETURN) + { + /* this looks nice when typing a dead character map */ + if (State & INSERT + && ptr2cells(typebuf.tb_buf + typebuf.tb_off + + typebuf.tb_len - 1) == 1) + { + edit_putchar(typebuf.tb_buf[typebuf.tb_off + + typebuf.tb_len - 1], FALSE); + setcursor(); /* put cursor back where it belongs */ + c1 = 1; + } +#ifdef FEAT_CMDL_INFO + /* need to use the col and row from above here */ + old_wcol = curwin->w_wcol; + old_wrow = curwin->w_wrow; + curwin->w_wcol = new_wcol; + curwin->w_wrow = new_wrow; + push_showcmd(); + if (typebuf.tb_len > SHOWCMD_COLS) + i = typebuf.tb_len - SHOWCMD_COLS; + while (i < typebuf.tb_len) + (void)add_to_showcmd(typebuf.tb_buf[typebuf.tb_off + + i++]); + curwin->w_wcol = old_wcol; + curwin->w_wrow = old_wrow; +#endif + } + + /* this looks nice when typing a dead character map */ + if ((State & CMDLINE) +#if defined(FEAT_CRYPT) || defined(FEAT_EVAL) + && cmdline_star == 0 +#endif + && ptr2cells(typebuf.tb_buf + typebuf.tb_off + + typebuf.tb_len - 1) == 1) + { + putcmdline(typebuf.tb_buf[typebuf.tb_off + + typebuf.tb_len - 1], FALSE); + c1 = 1; + } + } + +/* + * get a character: 3. from the user - get it + */ + if (typebuf.tb_len == 0) + // timedout may have been set while waiting for a mapping + // that has a <Nop> RHS. + timedout = FALSE; + + wait_tb_len = typebuf.tb_len; + c = inchar(typebuf.tb_buf + typebuf.tb_off + typebuf.tb_len, + typebuf.tb_buflen - typebuf.tb_off - typebuf.tb_len - 1, + !advance + ? 0 + : ((typebuf.tb_len == 0 + || !(p_timeout || (p_ttimeout + && keylen == KEYLEN_PART_KEY))) + ? -1L + : ((keylen == KEYLEN_PART_KEY && p_ttm >= 0) + ? p_ttm + : p_tm))); + +#ifdef FEAT_CMDL_INFO + if (i != 0) + pop_showcmd(); +#endif + if (c1 == 1) + { + if (State & INSERT) + edit_unputchar(); + if (State & CMDLINE) + unputcmdline(); + else + setcursor(); /* put cursor back where it belongs */ + } + + if (c < 0) + continue; /* end of input script reached */ + if (c == NUL) /* no character available */ + { + if (!advance) + break; + if (wait_tb_len > 0) /* timed out */ + { + timedout = TRUE; + continue; + } + } + else + { /* allow mapping for just typed characters */ + while (typebuf.tb_buf[typebuf.tb_off + + typebuf.tb_len] != NUL) + typebuf.tb_noremap[typebuf.tb_off + + typebuf.tb_len++] = RM_YES; +#ifdef HAVE_INPUT_METHOD + /* Get IM status right after getting keys, not after the + * timeout for a mapping (focus may be lost by then). */ + vgetc_im_active = im_get_status(); +#endif + } + } /* for (;;) */ + } /* if (!character from stuffbuf) */ + + /* if advance is FALSE don't loop on NULs */ + } while ((c < 0 && c != K_CANCEL) || (advance && c == NUL)); + + /* + * The "INSERT" message is taken care of here: + * if we return an ESC to exit insert mode, the message is deleted + * if we don't return an ESC but deleted the message before, redisplay it + */ + if (advance && p_smd && msg_silent == 0 && (State & INSERT)) + { + if (c == ESC && !mode_deleted && !no_mapping && mode_displayed) + { + if (typebuf.tb_len && !KeyTyped) + redraw_cmdline = TRUE; /* delete mode later */ + else + unshowmode(FALSE); + } + else if (c != ESC && mode_deleted) + { + if (typebuf.tb_len && !KeyTyped) + redraw_cmdline = TRUE; /* show mode later */ + else + showmode(); + } + } +#ifdef FEAT_GUI + /* may unshow different cursor shape */ + if (gui.in_use && shape_changed) + gui_update_cursor(TRUE, FALSE); +#endif + + --vgetc_busy; + + return c; +} + +/* + * inchar() - get one character from + * 1. a scriptfile + * 2. the keyboard + * + * As much characters as we can get (upto 'maxlen') are put in "buf" and + * NUL terminated (buffer length must be 'maxlen' + 1). + * Minimum for "maxlen" is 3!!!! + * + * "tb_change_cnt" is the value of typebuf.tb_change_cnt if "buf" points into + * it. When typebuf.tb_change_cnt changes (e.g., when a message is received + * from a remote client) "buf" can no longer be used. "tb_change_cnt" is 0 + * otherwise. + * + * If we got an interrupt all input is read until none is available. + * + * If wait_time == 0 there is no waiting for the char. + * If wait_time == n we wait for n msec for a character to arrive. + * If wait_time == -1 we wait forever for a character to arrive. + * + * Return the number of obtained characters. + * Return -1 when end of input script reached. + */ + static int +inchar( + char_u *buf, + int maxlen, + long wait_time) /* milli seconds */ +{ + int len = 0; /* init for GCC */ + int retesc = FALSE; /* return ESC with gotint */ + int script_char; + int tb_change_cnt = typebuf.tb_change_cnt; + + if (wait_time == -1L || wait_time > 100L) /* flush output before waiting */ + { + cursor_on(); + out_flush_cursor(FALSE, FALSE); +#if defined(FEAT_GUI) && defined(FEAT_MOUSESHAPE) + if (gui.in_use && postponed_mouseshape) + update_mouseshape(-1); +#endif + } + + /* + * Don't reset these when at the hit-return prompt, otherwise a endless + * recursive loop may result (write error in swapfile, hit-return, timeout + * on char wait, flush swapfile, write error....). + */ + if (State != HITRETURN) + { + did_outofmem_msg = FALSE; /* display out of memory message (again) */ + did_swapwrite_msg = FALSE; /* display swap file write error again */ + } + undo_off = FALSE; /* restart undo now */ + + /* + * Get a character from a script file if there is one. + * If interrupted: Stop reading script files, close them all. + */ + script_char = -1; + while (scriptin[curscript] != NULL && script_char < 0 +#ifdef FEAT_EVAL + && !ignore_script +#endif + ) + { + +#ifdef MESSAGE_QUEUE + parse_queued_messages(); +#endif + + if (got_int || (script_char = getc(scriptin[curscript])) < 0) + { + /* Reached EOF. + * Careful: closescript() frees typebuf.tb_buf[] and buf[] may + * point inside typebuf.tb_buf[]. Don't use buf[] after this! */ + closescript(); + /* + * When reading script file is interrupted, return an ESC to get + * back to normal mode. + * Otherwise return -1, because typebuf.tb_buf[] has changed. + */ + if (got_int) + retesc = TRUE; + else + return -1; + } + else + { + buf[0] = script_char; + len = 1; + } + } + + if (script_char < 0) /* did not get a character from script */ + { + /* + * If we got an interrupt, skip all previously typed characters and + * return TRUE if quit reading script file. + * Stop reading typeahead when a single CTRL-C was read, + * fill_input_buf() returns this when not able to read from stdin. + * Don't use buf[] here, closescript() may have freed typebuf.tb_buf[] + * and buf may be pointing inside typebuf.tb_buf[]. + */ + if (got_int) + { +#define DUM_LEN MAXMAPLEN * 3 + 3 + char_u dum[DUM_LEN + 1]; + + for (;;) + { + len = ui_inchar(dum, DUM_LEN, 0L, 0); + if (len == 0 || (len == 1 && dum[0] == 3)) + break; + } + return retesc; + } + + /* + * Always flush the output characters when getting input characters + * from the user and not just peeking. + */ + if (wait_time == -1L || wait_time > 10L) + out_flush(); + + /* + * Fill up to a third of the buffer, because each character may be + * tripled below. + */ + len = ui_inchar(buf, maxlen / 3, wait_time, tb_change_cnt); + } + + /* If the typebuf was changed further down, it is like nothing was added by + * this call. */ + if (typebuf_changed(tb_change_cnt)) + return 0; + + /* Note the change in the typeahead buffer, this matters for when + * vgetorpeek() is called recursively, e.g. using getchar(1) in a timer + * function. */ + if (len > 0 && ++typebuf.tb_change_cnt == 0) + typebuf.tb_change_cnt = 1; + + return fix_input_buffer(buf, len); +} + +/* + * Fix typed characters for use by vgetc() and check_termcode(). + * buf[] must have room to triple the number of bytes! + * Returns the new length. + */ + int +fix_input_buffer(char_u *buf, int len) +{ + int i; + char_u *p = buf; + + /* + * Two characters are special: NUL and K_SPECIAL. + * When compiled With the GUI CSI is also special. + * Replace NUL by K_SPECIAL KS_ZERO KE_FILLER + * Replace K_SPECIAL by K_SPECIAL KS_SPECIAL KE_FILLER + * Replace CSI by K_SPECIAL KS_EXTRA KE_CSI + */ + for (i = len; --i >= 0; ++p) + { +#ifdef FEAT_GUI + /* When the GUI is used any character can come after a CSI, don't + * escape it. */ + if (gui.in_use && p[0] == CSI && i >= 2) + { + p += 2; + i -= 2; + } + /* When the GUI is not used CSI needs to be escaped. */ + else if (!gui.in_use && p[0] == CSI) + { + mch_memmove(p + 3, p + 1, (size_t)i); + *p++ = K_SPECIAL; + *p++ = KS_EXTRA; + *p = (int)KE_CSI; + len += 2; + } + else +#endif + if (p[0] == NUL || (p[0] == K_SPECIAL + /* timeout may generate K_CURSORHOLD */ + && (i < 2 || p[1] != KS_EXTRA || p[2] != (int)KE_CURSORHOLD) +#if defined(WIN3264) && !defined(FEAT_GUI) + /* Win32 console passes modifiers */ + && (i < 2 || p[1] != KS_MODIFIER) +#endif + )) + { + mch_memmove(p + 3, p + 1, (size_t)i); + p[2] = K_THIRD(p[0]); + p[1] = K_SECOND(p[0]); + p[0] = K_SPECIAL; + p += 2; + len += 2; + } + } + *p = NUL; /* add trailing NUL */ + return len; +} + +#if defined(USE_INPUT_BUF) || defined(PROTO) +/* + * Return TRUE when bytes are in the input buffer or in the typeahead buffer. + * Normally the input buffer would be sufficient, but the server_to_input_buf() + * or feedkeys() may insert characters in the typeahead buffer while we are + * waiting for input to arrive. + */ + int +input_available(void) +{ + return (!vim_is_input_buf_empty() +# if defined(FEAT_CLIENTSERVER) || defined(FEAT_EVAL) + || typebuf_was_filled +# endif + ); +} +#endif + +/* + * map[!] : show all key mappings + * map[!] {lhs} : show key mapping for {lhs} + * map[!] {lhs} {rhs} : set key mapping for {lhs} to {rhs} + * noremap[!] {lhs} {rhs} : same, but no remapping for {rhs} + * unmap[!] {lhs} : remove key mapping for {lhs} + * abbr : show all abbreviations + * abbr {lhs} : show abbreviations for {lhs} + * abbr {lhs} {rhs} : set abbreviation for {lhs} to {rhs} + * noreabbr {lhs} {rhs} : same, but no remapping for {rhs} + * unabbr {lhs} : remove abbreviation for {lhs} + * + * maptype: 0 for :map, 1 for :unmap, 2 for noremap. + * + * arg is pointer to any arguments. Note: arg cannot be a read-only string, + * it will be modified. + * + * for :map mode is NORMAL + VISUAL + SELECTMODE + OP_PENDING + * for :map! mode is INSERT + CMDLINE + * for :cmap mode is CMDLINE + * for :imap mode is INSERT + * for :lmap mode is LANGMAP + * for :nmap mode is NORMAL + * for :vmap mode is VISUAL + SELECTMODE + * for :xmap mode is VISUAL + * for :smap mode is SELECTMODE + * for :omap mode is OP_PENDING + * for :tmap mode is TERMINAL + * + * for :abbr mode is INSERT + CMDLINE + * for :iabbr mode is INSERT + * for :cabbr mode is CMDLINE + * + * Return 0 for success + * 1 for invalid arguments + * 2 for no match + * 4 for out of mem + * 5 for entry not unique + */ + int +do_map( + int maptype, + char_u *arg, + int mode, + int abbrev) /* not a mapping but an abbreviation */ +{ + char_u *keys; + mapblock_T *mp, **mpp; + char_u *rhs; + char_u *p; + int n; + int len = 0; /* init for GCC */ + char_u *newstr; + int hasarg; + int haskey; + int did_it = FALSE; +#ifdef FEAT_LOCALMAP + int did_local = FALSE; +#endif + int round; + char_u *keys_buf = NULL; + char_u *arg_buf = NULL; + int retval = 0; + int do_backslash; + int hash; + int new_hash; + mapblock_T **abbr_table; + mapblock_T **map_table; + int unique = FALSE; + int nowait = FALSE; + int silent = FALSE; + int special = FALSE; +#ifdef FEAT_EVAL + int expr = FALSE; +#endif + int noremap; + char_u *orig_rhs; + + keys = arg; + map_table = maphash; + abbr_table = &first_abbr; + + /* For ":noremap" don't remap, otherwise do remap. */ + if (maptype == 2) + noremap = REMAP_NONE; + else + noremap = REMAP_YES; + + /* Accept <buffer>, <nowait>, <silent>, <expr> <script> and <unique> in + * any order. */ + for (;;) + { +#ifdef FEAT_LOCALMAP + /* + * Check for "<buffer>": mapping local to buffer. + */ + if (STRNCMP(keys, "<buffer>", 8) == 0) + { + keys = skipwhite(keys + 8); + map_table = curbuf->b_maphash; + abbr_table = &curbuf->b_first_abbr; + continue; + } +#endif + + /* + * Check for "<nowait>": don't wait for more characters. + */ + if (STRNCMP(keys, "<nowait>", 8) == 0) + { + keys = skipwhite(keys + 8); + nowait = TRUE; + continue; + } + + /* + * Check for "<silent>": don't echo commands. + */ + if (STRNCMP(keys, "<silent>", 8) == 0) + { + keys = skipwhite(keys + 8); + silent = TRUE; + continue; + } + + /* + * Check for "<special>": accept special keys in <> + */ + if (STRNCMP(keys, "<special>", 9) == 0) + { + keys = skipwhite(keys + 9); + special = TRUE; + continue; + } + +#ifdef FEAT_EVAL + /* + * Check for "<script>": remap script-local mappings only + */ + if (STRNCMP(keys, "<script>", 8) == 0) + { + keys = skipwhite(keys + 8); + noremap = REMAP_SCRIPT; + continue; + } + + /* + * Check for "<expr>": {rhs} is an expression. + */ + if (STRNCMP(keys, "<expr>", 6) == 0) + { + keys = skipwhite(keys + 6); + expr = TRUE; + continue; + } +#endif + /* + * Check for "<unique>": don't overwrite an existing mapping. + */ + if (STRNCMP(keys, "<unique>", 8) == 0) + { + keys = skipwhite(keys + 8); + unique = TRUE; + continue; + } + break; + } + + validate_maphash(); + + /* + * Find end of keys and skip CTRL-Vs (and backslashes) in it. + * Accept backslash like CTRL-V when 'cpoptions' does not contain 'B'. + * with :unmap white space is included in the keys, no argument possible. + */ + p = keys; + do_backslash = (vim_strchr(p_cpo, CPO_BSLASH) == NULL); + while (*p && (maptype == 1 || !VIM_ISWHITE(*p))) + { + if ((p[0] == Ctrl_V || (do_backslash && p[0] == '\\')) && + p[1] != NUL) + ++p; /* skip CTRL-V or backslash */ + ++p; + } + if (*p != NUL) + *p++ = NUL; + + p = skipwhite(p); + rhs = p; + hasarg = (*rhs != NUL); + haskey = (*keys != NUL); + + /* check for :unmap without argument */ + if (maptype == 1 && !haskey) + { + retval = 1; + goto theend; + } + + /* + * If mapping has been given as ^V<C_UP> say, then replace the term codes + * with the appropriate two bytes. If it is a shifted special key, unshift + * it too, giving another two bytes. + * replace_termcodes() may move the result to allocated memory, which + * needs to be freed later (*keys_buf and *arg_buf). + * replace_termcodes() also removes CTRL-Vs and sometimes backslashes. + */ + if (haskey) + keys = replace_termcodes(keys, &keys_buf, TRUE, TRUE, special); + orig_rhs = rhs; + if (hasarg) + { + if (STRICMP(rhs, "<nop>") == 0) /* "<Nop>" means nothing */ + rhs = (char_u *)""; + else + rhs = replace_termcodes(rhs, &arg_buf, FALSE, TRUE, special); + } + +#ifdef FEAT_FKMAP + /* + * When in right-to-left mode and alternate keymap option set, + * reverse the character flow in the rhs in Farsi. + */ + if (p_altkeymap && curwin->w_p_rl) + lrswap(rhs); +#endif + + /* + * check arguments and translate function keys + */ + if (haskey) + { + len = (int)STRLEN(keys); + if (len > MAXMAPLEN) /* maximum length of MAXMAPLEN chars */ + { + retval = 1; + goto theend; + } + + if (abbrev && maptype != 1) + { + /* + * If an abbreviation ends in a keyword character, the + * rest must be all keyword-char or all non-keyword-char. + * Otherwise we won't be able to find the start of it in a + * vi-compatible way. + */ + if (has_mbyte) + { + int first, last; + int same = -1; + + first = vim_iswordp(keys); + last = first; + p = keys + (*mb_ptr2len)(keys); + n = 1; + while (p < keys + len) + { + ++n; /* nr of (multi-byte) chars */ + last = vim_iswordp(p); /* type of last char */ + if (same == -1 && last != first) + same = n - 1; /* count of same char type */ + p += (*mb_ptr2len)(p); + } + if (last && n > 2 && same >= 0 && same < n - 1) + { + retval = 1; + goto theend; + } + } + else if (vim_iswordc(keys[len - 1])) // ends in keyword char + for (n = 0; n < len - 2; ++n) + if (vim_iswordc(keys[n]) != vim_iswordc(keys[len - 2])) + { + retval = 1; + goto theend; + } + /* An abbreviation cannot contain white space. */ + for (n = 0; n < len; ++n) + if (VIM_ISWHITE(keys[n])) + { + retval = 1; + goto theend; + } + } + } + + if (haskey && hasarg && abbrev) /* if we will add an abbreviation */ + no_abbr = FALSE; /* reset flag that indicates there are + no abbreviations */ + + if (!haskey || (maptype != 1 && !hasarg)) + msg_start(); + +#ifdef FEAT_LOCALMAP + /* + * Check if a new local mapping wasn't already defined globally. + */ + if (map_table == curbuf->b_maphash && haskey && hasarg && maptype != 1) + { + /* need to loop over all global hash lists */ + for (hash = 0; hash < 256 && !got_int; ++hash) + { + if (abbrev) + { + if (hash != 0) /* there is only one abbreviation list */ + break; + mp = first_abbr; + } + else + mp = maphash[hash]; + for ( ; mp != NULL && !got_int; mp = mp->m_next) + { + /* check entries with the same mode */ + if ((mp->m_mode & mode) != 0 + && mp->m_keylen == len + && unique + && STRNCMP(mp->m_keys, keys, (size_t)len) == 0) + { + if (abbrev) + semsg(_("E224: global abbreviation already exists for %s"), + mp->m_keys); + else + semsg(_("E225: global mapping already exists for %s"), + mp->m_keys); + retval = 5; + goto theend; + } + } + } + } + + /* + * When listing global mappings, also list buffer-local ones here. + */ + if (map_table != curbuf->b_maphash && !hasarg && maptype != 1) + { + /* need to loop over all global hash lists */ + for (hash = 0; hash < 256 && !got_int; ++hash) + { + if (abbrev) + { + if (hash != 0) /* there is only one abbreviation list */ + break; + mp = curbuf->b_first_abbr; + } + else + mp = curbuf->b_maphash[hash]; + for ( ; mp != NULL && !got_int; mp = mp->m_next) + { + /* check entries with the same mode */ + if ((mp->m_mode & mode) != 0) + { + if (!haskey) /* show all entries */ + { + showmap(mp, TRUE); + did_local = TRUE; + } + else + { + n = mp->m_keylen; + if (STRNCMP(mp->m_keys, keys, + (size_t)(n < len ? n : len)) == 0) + { + showmap(mp, TRUE); + did_local = TRUE; + } + } + } + } + } + } +#endif + + /* + * Find an entry in the maphash[] list that matches. + * For :unmap we may loop two times: once to try to unmap an entry with a + * matching 'from' part, a second time, if the first fails, to unmap an + * entry with a matching 'to' part. This was done to allow ":ab foo bar" + * to be unmapped by typing ":unab foo", where "foo" will be replaced by + * "bar" because of the abbreviation. + */ + for (round = 0; (round == 0 || maptype == 1) && round <= 1 + && !did_it && !got_int; ++round) + { + /* need to loop over all hash lists */ + for (hash = 0; hash < 256 && !got_int; ++hash) + { + if (abbrev) + { + if (hash > 0) /* there is only one abbreviation list */ + break; + mpp = abbr_table; + } + else + mpp = &(map_table[hash]); + for (mp = *mpp; mp != NULL && !got_int; mp = *mpp) + { + + if (!(mp->m_mode & mode)) /* skip entries with wrong mode */ + { + mpp = &(mp->m_next); + continue; + } + if (!haskey) /* show all entries */ + { + showmap(mp, map_table != maphash); + did_it = TRUE; + } + else /* do we have a match? */ + { + if (round) /* second round: Try unmap "rhs" string */ + { + n = (int)STRLEN(mp->m_str); + p = mp->m_str; + } + else + { + n = mp->m_keylen; + p = mp->m_keys; + } + if (STRNCMP(p, keys, (size_t)(n < len ? n : len)) == 0) + { + if (maptype == 1) /* delete entry */ + { + /* Only accept a full match. For abbreviations we + * ignore trailing space when matching with the + * "lhs", since an abbreviation can't have + * trailing space. */ + if (n != len && (!abbrev || round || n > len + || *skipwhite(keys + n) != NUL)) + { + mpp = &(mp->m_next); + continue; + } + /* + * We reset the indicated mode bits. If nothing is + * left the entry is deleted below. + */ + mp->m_mode &= ~mode; + did_it = TRUE; /* remember we did something */ + } + else if (!hasarg) /* show matching entry */ + { + showmap(mp, map_table != maphash); + did_it = TRUE; + } + else if (n != len) /* new entry is ambiguous */ + { + mpp = &(mp->m_next); + continue; + } + else if (unique) + { + if (abbrev) + semsg(_("E226: abbreviation already exists for %s"), + p); + else + semsg(_("E227: mapping already exists for %s"), p); + retval = 5; + goto theend; + } + else /* new rhs for existing entry */ + { + mp->m_mode &= ~mode; /* remove mode bits */ + if (mp->m_mode == 0 && !did_it) /* reuse entry */ + { + newstr = vim_strsave(rhs); + if (newstr == NULL) + { + retval = 4; /* no mem */ + goto theend; + } + vim_free(mp->m_str); + mp->m_str = newstr; + vim_free(mp->m_orig_str); + mp->m_orig_str = vim_strsave(orig_rhs); + mp->m_noremap = noremap; + mp->m_nowait = nowait; + mp->m_silent = silent; + mp->m_mode = mode; +#ifdef FEAT_EVAL + mp->m_expr = expr; + mp->m_script_ctx = current_sctx; + mp->m_script_ctx.sc_lnum += sourcing_lnum; +#endif + did_it = TRUE; + } + } + if (mp->m_mode == 0) /* entry can be deleted */ + { + map_free(mpp); + continue; /* continue with *mpp */ + } + + /* + * May need to put this entry into another hash list. + */ + new_hash = MAP_HASH(mp->m_mode, mp->m_keys[0]); + if (!abbrev && new_hash != hash) + { + *mpp = mp->m_next; + mp->m_next = map_table[new_hash]; + map_table[new_hash] = mp; + + continue; /* continue with *mpp */ + } + } + } + mpp = &(mp->m_next); + } + } + } + + if (maptype == 1) /* delete entry */ + { + if (!did_it) + retval = 2; /* no match */ + else if (*keys == Ctrl_C) + { + /* If CTRL-C has been unmapped, reuse it for Interrupting. */ +#ifdef FEAT_LOCALMAP + if (map_table == curbuf->b_maphash) + curbuf->b_mapped_ctrl_c &= ~mode; + else +#endif + mapped_ctrl_c &= ~mode; + } + goto theend; + } + + if (!haskey || !hasarg) /* print entries */ + { + if (!did_it +#ifdef FEAT_LOCALMAP + && !did_local +#endif + ) + { + if (abbrev) + msg(_("No abbreviation found")); + else + msg(_("No mapping found")); + } + goto theend; /* listing finished */ + } + + if (did_it) /* have added the new entry already */ + goto theend; + + /* + * Get here when adding a new entry to the maphash[] list or abbrlist. + */ + mp = (mapblock_T *)alloc((unsigned)sizeof(mapblock_T)); + if (mp == NULL) + { + retval = 4; /* no mem */ + goto theend; + } + + /* If CTRL-C has been mapped, don't always use it for Interrupting. */ + if (*keys == Ctrl_C) + { +#ifdef FEAT_LOCALMAP + if (map_table == curbuf->b_maphash) + curbuf->b_mapped_ctrl_c |= mode; + else +#endif + mapped_ctrl_c |= mode; + } + + mp->m_keys = vim_strsave(keys); + mp->m_str = vim_strsave(rhs); + mp->m_orig_str = vim_strsave(orig_rhs); + if (mp->m_keys == NULL || mp->m_str == NULL) + { + vim_free(mp->m_keys); + vim_free(mp->m_str); + vim_free(mp->m_orig_str); + vim_free(mp); + retval = 4; /* no mem */ + goto theend; + } + mp->m_keylen = (int)STRLEN(mp->m_keys); + mp->m_noremap = noremap; + mp->m_nowait = nowait; + mp->m_silent = silent; + mp->m_mode = mode; +#ifdef FEAT_EVAL + mp->m_expr = expr; + mp->m_script_ctx = current_sctx; + mp->m_script_ctx.sc_lnum += sourcing_lnum; +#endif + + /* add the new entry in front of the abbrlist or maphash[] list */ + if (abbrev) + { + mp->m_next = *abbr_table; + *abbr_table = mp; + } + else + { + n = MAP_HASH(mp->m_mode, mp->m_keys[0]); + mp->m_next = map_table[n]; + map_table[n] = mp; + } + +theend: + vim_free(keys_buf); + vim_free(arg_buf); + return retval; +} + +/* + * Delete one entry from the abbrlist or maphash[]. + * "mpp" is a pointer to the m_next field of the PREVIOUS entry! + */ + static void +map_free(mapblock_T **mpp) +{ + mapblock_T *mp; + + mp = *mpp; + vim_free(mp->m_keys); + vim_free(mp->m_str); + vim_free(mp->m_orig_str); + *mpp = mp->m_next; + vim_free(mp); +} + +/* + * Initialize maphash[] for first use. + */ + static void +validate_maphash(void) +{ + if (!maphash_valid) + { + vim_memset(maphash, 0, sizeof(maphash)); + maphash_valid = TRUE; + } +} + +/* + * Get the mapping mode from the command name. + */ + int +get_map_mode(char_u **cmdp, int forceit) +{ + char_u *p; + int modec; + int mode; + + p = *cmdp; + modec = *p++; + if (modec == 'i') + mode = INSERT; /* :imap */ + else if (modec == 'l') + mode = LANGMAP; /* :lmap */ + else if (modec == 'c') + mode = CMDLINE; /* :cmap */ + else if (modec == 'n' && *p != 'o') /* avoid :noremap */ + mode = NORMAL; /* :nmap */ + else if (modec == 'v') + mode = VISUAL + SELECTMODE; /* :vmap */ + else if (modec == 'x') + mode = VISUAL; /* :xmap */ + else if (modec == 's') + mode = SELECTMODE; /* :smap */ + else if (modec == 'o') + mode = OP_PENDING; /* :omap */ + else if (modec == 't') + mode = TERMINAL; /* :tmap */ + else + { + --p; + if (forceit) + mode = INSERT + CMDLINE; /* :map ! */ + else + mode = VISUAL + SELECTMODE + NORMAL + OP_PENDING;/* :map */ + } + + *cmdp = p; + return mode; +} + +/* + * Clear all mappings or abbreviations. + * 'abbr' should be FALSE for mappings, TRUE for abbreviations. + */ + void +map_clear( + char_u *cmdp, + char_u *arg UNUSED, + int forceit, + int abbr) +{ + int mode; +#ifdef FEAT_LOCALMAP + int local; + + local = (STRCMP(arg, "<buffer>") == 0); + if (!local && *arg != NUL) + { + emsg(_(e_invarg)); + return; + } +#endif + + mode = get_map_mode(&cmdp, forceit); + map_clear_int(curbuf, mode, +#ifdef FEAT_LOCALMAP + local, +#else + FALSE, +#endif + abbr); +} + +/* + * Clear all mappings in "mode". + */ + void +map_clear_int( + buf_T *buf UNUSED, /* buffer for local mappings */ + int mode, /* mode in which to delete */ + int local UNUSED, /* TRUE for buffer-local mappings */ + int abbr) /* TRUE for abbreviations */ +{ + mapblock_T *mp, **mpp; + int hash; + int new_hash; + + validate_maphash(); + + for (hash = 0; hash < 256; ++hash) + { + if (abbr) + { + if (hash > 0) /* there is only one abbrlist */ + break; +#ifdef FEAT_LOCALMAP + if (local) + mpp = &buf->b_first_abbr; + else +#endif + mpp = &first_abbr; + } + else + { +#ifdef FEAT_LOCALMAP + if (local) + mpp = &buf->b_maphash[hash]; + else +#endif + mpp = &maphash[hash]; + } + while (*mpp != NULL) + { + mp = *mpp; + if (mp->m_mode & mode) + { + mp->m_mode &= ~mode; + if (mp->m_mode == 0) /* entry can be deleted */ + { + map_free(mpp); + continue; + } + /* + * May need to put this entry into another hash list. + */ + new_hash = MAP_HASH(mp->m_mode, mp->m_keys[0]); + if (!abbr && new_hash != hash) + { + *mpp = mp->m_next; +#ifdef FEAT_LOCALMAP + if (local) + { + mp->m_next = buf->b_maphash[new_hash]; + buf->b_maphash[new_hash] = mp; + } + else +#endif + { + mp->m_next = maphash[new_hash]; + maphash[new_hash] = mp; + } + continue; /* continue with *mpp */ + } + } + mpp = &(mp->m_next); + } + } +} + +/* + * Return characters to represent the map mode in an allocated string. + * Returns NULL when out of memory. + */ + char_u * +map_mode_to_chars(int mode) +{ + garray_T mapmode; + + ga_init2(&mapmode, 1, 7); + + if ((mode & (INSERT + CMDLINE)) == INSERT + CMDLINE) + ga_append(&mapmode, '!'); /* :map! */ + else if (mode & INSERT) + ga_append(&mapmode, 'i'); /* :imap */ + else if (mode & LANGMAP) + ga_append(&mapmode, 'l'); /* :lmap */ + else if (mode & CMDLINE) + ga_append(&mapmode, 'c'); /* :cmap */ + else if ((mode & (NORMAL + VISUAL + SELECTMODE + OP_PENDING)) + == NORMAL + VISUAL + SELECTMODE + OP_PENDING) + ga_append(&mapmode, ' '); /* :map */ + else + { + if (mode & NORMAL) + ga_append(&mapmode, 'n'); /* :nmap */ + if (mode & OP_PENDING) + ga_append(&mapmode, 'o'); /* :omap */ + if ((mode & (VISUAL + SELECTMODE)) == VISUAL + SELECTMODE) + ga_append(&mapmode, 'v'); /* :vmap */ + else + { + if (mode & VISUAL) + ga_append(&mapmode, 'x'); /* :xmap */ + if (mode & SELECTMODE) + ga_append(&mapmode, 's'); /* :smap */ + } + } + + ga_append(&mapmode, NUL); + return (char_u *)mapmode.ga_data; +} + + static void +showmap( + mapblock_T *mp, + int local) /* TRUE for buffer-local map */ +{ + int len = 1; + char_u *mapchars; + + if (message_filtered(mp->m_keys) && message_filtered(mp->m_str)) + return; + + if (msg_didout || msg_silent != 0) + { + msg_putchar('\n'); + if (got_int) /* 'q' typed at MORE prompt */ + return; + } + + mapchars = map_mode_to_chars(mp->m_mode); + if (mapchars != NULL) + { + msg_puts((char *)mapchars); + len = (int)STRLEN(mapchars); + vim_free(mapchars); + } + + while (++len <= 3) + msg_putchar(' '); + + /* Display the LHS. Get length of what we write. */ + len = msg_outtrans_special(mp->m_keys, TRUE); + do + { + msg_putchar(' '); /* padd with blanks */ + ++len; + } while (len < 12); + + if (mp->m_noremap == REMAP_NONE) + msg_puts_attr("*", HL_ATTR(HLF_8)); + else if (mp->m_noremap == REMAP_SCRIPT) + msg_puts_attr("&", HL_ATTR(HLF_8)); + else + msg_putchar(' '); + + if (local) + msg_putchar('@'); + else + msg_putchar(' '); + + /* Use FALSE below if we only want things like <Up> to show up as such on + * the rhs, and not M-x etc, TRUE gets both -- webb */ + if (*mp->m_str == NUL) + msg_puts_attr("<Nop>", HL_ATTR(HLF_8)); + else + { + /* Remove escaping of CSI, because "m_str" is in a format to be used + * as typeahead. */ + char_u *s = vim_strsave(mp->m_str); + if (s != NULL) + { + vim_unescape_csi(s); + msg_outtrans_special(s, FALSE); + vim_free(s); + } + } +#ifdef FEAT_EVAL + if (p_verbose > 0) + last_set_msg(mp->m_script_ctx); +#endif + out_flush(); /* show one line at a time */ +} + +#if defined(FEAT_EVAL) || defined(PROTO) +/* + * Return TRUE if a map exists that has "str" in the rhs for mode "modechars". + * Recognize termcap codes in "str". + * Also checks mappings local to the current buffer. + */ + int +map_to_exists(char_u *str, char_u *modechars, int abbr) +{ + int mode = 0; + char_u *rhs; + char_u *buf; + int retval; + + rhs = replace_termcodes(str, &buf, FALSE, TRUE, FALSE); + + if (vim_strchr(modechars, 'n') != NULL) + mode |= NORMAL; + if (vim_strchr(modechars, 'v') != NULL) + mode |= VISUAL + SELECTMODE; + if (vim_strchr(modechars, 'x') != NULL) + mode |= VISUAL; + if (vim_strchr(modechars, 's') != NULL) + mode |= SELECTMODE; + if (vim_strchr(modechars, 'o') != NULL) + mode |= OP_PENDING; + if (vim_strchr(modechars, 'i') != NULL) + mode |= INSERT; + if (vim_strchr(modechars, 'l') != NULL) + mode |= LANGMAP; + if (vim_strchr(modechars, 'c') != NULL) + mode |= CMDLINE; + + retval = map_to_exists_mode(rhs, mode, abbr); + vim_free(buf); + + return retval; +} +#endif + +/* + * Return TRUE if a map exists that has "str" in the rhs for mode "mode". + * Also checks mappings local to the current buffer. + */ + int +map_to_exists_mode(char_u *rhs, int mode, int abbr) +{ + mapblock_T *mp; + int hash; +# ifdef FEAT_LOCALMAP + int exp_buffer = FALSE; + + validate_maphash(); + + /* Do it twice: once for global maps and once for local maps. */ + for (;;) + { +# endif + for (hash = 0; hash < 256; ++hash) + { + if (abbr) + { + if (hash > 0) /* there is only one abbr list */ + break; +#ifdef FEAT_LOCALMAP + if (exp_buffer) + mp = curbuf->b_first_abbr; + else +#endif + mp = first_abbr; + } +# ifdef FEAT_LOCALMAP + else if (exp_buffer) + mp = curbuf->b_maphash[hash]; +# endif + else + mp = maphash[hash]; + for (; mp; mp = mp->m_next) + { + if ((mp->m_mode & mode) + && strstr((char *)mp->m_str, (char *)rhs) != NULL) + return TRUE; + } + } +# ifdef FEAT_LOCALMAP + if (exp_buffer) + break; + exp_buffer = TRUE; + } +# endif + + return FALSE; +} + +#if defined(FEAT_CMDL_COMPL) || defined(PROTO) +/* + * Used below when expanding mapping/abbreviation names. + */ +static int expand_mapmodes = 0; +static int expand_isabbrev = 0; +#ifdef FEAT_LOCALMAP +static int expand_buffer = FALSE; +#endif + +/* + * Work out what to complete when doing command line completion of mapping + * or abbreviation names. + */ + char_u * +set_context_in_map_cmd( + expand_T *xp, + char_u *cmd, + char_u *arg, + int forceit, /* TRUE if '!' given */ + int isabbrev, /* TRUE if abbreviation */ + int isunmap, /* TRUE if unmap/unabbrev command */ + cmdidx_T cmdidx) +{ + if (forceit && cmdidx != CMD_map && cmdidx != CMD_unmap) + xp->xp_context = EXPAND_NOTHING; + else + { + if (isunmap) + expand_mapmodes = get_map_mode(&cmd, forceit || isabbrev); + else + { + expand_mapmodes = INSERT + CMDLINE; + if (!isabbrev) + expand_mapmodes += VISUAL + SELECTMODE + NORMAL + OP_PENDING; + } + expand_isabbrev = isabbrev; + xp->xp_context = EXPAND_MAPPINGS; +#ifdef FEAT_LOCALMAP + expand_buffer = FALSE; +#endif + for (;;) + { +#ifdef FEAT_LOCALMAP + if (STRNCMP(arg, "<buffer>", 8) == 0) + { + expand_buffer = TRUE; + arg = skipwhite(arg + 8); + continue; + } +#endif + if (STRNCMP(arg, "<unique>", 8) == 0) + { + arg = skipwhite(arg + 8); + continue; + } + if (STRNCMP(arg, "<nowait>", 8) == 0) + { + arg = skipwhite(arg + 8); + continue; + } + if (STRNCMP(arg, "<silent>", 8) == 0) + { + arg = skipwhite(arg + 8); + continue; + } + if (STRNCMP(arg, "<special>", 9) == 0) + { + arg = skipwhite(arg + 9); + continue; + } +#ifdef FEAT_EVAL + if (STRNCMP(arg, "<script>", 8) == 0) + { + arg = skipwhite(arg + 8); + continue; + } + if (STRNCMP(arg, "<expr>", 6) == 0) + { + arg = skipwhite(arg + 6); + continue; + } +#endif + break; + } + xp->xp_pattern = arg; + } + + return NULL; +} + +/* + * Find all mapping/abbreviation names that match regexp 'prog'. + * For command line expansion of ":[un]map" and ":[un]abbrev" in all modes. + * Return OK if matches found, FAIL otherwise. + */ + int +ExpandMappings( + regmatch_T *regmatch, + int *num_file, + char_u ***file) +{ + mapblock_T *mp; + int hash; + int count; + int round; + char_u *p; + int i; + + validate_maphash(); + + *num_file = 0; /* return values in case of FAIL */ + *file = NULL; + + /* + * round == 1: Count the matches. + * round == 2: Build the array to keep the matches. + */ + for (round = 1; round <= 2; ++round) + { + count = 0; + + for (i = 0; i < 7; ++i) + { + if (i == 0) + p = (char_u *)"<silent>"; + else if (i == 1) + p = (char_u *)"<unique>"; +#ifdef FEAT_EVAL + else if (i == 2) + p = (char_u *)"<script>"; + else if (i == 3) + p = (char_u *)"<expr>"; +#endif +#ifdef FEAT_LOCALMAP + else if (i == 4 && !expand_buffer) + p = (char_u *)"<buffer>"; +#endif + else if (i == 5) + p = (char_u *)"<nowait>"; + else if (i == 6) + p = (char_u *)"<special>"; + else + continue; + + if (vim_regexec(regmatch, p, (colnr_T)0)) + { + if (round == 1) + ++count; + else + (*file)[count++] = vim_strsave(p); + } + } + + for (hash = 0; hash < 256; ++hash) + { + if (expand_isabbrev) + { + if (hash > 0) /* only one abbrev list */ + break; /* for (hash) */ + mp = first_abbr; + } +#ifdef FEAT_LOCALMAP + else if (expand_buffer) + mp = curbuf->b_maphash[hash]; +#endif + else + mp = maphash[hash]; + for (; mp; mp = mp->m_next) + { + if (mp->m_mode & expand_mapmodes) + { + p = translate_mapping(mp->m_keys, TRUE); + if (p != NULL && vim_regexec(regmatch, p, (colnr_T)0)) + { + if (round == 1) + ++count; + else + { + (*file)[count++] = p; + p = NULL; + } + } + vim_free(p); + } + } /* for (mp) */ + } /* for (hash) */ + + if (count == 0) /* no match found */ + break; /* for (round) */ + + if (round == 1) + { + *file = (char_u **)alloc((unsigned)(count * sizeof(char_u *))); + if (*file == NULL) + return FAIL; + } + } /* for (round) */ + + if (count > 1) + { + char_u **ptr1; + char_u **ptr2; + char_u **ptr3; + + /* Sort the matches */ + sort_strings(*file, count); + + /* Remove multiple entries */ + ptr1 = *file; + ptr2 = ptr1 + 1; + ptr3 = ptr1 + count; + + while (ptr2 < ptr3) + { + if (STRCMP(*ptr1, *ptr2)) + *++ptr1 = *ptr2++; + else + { + vim_free(*ptr2++); + count--; + } + } + } + + *num_file = count; + return (count == 0 ? FAIL : OK); +} +#endif /* FEAT_CMDL_COMPL */ + +/* + * Check for an abbreviation. + * Cursor is at ptr[col]. + * When inserting, mincol is where insert started. + * For the command line, mincol is what is to be skipped over. + * "c" is the character typed before check_abbr was called. It may have + * ABBR_OFF added to avoid prepending a CTRL-V to it. + * + * Historic vi practice: The last character of an abbreviation must be an id + * character ([a-zA-Z0-9_]). The characters in front of it must be all id + * characters or all non-id characters. This allows for abbr. "#i" to + * "#include". + * + * Vim addition: Allow for abbreviations that end in a non-keyword character. + * Then there must be white space before the abbr. + * + * return TRUE if there is an abbreviation, FALSE if not + */ + int +check_abbr( + int c, + char_u *ptr, + int col, + int mincol) +{ + int len; + int scol; /* starting column of the abbr. */ + int j; + char_u *s; + char_u tb[MB_MAXBYTES + 4]; + mapblock_T *mp; +#ifdef FEAT_LOCALMAP + mapblock_T *mp2; +#endif + int clen = 0; /* length in characters */ + int is_id = TRUE; + int vim_abbr; + + if (typebuf.tb_no_abbr_cnt) /* abbrev. are not recursive */ + return FALSE; + + /* no remapping implies no abbreviation, except for CTRL-] */ + if ((KeyNoremap & (RM_NONE|RM_SCRIPT)) != 0 && c != Ctrl_RSB) + return FALSE; + + /* + * Check for word before the cursor: If it ends in a keyword char all + * chars before it must be keyword chars or non-keyword chars, but not + * white space. If it ends in a non-keyword char we accept any characters + * before it except white space. + */ + if (col == 0) /* cannot be an abbr. */ + return FALSE; + + if (has_mbyte) + { + char_u *p; + + p = mb_prevptr(ptr, ptr + col); + if (!vim_iswordp(p)) + vim_abbr = TRUE; /* Vim added abbr. */ + else + { + vim_abbr = FALSE; /* vi compatible abbr. */ + if (p > ptr) + is_id = vim_iswordp(mb_prevptr(ptr, p)); + } + clen = 1; + while (p > ptr + mincol) + { + p = mb_prevptr(ptr, p); + if (vim_isspace(*p) || (!vim_abbr && is_id != vim_iswordp(p))) + { + p += (*mb_ptr2len)(p); + break; + } + ++clen; + } + scol = (int)(p - ptr); + } + else + { + if (!vim_iswordc(ptr[col - 1])) + vim_abbr = TRUE; /* Vim added abbr. */ + else + { + vim_abbr = FALSE; /* vi compatible abbr. */ + if (col > 1) + is_id = vim_iswordc(ptr[col - 2]); + } + for (scol = col - 1; scol > 0 && !vim_isspace(ptr[scol - 1]) + && (vim_abbr || is_id == vim_iswordc(ptr[scol - 1])); --scol) + ; + } + + if (scol < mincol) + scol = mincol; + if (scol < col) /* there is a word in front of the cursor */ + { + ptr += scol; + len = col - scol; +#ifdef FEAT_LOCALMAP + mp = curbuf->b_first_abbr; + mp2 = first_abbr; + if (mp == NULL) + { + mp = mp2; + mp2 = NULL; + } +#else + mp = first_abbr; +#endif + for ( ; mp; +#ifdef FEAT_LOCALMAP + mp->m_next == NULL ? (mp = mp2, mp2 = NULL) : +#endif + (mp = mp->m_next)) + { + int qlen = mp->m_keylen; + char_u *q = mp->m_keys; + int match; + + if (vim_strbyte(mp->m_keys, K_SPECIAL) != NULL) + { + char_u *qe = vim_strsave(mp->m_keys); + + /* might have CSI escaped mp->m_keys */ + if (qe != NULL) + { + q = qe; + vim_unescape_csi(q); + qlen = (int)STRLEN(q); + } + } + + /* find entries with right mode and keys */ + match = (mp->m_mode & State) + && qlen == len + && !STRNCMP(q, ptr, (size_t)len); + if (q != mp->m_keys) + vim_free(q); + if (match) + break; + } + if (mp != NULL) + { + /* + * Found a match: + * Insert the rest of the abbreviation in typebuf.tb_buf[]. + * This goes from end to start. + * + * Characters 0x000 - 0x100: normal chars, may need CTRL-V, + * except K_SPECIAL: Becomes K_SPECIAL KS_SPECIAL KE_FILLER + * Characters where IS_SPECIAL() == TRUE: key codes, need + * K_SPECIAL. Other characters (with ABBR_OFF): don't use CTRL-V. + * + * Character CTRL-] is treated specially - it completes the + * abbreviation, but is not inserted into the input stream. + */ + j = 0; + if (c != Ctrl_RSB) + { + /* special key code, split up */ + if (IS_SPECIAL(c) || c == K_SPECIAL) + { + tb[j++] = K_SPECIAL; + tb[j++] = K_SECOND(c); + tb[j++] = K_THIRD(c); + } + else + { + if (c < ABBR_OFF && (c < ' ' || c > '~')) + tb[j++] = Ctrl_V; /* special char needs CTRL-V */ + if (has_mbyte) + { + /* if ABBR_OFF has been added, remove it here */ + if (c >= ABBR_OFF) + c -= ABBR_OFF; + j += (*mb_char2bytes)(c, tb + j); + } + else + tb[j++] = c; + } + tb[j] = NUL; + /* insert the last typed char */ + (void)ins_typebuf(tb, 1, 0, TRUE, mp->m_silent); + } +#ifdef FEAT_EVAL + if (mp->m_expr) + s = eval_map_expr(mp->m_str, c); + else +#endif + s = mp->m_str; + if (s != NULL) + { + /* insert the to string */ + (void)ins_typebuf(s, mp->m_noremap, 0, TRUE, mp->m_silent); + /* no abbrev. for these chars */ + typebuf.tb_no_abbr_cnt += (int)STRLEN(s) + j + 1; +#ifdef FEAT_EVAL + if (mp->m_expr) + vim_free(s); +#endif + } + + tb[0] = Ctrl_H; + tb[1] = NUL; + if (has_mbyte) + len = clen; /* Delete characters instead of bytes */ + while (len-- > 0) /* delete the from string */ + (void)ins_typebuf(tb, 1, 0, TRUE, mp->m_silent); + return TRUE; + } + } + return FALSE; +} + +#ifdef FEAT_EVAL +/* + * Evaluate the RHS of a mapping or abbreviations and take care of escaping + * special characters. + */ + static char_u * +eval_map_expr( + char_u *str, + int c) /* NUL or typed character for abbreviation */ +{ + char_u *res; + char_u *p; + char_u *expr; + pos_T save_cursor; + int save_msg_col; + int save_msg_row; + + /* Remove escaping of CSI, because "str" is in a format to be used as + * typeahead. */ + expr = vim_strsave(str); + if (expr == NULL) + return NULL; + vim_unescape_csi(expr); + + /* Forbid changing text or using ":normal" to avoid most of the bad side + * effects. Also restore the cursor position. */ + ++textlock; + ++ex_normal_lock; + set_vim_var_char(c); /* set v:char to the typed character */ + save_cursor = curwin->w_cursor; + save_msg_col = msg_col; + save_msg_row = msg_row; + p = eval_to_string(expr, NULL, FALSE); + --textlock; + --ex_normal_lock; + curwin->w_cursor = save_cursor; + msg_col = save_msg_col; + msg_row = save_msg_row; + + vim_free(expr); + + if (p == NULL) + return NULL; + /* Escape CSI in the result to be able to use the string as typeahead. */ + res = vim_strsave_escape_csi(p); + vim_free(p); + + return res; +} +#endif + +/* + * Copy "p" to allocated memory, escaping K_SPECIAL and CSI so that the result + * can be put in the typeahead buffer. + * Returns NULL when out of memory. + */ + char_u * +vim_strsave_escape_csi( + char_u *p) +{ + char_u *res; + char_u *s, *d; + + /* Need a buffer to hold up to three times as much. Four in case of an + * illegal utf-8 byte: + * 0xc0 -> 0xc3 0x80 -> 0xc3 K_SPECIAL KS_SPECIAL KE_FILLER */ + res = alloc((unsigned)(STRLEN(p) * 4) + 1); + if (res != NULL) + { + d = res; + for (s = p; *s != NUL; ) + { + if (s[0] == K_SPECIAL && s[1] != NUL && s[2] != NUL) + { + /* Copy special key unmodified. */ + *d++ = *s++; + *d++ = *s++; + *d++ = *s++; + } + else + { + /* Add character, possibly multi-byte to destination, escaping + * CSI and K_SPECIAL. Be careful, it can be an illegal byte! */ + d = add_char2buf(PTR2CHAR(s), d); + s += MB_CPTR2LEN(s); + } + } + *d = NUL; + } + return res; +} + +/* + * Remove escaping from CSI and K_SPECIAL characters. Reverse of + * vim_strsave_escape_csi(). Works in-place. + */ + void +vim_unescape_csi(char_u *p) +{ + char_u *s = p, *d = p; + + while (*s != NUL) + { + if (s[0] == K_SPECIAL && s[1] == KS_SPECIAL && s[2] == KE_FILLER) + { + *d++ = K_SPECIAL; + s += 3; + } + else if ((s[0] == K_SPECIAL || s[0] == CSI) + && s[1] == KS_EXTRA && s[2] == (int)KE_CSI) + { + *d++ = CSI; + s += 3; + } + else + *d++ = *s++; + } + *d = NUL; +} + +/* + * Write map commands for the current mappings to an .exrc file. + * Return FAIL on error, OK otherwise. + */ + int +makemap( + FILE *fd, + buf_T *buf) /* buffer for local mappings or NULL */ +{ + mapblock_T *mp; + char_u c1, c2, c3; + char_u *p; + char *cmd; + int abbr; + int hash; + int did_cpo = FALSE; + int i; + + validate_maphash(); + + /* + * Do the loop twice: Once for mappings, once for abbreviations. + * Then loop over all map hash lists. + */ + for (abbr = 0; abbr < 2; ++abbr) + for (hash = 0; hash < 256; ++hash) + { + if (abbr) + { + if (hash > 0) /* there is only one abbr list */ + break; +#ifdef FEAT_LOCALMAP + if (buf != NULL) + mp = buf->b_first_abbr; + else +#endif + mp = first_abbr; + } + else + { +#ifdef FEAT_LOCALMAP + if (buf != NULL) + mp = buf->b_maphash[hash]; + else +#endif + mp = maphash[hash]; + } + + for ( ; mp; mp = mp->m_next) + { + /* skip script-local mappings */ + if (mp->m_noremap == REMAP_SCRIPT) + continue; + + /* skip mappings that contain a <SNR> (script-local thing), + * they probably don't work when loaded again */ + for (p = mp->m_str; *p != NUL; ++p) + if (p[0] == K_SPECIAL && p[1] == KS_EXTRA + && p[2] == (int)KE_SNR) + break; + if (*p != NUL) + continue; + + /* It's possible to create a mapping and then ":unmap" certain + * modes. We recreate this here by mapping the individual + * modes, which requires up to three of them. */ + c1 = NUL; + c2 = NUL; + c3 = NUL; + if (abbr) + cmd = "abbr"; + else + cmd = "map"; + switch (mp->m_mode) + { + case NORMAL + VISUAL + SELECTMODE + OP_PENDING: + break; + case NORMAL: + c1 = 'n'; + break; + case VISUAL: + c1 = 'x'; + break; + case SELECTMODE: + c1 = 's'; + break; + case OP_PENDING: + c1 = 'o'; + break; + case NORMAL + VISUAL: + c1 = 'n'; + c2 = 'x'; + break; + case NORMAL + SELECTMODE: + c1 = 'n'; + c2 = 's'; + break; + case NORMAL + OP_PENDING: + c1 = 'n'; + c2 = 'o'; + break; + case VISUAL + SELECTMODE: + c1 = 'v'; + break; + case VISUAL + OP_PENDING: + c1 = 'x'; + c2 = 'o'; + break; + case SELECTMODE + OP_PENDING: + c1 = 's'; + c2 = 'o'; + break; + case NORMAL + VISUAL + SELECTMODE: + c1 = 'n'; + c2 = 'v'; + break; + case NORMAL + VISUAL + OP_PENDING: + c1 = 'n'; + c2 = 'x'; + c3 = 'o'; + break; + case NORMAL + SELECTMODE + OP_PENDING: + c1 = 'n'; + c2 = 's'; + c3 = 'o'; + break; + case VISUAL + SELECTMODE + OP_PENDING: + c1 = 'v'; + c2 = 'o'; + break; + case CMDLINE + INSERT: + if (!abbr) + cmd = "map!"; + break; + case CMDLINE: + c1 = 'c'; + break; + case INSERT: + c1 = 'i'; + break; + case LANGMAP: + c1 = 'l'; + break; + case TERMINAL: + c1 = 't'; + break; + default: + iemsg(_("E228: makemap: Illegal mode")); + return FAIL; + } + do /* do this twice if c2 is set, 3 times with c3 */ + { + /* When outputting <> form, need to make sure that 'cpo' + * is set to the Vim default. */ + if (!did_cpo) + { + if (*mp->m_str == NUL) /* will use <Nop> */ + did_cpo = TRUE; + else + for (i = 0; i < 2; ++i) + for (p = (i ? mp->m_str : mp->m_keys); *p; ++p) + if (*p == K_SPECIAL || *p == NL) + did_cpo = TRUE; + if (did_cpo) + { + if (fprintf(fd, "let s:cpo_save=&cpo") < 0 + || put_eol(fd) < 0 + || fprintf(fd, "set cpo&vim") < 0 + || put_eol(fd) < 0) + return FAIL; + } + } + if (c1 && putc(c1, fd) < 0) + return FAIL; + if (mp->m_noremap != REMAP_YES && fprintf(fd, "nore") < 0) + return FAIL; + if (fputs(cmd, fd) < 0) + return FAIL; + if (buf != NULL && fputs(" <buffer>", fd) < 0) + return FAIL; + if (mp->m_nowait && fputs(" <nowait>", fd) < 0) + return FAIL; + if (mp->m_silent && fputs(" <silent>", fd) < 0) + return FAIL; +#ifdef FEAT_EVAL + if (mp->m_noremap == REMAP_SCRIPT + && fputs("<script>", fd) < 0) + return FAIL; + if (mp->m_expr && fputs(" <expr>", fd) < 0) + return FAIL; +#endif + + if ( putc(' ', fd) < 0 + || put_escstr(fd, mp->m_keys, 0) == FAIL + || putc(' ', fd) < 0 + || put_escstr(fd, mp->m_str, 1) == FAIL + || put_eol(fd) < 0) + return FAIL; + c1 = c2; + c2 = c3; + c3 = NUL; + } while (c1 != NUL); + } + } + + if (did_cpo) + if (fprintf(fd, "let &cpo=s:cpo_save") < 0 + || put_eol(fd) < 0 + || fprintf(fd, "unlet s:cpo_save") < 0 + || put_eol(fd) < 0) + return FAIL; + return OK; +} + +/* + * write escape string to file + * "what": 0 for :map lhs, 1 for :map rhs, 2 for :set + * + * return FAIL for failure, OK otherwise + */ + int +put_escstr(FILE *fd, char_u *strstart, int what) +{ + char_u *str = strstart; + int c; + int modifiers; + + /* :map xx <Nop> */ + if (*str == NUL && what == 1) + { + if (fprintf(fd, "<Nop>") < 0) + return FAIL; + return OK; + } + + for ( ; *str != NUL; ++str) + { + char_u *p; + + /* Check for a multi-byte character, which may contain escaped + * K_SPECIAL and CSI bytes */ + p = mb_unescape(&str); + if (p != NULL) + { + while (*p != NUL) + if (fputc(*p++, fd) < 0) + return FAIL; + --str; + continue; + } + + c = *str; + /* + * Special key codes have to be translated to be able to make sense + * when they are read back. + */ + if (c == K_SPECIAL && what != 2) + { + modifiers = 0x0; + if (str[1] == KS_MODIFIER) + { + modifiers = str[2]; + str += 3; + c = *str; + } + if (c == K_SPECIAL) + { + c = TO_SPECIAL(str[1], str[2]); + str += 2; + } + if (IS_SPECIAL(c) || modifiers) /* special key */ + { + if (fputs((char *)get_special_key_name(c, modifiers), fd) < 0) + return FAIL; + continue; + } + } + + /* + * A '\n' in a map command should be written as <NL>. + * A '\n' in a set command should be written as \^V^J. + */ + if (c == NL) + { + if (what == 2) + { + if (fprintf(fd, IF_EB("\\\026\n", "\\" CTRL_V_STR "\n")) < 0) + return FAIL; + } + else + { + if (fprintf(fd, "<NL>") < 0) + return FAIL; + } + continue; + } + + /* + * Some characters have to be escaped with CTRL-V to + * prevent them from misinterpreted in DoOneCmd(). + * A space, Tab and '"' has to be escaped with a backslash to + * prevent it to be misinterpreted in do_set(). + * A space has to be escaped with a CTRL-V when it's at the start of a + * ":map" rhs. + * A '<' has to be escaped with a CTRL-V to prevent it being + * interpreted as the start of a special key name. + * A space in the lhs of a :map needs a CTRL-V. + */ + if (what == 2 && (VIM_ISWHITE(c) || c == '"' || c == '\\')) + { + if (putc('\\', fd) < 0) + return FAIL; + } + else if (c < ' ' || c > '~' || c == '|' + || (what == 0 && c == ' ') + || (what == 1 && str == strstart && c == ' ') + || (what != 2 && c == '<')) + { + if (putc(Ctrl_V, fd) < 0) + return FAIL; + } + if (putc(c, fd) < 0) + return FAIL; + } + return OK; +} + +/* + * Check all mappings for the presence of special key codes. + * Used after ":set term=xxx". + */ + void +check_map_keycodes(void) +{ + mapblock_T *mp; + char_u *p; + int i; + char_u buf[3]; + char_u *save_name; + int abbr; + int hash; +#ifdef FEAT_LOCALMAP + buf_T *bp; +#endif + + validate_maphash(); + save_name = sourcing_name; + sourcing_name = (char_u *)"mappings"; /* avoids giving error messages */ + +#ifdef FEAT_LOCALMAP + /* This this once for each buffer, and then once for global + * mappings/abbreviations with bp == NULL */ + for (bp = firstbuf; ; bp = bp->b_next) + { +#endif + /* + * Do the loop twice: Once for mappings, once for abbreviations. + * Then loop over all map hash lists. + */ + for (abbr = 0; abbr <= 1; ++abbr) + for (hash = 0; hash < 256; ++hash) + { + if (abbr) + { + if (hash) /* there is only one abbr list */ + break; +#ifdef FEAT_LOCALMAP + if (bp != NULL) + mp = bp->b_first_abbr; + else +#endif + mp = first_abbr; + } + else + { +#ifdef FEAT_LOCALMAP + if (bp != NULL) + mp = bp->b_maphash[hash]; + else +#endif + mp = maphash[hash]; + } + for ( ; mp != NULL; mp = mp->m_next) + { + for (i = 0; i <= 1; ++i) /* do this twice */ + { + if (i == 0) + p = mp->m_keys; /* once for the "from" part */ + else + p = mp->m_str; /* and once for the "to" part */ + while (*p) + { + if (*p == K_SPECIAL) + { + ++p; + if (*p < 128) /* for "normal" tcap entries */ + { + buf[0] = p[0]; + buf[1] = p[1]; + buf[2] = NUL; + (void)add_termcap_entry(buf, FALSE); + } + ++p; + } + ++p; + } + } + } + } +#ifdef FEAT_LOCALMAP + if (bp == NULL) + break; + } +#endif + sourcing_name = save_name; +} + +#if defined(FEAT_EVAL) || defined(PROTO) +/* + * Check the string "keys" against the lhs of all mappings. + * Return pointer to rhs of mapping (mapblock->m_str). + * NULL when no mapping found. + */ + char_u * +check_map( + char_u *keys, + int mode, + int exact, /* require exact match */ + int ign_mod, /* ignore preceding modifier */ + int abbr, /* do abbreviations */ + mapblock_T **mp_ptr, /* return: pointer to mapblock or NULL */ + int *local_ptr) /* return: buffer-local mapping or NULL */ +{ + int hash; + int len, minlen; + mapblock_T *mp; + char_u *s; +#ifdef FEAT_LOCALMAP + int local; +#endif + + validate_maphash(); + + len = (int)STRLEN(keys); +#ifdef FEAT_LOCALMAP + for (local = 1; local >= 0; --local) +#endif + /* loop over all hash lists */ + for (hash = 0; hash < 256; ++hash) + { + if (abbr) + { + if (hash > 0) /* there is only one list. */ + break; +#ifdef FEAT_LOCALMAP + if (local) + mp = curbuf->b_first_abbr; + else +#endif + mp = first_abbr; + } +#ifdef FEAT_LOCALMAP + else if (local) + mp = curbuf->b_maphash[hash]; +#endif + else + mp = maphash[hash]; + for ( ; mp != NULL; mp = mp->m_next) + { + /* skip entries with wrong mode, wrong length and not matching + * ones */ + if ((mp->m_mode & mode) && (!exact || mp->m_keylen == len)) + { + if (len > mp->m_keylen) + minlen = mp->m_keylen; + else + minlen = len; + s = mp->m_keys; + if (ign_mod && s[0] == K_SPECIAL && s[1] == KS_MODIFIER + && s[2] != NUL) + { + s += 3; + if (len > mp->m_keylen - 3) + minlen = mp->m_keylen - 3; + } + if (STRNCMP(s, keys, minlen) == 0) + { + if (mp_ptr != NULL) + *mp_ptr = mp; + if (local_ptr != NULL) +#ifdef FEAT_LOCALMAP + *local_ptr = local; +#else + *local_ptr = 0; +#endif + return mp->m_str; + } + } + } + } + + return NULL; +} +#endif + +#if defined(MSWIN) || defined(MACOS_X) + +#define VIS_SEL (VISUAL+SELECTMODE) /* abbreviation */ + +/* + * Default mappings for some often used keys. + */ +static struct initmap +{ + char_u *arg; + int mode; +} initmappings[] = +{ +#if defined(MSWIN) + /* Use the Windows (CUA) keybindings. */ +# ifdef FEAT_GUI + /* paste, copy and cut */ + {(char_u *)"<S-Insert> \"*P", NORMAL}, + {(char_u *)"<S-Insert> \"-d\"*P", VIS_SEL}, + {(char_u *)"<S-Insert> <C-R><C-O>*", INSERT+CMDLINE}, + {(char_u *)"<C-Insert> \"*y", VIS_SEL}, + {(char_u *)"<S-Del> \"*d", VIS_SEL}, + {(char_u *)"<C-Del> \"*d", VIS_SEL}, + {(char_u *)"<C-X> \"*d", VIS_SEL}, + /* Missing: CTRL-C (cancel) and CTRL-V (block selection) */ +# else + {(char_u *)"\316w <C-Home>", NORMAL+VIS_SEL}, + {(char_u *)"\316w <C-Home>", INSERT+CMDLINE}, + {(char_u *)"\316u <C-End>", NORMAL+VIS_SEL}, + {(char_u *)"\316u <C-End>", INSERT+CMDLINE}, + + /* paste, copy and cut */ +# ifdef FEAT_CLIPBOARD + {(char_u *)"\316\324 \"*P", NORMAL}, /* SHIFT-Insert is "*P */ + {(char_u *)"\316\324 \"-d\"*P", VIS_SEL}, /* SHIFT-Insert is "-d"*P */ + {(char_u *)"\316\324 \022\017*", INSERT}, /* SHIFT-Insert is ^R^O* */ + {(char_u *)"\316\325 \"*y", VIS_SEL}, /* CTRL-Insert is "*y */ + {(char_u *)"\316\327 \"*d", VIS_SEL}, /* SHIFT-Del is "*d */ + {(char_u *)"\316\330 \"*d", VIS_SEL}, /* CTRL-Del is "*d */ + {(char_u *)"\030 \"-d", VIS_SEL}, /* CTRL-X is "-d */ +# else + {(char_u *)"\316\324 P", NORMAL}, /* SHIFT-Insert is P */ + {(char_u *)"\316\324 \"-dP", VIS_SEL}, /* SHIFT-Insert is "-dP */ + {(char_u *)"\316\324 \022\017\"", INSERT}, /* SHIFT-Insert is ^R^O" */ + {(char_u *)"\316\325 y", VIS_SEL}, /* CTRL-Insert is y */ + {(char_u *)"\316\327 d", VIS_SEL}, /* SHIFT-Del is d */ + {(char_u *)"\316\330 d", VIS_SEL}, /* CTRL-Del is d */ +# endif +# endif +#endif + +#if defined(MACOS_X) + /* Use the Standard MacOS binding. */ + /* paste, copy and cut */ + {(char_u *)"<D-v> \"*P", NORMAL}, + {(char_u *)"<D-v> \"-d\"*P", VIS_SEL}, + {(char_u *)"<D-v> <C-R>*", INSERT+CMDLINE}, + {(char_u *)"<D-c> \"*y", VIS_SEL}, + {(char_u *)"<D-x> \"*d", VIS_SEL}, + {(char_u *)"<Backspace> \"-d", VIS_SEL}, +#endif +}; + +# undef VIS_SEL +#endif + +/* + * Set up default mappings. + */ + void +init_mappings(void) +{ +#if defined(MSWIN) || defined(MACOS_X) + int i; + + for (i = 0; i < (int)(sizeof(initmappings) / sizeof(struct initmap)); ++i) + add_map(initmappings[i].arg, initmappings[i].mode); +#endif +} + +#if defined(MSWIN) || defined(FEAT_CMDWIN) || defined(MACOS_X) \ + || defined(PROTO) +/* + * Add a mapping "map" for mode "mode". + * Need to put string in allocated memory, because do_map() will modify it. + */ + void +add_map(char_u *map, int mode) +{ + char_u *s; + char_u *cpo_save = p_cpo; + + p_cpo = (char_u *)""; /* Allow <> notation */ + s = vim_strsave(map); + if (s != NULL) + { + (void)do_map(0, s, mode, FALSE); + vim_free(s); + } + p_cpo = cpo_save; +} +#endif |