1 /* $Header: /p/tcsh/cvsroot/tcsh/tw.parse.c,v 3.139 2015/10/16 14:59:56 christos Exp $ */
3 * tw.parse.c: Everyone has taken a shot in this futile effort to
4 * lexically analyze a csh line... Well we cannot good
5 * a job as good as sh.lex.c; but we try. Amazing that
6 * it works considering how many hands have touched this code
9 * Copyright (c) 1980, 1991 The Regents of the University of California.
10 * All rights reserved.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 RCSID("$tcsh: tw.parse.c,v 3.139 2015/10/16 14:59:56 christos Exp $")
48 #endif /* WINNT_NATIVE */
49 #define EVEN(x) (((x) & 1) != 1)
51 #define DOT_NONE 0 /* Don't display dot files */
52 #define DOT_NOT 1 /* Don't display dot or dot-dot */
53 #define DOT_ALL 2 /* Display all dot files */
55 /* TW_NONE, TW_COMMAND, TW_VARIABLE, TW_LOGNAME, */
56 /* TW_FILE, TW_DIRECTORY, TW_VARLIST, TW_USER, */
57 /* TW_COMPLETION, TW_ALIAS, TW_SHELLVAR, TW_ENVVAR, */
58 /* TW_BINDING, TW_WORDLIST, TW_LIMIT, TW_SIGNAL */
59 /* TW_JOB, TW_EXPLAIN, TW_TEXT, TW_GRPNAME */
60 static void (*const tw_start_entry[]) (DIR *, const Char *) = {
61 tw_file_start, tw_cmd_start, tw_var_start, tw_logname_start,
62 tw_file_start, tw_file_start, tw_vl_start, tw_logname_start,
63 tw_complete_start, tw_alias_start, tw_var_start, tw_var_start,
64 tw_bind_start, tw_wl_start, tw_limit_start, tw_sig_start,
65 tw_job_start, tw_file_start, tw_file_start, tw_grpname_start
68 static int (*const tw_next_entry[]) (struct Strbuf *, struct Strbuf *,
70 tw_file_next, tw_cmd_next, tw_var_next, tw_logname_next,
71 tw_file_next, tw_file_next, tw_var_next, tw_logname_next,
72 tw_var_next, tw_var_next, tw_shvar_next, tw_envvar_next,
73 tw_bind_next, tw_wl_next, tw_limit_next, tw_sig_next,
74 tw_job_next, tw_file_next, tw_file_next, tw_grpname_next
77 static void (*const tw_end_entry[]) (void) = {
78 tw_dir_end, tw_dir_end, tw_dir_end, tw_logname_end,
79 tw_dir_end, tw_dir_end, tw_dir_end, tw_logname_end,
80 tw_dir_end, tw_dir_end, tw_dir_end, tw_dir_end,
81 tw_dir_end, tw_dir_end, tw_dir_end, tw_dir_end,
82 tw_dir_end, tw_dir_end, tw_dir_end, tw_grpname_end
87 /* Set to TRUE if recexact is set and an exact match is found
88 * along with other, longer, matches.
93 int match_unique_match = FALSE;
94 int non_unique_match = FALSE;
95 static int SearchNoDirErr = 0; /* t_search returns -2 if dir is unreadable */
97 /* state so if a completion is interrupted, the input line doesn't get
99 int InsideCompletion = 0;
101 /* do the expand or list on the command line -- SHOULD BE REPLACED */
103 static void extract_dir_and_name (const Char *, struct Strbuf *,
105 static int insert_meta (const Char *, const Char *,
107 static int tilde (struct Strbuf *, Char *);
108 static int expand_dir (const Char *, struct Strbuf *, DIR **,
110 static int nostat (Char *);
111 static Char filetype (Char *, Char *);
112 static int t_glob (Char ***, int);
113 static int c_glob (Char ***);
114 static int is_prefix (Char *, Char *);
115 static int is_prefixmatch (Char *, Char *, int);
116 static int is_suffix (Char *, Char *);
117 static int recognize (struct Strbuf *, const Char *, size_t,
119 static int ignored (Char *);
120 static int isadirectory (const Char *, const Char *);
121 static int tw_collect_items (COMMAND, int, struct Strbuf *,
122 struct Strbuf *, Char *, const Char *,
124 static int tw_collect (COMMAND, int, struct Strbuf *,
125 struct Strbuf *, Char *, Char *, int,
127 static Char tw_suffix (int, struct Strbuf *,const Char *,
129 static void tw_fixword (int, struct Strbuf *, Char *, Char *);
130 static void tw_list_items (int, int, int);
131 static void add_scroll_tab (Char *);
132 static void choose_scroll_tab (struct Strbuf *, int);
133 static void free_scroll_tab (void);
134 static int find_rows (Char *[], int, int);
138 * If we find a set command, then we break a=b to a= and word becomes
139 * b else, we don't break a=b. [don't use that; splits words badly and
140 * messes up tw_complete()]
142 #define isaset(c, w) ((w)[-1] == '=' && \
143 ((c)[0] == 's' && (c)[1] == 'e' && (c)[2] == 't' && \
144 ((c[3] == ' ' || (c)[3] == '\t'))))
147 /* TRUE if character must be quoted */
148 #define tricky(w) (cmap(w, _META | _DOL | _QF | _QB | _ESC | _GLOB) && w != '#')
149 /* TRUE if double quotes don't protect character */
150 #define tricky_dq(w) (cmap(w, _DOL | _QB))
154 * > 1: No. of items found
155 * = 1: Exactly one match / spelling corrected
156 * = 0: No match / spelling was correct
157 * < 0: Error (incl spelling correction impossible)
160 tenematch(Char *inputline, int num_read, COMMAND command)
162 struct Strbuf qline = Strbuf_INIT;
163 Char qu = 0, *pat = STRNULL;
164 size_t wp, word, wordp, cmd_start, oword = 0, ocmd_start = 0;
167 Char *oword_start = NULL;
169 int looking; /* what we are looking for */
170 int search_ret; /* what search returned for debugging */
173 str_end = &inputline[num_read];
174 cleanup_push(&qline, Strbuf_cleanup);
176 word_start = inputline;
177 word = cmd_start = 0;
178 for (cp = inputline; cp < str_end; cp++) {
179 if (!cmap(qu, _ESC)) {
180 if (cmap(*cp, _QF|_ESC)) {
181 if (qu == 0 || qu == *cp) {
186 if (qu != '\'' && cmap(*cp, _QB)) {
187 if ((backq ^= 1) != 0) {
188 ocmd_start = cmd_start;
189 oword_start = word_start;
192 word = cmd_start = qline.len + 1;
195 cmd_start = ocmd_start;
196 word_start = oword_start;
199 Strbuf_append1(&qline, *cp);
204 cmd_start = qline.len + 1;
206 /* Don't quote '/' to make the recognize stuff work easily */
207 /* Don't quote '$' in double quotes */
209 if (cmap(*cp, _ESC) && cp < str_end - 1 && cp[1] == HIST &&
211 Strbuf_append1(&qline, *++cp | QUOTE);
212 else if (qu && (tricky(*cp) || *cp == '~') &&
213 !(qu == '\"' && tricky_dq(*cp)))
214 Strbuf_append1(&qline, *cp | QUOTE);
216 Strbuf_append1(&qline, *cp);
217 if (ismetahash(qline.s[qline.len - 1])
218 /* || isaset(qline.s + cmd_start, qline.s + qline.len) */)
219 word = qline.len, word_start = cp + 1;
223 Strbuf_terminate(&qline);
227 * SPECIAL HARDCODED COMPLETIONS:
228 * first word of command -> TW_COMMAND
229 * everything else -> TW_ZERO
232 looking = starting_a_command(qline.s + word - 1, qline.s) ?
233 TW_COMMAND : TW_ZERO;
241 xprintf(CGETS(30, 1, "starting_a_command %d\n"), looking);
242 xprintf("\ncmd_start:%S:\n", qline.s + cmd_start);
243 xprintf("qline:%S:\n", qline.s);
245 for (p = qline.s; *p; p++)
246 xprintf("%c", *p & QUOTE ? '-' : ' ');
248 xprintf("word:%S:\n", qline.s + word);
250 for (p = qline.s + word; *p; p++)
251 xprintf("%c", *p & QUOTE ? '-' : ' ');
256 if ((looking == TW_COMMAND || looking == TW_ZERO) &&
257 (command == RECOGNIZE || command == LIST || command == SPELL ||
258 command == RECOGNIZE_SCROLL)) {
262 xprintf(CGETS(30, 2, "complete %d "), looking);
265 looking = tw_complete(qline.s + cmd_start, &p, &pat, looking, &suf);
268 xprintf(CGETS(30, 3, "complete %d %S\n"), looking, pat);
274 Char *items[2], **ptr;
278 case RECOGNIZE_SCROLL:
279 case RECOGNIZE_ALL: {
280 struct Strbuf wordbuf = Strbuf_INIT;
283 if (adrof(STRautocorrect)) {
284 if ((slshp = Strrchr(qline.s + wordp, '/')) != NULL &&
287 for (bptr = qline.s + wordp; bptr < slshp; bptr++) {
289 * do not try to correct spelling of words containing
290 * globbing characters
301 Strbuf_append(&wordbuf, qline.s + wordp);
302 Strbuf_terminate(&wordbuf);
303 cleanup_push(&wordbuf, Strbuf_cleanup);
304 search_ret = t_search(&wordbuf, command, looking, 1, pat, suf);
306 Strbuf_append(&qline, wordbuf.s);
307 Strbuf_terminate(&qline);
308 cleanup_until(&wordbuf);
311 if (search_ret == -2) {
314 rword = Strsave(slshp);
315 cleanup_push(rword, xfree);
316 if (slshp != STRNULL)
318 wordbuf = Strbuf_init;
319 Strbuf_append(&wordbuf, qline.s + wordp);
320 Strbuf_terminate(&wordbuf);
321 cleanup_push(&wordbuf, Strbuf_cleanup);
322 search_ret = spell_me(&wordbuf, looking, pat, suf);
323 if (search_ret == 1) {
324 Strbuf_append(&wordbuf, rword);
325 Strbuf_terminate(&wordbuf);
326 wp = wordp + wordbuf.len;
327 search_ret = t_search(&wordbuf, command, looking, 1, pat, suf);
330 Strbuf_append(&qline, wordbuf.s);
331 Strbuf_terminate(&qline);
332 cleanup_until(rword);
334 if (qline.s[wp] != '\0' &&
335 insert_meta(word_start, str_end, qline.s + word, !qu) < 0)
336 goto err; /* error inserting */
341 struct Strbuf wordbuf = Strbuf_INIT;
343 for (bptr = word_start; bptr < str_end; bptr++) {
345 * do not try to correct spelling of words containing globbing
353 Strbuf_append(&wordbuf, qline.s + wordp);
354 Strbuf_terminate(&wordbuf);
355 cleanup_push(&wordbuf, Strbuf_cleanup);
358 * Don't try to spell things that we know they are correct.
359 * Trying to spell can hang when we have NFS mounted hung
362 if ((looking == TW_COMMAND) && Strchr(wordbuf.s, '/') != NULL) {
363 if (executable(NULL, wordbuf.s, 0)) {
364 cleanup_until(&wordbuf);
370 search_ret = spell_me(&wordbuf, looking, pat, suf);
372 Strbuf_append(&qline, wordbuf.s);
373 Strbuf_terminate(&qline);
374 cleanup_until(&wordbuf);
375 if (search_ret == 1) {
376 if (insert_meta(word_start, str_end, qline.s + word, !qu) < 0)
377 goto err; /* error inserting */
383 do_help(qline.s + cmd_start);
389 items[0] = Strsave(qline.s + wordp);
391 cleanup_push(items[0], xfree);
393 count = (looking == TW_COMMAND && Strchr(qline.s + wordp, '/') == 0) ?
395 t_glob(&ptr, looking == TW_COMMAND);
396 cleanup_until(items[0]);
398 cleanup_push(ptr, blk_cleanup);
401 print_by_column(STRNULL, ptr, count, 0);
403 DeleteBack(str_end - word_start);/* get rid of old word */
404 for (i = 0; i < count; i++)
405 if (ptr[i] && *ptr[i]) {
406 (void) quote(ptr[i]);
407 if (insert_meta(0, 0, ptr[i], 0) < 0 ||
408 InsertStr(STRspace) < 0) {
411 goto err; /* error inserting */
422 bptr = dollar(qline.s + word);
424 if (insert_meta(word_start, str_end, bptr, !qu) < 0) {
426 goto err; /* error inserting */
436 if ((bptr = dnormalize(qline.s + wordp, symlinks == SYM_IGNORE ||
437 symlinks == SYM_EXPAND)) != NULL) {
438 if (insert_meta(word_start, str_end, bptr, !qu) < 0) {
440 goto err; /* error inserting */
449 case COMMAND_NORMALIZE: {
453 found = cmd_expand(qline.s + wordp, &p);
460 if (insert_meta(word_start, str_end, p, !qu) < 0) {
462 goto err; /* error inserting */
471 struct Strbuf wordbuf = Strbuf_INIT;
473 Strbuf_append(&wordbuf, qline.s + wordp);
474 Strbuf_terminate(&wordbuf);
475 cleanup_push(&wordbuf, Strbuf_cleanup);
476 search_ret = t_search(&wordbuf, LIST, looking, 1, pat, suf);
478 Strbuf_append(&qline, wordbuf.s);
479 Strbuf_terminate(&qline);
480 cleanup_until(&wordbuf);
485 xprintf(CGETS(30, 4, "%s: Internal match error.\n"), progname);
489 cleanup_until(&qline);
493 cleanup_until(&qline);
495 } /* end tenematch */
499 * Return a list of files that match the pattern
502 t_glob(Char ***v, int cmd)
513 getexit(osetexit); /* make sure to come back here */
514 omark = cleanup_push_mark();
516 *v = globall(*v, gflag);
517 cleanup_pop_mark(omark);
534 for (i = 0, fwd = 0; av[i] != NULL; i++)
535 if (!executable(NULL, av[i], 0)) {
553 * Return a list of commands that match the pattern
558 struct blk_buf av = BLK_BUF_INIT;
559 struct Strbuf cmd = Strbuf_INIT, dir = Strbuf_INIT;
566 cleanup_push(&av, bb_cleanup);
567 cleanup_push(&cmd, Strbuf_cleanup);
568 cleanup_push(&dir, Strbuf_cleanup);
570 tw_cmd_start(NULL, NULL);
571 while (cmd.len = 0, tw_cmd_next(&cmd, &dir, &flag) != 0) {
572 Strbuf_terminate(&cmd);
573 if (Gmatch(cmd.s, pat))
574 bb_append(&av, Strsave(cmd.s));
586 * change the word before the cursor.
587 * cp must point to the start of the unquoted word.
588 * cpend to the end of it.
589 * word is the text that has to be substituted.
591 * try to keep all the quote characters of the user's input.
592 * change quote type only if necessary.
595 insert_meta(const Char *cp, const Char *cpend, const Char *word,
598 struct Strbuf buffer = Strbuf_INIT;
601 int in_sync = (cp != NULL);
603 int ndel = (int) (cp ? cpend - cp : 0);
607 for (wptr = word;;) {
610 if (in_sync && !cmap(qu, _ESC) && cmap(*cp, _QF|_ESC))
611 if (qu == 0 || qu == *cp) {
613 Strbuf_append1(&buffer, *cp++);
621 #if INVALID_BYTE != 0
622 /* add checking INVALID_BYTE for FIX UTF32 */
623 if ((w & INVALID_BYTE) != INVALID_BYTE) /* w < INVALID_BYTE */
627 if (cmap(w, _ESC | _QF))
628 wq = QUOTE; /* quotes are always quoted */
630 if (!wq && qu && tricky(w) && !(qu == '\"' && tricky_dq(w))) {
631 /* We have to unquote the character */
634 buffer.s[buffer.len - 1] = w;
636 Strbuf_append1(&buffer, qu);
637 Strbuf_append1(&buffer, w);
641 Strbuf_append1(&buffer, qu);
643 } else if (qu && w == qu) {
645 if (buffer.len != 0 && buffer.s[buffer.len - 1] == qu) {
646 /* User misunderstanding :) */
647 buffer.s[buffer.len - 1] = '\\';
648 Strbuf_append1(&buffer, w);
651 Strbuf_append1(&buffer, qu);
652 Strbuf_append1(&buffer, '\\');
653 Strbuf_append1(&buffer, w);
654 Strbuf_append1(&buffer, qu);
657 else if (wq && qu == '\"' && tricky_dq(w)) {
659 Strbuf_append1(&buffer, qu);
660 Strbuf_append1(&buffer, '\\');
661 Strbuf_append1(&buffer, w);
662 Strbuf_append1(&buffer, qu);
664 ((!qu && (tricky(w) || (w == HISTSUB && HISTSUB != '\0'
665 && buffer.len == 0))) ||
666 (!cmap(qu, _ESC) && w == HIST && HIST != '\0'))) {
668 Strbuf_append1(&buffer, '\\');
669 Strbuf_append1(&buffer, w);
671 if (in_sync && *cp++ != w)
673 Strbuf_append1(&buffer, w);
679 if (closequotes && qu && !cmap(qu, _ESC))
680 Strbuf_append1(&buffer, w);
681 bptr = Strbuf_finish(&buffer);
684 res = InsertStr(bptr);
687 } /* end insert_meta */
692 * return true if check matches initial chars in template
693 * This differs from PWB imatch in that if check is null
694 * it matches anything
697 is_prefix(Char *check, Char *template)
699 for (; *check; check++, template++)
700 if ((*check & TRIM) != (*template & TRIM))
703 } /* end is_prefix */
707 * return true if check matches initial chars in template
708 * This differs from PWB imatch in that if check is null
709 * it matches anything
710 * and matches on shortening of commands
713 is_prefixmatch(Char *check, Char *template, int enhanced)
715 Char MCH1, MCH2, LCH1, LCH2;
717 for (; *check; check++, template++) {
718 if ((*check & TRIM) != (*template & TRIM)) {
719 MCH1 = (*check & TRIM);
720 MCH2 = (*template & TRIM);
721 LCH1 = Isupper(MCH1) ? Tolower(MCH1) :
722 enhanced == 2 && MCH1 == '_' ? '-' : MCH1;
723 LCH2 = Isupper(MCH2) ? Tolower(MCH2) :
724 enhanced == 2 && MCH2 == '_' ? '-' : MCH2;
725 if (MCH1 != MCH2 && MCH1 != LCH2 &&
726 (LCH1 != MCH2 || enhanced == 2)) {
727 if (enhanced && ((*check & TRIM) == '-' ||
728 (*check & TRIM) == '.' ||
729 (*check & TRIM) == '_')) {
730 MCH1 = MCH2 = (*check & TRIM);
731 if (MCH1 == '_' && enhanced != 2) {
733 } else if (MCH1 == '-') {
736 for (; *template && (*template & TRIM) != MCH1 &&
737 (*template & TRIM) != MCH2; template++)
749 } /* end is_prefixmatch */
753 * Return true if the chars in template appear at the
754 * end of check, I.e., are it's suffix.
757 is_suffix(Char *check, Char *template)
761 t = Strend(template);
766 if (c == check || (*--t & TRIM) != (*--c & TRIM))
769 } /* end is_suffix */
773 * Return true if this is an ignored item
781 if ((vp = adrof(STRfignore)) == NULL || (cp = vp->vec) == NULL)
783 for (; *cp != NULL; cp++)
784 if (is_suffix(item, *cp))
791 /* starting_a_command():
792 * return true if the command starting at wordstart is a command
795 starting_a_command(Char *wordstart, Char *inputline)
797 Char *ptr, *ncmdstart;
800 cmdstart[] = {'`', ';', '&', '(', '|', '\0'},
801 cmdalive[] = {' ', '\t', '\'', '"', '<', '>', '\0'};
804 * Find if the number of backquotes is odd or even.
806 for (ptr = wordstart, count = 0;
808 count += (*ptr-- == '`'))
811 * if the number of backquotes is even don't include the backquote char in
812 * the list of command starting delimiters [if it is zero, then it does not
815 ncmdstart = cmdstart + EVEN(count);
818 * look for the characters previous to this word if we find a command
819 * starting delimiter we break. if we find whitespace and another previous
820 * word then we are not a command
822 * count is our state machine: 0 looking for anything 1 found white-space
825 for (count = 0; wordstart >= inputline; wordstart--) {
826 if (*wordstart == '\0')
828 if (Strchr(ncmdstart, *wordstart)) {
829 for (ptr = wordstart, bsl = 0; *(--ptr) == '\\'; bsl++);
839 if ((ptr = Strchr(cmdalive, *wordstart)) != NULL)
841 if (count == 1 && !ptr)
845 if (wordstart > inputline)
846 switch (*wordstart) {
847 case '&': /* Look for >& */
848 while (wordstart > inputline &&
849 (*--wordstart == ' ' || *wordstart == '\t'))
851 if (*wordstart == '>')
854 case '(': /* check for foreach, if etc. */
855 while (wordstart > inputline &&
856 (*--wordstart == ' ' || *wordstart == '\t'))
858 if (!iscmdmeta(*wordstart) &&
859 (*wordstart != ' ' && *wordstart != '\t'))
866 } /* end starting_a_command */
870 * Object: extend what user typed up to an ambiguity.
872 * On first match, copy full item (assume it'll be the only match)
873 * On subsequent matches, shorten exp_name to the first
874 * character mismatch between exp_name and item.
875 * If we shorten it back to the prefix length, stop searching.
878 recognize(struct Strbuf *exp_name, const Char *item, size_t name_length,
879 int numitems, int enhanced, int igncase)
881 Char MCH1, MCH2, LCH1, LCH2;
886 if (numitems == 1) { /* 1st match */
888 Strbuf_append(exp_name, item);
889 Strbuf_terminate(exp_name);
892 if (!enhanced && !igncase) {
893 for (x = exp_name->s, ent = item; *x && (*x & TRIM) == (*ent & TRIM);
897 for (x = exp_name->s, ent = item; *x; x++, ent++) {
900 LCH1 = Isupper(MCH1) ? Tolower(MCH1) : MCH1;
901 LCH2 = Isupper(MCH2) ? Tolower(MCH2) : MCH2;
903 if (LCH1 == MCH2 || (MCH1 == '_' && MCH2 == '-'))
905 else if (LCH1 != LCH2)
911 *x = '\0'; /* Shorten at 1st char diff */
912 exp_name->len = x - exp_name->s;
913 if (!(match_unique_match || is_set(STRrecexact) || (enhanced && *ent)) &&
914 len == name_length) /* Ambiguous to prefix? */
915 return (-1); /* So stop now and save time */
917 } /* end recognize */
920 /* tw_collect_items():
921 * Collect items that match target.
923 * Returns the spelling distance of the closest match.
925 * Returns the number of items found.
926 * If none found, but some ignored items were found,
927 * It returns the -number of ignored items.
930 tw_collect_items(COMMAND command, int looking, struct Strbuf *exp_dir,
931 struct Strbuf *exp_name, Char *target, const Char *pat,
934 int done = FALSE; /* Search is done */
935 int showdots; /* Style to show dot files */
936 int nignored = 0; /* Number of fignored items */
937 int numitems = 0; /* Number of matched items */
938 size_t name_length = Strlen(target); /* Length of prefix (file name) */
939 int exec_check = flags & TW_EXEC_CHK;/* need to check executability */
940 int dir_check = flags & TW_DIR_CHK; /* Need to check for directories */
941 int text_check = flags & TW_TEXT_CHK;/* Need to check for non-directories */
942 int dir_ok = flags & TW_DIR_OK; /* Ignore directories? */
943 int gpat = flags & TW_PAT_OK; /* Match against a pattern */
944 int ignoring = flags & TW_IGN_OK; /* Use fignore? */
945 int d = 4, nd; /* Spelling distance */
949 struct Strbuf buf = Strbuf_INIT, item = Strbuf_INIT;
958 if ((ptr = varval(STRlistflags)) != STRNULL)
971 if (looking == TW_COMMAND
972 && (vp = adrof(STRautorehash)) != NULL && vp->vec != NULL)
973 for (cp = vp->vec; *cp; cp++)
974 if (Strcmp(*cp, STRalways) == 0
975 || (Strcmp(*cp, STRcorrect) == 0 && command == SPELL)
976 || (Strcmp(*cp, STRcomplete) == 0 && command != SPELL)) {
978 tw_cmd_start(NULL, NULL);
982 cleanup_push(&item, Strbuf_cleanup);
983 cleanup_push(&buf, Strbuf_cleanup);
986 tw_next_entry[looking](&item, exp_dir, &flags) != 0)) {
987 Strbuf_terminate(&item);
989 xprintf("item = %S\n", item.s);
996 * Don't match . files on null prefix match
998 if (showdots == DOT_NOT && (ISDOT(item.s) || ISDOTDOT(item.s)))
1000 if (name_length == 0 && item.s[0] == '.' && showdots == DOT_NONE)
1005 #if defined(_UWIN) || defined(__CYGWIN__)
1007 * Turn foo.{exe,com,bat,cmd} into foo since UWIN's readdir returns
1008 * the file with the .exe, .com, .bat, .cmd extension
1010 * Same for Cygwin, but only for .exe and .com extension.
1014 static const char *rext[] = { ".exe", ".com" };
1016 static const char *rext[] = { ".exe", ".bat", ".com", ".cmd" };
1018 size_t exti = Strlen(item.s);
1021 char *ext = short2str(&item.s[exti -= 4]);
1024 for (i = 0; i < sizeof(rext) / sizeof(rext[0]); i++)
1025 if (strcasecmp(ext, rext[i]) == 0) {
1027 Strbuf_terminate(&item);
1032 #endif /* _UWIN || __CYGWIN__ */
1033 exec_check = flags & TW_EXEC_CHK;
1034 dir_ok = flags & TW_DIR_OK;
1048 case SPELL: /* correct the spelling of the last bit */
1049 if (name_length == 0) {/* zero-length word can't be misspelled */
1050 exp_name->len = 0; /* (not trying is important for ~) */
1051 Strbuf_terminate(exp_name);
1056 if (gpat && !Gmatch(item.s, pat))
1059 * Swapped the order of the spdist() arguments as suggested
1060 * by eeide@asylum.cs.utah.edu (Eric Eide)
1062 nd = spdist(target, item.s); /* test the item against original */
1063 if (nd <= d && nd != 4) {
1064 if (!(exec_check && !executable(exp_dir->s, item.s, dir_ok))) {
1066 Strbuf_append(exp_name, item.s);
1067 Strbuf_terminate(exp_name);
1069 if (d == 0) /* if found it exactly */
1074 if (spdir(exp_name, exp_dir->s, item.s, target)) {
1076 !executable(exp_dir->s, exp_name->s, dir_ok))
1080 * We don't want to stop immediately, because
1081 * we might find an exact/better match later.
1094 case RECOGNIZE_SCROLL:
1096 if ((vp = adrof(STRcomplete)) != NULL && vp->vec != NULL)
1097 for (cp = vp->vec; *cp; cp++) {
1098 if (Strcmp(*cp, STREnhance) == 0)
1100 else if (Strcmp(*cp, STRigncase) == 0)
1102 else if (Strcmp(*cp, STRenhance) == 0)
1106 if (enhanced || igncase) {
1107 if (!is_prefixmatch(target, item.s, enhanced))
1110 if (!is_prefix(target, item.s))
1114 if (exec_check && !executable(exp_dir->s, item.s, dir_ok))
1117 if (dir_check && !isadirectory(exp_dir->s, item.s))
1120 if (text_check && isadirectory(exp_dir->s, item.s))
1124 * Only pattern match directories if we're checking
1127 if (gpat && !Gmatch(item.s, pat) &&
1128 (dir_check || !isadirectory(exp_dir->s, item.s)))
1132 * Remove duplicates in command listing and completion
1133 * AFEB added code for TW_LOGNAME and TW_USER cases
1135 if (looking == TW_COMMAND || looking == TW_LOGNAME
1136 || looking == TW_USER || command == LIST) {
1138 Strbuf_append(&buf, item.s);
1141 if (!(dir_ok && exec_check))
1143 if (filetype(exp_dir->s, item.s) == '/')
1144 Strbuf_append1(&buf, '/');
1149 Strbuf_append1(&buf, filetype(exp_dir->s, item.s));
1155 Strbuf_terminate(&buf);
1156 if ((looking == TW_COMMAND || looking == TW_USER
1157 || looking == TW_LOGNAME) && tw_item_find(buf.s))
1160 /* maximum length 1 (NULL) + 1 (~ or $) + 1 (filetype) */
1162 if (command == LIST)
1167 if (command == RECOGNIZE || command == RECOGNIZE_ALL ||
1168 command == RECOGNIZE_SCROLL) {
1169 if (ignoring && ignored(item.s)) {
1173 else if (command == RECOGNIZE_SCROLL) {
1174 add_scroll_tab(item.s);
1178 if (match_unique_match || is_set(STRrecexact)) {
1179 if (StrQcmp(target, item.s) == 0) { /* EXACT match */
1181 Strbuf_append(exp_name, item.s);
1182 Strbuf_terminate(exp_name);
1183 numitems = 1; /* fake into expanding */
1184 non_unique_match = TRUE;
1189 if (recognize(exp_name, item.s, name_length, ++numitems,
1191 if (command != RECOGNIZE_SCROLL)
1193 if (enhanced && exp_name->len < name_length) {
1195 Strbuf_append(exp_name, target);
1196 Strbuf_terminate(exp_name);
1205 xprintf("done item = %S\n", item.s);
1208 cleanup_until(&item);
1210 if (command == RECOGNIZE_SCROLL) {
1211 if ((cnt <= curchoice) || (curchoice == -1)) {
1215 } else if (numitems > 1) {
1217 curchoice = cnt - 1;
1218 choose_scroll_tab(exp_name, cnt);
1224 if (command == SPELL)
1227 if (ignoring && numitems == 0 && nignored > 0)
1236 * Find and return the appropriate suffix character
1240 tw_suffix(int looking, struct Strbuf *word, const Char *exp_dir, Char *exp_name)
1246 (void) strip(exp_name);
1255 * Don't consider array variables or empty variables
1257 if ((vp = adrof(exp_name)) != NULL && vp->vec != NULL) {
1258 if ((ptr = vp->vec[0]) == NULL || *ptr == '\0' ||
1262 else if ((ptr = tgetenv(exp_name)) == NULL || *ptr == '\0')
1265 if ((dol = Strrchr(word->s, '$')) != 0 &&
1266 dol[1] == '{' && Strchr(dol, '}') == NULL)
1269 return isadirectory(exp_dir, ptr) ? '/' : ' ';
1277 return isadirectory(exp_dir, exp_name) ? '/' : ' ';
1297 } /* end tw_suffix */
1301 * Repair a word after a spalling or a recognizwe
1304 tw_fixword(int looking, struct Strbuf *word, Char *dir, Char *exp_name)
1311 Strbuf_append1(word, '~');
1315 if ((ptr = Strrchr(word->s, '$')) != NULL) {
1316 if (ptr[1] == '{') ptr++;
1317 word->len = ptr + 1 - word->s; /* Delete after the dollar */
1326 Strbuf_append(word, dir); /* put back dir part */
1334 (void) quote(exp_name);
1335 Strbuf_append(word, exp_name); /* add extended name */
1336 Strbuf_terminate(word);
1337 } /* end tw_fixword */
1341 * Collect items. Return -1 in case we were interrupted or
1342 * the return value of tw_collect
1343 * This is really a wrapper for tw_collect_items, serving two
1345 * 1. Handles interrupt cleanups.
1346 * 2. Retries if we had no matches, but there were ignored matches
1349 tw_collect(COMMAND command, int looking, struct Strbuf *exp_dir,
1350 struct Strbuf *exp_name, Char *target, Char *pat, int flags,
1357 xprintf("target = %S\n", target);
1362 volatile size_t omark;
1364 (*tw_start_entry[looking])(dir_fd, pat);
1365 InsideCompletion = 1;
1367 cleanup_pop_mark(omark);
1369 /* interrupted, clean up */
1371 ni = -1; /* flag error */
1374 omark = cleanup_push_mark();
1375 ni = tw_collect_items(command, looking, exp_dir, exp_name, target, pat,
1376 ni >= 0 ? flags : flags & ~TW_IGN_OK);
1377 cleanup_pop_mark(omark);
1382 InsideCompletion = 0;
1383 #if defined(SOLARIS2) && defined(i386) && !defined(__GNUC__)
1384 /* Compiler bug? (from PWP) */
1385 if ((looking == TW_LOGNAME) || (looking == TW_USER))
1387 else if (looking == TW_GRPNAME)
1391 #else /* !(SOLARIS2 && i386 && !__GNUC__) */
1392 (*tw_end_entry[looking])();
1393 #endif /* !(SOLARIS2 && i386 && !__GNUC__) */
1395 } /* end tw_collect */
1399 * List the items that were found
1401 * NOTE instead of looking at numerical vars listmax and listmaxrows
1402 * we can look at numerical var listmax, and have a string value
1403 * listmaxtype (or similar) than can have values 'items' and 'rows'
1404 * (by default interpreted as 'items', for backwards compatibility)
1407 tw_list_items(int looking, int numitems, int list_max)
1416 if ((ptr = varval(STRlistmax)) != STRNULL) {
1418 if (!Isdigit(*ptr)) {
1422 max_items = max_items * 10 + *ptr++ - '0';
1424 if ((max_items > 0) && (numitems > max_items) && list_max)
1425 max_items = numitems;
1430 if (max_items == 0 && (ptr = varval(STRlistmaxrows)) != STRNULL) {
1434 if (!Isdigit(*ptr)) {
1438 max_rows = max_rows * 10 + *ptr++ - '0';
1440 if (max_rows != 0 && looking != TW_JOB)
1441 rows = find_rows(tw_item_get(), numitems, TRUE);
1443 rows = numitems; /* underestimate for lines wider than the termH */
1444 if ((max_rows > 0) && (rows > max_rows) && list_max)
1451 if (max_items || max_rows) {
1457 name = CGETS(30, 5, "items");
1461 name = CGETS(30, 6, "rows");
1465 sname = strsave(name);
1466 cleanup_push(sname, xfree);
1467 xprintf(CGETS(30, 7, "There are %d %s, list them anyway? [n/y] "),
1469 cleanup_until(sname);
1471 /* We should be in Rawmode here, so no \n to catch */
1472 (void) xread(SHIN, &tc, 1);
1473 xprintf("%c\r\n", tc); /* echo the char, do a newline */
1475 * Perhaps we should use the yesexpr from the
1478 if (strchr(CGETS(30, 13, "Yy"), tc) == NULL)
1482 if (looking != TW_SIGNAL)
1483 qsort(tw_item_get(), numitems, sizeof(Char *), fcompare);
1484 if (looking != TW_JOB)
1485 print_by_column(STRNULL, tw_item_get(), numitems, TRUE);
1488 * print one item on every line because jobs can have spaces
1489 * and it is confusing.
1492 Char **w = tw_item_get();
1494 for (i = 0; i < numitems; i++) {
1495 xprintf("%S", w[i]);
1501 } /* end tw_list_items */
1505 * Perform a RECOGNIZE, LIST or SPELL command on string "word".
1508 * >= 0: SPELL command: "distance" (see spdist())
1509 * other: No. of items found
1510 * < 0: Error (message or beep is output)
1514 t_search(struct Strbuf *word, COMMAND command, int looking, int list_max,
1515 Char *pat, eChar suf)
1517 int numitems, /* Number of items matched */
1518 flags = 0, /* search flags */
1519 gpat = pat[0] != '\0', /* Glob pattern search */
1520 res; /* Return value */
1521 struct Strbuf exp_dir = Strbuf_INIT;/* dir after ~ expansion */
1522 struct Strbuf dir = Strbuf_INIT; /* /x/y/z/ part in /x/y/z/f */
1523 struct Strbuf exp_name = Strbuf_INIT;/* the recognized (extended) */
1524 Char *name, /* f part in /d/d/d/f name */
1525 *target; /* Target to expand/correct/list */
1529 * bugfix by Marty Grossman (grossman@CC5.BBN.COM): directory listing can
1530 * dump core when interrupted
1534 non_unique_match = FALSE; /* See the recexact code below */
1536 extract_dir_and_name(word->s, &dir, &name);
1537 cleanup_push(&dir, Strbuf_cleanup);
1538 cleanup_push(&name, xfree_indirect);
1541 * SPECIAL HARDCODED COMPLETIONS:
1542 * foo$variable -> TW_VARIABLE
1543 * ~user -> TW_LOGNAME
1546 if ((*word->s == '~') && (Strchr(word->s, '/') == NULL)) {
1547 looking = TW_LOGNAME;
1549 gpat = 0; /* Override pattern mechanism */
1551 else if ((target = Strrchr(name, '$')) != 0 &&
1552 (target[1] != '{' || Strchr(target, '}') == NULL) &&
1553 (Strchr(name, '/') == NULL)) {
1555 if (target[0] == '{') target++;
1556 looking = TW_VARIABLE;
1557 gpat = 0; /* Override pattern mechanism */
1563 * Try to figure out what we should be looking for
1565 if (looking & TW_PATH) {
1566 gpat = 0; /* pattern holds the pathname to be used */
1567 Strbuf_append(&exp_dir, pat);
1568 if (exp_dir.len != 0 && exp_dir.s[exp_dir.len - 1] != '/')
1569 Strbuf_append1(&exp_dir, '/');
1570 Strbuf_append(&exp_dir, dir.s);
1572 Strbuf_terminate(&exp_dir);
1573 cleanup_push(&exp_dir, Strbuf_cleanup);
1575 switch (looking & ~TW_PATH) {
1585 if (Strchr(word->s, '/') || (looking & TW_PATH)) {
1587 flags |= TW_EXEC_CHK;
1591 /* PWP: don't even bother when doing ALL of the commands */
1592 if (looking == TW_COMMAND && word->len == 0) {
1602 gpat = 0; /* pattern holds the name of the variable */
1606 if (command == LIST && pat != NULL) {
1620 * let fignore work only when we are not using a pattern
1622 flags |= (gpat == 0) ? TW_IGN_OK : TW_PAT_OK;
1625 xprintf(CGETS(30, 8, "looking = %d\n"), looking);
1644 if ((res = expand_dir(dir.s, &exp_dir, &dir_fd, command)) != 0)
1649 flags |= TW_DIR_CHK;
1653 * This is supposed to expand the directory stack.
1656 * 2. directories with the same name
1662 * Supposed to do delayed expansion, but it is inconsistent
1663 * from a user-interface point of view, since it does not
1664 * immediately obey addsuffix
1666 if ((res = expand_dir(dir.s, &exp_dir, &dir_fd, command)) != 0)
1668 if (isadirectory(exp_dir.s, name)) {
1669 if (exp_dir.len != 0 || name[0] != '\0') {
1670 Strbuf_append(&dir, name);
1671 if (dir.s[dir.len - 1] != '/')
1672 Strbuf_append1(&dir, '/');
1673 Strbuf_terminate(&dir);
1674 if ((res = expand_dir(dir.s, &exp_dir, &dir_fd, command)) != 0)
1676 if (word->len != 0 && word->s[word->len - 1] != '/') {
1677 Strbuf_append1(word, '/');
1678 Strbuf_terminate(word);
1684 if ((res = expand_dir(dir.s, &exp_dir, &dir_fd, command)) != 0)
1689 flags |= TW_TEXT_CHK;
1692 if ((res = expand_dir(dir.s, &exp_dir, &dir_fd, command)) != 0)
1696 case TW_PATH | TW_TEXT:
1697 case TW_PATH | TW_FILE:
1698 case TW_PATH | TW_DIRECTORY:
1699 case TW_PATH | TW_COMMAND:
1700 if ((dir_fd = opendir(short2str(exp_dir.s))) == NULL) {
1701 if (command == RECOGNIZE)
1703 xprintf("%S: %s", exp_dir.s, strerror(errno));
1704 if (command != RECOGNIZE)
1710 if (exp_dir.len != 0 && exp_dir.s[exp_dir.len - 1] != '/') {
1711 Strbuf_append1(&exp_dir, '/');
1712 Strbuf_terminate(&exp_dir);
1715 looking &= ~TW_PATH;
1719 flags |= TW_TEXT_CHK;
1726 flags |= TW_DIR_CHK;
1731 target = name = Strsave(word->s); /* so it can match things */
1735 abort(); /* Cannot happen */
1741 user_name = word->s + 1;
1746 user_name = word->s;
1749 * Check if the spelling was already correct
1750 * From: Rob McMahon <cudcv@cu.warwick.ac.uk>
1752 if (command == SPELL && xgetpwnam(short2str(user_name)) != NULL) {
1760 target = name = Strsave(user_name);
1766 target = name = Strsave(word->s); /* so it can match things */
1770 xprintf(CGETS(30, 9,
1771 "\n%s internal error: I don't know what I'm looking for!\n"),
1778 cleanup_push(&exp_name, Strbuf_cleanup);
1779 numitems = tw_collect(command, looking, &exp_dir, &exp_name, target, pat,
1787 case RECOGNIZE_SCROLL:
1791 Strbuf_terminate(&exp_name);
1792 tw_fixword(looking, word, dir.s, exp_name.s);
1794 if (!match_unique_match && is_set(STRaddsuffix) && numitems == 1) {
1796 case 0: /* Automatic suffix */
1797 Strbuf_append1(word,
1798 tw_suffix(looking, word, exp_dir.s, exp_name.s));
1801 case CHAR_ERR: /* No suffix */
1804 default: /* completion specified suffix */
1805 Strbuf_append1(word, suf);
1808 Strbuf_terminate(word);
1813 tw_list_items(looking, numitems, list_max);
1818 Strbuf_terminate(&exp_name);
1819 tw_fixword(looking, word, dir.s, exp_name.s);
1823 xprintf("Bad tw_command\n");
1829 cleanup_until(&dir);
1831 } /* end t_search */
1834 /* extract_dir_and_name():
1835 * parse full path in file into 2 parts: directory and file names
1836 * Should leave final slash (/) at end of dir.
1839 extract_dir_and_name(const Char *path, struct Strbuf *dir, Char **name)
1843 p = Strrchr(path, '/');
1846 p = Strrchr(path, ':');
1847 #endif /* WINNT_NATIVE */
1849 *name = Strsave(path);
1853 Strbuf_appendn(dir, path, p - path);
1855 Strbuf_terminate(dir);
1856 } /* end extract_dir_and_name */
1860 * expand "/$old1/$old2/old3/"
1861 * to "/value_of_old1/value_of_old2/old3/"
1864 dollar(const Char *old)
1866 struct Strbuf buf = Strbuf_INIT;
1870 Strbuf_append1(&buf, *old++);
1872 if (expdollar(&buf, &old, QUOTE) == 0) {
1878 return Strbuf_finish(&buf);
1883 * expand ~person/foo to home_directory_of_person/foo
1884 * or =<stack-entry> to <dir in stack entry>
1887 tilde(struct Strbuf *new, Char *old)
1897 for (o = old; *o && *o != '/'; o++)
1899 name = Strnsave(old, o - old);
1900 home = gethdir(name);
1904 Strbuf_append(new, home);
1906 /* If the home directory expands to "/", we do
1907 * not want to create "//" by appending a slash from o.
1909 if (new->s[0] == '/' && new->len == 1 && *o == '/')
1911 Strbuf_append(new, o);
1916 if ((p = globequal(old)) == NULL)
1919 Strbuf_append(new, p);
1926 Strbuf_append(new, old);
1929 Strbuf_terminate(new);
1933 Strbuf_terminate(new);
1939 * Open the directory given, expanding ~user and $var
1940 * Optionally normalize the path given
1943 expand_dir(const Char *dir, struct Strbuf *edir, DIR **dfd, COMMAND cmd)
1949 cleanup_push(tdir, xfree);
1951 (tilde(edir, tdir) != 0) ||
1952 !(nd = dnormalize(edir->len ? edir->s : STRdot,
1953 symlinks == SYM_IGNORE || symlinks == SYM_EXPAND)) ||
1954 ((*dfd = opendir(short2str(nd))) == NULL)) {
1956 if (cmd == SPELL || SearchNoDirErr) {
1957 cleanup_until(tdir);
1961 * From: Amos Shapira <amoss@cs.huji.ac.il>
1962 * Print a better message when completion fails
1964 xprintf("\n%S %s\n", edir->len ? edir->s : (tdir ? tdir : dir),
1965 (errno == ENOTDIR ? CGETS(30, 10, "not a directory") :
1966 (errno == ENOENT ? CGETS(30, 11, "not found") :
1967 CGETS(30, 12, "unreadable"))));
1969 cleanup_until(tdir);
1972 cleanup_until(tdir);
1978 * Copy and append a / if there was one
1980 slash = edir->len != 0 && edir->s[edir->len - 1] == '/';
1982 Strbuf_append(edir, nd);
1983 if (slash != 0 && edir->s[edir->len - 1] != '/')
1984 Strbuf_append1(edir, '/');
1985 Strbuf_terminate(edir);
1990 } /* end expand_dir */
1994 * Returns true if the directory should not be stat'd,
1996 * This way, things won't grind to a halt when you complete in /afs
1997 * or very large directories.
2005 if ((vp = adrof(STRnostat)) == NULL || (cp = vp->vec) == NULL)
2007 for (; *cp != NULL; cp++) {
2008 if (Strcmp(*cp, STRstar) == 0)
2010 if (Gmatch(dir, *cp))
2018 * Return a character that signifies a filetype
2019 * symbology from 4.3 ls command.
2022 filetype(Char *dir, Char *file)
2029 if (nostat(dir)) return(' ');
2031 path = Strspl(dir, file);
2032 ptr = short2str(path);
2035 if (lstat(ptr, &statb) != -1) {
2037 if (S_ISLNK(statb.st_mode)) { /* Symbolic link */
2038 if (adrof(STRlistlinks)) {
2039 if (stat(ptr, &statb) == -1)
2041 else if (S_ISDIR(statb.st_mode))
2051 if (S_ISSOCK(statb.st_mode)) /* Socket */
2055 if (S_ISFIFO(statb.st_mode)) /* Named Pipe */
2059 if (S_ISHIDDEN(statb.st_mode)) /* Hidden Directory [aix] */
2064 struct stat hpstatb;
2067 p2 = strspl(ptr, "+"); /* Must append a '+' and re-stat(). */
2068 if ((stat(p2, &hpstatb) != -1) && S_ISCDF(hpstatb.st_mode)) {
2070 return ('+'); /* Context Dependent Files [hpux] */
2076 if (S_ISNWK(statb.st_mode)) /* Network Special [hpux] */
2080 if (S_ISCHR(statb.st_mode)) /* char device */
2084 if (S_ISBLK(statb.st_mode)) /* block device */
2088 if (S_ISDIR(statb.st_mode)) /* normal Directory */
2091 if (statb.st_mode & (S_IXUSR|S_IXGRP|S_IXOTH))
2096 } /* end filetype */
2100 * Return trus if the file is a directory
2103 isadirectory(const Char *dir, const Char *file)
2104 /* return 1 if dir/file is a directory */
2105 /* uses stat rather than lstat to get dest. */
2112 path = Strspl(dir, file);
2113 cpath = short2str(path);
2115 if (stat(cpath, &statb) >= 0) { /* resolve through symlink */
2117 if (S_ISSOCK(statb.st_mode)) /* Socket */
2121 if (S_ISFIFO(statb.st_mode)) /* Named Pipe */
2124 if (S_ISDIR(statb.st_mode)) /* normal Directory */
2129 } /* end isadirectory */
2134 * Return how many rows needed to print sorted down columns
2137 find_rows(Char *items[], int count, int no_file_suffix)
2139 int i, columns, rows;
2140 unsigned int maxwidth = 0;
2142 for (i = 0; i < count; i++) /* find widest string */
2143 maxwidth = max(maxwidth, (unsigned int) Strlen(items[i]));
2145 maxwidth += no_file_suffix ? 1 : 2; /* for the file tag and space */
2146 columns = (TermH + 1) / maxwidth; /* PWP: terminal size change */
2149 rows = (count + (columns - 1)) / columns;
2152 } /* end rows_needed_by_print_by_column */
2155 /* print_by_column():
2156 * Print sorted down columns or across columns when the first
2157 * word of $listflags shell variable contains 'x'.
2161 print_by_column(Char *dir, Char *items[], int count, int no_file_suffix)
2163 int i, r, c, columns, rows;
2165 unsigned int wx, maxwidth = 0;
2169 lbuffed = 0; /* turn off line buffering */
2172 across = ((val = varval(STRlistflags)) != STRNULL) &&
2173 (Strchr(val, 'x') != NULL);
2175 for (i = 0; i < count; i++) { /* find widest string */
2176 maxwidth = max(maxwidth, (unsigned int) NLSStringWidth(items[i]));
2179 maxwidth += no_file_suffix ? 1 : 2; /* for the file tag and space */
2180 columns = TermH / maxwidth; /* PWP: terminal size change */
2181 if (!columns || !isatty(didfds ? 1 : SHOUT))
2183 rows = (count + (columns - 1)) / columns;
2186 for (r = 0; r < rows; r++) {
2187 for (c = 0; c < columns; c++) {
2188 i = across ? (i + 1) : (c * rows + r);
2192 w = Strlen(items[i]);
2195 if (no_file_suffix) {
2196 /* Print the command name */
2197 Char f = items[i][w - 1];
2198 items[i][w - 1] = 0;
2199 print_with_color(items[i], w - 1, f);
2200 items[i][w - 1] = f;
2203 /* Print filename followed by '/' or '*' or ' ' */
2204 print_with_color(items[i], w, filetype(dir, items[i]));
2207 #else /* ifndef COLOR_LS_F */
2208 if (no_file_suffix) {
2209 /* Print the command name */
2210 xprintf("%S", items[i]);
2213 /* Print filename followed by '/' or '*' or ' ' */
2214 xprintf("%-S%c", items[i], filetype(dir, items[i]));
2217 #endif /* COLOR_LS_F */
2219 if (c < (columns - 1)) { /* Not last column? */
2220 w = NLSStringWidth(items[i]) + wx;
2221 for (; w < maxwidth; w++)
2233 lbuffed = 1; /* turn back on line buffering */
2235 } /* end print_by_column */
2239 * Compare strings ignoring the quoting chars
2242 StrQcmp(const Char *str1, const Char *str2)
2244 for (; *str1 && samecase(*str1 & TRIM) == samecase(*str2 & TRIM);
2248 * The following case analysis is necessary so that characters which look
2249 * negative collate low against normal characters but high against the
2250 * end-of-string NUL.
2252 if (*str1 == '\0' && *str2 == '\0')
2254 else if (*str1 == '\0')
2256 else if (*str2 == '\0')
2259 return ((*str1 & TRIM) - (*str2 & TRIM));
2264 * Comparison routine for qsort, (Char **, Char **)
2267 fcompare(const void *xfile1, const void *xfile2)
2269 const Char *const *file1 = xfile1, *const *file2 = xfile2;
2271 return collate(*file1, *file2);
2272 } /* end fcompare */
2276 * Concatenate src onto tail of des.
2277 * Des is a string whose maximum length is count.
2278 * Always null terminate.
2281 catn(Char *des, const Char *src, int count)
2283 while (*des && --count > 0)
2286 if ((*des++ = *src++) == 0)
2293 * like strncpy but always leave room for trailing \0
2294 * and always null terminate.
2297 copyn(Char *des, const Char *src, size_t count)
2299 while (--count != 0)
2300 if ((*des++ = *src++) == 0)
2307 * like it's normal string counter-part
2317 /* Search the STR_environ for the entry matching str. */
2318 for (var = STR_environ; var != NULL && *var != NULL; var++)
2319 if (Strlen(*var) >= len && (*var)[len] == '=') {
2320 /* Temporarily terminate the string so we can copy the variable
2323 res = StrQcmp(*var, str);
2324 /* Restore the '=' and return a pointer to the value of the
2325 environment variable. */
2328 return (&((*var)[len + 1]));
2334 struct scroll_tab_list *scroll_tab = 0;
2337 add_scroll_tab(Char *item)
2339 struct scroll_tab_list *new_scroll;
2341 new_scroll = xmalloc(sizeof(struct scroll_tab_list));
2342 new_scroll->element = Strsave(item);
2343 new_scroll->next = scroll_tab;
2344 scroll_tab = new_scroll;
2348 choose_scroll_tab(struct Strbuf *exp_name, int cnt)
2350 struct scroll_tab_list *loop;
2354 ptr = xmalloc(sizeof(Char *) * cnt);
2355 cleanup_push(ptr, xfree);
2357 for(loop = scroll_tab; loop && (tmp >= 0); loop = loop->next)
2358 ptr[--tmp] = loop->element;
2360 qsort(ptr, cnt, sizeof(Char *), fcompare);
2363 Strbuf_append(exp_name, ptr[curchoice]);
2364 Strbuf_terminate(exp_name);
2369 free_scroll_tab(void)
2371 struct scroll_tab_list *loop;
2375 scroll_tab = scroll_tab->next;
2376 xfree(loop->element);