/* vi:set ts=8 sts=4 sw=4: * * 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. */ /* * misc2.c: Various functions. */ #include #include "vim.h" #include "misc2.h" #include "file_search.h" #include "blowfish.h" #include "buffer.h" #include "charset.h" #include "diff.h" #include "edit.h" #include "eval.h" #include "ex_cmds.h" #include "ex_docmd.h" #include "ex_getln.h" #include "fileio.h" #include "fold.h" #include "getchar.h" #include "mark.h" #include "mbyte.h" #include "memfile.h" #include "memline.h" #include "memory.h" #include "message.h" #include "misc1.h" #include "move.h" #include "option.h" #include "ops.h" #include "os_unix.h" #include "path.h" #include "quickfix.h" #include "regexp.h" #include "screen.h" #include "search.h" #include "spell.h" #include "syntax.h" #include "tag.h" #include "term.h" #include "ui.h" #include "window.h" #include "os/os.h" #include "os/shell.h" static int coladvance2(pos_T *pos, int addspaces, int finetune, colnr_T wcol); /* * Return TRUE if in the current mode we need to use virtual. */ int virtual_active(void) { /* While an operator is being executed we return "virtual_op", because * VIsual_active has already been reset, thus we can't check for "block" * being used. */ if (virtual_op != MAYBE) return virtual_op; return ve_flags == VE_ALL || ((ve_flags & VE_BLOCK) && VIsual_active && VIsual_mode == Ctrl_V) || ((ve_flags & VE_INSERT) && (State & INSERT)); } /* * Get the screen position of the cursor. */ int getviscol(void) { colnr_T x; getvvcol(curwin, &curwin->w_cursor, &x, NULL, NULL); return (int)x; } /* * Get the screen position of character col with a coladd in the cursor line. */ int getviscol2(colnr_T col, colnr_T coladd) { colnr_T x; pos_T pos; pos.lnum = curwin->w_cursor.lnum; pos.col = col; pos.coladd = coladd; getvvcol(curwin, &pos, &x, NULL, NULL); return (int)x; } /* * Go to column "wcol", and add/insert white space as necessary to get the * cursor in that column. * The caller must have saved the cursor line for undo! */ int coladvance_force(colnr_T wcol) { int rc = coladvance2(&curwin->w_cursor, TRUE, FALSE, wcol); if (wcol == MAXCOL) curwin->w_valid &= ~VALID_VIRTCOL; else { /* Virtcol is valid */ curwin->w_valid |= VALID_VIRTCOL; curwin->w_virtcol = wcol; } return rc; } /* * Try to advance the Cursor to the specified screen column. * If virtual editing: fine tune the cursor position. * Note that all virtual positions off the end of a line should share * a curwin->w_cursor.col value (n.b. this is equal to STRLEN(line)), * beginning at coladd 0. * * return OK if desired column is reached, FAIL if not */ int coladvance(colnr_T wcol) { int rc = getvpos(&curwin->w_cursor, wcol); if (wcol == MAXCOL || rc == FAIL) curwin->w_valid &= ~VALID_VIRTCOL; else if (*ml_get_cursor() != TAB) { /* Virtcol is valid when not on a TAB */ curwin->w_valid |= VALID_VIRTCOL; curwin->w_virtcol = wcol; } return rc; } /* * Return in "pos" the position of the cursor advanced to screen column "wcol". * return OK if desired column is reached, FAIL if not */ int getvpos(pos_T *pos, colnr_T wcol) { return coladvance2(pos, FALSE, virtual_active(), wcol); } static int coladvance2 ( pos_T *pos, int addspaces, /* change the text to achieve our goal? */ int finetune, /* change char offset for the exact column */ colnr_T wcol /* column to move to */ ) { int idx; char_u *ptr; char_u *line; colnr_T col = 0; int csize = 0; int one_more; int head = 0; one_more = (State & INSERT) || restart_edit != NUL || (VIsual_active && *p_sel != 'o') || ((ve_flags & VE_ONEMORE) && wcol < MAXCOL) ; line = ml_get_buf(curbuf, pos->lnum, FALSE); if (wcol >= MAXCOL) { idx = (int)STRLEN(line) - 1 + one_more; col = wcol; if ((addspaces || finetune) && !VIsual_active) { curwin->w_curswant = linetabsize(line) + one_more; if (curwin->w_curswant > 0) --curwin->w_curswant; } } else { int width = W_WIDTH(curwin) - win_col_off(curwin); if (finetune && curwin->w_p_wrap && curwin->w_width != 0 && wcol >= (colnr_T)width) { csize = linetabsize(line); if (csize > 0) csize--; if (wcol / width > (colnr_T)csize / width && ((State & INSERT) == 0 || (int)wcol > csize + 1)) { /* In case of line wrapping don't move the cursor beyond the * right screen edge. In Insert mode allow going just beyond * the last character (like what happens when typing and * reaching the right window edge). */ wcol = (csize / width + 1) * width - 1; } } ptr = line; while (col <= wcol && *ptr != NUL) { /* Count a tab for what it's worth (if list mode not on) */ csize = win_lbr_chartabsize(curwin, ptr, col, &head); mb_ptr_adv(ptr); col += csize; } idx = (int)(ptr - line); /* * Handle all the special cases. The virtual_active() check * is needed to ensure that a virtual position off the end of * a line has the correct indexing. The one_more comparison * replaces an explicit add of one_more later on. */ if (col > wcol || (!virtual_active() && one_more == 0)) { idx -= 1; /* Don't count the chars from 'showbreak'. */ csize -= head; col -= csize; } if (virtual_active() && addspaces && ((col != wcol && col != wcol + 1) || csize > 1)) { /* 'virtualedit' is set: The difference between wcol and col is * filled with spaces. */ if (line[idx] == NUL) { /* Append spaces */ int correct = wcol - col; char_u *newline = alloc(idx + correct + 1); int t; if (newline == NULL) return FAIL; for (t = 0; t < idx; ++t) newline[t] = line[t]; for (t = 0; t < correct; ++t) newline[t + idx] = ' '; newline[idx + correct] = NUL; ml_replace(pos->lnum, newline, FALSE); changed_bytes(pos->lnum, (colnr_T)idx); idx += correct; col = wcol; } else { /* Break a tab */ int linelen = (int)STRLEN(line); int correct = wcol - col - csize + 1; /* negative!! */ char_u *newline; int t, s = 0; int v; if (-correct > csize) return FAIL; newline = alloc(linelen + csize); if (newline == NULL) return FAIL; for (t = 0; t < linelen; t++) { if (t != idx) newline[s++] = line[t]; else for (v = 0; v < csize; v++) newline[s++] = ' '; } newline[linelen + csize - 1] = NUL; ml_replace(pos->lnum, newline, FALSE); changed_bytes(pos->lnum, idx); idx += (csize - 1 + correct); col += correct; } } } if (idx < 0) pos->col = 0; else pos->col = idx; pos->coladd = 0; if (finetune) { if (wcol == MAXCOL) { /* The width of the last character is used to set coladd. */ if (!one_more) { colnr_T scol, ecol; getvcol(curwin, pos, &scol, NULL, &ecol); pos->coladd = ecol - scol; } } else { int b = (int)wcol - (int)col; /* The difference between wcol and col is used to set coladd. */ if (b > 0 && b < (MAXCOL - 2 * W_WIDTH(curwin))) pos->coladd = b; col += b; } } /* prevent from moving onto a trail byte */ if (has_mbyte) mb_adjustpos(curbuf, pos); if (col < wcol) return FAIL; return OK; } /* * Increment the cursor position. See inc() for return values. */ int inc_cursor(void) { return inc(&curwin->w_cursor); } /* * Increment the line pointer "lp" crossing line boundaries as necessary. * Return 1 when going to the next line. * Return 2 when moving forward onto a NUL at the end of the line). * Return -1 when at the end of file. * Return 0 otherwise. */ int inc(pos_T *lp) { char_u *p = ml_get_pos(lp); if (*p != NUL) { /* still within line, move to next char (may be NUL) */ if (has_mbyte) { int l = (*mb_ptr2len)(p); lp->col += l; return (p[l] != NUL) ? 0 : 2; } lp->col++; lp->coladd = 0; return (p[1] != NUL) ? 0 : 2; } if (lp->lnum != curbuf->b_ml.ml_line_count) { /* there is a next line */ lp->col = 0; lp->lnum++; lp->coladd = 0; return 1; } return -1; } /* * incl(lp): same as inc(), but skip the NUL at the end of non-empty lines */ int incl(pos_T *lp) { int r; if ((r = inc(lp)) >= 1 && lp->col) r = inc(lp); return r; } /* * dec(p) * * Decrement the line pointer 'p' crossing line boundaries as necessary. * Return 1 when crossing a line, -1 when at start of file, 0 otherwise. */ int dec_cursor(void) { return dec(&curwin->w_cursor); } int dec(pos_T *lp) { char_u *p; lp->coladd = 0; if (lp->col > 0) { /* still within line */ lp->col--; if (has_mbyte) { p = ml_get(lp->lnum); lp->col -= (*mb_head_off)(p, p + lp->col); } return 0; } if (lp->lnum > 1) { /* there is a prior line */ lp->lnum--; p = ml_get(lp->lnum); lp->col = (colnr_T)STRLEN(p); if (has_mbyte) lp->col -= (*mb_head_off)(p, p + lp->col); return 1; } return -1; /* at start of file */ } /* * decl(lp): same as dec(), but skip the NUL at the end of non-empty lines */ int decl(pos_T *lp) { int r; if ((r = dec(lp)) == 1 && lp->col) r = dec(lp); return r; } /* * Get the line number relative to the current cursor position, i.e. the * difference between line number and cursor position. Only look for lines that * can be visible, folded lines don't count. */ linenr_T get_cursor_rel_lnum ( win_T *wp, linenr_T lnum /* line number to get the result for */ ) { linenr_T cursor = wp->w_cursor.lnum; linenr_T retval = 0; if (hasAnyFolding(wp)) { if (lnum > cursor) { while (lnum > cursor) { (void)hasFoldingWin(wp, lnum, &lnum, NULL, TRUE, NULL); /* if lnum and cursor are in the same fold, * now lnum <= cursor */ if (lnum > cursor) retval++; lnum--; } } else if (lnum < cursor) { while (lnum < cursor) { (void)hasFoldingWin(wp, lnum, NULL, &lnum, TRUE, NULL); /* if lnum and cursor are in the same fold, * now lnum >= cursor */ if (lnum < cursor) retval--; lnum++; } } /* else if (lnum == cursor) * retval = 0; */ } else retval = lnum - cursor; return retval; } /* * Make sure curwin->w_cursor.lnum is valid. */ void check_cursor_lnum(void) { if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count) { /* If there is a closed fold at the end of the file, put the cursor in * its first line. Otherwise in the last line. */ if (!hasFolding(curbuf->b_ml.ml_line_count, &curwin->w_cursor.lnum, NULL)) curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count; } if (curwin->w_cursor.lnum <= 0) curwin->w_cursor.lnum = 1; } /* * Make sure curwin->w_cursor.col is valid. */ void check_cursor_col(void) { check_cursor_col_win(curwin); } /* * Make sure win->w_cursor.col is valid. */ void check_cursor_col_win(win_T *win) { colnr_T len; colnr_T oldcol = win->w_cursor.col; colnr_T oldcoladd = win->w_cursor.col + win->w_cursor.coladd; len = (colnr_T)STRLEN(ml_get_buf(win->w_buffer, win->w_cursor.lnum, FALSE)); if (len == 0) win->w_cursor.col = 0; else if (win->w_cursor.col >= len) { /* Allow cursor past end-of-line when: * - in Insert mode or restarting Insert mode * - in Visual mode and 'selection' isn't "old" * - 'virtualedit' is set */ if ((State & INSERT) || restart_edit || (VIsual_active && *p_sel != 'o') || (ve_flags & VE_ONEMORE) || virtual_active()) win->w_cursor.col = len; else { win->w_cursor.col = len - 1; /* Move the cursor to the head byte. */ if (has_mbyte) mb_adjustpos(win->w_buffer, &win->w_cursor); } } else if (win->w_cursor.col < 0) win->w_cursor.col = 0; /* If virtual editing is on, we can leave the cursor on the old position, * only we must set it to virtual. But don't do it when at the end of the * line. */ if (oldcol == MAXCOL) win->w_cursor.coladd = 0; else if (ve_flags == VE_ALL) { if (oldcoladd > win->w_cursor.col) win->w_cursor.coladd = oldcoladd - win->w_cursor.col; else /* avoid weird number when there is a miscalculation or overflow */ win->w_cursor.coladd = 0; } } /* * make sure curwin->w_cursor in on a valid character */ void check_cursor(void) { check_cursor_lnum(); check_cursor_col(); } /* * Make sure curwin->w_cursor is not on the NUL at the end of the line. * Allow it when in Visual mode and 'selection' is not "old". */ void adjust_cursor_col(void) { if (curwin->w_cursor.col > 0 && (!VIsual_active || *p_sel == 'o') && gchar_cursor() == NUL) --curwin->w_cursor.col; } /* * When curwin->w_leftcol has changed, adjust the cursor position. * Return TRUE if the cursor was moved. */ int leftcol_changed(void) { long lastcol; colnr_T s, e; int retval = FALSE; changed_cline_bef_curs(); lastcol = curwin->w_leftcol + W_WIDTH(curwin) - curwin_col_off() - 1; validate_virtcol(); /* * If the cursor is right or left of the screen, move it to last or first * character. */ if (curwin->w_virtcol > (colnr_T)(lastcol - p_siso)) { retval = TRUE; coladvance((colnr_T)(lastcol - p_siso)); } else if (curwin->w_virtcol < curwin->w_leftcol + p_siso) { retval = TRUE; (void)coladvance((colnr_T)(curwin->w_leftcol + p_siso)); } /* * If the start of the character under the cursor is not on the screen, * advance the cursor one more char. If this fails (last char of the * line) adjust the scrolling. */ getvvcol(curwin, &curwin->w_cursor, &s, NULL, &e); if (e > (colnr_T)lastcol) { retval = TRUE; coladvance(s - 1); } else if (s < curwin->w_leftcol) { retval = TRUE; if (coladvance(e + 1) == FAIL) { /* there isn't another character */ curwin->w_leftcol = s; /* adjust w_leftcol instead */ changed_cline_bef_curs(); } } if (retval) curwin->w_set_curswant = TRUE; redraw_later(NOT_VALID); return retval; } /* * Copy "string" into newly allocated memory. */ char_u *vim_strsave(char_u *string) { char_u *p; unsigned len; len = (unsigned)STRLEN(string) + 1; p = alloc(len); if (p != NULL) memmove(p, string, (size_t)len); return p; } /* * Copy up to "len" bytes of "string" into newly allocated memory and * terminate with a NUL. * The allocated memory always has size "len + 1", also when "string" is * shorter. */ char_u *vim_strnsave(char_u *string, int len) { char_u *p; p = alloc((unsigned)(len + 1)); if (p != NULL) { STRNCPY(p, string, len); p[len] = NUL; } return p; } /* * Same as vim_strsave(), but any characters found in esc_chars are preceded * by a backslash. */ char_u *vim_strsave_escaped(char_u *string, char_u *esc_chars) { return vim_strsave_escaped_ext(string, esc_chars, '\\', FALSE); } /* * Same as vim_strsave_escaped(), but when "bsl" is TRUE also escape * characters where rem_backslash() would remove the backslash. * Escape the characters with "cc". */ char_u *vim_strsave_escaped_ext(char_u *string, char_u *esc_chars, int cc, int bsl) { char_u *p; char_u *p2; char_u *escaped_string; unsigned length; int l; /* * First count the number of backslashes required. * Then allocate the memory and insert them. */ length = 1; /* count the trailing NUL */ for (p = string; *p; p++) { if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) { length += l; /* count a multibyte char */ p += l - 1; continue; } if (vim_strchr(esc_chars, *p) != NULL || (bsl && rem_backslash(p))) ++length; /* count a backslash */ ++length; /* count an ordinary char */ } escaped_string = alloc(length); if (escaped_string != NULL) { p2 = escaped_string; for (p = string; *p; p++) { if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) { memmove(p2, p, (size_t)l); p2 += l; p += l - 1; /* skip multibyte char */ continue; } if (vim_strchr(esc_chars, *p) != NULL || (bsl && rem_backslash(p))) *p2++ = cc; *p2++ = *p; } *p2 = NUL; } return escaped_string; } /* * Return TRUE when 'shell' has "csh" in the tail. */ int csh_like_shell(void) { return strstr((char *)path_tail(p_sh), "csh") != NULL; } /* * Escape "string" for use as a shell argument with system(). * This uses single quotes, except when we know we need to use double quotes * (MS-DOS and MS-Windows without 'shellslash' set). * Escape a newline, depending on the 'shell' option. * When "do_special" is TRUE also replace "!", "%", "#" and things starting * with "<" like "". * Returns the result in allocated memory, NULL if we have run out. */ char_u *vim_strsave_shellescape(char_u *string, int do_special) { unsigned length; char_u *p; char_u *d; char_u *escaped_string; int l; int csh_like; /* Only csh and similar shells expand '!' within single quotes. For sh and * the like we must not put a backslash before it, it will be taken * literally. If do_special is set the '!' will be escaped twice. * Csh also needs to have "\n" escaped twice when do_special is set. */ csh_like = csh_like_shell(); /* First count the number of extra bytes required. */ length = (unsigned)STRLEN(string) + 3; /* two quotes and a trailing NUL */ for (p = string; *p != NUL; mb_ptr_adv(p)) { if (*p == '\'') length += 3; /* ' => '\'' */ if (*p == '\n' || (*p == '!' && (csh_like || do_special))) { ++length; /* insert backslash */ if (csh_like && do_special) ++length; /* insert backslash */ } if (do_special && find_cmdline_var(p, &l) >= 0) { ++length; /* insert backslash */ p += l - 1; } } /* Allocate memory for the result and fill it. */ escaped_string = alloc(length); if (escaped_string != NULL) { d = escaped_string; /* add opening quote */ *d++ = '\''; for (p = string; *p != NUL; ) { if (*p == '\'') { *d++ = '\''; *d++ = '\\'; *d++ = '\''; *d++ = '\''; ++p; continue; } if (*p == '\n' || (*p == '!' && (csh_like || do_special))) { *d++ = '\\'; if (csh_like && do_special) *d++ = '\\'; *d++ = *p++; continue; } if (do_special && find_cmdline_var(p, &l) >= 0) { *d++ = '\\'; /* insert backslash */ while (--l >= 0) /* copy the var */ *d++ = *p++; continue; } MB_COPY_CHAR(p, d); } /* add terminating quote and finish with a NUL */ *d++ = '\''; *d = NUL; } return escaped_string; } /* * Like vim_strsave(), but make all characters uppercase. * This uses ASCII lower-to-upper case translation, language independent. */ char_u *vim_strsave_up(char_u *string) { char_u *p1; p1 = vim_strsave(string); vim_strup(p1); return p1; } /* * Like vim_strnsave(), but make all characters uppercase. * This uses ASCII lower-to-upper case translation, language independent. */ char_u *vim_strnsave_up(char_u *string, int len) { char_u *p1; p1 = vim_strnsave(string, len); vim_strup(p1); return p1; } /* * ASCII lower-to-upper case translation, language independent. */ void vim_strup(char_u *p) { char_u *p2; int c; if (p != NULL) { p2 = p; while ((c = *p2) != NUL) *p2++ = (c < 'a' || c > 'z') ? c : (c - 0x20); } } /* * Make string "s" all upper-case and return it in allocated memory. * Handles multi-byte characters as well as possible. * Returns NULL when out of memory. */ char_u *strup_save(char_u *orig) { char_u *p; char_u *res; res = p = vim_strsave(orig); if (res != NULL) while (*p != NUL) { int l; if (enc_utf8) { int c, uc; int newl; char_u *s; c = utf_ptr2char(p); uc = utf_toupper(c); /* Reallocate string when byte count changes. This is rare, * thus it's OK to do another malloc()/free(). */ l = utf_ptr2len(p); newl = utf_char2len(uc); if (newl != l) { s = alloc((unsigned)STRLEN(res) + 1 + newl - l); if (s == NULL) break; memmove(s, res, p - res); STRCPY(s + (p - res) + newl, p + l); p = s + (p - res); vim_free(res); res = s; } utf_char2bytes(uc, p); p += newl; } else if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) p += l; /* skip multi-byte character */ else { *p = TOUPPER_LOC(*p); /* note that toupper() can be a macro */ p++; } } return res; } /* * copy a space a number of times */ void copy_spaces(char_u *ptr, size_t count) { size_t i = count; char_u *p = ptr; while (i--) *p++ = ' '; } /* * Copy a character a number of times. * Does not work for multi-byte characters! */ void copy_chars(char_u *ptr, size_t count, int c) { size_t i = count; char_u *p = ptr; while (i--) *p++ = c; } /* * delete spaces at the end of a string */ void del_trailing_spaces(char_u *ptr) { char_u *q; q = ptr + STRLEN(ptr); while (--q > ptr && vim_iswhite(q[0]) && q[-1] != '\\' && q[-1] != Ctrl_V) *q = NUL; } /* * Like strncpy(), but always terminate the result with one NUL. * "to" must be "len + 1" long! */ void vim_strncpy(char_u *to, char_u *from, size_t len) { STRNCPY(to, from, len); to[len] = NUL; } /* * Like strcat(), but make sure the result fits in "tosize" bytes and is * always NUL terminated. */ void vim_strcat(char_u *to, char_u *from, size_t tosize) { size_t tolen = STRLEN(to); size_t fromlen = STRLEN(from); if (tolen + fromlen + 1 > tosize) { memmove(to + tolen, from, tosize - tolen - 1); to[tosize - 1] = NUL; } else STRCPY(to + tolen, from); } /* * Isolate one part of a string option where parts are separated with * "sep_chars". * The part is copied into "buf[maxlen]". * "*option" is advanced to the next part. * The length is returned. */ int copy_option_part(char_u **option, char_u *buf, int maxlen, char *sep_chars) { int len = 0; char_u *p = *option; /* skip '.' at start of option part, for 'suffixes' */ if (*p == '.') buf[len++] = *p++; while (*p != NUL && vim_strchr((char_u *)sep_chars, *p) == NULL) { /* * Skip backslash before a separator character and space. */ if (p[0] == '\\' && vim_strchr((char_u *)sep_chars, p[1]) != NULL) ++p; if (len < maxlen - 1) buf[len++] = *p; ++p; } buf[len] = NUL; if (*p != NUL && *p != ',') /* skip non-standard separator */ ++p; p = skip_to_option_part(p); /* p points to next file name */ *option = p; return len; } /* * Replacement for free() that ignores NULL pointers. * Also skip free() when exiting for sure, this helps when we caught a deadly * signal that was caused by a crash in free(). */ void vim_free(void *x) { if (x != NULL && !really_exiting) { free(x); } } #if (!defined(HAVE_STRCASECMP) && !defined(HAVE_STRICMP)) || defined(PROTO) /* * Compare two strings, ignoring case, using current locale. * Doesn't work for multi-byte characters. * return 0 for match, < 0 for smaller, > 0 for bigger */ int vim_stricmp(char *s1, char *s2) { int i; for (;; ) { i = (int)TOLOWER_LOC(*s1) - (int)TOLOWER_LOC(*s2); if (i != 0) return i; /* this character different */ if (*s1 == NUL) break; /* strings match until NUL */ ++s1; ++s2; } return 0; /* strings match */ } #endif #if (!defined(HAVE_STRNCASECMP) && !defined(HAVE_STRNICMP)) || defined(PROTO) /* * Compare two strings, for length "len", ignoring case, using current locale. * Doesn't work for multi-byte characters. * return 0 for match, < 0 for smaller, > 0 for bigger */ int vim_strnicmp(char *s1, char *s2, size_t len) { int i; while (len > 0) { i = (int)TOLOWER_LOC(*s1) - (int)TOLOWER_LOC(*s2); if (i != 0) return i; /* this character different */ if (*s1 == NUL) break; /* strings match until NUL */ ++s1; ++s2; --len; } return 0; /* strings match */ } #endif /* * Version of strchr() and strrchr() that handle unsigned char strings * with characters from 128 to 255 correctly. It also doesn't return a * pointer to the NUL at the end of the string. */ char_u *vim_strchr(char_u *string, int c) { char_u *p; int b; p = string; if (enc_utf8 && c >= 0x80) { while (*p != NUL) { if (utf_ptr2char(p) == c) return p; p += (*mb_ptr2len)(p); } return NULL; } if (enc_dbcs != 0 && c > 255) { int n2 = c & 0xff; c = ((unsigned)c >> 8) & 0xff; while ((b = *p) != NUL) { if (b == c && p[1] == n2) return p; p += (*mb_ptr2len)(p); } return NULL; } if (has_mbyte) { while ((b = *p) != NUL) { if (b == c) return p; p += (*mb_ptr2len)(p); } return NULL; } while ((b = *p) != NUL) { if (b == c) return p; ++p; } return NULL; } /* * Version of strchr() that only works for bytes and handles unsigned char * strings with characters above 128 correctly. It also doesn't return a * pointer to the NUL at the end of the string. */ char_u *vim_strbyte(char_u *string, int c) { char_u *p = string; while (*p != NUL) { if (*p == c) return p; ++p; } return NULL; } /* * Search for last occurrence of "c" in "string". * Return NULL if not found. * Does not handle multi-byte char for "c"! */ char_u *vim_strrchr(char_u *string, int c) { char_u *retval = NULL; char_u *p = string; while (*p) { if (*p == c) retval = p; mb_ptr_adv(p); } return retval; } /* * Vim has its own isspace() function, because on some machines isspace() * can't handle characters above 128. */ int vim_isspace(int x) { return (x >= 9 && x <= 13) || x == ' '; } /* * Return the current end-of-line type: EOL_DOS, EOL_UNIX or EOL_MAC. */ int get_fileformat(buf_T *buf) { int c = *buf->b_p_ff; if (buf->b_p_bin || c == 'u') return EOL_UNIX; if (c == 'm') return EOL_MAC; return EOL_DOS; } /* * Like get_fileformat(), but override 'fileformat' with "p" for "++opt=val" * argument. */ int get_fileformat_force ( buf_T *buf, exarg_T *eap /* can be NULL! */ ) { int c; if (eap != NULL && eap->force_ff != 0) c = eap->cmd[eap->force_ff]; else { if ((eap != NULL && eap->force_bin != 0) ? (eap->force_bin == FORCE_BIN) : buf->b_p_bin) return EOL_UNIX; c = *buf->b_p_ff; } if (c == 'u') return EOL_UNIX; if (c == 'm') return EOL_MAC; return EOL_DOS; } /* * Set the current end-of-line type to EOL_DOS, EOL_UNIX or EOL_MAC. * Sets both 'textmode' and 'fileformat'. * Note: Does _not_ set global value of 'textmode'! */ void set_fileformat ( int t, int opt_flags /* OPT_LOCAL and/or OPT_GLOBAL */ ) { char *p = NULL; switch (t) { case EOL_DOS: p = FF_DOS; curbuf->b_p_tx = TRUE; break; case EOL_UNIX: p = FF_UNIX; curbuf->b_p_tx = FALSE; break; case EOL_MAC: p = FF_MAC; curbuf->b_p_tx = FALSE; break; } if (p != NULL) set_string_option_direct((char_u *)"ff", -1, (char_u *)p, OPT_FREE | opt_flags, 0); /* This may cause the buffer to become (un)modified. */ check_status(curbuf); redraw_tabline = TRUE; need_maketitle = TRUE; /* set window title later */ } /* * Return the default fileformat from 'fileformats'. */ int default_fileformat(void) { switch (*p_ffs) { case 'm': return EOL_MAC; case 'd': return EOL_DOS; } return EOL_UNIX; } /* * Call shell. Calls mch_call_shell, with 'shellxquote' added. */ int call_shell(char_u *cmd, ShellOpts opts, char_u *extra_shell_arg) { char_u *ncmd; int retval; proftime_T wait_time; if (p_verbose > 3) { verbose_enter(); smsg((char_u *)_("Calling shell to execute: \"%s\""), cmd == NULL ? p_sh : cmd); out_char('\n'); cursor_on(); verbose_leave(); } if (do_profiling == PROF_YES) prof_child_enter(&wait_time); if (*p_sh == NUL) { EMSG(_(e_shellempty)); retval = -1; } else { /* The external command may update a tags file, clear cached tags. */ tag_freematch(); if (cmd == NULL || *p_sxq == NUL) retval = os_call_shell(cmd, opts, extra_shell_arg); else { char_u *ecmd = cmd; if (*p_sxe != NUL && STRCMP(p_sxq, "(") == 0) { ecmd = vim_strsave_escaped_ext(cmd, p_sxe, '^', FALSE); if (ecmd == NULL) ecmd = cmd; } ncmd = alloc((unsigned)(STRLEN(ecmd) + STRLEN(p_sxq) * 2 + 1)); if (ncmd != NULL) { STRCPY(ncmd, p_sxq); STRCAT(ncmd, ecmd); /* When 'shellxquote' is ( append ). * When 'shellxquote' is "( append )". */ STRCAT(ncmd, STRCMP(p_sxq, "(") == 0 ? (char_u *)")" : STRCMP(p_sxq, "\"(") == 0 ? (char_u *)")\"" : p_sxq); retval = os_call_shell(ncmd, opts, extra_shell_arg); vim_free(ncmd); } else retval = -1; if (ecmd != cmd) vim_free(ecmd); } /* * Check the window size, in case it changed while executing the * external command. */ shell_resized_check(); } set_vim_var_nr(VV_SHELL_ERROR, (long)retval); if (do_profiling == PROF_YES) prof_child_exit(&wait_time); return retval; } /* * VISUAL, SELECTMODE and OP_PENDING State are never set, they are equal to * NORMAL State with a condition. This function returns the real State. */ int get_real_state(void) { if (State & NORMAL) { if (VIsual_active) { if (VIsual_select) return SELECTMODE; return VISUAL; } else if (finish_op) return OP_PENDING; } return State; } #if defined(FEAT_SESSION) || defined(MSWIN) || defined(FEAT_GUI_MAC) \ || ((defined(FEAT_GUI_GTK)) \ && ( defined(FEAT_WINDOWS) || defined(FEAT_DND)) ) \ || defined(PROTO) /* * Change to a file's directory. * Caller must call shorten_fnames()! * Return OK or FAIL. */ int vim_chdirfile(char_u *fname) { char_u dir[MAXPATHL]; vim_strncpy(dir, fname, MAXPATHL - 1); *path_tail_with_sep(dir) = NUL; return os_chdir((char *)dir) == 0 ? OK : FAIL; } #endif #if defined(STAT_IGNORES_SLASH) || defined(PROTO) /* * Check if "name" ends in a slash and is not a directory. * Used for systems where stat() ignores a trailing slash on a file name. * The Vim code assumes a trailing slash is only ignored for a directory. */ int illegal_slash(char *name) { if (name[0] == NUL) return FALSE; /* no file name is not illegal */ if (name[strlen(name) - 1] != '/') return FALSE; /* no trailing slash */ if (os_isdir((char_u *)name)) return FALSE; /* trailing slash for a directory */ return TRUE; } #endif /* * Change directory to "new_dir". If FEAT_SEARCHPATH is defined, search * 'cdpath' for relative directory names, otherwise just os_chdir(). */ int vim_chdir(char_u *new_dir) { char_u *dir_name; int r; dir_name = find_directory_in_path(new_dir, (int)STRLEN(new_dir), FNAME_MESS, curbuf->b_ffname); if (dir_name == NULL) return -1; r = os_chdir((char *)dir_name); vim_free(dir_name); return r; } /* * Sort an array of strings. */ static int sort_compare(const void *s1, const void *s2); static int sort_compare(const void *s1, const void *s2) { return STRCMP(*(char **)s1, *(char **)s2); } void sort_strings(char_u **files, int count) { qsort((void *)files, (size_t)count, sizeof(char_u *), sort_compare); } /* * Print an error message with one or two "%s" and one or two string arguments. * This is not in message.c to avoid a warning for prototypes. */ int emsg3(char_u *s, char_u *a1, char_u *a2) { if (emsg_not_now()) return TRUE; /* no error messages at the moment */ vim_snprintf((char *)IObuff, IOSIZE, (char *)s, a1, a2); return emsg(IObuff); } /* * Print an error message with one "%ld" and one long int argument. * This is not in message.c to avoid a warning for prototypes. */ int emsgn(char_u *s, long n) { if (emsg_not_now()) return TRUE; /* no error messages at the moment */ vim_snprintf((char *)IObuff, IOSIZE, (char *)s, n); return emsg(IObuff); } /* * Read 2 bytes from "fd" and turn them into an int, MSB first. */ int get2c(FILE *fd) { int n; n = getc(fd); n = (n << 8) + getc(fd); return n; } /* * Read 3 bytes from "fd" and turn them into an int, MSB first. */ int get3c(FILE *fd) { int n; n = getc(fd); n = (n << 8) + getc(fd); n = (n << 8) + getc(fd); return n; } /* * Read 4 bytes from "fd" and turn them into an int, MSB first. */ int get4c(FILE *fd) { /* Use unsigned rather than int otherwise result is undefined * when left-shift sets the MSB. */ unsigned n; n = (unsigned)getc(fd); n = (n << 8) + (unsigned)getc(fd); n = (n << 8) + (unsigned)getc(fd); n = (n << 8) + (unsigned)getc(fd); return (int)n; } /* * Read 8 bytes from "fd" and turn them into a time_t, MSB first. */ time_t get8ctime(FILE *fd) { time_t n = 0; int i; for (i = 0; i < 8; ++i) n = (n << 8) + getc(fd); return n; } /* * Read a string of length "cnt" from "fd" into allocated memory. * Returns NULL when out of memory or unable to read that many bytes. */ char_u *read_string(FILE *fd, int cnt) { char_u *str; int i; int c; /* allocate memory */ str = alloc((unsigned)cnt + 1); if (str != NULL) { /* Read the string. Quit when running into the EOF. */ for (i = 0; i < cnt; ++i) { c = getc(fd); if (c == EOF) { vim_free(str); return NULL; } str[i] = c; } str[i] = NUL; } return str; } /* * Write a number to file "fd", MSB first, in "len" bytes. */ int put_bytes(FILE *fd, long_u nr, int len) { int i; for (i = len - 1; i >= 0; --i) if (putc((int)(nr >> (i * 8)), fd) == EOF) return FAIL; return OK; } /* * Write time_t to file "fd" in 8 bytes. */ void put_time(FILE *fd, time_t the_time) { int c; int i; time_t wtime = the_time; /* time_t can be up to 8 bytes in size, more than long_u, thus we * can't use put_bytes() here. * Another problem is that ">>" may do an arithmetic shift that keeps the * sign. This happens for large values of wtime. A cast to long_u may * truncate if time_t is 8 bytes. So only use a cast when it is 4 bytes, * it's safe to assume that long_u is 4 bytes or more and when using 8 * bytes the top bit won't be set. */ for (i = 7; i >= 0; --i) { if (i + 1 > (int)sizeof(time_t)) /* ">>" doesn't work well when shifting more bits than avail */ putc(0, fd); else { #if defined(SIZEOF_TIME_T) && SIZEOF_TIME_T > 4 c = (int)(wtime >> (i * 8)); #else c = (int)((long_u)wtime >> (i * 8)); #endif putc(c, fd); } } } #if (defined(FEAT_MBYTE) && defined(FEAT_QUICKFIX)) \ || defined(FEAT_SPELL) || defined(PROTO) /* * Return TRUE if string "s" contains a non-ASCII character (128 or higher). * When "s" is NULL FALSE is returned. */ int has_non_ascii(char_u *s) { char_u *p; if (s != NULL) for (p = s; *p != NUL; ++p) if (*p >= 128) return TRUE; return FALSE; } #endif