Mercurial > vim
view src/cmdexpand.c @ 19219:89931701e033 v8.2.0168
patch 8.2.0168: Coverity warning for assigning NULL to an option
Commit: https://github.com/vim/vim/commit/97a2af39cd3249c6cbe5a5c59bc24167632d39ad
Author: Bram Moolenaar <Bram@vim.org>
Date: Tue Jan 28 22:52:48 2020 +0100
patch 8.2.0168: Coverity warning for assigning NULL to an option
Problem: Coverity warning for assigning NULL to an option.
Solution: Use empty string instead of NULL.
author | Bram Moolenaar <Bram@vim.org> |
---|---|
date | Tue, 28 Jan 2020 23:00:04 +0100 |
parents | 568cce19fd2b |
children | ff5048b0ccfe |
line wrap: on
line source
/* 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. */ /* * cmdexpand.c: functions for command-line completion */ #include "vim.h" static int cmd_showtail; // Only show path tail in lists ? static void set_expand_context(expand_T *xp); static int ExpandGeneric(expand_T *xp, regmatch_T *regmatch, int *num_file, char_u ***file, char_u *((*func)(expand_T *, int)), int escaped); static int ExpandFromContext(expand_T *xp, char_u *, int *, char_u ***, int); static int expand_showtail(expand_T *xp); static int expand_shellcmd(char_u *filepat, int *num_file, char_u ***file, int flagsarg); #if defined(FEAT_EVAL) static int ExpandUserDefined(expand_T *xp, regmatch_T *regmatch, int *num_file, char_u ***file); static int ExpandUserList(expand_T *xp, int *num_file, char_u ***file); #endif static int sort_func_compare(const void *s1, const void *s2) { char_u *p1 = *(char_u **)s1; char_u *p2 = *(char_u **)s2; if (*p1 != '<' && *p2 == '<') return -1; if (*p1 == '<' && *p2 != '<') return 1; return STRCMP(p1, p2); } static void ExpandEscape( expand_T *xp, char_u *str, int numfiles, char_u **files, int options) { int i; char_u *p; // May change home directory back to "~" if (options & WILD_HOME_REPLACE) tilde_replace(str, numfiles, files); if (options & WILD_ESCAPE) { if (xp->xp_context == EXPAND_FILES || xp->xp_context == EXPAND_FILES_IN_PATH || xp->xp_context == EXPAND_SHELLCMD || xp->xp_context == EXPAND_BUFFERS || xp->xp_context == EXPAND_DIRECTORIES) { // Insert a backslash into a file name before a space, \, %, # // and wildmatch characters, except '~'. for (i = 0; i < numfiles; ++i) { // for ":set path=" we need to escape spaces twice if (xp->xp_backslash == XP_BS_THREE) { p = vim_strsave_escaped(files[i], (char_u *)" "); if (p != NULL) { vim_free(files[i]); files[i] = p; #if defined(BACKSLASH_IN_FILENAME) p = vim_strsave_escaped(files[i], (char_u *)" "); if (p != NULL) { vim_free(files[i]); files[i] = p; } #endif } } #ifdef BACKSLASH_IN_FILENAME p = vim_strsave_fnameescape(files[i], FALSE); #else p = vim_strsave_fnameescape(files[i], xp->xp_shell); #endif if (p != NULL) { vim_free(files[i]); files[i] = p; } // If 'str' starts with "\~", replace "~" at start of // files[i] with "\~". if (str[0] == '\\' && str[1] == '~' && files[i][0] == '~') escape_fname(&files[i]); } xp->xp_backslash = XP_BS_NONE; // If the first file starts with a '+' escape it. Otherwise it // could be seen as "+cmd". if (*files[0] == '+') escape_fname(&files[0]); } else if (xp->xp_context == EXPAND_TAGS) { // Insert a backslash before characters in a tag name that // would terminate the ":tag" command. for (i = 0; i < numfiles; ++i) { p = vim_strsave_escaped(files[i], (char_u *)"\\|\""); if (p != NULL) { vim_free(files[i]); files[i] = p; } } } } } /* * Return FAIL if this is not an appropriate context in which to do * completion of anything, return OK if it is (even if there are no matches). * For the caller, this means that the character is just passed through like a * normal character (instead of being expanded). This allows :s/^I^D etc. */ int nextwild( expand_T *xp, int type, int options, // extra options for ExpandOne() int escape) // if TRUE, escape the returned matches { cmdline_info_T *ccline = get_cmdline_info(); int i, j; char_u *p1; char_u *p2; int difflen; int v; if (xp->xp_numfiles == -1) { set_expand_context(xp); cmd_showtail = expand_showtail(xp); } if (xp->xp_context == EXPAND_UNSUCCESSFUL) { beep_flush(); return OK; // Something illegal on command line } if (xp->xp_context == EXPAND_NOTHING) { // Caller can use the character as a normal char instead return FAIL; } msg_puts("..."); // show that we are busy out_flush(); i = (int)(xp->xp_pattern - ccline->cmdbuff); xp->xp_pattern_len = ccline->cmdpos - i; if (type == WILD_NEXT || type == WILD_PREV) { // Get next/previous match for a previous expanded pattern. p2 = ExpandOne(xp, NULL, NULL, 0, type); } else { // Translate string into pattern and expand it. if ((p1 = addstar(xp->xp_pattern, xp->xp_pattern_len, xp->xp_context)) == NULL) p2 = NULL; else { int use_options = options | WILD_HOME_REPLACE|WILD_ADD_SLASH|WILD_SILENT; if (escape) use_options |= WILD_ESCAPE; if (p_wic) use_options += WILD_ICASE; p2 = ExpandOne(xp, p1, vim_strnsave(&ccline->cmdbuff[i], xp->xp_pattern_len), use_options, type); vim_free(p1); // longest match: make sure it is not shorter, happens with :help if (p2 != NULL && type == WILD_LONGEST) { for (j = 0; j < xp->xp_pattern_len; ++j) if (ccline->cmdbuff[i + j] == '*' || ccline->cmdbuff[i + j] == '?') break; if ((int)STRLEN(p2) < j) VIM_CLEAR(p2); } } } if (p2 != NULL && !got_int) { difflen = (int)STRLEN(p2) - xp->xp_pattern_len; if (ccline->cmdlen + difflen + 4 > ccline->cmdbufflen) { v = realloc_cmdbuff(ccline->cmdlen + difflen + 4); xp->xp_pattern = ccline->cmdbuff + i; } else v = OK; if (v == OK) { mch_memmove(&ccline->cmdbuff[ccline->cmdpos + difflen], &ccline->cmdbuff[ccline->cmdpos], (size_t)(ccline->cmdlen - ccline->cmdpos + 1)); mch_memmove(&ccline->cmdbuff[i], p2, STRLEN(p2)); ccline->cmdlen += difflen; ccline->cmdpos += difflen; } } vim_free(p2); redrawcmd(); cursorcmd(); // When expanding a ":map" command and no matches are found, assume that // the key is supposed to be inserted literally if (xp->xp_context == EXPAND_MAPPINGS && p2 == NULL) return FAIL; if (xp->xp_numfiles <= 0 && p2 == NULL) beep_flush(); else if (xp->xp_numfiles == 1) // free expanded pattern (void)ExpandOne(xp, NULL, NULL, 0, WILD_FREE); return OK; } /* * Do wildcard expansion on the string 'str'. * Chars that should not be expanded must be preceded with a backslash. * Return a pointer to allocated memory containing the new string. * Return NULL for failure. * * "orig" is the originally expanded string, copied to allocated memory. It * should either be kept in orig_save or freed. When "mode" is WILD_NEXT or * WILD_PREV "orig" should be NULL. * * Results are cached in xp->xp_files and xp->xp_numfiles, except when "mode" * is WILD_EXPAND_FREE or WILD_ALL. * * mode = WILD_FREE: just free previously expanded matches * mode = WILD_EXPAND_FREE: normal expansion, do not keep matches * mode = WILD_EXPAND_KEEP: normal expansion, keep matches * mode = WILD_NEXT: use next match in multiple match, wrap to first * mode = WILD_PREV: use previous match in multiple match, wrap to first * mode = WILD_ALL: return all matches concatenated * mode = WILD_LONGEST: return longest matched part * mode = WILD_ALL_KEEP: get all matches, keep matches * * options = WILD_LIST_NOTFOUND: list entries without a match * options = WILD_HOME_REPLACE: do home_replace() for buffer names * options = WILD_USE_NL: Use '\n' for WILD_ALL * options = WILD_NO_BEEP: Don't beep for multiple matches * options = WILD_ADD_SLASH: add a slash after directory names * options = WILD_KEEP_ALL: don't remove 'wildignore' entries * options = WILD_SILENT: don't print warning messages * options = WILD_ESCAPE: put backslash before special chars * options = WILD_ICASE: ignore case for files * * The variables xp->xp_context and xp->xp_backslash must have been set! */ char_u * ExpandOne( expand_T *xp, char_u *str, char_u *orig, // allocated copy of original of expanded string int options, int mode) { char_u *ss = NULL; static int findex; static char_u *orig_save = NULL; // kept value of orig int orig_saved = FALSE; int i; long_u len; int non_suf_match; // number without matching suffix // first handle the case of using an old match if (mode == WILD_NEXT || mode == WILD_PREV) { if (xp->xp_numfiles > 0) { if (mode == WILD_PREV) { if (findex == -1) findex = xp->xp_numfiles; --findex; } else // mode == WILD_NEXT ++findex; // When wrapping around, return the original string, set findex to // -1. if (findex < 0) { if (orig_save == NULL) findex = xp->xp_numfiles - 1; else findex = -1; } if (findex >= xp->xp_numfiles) { if (orig_save == NULL) findex = 0; else findex = -1; } #ifdef FEAT_WILDMENU if (p_wmnu) win_redr_status_matches(xp, xp->xp_numfiles, xp->xp_files, findex, cmd_showtail); #endif if (findex == -1) return vim_strsave(orig_save); return vim_strsave(xp->xp_files[findex]); } else return NULL; } // free old names if (xp->xp_numfiles != -1 && mode != WILD_ALL && mode != WILD_LONGEST) { FreeWild(xp->xp_numfiles, xp->xp_files); xp->xp_numfiles = -1; VIM_CLEAR(orig_save); } findex = 0; if (mode == WILD_FREE) // only release file name return NULL; if (xp->xp_numfiles == -1) { vim_free(orig_save); orig_save = orig; orig_saved = TRUE; // Do the expansion. if (ExpandFromContext(xp, str, &xp->xp_numfiles, &xp->xp_files, options) == FAIL) { #ifdef FNAME_ILLEGAL // Illegal file name has been silently skipped. But when there // are wildcards, the real problem is that there was no match, // causing the pattern to be added, which has illegal characters. if (!(options & WILD_SILENT) && (options & WILD_LIST_NOTFOUND)) semsg(_(e_nomatch2), str); #endif } else if (xp->xp_numfiles == 0) { if (!(options & WILD_SILENT)) semsg(_(e_nomatch2), str); } else { // Escape the matches for use on the command line. ExpandEscape(xp, str, xp->xp_numfiles, xp->xp_files, options); // Check for matching suffixes in file names. if (mode != WILD_ALL && mode != WILD_ALL_KEEP && mode != WILD_LONGEST) { if (xp->xp_numfiles) non_suf_match = xp->xp_numfiles; else non_suf_match = 1; if ((xp->xp_context == EXPAND_FILES || xp->xp_context == EXPAND_DIRECTORIES) && xp->xp_numfiles > 1) { // More than one match; check suffix. // The files will have been sorted on matching suffix in // expand_wildcards, only need to check the first two. non_suf_match = 0; for (i = 0; i < 2; ++i) if (match_suffix(xp->xp_files[i])) ++non_suf_match; } if (non_suf_match != 1) { // Can we ever get here unless it's while expanding // interactively? If not, we can get rid of this all // together. Don't really want to wait for this message // (and possibly have to hit return to continue!). if (!(options & WILD_SILENT)) emsg(_(e_toomany)); else if (!(options & WILD_NO_BEEP)) beep_flush(); } if (!(non_suf_match != 1 && mode == WILD_EXPAND_FREE)) ss = vim_strsave(xp->xp_files[0]); } } } // Find longest common part if (mode == WILD_LONGEST && xp->xp_numfiles > 0) { int mb_len = 1; int c0, ci; for (len = 0; xp->xp_files[0][len]; len += mb_len) { if (has_mbyte) { mb_len = (*mb_ptr2len)(&xp->xp_files[0][len]); c0 =(* mb_ptr2char)(&xp->xp_files[0][len]); } else c0 = xp->xp_files[0][len]; for (i = 1; i < xp->xp_numfiles; ++i) { if (has_mbyte) ci =(* mb_ptr2char)(&xp->xp_files[i][len]); else ci = xp->xp_files[i][len]; if (p_fic && (xp->xp_context == EXPAND_DIRECTORIES || xp->xp_context == EXPAND_FILES || xp->xp_context == EXPAND_SHELLCMD || xp->xp_context == EXPAND_BUFFERS)) { if (MB_TOLOWER(c0) != MB_TOLOWER(ci)) break; } else if (c0 != ci) break; } if (i < xp->xp_numfiles) { if (!(options & WILD_NO_BEEP)) vim_beep(BO_WILD); break; } } ss = alloc(len + 1); if (ss) vim_strncpy(ss, xp->xp_files[0], (size_t)len); findex = -1; // next p_wc gets first one } // Concatenate all matching names if (mode == WILD_ALL && xp->xp_numfiles > 0) { len = 0; for (i = 0; i < xp->xp_numfiles; ++i) len += (long_u)STRLEN(xp->xp_files[i]) + 1; ss = alloc(len); if (ss != NULL) { *ss = NUL; for (i = 0; i < xp->xp_numfiles; ++i) { STRCAT(ss, xp->xp_files[i]); if (i != xp->xp_numfiles - 1) STRCAT(ss, (options & WILD_USE_NL) ? "\n" : " "); } } } if (mode == WILD_EXPAND_FREE || mode == WILD_ALL) ExpandCleanup(xp); // Free "orig" if it wasn't stored in "orig_save". if (!orig_saved) vim_free(orig); return ss; } /* * Prepare an expand structure for use. */ void ExpandInit(expand_T *xp) { xp->xp_pattern = NULL; xp->xp_pattern_len = 0; xp->xp_backslash = XP_BS_NONE; #ifndef BACKSLASH_IN_FILENAME xp->xp_shell = FALSE; #endif xp->xp_numfiles = -1; xp->xp_files = NULL; #if defined(FEAT_EVAL) xp->xp_arg = NULL; #endif xp->xp_line = NULL; } /* * Cleanup an expand structure after use. */ void ExpandCleanup(expand_T *xp) { if (xp->xp_numfiles >= 0) { FreeWild(xp->xp_numfiles, xp->xp_files); xp->xp_numfiles = -1; } } /* * Show all matches for completion on the command line. * Returns EXPAND_NOTHING when the character that triggered expansion should * be inserted like a normal character. */ int showmatches(expand_T *xp, int wildmenu UNUSED) { cmdline_info_T *ccline = get_cmdline_info(); #define L_SHOWFILE(m) (showtail ? sm_gettail(files_found[m]) : files_found[m]) int num_files; char_u **files_found; int i, j, k; int maxlen; int lines; int columns; char_u *p; int lastlen; int attr; int showtail; if (xp->xp_numfiles == -1) { set_expand_context(xp); i = expand_cmdline(xp, ccline->cmdbuff, ccline->cmdpos, &num_files, &files_found); showtail = expand_showtail(xp); if (i != EXPAND_OK) return i; } else { num_files = xp->xp_numfiles; files_found = xp->xp_files; showtail = cmd_showtail; } #ifdef FEAT_WILDMENU if (!wildmenu) { #endif msg_didany = FALSE; // lines_left will be set msg_start(); // prepare for paging msg_putchar('\n'); out_flush(); cmdline_row = msg_row; msg_didany = FALSE; // lines_left will be set again msg_start(); // prepare for paging #ifdef FEAT_WILDMENU } #endif if (got_int) got_int = FALSE; // only int. the completion, not the cmd line #ifdef FEAT_WILDMENU else if (wildmenu) win_redr_status_matches(xp, num_files, files_found, -1, showtail); #endif else { // find the length of the longest file name maxlen = 0; for (i = 0; i < num_files; ++i) { if (!showtail && (xp->xp_context == EXPAND_FILES || xp->xp_context == EXPAND_SHELLCMD || xp->xp_context == EXPAND_BUFFERS)) { home_replace(NULL, files_found[i], NameBuff, MAXPATHL, TRUE); j = vim_strsize(NameBuff); } else j = vim_strsize(L_SHOWFILE(i)); if (j > maxlen) maxlen = j; } if (xp->xp_context == EXPAND_TAGS_LISTFILES) lines = num_files; else { // compute the number of columns and lines for the listing maxlen += 2; // two spaces between file names columns = ((int)Columns + 2) / maxlen; if (columns < 1) columns = 1; lines = (num_files + columns - 1) / columns; } attr = HL_ATTR(HLF_D); // find out highlighting for directories if (xp->xp_context == EXPAND_TAGS_LISTFILES) { msg_puts_attr(_("tagname"), HL_ATTR(HLF_T)); msg_clr_eos(); msg_advance(maxlen - 3); msg_puts_attr(_(" kind file\n"), HL_ATTR(HLF_T)); } // list the files line by line for (i = 0; i < lines; ++i) { lastlen = 999; for (k = i; k < num_files; k += lines) { if (xp->xp_context == EXPAND_TAGS_LISTFILES) { msg_outtrans_attr(files_found[k], HL_ATTR(HLF_D)); p = files_found[k] + STRLEN(files_found[k]) + 1; msg_advance(maxlen + 1); msg_puts((char *)p); msg_advance(maxlen + 3); msg_outtrans_long_attr(p + 2, HL_ATTR(HLF_D)); break; } for (j = maxlen - lastlen; --j >= 0; ) msg_putchar(' '); if (xp->xp_context == EXPAND_FILES || xp->xp_context == EXPAND_SHELLCMD || xp->xp_context == EXPAND_BUFFERS) { // highlight directories if (xp->xp_numfiles != -1) { char_u *halved_slash; char_u *exp_path; char_u *path; // Expansion was done before and special characters // were escaped, need to halve backslashes. Also // $HOME has been replaced with ~/. exp_path = expand_env_save_opt(files_found[k], TRUE); path = exp_path != NULL ? exp_path : files_found[k]; halved_slash = backslash_halve_save(path); j = mch_isdir(halved_slash != NULL ? halved_slash : files_found[k]); vim_free(exp_path); if (halved_slash != path) vim_free(halved_slash); } else // Expansion was done here, file names are literal. j = mch_isdir(files_found[k]); if (showtail) p = L_SHOWFILE(k); else { home_replace(NULL, files_found[k], NameBuff, MAXPATHL, TRUE); p = NameBuff; } } else { j = FALSE; p = L_SHOWFILE(k); } lastlen = msg_outtrans_attr(p, j ? attr : 0); } if (msg_col > 0) // when not wrapped around { msg_clr_eos(); msg_putchar('\n'); } out_flush(); // show one line at a time if (got_int) { got_int = FALSE; break; } } // we redraw the command below the lines that we have just listed // This is a bit tricky, but it saves a lot of screen updating. cmdline_row = msg_row; // will put it back later } if (xp->xp_numfiles == -1) FreeWild(num_files, files_found); return EXPAND_OK; } /* * Private gettail for showmatches() (and win_redr_status_matches()): * Find tail of file name path, but ignore trailing "/". */ char_u * sm_gettail(char_u *s) { char_u *p; char_u *t = s; int had_sep = FALSE; for (p = s; *p != NUL; ) { if (vim_ispathsep(*p) #ifdef BACKSLASH_IN_FILENAME && !rem_backslash(p) #endif ) had_sep = TRUE; else if (had_sep) { t = p; had_sep = FALSE; } MB_PTR_ADV(p); } return t; } /* * Return TRUE if we only need to show the tail of completion matches. * When not completing file names or there is a wildcard in the path FALSE is * returned. */ static int expand_showtail(expand_T *xp) { char_u *s; char_u *end; // When not completing file names a "/" may mean something different. if (xp->xp_context != EXPAND_FILES && xp->xp_context != EXPAND_SHELLCMD && xp->xp_context != EXPAND_DIRECTORIES) return FALSE; end = gettail(xp->xp_pattern); if (end == xp->xp_pattern) // there is no path separator return FALSE; for (s = xp->xp_pattern; s < end; s++) { // Skip escaped wildcards. Only when the backslash is not a path // separator, on DOS the '*' "path\*\file" must not be skipped. if (rem_backslash(s)) ++s; else if (vim_strchr((char_u *)"*?[", *s) != NULL) return FALSE; } return TRUE; } /* * Prepare a string for expansion. * When expanding file names: The string will be used with expand_wildcards(). * Copy "fname[len]" into allocated memory and add a '*' at the end. * When expanding other names: The string will be used with regcomp(). Copy * the name into allocated memory and prepend "^". */ char_u * addstar( char_u *fname, int len, int context) // EXPAND_FILES etc. { char_u *retval; int i, j; int new_len; char_u *tail; int ends_in_star; if (context != EXPAND_FILES && context != EXPAND_FILES_IN_PATH && context != EXPAND_SHELLCMD && context != EXPAND_DIRECTORIES) { // Matching will be done internally (on something other than files). // So we convert the file-matching-type wildcards into our kind for // use with vim_regcomp(). First work out how long it will be: // For help tags the translation is done in find_help_tags(). // For a tag pattern starting with "/" no translation is needed. if (context == EXPAND_HELP || context == EXPAND_COLORS || context == EXPAND_COMPILER || context == EXPAND_OWNSYNTAX || context == EXPAND_FILETYPE || context == EXPAND_PACKADD || ((context == EXPAND_TAGS_LISTFILES || context == EXPAND_TAGS) && fname[0] == '/')) retval = vim_strnsave(fname, len); else { new_len = len + 2; // +2 for '^' at start, NUL at end for (i = 0; i < len; i++) { if (fname[i] == '*' || fname[i] == '~') new_len++; // '*' needs to be replaced by ".*" // '~' needs to be replaced by "\~" // Buffer names are like file names. "." should be literal if (context == EXPAND_BUFFERS && fname[i] == '.') new_len++; // "." becomes "\." // Custom expansion takes care of special things, match // backslashes literally (perhaps also for other types?) if ((context == EXPAND_USER_DEFINED || context == EXPAND_USER_LIST) && fname[i] == '\\') new_len++; // '\' becomes "\\" } retval = alloc(new_len); if (retval != NULL) { retval[0] = '^'; j = 1; for (i = 0; i < len; i++, j++) { // Skip backslash. But why? At least keep it for custom // expansion. if (context != EXPAND_USER_DEFINED && context != EXPAND_USER_LIST && fname[i] == '\\' && ++i == len) break; switch (fname[i]) { case '*': retval[j++] = '.'; break; case '~': retval[j++] = '\\'; break; case '?': retval[j] = '.'; continue; case '.': if (context == EXPAND_BUFFERS) retval[j++] = '\\'; break; case '\\': if (context == EXPAND_USER_DEFINED || context == EXPAND_USER_LIST) retval[j++] = '\\'; break; } retval[j] = fname[i]; } retval[j] = NUL; } } } else { retval = alloc(len + 4); if (retval != NULL) { vim_strncpy(retval, fname, len); // Don't add a star to *, ~, ~user, $var or `cmd`. // * would become **, which walks the whole tree. // ~ would be at the start of the file name, but not the tail. // $ could be anywhere in the tail. // ` could be anywhere in the file name. // When the name ends in '$' don't add a star, remove the '$'. tail = gettail(retval); ends_in_star = (len > 0 && retval[len - 1] == '*'); #ifndef BACKSLASH_IN_FILENAME for (i = len - 2; i >= 0; --i) { if (retval[i] != '\\') break; ends_in_star = !ends_in_star; } #endif if ((*retval != '~' || tail != retval) && !ends_in_star && vim_strchr(tail, '$') == NULL && vim_strchr(retval, '`') == NULL) retval[len++] = '*'; else if (len > 0 && retval[len - 1] == '$') --len; retval[len] = NUL; } } return retval; } /* * Must parse the command line so far to work out what context we are in. * Completion can then be done based on that context. * This routine sets the variables: * xp->xp_pattern The start of the pattern to be expanded within * the command line (ends at the cursor). * xp->xp_context The type of thing to expand. Will be one of: * * EXPAND_UNSUCCESSFUL Used sometimes when there is something illegal on * the command line, like an unknown command. Caller * should beep. * EXPAND_NOTHING Unrecognised context for completion, use char like * a normal char, rather than for completion. eg * :s/^I/ * EXPAND_COMMANDS Cursor is still touching the command, so complete * it. * EXPAND_BUFFERS Complete file names for :buf and :sbuf commands. * EXPAND_FILES After command with EX_XFILE set, or after setting * with P_EXPAND set. eg :e ^I, :w>>^I * EXPAND_DIRECTORIES In some cases this is used instead of the latter * when we know only directories are of interest. eg * :set dir=^I * EXPAND_SHELLCMD After ":!cmd", ":r !cmd" or ":w !cmd". * EXPAND_SETTINGS Complete variable names. eg :set d^I * EXPAND_BOOL_SETTINGS Complete boolean variables only, eg :set no^I * EXPAND_TAGS Complete tags from the files in p_tags. eg :ta a^I * EXPAND_TAGS_LISTFILES As above, but list filenames on ^D, after :tselect * EXPAND_HELP Complete tags from the file 'helpfile'/tags * EXPAND_EVENTS Complete event names * EXPAND_SYNTAX Complete :syntax command arguments * EXPAND_HIGHLIGHT Complete highlight (syntax) group names * EXPAND_AUGROUP Complete autocommand group names * EXPAND_USER_VARS Complete user defined variable names, eg :unlet a^I * EXPAND_MAPPINGS Complete mapping and abbreviation names, * eg :unmap a^I , :cunab x^I * EXPAND_FUNCTIONS Complete internal or user defined function names, * eg :call sub^I * EXPAND_USER_FUNC Complete user defined function names, eg :delf F^I * EXPAND_EXPRESSION Complete internal or user defined function/variable * names in expressions, eg :while s^I * EXPAND_ENV_VARS Complete environment variable names * EXPAND_USER Complete user names */ static void set_expand_context(expand_T *xp) { cmdline_info_T *ccline = get_cmdline_info(); // only expansion for ':', '>' and '=' command-lines if (ccline->cmdfirstc != ':' #ifdef FEAT_EVAL && ccline->cmdfirstc != '>' && ccline->cmdfirstc != '=' && !ccline->input_fn #endif ) { xp->xp_context = EXPAND_NOTHING; return; } set_cmd_context(xp, ccline->cmdbuff, ccline->cmdlen, ccline->cmdpos, TRUE); } /* * This is all pretty much copied from do_one_cmd(), with all the extra stuff * we don't need/want deleted. Maybe this could be done better if we didn't * repeat all this stuff. The only problem is that they may not stay * perfectly compatible with each other, but then the command line syntax * probably won't change that much -- webb. */ static char_u * set_one_cmd_context( expand_T *xp, char_u *buff) // buffer for command string { char_u *p; char_u *cmd, *arg; int len = 0; exarg_T ea; int compl = EXPAND_NOTHING; int delim; int forceit = FALSE; int usefilter = FALSE; // filter instead of file name ExpandInit(xp); xp->xp_pattern = buff; xp->xp_context = EXPAND_COMMANDS; // Default until we get past command ea.argt = 0; // 1. skip comment lines and leading space, colons or bars for (cmd = buff; vim_strchr((char_u *)" \t:|", *cmd) != NULL; cmd++) ; xp->xp_pattern = cmd; if (*cmd == NUL) return NULL; if (*cmd == '"') // ignore comment lines { xp->xp_context = EXPAND_NOTHING; return NULL; } // 3. Skip over the range to find the command. cmd = skip_range(cmd, &xp->xp_context); xp->xp_pattern = cmd; if (*cmd == NUL) return NULL; if (*cmd == '"') { xp->xp_context = EXPAND_NOTHING; return NULL; } if (*cmd == '|' || *cmd == '\n') return cmd + 1; // There's another command // Isolate the command and search for it in the command table. // Exceptions: // - the 'k' command can directly be followed by any character, but // do accept "keepmarks", "keepalt" and "keepjumps". // - the 's' command can be followed directly by 'c', 'g', 'i', 'I' or 'r' if (*cmd == 'k' && cmd[1] != 'e') { ea.cmdidx = CMD_k; p = cmd + 1; } else { p = cmd; while (ASCII_ISALPHA(*p) || *p == '*') // Allow * wild card ++p; // a user command may contain digits if (ASCII_ISUPPER(cmd[0])) while (ASCII_ISALNUM(*p) || *p == '*') ++p; // for python 3.x: ":py3*" commands completion if (cmd[0] == 'p' && cmd[1] == 'y' && p == cmd + 2 && *p == '3') { ++p; while (ASCII_ISALPHA(*p) || *p == '*') ++p; } // check for non-alpha command if (p == cmd && vim_strchr((char_u *)"@*!=><&~#", *p) != NULL) ++p; len = (int)(p - cmd); if (len == 0) { xp->xp_context = EXPAND_UNSUCCESSFUL; return NULL; } ea.cmdidx = excmd_get_cmdidx(cmd, len); if (cmd[0] >= 'A' && cmd[0] <= 'Z') while (ASCII_ISALNUM(*p) || *p == '*') // Allow * wild card ++p; } // If the cursor is touching the command, and it ends in an alpha-numeric // character, complete the command name. if (*p == NUL && ASCII_ISALNUM(p[-1])) return NULL; if (ea.cmdidx == CMD_SIZE) { if (*cmd == 's' && vim_strchr((char_u *)"cgriI", cmd[1]) != NULL) { ea.cmdidx = CMD_substitute; p = cmd + 1; } else if (cmd[0] >= 'A' && cmd[0] <= 'Z') { ea.cmd = cmd; p = find_ucmd(&ea, p, NULL, xp, &compl); if (p == NULL) ea.cmdidx = CMD_SIZE; // ambiguous user command } } if (ea.cmdidx == CMD_SIZE) { // Not still touching the command and it was an illegal one xp->xp_context = EXPAND_UNSUCCESSFUL; return NULL; } xp->xp_context = EXPAND_NOTHING; // Default now that we're past command if (*p == '!') // forced commands { forceit = TRUE; ++p; } // 6. parse arguments if (!IS_USER_CMDIDX(ea.cmdidx)) ea.argt = excmd_get_argt(ea.cmdidx); arg = skipwhite(p); if (ea.cmdidx == CMD_write || ea.cmdidx == CMD_update) { if (*arg == '>') // append { if (*++arg == '>') ++arg; arg = skipwhite(arg); } else if (*arg == '!' && ea.cmdidx == CMD_write) // :w !filter { ++arg; usefilter = TRUE; } } if (ea.cmdidx == CMD_read) { usefilter = forceit; // :r! filter if forced if (*arg == '!') // :r !filter { ++arg; usefilter = TRUE; } } if (ea.cmdidx == CMD_lshift || ea.cmdidx == CMD_rshift) { while (*arg == *cmd) // allow any number of '>' or '<' ++arg; arg = skipwhite(arg); } // Does command allow "+command"? if ((ea.argt & EX_CMDARG) && !usefilter && *arg == '+') { // Check if we're in the +command p = arg + 1; arg = skip_cmd_arg(arg, FALSE); // Still touching the command after '+'? if (*arg == NUL) return p; // Skip space(s) after +command to get to the real argument arg = skipwhite(arg); } // Check for '|' to separate commands and '"' to start comments. // Don't do this for ":read !cmd" and ":write !cmd". if ((ea.argt & EX_TRLBAR) && !usefilter) { p = arg; // ":redir @" is not the start of a comment if (ea.cmdidx == CMD_redir && p[0] == '@' && p[1] == '"') p += 2; while (*p) { if (*p == Ctrl_V) { if (p[1] != NUL) ++p; } else if ( (*p == '"' && !(ea.argt & EX_NOTRLCOM)) || *p == '|' || *p == '\n') { if (*(p - 1) != '\\') { if (*p == '|' || *p == '\n') return p + 1; return NULL; // It's a comment } } MB_PTR_ADV(p); } } if (!(ea.argt & EX_EXTRA) && *arg != NUL && vim_strchr((char_u *)"|\"", *arg) == NULL) // no arguments allowed but there is something return NULL; // Find start of last argument (argument just before cursor): p = buff; xp->xp_pattern = p; len = (int)STRLEN(buff); while (*p && p < buff + len) { if (*p == ' ' || *p == TAB) { // argument starts after a space xp->xp_pattern = ++p; } else { if (*p == '\\' && *(p + 1) != NUL) ++p; // skip over escaped character MB_PTR_ADV(p); } } if (ea.argt & EX_XFILE) { int c; int in_quote = FALSE; char_u *bow = NULL; // Beginning of word // Allow spaces within back-quotes to count as part of the argument // being expanded. xp->xp_pattern = skipwhite(arg); p = xp->xp_pattern; while (*p != NUL) { if (has_mbyte) c = mb_ptr2char(p); else c = *p; if (c == '\\' && p[1] != NUL) ++p; else if (c == '`') { if (!in_quote) { xp->xp_pattern = p; bow = p + 1; } in_quote = !in_quote; } // An argument can contain just about everything, except // characters that end the command and white space. else if (c == '|' || c == '\n' || c == '"' || (VIM_ISWHITE(c) #ifdef SPACE_IN_FILENAME && (!(ea.argt & EX_NOSPC) || usefilter) #endif )) { len = 0; // avoid getting stuck when space is in 'isfname' while (*p != NUL) { if (has_mbyte) c = mb_ptr2char(p); else c = *p; if (c == '`' || vim_isfilec_or_wc(c)) break; if (has_mbyte) len = (*mb_ptr2len)(p); else len = 1; MB_PTR_ADV(p); } if (in_quote) bow = p; else xp->xp_pattern = p; p -= len; } MB_PTR_ADV(p); } // If we are still inside the quotes, and we passed a space, just // expand from there. if (bow != NULL && in_quote) xp->xp_pattern = bow; xp->xp_context = EXPAND_FILES; // For a shell command more chars need to be escaped. if (usefilter || ea.cmdidx == CMD_bang || ea.cmdidx == CMD_terminal) { #ifndef BACKSLASH_IN_FILENAME xp->xp_shell = TRUE; #endif // When still after the command name expand executables. if (xp->xp_pattern == skipwhite(arg)) xp->xp_context = EXPAND_SHELLCMD; } // Check for environment variable if (*xp->xp_pattern == '$' #if defined(MSWIN) || *xp->xp_pattern == '%' #endif ) { for (p = xp->xp_pattern + 1; *p != NUL; ++p) if (!vim_isIDc(*p)) break; if (*p == NUL) { xp->xp_context = EXPAND_ENV_VARS; ++xp->xp_pattern; // Avoid that the assignment uses EXPAND_FILES again. if (compl != EXPAND_USER_DEFINED && compl != EXPAND_USER_LIST) compl = EXPAND_ENV_VARS; } } // Check for user names if (*xp->xp_pattern == '~') { for (p = xp->xp_pattern + 1; *p != NUL && *p != '/'; ++p) ; // Complete ~user only if it partially matches a user name. // A full match ~user<Tab> will be replaced by user's home // directory i.e. something like ~user<Tab> -> /home/user/ if (*p == NUL && p > xp->xp_pattern + 1 && match_user(xp->xp_pattern + 1) >= 1) { xp->xp_context = EXPAND_USER; ++xp->xp_pattern; } } } // 6. Switch on command name. switch (ea.cmdidx) { case CMD_find: case CMD_sfind: case CMD_tabfind: if (xp->xp_context == EXPAND_FILES) xp->xp_context = EXPAND_FILES_IN_PATH; break; case CMD_cd: case CMD_chdir: case CMD_tcd: case CMD_tchdir: case CMD_lcd: case CMD_lchdir: if (xp->xp_context == EXPAND_FILES) xp->xp_context = EXPAND_DIRECTORIES; break; case CMD_help: xp->xp_context = EXPAND_HELP; xp->xp_pattern = arg; break; // Command modifiers: return the argument. // Also for commands with an argument that is a command. case CMD_aboveleft: case CMD_argdo: case CMD_belowright: case CMD_botright: case CMD_browse: case CMD_bufdo: case CMD_cdo: case CMD_cfdo: case CMD_confirm: case CMD_debug: case CMD_folddoclosed: case CMD_folddoopen: case CMD_hide: case CMD_keepalt: case CMD_keepjumps: case CMD_keepmarks: case CMD_keeppatterns: case CMD_ldo: case CMD_leftabove: case CMD_lfdo: case CMD_lockmarks: case CMD_noautocmd: case CMD_noswapfile: case CMD_rightbelow: case CMD_sandbox: case CMD_silent: case CMD_tab: case CMD_tabdo: case CMD_topleft: case CMD_verbose: case CMD_vertical: case CMD_windo: return arg; case CMD_filter: if (*arg != NUL) arg = skip_vimgrep_pat(arg, NULL, NULL); if (arg == NULL || *arg == NUL) { xp->xp_context = EXPAND_NOTHING; return NULL; } return skipwhite(arg); #ifdef FEAT_SEARCH_EXTRA case CMD_match: if (*arg == NUL || !ends_excmd(*arg)) { // also complete "None" set_context_in_echohl_cmd(xp, arg); arg = skipwhite(skiptowhite(arg)); if (*arg != NUL) { xp->xp_context = EXPAND_NOTHING; arg = skip_regexp(arg + 1, *arg, p_magic, NULL); } } return find_nextcmd(arg); #endif // All completion for the +cmdline_compl feature goes here. case CMD_command: return set_context_in_user_cmd(xp, arg); case CMD_delcommand: xp->xp_context = EXPAND_USER_COMMANDS; xp->xp_pattern = arg; break; case CMD_global: case CMD_vglobal: delim = *arg; // get the delimiter if (delim) ++arg; // skip delimiter if there is one while (arg[0] != NUL && arg[0] != delim) { if (arg[0] == '\\' && arg[1] != NUL) ++arg; ++arg; } if (arg[0] != NUL) return arg + 1; break; case CMD_and: case CMD_substitute: delim = *arg; if (delim) { // skip "from" part ++arg; arg = skip_regexp(arg, delim, p_magic, NULL); } // skip "to" part while (arg[0] != NUL && arg[0] != delim) { if (arg[0] == '\\' && arg[1] != NUL) ++arg; ++arg; } if (arg[0] != NUL) // skip delimiter ++arg; while (arg[0] && vim_strchr((char_u *)"|\"#", arg[0]) == NULL) ++arg; if (arg[0] != NUL) return arg; break; case CMD_isearch: case CMD_dsearch: case CMD_ilist: case CMD_dlist: case CMD_ijump: case CMD_psearch: case CMD_djump: case CMD_isplit: case CMD_dsplit: arg = skipwhite(skipdigits(arg)); // skip count if (*arg == '/') // Match regexp, not just whole words { for (++arg; *arg && *arg != '/'; arg++) if (*arg == '\\' && arg[1] != NUL) arg++; if (*arg) { arg = skipwhite(arg + 1); // Check for trailing illegal characters if (*arg && vim_strchr((char_u *)"|\"\n", *arg) == NULL) xp->xp_context = EXPAND_NOTHING; else return arg; } } break; case CMD_autocmd: return set_context_in_autocmd(xp, arg, FALSE); case CMD_doautocmd: case CMD_doautoall: return set_context_in_autocmd(xp, arg, TRUE); case CMD_set: set_context_in_set_cmd(xp, arg, 0); break; case CMD_setglobal: set_context_in_set_cmd(xp, arg, OPT_GLOBAL); break; case CMD_setlocal: set_context_in_set_cmd(xp, arg, OPT_LOCAL); break; case CMD_tag: case CMD_stag: case CMD_ptag: case CMD_ltag: case CMD_tselect: case CMD_stselect: case CMD_ptselect: case CMD_tjump: case CMD_stjump: case CMD_ptjump: if (*p_wop != NUL) xp->xp_context = EXPAND_TAGS_LISTFILES; else xp->xp_context = EXPAND_TAGS; xp->xp_pattern = arg; break; case CMD_augroup: xp->xp_context = EXPAND_AUGROUP; xp->xp_pattern = arg; break; #ifdef FEAT_SYN_HL case CMD_syntax: set_context_in_syntax_cmd(xp, arg); break; #endif #ifdef FEAT_EVAL case CMD_const: case CMD_let: case CMD_if: case CMD_elseif: case CMD_while: case CMD_for: case CMD_echo: case CMD_echon: case CMD_execute: case CMD_echomsg: case CMD_echoerr: case CMD_call: case CMD_return: case CMD_cexpr: case CMD_caddexpr: case CMD_cgetexpr: case CMD_lexpr: case CMD_laddexpr: case CMD_lgetexpr: set_context_for_expression(xp, arg, ea.cmdidx); break; case CMD_unlet: while ((xp->xp_pattern = vim_strchr(arg, ' ')) != NULL) arg = xp->xp_pattern + 1; xp->xp_context = EXPAND_USER_VARS; xp->xp_pattern = arg; if (*xp->xp_pattern == '$') { xp->xp_context = EXPAND_ENV_VARS; ++xp->xp_pattern; } break; case CMD_function: case CMD_delfunction: xp->xp_context = EXPAND_USER_FUNC; xp->xp_pattern = arg; break; case CMD_echohl: set_context_in_echohl_cmd(xp, arg); break; #endif case CMD_highlight: set_context_in_highlight_cmd(xp, arg); break; #ifdef FEAT_CSCOPE case CMD_cscope: case CMD_lcscope: case CMD_scscope: set_context_in_cscope_cmd(xp, arg, ea.cmdidx); break; #endif #ifdef FEAT_SIGNS case CMD_sign: set_context_in_sign_cmd(xp, arg); break; #endif case CMD_bdelete: case CMD_bwipeout: case CMD_bunload: while ((xp->xp_pattern = vim_strchr(arg, ' ')) != NULL) arg = xp->xp_pattern + 1; // FALLTHROUGH case CMD_buffer: case CMD_sbuffer: case CMD_checktime: xp->xp_context = EXPAND_BUFFERS; xp->xp_pattern = arg; break; #ifdef FEAT_DIFF case CMD_diffget: case CMD_diffput: // If current buffer is in diff mode, complete buffer names // which are in diff mode, and different than current buffer. xp->xp_context = EXPAND_DIFF_BUFFERS; xp->xp_pattern = arg; break; #endif case CMD_USER: case CMD_USER_BUF: if (compl != EXPAND_NOTHING) { // EX_XFILE: file names are handled above if (!(ea.argt & EX_XFILE)) { #ifdef FEAT_MENU if (compl == EXPAND_MENUS) return set_context_in_menu_cmd(xp, cmd, arg, forceit); #endif if (compl == EXPAND_COMMANDS) return arg; if (compl == EXPAND_MAPPINGS) return set_context_in_map_cmd(xp, (char_u *)"map", arg, forceit, FALSE, FALSE, CMD_map); // Find start of last argument. p = arg; while (*p) { if (*p == ' ') // argument starts after a space arg = p + 1; else if (*p == '\\' && *(p + 1) != NUL) ++p; // skip over escaped character MB_PTR_ADV(p); } xp->xp_pattern = arg; } xp->xp_context = compl; } break; case CMD_map: case CMD_noremap: case CMD_nmap: case CMD_nnoremap: case CMD_vmap: case CMD_vnoremap: case CMD_omap: case CMD_onoremap: case CMD_imap: case CMD_inoremap: case CMD_cmap: case CMD_cnoremap: case CMD_lmap: case CMD_lnoremap: case CMD_smap: case CMD_snoremap: case CMD_tmap: case CMD_tnoremap: case CMD_xmap: case CMD_xnoremap: return set_context_in_map_cmd(xp, cmd, arg, forceit, FALSE, FALSE, ea.cmdidx); case CMD_unmap: case CMD_nunmap: case CMD_vunmap: case CMD_ounmap: case CMD_iunmap: case CMD_cunmap: case CMD_lunmap: case CMD_sunmap: case CMD_tunmap: case CMD_xunmap: return set_context_in_map_cmd(xp, cmd, arg, forceit, FALSE, TRUE, ea.cmdidx); case CMD_mapclear: case CMD_nmapclear: case CMD_vmapclear: case CMD_omapclear: case CMD_imapclear: case CMD_cmapclear: case CMD_lmapclear: case CMD_smapclear: case CMD_tmapclear: case CMD_xmapclear: xp->xp_context = EXPAND_MAPCLEAR; xp->xp_pattern = arg; break; case CMD_abbreviate: case CMD_noreabbrev: case CMD_cabbrev: case CMD_cnoreabbrev: case CMD_iabbrev: case CMD_inoreabbrev: return set_context_in_map_cmd(xp, cmd, arg, forceit, TRUE, FALSE, ea.cmdidx); case CMD_unabbreviate: case CMD_cunabbrev: case CMD_iunabbrev: return set_context_in_map_cmd(xp, cmd, arg, forceit, TRUE, TRUE, ea.cmdidx); #ifdef FEAT_MENU case CMD_menu: case CMD_noremenu: case CMD_unmenu: case CMD_amenu: case CMD_anoremenu: case CMD_aunmenu: case CMD_nmenu: case CMD_nnoremenu: case CMD_nunmenu: case CMD_vmenu: case CMD_vnoremenu: case CMD_vunmenu: case CMD_omenu: case CMD_onoremenu: case CMD_ounmenu: case CMD_imenu: case CMD_inoremenu: case CMD_iunmenu: case CMD_cmenu: case CMD_cnoremenu: case CMD_cunmenu: case CMD_tlmenu: case CMD_tlnoremenu: case CMD_tlunmenu: case CMD_tmenu: case CMD_tunmenu: case CMD_popup: case CMD_tearoff: case CMD_emenu: return set_context_in_menu_cmd(xp, cmd, arg, forceit); #endif case CMD_colorscheme: xp->xp_context = EXPAND_COLORS; xp->xp_pattern = arg; break; case CMD_compiler: xp->xp_context = EXPAND_COMPILER; xp->xp_pattern = arg; break; case CMD_ownsyntax: xp->xp_context = EXPAND_OWNSYNTAX; xp->xp_pattern = arg; break; case CMD_setfiletype: xp->xp_context = EXPAND_FILETYPE; xp->xp_pattern = arg; break; case CMD_packadd: xp->xp_context = EXPAND_PACKADD; xp->xp_pattern = arg; break; #if defined(HAVE_LOCALE_H) || defined(X_LOCALE) case CMD_language: p = skiptowhite(arg); if (*p == NUL) { xp->xp_context = EXPAND_LANGUAGE; xp->xp_pattern = arg; } else { if ( STRNCMP(arg, "messages", p - arg) == 0 || STRNCMP(arg, "ctype", p - arg) == 0 || STRNCMP(arg, "time", p - arg) == 0) { xp->xp_context = EXPAND_LOCALES; xp->xp_pattern = skipwhite(p); } else xp->xp_context = EXPAND_NOTHING; } break; #endif #if defined(FEAT_PROFILE) case CMD_profile: set_context_in_profile_cmd(xp, arg); break; #endif case CMD_behave: xp->xp_context = EXPAND_BEHAVE; xp->xp_pattern = arg; break; case CMD_messages: xp->xp_context = EXPAND_MESSAGES; xp->xp_pattern = arg; break; case CMD_history: xp->xp_context = EXPAND_HISTORY; xp->xp_pattern = arg; break; #if defined(FEAT_PROFILE) case CMD_syntime: xp->xp_context = EXPAND_SYNTIME; xp->xp_pattern = arg; break; #endif case CMD_argdelete: while ((xp->xp_pattern = vim_strchr(arg, ' ')) != NULL) arg = xp->xp_pattern + 1; xp->xp_context = EXPAND_ARGLIST; xp->xp_pattern = arg; break; default: break; } return NULL; } void set_cmd_context( expand_T *xp, char_u *str, // start of command line int len, // length of command line (excl. NUL) int col, // position of cursor int use_ccline UNUSED) // use ccline for info { #ifdef FEAT_EVAL cmdline_info_T *ccline = get_cmdline_info(); #endif int old_char = NUL; char_u *nextcomm; // Avoid a UMR warning from Purify, only save the character if it has been // written before. if (col < len) old_char = str[col]; str[col] = NUL; nextcomm = str; #ifdef FEAT_EVAL if (use_ccline && ccline->cmdfirstc == '=') { // pass CMD_SIZE because there is no real command set_context_for_expression(xp, str, CMD_SIZE); } else if (use_ccline && ccline->input_fn) { xp->xp_context = ccline->xp_context; xp->xp_pattern = ccline->cmdbuff; xp->xp_arg = ccline->xp_arg; } else #endif while (nextcomm != NULL) nextcomm = set_one_cmd_context(xp, nextcomm); // Store the string here so that call_user_expand_func() can get to them // easily. xp->xp_line = str; xp->xp_col = col; str[col] = old_char; } /* * Expand the command line "str" from context "xp". * "xp" must have been set by set_cmd_context(). * xp->xp_pattern points into "str", to where the text that is to be expanded * starts. * Returns EXPAND_UNSUCCESSFUL when there is something illegal before the * cursor. * Returns EXPAND_NOTHING when there is nothing to expand, might insert the * key that triggered expansion literally. * Returns EXPAND_OK otherwise. */ int expand_cmdline( expand_T *xp, char_u *str, // start of command line int col, // position of cursor int *matchcount, // return: nr of matches char_u ***matches) // return: array of pointers to matches { char_u *file_str = NULL; int options = WILD_ADD_SLASH|WILD_SILENT; if (xp->xp_context == EXPAND_UNSUCCESSFUL) { beep_flush(); return EXPAND_UNSUCCESSFUL; // Something illegal on command line } if (xp->xp_context == EXPAND_NOTHING) { // Caller can use the character as a normal char instead return EXPAND_NOTHING; } // add star to file name, or convert to regexp if not exp. files. xp->xp_pattern_len = (int)(str + col - xp->xp_pattern); file_str = addstar(xp->xp_pattern, xp->xp_pattern_len, xp->xp_context); if (file_str == NULL) return EXPAND_UNSUCCESSFUL; if (p_wic) options += WILD_ICASE; // find all files that match the description if (ExpandFromContext(xp, file_str, matchcount, matches, options) == FAIL) { *matchcount = 0; *matches = NULL; } vim_free(file_str); return EXPAND_OK; } #ifdef FEAT_MULTI_LANG /* * Cleanup matches for help tags: * Remove "@ab" if the top of 'helplang' is "ab" and the language of the first * tag matches it. Otherwise remove "@en" if "en" is the only language. */ static void cleanup_help_tags(int num_file, char_u **file) { int i, j; int len; char_u buf[4]; char_u *p = buf; if (p_hlg[0] != NUL && (p_hlg[0] != 'e' || p_hlg[1] != 'n')) { *p++ = '@'; *p++ = p_hlg[0]; *p++ = p_hlg[1]; } *p = NUL; for (i = 0; i < num_file; ++i) { len = (int)STRLEN(file[i]) - 3; if (len <= 0) continue; if (STRCMP(file[i] + len, "@en") == 0) { // Sorting on priority means the same item in another language may // be anywhere. Search all items for a match up to the "@en". for (j = 0; j < num_file; ++j) if (j != i && (int)STRLEN(file[j]) == len + 3 && STRNCMP(file[i], file[j], len + 1) == 0) break; if (j == num_file) // item only exists with @en, remove it file[i][len] = NUL; } } if (*buf != NUL) for (i = 0; i < num_file; ++i) { len = (int)STRLEN(file[i]) - 3; if (len <= 0) continue; if (STRCMP(file[i] + len, buf) == 0) { // remove the default language file[i][len] = NUL; } } } #endif /* * Function given to ExpandGeneric() to obtain the possible arguments of the * ":behave {mswin,xterm}" command. */ static char_u * get_behave_arg(expand_T *xp UNUSED, int idx) { if (idx == 0) return (char_u *)"mswin"; if (idx == 1) return (char_u *)"xterm"; return NULL; } /* * Function given to ExpandGeneric() to obtain the possible arguments of the * ":messages {clear}" command. */ static char_u * get_messages_arg(expand_T *xp UNUSED, int idx) { if (idx == 0) return (char_u *)"clear"; return NULL; } static char_u * get_mapclear_arg(expand_T *xp UNUSED, int idx) { if (idx == 0) return (char_u *)"<buffer>"; return NULL; } /* * Do the expansion based on xp->xp_context and "pat". */ static int ExpandFromContext( expand_T *xp, char_u *pat, int *num_file, char_u ***file, int options) // WILD_ flags { regmatch_T regmatch; int ret; int flags; flags = EW_DIR; // include directories if (options & WILD_LIST_NOTFOUND) flags |= EW_NOTFOUND; if (options & WILD_ADD_SLASH) flags |= EW_ADDSLASH; if (options & WILD_KEEP_ALL) flags |= EW_KEEPALL; if (options & WILD_SILENT) flags |= EW_SILENT; if (options & WILD_NOERROR) flags |= EW_NOERROR; if (options & WILD_ALLLINKS) flags |= EW_ALLLINKS; if (xp->xp_context == EXPAND_FILES || xp->xp_context == EXPAND_DIRECTORIES || xp->xp_context == EXPAND_FILES_IN_PATH) { // Expand file or directory names. int free_pat = FALSE; int i; // for ":set path=" and ":set tags=" halve backslashes for escaped // space if (xp->xp_backslash != XP_BS_NONE) { free_pat = TRUE; pat = vim_strsave(pat); for (i = 0; pat[i]; ++i) if (pat[i] == '\\') { if (xp->xp_backslash == XP_BS_THREE && pat[i + 1] == '\\' && pat[i + 2] == '\\' && pat[i + 3] == ' ') STRMOVE(pat + i, pat + i + 3); if (xp->xp_backslash == XP_BS_ONE && pat[i + 1] == ' ') STRMOVE(pat + i, pat + i + 1); } } if (xp->xp_context == EXPAND_FILES) flags |= EW_FILE; else if (xp->xp_context == EXPAND_FILES_IN_PATH) flags |= (EW_FILE | EW_PATH); else flags = (flags | EW_DIR) & ~EW_FILE; if (options & WILD_ICASE) flags |= EW_ICASE; // Expand wildcards, supporting %:h and the like. ret = expand_wildcards_eval(&pat, num_file, file, flags); if (free_pat) vim_free(pat); #ifdef BACKSLASH_IN_FILENAME if (p_csl[0] != NUL && (options & WILD_IGNORE_COMPLETESLASH) == 0) { int i; for (i = 0; i < *num_file; ++i) { char_u *ptr = (*file)[i]; while (*ptr != NUL) { if (p_csl[0] == 's' && *ptr == '\\') *ptr = '/'; else if (p_csl[0] == 'b' && *ptr == '/') *ptr = '\\'; ptr += (*mb_ptr2len)(ptr); } } } #endif return ret; } *file = (char_u **)""; *num_file = 0; if (xp->xp_context == EXPAND_HELP) { // With an empty argument we would get all the help tags, which is // very slow. Get matches for "help" instead. if (find_help_tags(*pat == NUL ? (char_u *)"help" : pat, num_file, file, FALSE) == OK) { #ifdef FEAT_MULTI_LANG cleanup_help_tags(*num_file, *file); #endif return OK; } return FAIL; } if (xp->xp_context == EXPAND_SHELLCMD) return expand_shellcmd(pat, num_file, file, flags); if (xp->xp_context == EXPAND_OLD_SETTING) return ExpandOldSetting(num_file, file); if (xp->xp_context == EXPAND_BUFFERS) return ExpandBufnames(pat, num_file, file, options); #ifdef FEAT_DIFF if (xp->xp_context == EXPAND_DIFF_BUFFERS) return ExpandBufnames(pat, num_file, file, options | BUF_DIFF_FILTER); #endif if (xp->xp_context == EXPAND_TAGS || xp->xp_context == EXPAND_TAGS_LISTFILES) return expand_tags(xp->xp_context == EXPAND_TAGS, pat, num_file, file); if (xp->xp_context == EXPAND_COLORS) { char *directories[] = {"colors", NULL}; return ExpandRTDir(pat, DIP_START + DIP_OPT, num_file, file, directories); } if (xp->xp_context == EXPAND_COMPILER) { char *directories[] = {"compiler", NULL}; return ExpandRTDir(pat, 0, num_file, file, directories); } if (xp->xp_context == EXPAND_OWNSYNTAX) { char *directories[] = {"syntax", NULL}; return ExpandRTDir(pat, 0, num_file, file, directories); } if (xp->xp_context == EXPAND_FILETYPE) { char *directories[] = {"syntax", "indent", "ftplugin", NULL}; return ExpandRTDir(pat, 0, num_file, file, directories); } # if defined(FEAT_EVAL) if (xp->xp_context == EXPAND_USER_LIST) return ExpandUserList(xp, num_file, file); # endif if (xp->xp_context == EXPAND_PACKADD) return ExpandPackAddDir(pat, num_file, file); regmatch.regprog = vim_regcomp(pat, p_magic ? RE_MAGIC : 0); if (regmatch.regprog == NULL) return FAIL; // set ignore-case according to p_ic, p_scs and pat regmatch.rm_ic = ignorecase(pat); if (xp->xp_context == EXPAND_SETTINGS || xp->xp_context == EXPAND_BOOL_SETTINGS) ret = ExpandSettings(xp, ®match, num_file, file); else if (xp->xp_context == EXPAND_MAPPINGS) ret = ExpandMappings(®match, num_file, file); # if defined(FEAT_EVAL) else if (xp->xp_context == EXPAND_USER_DEFINED) ret = ExpandUserDefined(xp, ®match, num_file, file); # endif else { static struct expgen { int context; char_u *((*func)(expand_T *, int)); int ic; int escaped; } tab[] = { {EXPAND_COMMANDS, get_command_name, FALSE, TRUE}, {EXPAND_BEHAVE, get_behave_arg, TRUE, TRUE}, {EXPAND_MAPCLEAR, get_mapclear_arg, TRUE, TRUE}, {EXPAND_MESSAGES, get_messages_arg, TRUE, TRUE}, {EXPAND_HISTORY, get_history_arg, TRUE, TRUE}, {EXPAND_USER_COMMANDS, get_user_commands, FALSE, TRUE}, {EXPAND_USER_ADDR_TYPE, get_user_cmd_addr_type, FALSE, TRUE}, {EXPAND_USER_CMD_FLAGS, get_user_cmd_flags, FALSE, TRUE}, {EXPAND_USER_NARGS, get_user_cmd_nargs, FALSE, TRUE}, {EXPAND_USER_COMPLETE, get_user_cmd_complete, FALSE, TRUE}, # ifdef FEAT_EVAL {EXPAND_USER_VARS, get_user_var_name, FALSE, TRUE}, {EXPAND_FUNCTIONS, get_function_name, FALSE, TRUE}, {EXPAND_USER_FUNC, get_user_func_name, FALSE, TRUE}, {EXPAND_EXPRESSION, get_expr_name, FALSE, TRUE}, # endif # ifdef FEAT_MENU {EXPAND_MENUS, get_menu_name, FALSE, TRUE}, {EXPAND_MENUNAMES, get_menu_names, FALSE, TRUE}, # endif # ifdef FEAT_SYN_HL {EXPAND_SYNTAX, get_syntax_name, TRUE, TRUE}, # endif # ifdef FEAT_PROFILE {EXPAND_SYNTIME, get_syntime_arg, TRUE, TRUE}, # endif {EXPAND_HIGHLIGHT, get_highlight_name, TRUE, TRUE}, {EXPAND_EVENTS, get_event_name, TRUE, TRUE}, {EXPAND_AUGROUP, get_augroup_name, TRUE, TRUE}, # ifdef FEAT_CSCOPE {EXPAND_CSCOPE, get_cscope_name, TRUE, TRUE}, # endif # ifdef FEAT_SIGNS {EXPAND_SIGN, get_sign_name, TRUE, TRUE}, # endif # ifdef FEAT_PROFILE {EXPAND_PROFILE, get_profile_name, TRUE, TRUE}, # endif # if defined(HAVE_LOCALE_H) || defined(X_LOCALE) {EXPAND_LANGUAGE, get_lang_arg, TRUE, FALSE}, {EXPAND_LOCALES, get_locales, TRUE, FALSE}, # endif {EXPAND_ENV_VARS, get_env_name, TRUE, TRUE}, {EXPAND_USER, get_users, TRUE, FALSE}, {EXPAND_ARGLIST, get_arglist_name, TRUE, FALSE}, }; int i; // Find a context in the table and call the ExpandGeneric() with the // right function to do the expansion. ret = FAIL; for (i = 0; i < (int)(sizeof(tab) / sizeof(struct expgen)); ++i) if (xp->xp_context == tab[i].context) { if (tab[i].ic) regmatch.rm_ic = TRUE; ret = ExpandGeneric(xp, ®match, num_file, file, tab[i].func, tab[i].escaped); break; } } vim_regfree(regmatch.regprog); return ret; } /* * Expand a list of names. * * Generic function for command line completion. It calls a function to * obtain strings, one by one. The strings are matched against a regexp * program. Matching strings are copied into an array, which is returned. * * Returns OK when no problems encountered, FAIL for error (out of memory). */ static int ExpandGeneric( expand_T *xp, regmatch_T *regmatch, int *num_file, char_u ***file, char_u *((*func)(expand_T *, int)), // returns a string from the list int escaped) { int i; int count = 0; int round; char_u *str; // do this loop twice: // round == 0: count the number of matching names // round == 1: copy the matching names into allocated memory for (round = 0; round <= 1; ++round) { for (i = 0; ; ++i) { str = (*func)(xp, i); if (str == NULL) // end of list break; if (*str == NUL) // skip empty strings continue; if (vim_regexec(regmatch, str, (colnr_T)0)) { if (round) { if (escaped) str = vim_strsave_escaped(str, (char_u *)" \t\\."); else str = vim_strsave(str); if (str == NULL) { FreeWild(count, *file); *num_file = 0; *file = NULL; return FAIL; } (*file)[count] = str; # ifdef FEAT_MENU if (func == get_menu_names && str != NULL) { // test for separator added by get_menu_names() str += STRLEN(str) - 1; if (*str == '\001') *str = '.'; } # endif } ++count; } } if (round == 0) { if (count == 0) return OK; *file = ALLOC_MULT(char_u *, count); if (*file == NULL) { *num_file = 0; *file = NULL; return FAIL; } *num_file = count; count = 0; } } // Sort the results. Keep menu's in the specified order. if (xp->xp_context != EXPAND_MENUNAMES && xp->xp_context != EXPAND_MENUS) { if (xp->xp_context == EXPAND_EXPRESSION || xp->xp_context == EXPAND_FUNCTIONS || xp->xp_context == EXPAND_USER_FUNC) // <SNR> functions should be sorted to the end. qsort((void *)*file, (size_t)*num_file, sizeof(char_u *), sort_func_compare); else sort_strings(*file, *num_file); } #if defined(FEAT_SYN_HL) // Reset the variables used for special highlight names expansion, so that // they don't show up when getting normal highlight names by ID. reset_expand_highlight(); #endif return OK; } /* * Complete a shell command. * Returns FAIL or OK; */ static int expand_shellcmd( char_u *filepat, // pattern to match with command names int *num_file, // return: number of matches char_u ***file, // return: array with matches int flagsarg) // EW_ flags { char_u *pat; int i; char_u *path = NULL; int mustfree = FALSE; garray_T ga; char_u *buf; size_t l; char_u *s, *e; int flags = flagsarg; int ret; int did_curdir = FALSE; hashtab_T found_ht; hashitem_T *hi; hash_T hash; buf = alloc(MAXPATHL); if (buf == NULL) return FAIL; // for ":set path=" and ":set tags=" halve backslashes for escaped space pat = vim_strsave(filepat); if (pat == NULL) { vim_free(buf); return FAIL; } for (i = 0; pat[i]; ++i) if (pat[i] == '\\' && pat[i + 1] == ' ') STRMOVE(pat + i, pat + i + 1); flags |= EW_FILE | EW_EXEC | EW_SHELLCMD; if (pat[0] == '.' && (vim_ispathsep(pat[1]) || (pat[1] == '.' && vim_ispathsep(pat[2])))) path = (char_u *)"."; else { // For an absolute name we don't use $PATH. if (!mch_isFullName(pat)) path = vim_getenv((char_u *)"PATH", &mustfree); if (path == NULL) path = (char_u *)""; } // Go over all directories in $PATH. Expand matches in that directory and // collect them in "ga". When "." is not in $PATH also expand for the // current directory, to find "subdir/cmd". ga_init2(&ga, (int)sizeof(char *), 10); hash_init(&found_ht); for (s = path; ; s = e) { # if defined(MSWIN) e = vim_strchr(s, ';'); # else e = vim_strchr(s, ':'); # endif if (e == NULL) e = s + STRLEN(s); if (*s == NUL) { if (did_curdir) break; // Find directories in the current directory, path is empty. did_curdir = TRUE; flags |= EW_DIR; } else if (STRNCMP(s, ".", (int)(e - s)) == 0) { did_curdir = TRUE; flags |= EW_DIR; } else // Do not match directories inside a $PATH item. flags &= ~EW_DIR; l = e - s; if (l > MAXPATHL - 5) break; vim_strncpy(buf, s, l); add_pathsep(buf); l = STRLEN(buf); vim_strncpy(buf + l, pat, MAXPATHL - 1 - l); // Expand matches in one directory of $PATH. ret = expand_wildcards(1, &buf, num_file, file, flags); if (ret == OK) { if (ga_grow(&ga, *num_file) == FAIL) FreeWild(*num_file, *file); else { for (i = 0; i < *num_file; ++i) { char_u *name = (*file)[i]; if (STRLEN(name) > l) { // Check if this name was already found. hash = hash_hash(name + l); hi = hash_lookup(&found_ht, name + l, hash); if (HASHITEM_EMPTY(hi)) { // Remove the path that was prepended. STRMOVE(name, name + l); ((char_u **)ga.ga_data)[ga.ga_len++] = name; hash_add_item(&found_ht, hi, name, hash); name = NULL; } } vim_free(name); } vim_free(*file); } } if (*e != NUL) ++e; } *file = ga.ga_data; *num_file = ga.ga_len; vim_free(buf); vim_free(pat); if (mustfree) vim_free(path); hash_clear(&found_ht); return OK; } # if defined(FEAT_EVAL) /* * Call "user_expand_func()" to invoke a user defined Vim script function and * return the result (either a string or a List). */ static void * call_user_expand_func( void *(*user_expand_func)(char_u *, int, typval_T *), expand_T *xp, int *num_file, char_u ***file) { cmdline_info_T *ccline = get_cmdline_info(); int keep = 0; typval_T args[4]; sctx_T save_current_sctx = current_sctx; char_u *pat = NULL; void *ret; if (xp->xp_arg == NULL || xp->xp_arg[0] == '\0' || xp->xp_line == NULL) return NULL; *num_file = 0; *file = NULL; if (ccline->cmdbuff != NULL) { keep = ccline->cmdbuff[ccline->cmdlen]; ccline->cmdbuff[ccline->cmdlen] = 0; } pat = vim_strnsave(xp->xp_pattern, xp->xp_pattern_len); args[0].v_type = VAR_STRING; args[0].vval.v_string = pat; args[1].v_type = VAR_STRING; args[1].vval.v_string = xp->xp_line; args[2].v_type = VAR_NUMBER; args[2].vval.v_number = xp->xp_col; args[3].v_type = VAR_UNKNOWN; current_sctx = xp->xp_script_ctx; ret = user_expand_func(xp->xp_arg, 3, args); current_sctx = save_current_sctx; if (ccline->cmdbuff != NULL) ccline->cmdbuff[ccline->cmdlen] = keep; vim_free(pat); return ret; } /* * Expand names with a function defined by the user. */ static int ExpandUserDefined( expand_T *xp, regmatch_T *regmatch, int *num_file, char_u ***file) { char_u *retstr; char_u *s; char_u *e; int keep; garray_T ga; int skip; retstr = call_user_expand_func(call_func_retstr, xp, num_file, file); if (retstr == NULL) return FAIL; ga_init2(&ga, (int)sizeof(char *), 3); for (s = retstr; *s != NUL; s = e) { e = vim_strchr(s, '\n'); if (e == NULL) e = s + STRLEN(s); keep = *e; *e = NUL; skip = xp->xp_pattern[0] && vim_regexec(regmatch, s, (colnr_T)0) == 0; *e = keep; if (!skip) { if (ga_grow(&ga, 1) == FAIL) break; ((char_u **)ga.ga_data)[ga.ga_len] = vim_strnsave(s, (int)(e - s)); ++ga.ga_len; } if (*e != NUL) ++e; } vim_free(retstr); *file = ga.ga_data; *num_file = ga.ga_len; return OK; } /* * Expand names with a list returned by a function defined by the user. */ static int ExpandUserList( expand_T *xp, int *num_file, char_u ***file) { list_T *retlist; listitem_T *li; garray_T ga; retlist = call_user_expand_func(call_func_retlist, xp, num_file, file); if (retlist == NULL) return FAIL; ga_init2(&ga, (int)sizeof(char *), 3); // Loop over the items in the list. for (li = retlist->lv_first; li != NULL; li = li->li_next) { if (li->li_tv.v_type != VAR_STRING || li->li_tv.vval.v_string == NULL) continue; // Skip non-string items and empty strings if (ga_grow(&ga, 1) == FAIL) break; ((char_u **)ga.ga_data)[ga.ga_len] = vim_strsave(li->li_tv.vval.v_string); ++ga.ga_len; } list_unref(retlist); *file = ga.ga_data; *num_file = ga.ga_len; return OK; } # endif /* * Expand "file" for all comma-separated directories in "path". * Adds the matches to "ga". Caller must init "ga". */ void globpath( char_u *path, char_u *file, garray_T *ga, int expand_options) { expand_T xpc; char_u *buf; int i; int num_p; char_u **p; buf = alloc(MAXPATHL); if (buf == NULL) return; ExpandInit(&xpc); xpc.xp_context = EXPAND_FILES; // Loop over all entries in {path}. while (*path != NUL) { // Copy one item of the path to buf[] and concatenate the file name. copy_option_part(&path, buf, MAXPATHL, ","); if (STRLEN(buf) + STRLEN(file) + 2 < MAXPATHL) { # if defined(MSWIN) // Using the platform's path separator (\) makes vim incorrectly // treat it as an escape character, use '/' instead. if (*buf != NUL && !after_pathsep(buf, buf + STRLEN(buf))) STRCAT(buf, "/"); # else add_pathsep(buf); # endif STRCAT(buf, file); if (ExpandFromContext(&xpc, buf, &num_p, &p, WILD_SILENT|expand_options) != FAIL && num_p > 0) { ExpandEscape(&xpc, buf, num_p, p, WILD_SILENT|expand_options); if (ga_grow(ga, num_p) == OK) // take over the pointers and put them in "ga" for (i = 0; i < num_p; ++i) { ((char_u **)ga->ga_data)[ga->ga_len] = p[i]; ++ga->ga_len; } vim_free(p); } } } vim_free(buf); } #if defined(FEAT_EVAL) || defined(PROTO) /* * "getcompletion()" function */ void f_getcompletion(typval_T *argvars, typval_T *rettv) { char_u *pat; expand_T xpc; int filtered = FALSE; int options = WILD_SILENT | WILD_USE_NL | WILD_ADD_SLASH | WILD_NO_BEEP; if (argvars[2].v_type != VAR_UNKNOWN) filtered = tv_get_number_chk(&argvars[2], NULL); if (p_wic) options |= WILD_ICASE; // For filtered results, 'wildignore' is used if (!filtered) options |= WILD_KEEP_ALL; ExpandInit(&xpc); xpc.xp_pattern = tv_get_string(&argvars[0]); xpc.xp_pattern_len = (int)STRLEN(xpc.xp_pattern); xpc.xp_context = cmdcomplete_str_to_type(tv_get_string(&argvars[1])); if (xpc.xp_context == EXPAND_NOTHING) { if (argvars[1].v_type == VAR_STRING) semsg(_(e_invarg2), argvars[1].vval.v_string); else emsg(_(e_invarg)); return; } # if defined(FEAT_MENU) if (xpc.xp_context == EXPAND_MENUS) { set_context_in_menu_cmd(&xpc, (char_u *)"menu", xpc.xp_pattern, FALSE); xpc.xp_pattern_len = (int)STRLEN(xpc.xp_pattern); } # endif # ifdef FEAT_CSCOPE if (xpc.xp_context == EXPAND_CSCOPE) { set_context_in_cscope_cmd(&xpc, xpc.xp_pattern, CMD_cscope); xpc.xp_pattern_len = (int)STRLEN(xpc.xp_pattern); } # endif # ifdef FEAT_SIGNS if (xpc.xp_context == EXPAND_SIGN) { set_context_in_sign_cmd(&xpc, xpc.xp_pattern); xpc.xp_pattern_len = (int)STRLEN(xpc.xp_pattern); } # endif pat = addstar(xpc.xp_pattern, xpc.xp_pattern_len, xpc.xp_context); if ((rettv_list_alloc(rettv) != FAIL) && (pat != NULL)) { int i; ExpandOne(&xpc, pat, NULL, options, WILD_ALL_KEEP); for (i = 0; i < xpc.xp_numfiles; i++) list_append_string(rettv->vval.v_list, xpc.xp_files[i], -1); } vim_free(pat); ExpandCleanup(&xpc); } #endif // FEAT_EVAL