diff options
Diffstat (limited to 'src/ex_cmds.c')
| -rw-r--r-- | src/ex_cmds.c | 7754 |
1 files changed, 7754 insertions, 0 deletions
diff --git a/src/ex_cmds.c b/src/ex_cmds.c new file mode 100644 index 0000000..a3974c1 --- /dev/null +++ b/src/ex_cmds.c @@ -0,0 +1,7754 @@ +/* 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. + */ + +/* + * ex_cmds.c: some functions for command line commands + */ + +#include "vim.h" +#include "version.h" + +#ifdef FEAT_FLOAT +# include <float.h> +#endif + +static int linelen(int *has_tab); +static void do_filter(linenr_T line1, linenr_T line2, exarg_T *eap, char_u *cmd, int do_in, int do_out); +#ifdef FEAT_VIMINFO +static char_u *viminfo_filename(char_u *); +static void do_viminfo(FILE *fp_in, FILE *fp_out, int flags); +static int viminfo_encoding(vir_T *virp); +static int read_viminfo_up_to_marks(vir_T *virp, int forceit, int writing); +#endif + +static int check_readonly(int *forceit, buf_T *buf); +static void delbuf_msg(char_u *name); +static int +#ifdef __BORLANDC__ + _RTLENTRYF +#endif + help_compare(const void *s1, const void *s2); +static void prepare_help_buffer(void); + +/* + * ":ascii" and "ga". + */ + void +do_ascii(exarg_T *eap UNUSED) +{ + int c; + int cval; + char buf1[20]; + char buf2[20]; + char_u buf3[7]; +#ifdef FEAT_DIGRAPHS + char_u *dig; +#endif + int cc[MAX_MCO]; + int ci = 0; + int len; + + if (enc_utf8) + c = utfc_ptr2char(ml_get_cursor(), cc); + else + c = gchar_cursor(); + if (c == NUL) + { + msg("NUL"); + return; + } + + IObuff[0] = NUL; + if (!has_mbyte || (enc_dbcs != 0 && c < 0x100) || c < 0x80) + { + if (c == NL) /* NUL is stored as NL */ + c = NUL; + if (c == CAR && get_fileformat(curbuf) == EOL_MAC) + cval = NL; /* NL is stored as CR */ + else + cval = c; + if (vim_isprintc_strict(c) && (c < ' ' +#ifndef EBCDIC + || c > '~' +#endif + )) + { + transchar_nonprint(buf3, c); + vim_snprintf(buf1, sizeof(buf1), " <%s>", (char *)buf3); + } + else + buf1[0] = NUL; +#ifndef EBCDIC + if (c >= 0x80) + vim_snprintf(buf2, sizeof(buf2), " <M-%s>", + (char *)transchar(c & 0x7f)); + else +#endif + buf2[0] = NUL; +#ifdef FEAT_DIGRAPHS + dig = get_digraph_for_char(cval); + if (dig != NULL) + vim_snprintf((char *)IObuff, IOSIZE, + _("<%s>%s%s %d, Hex %02x, Oct %03o, Digr %s"), + transchar(c), buf1, buf2, cval, cval, cval, dig); + else +#endif + vim_snprintf((char *)IObuff, IOSIZE, + _("<%s>%s%s %d, Hex %02x, Octal %03o"), + transchar(c), buf1, buf2, cval, cval, cval); + if (enc_utf8) + c = cc[ci++]; + else + c = 0; + } + + /* Repeat for combining characters. */ + while (has_mbyte && (c >= 0x100 || (enc_utf8 && c >= 0x80))) + { + len = (int)STRLEN(IObuff); + /* This assumes every multi-byte char is printable... */ + if (len > 0) + IObuff[len++] = ' '; + IObuff[len++] = '<'; + if (enc_utf8 && utf_iscomposing(c) +# ifdef USE_GUI + && !gui.in_use +# endif + ) + IObuff[len++] = ' '; /* draw composing char on top of a space */ + len += (*mb_char2bytes)(c, IObuff + len); +#ifdef FEAT_DIGRAPHS + dig = get_digraph_for_char(c); + if (dig != NULL) + vim_snprintf((char *)IObuff + len, IOSIZE - len, + c < 0x10000 ? _("> %d, Hex %04x, Oct %o, Digr %s") + : _("> %d, Hex %08x, Oct %o, Digr %s"), + c, c, c, dig); + else +#endif + vim_snprintf((char *)IObuff + len, IOSIZE - len, + c < 0x10000 ? _("> %d, Hex %04x, Octal %o") + : _("> %d, Hex %08x, Octal %o"), + c, c, c); + if (ci == MAX_MCO) + break; + if (enc_utf8) + c = cc[ci++]; + else + c = 0; + } + + msg((char *)IObuff); +} + +/* + * ":left", ":center" and ":right": align text. + */ + void +ex_align(exarg_T *eap) +{ + pos_T save_curpos; + int len; + int indent = 0; + int new_indent; + int has_tab; + int width; + +#ifdef FEAT_RIGHTLEFT + if (curwin->w_p_rl) + { + /* switch left and right aligning */ + if (eap->cmdidx == CMD_right) + eap->cmdidx = CMD_left; + else if (eap->cmdidx == CMD_left) + eap->cmdidx = CMD_right; + } +#endif + + width = atoi((char *)eap->arg); + save_curpos = curwin->w_cursor; + if (eap->cmdidx == CMD_left) /* width is used for new indent */ + { + if (width >= 0) + indent = width; + } + else + { + /* + * if 'textwidth' set, use it + * else if 'wrapmargin' set, use it + * if invalid value, use 80 + */ + if (width <= 0) + width = curbuf->b_p_tw; + if (width == 0 && curbuf->b_p_wm > 0) + width = curwin->w_width - curbuf->b_p_wm; + if (width <= 0) + width = 80; + } + + if (u_save((linenr_T)(eap->line1 - 1), (linenr_T)(eap->line2 + 1)) == FAIL) + return; + + for (curwin->w_cursor.lnum = eap->line1; + curwin->w_cursor.lnum <= eap->line2; ++curwin->w_cursor.lnum) + { + if (eap->cmdidx == CMD_left) /* left align */ + new_indent = indent; + else + { + has_tab = FALSE; /* avoid uninit warnings */ + len = linelen(eap->cmdidx == CMD_right ? &has_tab + : NULL) - get_indent(); + + if (len <= 0) /* skip blank lines */ + continue; + + if (eap->cmdidx == CMD_center) + new_indent = (width - len) / 2; + else + { + new_indent = width - len; /* right align */ + + /* + * Make sure that embedded TABs don't make the text go too far + * to the right. + */ + if (has_tab) + while (new_indent > 0) + { + (void)set_indent(new_indent, 0); + if (linelen(NULL) <= width) + { + /* + * Now try to move the line as much as possible to + * the right. Stop when it moves too far. + */ + do + (void)set_indent(++new_indent, 0); + while (linelen(NULL) <= width); + --new_indent; + break; + } + --new_indent; + } + } + } + if (new_indent < 0) + new_indent = 0; + (void)set_indent(new_indent, 0); /* set indent */ + } + changed_lines(eap->line1, 0, eap->line2 + 1, 0L); + curwin->w_cursor = save_curpos; + beginline(BL_WHITE | BL_FIX); +} + +/* + * Get the length of the current line, excluding trailing white space. + */ + static int +linelen(int *has_tab) +{ + char_u *line; + char_u *first; + char_u *last; + int save; + int len; + + /* find the first non-blank character */ + line = ml_get_curline(); + first = skipwhite(line); + + /* find the character after the last non-blank character */ + for (last = first + STRLEN(first); + last > first && VIM_ISWHITE(last[-1]); --last) + ; + save = *last; + *last = NUL; + len = linetabsize(line); /* get line length */ + if (has_tab != NULL) /* check for embedded TAB */ + *has_tab = (vim_strchr(first, TAB) != NULL); + *last = save; + + return len; +} + +/* Buffer for two lines used during sorting. They are allocated to + * contain the longest line being sorted. */ +static char_u *sortbuf1; +static char_u *sortbuf2; + +static int sort_ic; /* ignore case */ +static int sort_nr; /* sort on number */ +static int sort_rx; /* sort on regex instead of skipping it */ +#ifdef FEAT_FLOAT +static int sort_flt; /* sort on floating number */ +#endif + +static int sort_abort; /* flag to indicate if sorting has been interrupted */ + +/* Struct to store info to be sorted. */ +typedef struct +{ + linenr_T lnum; /* line number */ + union { + struct + { + varnumber_T start_col_nr; /* starting column number */ + varnumber_T end_col_nr; /* ending column number */ + } line; + varnumber_T value; /* value if sorting by integer */ +#ifdef FEAT_FLOAT + float_T value_flt; /* value if sorting by float */ +#endif + } st_u; +} sorti_T; + +static int +#ifdef __BORLANDC__ +_RTLENTRYF +#endif +sort_compare(const void *s1, const void *s2); + + static int +#ifdef __BORLANDC__ +_RTLENTRYF +#endif +sort_compare(const void *s1, const void *s2) +{ + sorti_T l1 = *(sorti_T *)s1; + sorti_T l2 = *(sorti_T *)s2; + int result = 0; + + /* If the user interrupts, there's no way to stop qsort() immediately, but + * if we return 0 every time, qsort will assume it's done sorting and + * exit. */ + if (sort_abort) + return 0; + fast_breakcheck(); + if (got_int) + sort_abort = TRUE; + + /* When sorting numbers "start_col_nr" is the number, not the column + * number. */ + if (sort_nr) + result = l1.st_u.value == l2.st_u.value ? 0 + : l1.st_u.value > l2.st_u.value ? 1 : -1; +#ifdef FEAT_FLOAT + else if (sort_flt) + result = l1.st_u.value_flt == l2.st_u.value_flt ? 0 + : l1.st_u.value_flt > l2.st_u.value_flt ? 1 : -1; +#endif + else + { + /* We need to copy one line into "sortbuf1", because there is no + * guarantee that the first pointer becomes invalid when obtaining the + * second one. */ + STRNCPY(sortbuf1, ml_get(l1.lnum) + l1.st_u.line.start_col_nr, + l1.st_u.line.end_col_nr - l1.st_u.line.start_col_nr + 1); + sortbuf1[l1.st_u.line.end_col_nr - l1.st_u.line.start_col_nr] = 0; + STRNCPY(sortbuf2, ml_get(l2.lnum) + l2.st_u.line.start_col_nr, + l2.st_u.line.end_col_nr - l2.st_u.line.start_col_nr + 1); + sortbuf2[l2.st_u.line.end_col_nr - l2.st_u.line.start_col_nr] = 0; + + result = sort_ic ? STRICMP(sortbuf1, sortbuf2) + : STRCMP(sortbuf1, sortbuf2); + } + + /* If two lines have the same value, preserve the original line order. */ + if (result == 0) + return (int)(l1.lnum - l2.lnum); + return result; +} + +/* + * ":sort". + */ + void +ex_sort(exarg_T *eap) +{ + regmatch_T regmatch; + int len; + linenr_T lnum; + long maxlen = 0; + sorti_T *nrs; + size_t count = (size_t)(eap->line2 - eap->line1 + 1); + size_t i; + char_u *p; + char_u *s; + char_u *s2; + char_u c; /* temporary character storage */ + int unique = FALSE; + long deleted; + colnr_T start_col; + colnr_T end_col; + int sort_what = 0; + int format_found = 0; + int change_occurred = FALSE; // Buffer contents changed. + + /* Sorting one line is really quick! */ + if (count <= 1) + return; + + if (u_save((linenr_T)(eap->line1 - 1), (linenr_T)(eap->line2 + 1)) == FAIL) + return; + sortbuf1 = NULL; + sortbuf2 = NULL; + regmatch.regprog = NULL; + nrs = (sorti_T *)lalloc((long_u)(count * sizeof(sorti_T)), TRUE); + if (nrs == NULL) + goto sortend; + + sort_abort = sort_ic = sort_rx = sort_nr = 0; +#ifdef FEAT_FLOAT + sort_flt = 0; +#endif + + for (p = eap->arg; *p != NUL; ++p) + { + if (VIM_ISWHITE(*p)) + ; + else if (*p == 'i') + sort_ic = TRUE; + else if (*p == 'r') + sort_rx = TRUE; + else if (*p == 'n') + { + sort_nr = 1; + ++format_found; + } +#ifdef FEAT_FLOAT + else if (*p == 'f') + { + sort_flt = 1; + ++format_found; + } +#endif + else if (*p == 'b') + { + sort_what = STR2NR_BIN + STR2NR_FORCE; + ++format_found; + } + else if (*p == 'o') + { + sort_what = STR2NR_OCT + STR2NR_FORCE; + ++format_found; + } + else if (*p == 'x') + { + sort_what = STR2NR_HEX + STR2NR_FORCE; + ++format_found; + } + else if (*p == 'u') + unique = TRUE; + else if (*p == '"') /* comment start */ + break; + else if (check_nextcmd(p) != NULL) + { + eap->nextcmd = check_nextcmd(p); + break; + } + else if (!ASCII_ISALPHA(*p) && regmatch.regprog == NULL) + { + s = skip_regexp(p + 1, *p, TRUE, NULL); + if (*s != *p) + { + emsg(_(e_invalpat)); + goto sortend; + } + *s = NUL; + /* Use last search pattern if sort pattern is empty. */ + if (s == p + 1) + { + if (last_search_pat() == NULL) + { + emsg(_(e_noprevre)); + goto sortend; + } + regmatch.regprog = vim_regcomp(last_search_pat(), RE_MAGIC); + } + else + regmatch.regprog = vim_regcomp(p + 1, RE_MAGIC); + if (regmatch.regprog == NULL) + goto sortend; + p = s; /* continue after the regexp */ + regmatch.rm_ic = p_ic; + } + else + { + semsg(_(e_invarg2), p); + goto sortend; + } + } + + /* Can only have one of 'n', 'b', 'o' and 'x'. */ + if (format_found > 1) + { + emsg(_(e_invarg)); + goto sortend; + } + + /* From here on "sort_nr" is used as a flag for any integer number + * sorting. */ + sort_nr += sort_what; + + /* + * Make an array with all line numbers. This avoids having to copy all + * the lines into allocated memory. + * When sorting on strings "start_col_nr" is the offset in the line, for + * numbers sorting it's the number to sort on. This means the pattern + * matching and number conversion only has to be done once per line. + * Also get the longest line length for allocating "sortbuf". + */ + for (lnum = eap->line1; lnum <= eap->line2; ++lnum) + { + s = ml_get(lnum); + len = (int)STRLEN(s); + if (maxlen < len) + maxlen = len; + + start_col = 0; + end_col = len; + if (regmatch.regprog != NULL && vim_regexec(®match, s, 0)) + { + if (sort_rx) + { + start_col = (colnr_T)(regmatch.startp[0] - s); + end_col = (colnr_T)(regmatch.endp[0] - s); + } + else + start_col = (colnr_T)(regmatch.endp[0] - s); + } + else + if (regmatch.regprog != NULL) + end_col = 0; + + if (sort_nr +#ifdef FEAT_FLOAT + || sort_flt +#endif + ) + { + /* Make sure vim_str2nr doesn't read any digits past the end + * of the match, by temporarily terminating the string there */ + s2 = s + end_col; + c = *s2; + *s2 = NUL; + /* Sorting on number: Store the number itself. */ + p = s + start_col; + if (sort_nr) + { + if (sort_what & STR2NR_HEX) + s = skiptohex(p); + else if (sort_what & STR2NR_BIN) + s = skiptobin(p); + else + s = skiptodigit(p); + if (s > p && s[-1] == '-') + --s; /* include preceding negative sign */ + if (*s == NUL) + /* empty line should sort before any number */ + nrs[lnum - eap->line1].st_u.value = -MAXLNUM; + else + vim_str2nr(s, NULL, NULL, sort_what, + &nrs[lnum - eap->line1].st_u.value, NULL, 0); + } +#ifdef FEAT_FLOAT + else + { + s = skipwhite(p); + if (*s == '+') + s = skipwhite(s + 1); + + if (*s == NUL) + /* empty line should sort before any number */ + nrs[lnum - eap->line1].st_u.value_flt = -DBL_MAX; + else + nrs[lnum - eap->line1].st_u.value_flt = + strtod((char *)s, NULL); + } +#endif + *s2 = c; + } + else + { + /* Store the column to sort at. */ + nrs[lnum - eap->line1].st_u.line.start_col_nr = start_col; + nrs[lnum - eap->line1].st_u.line.end_col_nr = end_col; + } + + nrs[lnum - eap->line1].lnum = lnum; + + if (regmatch.regprog != NULL) + fast_breakcheck(); + if (got_int) + goto sortend; + } + + /* Allocate a buffer that can hold the longest line. */ + sortbuf1 = alloc((unsigned)maxlen + 1); + if (sortbuf1 == NULL) + goto sortend; + sortbuf2 = alloc((unsigned)maxlen + 1); + if (sortbuf2 == NULL) + goto sortend; + + /* Sort the array of line numbers. Note: can't be interrupted! */ + qsort((void *)nrs, count, sizeof(sorti_T), sort_compare); + + if (sort_abort) + goto sortend; + + /* Insert the lines in the sorted order below the last one. */ + lnum = eap->line2; + for (i = 0; i < count; ++i) + { + linenr_T get_lnum = nrs[eap->forceit ? count - i - 1 : i].lnum; + + // If the original line number of the line being placed is not the same + // as "lnum" (accounting for offset), we know that the buffer changed. + if (get_lnum + ((linenr_T)count - 1) != lnum) + change_occurred = TRUE; + + s = ml_get(get_lnum); + if (!unique || i == 0 + || (sort_ic ? STRICMP(s, sortbuf1) : STRCMP(s, sortbuf1)) != 0) + { + // Copy the line into a buffer, it may become invalid in + // ml_append(). And it's needed for "unique". + STRCPY(sortbuf1, s); + if (ml_append(lnum++, sortbuf1, (colnr_T)0, FALSE) == FAIL) + break; + } + fast_breakcheck(); + if (got_int) + goto sortend; + } + + /* delete the original lines if appending worked */ + if (i == count) + for (i = 0; i < count; ++i) + ml_delete(eap->line1, FALSE); + else + count = 0; + + /* Adjust marks for deleted (or added) lines and prepare for displaying. */ + deleted = (long)(count - (lnum - eap->line2)); + if (deleted > 0) + { + mark_adjust(eap->line2 - deleted, eap->line2, (long)MAXLNUM, -deleted); + msgmore(-deleted); + } + else if (deleted < 0) + mark_adjust(eap->line2, MAXLNUM, -deleted, 0L); + + if (change_occurred || deleted != 0) + changed_lines(eap->line1, 0, eap->line2 + 1, -deleted); + + curwin->w_cursor.lnum = eap->line1; + beginline(BL_WHITE | BL_FIX); + +sortend: + vim_free(nrs); + vim_free(sortbuf1); + vim_free(sortbuf2); + vim_regfree(regmatch.regprog); + if (got_int) + emsg(_(e_interr)); +} + +/* + * ":retab". + */ + void +ex_retab(exarg_T *eap) +{ + linenr_T lnum; + int got_tab = FALSE; + long num_spaces = 0; + long num_tabs; + long len; + long col; + long vcol; + long start_col = 0; /* For start of white-space string */ + long start_vcol = 0; /* For start of white-space string */ + long old_len; + char_u *ptr; + char_u *new_line = (char_u *)1; /* init to non-NULL */ + int did_undo; /* called u_save for current line */ +#ifdef FEAT_VARTABS + int *new_vts_array = NULL; + char_u *new_ts_str; /* string value of tab argument */ +#else + int temp; + int new_ts; +#endif + int save_list; + linenr_T first_line = 0; /* first changed line */ + linenr_T last_line = 0; /* last changed line */ + + save_list = curwin->w_p_list; + curwin->w_p_list = 0; /* don't want list mode here */ + +#ifdef FEAT_VARTABS + new_ts_str = eap->arg; + if (!tabstop_set(eap->arg, &new_vts_array)) + return; + while (vim_isdigit(*(eap->arg)) || *(eap->arg) == ',') + ++(eap->arg); + + // This ensures that either new_vts_array and new_ts_str are freshly + // allocated, or new_vts_array points to an existing array and new_ts_str + // is null. + if (new_vts_array == NULL) + { + new_vts_array = curbuf->b_p_vts_array; + new_ts_str = NULL; + } + else + new_ts_str = vim_strnsave(new_ts_str, eap->arg - new_ts_str); +#else + new_ts = getdigits(&(eap->arg)); + if (new_ts < 0) + { + emsg(_(e_positive)); + return; + } + if (new_ts == 0) + new_ts = curbuf->b_p_ts; +#endif + for (lnum = eap->line1; !got_int && lnum <= eap->line2; ++lnum) + { + ptr = ml_get(lnum); + col = 0; + vcol = 0; + did_undo = FALSE; + for (;;) + { + if (VIM_ISWHITE(ptr[col])) + { + if (!got_tab && num_spaces == 0) + { + /* First consecutive white-space */ + start_vcol = vcol; + start_col = col; + } + if (ptr[col] == ' ') + num_spaces++; + else + got_tab = TRUE; + } + else + { + if (got_tab || (eap->forceit && num_spaces > 1)) + { + /* Retabulate this string of white-space */ + + /* len is virtual length of white string */ + len = num_spaces = vcol - start_vcol; + num_tabs = 0; + if (!curbuf->b_p_et) + { +#ifdef FEAT_VARTABS + int t, s; + + tabstop_fromto(start_vcol, vcol, + curbuf->b_p_ts, new_vts_array, &t, &s); + num_tabs = t; + num_spaces = s; +#else + temp = new_ts - (start_vcol % new_ts); + if (num_spaces >= temp) + { + num_spaces -= temp; + num_tabs++; + } + num_tabs += num_spaces / new_ts; + num_spaces -= (num_spaces / new_ts) * new_ts; +#endif + } + if (curbuf->b_p_et || got_tab || + (num_spaces + num_tabs < len)) + { + if (did_undo == FALSE) + { + did_undo = TRUE; + if (u_save((linenr_T)(lnum - 1), + (linenr_T)(lnum + 1)) == FAIL) + { + new_line = NULL; /* flag out-of-memory */ + break; + } + } + + /* len is actual number of white characters used */ + len = num_spaces + num_tabs; + old_len = (long)STRLEN(ptr); + new_line = lalloc(old_len - col + start_col + len + 1, + TRUE); + if (new_line == NULL) + break; + if (start_col > 0) + mch_memmove(new_line, ptr, (size_t)start_col); + mch_memmove(new_line + start_col + len, + ptr + col, (size_t)(old_len - col + 1)); + ptr = new_line + start_col; + for (col = 0; col < len; col++) + ptr[col] = (col < num_tabs) ? '\t' : ' '; + ml_replace(lnum, new_line, FALSE); + if (first_line == 0) + first_line = lnum; + last_line = lnum; + ptr = new_line; + col = start_col + len; + } + } + got_tab = FALSE; + num_spaces = 0; + } + if (ptr[col] == NUL) + break; + vcol += chartabsize(ptr + col, (colnr_T)vcol); + if (has_mbyte) + col += (*mb_ptr2len)(ptr + col); + else + ++col; + } + if (new_line == NULL) /* out of memory */ + break; + line_breakcheck(); + } + if (got_int) + emsg(_(e_interr)); + +#ifdef FEAT_VARTABS + // If a single value was given then it can be considered equal to + // either the value of 'tabstop' or the value of 'vartabstop'. + if (tabstop_count(curbuf->b_p_vts_array) == 0 + && tabstop_count(new_vts_array) == 1 + && curbuf->b_p_ts == tabstop_first(new_vts_array)) + ; /* not changed */ + else if (tabstop_count(curbuf->b_p_vts_array) > 0 + && tabstop_eq(curbuf->b_p_vts_array, new_vts_array)) + ; /* not changed */ + else + redraw_curbuf_later(NOT_VALID); +#else + if (curbuf->b_p_ts != new_ts) + redraw_curbuf_later(NOT_VALID); +#endif + if (first_line != 0) + changed_lines(first_line, 0, last_line + 1, 0L); + + curwin->w_p_list = save_list; /* restore 'list' */ + +#ifdef FEAT_VARTABS + if (new_ts_str != NULL) /* set the new tabstop */ + { + // If 'vartabstop' is in use or if the value given to retab has more + // than one tabstop then update 'vartabstop'. + int *old_vts_ary = curbuf->b_p_vts_array; + + if (tabstop_count(old_vts_ary) > 0 || tabstop_count(new_vts_array) > 1) + { + set_string_option_direct((char_u *)"vts", -1, new_ts_str, + OPT_FREE|OPT_LOCAL, 0); + curbuf->b_p_vts_array = new_vts_array; + vim_free(old_vts_ary); + } + else + { + // 'vartabstop' wasn't in use and a single value was given to + // retab then update 'tabstop'. + curbuf->b_p_ts = tabstop_first(new_vts_array); + vim_free(new_vts_array); + } + vim_free(new_ts_str); + } +#else + curbuf->b_p_ts = new_ts; +#endif + coladvance(curwin->w_curswant); + + u_clearline(); +} + +/* + * :move command - move lines line1-line2 to line dest + * + * return FAIL for failure, OK otherwise + */ + int +do_move(linenr_T line1, linenr_T line2, linenr_T dest) +{ + char_u *str; + linenr_T l; + linenr_T extra; // Num lines added before line1 + linenr_T num_lines; // Num lines moved + linenr_T last_line; // Last line in file after adding new text +#ifdef FEAT_FOLDING + win_T *win; + tabpage_T *tp; +#endif + + if (dest >= line1 && dest < line2) + { + emsg(_("E134: Cannot move a range of lines into itself")); + return FAIL; + } + + // Do nothing if we are not actually moving any lines. This will prevent + // the 'modified' flag from being set without cause. + if (dest == line1 - 1 || dest == line2) + { + // Move the cursor as if lines were moved (see below) to be backwards + // compatible. + if (dest >= line1) + curwin->w_cursor.lnum = dest; + else + curwin->w_cursor.lnum = dest + (line2 - line1) + 1; + + return OK; + } + + num_lines = line2 - line1 + 1; + + /* + * First we copy the old text to its new location -- webb + * Also copy the flag that ":global" command uses. + */ + if (u_save(dest, dest + 1) == FAIL) + return FAIL; + for (extra = 0, l = line1; l <= line2; l++) + { + str = vim_strsave(ml_get(l + extra)); + if (str != NULL) + { + ml_append(dest + l - line1, str, (colnr_T)0, FALSE); + vim_free(str); + if (dest < line1) + extra++; + } + } + + /* + * Now we must be careful adjusting our marks so that we don't overlap our + * mark_adjust() calls. + * + * We adjust the marks within the old text so that they refer to the + * last lines of the file (temporarily), because we know no other marks + * will be set there since these line numbers did not exist until we added + * our new lines. + * + * Then we adjust the marks on lines between the old and new text positions + * (either forwards or backwards). + * + * And Finally we adjust the marks we put at the end of the file back to + * their final destination at the new text position -- webb + */ + last_line = curbuf->b_ml.ml_line_count; + mark_adjust_nofold(line1, line2, last_line - line2, 0L); + if (dest >= line2) + { + mark_adjust_nofold(line2 + 1, dest, -num_lines, 0L); +#ifdef FEAT_FOLDING + FOR_ALL_TAB_WINDOWS(tp, win) { + if (win->w_buffer == curbuf) + foldMoveRange(&win->w_folds, line1, line2, dest); + } +#endif + curbuf->b_op_start.lnum = dest - num_lines + 1; + curbuf->b_op_end.lnum = dest; + } + else + { + mark_adjust_nofold(dest + 1, line1 - 1, num_lines, 0L); +#ifdef FEAT_FOLDING + FOR_ALL_TAB_WINDOWS(tp, win) { + if (win->w_buffer == curbuf) + foldMoveRange(&win->w_folds, dest + 1, line1 - 1, line2); + } +#endif + curbuf->b_op_start.lnum = dest + 1; + curbuf->b_op_end.lnum = dest + num_lines; + } + curbuf->b_op_start.col = curbuf->b_op_end.col = 0; + mark_adjust_nofold(last_line - num_lines + 1, last_line, + -(last_line - dest - extra), 0L); + + /* + * Now we delete the original text -- webb + */ + if (u_save(line1 + extra - 1, line2 + extra + 1) == FAIL) + return FAIL; + + for (l = line1; l <= line2; l++) + ml_delete(line1 + extra, TRUE); + + if (!global_busy && num_lines > p_report) + smsg(NGETTEXT("%ld line moved", "%ld lines moved", num_lines), + (long)num_lines); + + /* + * Leave the cursor on the last of the moved lines. + */ + if (dest >= line1) + curwin->w_cursor.lnum = dest; + else + curwin->w_cursor.lnum = dest + (line2 - line1) + 1; + + if (line1 < dest) + { + dest += num_lines + 1; + last_line = curbuf->b_ml.ml_line_count; + if (dest > last_line + 1) + dest = last_line + 1; + changed_lines(line1, 0, dest, 0L); + } + else + changed_lines(dest + 1, 0, line1 + num_lines, 0L); + + return OK; +} + +/* + * ":copy" + */ + void +ex_copy(linenr_T line1, linenr_T line2, linenr_T n) +{ + linenr_T count; + char_u *p; + + count = line2 - line1 + 1; + curbuf->b_op_start.lnum = n + 1; + curbuf->b_op_end.lnum = n + count; + curbuf->b_op_start.col = curbuf->b_op_end.col = 0; + + /* + * there are three situations: + * 1. destination is above line1 + * 2. destination is between line1 and line2 + * 3. destination is below line2 + * + * n = destination (when starting) + * curwin->w_cursor.lnum = destination (while copying) + * line1 = start of source (while copying) + * line2 = end of source (while copying) + */ + if (u_save(n, n + 1) == FAIL) + return; + + curwin->w_cursor.lnum = n; + while (line1 <= line2) + { + /* need to use vim_strsave() because the line will be unlocked within + * ml_append() */ + p = vim_strsave(ml_get(line1)); + if (p != NULL) + { + ml_append(curwin->w_cursor.lnum, p, (colnr_T)0, FALSE); + vim_free(p); + } + /* situation 2: skip already copied lines */ + if (line1 == n) + line1 = curwin->w_cursor.lnum; + ++line1; + if (curwin->w_cursor.lnum < line1) + ++line1; + if (curwin->w_cursor.lnum < line2) + ++line2; + ++curwin->w_cursor.lnum; + } + + appended_lines_mark(n, count); + + msgmore((long)count); +} + +static char_u *prevcmd = NULL; /* the previous command */ + +#if defined(EXITFREE) || defined(PROTO) + void +free_prev_shellcmd(void) +{ + vim_free(prevcmd); +} +#endif + +/* + * Handle the ":!cmd" command. Also for ":r !cmd" and ":w !cmd" + * Bangs in the argument are replaced with the previously entered command. + * Remember the argument. + */ + void +do_bang( + int addr_count, + exarg_T *eap, + int forceit, + int do_in, + int do_out) +{ + char_u *arg = eap->arg; /* command */ + linenr_T line1 = eap->line1; /* start of range */ + linenr_T line2 = eap->line2; /* end of range */ + char_u *newcmd = NULL; /* the new command */ + int free_newcmd = FALSE; /* need to free() newcmd */ + int ins_prevcmd; + char_u *t; + char_u *p; + char_u *trailarg; + int len; + int scroll_save = msg_scroll; + + /* + * Disallow shell commands for "rvim". + * Disallow shell commands from .exrc and .vimrc in current directory for + * security reasons. + */ + if (check_restricted() || check_secure()) + return; + + if (addr_count == 0) /* :! */ + { + msg_scroll = FALSE; /* don't scroll here */ + autowrite_all(); + msg_scroll = scroll_save; + } + + /* + * Try to find an embedded bang, like in :!<cmd> ! [args] + * (:!! is indicated by the 'forceit' variable) + */ + ins_prevcmd = forceit; + trailarg = arg; + do + { + len = (int)STRLEN(trailarg) + 1; + if (newcmd != NULL) + len += (int)STRLEN(newcmd); + if (ins_prevcmd) + { + if (prevcmd == NULL) + { + emsg(_(e_noprev)); + vim_free(newcmd); + return; + } + len += (int)STRLEN(prevcmd); + } + if ((t = alloc((unsigned)len)) == NULL) + { + vim_free(newcmd); + return; + } + *t = NUL; + if (newcmd != NULL) + STRCAT(t, newcmd); + if (ins_prevcmd) + STRCAT(t, prevcmd); + p = t + STRLEN(t); + STRCAT(t, trailarg); + vim_free(newcmd); + newcmd = t; + + /* + * Scan the rest of the argument for '!', which is replaced by the + * previous command. "\!" is replaced by "!" (this is vi compatible). + */ + trailarg = NULL; + while (*p) + { + if (*p == '!') + { + if (p > newcmd && p[-1] == '\\') + STRMOVE(p - 1, p); + else + { + trailarg = p; + *trailarg++ = NUL; + ins_prevcmd = TRUE; + break; + } + } + ++p; + } + } while (trailarg != NULL); + + vim_free(prevcmd); + prevcmd = newcmd; + + if (bangredo) /* put cmd in redo buffer for ! command */ + { + /* If % or # appears in the command, it must have been escaped. + * Reescape them, so that redoing them does not substitute them by the + * buffername. */ + char_u *cmd = vim_strsave_escaped(prevcmd, (char_u *)"%#"); + + if (cmd != NULL) + { + AppendToRedobuffLit(cmd, -1); + vim_free(cmd); + } + else + AppendToRedobuffLit(prevcmd, -1); + AppendToRedobuff((char_u *)"\n"); + bangredo = FALSE; + } + /* + * Add quotes around the command, for shells that need them. + */ + if (*p_shq != NUL) + { + newcmd = alloc((unsigned)(STRLEN(prevcmd) + 2 * STRLEN(p_shq) + 1)); + if (newcmd == NULL) + return; + STRCPY(newcmd, p_shq); + STRCAT(newcmd, prevcmd); + STRCAT(newcmd, p_shq); + free_newcmd = TRUE; + } + if (addr_count == 0) /* :! */ + { + /* echo the command */ + msg_start(); + msg_putchar(':'); + msg_putchar('!'); + msg_outtrans(newcmd); + msg_clr_eos(); + windgoto(msg_row, msg_col); + + do_shell(newcmd, 0); + } + else /* :range! */ + { + /* Careful: This may recursively call do_bang() again! (because of + * autocommands) */ + do_filter(line1, line2, eap, newcmd, do_in, do_out); + apply_autocmds(EVENT_SHELLFILTERPOST, NULL, NULL, FALSE, curbuf); + } + if (free_newcmd) + vim_free(newcmd); +} + +/* + * do_filter: filter lines through a command given by the user + * + * We mostly use temp files and the call_shell() routine here. This would + * normally be done using pipes on a UNIX machine, but this is more portable + * to non-unix machines. The call_shell() routine needs to be able + * to deal with redirection somehow, and should handle things like looking + * at the PATH env. variable, and adding reasonable extensions to the + * command name given by the user. All reasonable versions of call_shell() + * do this. + * Alternatively, if on Unix and redirecting input or output, but not both, + * and the 'shelltemp' option isn't set, use pipes. + * We use input redirection if do_in is TRUE. + * We use output redirection if do_out is TRUE. + */ + static void +do_filter( + linenr_T line1, + linenr_T line2, + exarg_T *eap, /* for forced 'ff' and 'fenc' */ + char_u *cmd, + int do_in, + int do_out) +{ + char_u *itmp = NULL; + char_u *otmp = NULL; + linenr_T linecount; + linenr_T read_linecount; + pos_T cursor_save; + char_u *cmd_buf; + buf_T *old_curbuf = curbuf; + int shell_flags = 0; + + if (*cmd == NUL) /* no filter command */ + return; + + cursor_save = curwin->w_cursor; + linecount = line2 - line1 + 1; + curwin->w_cursor.lnum = line1; + curwin->w_cursor.col = 0; + changed_line_abv_curs(); + invalidate_botline(); + + /* + * When using temp files: + * 1. * Form temp file names + * 2. * Write the lines to a temp file + * 3. Run the filter command on the temp file + * 4. * Read the output of the command into the buffer + * 5. * Delete the original lines to be filtered + * 6. * Remove the temp files + * + * When writing the input with a pipe or when catching the output with a + * pipe only need to do 3. + */ + + if (do_out) + shell_flags |= SHELL_DOOUT; + +#ifdef FEAT_FILTERPIPE + if (!do_in && do_out && !p_stmp) + { + /* Use a pipe to fetch stdout of the command, do not use a temp file. */ + shell_flags |= SHELL_READ; + curwin->w_cursor.lnum = line2; + } + else if (do_in && !do_out && !p_stmp) + { + /* Use a pipe to write stdin of the command, do not use a temp file. */ + shell_flags |= SHELL_WRITE; + curbuf->b_op_start.lnum = line1; + curbuf->b_op_end.lnum = line2; + } + else if (do_in && do_out && !p_stmp) + { + /* Use a pipe to write stdin and fetch stdout of the command, do not + * use a temp file. */ + shell_flags |= SHELL_READ|SHELL_WRITE; + curbuf->b_op_start.lnum = line1; + curbuf->b_op_end.lnum = line2; + curwin->w_cursor.lnum = line2; + } + else +#endif + if ((do_in && (itmp = vim_tempname('i', FALSE)) == NULL) + || (do_out && (otmp = vim_tempname('o', FALSE)) == NULL)) + { + emsg(_(e_notmp)); + goto filterend; + } + +/* + * The writing and reading of temp files will not be shown. + * Vi also doesn't do this and the messages are not very informative. + */ + ++no_wait_return; /* don't call wait_return() while busy */ + if (itmp != NULL && buf_write(curbuf, itmp, NULL, line1, line2, eap, + FALSE, FALSE, FALSE, TRUE) == FAIL) + { + msg_putchar('\n'); /* keep message from buf_write() */ + --no_wait_return; +#if defined(FEAT_EVAL) + if (!aborting()) +#endif + (void)semsg(_(e_notcreate), itmp); /* will call wait_return */ + goto filterend; + } + if (curbuf != old_curbuf) + goto filterend; + + if (!do_out) + msg_putchar('\n'); + + /* Create the shell command in allocated memory. */ + cmd_buf = make_filter_cmd(cmd, itmp, otmp); + if (cmd_buf == NULL) + goto filterend; + + windgoto((int)Rows - 1, 0); + cursor_on(); + + /* + * When not redirecting the output the command can write anything to the + * screen. If 'shellredir' is equal to ">", screen may be messed up by + * stderr output of external command. Clear the screen later. + * If do_in is FALSE, this could be something like ":r !cat", which may + * also mess up the screen, clear it later. + */ + if (!do_out || STRCMP(p_srr, ">") == 0 || !do_in) + redraw_later_clear(); + + if (do_out) + { + if (u_save((linenr_T)(line2), (linenr_T)(line2 + 1)) == FAIL) + { + vim_free(cmd_buf); + goto error; + } + redraw_curbuf_later(VALID); + } + read_linecount = curbuf->b_ml.ml_line_count; + + /* + * When call_shell() fails wait_return() is called to give the user a + * chance to read the error messages. Otherwise errors are ignored, so you + * can see the error messages from the command that appear on stdout; use + * 'u' to fix the text + * Switch to cooked mode when not redirecting stdin, avoids that something + * like ":r !cat" hangs. + * Pass on the SHELL_DOOUT flag when the output is being redirected. + */ + if (call_shell(cmd_buf, SHELL_FILTER | SHELL_COOKED | shell_flags)) + { + redraw_later_clear(); + wait_return(FALSE); + } + vim_free(cmd_buf); + + did_check_timestamps = FALSE; + need_check_timestamps = TRUE; + + /* When interrupting the shell command, it may still have produced some + * useful output. Reset got_int here, so that readfile() won't cancel + * reading. */ + ui_breakcheck(); + got_int = FALSE; + + if (do_out) + { + if (otmp != NULL) + { + if (readfile(otmp, NULL, line2, (linenr_T)0, (linenr_T)MAXLNUM, + eap, READ_FILTER) != OK) + { +#if defined(FEAT_EVAL) + if (!aborting()) +#endif + { + msg_putchar('\n'); + semsg(_(e_notread), otmp); + } + goto error; + } + if (curbuf != old_curbuf) + goto filterend; + } + + read_linecount = curbuf->b_ml.ml_line_count - read_linecount; + + if (shell_flags & SHELL_READ) + { + curbuf->b_op_start.lnum = line2 + 1; + curbuf->b_op_end.lnum = curwin->w_cursor.lnum; + appended_lines_mark(line2, read_linecount); + } + + if (do_in) + { + if (cmdmod.keepmarks || vim_strchr(p_cpo, CPO_REMMARK) == NULL) + { + if (read_linecount >= linecount) + /* move all marks from old lines to new lines */ + mark_adjust(line1, line2, linecount, 0L); + else + { + /* move marks from old lines to new lines, delete marks + * that are in deleted lines */ + mark_adjust(line1, line1 + read_linecount - 1, + linecount, 0L); + mark_adjust(line1 + read_linecount, line2, MAXLNUM, 0L); + } + } + + /* + * Put cursor on first filtered line for ":range!cmd". + * Adjust '[ and '] (set by buf_write()). + */ + curwin->w_cursor.lnum = line1; + del_lines(linecount, TRUE); + curbuf->b_op_start.lnum -= linecount; /* adjust '[ */ + curbuf->b_op_end.lnum -= linecount; /* adjust '] */ + write_lnum_adjust(-linecount); /* adjust last line + for next write */ +#ifdef FEAT_FOLDING + foldUpdate(curwin, curbuf->b_op_start.lnum, curbuf->b_op_end.lnum); +#endif + } + else + { + /* + * Put cursor on last new line for ":r !cmd". + */ + linecount = curbuf->b_op_end.lnum - curbuf->b_op_start.lnum + 1; + curwin->w_cursor.lnum = curbuf->b_op_end.lnum; + } + + beginline(BL_WHITE | BL_FIX); /* cursor on first non-blank */ + --no_wait_return; + + if (linecount > p_report) + { + if (do_in) + { + vim_snprintf(msg_buf, sizeof(msg_buf), + _("%ld lines filtered"), (long)linecount); + if (msg(msg_buf) && !msg_scroll) + /* save message to display it after redraw */ + set_keep_msg((char_u *)msg_buf, 0); + } + else + msgmore((long)linecount); + } + } + else + { +error: + /* put cursor back in same position for ":w !cmd" */ + curwin->w_cursor = cursor_save; + --no_wait_return; + wait_return(FALSE); + } + +filterend: + + if (curbuf != old_curbuf) + { + --no_wait_return; + emsg(_("E135: *Filter* Autocommands must not change current buffer")); + } + if (itmp != NULL) + mch_remove(itmp); + if (otmp != NULL) + mch_remove(otmp); + vim_free(itmp); + vim_free(otmp); +} + +/* + * Call a shell to execute a command. + * When "cmd" is NULL start an interactive shell. + */ + void +do_shell( + char_u *cmd, + int flags) /* may be SHELL_DOOUT when output is redirected */ +{ + buf_T *buf; +#ifndef FEAT_GUI_MSWIN + int save_nwr; +#endif +#ifdef MSWIN + int winstart = FALSE; +#endif + + /* + * Disallow shell commands for "rvim". + * Disallow shell commands from .exrc and .vimrc in current directory for + * security reasons. + */ + if (check_restricted() || check_secure()) + { + msg_end(); + return; + } + +#ifdef MSWIN + /* + * Check if ":!start" is used. + */ + if (cmd != NULL) + winstart = (STRNICMP(cmd, "start ", 6) == 0); +#endif + + /* + * For autocommands we want to get the output on the current screen, to + * avoid having to type return below. + */ + msg_putchar('\r'); /* put cursor at start of line */ + if (!autocmd_busy) + { +#ifdef MSWIN + if (!winstart) +#endif + stoptermcap(); + } +#ifdef MSWIN + if (!winstart) +#endif + msg_putchar('\n'); /* may shift screen one line up */ + + /* warning message before calling the shell */ + if (p_warn && !autocmd_busy && msg_silent == 0) + FOR_ALL_BUFFERS(buf) + if (bufIsChangedNotTerm(buf)) + { +#ifdef FEAT_GUI_MSWIN + if (!winstart) + starttermcap(); /* don't want a message box here */ +#endif + msg_puts(_("[No write since last change]\n")); +#ifdef FEAT_GUI_MSWIN + if (!winstart) + stoptermcap(); +#endif + break; + } + + /* This windgoto is required for when the '\n' resulted in a "delete line + * 1" command to the terminal. */ + if (!swapping_screen()) + windgoto(msg_row, msg_col); + cursor_on(); + (void)call_shell(cmd, SHELL_COOKED | flags); + did_check_timestamps = FALSE; + need_check_timestamps = TRUE; + + /* + * put the message cursor at the end of the screen, avoids wait_return() + * to overwrite the text that the external command showed + */ + if (!swapping_screen()) + { + msg_row = Rows - 1; + msg_col = 0; + } + + if (autocmd_busy) + { + if (msg_silent == 0) + redraw_later_clear(); + } + else + { + /* + * For ":sh" there is no need to call wait_return(), just redraw. + * Also for the Win32 GUI (the output is in a console window). + * Otherwise there is probably text on the screen that the user wants + * to read before redrawing, so call wait_return(). + */ +#ifndef FEAT_GUI_MSWIN + if (cmd == NULL +# ifdef WIN3264 + || (winstart && !need_wait_return) +# endif + ) + { + if (msg_silent == 0) + redraw_later_clear(); + need_wait_return = FALSE; + } + else + { + /* + * If we switch screens when starttermcap() is called, we really + * want to wait for "hit return to continue". + */ + save_nwr = no_wait_return; + if (swapping_screen()) + no_wait_return = FALSE; +# ifdef AMIGA + wait_return(term_console ? -1 : msg_silent == 0); /* see below */ +# else + wait_return(msg_silent == 0); +# endif + no_wait_return = save_nwr; + } +#endif /* FEAT_GUI_W32 */ + +#ifdef MSWIN + if (!winstart) /* if winstart==TRUE, never stopped termcap! */ +#endif + starttermcap(); /* start termcap if not done by wait_return() */ + + /* + * In an Amiga window redrawing is caused by asking the window size. + * If we got an interrupt this will not work. The chance that the + * window size is wrong is very small, but we need to redraw the + * screen. Don't do this if ':' hit in wait_return(). THIS IS UGLY + * but it saves an extra redraw. + */ +#ifdef AMIGA + if (skip_redraw) /* ':' hit in wait_return() */ + { + if (msg_silent == 0) + redraw_later_clear(); + } + else if (term_console) + { + OUT_STR(IF_EB("\033[0 q", ESC_STR "[0 q")); /* get window size */ + if (got_int && msg_silent == 0) + redraw_later_clear(); /* if got_int is TRUE, redraw needed */ + else + must_redraw = 0; /* no extra redraw needed */ + } +#endif + } + + /* display any error messages now */ + display_errors(); + + apply_autocmds(EVENT_SHELLCMDPOST, NULL, NULL, FALSE, curbuf); +} + +#if !defined(UNIX) + static char_u * +find_pipe(char_u *cmd) +{ + char_u *p; + int inquote = FALSE; + + for (p = cmd; *p != NUL; ++p) + { + if (!inquote && *p == '|') + return p; + if (*p == '"') + inquote = !inquote; + else if (rem_backslash(p)) + ++p; + } + return NULL; +} +#endif + +/* + * Create a shell command from a command string, input redirection file and + * output redirection file. + * Returns an allocated string with the shell command, or NULL for failure. + */ + char_u * +make_filter_cmd( + char_u *cmd, /* command */ + char_u *itmp, /* NULL or name of input file */ + char_u *otmp) /* NULL or name of output file */ +{ + char_u *buf; + long_u len; + +#if defined(UNIX) + int is_fish_shell; + char_u *shell_name = get_isolated_shell_name(); + + /* Account for fish's different syntax for subshells */ + is_fish_shell = (fnamecmp(shell_name, "fish") == 0); + vim_free(shell_name); + if (is_fish_shell) + len = (long_u)STRLEN(cmd) + 13; /* "begin; " + "; end" + NUL */ + else +#endif + len = (long_u)STRLEN(cmd) + 3; /* "()" + NUL */ + if (itmp != NULL) + len += (long_u)STRLEN(itmp) + 9; /* " { < " + " } " */ + if (otmp != NULL) + len += (long_u)STRLEN(otmp) + (long_u)STRLEN(p_srr) + 2; /* " " */ + buf = lalloc(len, TRUE); + if (buf == NULL) + return NULL; + +#if defined(UNIX) + /* + * Put braces around the command (for concatenated commands) when + * redirecting input and/or output. + */ + if (itmp != NULL || otmp != NULL) + { + if (is_fish_shell) + vim_snprintf((char *)buf, len, "begin; %s; end", (char *)cmd); + else + vim_snprintf((char *)buf, len, "(%s)", (char *)cmd); + } + else + STRCPY(buf, cmd); + if (itmp != NULL) + { + STRCAT(buf, " < "); + STRCAT(buf, itmp); + } +#else + /* + * For shells that don't understand braces around commands, at least allow + * the use of commands in a pipe. + */ + STRCPY(buf, cmd); + if (itmp != NULL) + { + char_u *p; + + /* + * If there is a pipe, we have to put the '<' in front of it. + * Don't do this when 'shellquote' is not empty, otherwise the + * redirection would be inside the quotes. + */ + if (*p_shq == NUL) + { + p = find_pipe(buf); + if (p != NULL) + *p = NUL; + } + STRCAT(buf, " <"); /* " < " causes problems on Amiga */ + STRCAT(buf, itmp); + if (*p_shq == NUL) + { + p = find_pipe(cmd); + if (p != NULL) + { + STRCAT(buf, " "); /* insert a space before the '|' for DOS */ + STRCAT(buf, p); + } + } + } +#endif + if (otmp != NULL) + append_redir(buf, (int)len, p_srr, otmp); + + return buf; +} + +/* + * Append output redirection for file "fname" to the end of string buffer + * "buf[buflen]" + * Works with the 'shellredir' and 'shellpipe' options. + * The caller should make sure that there is enough room: + * STRLEN(opt) + STRLEN(fname) + 3 + */ + void +append_redir( + char_u *buf, + int buflen, + char_u *opt, + char_u *fname) +{ + char_u *p; + char_u *end; + + end = buf + STRLEN(buf); + /* find "%s" */ + for (p = opt; (p = vim_strchr(p, '%')) != NULL; ++p) + { + if (p[1] == 's') /* found %s */ + break; + if (p[1] == '%') /* skip %% */ + ++p; + } + if (p != NULL) + { + *end = ' '; /* not really needed? Not with sh, ksh or bash */ + vim_snprintf((char *)end + 1, (size_t)(buflen - (end + 1 - buf)), + (char *)opt, (char *)fname); + } + else + vim_snprintf((char *)end, (size_t)(buflen - (end - buf)), +#ifdef FEAT_QUICKFIX + " %s %s", +#else + " %s%s", /* " > %s" causes problems on Amiga */ +#endif + (char *)opt, (char *)fname); +} + +#if defined(FEAT_VIMINFO) || defined(PROTO) + +static int read_viminfo_barline(vir_T *virp, int got_encoding, int force, int writing); +static void write_viminfo_version(FILE *fp_out); +static void write_viminfo_barlines(vir_T *virp, FILE *fp_out); +static int viminfo_errcnt; + + static int +no_viminfo(void) +{ + /* "vim -i NONE" does not read or write a viminfo file */ + return STRCMP(p_viminfofile, "NONE") == 0; +} + +/* + * Report an error for reading a viminfo file. + * Count the number of errors. When there are more than 10, return TRUE. + */ + int +viminfo_error(char *errnum, char *message, char_u *line) +{ + vim_snprintf((char *)IObuff, IOSIZE, _("%sviminfo: %s in line: "), + errnum, message); + STRNCAT(IObuff, line, IOSIZE - STRLEN(IObuff) - 1); + if (IObuff[STRLEN(IObuff) - 1] == '\n') + IObuff[STRLEN(IObuff) - 1] = NUL; + emsg((char *)IObuff); + if (++viminfo_errcnt >= 10) + { + emsg(_("E136: viminfo: Too many errors, skipping rest of file")); + return TRUE; + } + return FALSE; +} + +/* + * read_viminfo() -- Read the viminfo file. Registers etc. which are already + * set are not over-written unless "flags" includes VIF_FORCEIT. -- webb + */ + int +read_viminfo( + char_u *file, /* file name or NULL to use default name */ + int flags) /* VIF_WANT_INFO et al. */ +{ + FILE *fp; + char_u *fname; + + if (no_viminfo()) + return FAIL; + + fname = viminfo_filename(file); /* get file name in allocated buffer */ + if (fname == NULL) + return FAIL; + fp = mch_fopen((char *)fname, READBIN); + + if (p_verbose > 0) + { + verbose_enter(); + smsg(_("Reading viminfo file \"%s\"%s%s%s"), + fname, + (flags & VIF_WANT_INFO) ? _(" info") : "", + (flags & VIF_WANT_MARKS) ? _(" marks") : "", + (flags & VIF_GET_OLDFILES) ? _(" oldfiles") : "", + fp == NULL ? _(" FAILED") : ""); + verbose_leave(); + } + + vim_free(fname); + if (fp == NULL) + return FAIL; + + viminfo_errcnt = 0; + do_viminfo(fp, NULL, flags); + + fclose(fp); + return OK; +} + +/* + * Write the viminfo file. The old one is read in first so that effectively a + * merge of current info and old info is done. This allows multiple vims to + * run simultaneously, without losing any marks etc. + * If "forceit" is TRUE, then the old file is not read in, and only internal + * info is written to the file. + */ + void +write_viminfo(char_u *file, int forceit) +{ + char_u *fname; + FILE *fp_in = NULL; /* input viminfo file, if any */ + FILE *fp_out = NULL; /* output viminfo file */ + char_u *tempname = NULL; /* name of temp viminfo file */ + stat_T st_new; /* mch_stat() of potential new file */ +#if defined(UNIX) || defined(VMS) + mode_t umask_save; +#endif +#ifdef UNIX + int shortname = FALSE; /* use 8.3 file name */ + stat_T st_old; /* mch_stat() of existing viminfo file */ +#endif +#ifdef WIN3264 + int hidden = FALSE; +#endif + + if (no_viminfo()) + return; + + fname = viminfo_filename(file); /* may set to default if NULL */ + if (fname == NULL) + return; + + fp_in = mch_fopen((char *)fname, READBIN); + if (fp_in == NULL) + { + int fd; + + /* if it does exist, but we can't read it, don't try writing */ + if (mch_stat((char *)fname, &st_new) == 0) + goto end; + + /* Create the new .viminfo non-accessible for others, because it may + * contain text from non-accessible documents. It is up to the user to + * widen access (e.g. to a group). This may also fail if there is a + * race condition, then just give up. */ + fd = mch_open((char *)fname, + O_CREAT|O_EXTRA|O_EXCL|O_WRONLY|O_NOFOLLOW, 0600); + if (fd < 0) + goto end; + fp_out = fdopen(fd, WRITEBIN); + } + else + { + /* + * There is an existing viminfo file. Create a temporary file to + * write the new viminfo into, in the same directory as the + * existing viminfo file, which will be renamed once all writing is + * successful. + */ +#ifdef UNIX + /* + * For Unix we check the owner of the file. It's not very nice to + * overwrite a user's viminfo file after a "su root", with a + * viminfo file that the user can't read. + */ + st_old.st_dev = (dev_t)0; + st_old.st_ino = 0; + st_old.st_mode = 0600; + if (mch_stat((char *)fname, &st_old) == 0 + && getuid() != ROOT_UID + && !(st_old.st_uid == getuid() + ? (st_old.st_mode & 0200) + : (st_old.st_gid == getgid() + ? (st_old.st_mode & 0020) + : (st_old.st_mode & 0002)))) + { + int tt = msg_didany; + + /* avoid a wait_return for this message, it's annoying */ + semsg(_("E137: Viminfo file is not writable: %s"), fname); + msg_didany = tt; + fclose(fp_in); + goto end; + } +#endif +#ifdef WIN3264 + /* Get the file attributes of the existing viminfo file. */ + hidden = mch_ishidden(fname); +#endif + + /* + * Make tempname, find one that does not exist yet. + * Beware of a race condition: If someone logs out and all Vim + * instances exit at the same time a temp file might be created between + * stat() and open(). Use mch_open() with O_EXCL to avoid that. + * May try twice: Once normal and once with shortname set, just in + * case somebody puts his viminfo file in an 8.3 filesystem. + */ + for (;;) + { + int next_char = 'z'; + char_u *wp; + + tempname = buf_modname( +#ifdef UNIX + shortname, +#else + FALSE, +#endif + fname, +#ifdef VMS + (char_u *)"-tmp", +#else + (char_u *)".tmp", +#endif + FALSE); + if (tempname == NULL) /* out of memory */ + break; + + /* + * Try a series of names. Change one character, just before + * the extension. This should also work for an 8.3 + * file name, when after adding the extension it still is + * the same file as the original. + */ + wp = tempname + STRLEN(tempname) - 5; + if (wp < gettail(tempname)) /* empty file name? */ + wp = gettail(tempname); + for (;;) + { + /* + * Check if tempfile already exists. Never overwrite an + * existing file! + */ + if (mch_stat((char *)tempname, &st_new) == 0) + { +#ifdef UNIX + /* + * Check if tempfile is same as original file. May happen + * when modname() gave the same file back. E.g. silly + * link, or file name-length reached. Try again with + * shortname set. + */ + if (!shortname && st_new.st_dev == st_old.st_dev + && st_new.st_ino == st_old.st_ino) + { + VIM_CLEAR(tempname); + shortname = TRUE; + break; + } +#endif + } + else + { + /* Try creating the file exclusively. This may fail if + * another Vim tries to do it at the same time. */ +#ifdef VMS + /* fdopen() fails for some reason */ + umask_save = umask(077); + fp_out = mch_fopen((char *)tempname, WRITEBIN); + (void)umask(umask_save); +#else + int fd; + + /* Use mch_open() to be able to use O_NOFOLLOW and set file + * protection: + * Unix: same as original file, but strip s-bit. Reset + * umask to avoid it getting in the way. + * Others: r&w for user only. */ +# ifdef UNIX + umask_save = umask(0); + fd = mch_open((char *)tempname, + O_CREAT|O_EXTRA|O_EXCL|O_WRONLY|O_NOFOLLOW, + (int)((st_old.st_mode & 0777) | 0600)); + (void)umask(umask_save); +# else + fd = mch_open((char *)tempname, + O_CREAT|O_EXTRA|O_EXCL|O_WRONLY|O_NOFOLLOW, 0600); +# endif + if (fd < 0) + { + fp_out = NULL; +# ifdef EEXIST + /* Avoid trying lots of names while the problem is lack + * of premission, only retry if the file already + * exists. */ + if (errno != EEXIST) + break; +# endif + } + else + fp_out = fdopen(fd, WRITEBIN); +#endif /* VMS */ + if (fp_out != NULL) + break; + } + + /* Assume file exists, try again with another name. */ + if (next_char == 'a' - 1) + { + /* They all exist? Must be something wrong! Don't write + * the viminfo file then. */ + semsg(_("E929: Too many viminfo temp files, like %s!"), + tempname); + break; + } + *wp = next_char; + --next_char; + } + + if (tempname != NULL) + break; + /* continue if shortname was set */ + } + +#if defined(UNIX) && defined(HAVE_FCHOWN) + if (tempname != NULL && fp_out != NULL) + { + stat_T tmp_st; + + /* + * Make sure the original owner can read/write the tempfile and + * otherwise preserve permissions, making sure the group matches. + */ + if (mch_stat((char *)tempname, &tmp_st) >= 0) + { + if (st_old.st_uid != tmp_st.st_uid) + /* Changing the owner might fail, in which case the + * file will now owned by the current user, oh well. */ + vim_ignored = fchown(fileno(fp_out), st_old.st_uid, -1); + if (st_old.st_gid != tmp_st.st_gid + && fchown(fileno(fp_out), -1, st_old.st_gid) == -1) + /* can't set the group to what it should be, remove + * group permissions */ + (void)mch_setperm(tempname, 0600); + } + else + /* can't stat the file, set conservative permissions */ + (void)mch_setperm(tempname, 0600); + } +#endif + } + + /* + * Check if the new viminfo file can be written to. + */ + if (fp_out == NULL) + { + semsg(_("E138: Can't write viminfo file %s!"), + (fp_in == NULL || tempname == NULL) ? fname : tempname); + if (fp_in != NULL) + fclose(fp_in); + goto end; + } + + if (p_verbose > 0) + { + verbose_enter(); + smsg(_("Writing viminfo file \"%s\""), fname); + verbose_leave(); + } + + viminfo_errcnt = 0; + do_viminfo(fp_in, fp_out, forceit ? 0 : (VIF_WANT_INFO | VIF_WANT_MARKS)); + + if (fclose(fp_out) == EOF) + ++viminfo_errcnt; + + if (fp_in != NULL) + { + fclose(fp_in); + + /* In case of an error keep the original viminfo file. Otherwise + * rename the newly written file. Give an error if that fails. */ + if (viminfo_errcnt == 0) + { + if (vim_rename(tempname, fname) == -1) + { + ++viminfo_errcnt; + semsg(_("E886: Can't rename viminfo file to %s!"), fname); + } +# ifdef WIN3264 + /* If the viminfo file was hidden then also hide the new file. */ + else if (hidden) + mch_hide(fname); +# endif + } + if (viminfo_errcnt > 0) + mch_remove(tempname); + } + +end: + vim_free(fname); + vim_free(tempname); +} + +/* + * Get the viminfo file name to use. + * If "file" is given and not empty, use it (has already been expanded by + * cmdline functions). + * Otherwise use "-i file_name", value from 'viminfo' or the default, and + * expand environment variables. + * Returns an allocated string. NULL when out of memory. + */ + static char_u * +viminfo_filename(char_u *file) +{ + if (file == NULL || *file == NUL) + { + if (*p_viminfofile != NUL) + file = p_viminfofile; + else if ((file = find_viminfo_parameter('n')) == NULL || *file == NUL) + { +#ifdef VIMINFO_FILE2 +# ifdef VMS + if (mch_getenv((char_u *)"SYS$LOGIN") == NULL) +# else +# ifdef MSWIN + /* Use $VIM only if $HOME is the default "C:/". */ + if (STRCMP(vim_getenv((char_u *)"HOME", NULL), "C:/") == 0 + && mch_getenv((char_u *)"HOME") == NULL) +# else + if (mch_getenv((char_u *)"HOME") == NULL) +# endif +# endif + { + /* don't use $VIM when not available. */ + expand_env((char_u *)"$VIM", NameBuff, MAXPATHL); + if (STRCMP("$VIM", NameBuff) != 0) /* $VIM was expanded */ + file = (char_u *)VIMINFO_FILE2; + else + file = (char_u *)VIMINFO_FILE; + } + else +#endif + file = (char_u *)VIMINFO_FILE; + } + expand_env(file, NameBuff, MAXPATHL); + file = NameBuff; + } + return vim_strsave(file); +} + +/* + * do_viminfo() -- Should only be called from read_viminfo() & write_viminfo(). + */ + static void +do_viminfo(FILE *fp_in, FILE *fp_out, int flags) +{ + int eof = FALSE; + vir_T vir; + int merge = FALSE; + int do_copy_marks = FALSE; + garray_T buflist; + + if ((vir.vir_line = alloc(LSIZE)) == NULL) + return; + vir.vir_fd = fp_in; + vir.vir_conv.vc_type = CONV_NONE; + ga_init2(&vir.vir_barlines, (int)sizeof(char_u *), 100); + vir.vir_version = -1; + + if (fp_in != NULL) + { + if (flags & VIF_WANT_INFO) + { + if (fp_out != NULL) + { + /* Registers and marks are read and kept separate from what + * this Vim is using. They are merged when writing. */ + prepare_viminfo_registers(); + prepare_viminfo_marks(); + } + + eof = read_viminfo_up_to_marks(&vir, + flags & VIF_FORCEIT, fp_out != NULL); + merge = TRUE; + } + else if (flags != 0) + /* Skip info, find start of marks */ + while (!(eof = viminfo_readline(&vir)) + && vir.vir_line[0] != '>') + ; + + do_copy_marks = (flags & + (VIF_WANT_MARKS | VIF_GET_OLDFILES | VIF_FORCEIT)); + } + + if (fp_out != NULL) + { + /* Write the info: */ + fprintf(fp_out, _("# This viminfo file was generated by Vim %s.\n"), + VIM_VERSION_MEDIUM); + fputs(_("# You may edit it if you're careful!\n\n"), fp_out); + write_viminfo_version(fp_out); + fputs(_("# Value of 'encoding' when this file was written\n"), fp_out); + fprintf(fp_out, "*encoding=%s\n\n", p_enc); + write_viminfo_search_pattern(fp_out); + write_viminfo_sub_string(fp_out); +#ifdef FEAT_CMDHIST + write_viminfo_history(fp_out, merge); +#endif + write_viminfo_registers(fp_out); + finish_viminfo_registers(); +#ifdef FEAT_EVAL + write_viminfo_varlist(fp_out); +#endif + write_viminfo_filemarks(fp_out); + finish_viminfo_marks(); + write_viminfo_bufferlist(fp_out); + write_viminfo_barlines(&vir, fp_out); + + if (do_copy_marks) + ga_init2(&buflist, sizeof(buf_T *), 50); + write_viminfo_marks(fp_out, do_copy_marks ? &buflist : NULL); + } + + if (do_copy_marks) + { + copy_viminfo_marks(&vir, fp_out, &buflist, eof, flags); + if (fp_out != NULL) + ga_clear(&buflist); + } + + vim_free(vir.vir_line); + if (vir.vir_conv.vc_type != CONV_NONE) + convert_setup(&vir.vir_conv, NULL, NULL); + ga_clear_strings(&vir.vir_barlines); +} + +/* + * read_viminfo_up_to_marks() -- Only called from do_viminfo(). Reads in the + * first part of the viminfo file which contains everything but the marks that + * are local to a file. Returns TRUE when end-of-file is reached. -- webb + */ + static int +read_viminfo_up_to_marks( + vir_T *virp, + int forceit, + int writing) +{ + int eof; + buf_T *buf; + int got_encoding = FALSE; + +#ifdef FEAT_CMDHIST + prepare_viminfo_history(forceit ? 9999 : 0, writing); +#endif + + eof = viminfo_readline(virp); + while (!eof && virp->vir_line[0] != '>') + { + switch (virp->vir_line[0]) + { + /* Characters reserved for future expansion, ignored now */ + case '+': /* "+40 /path/dir file", for running vim without args */ + case '^': /* to be defined */ + case '<': /* long line - ignored */ + /* A comment or empty line. */ + case NUL: + case '\r': + case '\n': + case '#': + eof = viminfo_readline(virp); + break; + case '|': + eof = read_viminfo_barline(virp, got_encoding, + forceit, writing); + break; + case '*': /* "*encoding=value" */ + got_encoding = TRUE; + eof = viminfo_encoding(virp); + break; + case '!': /* global variable */ +#ifdef FEAT_EVAL + eof = read_viminfo_varlist(virp, writing); +#else + eof = viminfo_readline(virp); +#endif + break; + case '%': /* entry for buffer list */ + eof = read_viminfo_bufferlist(virp, writing); + break; + case '"': + /* When registers are in bar lines skip the old style register + * lines. */ + if (virp->vir_version < VIMINFO_VERSION_WITH_REGISTERS) + eof = read_viminfo_register(virp, forceit); + else + do { + eof = viminfo_readline(virp); + } while (!eof && (virp->vir_line[0] == TAB + || virp->vir_line[0] == '<')); + break; + case '/': /* Search string */ + case '&': /* Substitute search string */ + case '~': /* Last search string, followed by '/' or '&' */ + eof = read_viminfo_search_pattern(virp, forceit); + break; + case '$': + eof = read_viminfo_sub_string(virp, forceit); + break; + case ':': + case '?': + case '=': + case '@': +#ifdef FEAT_CMDHIST + /* When history is in bar lines skip the old style history + * lines. */ + if (virp->vir_version < VIMINFO_VERSION_WITH_HISTORY) + eof = read_viminfo_history(virp, writing); + else +#endif + eof = viminfo_readline(virp); + break; + case '-': + case '\'': + /* When file marks are in bar lines skip the old style lines. */ + if (virp->vir_version < VIMINFO_VERSION_WITH_MARKS) + eof = read_viminfo_filemark(virp, forceit); + else + eof = viminfo_readline(virp); + break; + default: + if (viminfo_error("E575: ", _("Illegal starting char"), + virp->vir_line)) + eof = TRUE; + else + eof = viminfo_readline(virp); + break; + } + } + +#ifdef FEAT_CMDHIST + /* Finish reading history items. */ + if (!writing) + finish_viminfo_history(virp); +#endif + + /* Change file names to buffer numbers for fmarks. */ + FOR_ALL_BUFFERS(buf) + fmarks_check_names(buf); + + return eof; +} + +/* + * Compare the 'encoding' value in the viminfo file with the current value of + * 'encoding'. If different and the 'c' flag is in 'viminfo', setup for + * conversion of text with iconv() in viminfo_readstring(). + */ + static int +viminfo_encoding(vir_T *virp) +{ + char_u *p; + int i; + + if (get_viminfo_parameter('c') != 0) + { + p = vim_strchr(virp->vir_line, '='); + if (p != NULL) + { + /* remove trailing newline */ + ++p; + for (i = 0; vim_isprintc(p[i]); ++i) + ; + p[i] = NUL; + + convert_setup(&virp->vir_conv, p, p_enc); + } + } + return viminfo_readline(virp); +} + +/* + * Read a line from the viminfo file. + * Returns TRUE for end-of-file; + */ + int +viminfo_readline(vir_T *virp) +{ + return vim_fgets(virp->vir_line, LSIZE, virp->vir_fd); +} + +/* + * Check string read from viminfo file. + * Remove '\n' at the end of the line. + * - replace CTRL-V CTRL-V with CTRL-V + * - replace CTRL-V 'n' with '\n' + * + * Check for a long line as written by viminfo_writestring(). + * + * Return the string in allocated memory (NULL when out of memory). + */ + char_u * +viminfo_readstring( + vir_T *virp, + int off, /* offset for virp->vir_line */ + int convert UNUSED) /* convert the string */ +{ + char_u *retval; + char_u *s, *d; + long len; + + if (virp->vir_line[off] == Ctrl_V && vim_isdigit(virp->vir_line[off + 1])) + { + len = atol((char *)virp->vir_line + off + 1); + retval = lalloc(len, TRUE); + if (retval == NULL) + { + /* Line too long? File messed up? Skip next line. */ + (void)vim_fgets(virp->vir_line, 10, virp->vir_fd); + return NULL; + } + (void)vim_fgets(retval, (int)len, virp->vir_fd); + s = retval + 1; /* Skip the leading '<' */ + } + else + { + retval = vim_strsave(virp->vir_line + off); + if (retval == NULL) + return NULL; + s = retval; + } + + /* Change CTRL-V CTRL-V to CTRL-V and CTRL-V n to \n in-place. */ + d = retval; + while (*s != NUL && *s != '\n') + { + if (s[0] == Ctrl_V && s[1] != NUL) + { + if (s[1] == 'n') + *d++ = '\n'; + else + *d++ = Ctrl_V; + s += 2; + } + else + *d++ = *s++; + } + *d = NUL; + + if (convert && virp->vir_conv.vc_type != CONV_NONE && *retval != NUL) + { + d = string_convert(&virp->vir_conv, retval, NULL); + if (d != NULL) + { + vim_free(retval); + retval = d; + } + } + + return retval; +} + +/* + * write string to viminfo file + * - replace CTRL-V with CTRL-V CTRL-V + * - replace '\n' with CTRL-V 'n' + * - add a '\n' at the end + * + * For a long line: + * - write " CTRL-V <length> \n " in first line + * - write " < <string> \n " in second line + */ + void +viminfo_writestring(FILE *fd, char_u *p) +{ + int c; + char_u *s; + int len = 0; + + for (s = p; *s != NUL; ++s) + { + if (*s == Ctrl_V || *s == '\n') + ++len; + ++len; + } + + /* If the string will be too long, write its length and put it in the next + * line. Take into account that some room is needed for what comes before + * the string (e.g., variable name). Add something to the length for the + * '<', NL and trailing NUL. */ + if (len > LSIZE / 2) + fprintf(fd, IF_EB("\026%d\n<", CTRL_V_STR "%d\n<"), len + 3); + + while ((c = *p++) != NUL) + { + if (c == Ctrl_V || c == '\n') + { + putc(Ctrl_V, fd); + if (c == '\n') + c = 'n'; + } + putc(c, fd); + } + putc('\n', fd); +} + +/* + * Write a string in quotes that barline_parse() can read back. + * Breaks the line in less than LSIZE pieces when needed. + * Returns remaining characters in the line. + */ + int +barline_writestring(FILE *fd, char_u *s, int remaining_start) +{ + char_u *p; + int remaining = remaining_start; + int len = 2; + + /* Count the number of characters produced, including quotes. */ + for (p = s; *p != NUL; ++p) + { + if (*p == NL) + len += 2; + else if (*p == '"' || *p == '\\') + len += 2; + else + ++len; + } + if (len > remaining - 2) + { + fprintf(fd, ">%d\n|<", len); + remaining = LSIZE - 20; + } + + putc('"', fd); + for (p = s; *p != NUL; ++p) + { + if (*p == NL) + { + putc('\\', fd); + putc('n', fd); + --remaining; + } + else if (*p == '"' || *p == '\\') + { + putc('\\', fd); + putc(*p, fd); + --remaining; + } + else + putc(*p, fd); + --remaining; + + if (remaining < 3) + { + putc('\n', fd); + putc('|', fd); + putc('<', fd); + /* Leave enough space for another continuation. */ + remaining = LSIZE - 20; + } + } + putc('"', fd); + return remaining - 2; +} + +/* + * Parse a viminfo line starting with '|'. + * Add each decoded value to "values". + * Returns TRUE if the next line is to be read after using the parsed values. + */ + static int +barline_parse(vir_T *virp, char_u *text, garray_T *values) +{ + char_u *p = text; + char_u *nextp = NULL; + char_u *buf = NULL; + bval_T *value; + int i; + int allocated = FALSE; + int eof; + char_u *sconv; + int converted; + + while (*p == ',') + { + ++p; + if (ga_grow(values, 1) == FAIL) + break; + value = (bval_T *)(values->ga_data) + values->ga_len; + + if (*p == '>') + { + /* Need to read a continuation line. Put strings in allocated + * memory, because virp->vir_line is overwritten. */ + if (!allocated) + { + for (i = 0; i < values->ga_len; ++i) + { + bval_T *vp = (bval_T *)(values->ga_data) + i; + + if (vp->bv_type == BVAL_STRING && !vp->bv_allocated) + { + vp->bv_string = vim_strnsave(vp->bv_string, vp->bv_len); + vp->bv_allocated = TRUE; + } + } + allocated = TRUE; + } + + if (vim_isdigit(p[1])) + { + size_t len; + size_t todo; + size_t n; + + /* String value was split into lines that are each shorter + * than LSIZE: + * |{bartype},>{length of "{text}{text2}"} + * |<"{text1} + * |<{text2}",{value} + * Length includes the quotes. + */ + ++p; + len = getdigits(&p); + buf = alloc((int)(len + 1)); + if (buf == NULL) + return TRUE; + p = buf; + for (todo = len; todo > 0; todo -= n) + { + eof = viminfo_readline(virp); + if (eof || virp->vir_line[0] != '|' + || virp->vir_line[1] != '<') + { + /* File was truncated or garbled. Read another line if + * this one starts with '|'. */ + vim_free(buf); + return eof || virp->vir_line[0] == '|'; + } + /* Get length of text, excluding |< and NL chars. */ + n = STRLEN(virp->vir_line); + while (n > 0 && (virp->vir_line[n - 1] == NL + || virp->vir_line[n - 1] == CAR)) + --n; + n -= 2; + if (n > todo) + { + /* more values follow after the string */ + nextp = virp->vir_line + 2 + todo; + n = todo; + } + mch_memmove(p, virp->vir_line + 2, n); + p += n; + } + *p = NUL; + p = buf; + } + else + { + /* Line ending in ">" continues in the next line: + * |{bartype},{lots of values},> + * |<{value},{value} + */ + eof = viminfo_readline(virp); + if (eof || virp->vir_line[0] != '|' + || virp->vir_line[1] != '<') + /* File was truncated or garbled. Read another line if + * this one starts with '|'. */ + return eof || virp->vir_line[0] == '|'; + p = virp->vir_line + 2; + } + } + + if (isdigit(*p)) + { + value->bv_type = BVAL_NR; + value->bv_nr = getdigits(&p); + ++values->ga_len; + } + else if (*p == '"') + { + int len = 0; + char_u *s = p; + + /* Unescape special characters in-place. */ + ++p; + while (*p != '"') + { + if (*p == NL || *p == NUL) + return TRUE; /* syntax error, drop the value */ + if (*p == '\\') + { + ++p; + if (*p == 'n') + s[len++] = '\n'; + else + s[len++] = *p; + ++p; + } + else + s[len++] = *p++; + } + ++p; + s[len] = NUL; + + converted = FALSE; + if (virp->vir_conv.vc_type != CONV_NONE && *s != NUL) + { + sconv = string_convert(&virp->vir_conv, s, NULL); + if (sconv != NULL) + { + if (s == buf) + vim_free(s); + s = sconv; + buf = s; + converted = TRUE; + } + } + + /* Need to copy in allocated memory if the string wasn't allocated + * above and we did allocate before, thus vir_line may change. */ + if (s != buf && allocated) + s = vim_strsave(s); + value->bv_string = s; + value->bv_type = BVAL_STRING; + value->bv_len = len; + value->bv_allocated = allocated || converted; + ++values->ga_len; + if (nextp != NULL) + { + /* values following a long string */ + p = nextp; + nextp = NULL; + } + } + else if (*p == ',') + { + value->bv_type = BVAL_EMPTY; + ++values->ga_len; + } + else + break; + } + return TRUE; +} + + static int +read_viminfo_barline(vir_T *virp, int got_encoding, int force, int writing) +{ + char_u *p = virp->vir_line + 1; + int bartype; + garray_T values; + bval_T *vp; + int i; + int read_next = TRUE; + + /* The format is: |{bartype},{value},... + * For a very long string: + * |{bartype},>{length of "{text}{text2}"} + * |<{text1} + * |<{text2},{value} + * For a long line not using a string + * |{bartype},{lots of values},> + * |<{value},{value} + */ + if (*p == '<') + { + /* Continuation line of an unrecognized item. */ + if (writing) + ga_add_string(&virp->vir_barlines, virp->vir_line); + } + else + { + ga_init2(&values, sizeof(bval_T), 20); + bartype = getdigits(&p); + switch (bartype) + { + case BARTYPE_VERSION: + /* Only use the version when it comes before the encoding. + * If it comes later it was copied by a Vim version that + * doesn't understand the version. */ + if (!got_encoding) + { + read_next = barline_parse(virp, p, &values); + vp = (bval_T *)values.ga_data; + if (values.ga_len > 0 && vp->bv_type == BVAL_NR) + virp->vir_version = vp->bv_nr; + } + break; + + case BARTYPE_HISTORY: + read_next = barline_parse(virp, p, &values); + handle_viminfo_history(&values, writing); + break; + + case BARTYPE_REGISTER: + read_next = barline_parse(virp, p, &values); + handle_viminfo_register(&values, force); + break; + + case BARTYPE_MARK: + read_next = barline_parse(virp, p, &values); + handle_viminfo_mark(&values, force); + break; + + default: + /* copy unrecognized line (for future use) */ + if (writing) + ga_add_string(&virp->vir_barlines, virp->vir_line); + } + for (i = 0; i < values.ga_len; ++i) + { + vp = (bval_T *)values.ga_data + i; + if (vp->bv_type == BVAL_STRING && vp->bv_allocated) + vim_free(vp->bv_string); + } + ga_clear(&values); + } + + if (read_next) + return viminfo_readline(virp); + return FALSE; +} + + static void +write_viminfo_version(FILE *fp_out) +{ + fprintf(fp_out, "# Viminfo version\n|%d,%d\n\n", + BARTYPE_VERSION, VIMINFO_VERSION); +} + + static void +write_viminfo_barlines(vir_T *virp, FILE *fp_out) +{ + int i; + garray_T *gap = &virp->vir_barlines; + int seen_useful = FALSE; + char *line; + + if (gap->ga_len > 0) + { + fputs(_("\n# Bar lines, copied verbatim:\n"), fp_out); + + /* Skip over continuation lines until seeing a useful line. */ + for (i = 0; i < gap->ga_len; ++i) + { + line = ((char **)(gap->ga_data))[i]; + if (seen_useful || line[1] != '<') + { + fputs(line, fp_out); + seen_useful = TRUE; + } + } + } +} +#endif /* FEAT_VIMINFO */ + +/* + * Return the current time in seconds. Calls time(), unless test_settime() + * was used. + */ + time_T +vim_time(void) +{ +# ifdef FEAT_EVAL + return time_for_testing == 0 ? time(NULL) : time_for_testing; +# else + return time(NULL); +# endif +} + +/* + * Implementation of ":fixdel", also used by get_stty(). + * <BS> resulting <Del> + * ^? ^H + * not ^? ^? + */ + void +do_fixdel(exarg_T *eap UNUSED) +{ + char_u *p; + + p = find_termcode((char_u *)"kb"); + add_termcode((char_u *)"kD", p != NULL + && *p == DEL ? (char_u *)CTRL_H_STR : DEL_STR, FALSE); +} + + void +print_line_no_prefix( + linenr_T lnum, + int use_number, + int list) +{ + char numbuf[30]; + + if (curwin->w_p_nu || use_number) + { + vim_snprintf(numbuf, sizeof(numbuf), + "%*ld ", number_width(curwin), (long)lnum); + msg_puts_attr(numbuf, HL_ATTR(HLF_N)); /* Highlight line nrs */ + } + msg_prt_line(ml_get(lnum), list); +} + +/* + * Print a text line. Also in silent mode ("ex -s"). + */ + void +print_line(linenr_T lnum, int use_number, int list) +{ + int save_silent = silent_mode; + + /* apply :filter /pat/ */ + if (message_filtered(ml_get(lnum))) + return; + + msg_start(); + silent_mode = FALSE; + info_message = TRUE; /* use mch_msg(), not mch_errmsg() */ + print_line_no_prefix(lnum, use_number, list); + if (save_silent) + { + msg_putchar('\n'); + cursor_on(); /* msg_start() switches it off */ + out_flush(); + silent_mode = save_silent; + } + info_message = FALSE; +} + + int +rename_buffer(char_u *new_fname) +{ + char_u *fname, *sfname, *xfname; + buf_T *buf; + + buf = curbuf; + apply_autocmds(EVENT_BUFFILEPRE, NULL, NULL, FALSE, curbuf); + /* buffer changed, don't change name now */ + if (buf != curbuf) + return FAIL; +#ifdef FEAT_EVAL + if (aborting()) /* autocmds may abort script processing */ + return FAIL; +#endif + /* + * The name of the current buffer will be changed. + * A new (unlisted) buffer entry needs to be made to hold the old file + * name, which will become the alternate file name. + * But don't set the alternate file name if the buffer didn't have a + * name. + */ + fname = curbuf->b_ffname; + sfname = curbuf->b_sfname; + xfname = curbuf->b_fname; + curbuf->b_ffname = NULL; + curbuf->b_sfname = NULL; + if (setfname(curbuf, new_fname, NULL, TRUE) == FAIL) + { + curbuf->b_ffname = fname; + curbuf->b_sfname = sfname; + return FAIL; + } + curbuf->b_flags |= BF_NOTEDITED; + if (xfname != NULL && *xfname != NUL) + { + buf = buflist_new(fname, xfname, curwin->w_cursor.lnum, 0); + if (buf != NULL && !cmdmod.keepalt) + curwin->w_alt_fnum = buf->b_fnum; + } + vim_free(fname); + vim_free(sfname); + apply_autocmds(EVENT_BUFFILEPOST, NULL, NULL, FALSE, curbuf); + + /* Change directories when the 'acd' option is set. */ + DO_AUTOCHDIR; + return OK; +} + +/* + * ":file[!] [fname]". + */ + void +ex_file(exarg_T *eap) +{ + /* ":0file" removes the file name. Check for illegal uses ":3file", + * "0file name", etc. */ + if (eap->addr_count > 0 + && (*eap->arg != NUL + || eap->line2 > 0 + || eap->addr_count > 1)) + { + emsg(_(e_invarg)); + return; + } + + if (*eap->arg != NUL || eap->addr_count == 1) + { + if (rename_buffer(eap->arg) == FAIL) + return; + redraw_tabline = TRUE; + } + + // print file name if no argument or 'F' is not in 'shortmess' + if (*eap->arg == NUL || !shortmess(SHM_FILEINFO)) + fileinfo(FALSE, FALSE, eap->forceit); +} + +/* + * ":update". + */ + void +ex_update(exarg_T *eap) +{ + if (curbufIsChanged()) + (void)do_write(eap); +} + +/* + * ":write" and ":saveas". + */ + void +ex_write(exarg_T *eap) +{ + if (eap->usefilter) /* input lines to shell command */ + do_bang(1, eap, FALSE, TRUE, FALSE); + else + (void)do_write(eap); +} + +/* + * write current buffer to file 'eap->arg' + * if 'eap->append' is TRUE, append to the file + * + * if *eap->arg == NUL write to current file + * + * return FAIL for failure, OK otherwise + */ + int +do_write(exarg_T *eap) +{ + int other; + char_u *fname = NULL; /* init to shut up gcc */ + char_u *ffname; + int retval = FAIL; + char_u *free_fname = NULL; +#ifdef FEAT_BROWSE + char_u *browse_file = NULL; +#endif + buf_T *alt_buf = NULL; + int name_was_missing; + + if (not_writing()) /* check 'write' option */ + return FAIL; + + ffname = eap->arg; +#ifdef FEAT_BROWSE + if (cmdmod.browse) + { + browse_file = do_browse(BROWSE_SAVE, (char_u *)_("Save As"), ffname, + NULL, NULL, NULL, curbuf); + if (browse_file == NULL) + goto theend; + ffname = browse_file; + } +#endif + if (*ffname == NUL) + { + if (eap->cmdidx == CMD_saveas) + { + emsg(_(e_argreq)); + goto theend; + } + other = FALSE; + } + else + { + fname = ffname; + free_fname = fix_fname(ffname); + /* + * When out-of-memory, keep unexpanded file name, because we MUST be + * able to write the file in this situation. + */ + if (free_fname != NULL) + ffname = free_fname; + other = otherfile(ffname); + } + + /* + * If we have a new file, put its name in the list of alternate file names. + */ + if (other) + { + if (vim_strchr(p_cpo, CPO_ALTWRITE) != NULL + || eap->cmdidx == CMD_saveas) + alt_buf = setaltfname(ffname, fname, (linenr_T)1); + else + alt_buf = buflist_findname(ffname); + if (alt_buf != NULL && alt_buf->b_ml.ml_mfp != NULL) + { + /* Overwriting a file that is loaded in another buffer is not a + * good idea. */ + emsg(_(e_bufloaded)); + goto theend; + } + } + + /* + * Writing to the current file is not allowed in readonly mode + * and a file name is required. + * "nofile" and "nowrite" buffers cannot be written implicitly either. + */ + if (!other && ( +#ifdef FEAT_QUICKFIX + bt_dontwrite_msg(curbuf) || +#endif + check_fname() == FAIL || check_readonly(&eap->forceit, curbuf))) + goto theend; + + if (!other) + { + ffname = curbuf->b_ffname; + fname = curbuf->b_fname; + /* + * Not writing the whole file is only allowed with '!'. + */ + if ( (eap->line1 != 1 + || eap->line2 != curbuf->b_ml.ml_line_count) + && !eap->forceit + && !eap->append + && !p_wa) + { +#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) + if (p_confirm || cmdmod.confirm) + { + if (vim_dialog_yesno(VIM_QUESTION, NULL, + (char_u *)_("Write partial file?"), 2) != VIM_YES) + goto theend; + eap->forceit = TRUE; + } + else +#endif + { + emsg(_("E140: Use ! to write partial buffer")); + goto theend; + } + } + } + + if (check_overwrite(eap, curbuf, fname, ffname, other) == OK) + { + if (eap->cmdidx == CMD_saveas && alt_buf != NULL) + { + buf_T *was_curbuf = curbuf; + + apply_autocmds(EVENT_BUFFILEPRE, NULL, NULL, FALSE, curbuf); + apply_autocmds(EVENT_BUFFILEPRE, NULL, NULL, FALSE, alt_buf); +#ifdef FEAT_EVAL + if (curbuf != was_curbuf || aborting()) +#else + if (curbuf != was_curbuf) +#endif + { + /* buffer changed, don't change name now */ + retval = FAIL; + goto theend; + } + /* Exchange the file names for the current and the alternate + * buffer. This makes it look like we are now editing the buffer + * under the new name. Must be done before buf_write(), because + * if there is no file name and 'cpo' contains 'F', it will set + * the file name. */ + fname = alt_buf->b_fname; + alt_buf->b_fname = curbuf->b_fname; + curbuf->b_fname = fname; + fname = alt_buf->b_ffname; + alt_buf->b_ffname = curbuf->b_ffname; + curbuf->b_ffname = fname; + fname = alt_buf->b_sfname; + alt_buf->b_sfname = curbuf->b_sfname; + curbuf->b_sfname = fname; + buf_name_changed(curbuf); + + apply_autocmds(EVENT_BUFFILEPOST, NULL, NULL, FALSE, curbuf); + apply_autocmds(EVENT_BUFFILEPOST, NULL, NULL, FALSE, alt_buf); + if (!alt_buf->b_p_bl) + { + alt_buf->b_p_bl = TRUE; + apply_autocmds(EVENT_BUFADD, NULL, NULL, FALSE, alt_buf); + } +#ifdef FEAT_EVAL + if (curbuf != was_curbuf || aborting()) +#else + if (curbuf != was_curbuf) +#endif + { + /* buffer changed, don't write the file */ + retval = FAIL; + goto theend; + } + + /* If 'filetype' was empty try detecting it now. */ + if (*curbuf->b_p_ft == NUL) + { + if (au_has_group((char_u *)"filetypedetect")) + (void)do_doautocmd((char_u *)"filetypedetect BufRead", + TRUE, NULL); + do_modelines(0); + } + + /* Autocommands may have changed buffer names, esp. when + * 'autochdir' is set. */ + fname = curbuf->b_sfname; + } + + name_was_missing = curbuf->b_ffname == NULL; + + retval = buf_write(curbuf, ffname, fname, eap->line1, eap->line2, + eap, eap->append, eap->forceit, TRUE, FALSE); + + /* After ":saveas fname" reset 'readonly'. */ + if (eap->cmdidx == CMD_saveas) + { + if (retval == OK) + { + curbuf->b_p_ro = FALSE; + redraw_tabline = TRUE; + } + } + + /* Change directories when the 'acd' option is set and the file name + * got changed or set. */ + if (eap->cmdidx == CMD_saveas || name_was_missing) + { + DO_AUTOCHDIR; + } + } + +theend: +#ifdef FEAT_BROWSE + vim_free(browse_file); +#endif + vim_free(free_fname); + return retval; +} + +/* + * Check if it is allowed to overwrite a file. If b_flags has BF_NOTEDITED, + * BF_NEW or BF_READERR, check for overwriting current file. + * May set eap->forceit if a dialog says it's OK to overwrite. + * Return OK if it's OK, FAIL if it is not. + */ + int +check_overwrite( + exarg_T *eap, + buf_T *buf, + char_u *fname, /* file name to be used (can differ from + buf->ffname) */ + char_u *ffname, /* full path version of fname */ + int other) /* writing under other name */ +{ + /* + * write to other file or b_flags set or not writing the whole file: + * overwriting only allowed with '!' + */ + if ( (other + || (buf->b_flags & BF_NOTEDITED) + || ((buf->b_flags & BF_NEW) + && vim_strchr(p_cpo, CPO_OVERNEW) == NULL) + || (buf->b_flags & BF_READERR)) + && !p_wa +#ifdef FEAT_QUICKFIX + && !bt_nofile(buf) +#endif + && vim_fexists(ffname)) + { + if (!eap->forceit && !eap->append) + { +#ifdef UNIX + /* with UNIX it is possible to open a directory */ + if (mch_isdir(ffname)) + { + semsg(_(e_isadir2), ffname); + return FAIL; + } +#endif +#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) + if (p_confirm || cmdmod.confirm) + { + char_u buff[DIALOG_MSG_SIZE]; + + dialog_msg(buff, _("Overwrite existing file \"%s\"?"), fname); + if (vim_dialog_yesno(VIM_QUESTION, NULL, buff, 2) != VIM_YES) + return FAIL; + eap->forceit = TRUE; + } + else +#endif + { + emsg(_(e_exists)); + return FAIL; + } + } + + /* For ":w! filename" check that no swap file exists for "filename". */ + if (other && !emsg_silent) + { + char_u *dir; + char_u *p; + int r; + char_u *swapname; + + /* We only try the first entry in 'directory', without checking if + * it's writable. If the "." directory is not writable the write + * will probably fail anyway. + * Use 'shortname' of the current buffer, since there is no buffer + * for the written file. */ + if (*p_dir == NUL) + { + dir = alloc(5); + if (dir == NULL) + return FAIL; + STRCPY(dir, "."); + } + else + { + dir = alloc(MAXPATHL); + if (dir == NULL) + return FAIL; + p = p_dir; + copy_option_part(&p, dir, MAXPATHL, ","); + } + swapname = makeswapname(fname, ffname, curbuf, dir); + vim_free(dir); + r = vim_fexists(swapname); + if (r) + { +#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) + if (p_confirm || cmdmod.confirm) + { + char_u buff[DIALOG_MSG_SIZE]; + + dialog_msg(buff, + _("Swap file \"%s\" exists, overwrite anyway?"), + swapname); + if (vim_dialog_yesno(VIM_QUESTION, NULL, buff, 2) + != VIM_YES) + { + vim_free(swapname); + return FAIL; + } + eap->forceit = TRUE; + } + else +#endif + { + semsg(_("E768: Swap file exists: %s (:silent! overrides)"), + swapname); + vim_free(swapname); + return FAIL; + } + } + vim_free(swapname); + } + } + return OK; +} + +/* + * Handle ":wnext", ":wNext" and ":wprevious" commands. + */ + void +ex_wnext(exarg_T *eap) +{ + int i; + + if (eap->cmd[1] == 'n') + i = curwin->w_arg_idx + (int)eap->line2; + else + i = curwin->w_arg_idx - (int)eap->line2; + eap->line1 = 1; + eap->line2 = curbuf->b_ml.ml_line_count; + if (do_write(eap) != FAIL) + do_argfile(eap, i); +} + +/* + * ":wall", ":wqall" and ":xall": Write all changed files (and exit). + */ + void +do_wqall(exarg_T *eap) +{ + buf_T *buf; + int error = 0; + int save_forceit = eap->forceit; + + if (eap->cmdidx == CMD_xall || eap->cmdidx == CMD_wqall) + exiting = TRUE; + + FOR_ALL_BUFFERS(buf) + { +#ifdef FEAT_TERMINAL + if (exiting && term_job_running(buf->b_term)) + { + no_write_message_nobang(buf); + ++error; + } + else +#endif + if (bufIsChanged(buf) && !bt_dontwrite(buf)) + { + /* + * Check if there is a reason the buffer cannot be written: + * 1. if the 'write' option is set + * 2. if there is no file name (even after browsing) + * 3. if the 'readonly' is set (even after a dialog) + * 4. if overwriting is allowed (even after a dialog) + */ + if (not_writing()) + { + ++error; + break; + } +#ifdef FEAT_BROWSE + /* ":browse wall": ask for file name if there isn't one */ + if (buf->b_ffname == NULL && cmdmod.browse) + browse_save_fname(buf); +#endif + if (buf->b_ffname == NULL) + { + semsg(_("E141: No file name for buffer %ld"), (long)buf->b_fnum); + ++error; + } + else if (check_readonly(&eap->forceit, buf) + || check_overwrite(eap, buf, buf->b_fname, buf->b_ffname, + FALSE) == FAIL) + { + ++error; + } + else + { + bufref_T bufref; + + set_bufref(&bufref, buf); + if (buf_write_all(buf, eap->forceit) == FAIL) + ++error; + /* an autocommand may have deleted the buffer */ + if (!bufref_valid(&bufref)) + buf = firstbuf; + } + eap->forceit = save_forceit; /* check_overwrite() may set it */ + } + } + if (exiting) + { + if (!error) + getout(0); /* exit Vim */ + not_exiting(); + } +} + +/* + * Check the 'write' option. + * Return TRUE and give a message when it's not st. + */ + int +not_writing(void) +{ + if (p_write) + return FALSE; + emsg(_("E142: File not written: Writing is disabled by 'write' option")); + return TRUE; +} + +/* + * Check if a buffer is read-only (either 'readonly' option is set or file is + * read-only). Ask for overruling in a dialog. Return TRUE and give an error + * message when the buffer is readonly. + */ + static int +check_readonly(int *forceit, buf_T *buf) +{ + stat_T st; + + /* Handle a file being readonly when the 'readonly' option is set or when + * the file exists and permissions are read-only. + * We will send 0777 to check_file_readonly(), as the "perm" variable is + * important for device checks but not here. */ + if (!*forceit && (buf->b_p_ro + || (mch_stat((char *)buf->b_ffname, &st) >= 0 + && check_file_readonly(buf->b_ffname, 0777)))) + { +#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) + if ((p_confirm || cmdmod.confirm) && buf->b_fname != NULL) + { + char_u buff[DIALOG_MSG_SIZE]; + + if (buf->b_p_ro) + dialog_msg(buff, _("'readonly' option is set for \"%s\".\nDo you wish to write anyway?"), + buf->b_fname); + else + dialog_msg(buff, _("File permissions of \"%s\" are read-only.\nIt may still be possible to write it.\nDo you wish to try?"), + buf->b_fname); + + if (vim_dialog_yesno(VIM_QUESTION, NULL, buff, 2) == VIM_YES) + { + /* Set forceit, to force the writing of a readonly file */ + *forceit = TRUE; + return FALSE; + } + else + return TRUE; + } + else +#endif + if (buf->b_p_ro) + emsg(_(e_readonly)); + else + semsg(_("E505: \"%s\" is read-only (add ! to override)"), + buf->b_fname); + return TRUE; + } + + return FALSE; +} + +/* + * Try to abandon the current file and edit a new or existing file. + * "fnum" is the number of the file, if zero use "ffname_arg"/"sfname_arg". + * "lnum" is the line number for the cursor in the new file (if non-zero). + * + * Return: + * GETFILE_ERROR for "normal" error, + * GETFILE_NOT_WRITTEN for "not written" error, + * GETFILE_SAME_FILE for success + * GETFILE_OPEN_OTHER for successfully opening another file. + */ + int +getfile( + int fnum, + char_u *ffname_arg, + char_u *sfname_arg, + int setpm, + linenr_T lnum, + int forceit) +{ + char_u *ffname = ffname_arg; + char_u *sfname = sfname_arg; + int other; + int retval; + char_u *free_me = NULL; + + if (text_locked()) + return GETFILE_ERROR; + if (curbuf_locked()) + return GETFILE_ERROR; + + if (fnum == 0) + { + /* make ffname full path, set sfname */ + fname_expand(curbuf, &ffname, &sfname); + other = otherfile(ffname); + free_me = ffname; /* has been allocated, free() later */ + } + else + other = (fnum != curbuf->b_fnum); + + if (other) + ++no_wait_return; /* don't wait for autowrite message */ + if (other && !forceit && curbuf->b_nwindows == 1 && !buf_hide(curbuf) + && curbufIsChanged() && autowrite(curbuf, forceit) == FAIL) + { +#if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) + if (p_confirm && p_write) + dialog_changed(curbuf, FALSE); + if (curbufIsChanged()) +#endif + { + if (other) + --no_wait_return; + no_write_message(); + retval = GETFILE_NOT_WRITTEN; /* file has been changed */ + goto theend; + } + } + if (other) + --no_wait_return; + if (setpm) + setpcmark(); + if (!other) + { + if (lnum != 0) + curwin->w_cursor.lnum = lnum; + check_cursor_lnum(); + beginline(BL_SOL | BL_FIX); + retval = GETFILE_SAME_FILE; /* it's in the same file */ + } + else if (do_ecmd(fnum, ffname, sfname, NULL, lnum, + (buf_hide(curbuf) ? ECMD_HIDE : 0) + (forceit ? ECMD_FORCEIT : 0), + curwin) == OK) + retval = GETFILE_OPEN_OTHER; /* opened another file */ + else + retval = GETFILE_ERROR; /* error encountered */ + +theend: + vim_free(free_me); + return retval; +} + +/* + * start editing a new file + * + * fnum: file number; if zero use ffname/sfname + * ffname: the file name + * - full path if sfname used, + * - any file name if sfname is NULL + * - empty string to re-edit with the same file name (but may be + * in a different directory) + * - NULL to start an empty buffer + * sfname: the short file name (or NULL) + * eap: contains the command to be executed after loading the file and + * forced 'ff' and 'fenc' + * newlnum: if > 0: put cursor on this line number (if possible) + * if ECMD_LASTL: use last position in loaded file + * if ECMD_LAST: use last position in all files + * if ECMD_ONE: use first line + * flags: + * ECMD_HIDE: if TRUE don't free the current buffer + * ECMD_SET_HELP: set b_help flag of (new) buffer before opening file + * ECMD_OLDBUF: use existing buffer if it exists + * ECMD_FORCEIT: ! used for Ex command + * ECMD_ADDBUF: don't edit, just add to buffer list + * oldwin: Should be "curwin" when editing a new buffer in the current + * window, NULL when splitting the window first. When not NULL info + * of the previous buffer for "oldwin" is stored. + * + * return FAIL for failure, OK otherwise + */ + int +do_ecmd( + int fnum, + char_u *ffname, + char_u *sfname, + exarg_T *eap, /* can be NULL! */ + linenr_T newlnum, + int flags, + win_T *oldwin) +{ + int other_file; /* TRUE if editing another file */ + int oldbuf; /* TRUE if using existing buffer */ + int auto_buf = FALSE; /* TRUE if autocommands brought us + into the buffer unexpectedly */ + char_u *new_name = NULL; +#if defined(FEAT_EVAL) + int did_set_swapcommand = FALSE; +#endif + buf_T *buf; + bufref_T bufref; + bufref_T old_curbuf; + char_u *free_fname = NULL; +#ifdef FEAT_BROWSE + char_u *browse_file = NULL; +#endif + int retval = FAIL; + long n; + pos_T orig_pos; + linenr_T topline = 0; + int newcol = -1; + int solcol = -1; + pos_T *pos; + char_u *command = NULL; +#ifdef FEAT_SPELL + int did_get_winopts = FALSE; +#endif + int readfile_flags = 0; + int did_inc_redrawing_disabled = FALSE; + long *so_ptr = curwin->w_p_so >= 0 ? &curwin->w_p_so : &p_so; + + if (eap != NULL) + command = eap->do_ecmd_cmd; + set_bufref(&old_curbuf, curbuf); + + if (fnum != 0) + { + if (fnum == curbuf->b_fnum) /* file is already being edited */ + return OK; /* nothing to do */ + other_file = TRUE; + } + else + { +#ifdef FEAT_BROWSE + if (cmdmod.browse) + { + if ( +# ifdef FEAT_GUI + !gui.in_use && +# endif + au_has_group((char_u *)"FileExplorer")) + { + /* No browsing supported but we do have the file explorer: + * Edit the directory. */ + if (ffname == NULL || !mch_isdir(ffname)) + ffname = (char_u *)"."; + } + else + { + browse_file = do_browse(0, (char_u *)_("Edit File"), ffname, + NULL, NULL, NULL, curbuf); + if (browse_file == NULL) + goto theend; + ffname = browse_file; + } + } +#endif + /* if no short name given, use ffname for short name */ + if (sfname == NULL) + sfname = ffname; +#ifdef USE_FNAME_CASE +# ifdef USE_LONG_FNAME + if (USE_LONG_FNAME) +# endif + if (sfname != NULL) + fname_case(sfname, 0); /* set correct case for sfname */ +#endif + + if ((flags & ECMD_ADDBUF) && (ffname == NULL || *ffname == NUL)) + goto theend; + + if (ffname == NULL) + other_file = TRUE; + /* there is no file name */ + else if (*ffname == NUL && curbuf->b_ffname == NULL) + other_file = FALSE; + else + { + if (*ffname == NUL) /* re-edit with same file name */ + { + ffname = curbuf->b_ffname; + sfname = curbuf->b_fname; + } + free_fname = fix_fname(ffname); /* may expand to full path name */ + if (free_fname != NULL) + ffname = free_fname; + other_file = otherfile(ffname); + } + } + + /* + * if the file was changed we may not be allowed to abandon it + * - if we are going to re-edit the same file + * - or if we are the only window on this file and if ECMD_HIDE is FALSE + */ + if ( ((!other_file && !(flags & ECMD_OLDBUF)) + || (curbuf->b_nwindows == 1 + && !(flags & (ECMD_HIDE | ECMD_ADDBUF)))) + && check_changed(curbuf, (p_awa ? CCGD_AW : 0) + | (other_file ? 0 : CCGD_MULTWIN) + | ((flags & ECMD_FORCEIT) ? CCGD_FORCEIT : 0) + | (eap == NULL ? 0 : CCGD_EXCMD))) + { + if (fnum == 0 && other_file && ffname != NULL) + (void)setaltfname(ffname, sfname, newlnum < 0 ? 0 : newlnum); + goto theend; + } + + /* + * End Visual mode before switching to another buffer, so the text can be + * copied into the GUI selection buffer. + */ + reset_VIsual(); + +#if defined(FEAT_EVAL) + if ((command != NULL || newlnum > (linenr_T)0) + && *get_vim_var_str(VV_SWAPCOMMAND) == NUL) + { + int len; + char_u *p; + + /* Set v:swapcommand for the SwapExists autocommands. */ + if (command != NULL) + len = (int)STRLEN(command) + 3; + else + len = 30; + p = alloc((unsigned)len); + if (p != NULL) + { + if (command != NULL) + vim_snprintf((char *)p, len, ":%s\r", command); + else + vim_snprintf((char *)p, len, "%ldG", (long)newlnum); + set_vim_var_string(VV_SWAPCOMMAND, p, -1); + did_set_swapcommand = TRUE; + vim_free(p); + } + } +#endif + + /* + * If we are starting to edit another file, open a (new) buffer. + * Otherwise we re-use the current buffer. + */ + if (other_file) + { + if (!(flags & ECMD_ADDBUF)) + { + if (!cmdmod.keepalt) + curwin->w_alt_fnum = curbuf->b_fnum; + if (oldwin != NULL) + buflist_altfpos(oldwin); + } + + if (fnum) + buf = buflist_findnr(fnum); + else + { + if (flags & ECMD_ADDBUF) + { + linenr_T tlnum = 1L; + + if (command != NULL) + { + tlnum = atol((char *)command); + if (tlnum <= 0) + tlnum = 1L; + } + (void)buflist_new(ffname, sfname, tlnum, BLN_LISTED); + goto theend; + } + buf = buflist_new(ffname, sfname, 0L, + BLN_CURBUF | ((flags & ECMD_SET_HELP) ? 0 : BLN_LISTED)); + + /* autocommands may change curwin and curbuf */ + if (oldwin != NULL) + oldwin = curwin; + set_bufref(&old_curbuf, curbuf); + } + if (buf == NULL) + goto theend; + if (buf->b_ml.ml_mfp == NULL) /* no memfile yet */ + { + oldbuf = FALSE; + } + else /* existing memfile */ + { + oldbuf = TRUE; + set_bufref(&bufref, buf); + (void)buf_check_timestamp(buf, FALSE); + /* Check if autocommands made the buffer invalid or changed the + * current buffer. */ + if (!bufref_valid(&bufref) || curbuf != old_curbuf.br_buf) + goto theend; +#ifdef FEAT_EVAL + if (aborting()) /* autocmds may abort script processing */ + goto theend; +#endif + } + + /* May jump to last used line number for a loaded buffer or when asked + * for explicitly */ + if ((oldbuf && newlnum == ECMD_LASTL) || newlnum == ECMD_LAST) + { + pos = buflist_findfpos(buf); + newlnum = pos->lnum; + solcol = pos->col; + } + + /* + * Make the (new) buffer the one used by the current window. + * If the old buffer becomes unused, free it if ECMD_HIDE is FALSE. + * If the current buffer was empty and has no file name, curbuf + * is returned by buflist_new(), nothing to do here. + */ + if (buf != curbuf) + { + /* + * Be careful: The autocommands may delete any buffer and change + * the current buffer. + * - If the buffer we are going to edit is deleted, give up. + * - If the current buffer is deleted, prefer to load the new + * buffer when loading a buffer is required. This avoids + * loading another buffer which then must be closed again. + * - If we ended up in the new buffer already, need to skip a few + * things, set auto_buf. + */ + if (buf->b_fname != NULL) + new_name = vim_strsave(buf->b_fname); + set_bufref(&au_new_curbuf, buf); + apply_autocmds(EVENT_BUFLEAVE, NULL, NULL, FALSE, curbuf); + if (!bufref_valid(&au_new_curbuf)) + { + /* new buffer has been deleted */ + delbuf_msg(new_name); /* frees new_name */ + goto theend; + } +#ifdef FEAT_EVAL + if (aborting()) /* autocmds may abort script processing */ + { + vim_free(new_name); + goto theend; + } +#endif + if (buf == curbuf) /* already in new buffer */ + auto_buf = TRUE; + else + { + win_T *the_curwin = curwin; + + /* Set the w_closing flag to avoid that autocommands close the + * window. And set b_locked for the same reason. */ + the_curwin->w_closing = TRUE; + ++buf->b_locked; + + if (curbuf == old_curbuf.br_buf) + buf_copy_options(buf, BCO_ENTER); + + /* Close the link to the current buffer. This will set + * oldwin->w_buffer to NULL. */ + u_sync(FALSE); + close_buffer(oldwin, curbuf, + (flags & ECMD_HIDE) ? 0 : DOBUF_UNLOAD, FALSE); + + the_curwin->w_closing = FALSE; + --buf->b_locked; + +#ifdef FEAT_EVAL + /* autocmds may abort script processing */ + if (aborting() && curwin->w_buffer != NULL) + { + vim_free(new_name); + goto theend; + } +#endif + /* Be careful again, like above. */ + if (!bufref_valid(&au_new_curbuf)) + { + /* new buffer has been deleted */ + delbuf_msg(new_name); /* frees new_name */ + goto theend; + } + if (buf == curbuf) /* already in new buffer */ + auto_buf = TRUE; + else + { +#ifdef FEAT_SYN_HL + /* + * <VN> We could instead free the synblock + * and re-attach to buffer, perhaps. + */ + if (curwin->w_buffer == NULL + || curwin->w_s == &(curwin->w_buffer->b_s)) + curwin->w_s = &(buf->b_s); +#endif + curwin->w_buffer = buf; + curbuf = buf; + ++curbuf->b_nwindows; + + /* Set 'fileformat', 'binary' and 'fenc' when forced. */ + if (!oldbuf && eap != NULL) + { + set_file_options(TRUE, eap); + set_forced_fenc(eap); + } + } + + /* May get the window options from the last time this buffer + * was in this window (or another window). If not used + * before, reset the local window options to the global + * values. Also restores old folding stuff. */ + get_winopts(curbuf); +#ifdef FEAT_SPELL + did_get_winopts = TRUE; +#endif + } + vim_free(new_name); + au_new_curbuf.br_buf = NULL; + au_new_curbuf.br_buf_free_count = 0; + } + + curwin->w_pcmark.lnum = 1; + curwin->w_pcmark.col = 0; + } + else /* !other_file */ + { + if ((flags & ECMD_ADDBUF) || check_fname() == FAIL) + goto theend; + + oldbuf = (flags & ECMD_OLDBUF); + } + + /* Don't redraw until the cursor is in the right line, otherwise + * autocommands may cause ml_get errors. */ + ++RedrawingDisabled; + did_inc_redrawing_disabled = TRUE; + + buf = curbuf; + if ((flags & ECMD_SET_HELP) || keep_help_flag) + { + prepare_help_buffer(); + } + else + { + /* Don't make a buffer listed if it's a help buffer. Useful when + * using CTRL-O to go back to a help file. */ + if (!curbuf->b_help) + set_buflisted(TRUE); + } + + /* If autocommands change buffers under our fingers, forget about + * editing the file. */ + if (buf != curbuf) + goto theend; +#ifdef FEAT_EVAL + if (aborting()) /* autocmds may abort script processing */ + goto theend; +#endif + + /* Since we are starting to edit a file, consider the filetype to be + * unset. Helps for when an autocommand changes files and expects syntax + * highlighting to work in the other file. */ + did_filetype = FALSE; + +/* + * other_file oldbuf + * FALSE FALSE re-edit same file, buffer is re-used + * FALSE TRUE re-edit same file, nothing changes + * TRUE FALSE start editing new file, new buffer + * TRUE TRUE start editing in existing buffer (nothing to do) + */ + if (!other_file && !oldbuf) /* re-use the buffer */ + { + set_last_cursor(curwin); /* may set b_last_cursor */ + if (newlnum == ECMD_LAST || newlnum == ECMD_LASTL) + { + newlnum = curwin->w_cursor.lnum; + solcol = curwin->w_cursor.col; + } + buf = curbuf; + if (buf->b_fname != NULL) + new_name = vim_strsave(buf->b_fname); + else + new_name = NULL; + set_bufref(&bufref, buf); + + if (p_ur < 0 || curbuf->b_ml.ml_line_count <= p_ur) + { + /* Save all the text, so that the reload can be undone. + * Sync first so that this is a separate undo-able action. */ + u_sync(FALSE); + if (u_savecommon(0, curbuf->b_ml.ml_line_count + 1, 0, TRUE) + == FAIL) + { + vim_free(new_name); + goto theend; + } + u_unchanged(curbuf); + buf_freeall(curbuf, BFA_KEEP_UNDO); + + /* tell readfile() not to clear or reload undo info */ + readfile_flags = READ_KEEP_UNDO; + } + else + buf_freeall(curbuf, 0); /* free all things for buffer */ + + /* If autocommands deleted the buffer we were going to re-edit, give + * up and jump to the end. */ + if (!bufref_valid(&bufref)) + { + delbuf_msg(new_name); /* frees new_name */ + goto theend; + } + vim_free(new_name); + + /* If autocommands change buffers under our fingers, forget about + * re-editing the file. Should do the buf_clear_file(), but perhaps + * the autocommands changed the buffer... */ + if (buf != curbuf) + goto theend; +#ifdef FEAT_EVAL + if (aborting()) /* autocmds may abort script processing */ + goto theend; +#endif + buf_clear_file(curbuf); + curbuf->b_op_start.lnum = 0; /* clear '[ and '] marks */ + curbuf->b_op_end.lnum = 0; + } + +/* + * If we get here we are sure to start editing + */ + /* Assume success now */ + retval = OK; + + /* + * Check if we are editing the w_arg_idx file in the argument list. + */ + check_arg_idx(curwin); + + if (!auto_buf) + { + /* + * Set cursor and init window before reading the file and executing + * autocommands. This allows for the autocommands to position the + * cursor. + */ + curwin_init(); + +#ifdef FEAT_FOLDING + /* It's possible that all lines in the buffer changed. Need to update + * automatic folding for all windows where it's used. */ + { + win_T *win; + tabpage_T *tp; + + FOR_ALL_TAB_WINDOWS(tp, win) + if (win->w_buffer == curbuf) + foldUpdateAll(win); + } +#endif + + /* Change directories when the 'acd' option is set. */ + DO_AUTOCHDIR; + + /* + * Careful: open_buffer() and apply_autocmds() may change the current + * buffer and window. + */ + orig_pos = curwin->w_cursor; + topline = curwin->w_topline; + if (!oldbuf) /* need to read the file */ + { +#if defined(HAS_SWAP_EXISTS_ACTION) + swap_exists_action = SEA_DIALOG; +#endif + curbuf->b_flags |= BF_CHECK_RO; /* set/reset 'ro' flag */ + + /* + * Open the buffer and read the file. + */ +#if defined(FEAT_EVAL) + if (should_abort(open_buffer(FALSE, eap, readfile_flags))) + retval = FAIL; +#else + (void)open_buffer(FALSE, eap, readfile_flags); +#endif + +#if defined(HAS_SWAP_EXISTS_ACTION) + if (swap_exists_action == SEA_QUIT) + retval = FAIL; + handle_swap_exists(&old_curbuf); +#endif + } + else + { + /* Read the modelines, but only to set window-local options. Any + * buffer-local options have already been set and may have been + * changed by the user. */ + do_modelines(OPT_WINONLY); + + apply_autocmds_retval(EVENT_BUFENTER, NULL, NULL, FALSE, curbuf, + &retval); + apply_autocmds_retval(EVENT_BUFWINENTER, NULL, NULL, FALSE, curbuf, + &retval); + } + check_arg_idx(curwin); + + /* If autocommands change the cursor position or topline, we should + * keep it. Also when it moves within a line. But not when it moves + * to the first non-blank. */ + if (!EQUAL_POS(curwin->w_cursor, orig_pos)) + { + char_u *text = ml_get_curline(); + + if (curwin->w_cursor.lnum != orig_pos.lnum + || curwin->w_cursor.col != (int)(skipwhite(text) - text)) + { + newlnum = curwin->w_cursor.lnum; + newcol = curwin->w_cursor.col; + } + } + if (curwin->w_topline == topline) + topline = 0; + + /* Even when cursor didn't move we need to recompute topline. */ + changed_line_abv_curs(); + +#ifdef FEAT_TITLE + maketitle(); +#endif + } + +#ifdef FEAT_DIFF + /* Tell the diff stuff that this buffer is new and/or needs updating. + * Also needed when re-editing the same buffer, because unloading will + * have removed it as a diff buffer. */ + if (curwin->w_p_diff) + { + diff_buf_add(curbuf); + diff_invalidate(curbuf); + } +#endif + +#ifdef FEAT_SPELL + /* If the window options were changed may need to set the spell language. + * Can only do this after the buffer has been properly setup. */ + if (did_get_winopts && curwin->w_p_spell && *curwin->w_s->b_p_spl != NUL) + (void)did_set_spelllang(curwin); +#endif + + if (command == NULL) + { + if (newcol >= 0) /* position set by autocommands */ + { + curwin->w_cursor.lnum = newlnum; + curwin->w_cursor.col = newcol; + check_cursor(); + } + else if (newlnum > 0) /* line number from caller or old position */ + { + curwin->w_cursor.lnum = newlnum; + check_cursor_lnum(); + if (solcol >= 0 && !p_sol) + { + /* 'sol' is off: Use last known column. */ + curwin->w_cursor.col = solcol; + check_cursor_col(); + curwin->w_cursor.coladd = 0; + curwin->w_set_curswant = TRUE; + } + else + beginline(BL_SOL | BL_FIX); + } + else /* no line number, go to last line in Ex mode */ + { + if (exmode_active) + curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; + beginline(BL_WHITE | BL_FIX); + } + } + + /* Check if cursors in other windows on the same buffer are still valid */ + check_lnums(FALSE); + + /* + * Did not read the file, need to show some info about the file. + * Do this after setting the cursor. + */ + if (oldbuf && !auto_buf) + { + int msg_scroll_save = msg_scroll; + + /* Obey the 'O' flag in 'cpoptions': overwrite any previous file + * message. */ + if (shortmess(SHM_OVERALL) && !exiting && p_verbose == 0) + msg_scroll = FALSE; + if (!msg_scroll) /* wait a bit when overwriting an error msg */ + check_for_delay(FALSE); + msg_start(); + msg_scroll = msg_scroll_save; + msg_scrolled_ign = TRUE; + + if (!shortmess(SHM_FILEINFO)) + fileinfo(FALSE, TRUE, FALSE); + + msg_scrolled_ign = FALSE; + } + +#ifdef FEAT_VIMINFO + curbuf->b_last_used = vim_time(); +#endif + + if (command != NULL) + do_cmdline(command, NULL, NULL, DOCMD_VERBOSE); + +#ifdef FEAT_KEYMAP + if (curbuf->b_kmap_state & KEYMAP_INIT) + (void)keymap_init(); +#endif + + --RedrawingDisabled; + did_inc_redrawing_disabled = FALSE; + if (!skip_redraw) + { + n = *so_ptr; + if (topline == 0 && command == NULL) + *so_ptr = 9999; // force cursor halfway the window + update_topline(); + curwin->w_scbind_pos = curwin->w_topline; + *so_ptr = n; + redraw_curbuf_later(NOT_VALID); /* redraw this buffer later */ + } + + if (p_im) + need_start_insertmode = TRUE; + +#ifdef FEAT_AUTOCHDIR + /* Change directories when the 'acd' option is set and we aren't already in + * that directory (should already be done above). Expect getcwd() to be + * faster than calling shorten_fnames() unnecessarily. */ + if (p_acd && curbuf->b_ffname != NULL) + { + char_u curdir[MAXPATHL]; + char_u filedir[MAXPATHL]; + + vim_strncpy(filedir, curbuf->b_ffname, MAXPATHL - 1); + *gettail_sep(filedir) = NUL; + if (mch_dirname(curdir, MAXPATHL) != FAIL + && vim_fnamecmp(curdir, filedir) != 0) + do_autochdir(); + } +#endif + +#if defined(FEAT_NETBEANS_INTG) + if (curbuf->b_ffname != NULL) + { +# ifdef FEAT_NETBEANS_INTG + if ((flags & ECMD_SET_HELP) != ECMD_SET_HELP) + netbeans_file_opened(curbuf); +# endif + } +#endif + +theend: + if (did_inc_redrawing_disabled) + --RedrawingDisabled; +#if defined(FEAT_EVAL) + if (did_set_swapcommand) + set_vim_var_string(VV_SWAPCOMMAND, NULL, -1); +#endif +#ifdef FEAT_BROWSE + vim_free(browse_file); +#endif + vim_free(free_fname); + return retval; +} + + static void +delbuf_msg(char_u *name) +{ + semsg(_("E143: Autocommands unexpectedly deleted new buffer %s"), + name == NULL ? (char_u *)"" : name); + vim_free(name); + au_new_curbuf.br_buf = NULL; + au_new_curbuf.br_buf_free_count = 0; +} + +static int append_indent = 0; /* autoindent for first line */ + +/* + * ":insert" and ":append", also used by ":change" + */ + void +ex_append(exarg_T *eap) +{ + char_u *theline; + int did_undo = FALSE; + linenr_T lnum = eap->line2; + int indent = 0; + char_u *p; + int vcol; + int empty = (curbuf->b_ml.ml_flags & ML_EMPTY); + + /* the ! flag toggles autoindent */ + if (eap->forceit) + curbuf->b_p_ai = !curbuf->b_p_ai; + + /* First autoindent comes from the line we start on */ + if (eap->cmdidx != CMD_change && curbuf->b_p_ai && lnum > 0) + append_indent = get_indent_lnum(lnum); + + if (eap->cmdidx != CMD_append) + --lnum; + + /* when the buffer is empty need to delete the dummy line */ + if (empty && lnum == 1) + lnum = 0; + + State = INSERT; /* behave like in Insert mode */ + if (curbuf->b_p_iminsert == B_IMODE_LMAP) + State |= LANGMAP; + + for (;;) + { + msg_scroll = TRUE; + need_wait_return = FALSE; + if (curbuf->b_p_ai) + { + if (append_indent >= 0) + { + indent = append_indent; + append_indent = -1; + } + else if (lnum > 0) + indent = get_indent_lnum(lnum); + } + ex_keep_indent = FALSE; + if (eap->getline == NULL) + { + /* No getline() function, use the lines that follow. This ends + * when there is no more. */ + if (eap->nextcmd == NULL || *eap->nextcmd == NUL) + break; + p = vim_strchr(eap->nextcmd, NL); + if (p == NULL) + p = eap->nextcmd + STRLEN(eap->nextcmd); + theline = vim_strnsave(eap->nextcmd, (int)(p - eap->nextcmd)); + if (*p != NUL) + ++p; + eap->nextcmd = p; + } + else + { + int save_State = State; + + /* Set State to avoid the cursor shape to be set to INSERT mode + * when getline() returns. */ + State = CMDLINE; + theline = eap->getline( +#ifdef FEAT_EVAL + eap->cstack->cs_looplevel > 0 ? -1 : +#endif + NUL, eap->cookie, indent); + State = save_State; + } + lines_left = Rows - 1; + if (theline == NULL) + break; + + /* Using ^ CTRL-D in getexmodeline() makes us repeat the indent. */ + if (ex_keep_indent) + append_indent = indent; + + /* Look for the "." after automatic indent. */ + vcol = 0; + for (p = theline; indent > vcol; ++p) + { + if (*p == ' ') + ++vcol; + else if (*p == TAB) + vcol += 8 - vcol % 8; + else + break; + } + if ((p[0] == '.' && p[1] == NUL) + || (!did_undo && u_save(lnum, lnum + 1 + (empty ? 1 : 0)) + == FAIL)) + { + vim_free(theline); + break; + } + + /* don't use autoindent if nothing was typed. */ + if (p[0] == NUL) + theline[0] = NUL; + + did_undo = TRUE; + ml_append(lnum, theline, (colnr_T)0, FALSE); + appended_lines_mark(lnum + (empty ? 1 : 0), 1L); + + vim_free(theline); + ++lnum; + + if (empty) + { + ml_delete(2L, FALSE); + empty = FALSE; + } + } + State = NORMAL; + + if (eap->forceit) + curbuf->b_p_ai = !curbuf->b_p_ai; + + /* "start" is set to eap->line2+1 unless that position is invalid (when + * eap->line2 pointed to the end of the buffer and nothing was appended) + * "end" is set to lnum when something has been appended, otherwise + * it is the same than "start" -- Acevedo */ + curbuf->b_op_start.lnum = (eap->line2 < curbuf->b_ml.ml_line_count) ? + eap->line2 + 1 : curbuf->b_ml.ml_line_count; + if (eap->cmdidx != CMD_append) + --curbuf->b_op_start.lnum; + curbuf->b_op_end.lnum = (eap->line2 < lnum) + ? lnum : curbuf->b_op_start.lnum; + curbuf->b_op_start.col = curbuf->b_op_end.col = 0; + curwin->w_cursor.lnum = lnum; + check_cursor_lnum(); + beginline(BL_SOL | BL_FIX); + + need_wait_return = FALSE; /* don't use wait_return() now */ + ex_no_reprint = TRUE; +} + +/* + * ":change" + */ + void +ex_change(exarg_T *eap) +{ + linenr_T lnum; + + if (eap->line2 >= eap->line1 + && u_save(eap->line1 - 1, eap->line2 + 1) == FAIL) + return; + + /* the ! flag toggles autoindent */ + if (eap->forceit ? !curbuf->b_p_ai : curbuf->b_p_ai) + append_indent = get_indent_lnum(eap->line1); + + for (lnum = eap->line2; lnum >= eap->line1; --lnum) + { + if (curbuf->b_ml.ml_flags & ML_EMPTY) /* nothing to delete */ + break; + ml_delete(eap->line1, FALSE); + } + + /* make sure the cursor is not beyond the end of the file now */ + check_cursor_lnum(); + deleted_lines_mark(eap->line1, (long)(eap->line2 - lnum)); + + /* ":append" on the line above the deleted lines. */ + eap->line2 = eap->line1; + ex_append(eap); +} + + void +ex_z(exarg_T *eap) +{ + char_u *x; + long bigness; + char_u *kind; + int minus = 0; + linenr_T start, end, curs, i; + int j; + linenr_T lnum = eap->line2; + + /* Vi compatible: ":z!" uses display height, without a count uses + * 'scroll' */ + if (eap->forceit) + bigness = curwin->w_height; + else if (!ONE_WINDOW) + bigness = curwin->w_height - 3; + else + bigness = curwin->w_p_scr * 2; + if (bigness < 1) + bigness = 1; + + x = eap->arg; + kind = x; + if (*kind == '-' || *kind == '+' || *kind == '=' + || *kind == '^' || *kind == '.') + ++x; + while (*x == '-' || *x == '+') + ++x; + + if (*x != 0) + { + if (!VIM_ISDIGIT(*x)) + { + emsg(_("E144: non-numeric argument to :z")); + return; + } + else + { + bigness = atol((char *)x); + + /* bigness could be < 0 if atol(x) overflows. */ + if (bigness > 2 * curbuf->b_ml.ml_line_count || bigness < 0) + bigness = 2 * curbuf->b_ml.ml_line_count; + + p_window = bigness; + if (*kind == '=') + bigness += 2; + } + } + + /* the number of '-' and '+' multiplies the distance */ + if (*kind == '-' || *kind == '+') + for (x = kind + 1; *x == *kind; ++x) + ; + + switch (*kind) + { + case '-': + start = lnum - bigness * (linenr_T)(x - kind) + 1; + end = start + bigness - 1; + curs = end; + break; + + case '=': + start = lnum - (bigness + 1) / 2 + 1; + end = lnum + (bigness + 1) / 2 - 1; + curs = lnum; + minus = 1; + break; + + case '^': + start = lnum - bigness * 2; + end = lnum - bigness; + curs = lnum - bigness; + break; + + case '.': + start = lnum - (bigness + 1) / 2 + 1; + end = lnum + (bigness + 1) / 2 - 1; + curs = end; + break; + + default: /* '+' */ + start = lnum; + if (*kind == '+') + start += bigness * (linenr_T)(x - kind - 1) + 1; + else if (eap->addr_count == 0) + ++start; + end = start + bigness - 1; + curs = end; + break; + } + + if (start < 1) + start = 1; + + if (end > curbuf->b_ml.ml_line_count) + end = curbuf->b_ml.ml_line_count; + + if (curs > curbuf->b_ml.ml_line_count) + curs = curbuf->b_ml.ml_line_count; + else if (curs < 1) + curs = 1; + + for (i = start; i <= end; i++) + { + if (minus && i == lnum) + { + msg_putchar('\n'); + + for (j = 1; j < Columns; j++) + msg_putchar('-'); + } + + print_line(i, eap->flags & EXFLAG_NR, eap->flags & EXFLAG_LIST); + + if (minus && i == lnum) + { + msg_putchar('\n'); + + for (j = 1; j < Columns; j++) + msg_putchar('-'); + } + } + + if (curwin->w_cursor.lnum != curs) + { + curwin->w_cursor.lnum = curs; + curwin->w_cursor.col = 0; + } + ex_no_reprint = TRUE; +} + +/* + * Check if the restricted flag is set. + * If so, give an error message and return TRUE. + * Otherwise, return FALSE. + */ + int +check_restricted(void) +{ + if (restricted) + { + emsg(_("E145: Shell commands not allowed in rvim")); + return TRUE; + } + return FALSE; +} + +/* + * Check if the secure flag is set (.exrc or .vimrc in current directory). + * If so, give an error message and return TRUE. + * Otherwise, return FALSE. + */ + int +check_secure(void) +{ + if (secure) + { + secure = 2; + emsg(_(e_curdir)); + return TRUE; + } +#ifdef HAVE_SANDBOX + /* + * In the sandbox more things are not allowed, including the things + * disallowed in secure mode. + */ + if (sandbox != 0) + { + emsg(_(e_sandbox)); + return TRUE; + } +#endif + return FALSE; +} + +static char_u *old_sub = NULL; /* previous substitute pattern */ +static int global_need_beginline; /* call beginline() after ":g" */ + +/* + * Flags that are kept between calls to :substitute. + */ +typedef struct { + int do_all; /* do multiple substitutions per line */ + int do_ask; /* ask for confirmation */ + int do_count; /* count only */ + int do_error; /* if false, ignore errors */ + int do_print; /* print last line with subs. */ + int do_list; /* list last line with subs. */ + int do_number; /* list last line with line nr*/ + int do_ic; /* ignore case flag */ +} subflags_T; + +/* do_sub() + * + * Perform a substitution from line eap->line1 to line eap->line2 using the + * command pointed to by eap->arg which should be of the form: + * + * /pattern/substitution/{flags} + * + * The usual escapes are supported as described in the regexp docs. + */ + void +do_sub(exarg_T *eap) +{ + linenr_T lnum; + long i = 0; + regmmatch_T regmatch; + static subflags_T subflags = {FALSE, FALSE, FALSE, TRUE, FALSE, + FALSE, FALSE, 0}; +#ifdef FEAT_EVAL + subflags_T subflags_save; +#endif + int save_do_all; /* remember user specified 'g' flag */ + int save_do_ask; /* remember user specified 'c' flag */ + char_u *pat = NULL, *sub = NULL; /* init for GCC */ + int delimiter; + int sublen; + int got_quit = FALSE; + int got_match = FALSE; + int temp; + int which_pat; + char_u *cmd; + int save_State; + linenr_T first_line = 0; /* first changed line */ + linenr_T last_line= 0; /* below last changed line AFTER the + * change */ + linenr_T old_line_count = curbuf->b_ml.ml_line_count; + linenr_T line2; + long nmatch; /* number of lines in match */ + char_u *sub_firstline; /* allocated copy of first sub line */ + int endcolumn = FALSE; /* cursor in last column when done */ + pos_T old_cursor = curwin->w_cursor; + int start_nsubs; +#ifdef FEAT_EVAL + int save_ma = 0; +#endif + + cmd = eap->arg; + if (!global_busy) + { + sub_nsubs = 0; + sub_nlines = 0; + } + start_nsubs = sub_nsubs; + + if (eap->cmdidx == CMD_tilde) + which_pat = RE_LAST; /* use last used regexp */ + else + which_pat = RE_SUBST; /* use last substitute regexp */ + + /* new pattern and substitution */ + if (eap->cmd[0] == 's' && *cmd != NUL && !VIM_ISWHITE(*cmd) + && vim_strchr((char_u *)"0123456789cegriIp|\"", *cmd) == NULL) + { + /* don't accept alphanumeric for separator */ + if (isalpha(*cmd)) + { + emsg(_("E146: Regular expressions can't be delimited by letters")); + return; + } + /* + * undocumented vi feature: + * "\/sub/" and "\?sub?" use last used search pattern (almost like + * //sub/r). "\&sub&" use last substitute pattern (like //sub/). + */ + if (*cmd == '\\') + { + ++cmd; + if (vim_strchr((char_u *)"/?&", *cmd) == NULL) + { + emsg(_(e_backslash)); + return; + } + if (*cmd != '&') + which_pat = RE_SEARCH; /* use last '/' pattern */ + pat = (char_u *)""; /* empty search pattern */ + delimiter = *cmd++; /* remember delimiter character */ + } + else /* find the end of the regexp */ + { +#ifdef FEAT_FKMAP /* reverse the flow of the Farsi characters */ + if (p_altkeymap && curwin->w_p_rl) + lrF_sub(cmd); +#endif + which_pat = RE_LAST; /* use last used regexp */ + delimiter = *cmd++; /* remember delimiter character */ + pat = cmd; /* remember start of search pat */ + cmd = skip_regexp(cmd, delimiter, p_magic, &eap->arg); + if (cmd[0] == delimiter) /* end delimiter found */ + *cmd++ = NUL; /* replace it with a NUL */ + } + + /* + * Small incompatibility: vi sees '\n' as end of the command, but in + * Vim we want to use '\n' to find/substitute a NUL. + */ + sub = cmd; /* remember the start of the substitution */ + + while (cmd[0]) + { + if (cmd[0] == delimiter) /* end delimiter found */ + { + *cmd++ = NUL; /* replace it with a NUL */ + break; + } + if (cmd[0] == '\\' && cmd[1] != 0) /* skip escaped characters */ + ++cmd; + MB_PTR_ADV(cmd); + } + + if (!eap->skip) + { + /* In POSIX vi ":s/pat/%/" uses the previous subst. string. */ + if (STRCMP(sub, "%") == 0 + && vim_strchr(p_cpo, CPO_SUBPERCENT) != NULL) + { + if (old_sub == NULL) /* there is no previous command */ + { + emsg(_(e_nopresub)); + return; + } + sub = old_sub; + } + else + { + vim_free(old_sub); + old_sub = vim_strsave(sub); + } + } + } + else if (!eap->skip) /* use previous pattern and substitution */ + { + if (old_sub == NULL) /* there is no previous command */ + { + emsg(_(e_nopresub)); + return; + } + pat = NULL; /* search_regcomp() will use previous pattern */ + sub = old_sub; + + /* Vi compatibility quirk: repeating with ":s" keeps the cursor in the + * last column after using "$". */ + endcolumn = (curwin->w_curswant == MAXCOL); + } + + /* Recognize ":%s/\n//" and turn it into a join command, which is much + * more efficient. + * TODO: find a generic solution to make line-joining operations more + * efficient, avoid allocating a string that grows in size. + */ + if (pat != NULL && STRCMP(pat, "\\n") == 0 + && *sub == NUL + && (*cmd == NUL || (cmd[1] == NUL && (*cmd == 'g' || *cmd == 'l' + || *cmd == 'p' || *cmd == '#')))) + { + linenr_T joined_lines_count; + + curwin->w_cursor.lnum = eap->line1; + if (*cmd == 'l') + eap->flags = EXFLAG_LIST; + else if (*cmd == '#') + eap->flags = EXFLAG_NR; + else if (*cmd == 'p') + eap->flags = EXFLAG_PRINT; + + /* The number of lines joined is the number of lines in the range plus + * one. One less when the last line is included. */ + joined_lines_count = eap->line2 - eap->line1 + 1; + if (eap->line2 < curbuf->b_ml.ml_line_count) + ++joined_lines_count; + if (joined_lines_count > 1) + { + (void)do_join(joined_lines_count, FALSE, TRUE, FALSE, TRUE); + sub_nsubs = joined_lines_count - 1; + sub_nlines = 1; + (void)do_sub_msg(FALSE); + ex_may_print(eap); + } + + if (!cmdmod.keeppatterns) + save_re_pat(RE_SUBST, pat, p_magic); +#ifdef FEAT_CMDHIST + /* put pattern in history */ + add_to_history(HIST_SEARCH, pat, TRUE, NUL); +#endif + + return; + } + + /* + * Find trailing options. When '&' is used, keep old options. + */ + if (*cmd == '&') + ++cmd; + else + { + if (!p_ed) + { + if (p_gd) /* default is global on */ + subflags.do_all = TRUE; + else + subflags.do_all = FALSE; + subflags.do_ask = FALSE; + } + subflags.do_error = TRUE; + subflags.do_print = FALSE; + subflags.do_count = FALSE; + subflags.do_number = FALSE; + subflags.do_ic = 0; + } + while (*cmd) + { + /* + * Note that 'g' and 'c' are always inverted, also when p_ed is off. + * 'r' is never inverted. + */ + if (*cmd == 'g') + subflags.do_all = !subflags.do_all; + else if (*cmd == 'c') + subflags.do_ask = !subflags.do_ask; + else if (*cmd == 'n') + subflags.do_count = TRUE; + else if (*cmd == 'e') + subflags.do_error = !subflags.do_error; + else if (*cmd == 'r') /* use last used regexp */ + which_pat = RE_LAST; + else if (*cmd == 'p') + subflags.do_print = TRUE; + else if (*cmd == '#') + { + subflags.do_print = TRUE; + subflags.do_number = TRUE; + } + else if (*cmd == 'l') + { + subflags.do_print = TRUE; + subflags.do_list = TRUE; + } + else if (*cmd == 'i') /* ignore case */ + subflags.do_ic = 'i'; + else if (*cmd == 'I') /* don't ignore case */ + subflags.do_ic = 'I'; + else + break; + ++cmd; + } + if (subflags.do_count) + subflags.do_ask = FALSE; + + save_do_all = subflags.do_all; + save_do_ask = subflags.do_ask; + + /* + * check for a trailing count + */ + cmd = skipwhite(cmd); + if (VIM_ISDIGIT(*cmd)) + { + i = getdigits(&cmd); + if (i <= 0 && !eap->skip && subflags.do_error) + { + emsg(_(e_zerocount)); + return; + } + eap->line1 = eap->line2; + eap->line2 += i - 1; + if (eap->line2 > curbuf->b_ml.ml_line_count) + eap->line2 = curbuf->b_ml.ml_line_count; + } + + /* + * check for trailing command or garbage + */ + cmd = skipwhite(cmd); + if (*cmd && *cmd != '"') /* if not end-of-line or comment */ + { + eap->nextcmd = check_nextcmd(cmd); + if (eap->nextcmd == NULL) + { + emsg(_(e_trailing)); + return; + } + } + + if (eap->skip) /* not executing commands, only parsing */ + return; + + if (!subflags.do_count && !curbuf->b_p_ma) + { + /* Substitution is not allowed in non-'modifiable' buffer */ + emsg(_(e_modifiable)); + return; + } + + if (search_regcomp(pat, RE_SUBST, which_pat, SEARCH_HIS, ®match) == FAIL) + { + if (subflags.do_error) + emsg(_(e_invcmd)); + return; + } + + /* the 'i' or 'I' flag overrules 'ignorecase' and 'smartcase' */ + if (subflags.do_ic == 'i') + regmatch.rmm_ic = TRUE; + else if (subflags.do_ic == 'I') + regmatch.rmm_ic = FALSE; + + sub_firstline = NULL; + + /* + * ~ in the substitute pattern is replaced with the old pattern. + * We do it here once to avoid it to be replaced over and over again. + * But don't do it when it starts with "\=", then it's an expression. + */ + if (!(sub[0] == '\\' && sub[1] == '=')) + sub = regtilde(sub, p_magic); + + /* + * Check for a match on each line. + */ + line2 = eap->line2; + for (lnum = eap->line1; lnum <= line2 && !(got_quit +#if defined(FEAT_EVAL) + || aborting() +#endif + ); ++lnum) + { + nmatch = vim_regexec_multi(®match, curwin, curbuf, lnum, + (colnr_T)0, NULL, NULL); + if (nmatch) + { + colnr_T copycol; + colnr_T matchcol; + colnr_T prev_matchcol = MAXCOL; + char_u *new_end, *new_start = NULL; + unsigned new_start_len = 0; + char_u *p1; + int did_sub = FALSE; + int lastone; + int len, copy_len, needed_len; + long nmatch_tl = 0; /* nr of lines matched below lnum */ + int do_again; /* do it again after joining lines */ + int skip_match = FALSE; + linenr_T sub_firstlnum; /* nr of first sub line */ + + /* + * The new text is build up step by step, to avoid too much + * copying. There are these pieces: + * sub_firstline The old text, unmodified. + * copycol Column in the old text where we started + * looking for a match; from here old text still + * needs to be copied to the new text. + * matchcol Column number of the old text where to look + * for the next match. It's just after the + * previous match or one further. + * prev_matchcol Column just after the previous match (if any). + * Mostly equal to matchcol, except for the first + * match and after skipping an empty match. + * regmatch.*pos Where the pattern matched in the old text. + * new_start The new text, all that has been produced so + * far. + * new_end The new text, where to append new text. + * + * lnum The line number where we found the start of + * the match. Can be below the line we searched + * when there is a \n before a \zs in the + * pattern. + * sub_firstlnum The line number in the buffer where to look + * for a match. Can be different from "lnum" + * when the pattern or substitute string contains + * line breaks. + * + * Special situations: + * - When the substitute string contains a line break, the part up + * to the line break is inserted in the text, but the copy of + * the original line is kept. "sub_firstlnum" is adjusted for + * the inserted lines. + * - When the matched pattern contains a line break, the old line + * is taken from the line at the end of the pattern. The lines + * in the match are deleted later, "sub_firstlnum" is adjusted + * accordingly. + * + * The new text is built up in new_start[]. It has some extra + * room to avoid using alloc()/free() too often. new_start_len is + * the length of the allocated memory at new_start. + * + * Make a copy of the old line, so it won't be taken away when + * updating the screen or handling a multi-line match. The "old_" + * pointers point into this copy. + */ + sub_firstlnum = lnum; + copycol = 0; + matchcol = 0; + + /* At first match, remember current cursor position. */ + if (!got_match) + { + setpcmark(); + got_match = TRUE; + } + + /* + * Loop until nothing more to replace in this line. + * 1. Handle match with empty string. + * 2. If do_ask is set, ask for confirmation. + * 3. substitute the string. + * 4. if do_all is set, find next match + * 5. break if there isn't another match in this line + */ + for (;;) + { + /* Advance "lnum" to the line where the match starts. The + * match does not start in the first line when there is a line + * break before \zs. */ + if (regmatch.startpos[0].lnum > 0) + { + lnum += regmatch.startpos[0].lnum; + sub_firstlnum += regmatch.startpos[0].lnum; + nmatch -= regmatch.startpos[0].lnum; + VIM_CLEAR(sub_firstline); + } + + if (sub_firstline == NULL) + { + sub_firstline = vim_strsave(ml_get(sub_firstlnum)); + if (sub_firstline == NULL) + { + vim_free(new_start); + goto outofmem; + } + } + + /* Save the line number of the last change for the final + * cursor position (just like Vi). */ + curwin->w_cursor.lnum = lnum; + do_again = FALSE; + + /* + * 1. Match empty string does not count, except for first + * match. This reproduces the strange vi behaviour. + * This also catches endless loops. + */ + if (matchcol == prev_matchcol + && regmatch.endpos[0].lnum == 0 + && matchcol == regmatch.endpos[0].col) + { + if (sub_firstline[matchcol] == NUL) + /* We already were at the end of the line. Don't look + * for a match in this line again. */ + skip_match = TRUE; + else + { + /* search for a match at next column */ + if (has_mbyte) + matchcol += mb_ptr2len(sub_firstline + matchcol); + else + ++matchcol; + } + goto skip; + } + + /* Normally we continue searching for a match just after the + * previous match. */ + matchcol = regmatch.endpos[0].col; + prev_matchcol = matchcol; + + /* + * 2. If do_count is set only increase the counter. + * If do_ask is set, ask for confirmation. + */ + if (subflags.do_count) + { + /* For a multi-line match, put matchcol at the NUL at + * the end of the line and set nmatch to one, so that + * we continue looking for a match on the next line. + * Avoids that ":s/\nB\@=//gc" get stuck. */ + if (nmatch > 1) + { + matchcol = (colnr_T)STRLEN(sub_firstline); + nmatch = 1; + skip_match = TRUE; + } + sub_nsubs++; + did_sub = TRUE; +#ifdef FEAT_EVAL + /* Skip the substitution, unless an expression is used, + * then it is evaluated in the sandbox. */ + if (!(sub[0] == '\\' && sub[1] == '=')) +#endif + goto skip; + } + + if (subflags.do_ask) + { + int typed = 0; + + /* change State to CONFIRM, so that the mouse works + * properly */ + save_State = State; + State = CONFIRM; +#ifdef FEAT_MOUSE + setmouse(); /* disable mouse in xterm */ +#endif + curwin->w_cursor.col = regmatch.startpos[0].col; + if (curwin->w_p_crb) + do_check_cursorbind(); + + /* When 'cpoptions' contains "u" don't sync undo when + * asking for confirmation. */ + if (vim_strchr(p_cpo, CPO_UNDO) != NULL) + ++no_u_sync; + + /* + * Loop until 'y', 'n', 'q', CTRL-E or CTRL-Y typed. + */ + while (subflags.do_ask) + { + if (exmode_active) + { + char_u *resp; + colnr_T sc, ec; + + print_line_no_prefix(lnum, + subflags.do_number, subflags.do_list); + + getvcol(curwin, &curwin->w_cursor, &sc, NULL, NULL); + curwin->w_cursor.col = regmatch.endpos[0].col - 1; + if (curwin->w_cursor.col < 0) + curwin->w_cursor.col = 0; + getvcol(curwin, &curwin->w_cursor, NULL, NULL, &ec); + if (subflags.do_number || curwin->w_p_nu) + { + int numw = number_width(curwin) + 1; + sc += numw; + ec += numw; + } + msg_start(); + for (i = 0; i < (long)sc; ++i) + msg_putchar(' '); + for ( ; i <= (long)ec; ++i) + msg_putchar('^'); + + resp = getexmodeline('?', NULL, 0); + if (resp != NULL) + { + typed = *resp; + vim_free(resp); + } + } + else + { + char_u *orig_line = NULL; + int len_change = 0; +#ifdef FEAT_FOLDING + int save_p_fen = curwin->w_p_fen; + + curwin->w_p_fen = FALSE; +#endif + /* Invert the matched string. + * Remove the inversion afterwards. */ + temp = RedrawingDisabled; + RedrawingDisabled = 0; + + if (new_start != NULL) + { + /* There already was a substitution, we would + * like to show this to the user. We cannot + * really update the line, it would change + * what matches. Temporarily replace the line + * and change it back afterwards. */ + orig_line = vim_strsave(ml_get(lnum)); + if (orig_line != NULL) + { + char_u *new_line = concat_str(new_start, + sub_firstline + copycol); + + if (new_line == NULL) + VIM_CLEAR(orig_line); + else + { + /* Position the cursor relative to the + * end of the line, the previous + * substitute may have inserted or + * deleted characters before the + * cursor. */ + len_change = (int)STRLEN(new_line) + - (int)STRLEN(orig_line); + curwin->w_cursor.col += len_change; + ml_replace(lnum, new_line, FALSE); + } + } + } + + search_match_lines = regmatch.endpos[0].lnum + - regmatch.startpos[0].lnum; + search_match_endcol = regmatch.endpos[0].col + + len_change; + highlight_match = TRUE; + + update_topline(); + validate_cursor(); + update_screen(SOME_VALID); + highlight_match = FALSE; + redraw_later(SOME_VALID); + +#ifdef FEAT_FOLDING + curwin->w_p_fen = save_p_fen; +#endif + if (msg_row == Rows - 1) + msg_didout = FALSE; /* avoid a scroll-up */ + msg_starthere(); + i = msg_scroll; + msg_scroll = 0; /* truncate msg when + needed */ + msg_no_more = TRUE; + /* write message same highlighting as for + * wait_return */ + smsg_attr(HL_ATTR(HLF_R), + _("replace with %s (y/n/a/q/l/^E/^Y)?"), sub); + msg_no_more = FALSE; + msg_scroll = i; + showruler(TRUE); + windgoto(msg_row, msg_col); + RedrawingDisabled = temp; + +#ifdef USE_ON_FLY_SCROLL + dont_scroll = FALSE; /* allow scrolling here */ +#endif + ++no_mapping; /* don't map this key */ + ++allow_keys; /* allow special keys */ + typed = plain_vgetc(); + --allow_keys; + --no_mapping; + + /* clear the question */ + msg_didout = FALSE; /* don't scroll up */ + msg_col = 0; + gotocmdline(TRUE); + + /* restore the line */ + if (orig_line != NULL) + ml_replace(lnum, orig_line, FALSE); + } + + need_wait_return = FALSE; /* no hit-return prompt */ + if (typed == 'q' || typed == ESC || typed == Ctrl_C +#ifdef UNIX + || typed == intr_char +#endif + ) + { + got_quit = TRUE; + break; + } + if (typed == 'n') + break; + if (typed == 'y') + break; + if (typed == 'l') + { + /* last: replace and then stop */ + subflags.do_all = FALSE; + line2 = lnum; + break; + } + if (typed == 'a') + { + subflags.do_ask = FALSE; + break; + } +#ifdef FEAT_INS_EXPAND + if (typed == Ctrl_E) + scrollup_clamp(); + else if (typed == Ctrl_Y) + scrolldown_clamp(); +#endif + } + State = save_State; +#ifdef FEAT_MOUSE + setmouse(); +#endif + if (vim_strchr(p_cpo, CPO_UNDO) != NULL) + --no_u_sync; + + if (typed == 'n') + { + /* For a multi-line match, put matchcol at the NUL at + * the end of the line and set nmatch to one, so that + * we continue looking for a match on the next line. + * Avoids that ":%s/\nB\@=//gc" and ":%s/\n/,\r/gc" + * get stuck when pressing 'n'. */ + if (nmatch > 1) + { + matchcol = (colnr_T)STRLEN(sub_firstline); + skip_match = TRUE; + } + goto skip; + } + if (got_quit) + goto skip; + } + + /* Move the cursor to the start of the match, so that we can + * use "\=col("."). */ + curwin->w_cursor.col = regmatch.startpos[0].col; + + /* + * 3. substitute the string. + */ +#ifdef FEAT_EVAL + if (subflags.do_count) + { + /* prevent accidentally changing the buffer by a function */ + save_ma = curbuf->b_p_ma; + curbuf->b_p_ma = FALSE; + sandbox++; + } + /* Save flags for recursion. They can change for e.g. + * :s/^/\=execute("s#^##gn") */ + subflags_save = subflags; +#endif + /* get length of substitution part */ + sublen = vim_regsub_multi(®match, + sub_firstlnum - regmatch.startpos[0].lnum, + sub, sub_firstline, FALSE, p_magic, TRUE); +#ifdef FEAT_EVAL + /* Don't keep flags set by a recursive call. */ + subflags = subflags_save; + if (subflags.do_count) + { + curbuf->b_p_ma = save_ma; + if (sandbox > 0) + sandbox--; + goto skip; + } +#endif + + /* When the match included the "$" of the last line it may + * go beyond the last line of the buffer. */ + if (nmatch > curbuf->b_ml.ml_line_count - sub_firstlnum + 1) + { + nmatch = curbuf->b_ml.ml_line_count - sub_firstlnum + 1; + skip_match = TRUE; + } + + /* Need room for: + * - result so far in new_start (not for first sub in line) + * - original text up to match + * - length of substituted part + * - original text after match + * Adjust text properties here, since we have all information + * needed. + */ + if (nmatch == 1) + { + p1 = sub_firstline; +#ifdef FEAT_TEXT_PROP + if (curbuf->b_has_textprop) + adjust_prop_columns(lnum, regmatch.startpos[0].col, + sublen - 1 - (regmatch.endpos[0].col + - regmatch.startpos[0].col)); +#endif + } + else + { + p1 = ml_get(sub_firstlnum + nmatch - 1); + nmatch_tl += nmatch - 1; + } + copy_len = regmatch.startpos[0].col - copycol; + needed_len = copy_len + ((unsigned)STRLEN(p1) + - regmatch.endpos[0].col) + sublen + 1; + if (new_start == NULL) + { + /* + * Get some space for a temporary buffer to do the + * substitution into (and some extra space to avoid + * too many calls to alloc()/free()). + */ + new_start_len = needed_len + 50; + if ((new_start = alloc_check(new_start_len)) == NULL) + goto outofmem; + *new_start = NUL; + new_end = new_start; + } + else + { + /* + * Check if the temporary buffer is long enough to do the + * substitution into. If not, make it larger (with a bit + * extra to avoid too many calls to alloc()/free()). + */ + len = (unsigned)STRLEN(new_start); + needed_len += len; + if (needed_len > (int)new_start_len) + { + new_start_len = needed_len + 50; + if ((p1 = alloc_check(new_start_len)) == NULL) + { + vim_free(new_start); + goto outofmem; + } + mch_memmove(p1, new_start, (size_t)(len + 1)); + vim_free(new_start); + new_start = p1; + } + new_end = new_start + len; + } + + /* + * copy the text up to the part that matched + */ + mch_memmove(new_end, sub_firstline + copycol, (size_t)copy_len); + new_end += copy_len; + + (void)vim_regsub_multi(®match, + sub_firstlnum - regmatch.startpos[0].lnum, + sub, new_end, TRUE, p_magic, TRUE); + sub_nsubs++; + did_sub = TRUE; + + /* Move the cursor to the start of the line, to avoid that it + * is beyond the end of the line after the substitution. */ + curwin->w_cursor.col = 0; + + /* For a multi-line match, make a copy of the last matched + * line and continue in that one. */ + if (nmatch > 1) + { + sub_firstlnum += nmatch - 1; + vim_free(sub_firstline); + sub_firstline = vim_strsave(ml_get(sub_firstlnum)); + /* When going beyond the last line, stop substituting. */ + if (sub_firstlnum <= line2) + do_again = TRUE; + else + subflags.do_all = FALSE; + } + + /* Remember next character to be copied. */ + copycol = regmatch.endpos[0].col; + + if (skip_match) + { + /* Already hit end of the buffer, sub_firstlnum is one + * less than what it ought to be. */ + vim_free(sub_firstline); + sub_firstline = vim_strsave((char_u *)""); + copycol = 0; + } + + /* + * Now the trick is to replace CTRL-M chars with a real line + * break. This would make it impossible to insert a CTRL-M in + * the text. The line break can be avoided by preceding the + * CTRL-M with a backslash. To be able to insert a backslash, + * they must be doubled in the string and are halved here. + * That is Vi compatible. + */ + for (p1 = new_end; *p1; ++p1) + { + if (p1[0] == '\\' && p1[1] != NUL) /* remove backslash */ + STRMOVE(p1, p1 + 1); + else if (*p1 == CAR) + { + if (u_inssub(lnum) == OK) // prepare for undo + { + colnr_T plen = (colnr_T)(p1 - new_start + 1); + + *p1 = NUL; // truncate up to the CR + ml_append(lnum - 1, new_start, plen, FALSE); + mark_adjust(lnum + 1, (linenr_T)MAXLNUM, 1L, 0L); + if (subflags.do_ask) + appended_lines(lnum - 1, 1L); + else + { + if (first_line == 0) + first_line = lnum; + last_line = lnum + 1; + } +#ifdef FEAT_TEXT_PROP + adjust_props_for_split(lnum, plen, 1); +#endif + // all line numbers increase + ++sub_firstlnum; + ++lnum; + ++line2; + // move the cursor to the new line, like Vi + ++curwin->w_cursor.lnum; + // copy the rest + STRMOVE(new_start, p1 + 1); + p1 = new_start - 1; + } + } + else if (has_mbyte) + p1 += (*mb_ptr2len)(p1) - 1; + } + + /* + * 4. If do_all is set, find next match. + * Prevent endless loop with patterns that match empty + * strings, e.g. :s/$/pat/g or :s/[a-z]* /(&)/g. + * But ":s/\n/#/" is OK. + */ +skip: + /* We already know that we did the last subst when we are at + * the end of the line, except that a pattern like + * "bar\|\nfoo" may match at the NUL. "lnum" can be below + * "line2" when there is a \zs in the pattern after a line + * break. */ + lastone = (skip_match + || got_int + || got_quit + || lnum > line2 + || !(subflags.do_all || do_again) + || (sub_firstline[matchcol] == NUL && nmatch <= 1 + && !re_multiline(regmatch.regprog))); + nmatch = -1; + + /* + * Replace the line in the buffer when needed. This is + * skipped when there are more matches. + * The check for nmatch_tl is needed for when multi-line + * matching must replace the lines before trying to do another + * match, otherwise "\@<=" won't work. + * When the match starts below where we start searching also + * need to replace the line first (using \zs after \n). + */ + if (lastone + || nmatch_tl > 0 + || (nmatch = vim_regexec_multi(®match, curwin, + curbuf, sub_firstlnum, + matchcol, NULL, NULL)) == 0 + || regmatch.startpos[0].lnum > 0) + { + if (new_start != NULL) + { + /* + * Copy the rest of the line, that didn't match. + * "matchcol" has to be adjusted, we use the end of + * the line as reference, because the substitute may + * have changed the number of characters. Same for + * "prev_matchcol". + */ + STRCAT(new_start, sub_firstline + copycol); + matchcol = (colnr_T)STRLEN(sub_firstline) - matchcol; + prev_matchcol = (colnr_T)STRLEN(sub_firstline) + - prev_matchcol; + + if (u_savesub(lnum) != OK) + break; + ml_replace(lnum, new_start, TRUE); + + if (nmatch_tl > 0) + { + /* + * Matched lines have now been substituted and are + * useless, delete them. The part after the match + * has been appended to new_start, we don't need + * it in the buffer. + */ + ++lnum; + if (u_savedel(lnum, nmatch_tl) != OK) + break; + for (i = 0; i < nmatch_tl; ++i) + ml_delete(lnum, (int)FALSE); + mark_adjust(lnum, lnum + nmatch_tl - 1, + (long)MAXLNUM, -nmatch_tl); + if (subflags.do_ask) + deleted_lines(lnum, nmatch_tl); + --lnum; + line2 -= nmatch_tl; /* nr of lines decreases */ + nmatch_tl = 0; + } + + /* When asking, undo is saved each time, must also set + * changed flag each time. */ + if (subflags.do_ask) + changed_bytes(lnum, 0); + else + { + if (first_line == 0) + first_line = lnum; + last_line = lnum + 1; + } + + sub_firstlnum = lnum; + vim_free(sub_firstline); /* free the temp buffer */ + sub_firstline = new_start; + new_start = NULL; + matchcol = (colnr_T)STRLEN(sub_firstline) - matchcol; + prev_matchcol = (colnr_T)STRLEN(sub_firstline) + - prev_matchcol; + copycol = 0; + } + if (nmatch == -1 && !lastone) + nmatch = vim_regexec_multi(®match, curwin, curbuf, + sub_firstlnum, matchcol, NULL, NULL); + + /* + * 5. break if there isn't another match in this line + */ + if (nmatch <= 0) + { + /* If the match found didn't start where we were + * searching, do the next search in the line where we + * found the match. */ + if (nmatch == -1) + lnum -= regmatch.startpos[0].lnum; + break; + } + } + + line_breakcheck(); + } + + if (did_sub) + ++sub_nlines; + vim_free(new_start); /* for when substitute was cancelled */ + VIM_CLEAR(sub_firstline); /* free the copy of the original line */ + } + + line_breakcheck(); + } + + if (first_line != 0) + { + /* Need to subtract the number of added lines from "last_line" to get + * the line number before the change (same as adding the number of + * deleted lines). */ + i = curbuf->b_ml.ml_line_count - old_line_count; + changed_lines(first_line, 0, last_line - i, i); + } + +outofmem: + vim_free(sub_firstline); /* may have to free allocated copy of the line */ + + /* ":s/pat//n" doesn't move the cursor */ + if (subflags.do_count) + curwin->w_cursor = old_cursor; + + if (sub_nsubs > start_nsubs) + { + /* Set the '[ and '] marks. */ + curbuf->b_op_start.lnum = eap->line1; + curbuf->b_op_end.lnum = line2; + curbuf->b_op_start.col = curbuf->b_op_end.col = 0; + + if (!global_busy) + { + /* when interactive leave cursor on the match */ + if (!subflags.do_ask) + { + if (endcolumn) + coladvance((colnr_T)MAXCOL); + else + beginline(BL_WHITE | BL_FIX); + } + if (!do_sub_msg(subflags.do_count) && subflags.do_ask) + msg(""); + } + else + global_need_beginline = TRUE; + if (subflags.do_print) + print_line(curwin->w_cursor.lnum, + subflags.do_number, subflags.do_list); + } + else if (!global_busy) + { + if (got_int) /* interrupted */ + emsg(_(e_interr)); + else if (got_match) /* did find something but nothing substituted */ + msg(""); + else if (subflags.do_error) /* nothing found */ + semsg(_(e_patnotf2), get_search_pat()); + } + +#ifdef FEAT_FOLDING + if (subflags.do_ask && hasAnyFolding(curwin)) + /* Cursor position may require updating */ + changed_window_setting(); +#endif + + vim_regfree(regmatch.regprog); + + /* Restore the flag values, they can be used for ":&&". */ + subflags.do_all = save_do_all; + subflags.do_ask = save_do_ask; +} + +/* + * Give message for number of substitutions. + * Can also be used after a ":global" command. + * Return TRUE if a message was given. + */ + int +do_sub_msg( + int count_only) /* used 'n' flag for ":s" */ +{ + /* + * Only report substitutions when: + * - more than 'report' substitutions + * - command was typed by user, or number of changed lines > 'report' + * - giving messages is not disabled by 'lazyredraw' + */ + if (((sub_nsubs > p_report && (KeyTyped || sub_nlines > 1 || p_report < 1)) + || count_only) + && messaging()) + { + char *msg_single; + char *msg_plural; + + if (got_int) + STRCPY(msg_buf, _("(Interrupted) ")); + else + *msg_buf = NUL; + + msg_single = count_only + ? NGETTEXT("%ld match on %ld line", + "%ld matches on %ld line", sub_nsubs) + : NGETTEXT("%ld substitution on %ld line", + "%ld substitutions on %ld line", sub_nsubs); + msg_plural = count_only + ? NGETTEXT("%ld match on %ld lines", + "%ld matches on %ld lines", sub_nsubs) + : NGETTEXT("%ld substitution on %ld lines", + "%ld substitutions on %ld lines", sub_nsubs); + + vim_snprintf_add(msg_buf, sizeof(msg_buf), + NGETTEXT(msg_single, msg_plural, sub_nlines), + sub_nsubs, (long)sub_nlines); + + if (msg(msg_buf)) + /* save message to display it after redraw */ + set_keep_msg((char_u *)msg_buf, 0); + return TRUE; + } + if (got_int) + { + emsg(_(e_interr)); + return TRUE; + } + return FALSE; +} + + static void +global_exe_one(char_u *cmd, linenr_T lnum) +{ + curwin->w_cursor.lnum = lnum; + curwin->w_cursor.col = 0; + if (*cmd == NUL || *cmd == '\n') + do_cmdline((char_u *)"p", NULL, NULL, DOCMD_NOWAIT); + else + do_cmdline(cmd, NULL, NULL, DOCMD_NOWAIT); +} + +/* + * Execute a global command of the form: + * + * g/pattern/X : execute X on all lines where pattern matches + * v/pattern/X : execute X on all lines where pattern does not match + * + * where 'X' is an EX command + * + * The command character (as well as the trailing slash) is optional, and + * is assumed to be 'p' if missing. + * + * This is implemented in two passes: first we scan the file for the pattern and + * set a mark for each line that (not) matches. Secondly we execute the command + * for each line that has a mark. This is required because after deleting + * lines we do not know where to search for the next match. + */ + void +ex_global(exarg_T *eap) +{ + linenr_T lnum; /* line number according to old situation */ + int ndone = 0; + int type; /* first char of cmd: 'v' or 'g' */ + char_u *cmd; /* command argument */ + + char_u delim; /* delimiter, normally '/' */ + char_u *pat; + regmmatch_T regmatch; + int match; + int which_pat; + + /* When nesting the command works on one line. This allows for + * ":g/found/v/notfound/command". */ + if (global_busy && (eap->line1 != 1 + || eap->line2 != curbuf->b_ml.ml_line_count)) + { + /* will increment global_busy to break out of the loop */ + emsg(_("E147: Cannot do :global recursive with a range")); + return; + } + + if (eap->forceit) /* ":global!" is like ":vglobal" */ + type = 'v'; + else + type = *eap->cmd; + cmd = eap->arg; + which_pat = RE_LAST; /* default: use last used regexp */ + + /* + * undocumented vi feature: + * "\/" and "\?": use previous search pattern. + * "\&": use previous substitute pattern. + */ + if (*cmd == '\\') + { + ++cmd; + if (vim_strchr((char_u *)"/?&", *cmd) == NULL) + { + emsg(_(e_backslash)); + return; + } + if (*cmd == '&') + which_pat = RE_SUBST; /* use previous substitute pattern */ + else + which_pat = RE_SEARCH; /* use previous search pattern */ + ++cmd; + pat = (char_u *)""; + } + else if (*cmd == NUL) + { + emsg(_("E148: Regular expression missing from global")); + return; + } + else + { + delim = *cmd; /* get the delimiter */ + if (delim) + ++cmd; /* skip delimiter if there is one */ + pat = cmd; /* remember start of pattern */ + cmd = skip_regexp(cmd, delim, p_magic, &eap->arg); + if (cmd[0] == delim) /* end delimiter found */ + *cmd++ = NUL; /* replace it with a NUL */ + } + +#ifdef FEAT_FKMAP /* when in Farsi mode, reverse the character flow */ + if (p_altkeymap && curwin->w_p_rl) + lrFswap(pat,0); +#endif + + if (search_regcomp(pat, RE_BOTH, which_pat, SEARCH_HIS, ®match) == FAIL) + { + emsg(_(e_invcmd)); + return; + } + + if (global_busy) + { + lnum = curwin->w_cursor.lnum; + match = vim_regexec_multi(®match, curwin, curbuf, lnum, + (colnr_T)0, NULL, NULL); + if ((type == 'g' && match) || (type == 'v' && !match)) + global_exe_one(cmd, lnum); + } + else + { + /* + * pass 1: set marks for each (not) matching line + */ + for (lnum = eap->line1; lnum <= eap->line2 && !got_int; ++lnum) + { + /* a match on this line? */ + match = vim_regexec_multi(®match, curwin, curbuf, lnum, + (colnr_T)0, NULL, NULL); + if ((type == 'g' && match) || (type == 'v' && !match)) + { + ml_setmarked(lnum); + ndone++; + } + line_breakcheck(); + } + + /* + * pass 2: execute the command for each line that has been marked + */ + if (got_int) + msg(_(e_interr)); + else if (ndone == 0) + { + if (type == 'v') + smsg(_("Pattern found in every line: %s"), pat); + else + smsg(_("Pattern not found: %s"), pat); + } + else + { +#ifdef FEAT_CLIPBOARD + start_global_changes(); +#endif + global_exe(cmd); +#ifdef FEAT_CLIPBOARD + end_global_changes(); +#endif + } + + ml_clearmarked(); /* clear rest of the marks */ + } + + vim_regfree(regmatch.regprog); +} + +/* + * Execute "cmd" on lines marked with ml_setmarked(). + */ + void +global_exe(char_u *cmd) +{ + linenr_T old_lcount; /* b_ml.ml_line_count before the command */ + buf_T *old_buf = curbuf; /* remember what buffer we started in */ + linenr_T lnum; /* line number according to old situation */ + + /* + * Set current position only once for a global command. + * If global_busy is set, setpcmark() will not do anything. + * If there is an error, global_busy will be incremented. + */ + setpcmark(); + + /* When the command writes a message, don't overwrite the command. */ + msg_didout = TRUE; + + sub_nsubs = 0; + sub_nlines = 0; + global_need_beginline = FALSE; + global_busy = 1; + old_lcount = curbuf->b_ml.ml_line_count; + while (!got_int && (lnum = ml_firstmarked()) != 0 && global_busy == 1) + { + global_exe_one(cmd, lnum); + ui_breakcheck(); + } + + global_busy = 0; + if (global_need_beginline) + beginline(BL_WHITE | BL_FIX); + else + check_cursor(); /* cursor may be beyond the end of the line */ + + /* the cursor may not have moved in the text but a change in a previous + * line may move it on the screen */ + changed_line_abv_curs(); + + /* If it looks like no message was written, allow overwriting the + * command with the report for number of changes. */ + if (msg_col == 0 && msg_scrolled == 0) + msg_didout = FALSE; + + /* If substitutes done, report number of substitutes, otherwise report + * number of extra or deleted lines. + * Don't report extra or deleted lines in the edge case where the buffer + * we are in after execution is different from the buffer we started in. */ + if (!do_sub_msg(FALSE) && curbuf == old_buf) + msgmore(curbuf->b_ml.ml_line_count - old_lcount); +} + +#ifdef FEAT_VIMINFO + int +read_viminfo_sub_string(vir_T *virp, int force) +{ + if (force) + vim_free(old_sub); + if (force || old_sub == NULL) + old_sub = viminfo_readstring(virp, 1, TRUE); + return viminfo_readline(virp); +} + + void +write_viminfo_sub_string(FILE *fp) +{ + if (get_viminfo_parameter('/') != 0 && old_sub != NULL) + { + fputs(_("\n# Last Substitute String:\n$"), fp); + viminfo_writestring(fp, old_sub); + } +} +#endif /* FEAT_VIMINFO */ + +#if defined(EXITFREE) || defined(PROTO) + void +free_old_sub(void) +{ + vim_free(old_sub); +} +#endif + +#if defined(FEAT_QUICKFIX) || defined(PROTO) +/* + * Set up for a tagpreview. + * Return TRUE when it was created. + */ + int +prepare_tagpreview( + int undo_sync) /* sync undo when leaving the window */ +{ + win_T *wp; + +# ifdef FEAT_GUI + need_mouse_correct = TRUE; +# endif + + /* + * If there is already a preview window open, use that one. + */ + if (!curwin->w_p_pvw) + { + FOR_ALL_WINDOWS(wp) + if (wp->w_p_pvw) + break; + if (wp != NULL) + win_enter(wp, undo_sync); + else + { + /* + * There is no preview window open yet. Create one. + */ + if (win_split(g_do_tagpreview > 0 ? g_do_tagpreview : 0, 0) + == FAIL) + return FALSE; + curwin->w_p_pvw = TRUE; + curwin->w_p_wfh = TRUE; + RESET_BINDING(curwin); /* don't take over 'scrollbind' + and 'cursorbind' */ +# ifdef FEAT_DIFF + curwin->w_p_diff = FALSE; /* no 'diff' */ +# endif +# ifdef FEAT_FOLDING + curwin->w_p_fdc = 0; /* no 'foldcolumn' */ +# endif + return TRUE; + } + } + return FALSE; +} + +#endif + + +/* + * ":help": open a read-only window on a help file + */ + void +ex_help(exarg_T *eap) +{ + char_u *arg; + char_u *tag; + FILE *helpfd; /* file descriptor of help file */ + int n; + int i; + win_T *wp; + int num_matches; + char_u **matches; + char_u *p; + int empty_fnum = 0; + int alt_fnum = 0; + buf_T *buf; +#ifdef FEAT_MULTI_LANG + int len; + char_u *lang; +#endif +#ifdef FEAT_FOLDING + int old_KeyTyped = KeyTyped; +#endif + + if (eap != NULL) + { + /* + * A ":help" command ends at the first LF, or at a '|' that is + * followed by some text. Set nextcmd to the following command. + */ + for (arg = eap->arg; *arg; ++arg) + { + if (*arg == '\n' || *arg == '\r' + || (*arg == '|' && arg[1] != NUL && arg[1] != '|')) + { + *arg++ = NUL; + eap->nextcmd = arg; + break; + } + } + arg = eap->arg; + + if (eap->forceit && *arg == NUL && !curbuf->b_help) + { + emsg(_("E478: Don't panic!")); + return; + } + + if (eap->skip) /* not executing commands */ + return; + } + else + arg = (char_u *)""; + + /* remove trailing blanks */ + p = arg + STRLEN(arg) - 1; + while (p > arg && VIM_ISWHITE(*p) && p[-1] != '\\') + *p-- = NUL; + +#ifdef FEAT_MULTI_LANG + /* Check for a specified language */ + lang = check_help_lang(arg); +#endif + + /* When no argument given go to the index. */ + if (*arg == NUL) + arg = (char_u *)"help.txt"; + + /* + * Check if there is a match for the argument. + */ + n = find_help_tags(arg, &num_matches, &matches, + eap != NULL && eap->forceit); + + i = 0; +#ifdef FEAT_MULTI_LANG + if (n != FAIL && lang != NULL) + /* Find first item with the requested language. */ + for (i = 0; i < num_matches; ++i) + { + len = (int)STRLEN(matches[i]); + if (len > 3 && matches[i][len - 3] == '@' + && STRICMP(matches[i] + len - 2, lang) == 0) + break; + } +#endif + if (i >= num_matches || n == FAIL) + { +#ifdef FEAT_MULTI_LANG + if (lang != NULL) + semsg(_("E661: Sorry, no '%s' help for %s"), lang, arg); + else +#endif + semsg(_("E149: Sorry, no help for %s"), arg); + if (n != FAIL) + FreeWild(num_matches, matches); + return; + } + + /* The first match (in the requested language) is the best match. */ + tag = vim_strsave(matches[i]); + FreeWild(num_matches, matches); + +#ifdef FEAT_GUI + need_mouse_correct = TRUE; +#endif + + /* + * Re-use an existing help window or open a new one. + * Always open a new one for ":tab help". + */ + if (!bt_help(curwin->w_buffer) || cmdmod.tab != 0) + { + if (cmdmod.tab != 0) + wp = NULL; + else + FOR_ALL_WINDOWS(wp) + if (bt_help(wp->w_buffer)) + break; + if (wp != NULL && wp->w_buffer->b_nwindows > 0) + win_enter(wp, TRUE); + else + { + /* + * There is no help window yet. + * Try to open the file specified by the "helpfile" option. + */ + if ((helpfd = mch_fopen((char *)p_hf, READBIN)) == NULL) + { + smsg(_("Sorry, help file \"%s\" not found"), p_hf); + goto erret; + } + fclose(helpfd); + + /* Split off help window; put it at far top if no position + * specified, the current window is vertically split and + * narrow. */ + n = WSP_HELP; + if (cmdmod.split == 0 && curwin->w_width != Columns + && curwin->w_width < 80) + n |= WSP_TOP; + if (win_split(0, n) == FAIL) + goto erret; + + if (curwin->w_height < p_hh) + win_setheight((int)p_hh); + + /* + * Open help file (do_ecmd() will set b_help flag, readfile() will + * set b_p_ro flag). + * Set the alternate file to the previously edited file. + */ + alt_fnum = curbuf->b_fnum; + (void)do_ecmd(0, NULL, NULL, NULL, ECMD_LASTL, + ECMD_HIDE + ECMD_SET_HELP, + NULL); /* buffer is still open, don't store info */ + if (!cmdmod.keepalt) + curwin->w_alt_fnum = alt_fnum; + empty_fnum = curbuf->b_fnum; + } + } + + if (!p_im) + restart_edit = 0; /* don't want insert mode in help file */ + +#ifdef FEAT_FOLDING + /* Restore KeyTyped, setting 'filetype=help' may reset it. + * It is needed for do_tag top open folds under the cursor. */ + KeyTyped = old_KeyTyped; +#endif + + if (tag != NULL) + do_tag(tag, DT_HELP, 1, FALSE, TRUE); + + /* Delete the empty buffer if we're not using it. Careful: autocommands + * may have jumped to another window, check that the buffer is not in a + * window. */ + if (empty_fnum != 0 && curbuf->b_fnum != empty_fnum) + { + buf = buflist_findnr(empty_fnum); + if (buf != NULL && buf->b_nwindows == 0) + wipe_buffer(buf, TRUE); + } + + /* keep the previous alternate file */ + if (alt_fnum != 0 && curwin->w_alt_fnum == empty_fnum && !cmdmod.keepalt) + curwin->w_alt_fnum = alt_fnum; + +erret: + vim_free(tag); +} + +/* + * ":helpclose": Close one help window + */ + void +ex_helpclose(exarg_T *eap UNUSED) +{ + win_T *win; + + FOR_ALL_WINDOWS(win) + { + if (bt_help(win->w_buffer)) + { + win_close(win, FALSE); + return; + } + } +} + +#if defined(FEAT_MULTI_LANG) || defined(PROTO) +/* + * In an argument search for a language specifiers in the form "@xx". + * Changes the "@" to NUL if found, and returns a pointer to "xx". + * Returns NULL if not found. + */ + char_u * +check_help_lang(char_u *arg) +{ + int len = (int)STRLEN(arg); + + if (len >= 3 && arg[len - 3] == '@' && ASCII_ISALPHA(arg[len - 2]) + && ASCII_ISALPHA(arg[len - 1])) + { + arg[len - 3] = NUL; /* remove the '@' */ + return arg + len - 2; + } + return NULL; +} +#endif + +/* + * Return a heuristic indicating how well the given string matches. The + * smaller the number, the better the match. This is the order of priorities, + * from best match to worst match: + * - Match with least alpha-numeric characters is better. + * - Match with least total characters is better. + * - Match towards the start is better. + * - Match starting with "+" is worse (feature instead of command) + * Assumption is made that the matched_string passed has already been found to + * match some string for which help is requested. webb. + */ + int +help_heuristic( + char_u *matched_string, + int offset, /* offset for match */ + int wrong_case) /* no matching case */ +{ + int num_letters; + char_u *p; + + num_letters = 0; + for (p = matched_string; *p; p++) + if (ASCII_ISALNUM(*p)) + num_letters++; + + /* + * Multiply the number of letters by 100 to give it a much bigger + * weighting than the number of characters. + * If there only is a match while ignoring case, add 5000. + * If the match starts in the middle of a word, add 10000 to put it + * somewhere in the last half. + * If the match is more than 2 chars from the start, multiply by 200 to + * put it after matches at the start. + */ + if (ASCII_ISALNUM(matched_string[offset]) && offset > 0 + && ASCII_ISALNUM(matched_string[offset - 1])) + offset += 10000; + else if (offset > 2) + offset *= 200; + if (wrong_case) + offset += 5000; + /* Features are less interesting than the subjects themselves, but "+" + * alone is not a feature. */ + if (matched_string[0] == '+' && matched_string[1] != NUL) + offset += 100; + return (int)(100 * num_letters + STRLEN(matched_string) + offset); +} + +/* + * Compare functions for qsort() below, that checks the help heuristics number + * that has been put after the tagname by find_tags(). + */ + static int +#ifdef __BORLANDC__ +_RTLENTRYF +#endif +help_compare(const void *s1, const void *s2) +{ + char *p1; + char *p2; + + p1 = *(char **)s1 + strlen(*(char **)s1) + 1; + p2 = *(char **)s2 + strlen(*(char **)s2) + 1; + return strcmp(p1, p2); +} + +/* + * Find all help tags matching "arg", sort them and return in matches[], with + * the number of matches in num_matches. + * The matches will be sorted with a "best" match algorithm. + * When "keep_lang" is TRUE try keeping the language of the current buffer. + */ + int +find_help_tags( + char_u *arg, + int *num_matches, + char_u ***matches, + int keep_lang) +{ + char_u *s, *d; + int i; + static char *(mtable[]) = {"*", "g*", "[*", "]*", ":*", + "/*", "/\\*", "\"*", "**", + "cpo-*", "/\\(\\)", "/\\%(\\)", + "?", ":?", "?<CR>", "g?", "g?g?", "g??", + "-?", "q?", "v_g?", + "/\\?", "/\\z(\\)", "\\=", ":s\\=", + "[count]", "[quotex]", + "[range]", ":[range]", + "[pattern]", "\\|", "\\%$", + "s/\\~", "s/\\U", "s/\\L", + "s/\\1", "s/\\2", "s/\\3", "s/\\9"}; + static char *(rtable[]) = {"star", "gstar", "[star", "]star", ":star", + "/star", "/\\\\star", "quotestar", "starstar", + "cpo-star", "/\\\\(\\\\)", "/\\\\%(\\\\)", + "?", ":?", "?<CR>", "g?", "g?g?", "g??", + "-?", "q?", "v_g?", + "/\\\\?", "/\\\\z(\\\\)", "\\\\=", ":s\\\\=", + "\\[count]", "\\[quotex]", + "\\[range]", ":\\[range]", + "\\[pattern]", "\\\\bar", "/\\\\%\\$", + "s/\\\\\\~", "s/\\\\U", "s/\\\\L", + "s/\\\\1", "s/\\\\2", "s/\\\\3", "s/\\\\9"}; + static char *(expr_table[]) = {"!=?", "!~?", "<=?", "<?", "==?", "=~?", + ">=?", ">?", "is?", "isnot?"}; + int flags; + + d = IObuff; /* assume IObuff is long enough! */ + + if (STRNICMP(arg, "expr-", 5) == 0) + { + // When the string starting with "expr-" and containing '?' and matches + // the table, it is taken literally. Otherwise '?' is recognized as a + // wildcard. + for (i = (int)(sizeof(expr_table) / sizeof(char *)); --i >= 0; ) + if (STRCMP(arg + 5, expr_table[i]) == 0) + { + STRCPY(d, arg); + break; + } + } + else + { + // Recognize a few exceptions to the rule. Some strings that contain + // '*' with "star". Otherwise '*' is recognized as a wildcard. + for (i = (int)(sizeof(mtable) / sizeof(char *)); --i >= 0; ) + if (STRCMP(arg, mtable[i]) == 0) + { + STRCPY(d, rtable[i]); + break; + } + } + + if (i < 0) /* no match in table */ + { + /* Replace "\S" with "/\\S", etc. Otherwise every tag is matched. + * Also replace "\%^" and "\%(", they match every tag too. + * Also "\zs", "\z1", etc. + * Also "\@<", "\@=", "\@<=", etc. + * And also "\_$" and "\_^". */ + if (arg[0] == '\\' + && ((arg[1] != NUL && arg[2] == NUL) + || (vim_strchr((char_u *)"%_z@", arg[1]) != NULL + && arg[2] != NUL))) + { + STRCPY(d, "/\\\\"); + STRCPY(d + 3, arg + 1); + /* Check for "/\\_$", should be "/\\_\$" */ + if (d[3] == '_' && d[4] == '$') + STRCPY(d + 4, "\\$"); + } + else + { + /* Replace: + * "[:...:]" with "\[:...:]" + * "[++...]" with "\[++...]" + * "\{" with "\\{" -- matching "} \}" + */ + if ((arg[0] == '[' && (arg[1] == ':' + || (arg[1] == '+' && arg[2] == '+'))) + || (arg[0] == '\\' && arg[1] == '{')) + *d++ = '\\'; + + /* + * If tag starts with "('", skip the "(". Fixes CTRL-] on ('option'. + */ + if (*arg == '(' && arg[1] == '\'') + arg++; + for (s = arg; *s; ++s) + { + /* + * Replace "|" with "bar" and '"' with "quote" to match the name of + * the tags for these commands. + * Replace "*" with ".*" and "?" with "." to match command line + * completion. + * Insert a backslash before '~', '$' and '.' to avoid their + * special meaning. + */ + if (d - IObuff > IOSIZE - 10) /* getting too long!? */ + break; + switch (*s) + { + case '|': STRCPY(d, "bar"); + d += 3; + continue; + case '"': STRCPY(d, "quote"); + d += 5; + continue; + case '*': *d++ = '.'; + break; + case '?': *d++ = '.'; + continue; + case '$': + case '.': + case '~': *d++ = '\\'; + break; + } + + /* + * Replace "^x" by "CTRL-X". Don't do this for "^_" to make + * ":help i_^_CTRL-D" work. + * Insert '-' before and after "CTRL-X" when applicable. + */ + if (*s < ' ' || (*s == '^' && s[1] && (ASCII_ISALPHA(s[1]) + || vim_strchr((char_u *)"?@[\\]^", s[1]) != NULL))) + { + if (d > IObuff && d[-1] != '_' && d[-1] != '\\') + *d++ = '_'; /* prepend a '_' to make x_CTRL-x */ + STRCPY(d, "CTRL-"); + d += 5; + if (*s < ' ') + { +#ifdef EBCDIC + *d++ = CtrlChar(*s); +#else + *d++ = *s + '@'; +#endif + if (d[-1] == '\\') + *d++ = '\\'; /* double a backslash */ + } + else + *d++ = *++s; + if (s[1] != NUL && s[1] != '_') + *d++ = '_'; /* append a '_' */ + continue; + } + else if (*s == '^') /* "^" or "CTRL-^" or "^_" */ + *d++ = '\\'; + + /* + * Insert a backslash before a backslash after a slash, for search + * pattern tags: "/\|" --> "/\\|". + */ + else if (s[0] == '\\' && s[1] != '\\' + && *arg == '/' && s == arg + 1) + *d++ = '\\'; + + /* "CTRL-\_" -> "CTRL-\\_" to avoid the special meaning of "\_" in + * "CTRL-\_CTRL-N" */ + if (STRNICMP(s, "CTRL-\\_", 7) == 0) + { + STRCPY(d, "CTRL-\\\\"); + d += 7; + s += 6; + } + + *d++ = *s; + + /* + * If tag contains "({" or "([", tag terminates at the "(". + * This is for help on functions, e.g.: abs({expr}). + */ + if (*s == '(' && (s[1] == '{' || s[1] =='[')) + break; + + /* + * If tag starts with ', toss everything after a second '. Fixes + * CTRL-] on 'option'. (would include the trailing '.'). + */ + if (*s == '\'' && s > arg && *arg == '\'') + break; + /* Also '{' and '}'. */ + if (*s == '}' && s > arg && *arg == '{') + break; + } + *d = NUL; + + if (*IObuff == '`') + { + if (d > IObuff + 2 && d[-1] == '`') + { + /* remove the backticks from `command` */ + mch_memmove(IObuff, IObuff + 1, STRLEN(IObuff)); + d[-2] = NUL; + } + else if (d > IObuff + 3 && d[-2] == '`' && d[-1] == ',') + { + /* remove the backticks and comma from `command`, */ + mch_memmove(IObuff, IObuff + 1, STRLEN(IObuff)); + d[-3] = NUL; + } + else if (d > IObuff + 4 && d[-3] == '`' + && d[-2] == '\\' && d[-1] == '.') + { + /* remove the backticks and dot from `command`\. */ + mch_memmove(IObuff, IObuff + 1, STRLEN(IObuff)); + d[-4] = NUL; + } + } + } + } + + *matches = (char_u **)""; + *num_matches = 0; + flags = TAG_HELP | TAG_REGEXP | TAG_NAMES | TAG_VERBOSE; + if (keep_lang) + flags |= TAG_KEEP_LANG; + if (find_tags(IObuff, num_matches, matches, flags, (int)MAXCOL, NULL) == OK + && *num_matches > 0) + { + /* Sort the matches found on the heuristic number that is after the + * tag name. */ + qsort((void *)*matches, (size_t)*num_matches, + sizeof(char_u *), help_compare); + /* Delete more than TAG_MANY to reduce the size of the listing. */ + while (*num_matches > TAG_MANY) + vim_free((*matches)[--*num_matches]); + } + return OK; +} + +/* + * Called when starting to edit a buffer for a help file. + */ + static void +prepare_help_buffer(void) +{ + char_u *p; + + curbuf->b_help = TRUE; +#ifdef FEAT_QUICKFIX + set_string_option_direct((char_u *)"buftype", -1, + (char_u *)"help", OPT_FREE|OPT_LOCAL, 0); +#endif + + /* + * Always set these options after jumping to a help tag, because the + * user may have an autocommand that gets in the way. + * Accept all ASCII chars for keywords, except ' ', '*', '"', '|', and + * latin1 word characters (for translated help files). + * Only set it when needed, buf_init_chartab() is some work. + */ + p = +#ifdef EBCDIC + (char_u *)"65-255,^*,^|,^\""; +#else + (char_u *)"!-~,^*,^|,^\",192-255"; +#endif + if (STRCMP(curbuf->b_p_isk, p) != 0) + { + set_string_option_direct((char_u *)"isk", -1, p, OPT_FREE|OPT_LOCAL, 0); + check_buf_options(curbuf); + (void)buf_init_chartab(curbuf, FALSE); + } + +#ifdef FEAT_FOLDING + /* Don't use the global foldmethod.*/ + set_string_option_direct((char_u *)"fdm", -1, (char_u *)"manual", + OPT_FREE|OPT_LOCAL, 0); +#endif + + curbuf->b_p_ts = 8; /* 'tabstop' is 8 */ + curwin->w_p_list = FALSE; /* no list mode */ + + curbuf->b_p_ma = FALSE; /* not modifiable */ + curbuf->b_p_bin = FALSE; /* reset 'bin' before reading file */ + curwin->w_p_nu = 0; /* no line numbers */ + curwin->w_p_rnu = 0; /* no relative line numbers */ + RESET_BINDING(curwin); /* no scroll or cursor binding */ +#ifdef FEAT_ARABIC + curwin->w_p_arab = FALSE; /* no arabic mode */ +#endif +#ifdef FEAT_RIGHTLEFT + curwin->w_p_rl = FALSE; /* help window is left-to-right */ +#endif +#ifdef FEAT_FOLDING + curwin->w_p_fen = FALSE; /* No folding in the help window */ +#endif +#ifdef FEAT_DIFF + curwin->w_p_diff = FALSE; /* No 'diff' */ +#endif +#ifdef FEAT_SPELL + curwin->w_p_spell = FALSE; /* No spell checking */ +#endif + + set_buflisted(FALSE); +} + +/* + * After reading a help file: May cleanup a help buffer when syntax + * highlighting is not used. + */ + void +fix_help_buffer(void) +{ + linenr_T lnum; + char_u *line; + int in_example = FALSE; + int len; + char_u *fname; + char_u *p; + char_u *rt; + int mustfree; + + /* Set filetype to "help" if still needed. */ + if (STRCMP(curbuf->b_p_ft, "help") != 0) + { + ++curbuf_lock; + set_option_value((char_u *)"ft", 0L, (char_u *)"help", OPT_LOCAL); + --curbuf_lock; + } + +#ifdef FEAT_SYN_HL + if (!syntax_present(curwin)) +#endif + { + for (lnum = 1; lnum <= curbuf->b_ml.ml_line_count; ++lnum) + { + line = ml_get_buf(curbuf, lnum, FALSE); + len = (int)STRLEN(line); + if (in_example && len > 0 && !VIM_ISWHITE(line[0])) + { + /* End of example: non-white or '<' in first column. */ + if (line[0] == '<') + { + /* blank-out a '<' in the first column */ + line = ml_get_buf(curbuf, lnum, TRUE); + line[0] = ' '; + } + in_example = FALSE; + } + if (!in_example && len > 0) + { + if (line[len - 1] == '>' && (len == 1 || line[len - 2] == ' ')) + { + /* blank-out a '>' in the last column (start of example) */ + line = ml_get_buf(curbuf, lnum, TRUE); + line[len - 1] = ' '; + in_example = TRUE; + } + else if (line[len - 1] == '~') + { + /* blank-out a '~' at the end of line (header marker) */ + line = ml_get_buf(curbuf, lnum, TRUE); + line[len - 1] = ' '; + } + } + } + } + + /* + * In the "help.txt" and "help.abx" file, add the locally added help + * files. This uses the very first line in the help file. + */ + fname = gettail(curbuf->b_fname); + if (fnamecmp(fname, "help.txt") == 0 +#ifdef FEAT_MULTI_LANG + || (fnamencmp(fname, "help.", 5) == 0 + && ASCII_ISALPHA(fname[5]) + && ASCII_ISALPHA(fname[6]) + && TOLOWER_ASC(fname[7]) == 'x' + && fname[8] == NUL) +#endif + ) + { + for (lnum = 1; lnum < curbuf->b_ml.ml_line_count; ++lnum) + { + line = ml_get_buf(curbuf, lnum, FALSE); + if (strstr((char *)line, "*local-additions*") == NULL) + continue; + + /* Go through all directories in 'runtimepath', skipping + * $VIMRUNTIME. */ + p = p_rtp; + while (*p != NUL) + { + copy_option_part(&p, NameBuff, MAXPATHL, ","); + mustfree = FALSE; + rt = vim_getenv((char_u *)"VIMRUNTIME", &mustfree); + if (rt != NULL && fullpathcmp(rt, NameBuff, FALSE) != FPC_SAME) + { + int fcount; + char_u **fnames; + FILE *fd; + char_u *s; + int fi; + vimconv_T vc; + char_u *cp; + + /* Find all "doc/ *.txt" files in this directory. */ + add_pathsep(NameBuff); +#ifdef FEAT_MULTI_LANG + STRCAT(NameBuff, "doc/*.??[tx]"); +#else + STRCAT(NameBuff, "doc/*.txt"); +#endif + if (gen_expand_wildcards(1, &NameBuff, &fcount, + &fnames, EW_FILE|EW_SILENT) == OK + && fcount > 0) + { +#ifdef FEAT_MULTI_LANG + int i1, i2; + char_u *f1, *f2; + char_u *t1, *t2; + char_u *e1, *e2; + + /* If foo.abx is found use it instead of foo.txt in + * the same directory. */ + for (i1 = 0; i1 < fcount; ++i1) + { + for (i2 = 0; i2 < fcount; ++i2) + { + if (i1 == i2) + continue; + if (fnames[i1] == NULL || fnames[i2] == NULL) + continue; + f1 = fnames[i1]; + f2 = fnames[i2]; + t1 = gettail(f1); + t2 = gettail(f2); + e1 = vim_strrchr(t1, '.'); + e2 = vim_strrchr(t2, '.'); + if (e1 == NULL || e2 == NULL) + continue; + if (fnamecmp(e1, ".txt") != 0 + && fnamecmp(e1, fname + 4) != 0) + { + /* Not .txt and not .abx, remove it. */ + VIM_CLEAR(fnames[i1]); + continue; + } + if (e1 - f1 != e2 - f2 + || fnamencmp(f1, f2, e1 - f1) != 0) + continue; + if (fnamecmp(e1, ".txt") == 0 + && fnamecmp(e2, fname + 4) == 0) + /* use .abx instead of .txt */ + VIM_CLEAR(fnames[i1]); + } + } +#endif + for (fi = 0; fi < fcount; ++fi) + { + if (fnames[fi] == NULL) + continue; + fd = mch_fopen((char *)fnames[fi], "r"); + if (fd != NULL) + { + vim_fgets(IObuff, IOSIZE, fd); + if (IObuff[0] == '*' + && (s = vim_strchr(IObuff + 1, '*')) + != NULL) + { + int this_utf = MAYBE; + + /* Change tag definition to a + * reference and remove <CR>/<NL>. */ + IObuff[0] = '|'; + *s = '|'; + while (*s != NUL) + { + if (*s == '\r' || *s == '\n') + *s = NUL; + /* The text is utf-8 when a byte + * above 127 is found and no + * illegal byte sequence is found. + */ + if (*s >= 0x80 && this_utf != FALSE) + { + int l; + + this_utf = TRUE; + l = utf_ptr2len(s); + if (l == 1) + this_utf = FALSE; + s += l - 1; + } + ++s; + } + + /* The help file is latin1 or utf-8; + * conversion to the current + * 'encoding' may be required. */ + vc.vc_type = CONV_NONE; + convert_setup(&vc, (char_u *)( + this_utf == TRUE ? "utf-8" + : "latin1"), p_enc); + if (vc.vc_type == CONV_NONE) + /* No conversion needed. */ + cp = IObuff; + else + { + /* Do the conversion. If it fails + * use the unconverted text. */ + cp = string_convert(&vc, IObuff, + NULL); + if (cp == NULL) + cp = IObuff; + } + convert_setup(&vc, NULL, NULL); + + ml_append(lnum, cp, (colnr_T)0, FALSE); + if (cp != IObuff) + vim_free(cp); + ++lnum; + } + fclose(fd); + } + } + FreeWild(fcount, fnames); + } + } + if (mustfree) + vim_free(rt); + } + break; + } + } +} + +/* + * ":exusage" + */ + void +ex_exusage(exarg_T *eap UNUSED) +{ + do_cmdline_cmd((char_u *)"help ex-cmd-index"); +} + +/* + * ":viusage" + */ + void +ex_viusage(exarg_T *eap UNUSED) +{ + do_cmdline_cmd((char_u *)"help normal-index"); +} + +/* + * Generate tags in one help directory. + */ + static void +helptags_one( + char_u *dir, /* doc directory */ + char_u *ext, /* suffix, ".txt", ".itx", ".frx", etc. */ + char_u *tagfname, /* "tags" for English, "tags-fr" for French. */ + int add_help_tags) /* add "help-tags" tag */ +{ + FILE *fd_tags; + FILE *fd; + garray_T ga; + int filecount; + char_u **files; + char_u *p1, *p2; + int fi; + char_u *s; + int i; + char_u *fname; + int dirlen; + int utf8 = MAYBE; + int this_utf8; + int firstline; + int mix = FALSE; /* detected mixed encodings */ + + /* + * Find all *.txt files. + */ + dirlen = (int)STRLEN(dir); + STRCPY(NameBuff, dir); + STRCAT(NameBuff, "/**/*"); + STRCAT(NameBuff, ext); + if (gen_expand_wildcards(1, &NameBuff, &filecount, &files, + EW_FILE|EW_SILENT) == FAIL + || filecount == 0) + { + if (!got_int) + semsg(_("E151: No match: %s"), NameBuff); + return; + } + + /* + * Open the tags file for writing. + * Do this before scanning through all the files. + */ + STRCPY(NameBuff, dir); + add_pathsep(NameBuff); + STRCAT(NameBuff, tagfname); + fd_tags = mch_fopen((char *)NameBuff, "w"); + if (fd_tags == NULL) + { + semsg(_("E152: Cannot open %s for writing"), NameBuff); + FreeWild(filecount, files); + return; + } + + /* + * If using the "++t" argument or generating tags for "$VIMRUNTIME/doc" + * add the "help-tags" tag. + */ + ga_init2(&ga, (int)sizeof(char_u *), 100); + if (add_help_tags || fullpathcmp((char_u *)"$VIMRUNTIME/doc", + dir, FALSE) == FPC_SAME) + { + if (ga_grow(&ga, 1) == FAIL) + got_int = TRUE; + else + { + s = alloc(18 + (unsigned)STRLEN(tagfname)); + if (s == NULL) + got_int = TRUE; + else + { + sprintf((char *)s, "help-tags\t%s\t1\n", tagfname); + ((char_u **)ga.ga_data)[ga.ga_len] = s; + ++ga.ga_len; + } + } + } + + /* + * Go over all the files and extract the tags. + */ + for (fi = 0; fi < filecount && !got_int; ++fi) + { + fd = mch_fopen((char *)files[fi], "r"); + if (fd == NULL) + { + semsg(_("E153: Unable to open %s for reading"), files[fi]); + continue; + } + fname = files[fi] + dirlen + 1; + + firstline = TRUE; + while (!vim_fgets(IObuff, IOSIZE, fd) && !got_int) + { + if (firstline) + { + /* Detect utf-8 file by a non-ASCII char in the first line. */ + this_utf8 = MAYBE; + for (s = IObuff; *s != NUL; ++s) + if (*s >= 0x80) + { + int l; + + this_utf8 = TRUE; + l = utf_ptr2len(s); + if (l == 1) + { + /* Illegal UTF-8 byte sequence. */ + this_utf8 = FALSE; + break; + } + s += l - 1; + } + if (this_utf8 == MAYBE) /* only ASCII characters found */ + this_utf8 = FALSE; + if (utf8 == MAYBE) /* first file */ + utf8 = this_utf8; + else if (utf8 != this_utf8) + { + semsg(_("E670: Mix of help file encodings within a language: %s"), files[fi]); + mix = !got_int; + got_int = TRUE; + } + firstline = FALSE; + } + p1 = vim_strchr(IObuff, '*'); /* find first '*' */ + while (p1 != NULL) + { + /* Use vim_strbyte() instead of vim_strchr() so that when + * 'encoding' is dbcs it still works, don't find '*' in the + * second byte. */ + p2 = vim_strbyte(p1 + 1, '*'); /* find second '*' */ + if (p2 != NULL && p2 > p1 + 1) /* skip "*" and "**" */ + { + for (s = p1 + 1; s < p2; ++s) + if (*s == ' ' || *s == '\t' || *s == '|') + break; + + /* + * Only accept a *tag* when it consists of valid + * characters, there is white space before it and is + * followed by a white character or end-of-line. + */ + if (s == p2 + && (p1 == IObuff || p1[-1] == ' ' || p1[-1] == '\t') + && (vim_strchr((char_u *)" \t\n\r", s[1]) != NULL + || s[1] == '\0')) + { + *p2 = '\0'; + ++p1; + if (ga_grow(&ga, 1) == FAIL) + { + got_int = TRUE; + break; + } + s = alloc((unsigned)(p2 - p1 + STRLEN(fname) + 2)); + if (s == NULL) + { + got_int = TRUE; + break; + } + ((char_u **)ga.ga_data)[ga.ga_len] = s; + ++ga.ga_len; + sprintf((char *)s, "%s\t%s", p1, fname); + + /* find next '*' */ + p2 = vim_strchr(p2 + 1, '*'); + } + } + p1 = p2; + } + line_breakcheck(); + } + + fclose(fd); + } + + FreeWild(filecount, files); + + if (!got_int) + { + /* + * Sort the tags. + */ + if (ga.ga_data != NULL) + sort_strings((char_u **)ga.ga_data, ga.ga_len); + + /* + * Check for duplicates. + */ + for (i = 1; i < ga.ga_len; ++i) + { + p1 = ((char_u **)ga.ga_data)[i - 1]; + p2 = ((char_u **)ga.ga_data)[i]; + while (*p1 == *p2) + { + if (*p2 == '\t') + { + *p2 = NUL; + vim_snprintf((char *)NameBuff, MAXPATHL, + _("E154: Duplicate tag \"%s\" in file %s/%s"), + ((char_u **)ga.ga_data)[i], dir, p2 + 1); + emsg((char *)NameBuff); + *p2 = '\t'; + break; + } + ++p1; + ++p2; + } + } + + if (utf8 == TRUE) + fprintf(fd_tags, "!_TAG_FILE_ENCODING\tutf-8\t//\n"); + + /* + * Write the tags into the file. + */ + for (i = 0; i < ga.ga_len; ++i) + { + s = ((char_u **)ga.ga_data)[i]; + if (STRNCMP(s, "help-tags\t", 10) == 0) + /* help-tags entry was added in formatted form */ + fputs((char *)s, fd_tags); + else + { + fprintf(fd_tags, "%s\t/*", s); + for (p1 = s; *p1 != '\t'; ++p1) + { + /* insert backslash before '\\' and '/' */ + if (*p1 == '\\' || *p1 == '/') + putc('\\', fd_tags); + putc(*p1, fd_tags); + } + fprintf(fd_tags, "*\n"); + } + } + } + if (mix) + got_int = FALSE; /* continue with other languages */ + + for (i = 0; i < ga.ga_len; ++i) + vim_free(((char_u **)ga.ga_data)[i]); + ga_clear(&ga); + fclose(fd_tags); /* there is no check for an error... */ +} + +/* + * Generate tags in one help directory, taking care of translations. + */ + static void +do_helptags(char_u *dirname, int add_help_tags) +{ +#ifdef FEAT_MULTI_LANG + int len; + int i, j; + garray_T ga; + char_u lang[2]; + char_u ext[5]; + char_u fname[8]; + int filecount; + char_u **files; + + /* Get a list of all files in the help directory and in subdirectories. */ + STRCPY(NameBuff, dirname); + add_pathsep(NameBuff); + STRCAT(NameBuff, "**"); + if (gen_expand_wildcards(1, &NameBuff, &filecount, &files, + EW_FILE|EW_SILENT) == FAIL + || filecount == 0) + { + semsg(_("E151: No match: %s"), NameBuff); + return; + } + + /* Go over all files in the directory to find out what languages are + * present. */ + ga_init2(&ga, 1, 10); + for (i = 0; i < filecount; ++i) + { + len = (int)STRLEN(files[i]); + if (len > 4) + { + if (STRICMP(files[i] + len - 4, ".txt") == 0) + { + /* ".txt" -> language "en" */ + lang[0] = 'e'; + lang[1] = 'n'; + } + else if (files[i][len - 4] == '.' + && ASCII_ISALPHA(files[i][len - 3]) + && ASCII_ISALPHA(files[i][len - 2]) + && TOLOWER_ASC(files[i][len - 1]) == 'x') + { + /* ".abx" -> language "ab" */ + lang[0] = TOLOWER_ASC(files[i][len - 3]); + lang[1] = TOLOWER_ASC(files[i][len - 2]); + } + else + continue; + + /* Did we find this language already? */ + for (j = 0; j < ga.ga_len; j += 2) + if (STRNCMP(lang, ((char_u *)ga.ga_data) + j, 2) == 0) + break; + if (j == ga.ga_len) + { + /* New language, add it. */ + if (ga_grow(&ga, 2) == FAIL) + break; + ((char_u *)ga.ga_data)[ga.ga_len++] = lang[0]; + ((char_u *)ga.ga_data)[ga.ga_len++] = lang[1]; + } + } + } + + /* + * Loop over the found languages to generate a tags file for each one. + */ + for (j = 0; j < ga.ga_len; j += 2) + { + STRCPY(fname, "tags-xx"); + fname[5] = ((char_u *)ga.ga_data)[j]; + fname[6] = ((char_u *)ga.ga_data)[j + 1]; + if (fname[5] == 'e' && fname[6] == 'n') + { + /* English is an exception: use ".txt" and "tags". */ + fname[4] = NUL; + STRCPY(ext, ".txt"); + } + else + { + /* Language "ab" uses ".abx" and "tags-ab". */ + STRCPY(ext, ".xxx"); + ext[1] = fname[5]; + ext[2] = fname[6]; + } + helptags_one(dirname, ext, fname, add_help_tags); + } + + ga_clear(&ga); + FreeWild(filecount, files); + +#else + /* No language support, just use "*.txt" and "tags". */ + helptags_one(dirname, (char_u *)".txt", (char_u *)"tags", add_help_tags); +#endif +} + + static void +helptags_cb(char_u *fname, void *cookie) +{ + do_helptags(fname, *(int *)cookie); +} + +/* + * ":helptags" + */ + void +ex_helptags(exarg_T *eap) +{ + expand_T xpc; + char_u *dirname; + int add_help_tags = FALSE; + + /* Check for ":helptags ++t {dir}". */ + if (STRNCMP(eap->arg, "++t", 3) == 0 && VIM_ISWHITE(eap->arg[3])) + { + add_help_tags = TRUE; + eap->arg = skipwhite(eap->arg + 3); + } + + if (STRCMP(eap->arg, "ALL") == 0) + { + do_in_path(p_rtp, (char_u *)"doc", DIP_ALL + DIP_DIR, + helptags_cb, &add_help_tags); + } + else + { + ExpandInit(&xpc); + xpc.xp_context = EXPAND_DIRECTORIES; + dirname = ExpandOne(&xpc, eap->arg, NULL, + WILD_LIST_NOTFOUND|WILD_SILENT, WILD_EXPAND_FREE); + if (dirname == NULL || !mch_isdir(dirname)) + semsg(_("E150: Not a directory: %s"), eap->arg); + else + do_helptags(dirname, add_help_tags); + vim_free(dirname); + } +} + +/* + * Make the user happy. + */ + void +ex_smile(exarg_T *eap UNUSED) +{ + static char *code[] = { + "\34 \4o\14$\4ox\30 \2o\30$\1ox\25 \2o\36$\1o\11 \1o\1$\3 \2$\1 \1o\1$x\5 \1o\1 \1$\1 \2o\10 \1o\44$\1o\7 \2$\1 \2$\1 \2$\1o\1$x\2 \2o\1 \1$\1 \1$\1 \1\"\1$\6 \1o\11$\4 \15$\4 \11$\1o\7 \3$\1o\2$\1o\1$x\2 \1\"\6$\1o\1$\5 \1o\11$\6 \13$\6 \12$\1o\4 \10$x\4 \7$\4 \13$\6 \13$\6 \27$x\4 \27$\4 \15$\4 \16$\2 \3\"\3$x\5 \1\"\3$\4\"\61$\5 \1\"\3$x\6 \3$\3 \1o\62$\5 \1\"\3$\1ox\5 \1o\2$\1\"\3 \63$\7 \3$\1ox\5 \3$\4 \55$\1\"\1 \1\"\6$", + "\5o\4$\1ox\4 \1o\3$\4o\5$\2 \45$\3 \1o\21$x\4 \10$\1\"\4$\3 \42$\5 \4$\10\"x\3 \4\"\7 \4$\4 \1\"\34$\1\"\6 \1o\3$x\16 \1\"\3$\1o\5 \3\"\22$\1\"\2$\1\"\11 \3$x\20 \3$\1o\12 \1\"\2$\2\"\6$\4\"\13 \1o\3$x\21 \4$\1o\40 \1o\3$\1\"x\22 \1\"\4$\1o\6 \1o\6$\1o\1\"\4$\1o\10 \1o\4$x\24 \1\"\5$\2o\5 \2\"\4$\1o\5$\1o\3 \1o\4$\2\"x\27 \2\"\5$\4o\2 \1\"\3$\1o\11$\3\"x\32 \2\"\7$\2o\1 \12$x\42 \4\"\13$x\46 \14$x\47 \12$\1\"x\50 \1\"\3$\4\"x" + }; + char *p; + int n; + int i; + + msg_start(); + msg_putchar('\n'); + for (i = 0; i < 2; ++i) + for (p = code[i]; *p != NUL; ++p) + if (*p == 'x') + msg_putchar('\n'); + else + for (n = *p++; n > 0; --n) + if (*p == 'o' || *p == '$') + msg_putchar_attr(*p, HL_ATTR(HLF_L)); + else + msg_putchar(*p); + msg_clr_eos(); +} + +/* + * ":drop" + * Opens the first argument in a window. When there are two or more arguments + * the argument list is redefined. + */ + void +ex_drop(exarg_T *eap) +{ + int split = FALSE; + win_T *wp; + buf_T *buf; + tabpage_T *tp; + + /* + * Check if the first argument is already being edited in a window. If + * so, jump to that window. + * We would actually need to check all arguments, but that's complicated + * and mostly only one file is dropped. + * This also ignores wildcards, since it is very unlikely the user is + * editing a file name with a wildcard character. + */ + set_arglist(eap->arg); + + /* + * Expanding wildcards may result in an empty argument list. E.g. when + * editing "foo.pyc" and ".pyc" is in 'wildignore'. Assume that we + * already did an error message for this. + */ + if (ARGCOUNT == 0) + return; + + if (cmdmod.tab) + { + /* ":tab drop file ...": open a tab for each argument that isn't + * edited in a window yet. It's like ":tab all" but without closing + * windows or tabs. */ + ex_all(eap); + } + else + { + /* ":drop file ...": Edit the first argument. Jump to an existing + * window if possible, edit in current window if the current buffer + * can be abandoned, otherwise open a new window. */ + buf = buflist_findnr(ARGLIST[0].ae_fnum); + + FOR_ALL_TAB_WINDOWS(tp, wp) + { + if (wp->w_buffer == buf) + { + goto_tabpage_win(tp, wp); + curwin->w_arg_idx = 0; + return; + } + } + + /* + * Check whether the current buffer is changed. If so, we will need + * to split the current window or data could be lost. + * Skip the check if the 'hidden' option is set, as in this case the + * buffer won't be lost. + */ + if (!buf_hide(curbuf)) + { + ++emsg_off; + split = check_changed(curbuf, CCGD_AW | CCGD_EXCMD); + --emsg_off; + } + + /* Fake a ":sfirst" or ":first" command edit the first argument. */ + if (split) + { + eap->cmdidx = CMD_sfirst; + eap->cmd[0] = 's'; + } + else + eap->cmdidx = CMD_first; + ex_rewind(eap); + } +} + +/* + * Skip over the pattern argument of ":vimgrep /pat/[g][j]". + * Put the start of the pattern in "*s", unless "s" is NULL. + * If "flags" is not NULL put the flags in it: VGR_GLOBAL, VGR_NOJUMP. + * If "s" is not NULL terminate the pattern with a NUL. + * Return a pointer to the char just past the pattern plus flags. + */ + char_u * +skip_vimgrep_pat(char_u *p, char_u **s, int *flags) +{ + int c; + + if (vim_isIDc(*p)) + { + /* ":vimgrep pattern fname" */ + if (s != NULL) + *s = p; + p = skiptowhite(p); + if (s != NULL && *p != NUL) + *p++ = NUL; + } + else + { + /* ":vimgrep /pattern/[g][j] fname" */ + if (s != NULL) + *s = p + 1; + c = *p; + p = skip_regexp(p + 1, c, TRUE, NULL); + if (*p != c) + return NULL; + + /* Truncate the pattern. */ + if (s != NULL) + *p = NUL; + ++p; + + /* Find the flags */ + while (*p == 'g' || *p == 'j') + { + if (flags != NULL) + { + if (*p == 'g') + *flags |= VGR_GLOBAL; + else + *flags |= VGR_NOJUMP; + } + ++p; + } + } + return p; +} + +#if defined(FEAT_EVAL) || defined(PROTO) +/* + * List v:oldfiles in a nice way. + */ + void +ex_oldfiles(exarg_T *eap UNUSED) +{ + list_T *l = get_vim_var_list(VV_OLDFILES); + listitem_T *li; + int nr = 0; + char_u *fname; + + if (l == NULL) + msg(_("No old files")); + else + { + msg_start(); + msg_scroll = TRUE; + for (li = l->lv_first; li != NULL && !got_int; li = li->li_next) + { + ++nr; + fname = tv_get_string(&li->li_tv); + if (!message_filtered(fname)) + { + msg_outnum((long)nr); + msg_puts(": "); + msg_outtrans(fname); + msg_clr_eos(); + msg_putchar('\n'); + out_flush(); /* output one line at a time */ + ui_breakcheck(); + } + } + + /* Assume "got_int" was set to truncate the listing. */ + got_int = FALSE; + +# ifdef FEAT_BROWSE_CMD + if (cmdmod.browse) + { + quit_more = FALSE; + nr = prompt_for_number(FALSE); + msg_starthere(); + if (nr > 0) + { + char_u *p = list_find_str(get_vim_var_list(VV_OLDFILES), + (long)nr); + + if (p != NULL) + { + p = expand_env_save(p); + eap->arg = p; + eap->cmdidx = CMD_edit; + cmdmod.browse = FALSE; + do_exedit(eap, NULL); + vim_free(p); + } + } + } +# endif + } +} +#endif |