2 * tw.parse.c: Everyone has taken a shot in this futile effort to
3 * lexically analyze a csh line... Well we cannot good
4 * a job as good as sh.lex.c; but we try. Amazing that
5 * it works considering how many hands have touched this code
8 * Copyright (c) 1980, 1991 The Regents of the University of California.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44 #endif /* WINNT_NATIVE */
45 #define EVEN(x) (((x) & 1) != 1)
47 #define DOT_NONE 0 /* Don't display dot files */
48 #define DOT_NOT 1 /* Don't display dot or dot-dot */
49 #define DOT_ALL 2 /* Display all dot files */
51 /* TW_NONE, TW_COMMAND, TW_VARIABLE, TW_LOGNAME, */
52 /* TW_FILE, TW_DIRECTORY, TW_VARLIST, TW_USER, */
53 /* TW_COMPLETION, TW_ALIAS, TW_SHELLVAR, TW_ENVVAR, */
54 /* TW_BINDING, TW_WORDLIST, TW_LIMIT, TW_SIGNAL */
55 /* TW_JOB, TW_EXPLAIN, TW_TEXT, TW_GRPNAME */
56 static void (*const tw_start_entry[]) (DIR *, const Char *) = {
57 tw_file_start, tw_cmd_start, tw_var_start, tw_logname_start,
58 tw_file_start, tw_file_start, tw_vl_start, tw_logname_start,
59 tw_complete_start, tw_alias_start, tw_var_start, tw_var_start,
60 tw_bind_start, tw_wl_start, tw_limit_start, tw_sig_start,
61 tw_job_start, tw_file_start, tw_file_start, tw_grpname_start
64 static int (*const tw_next_entry[]) (struct Strbuf *, struct Strbuf *,
66 tw_file_next, tw_cmd_next, tw_var_next, tw_logname_next,
67 tw_file_next, tw_file_next, tw_var_next, tw_logname_next,
68 tw_var_next, tw_var_next, tw_shvar_next, tw_envvar_next,
69 tw_bind_next, tw_wl_next, tw_limit_next, tw_sig_next,
70 tw_job_next, tw_file_next, tw_file_next, tw_grpname_next
73 static void (*const tw_end_entry[]) (void) = {
74 tw_dir_end, tw_dir_end, tw_dir_end, tw_logname_end,
75 tw_dir_end, tw_dir_end, tw_dir_end, tw_logname_end,
76 tw_dir_end, tw_dir_end, tw_dir_end, tw_dir_end,
77 tw_dir_end, tw_dir_end, tw_dir_end, tw_dir_end,
78 tw_dir_end, tw_dir_end, tw_dir_end, tw_grpname_end
83 /* Set to TRUE if recexact is set and an exact match is found
84 * along with other, longer, matches.
89 int match_unique_match = FALSE;
90 int non_unique_match = FALSE;
91 static int SearchNoDirErr = 0; /* t_search returns -2 if dir is unreadable */
93 /* state so if a completion is interrupted, the input line doesn't get
95 int InsideCompletion = 0;
97 /* do the expand or list on the command line -- SHOULD BE REPLACED */
99 static void extract_dir_and_name (const Char *, struct Strbuf *,
101 static int insert_meta (const Char *, const Char *,
103 static int tilde (struct Strbuf *, Char *);
104 static int expand_dir (const Char *, struct Strbuf *, DIR **,
106 static int nostat (Char *);
107 static Char filetype (Char *, Char *);
108 static int t_glob (Char ***, int);
109 static int c_glob (Char ***);
110 static int is_prefix (Char *, Char *);
111 static int is_prefixmatch (Char *, Char *, int);
112 static int is_suffix (Char *, Char *);
113 static int recognize (struct Strbuf *, const Char *, size_t,
115 static int ignored (Char *);
116 static int isadirectory (const Char *, const Char *);
117 static int tw_collect_items (COMMAND, int, struct Strbuf *,
118 struct Strbuf *, Char *, const Char *,
120 static int tw_collect (COMMAND, int, struct Strbuf *,
121 struct Strbuf *, Char *, Char *, int,
123 static Char tw_suffix (int, struct Strbuf *,const Char *,
125 static void tw_fixword (int, struct Strbuf *, Char *, Char *);
126 static void tw_list_items (int, int, int);
127 static void add_scroll_tab (Char *);
128 static void choose_scroll_tab (struct Strbuf *, int);
129 static void free_scroll_tab (void);
130 static int find_rows (Char *[], int, int);
134 * If we find a set command, then we break a=b to a= and word becomes
135 * b else, we don't break a=b. [don't use that; splits words badly and
136 * messes up tw_complete()]
138 #define isaset(c, w) ((w)[-1] == '=' && \
139 ((c)[0] == 's' && (c)[1] == 'e' && (c)[2] == 't' && \
140 ((c[3] == ' ' || (c)[3] == '\t'))))
143 /* TRUE if character must be quoted */
144 #define tricky(w) (cmap(w, _META | _DOL | _QF | _QB | _ESC | _GLOB) && w != '#')
145 /* TRUE if double quotes don't protect character */
146 #define tricky_dq(w) (cmap(w, _DOL | _QB))
150 * > 1: No. of items found
151 * = 1: Exactly one match / spelling corrected
152 * = 0: No match / spelling was correct
153 * < 0: Error (incl spelling correction impossible)
156 tenematch(Char *inputline, int num_read, COMMAND command)
158 struct Strbuf qline = Strbuf_INIT;
159 Char qu = 0, *pat = STRNULL;
160 size_t wp, word, wordp, cmd_start, oword = 0, ocmd_start = 0;
163 Char *oword_start = NULL;
165 int looking; /* what we are looking for */
166 int search_ret; /* what search returned for debugging */
169 str_end = &inputline[num_read];
170 cleanup_push(&qline, Strbuf_cleanup);
172 word_start = inputline;
173 word = cmd_start = 0;
174 for (cp = inputline; cp < str_end; cp++) {
175 if (!cmap(qu, _ESC)) {
176 if (cmap(*cp, _QF|_ESC)) {
177 if (qu == 0 || qu == *cp) {
182 if (qu != '\'' && cmap(*cp, _QB)) {
183 if ((backq ^= 1) != 0) {
184 ocmd_start = cmd_start;
185 oword_start = word_start;
188 word = cmd_start = qline.len + 1;
191 cmd_start = ocmd_start;
192 word_start = oword_start;
195 Strbuf_append1(&qline, *cp);
200 cmd_start = qline.len + 1;
202 /* Don't quote '/' to make the recognize stuff work easily */
203 /* Don't quote '$' in double quotes */
205 if (cmap(*cp, _ESC) && cp < str_end - 1 && cp[1] == HIST &&
207 Strbuf_append1(&qline, *++cp | QUOTE);
208 else if (qu && (tricky(*cp) || *cp == '~') &&
209 !(qu == '\"' && tricky_dq(*cp)))
210 Strbuf_append1(&qline, *cp | QUOTE);
212 Strbuf_append1(&qline, *cp);
213 if (ismetahash(qline.s[qline.len - 1])
214 /* || isaset(qline.s + cmd_start, qline.s + qline.len) */)
215 word = qline.len, word_start = cp + 1;
219 Strbuf_terminate(&qline);
223 * SPECIAL HARDCODED COMPLETIONS:
224 * first word of command -> TW_COMMAND
225 * everything else -> TW_ZERO
228 looking = starting_a_command(qline.s + word - 1, qline.s) ?
229 TW_COMMAND : TW_ZERO;
237 xprintf(CGETS(30, 1, "starting_a_command %d\n"), looking);
238 xprintf("\ncmd_start:%S:\n", qline.s + cmd_start);
239 xprintf("qline:%S:\n", qline.s);
241 for (p = qline.s; *p; p++)
242 xprintf("%c", *p & QUOTE ? '-' : ' ');
244 xprintf("word:%S:\n", qline.s + word);
246 for (p = qline.s + word; *p; p++)
247 xprintf("%c", *p & QUOTE ? '-' : ' ');
252 if ((looking == TW_COMMAND || looking == TW_ZERO) &&
253 (command == RECOGNIZE || command == LIST || command == SPELL ||
254 command == RECOGNIZE_SCROLL)) {
258 xprintf(CGETS(30, 2, "complete %d "), looking);
261 looking = tw_complete(qline.s + cmd_start, &p, &pat, looking, &suf);
264 xprintf(CGETS(30, 3, "complete %d %S\n"), looking, pat);
270 Char *items[2], **ptr;
274 case RECOGNIZE_SCROLL:
275 case RECOGNIZE_ALL: {
276 struct Strbuf wordbuf = Strbuf_INIT;
279 if (adrof(STRautocorrect)) {
280 if ((slshp = Strrchr(qline.s + wordp, '/')) != NULL &&
283 for (bptr = qline.s + wordp; bptr < slshp; bptr++) {
285 * do not try to correct spelling of words containing
286 * globbing characters
297 Strbuf_append(&wordbuf, qline.s + wordp);
298 Strbuf_terminate(&wordbuf);
299 cleanup_push(&wordbuf, Strbuf_cleanup);
300 search_ret = t_search(&wordbuf, command, looking, 1, pat, suf);
302 Strbuf_append(&qline, wordbuf.s);
303 Strbuf_terminate(&qline);
304 cleanup_until(&wordbuf);
307 if (search_ret == -2) {
310 rword = Strsave(slshp);
311 cleanup_push(rword, xfree);
312 if (slshp != STRNULL)
314 wordbuf = Strbuf_init;
315 Strbuf_append(&wordbuf, qline.s + wordp);
316 Strbuf_terminate(&wordbuf);
317 cleanup_push(&wordbuf, Strbuf_cleanup);
318 search_ret = spell_me(&wordbuf, looking, pat, suf);
319 if (search_ret == 1) {
320 Strbuf_append(&wordbuf, rword);
321 Strbuf_terminate(&wordbuf);
322 wp = wordp + wordbuf.len;
323 search_ret = t_search(&wordbuf, command, looking, 1, pat, suf);
326 Strbuf_append(&qline, wordbuf.s);
327 Strbuf_terminate(&qline);
328 cleanup_until(rword);
330 if (qline.s[wp] != '\0' &&
331 insert_meta(word_start, str_end, qline.s + word, !qu) < 0)
332 goto err; /* error inserting */
337 struct Strbuf wordbuf = Strbuf_INIT;
339 for (bptr = word_start; bptr < str_end; bptr++) {
341 * do not try to correct spelling of words containing globbing
349 Strbuf_append(&wordbuf, qline.s + wordp);
350 Strbuf_terminate(&wordbuf);
351 cleanup_push(&wordbuf, Strbuf_cleanup);
354 * Don't try to spell things that we know they are correct.
355 * Trying to spell can hang when we have NFS mounted hung
358 if ((looking == TW_COMMAND) && Strchr(wordbuf.s, '/') != NULL) {
359 if (executable(NULL, wordbuf.s, 0)) {
360 cleanup_until(&wordbuf);
366 search_ret = spell_me(&wordbuf, looking, pat, suf);
368 Strbuf_append(&qline, wordbuf.s);
369 Strbuf_terminate(&qline);
370 cleanup_until(&wordbuf);
371 if (search_ret == 1) {
372 if (insert_meta(word_start, str_end, qline.s + word, !qu) < 0)
373 goto err; /* error inserting */
379 do_help(qline.s + cmd_start);
385 items[0] = Strsave(qline.s + wordp);
387 cleanup_push(items[0], xfree);
389 count = (looking == TW_COMMAND && Strchr(qline.s + wordp, '/') == 0) ?
391 t_glob(&ptr, looking == TW_COMMAND);
392 cleanup_until(items[0]);
394 cleanup_push(ptr, blk_cleanup);
397 print_by_column(STRNULL, ptr, count, 0);
399 DeleteBack(str_end - word_start);/* get rid of old word */
400 for (i = 0; i < count; i++)
401 if (ptr[i] && *ptr[i]) {
402 (void) quote(ptr[i]);
403 if (insert_meta(0, 0, ptr[i], 0) < 0 ||
404 InsertStr(STRspace) < 0) {
407 goto err; /* error inserting */
418 bptr = dollar(qline.s + word);
420 if (insert_meta(word_start, str_end, bptr, !qu) < 0) {
422 goto err; /* error inserting */
432 if ((bptr = dnormalize(qline.s + wordp, symlinks == SYM_IGNORE ||
433 symlinks == SYM_EXPAND)) != NULL) {
434 if (insert_meta(word_start, str_end, bptr, !qu) < 0) {
436 goto err; /* error inserting */
445 case COMMAND_NORMALIZE: {
449 found = cmd_expand(qline.s + wordp, &p);
456 if (insert_meta(word_start, str_end, p, !qu) < 0) {
458 goto err; /* error inserting */
467 struct Strbuf wordbuf = Strbuf_INIT;
469 Strbuf_append(&wordbuf, qline.s + wordp);
470 Strbuf_terminate(&wordbuf);
471 cleanup_push(&wordbuf, Strbuf_cleanup);
472 search_ret = t_search(&wordbuf, LIST, looking, 1, pat, suf);
474 Strbuf_append(&qline, wordbuf.s);
475 Strbuf_terminate(&qline);
476 cleanup_until(&wordbuf);
481 xprintf(CGETS(30, 4, "%s: Internal match error.\n"), progname);
485 cleanup_until(&qline);
489 cleanup_until(&qline);
491 } /* end tenematch */
495 * Return a list of files that match the pattern
498 t_glob(Char ***v, int cmd)
509 getexit(osetexit); /* make sure to come back here */
510 omark = cleanup_push_mark();
512 *v = globall(*v, gflag);
513 cleanup_pop_mark(omark);
530 for (i = 0, fwd = 0; av[i] != NULL; i++)
531 if (!executable(NULL, av[i], 0)) {
549 * Return a list of commands that match the pattern
554 struct blk_buf av = BLK_BUF_INIT;
555 struct Strbuf cmd = Strbuf_INIT, dir = Strbuf_INIT;
562 cleanup_push(&av, bb_cleanup);
563 cleanup_push(&cmd, Strbuf_cleanup);
564 cleanup_push(&dir, Strbuf_cleanup);
566 tw_cmd_start(NULL, NULL);
567 while (cmd.len = 0, tw_cmd_next(&cmd, &dir, &flag) != 0) {
568 Strbuf_terminate(&cmd);
569 if (Gmatch(cmd.s, pat))
570 bb_append(&av, Strsave(cmd.s));
582 * change the word before the cursor.
583 * cp must point to the start of the unquoted word.
584 * cpend to the end of it.
585 * word is the text that has to be substituted.
587 * try to keep all the quote characters of the user's input.
588 * change quote type only if necessary.
591 insert_meta(const Char *cp, const Char *cpend, const Char *word,
594 struct Strbuf buffer = Strbuf_INIT;
597 int in_sync = (cp != NULL);
599 int ndel = (int) (cp ? cpend - cp : 0);
603 for (wptr = word;;) {
606 if (in_sync && !cmap(qu, _ESC) && cmap(*cp, _QF|_ESC))
607 if (qu == 0 || qu == *cp) {
609 Strbuf_append1(&buffer, *cp++);
617 #if INVALID_BYTE != 0
618 /* add checking INVALID_BYTE for FIX UTF32 */
619 if ((w & INVALID_BYTE) != INVALID_BYTE) /* w < INVALID_BYTE */
623 if (cmap(w, _ESC | _QF))
624 wq = QUOTE; /* quotes are always quoted */
626 if (!wq && qu && tricky(w) && !(qu == '\"' && tricky_dq(w))) {
627 /* We have to unquote the character */
630 buffer.s[buffer.len - 1] = w;
632 Strbuf_append1(&buffer, qu);
633 Strbuf_append1(&buffer, w);
637 Strbuf_append1(&buffer, qu);
639 } else if (qu && w == qu) {
641 if (buffer.len != 0 && buffer.s[buffer.len - 1] == qu) {
642 /* User misunderstanding :) */
643 buffer.s[buffer.len - 1] = '\\';
644 Strbuf_append1(&buffer, w);
647 Strbuf_append1(&buffer, qu);
648 Strbuf_append1(&buffer, '\\');
649 Strbuf_append1(&buffer, w);
650 Strbuf_append1(&buffer, qu);
653 else if (wq && qu == '\"' && tricky_dq(w)) {
655 Strbuf_append1(&buffer, qu);
656 Strbuf_append1(&buffer, '\\');
657 Strbuf_append1(&buffer, w);
658 Strbuf_append1(&buffer, qu);
660 ((!qu && (tricky(w) || (w == HISTSUB && HISTSUB != '\0'
661 && buffer.len == 0))) ||
662 (!cmap(qu, _ESC) && w == HIST && HIST != '\0'))) {
664 Strbuf_append1(&buffer, '\\');
665 Strbuf_append1(&buffer, w);
667 if (in_sync && *cp++ != w)
669 Strbuf_append1(&buffer, w);
675 if (closequotes && qu && !cmap(qu, _ESC))
676 Strbuf_append1(&buffer, w);
677 bptr = Strbuf_finish(&buffer);
680 res = InsertStr(bptr);
683 } /* end insert_meta */
688 * return true if check matches initial chars in template
689 * This differs from PWB imatch in that if check is null
690 * it matches anything
693 is_prefix(Char *check, Char *template)
695 for (; *check; check++, template++)
696 if ((*check & TRIM) != (*template & TRIM))
699 } /* end is_prefix */
703 * return true if check matches initial chars in template
704 * This differs from PWB imatch in that if check is null
705 * it matches anything
706 * and matches on shortening of commands
709 is_prefixmatch(Char *check, Char *template, int enhanced)
711 Char MCH1, MCH2, LCH1, LCH2;
713 for (; *check; check++, template++) {
714 if ((*check & TRIM) != (*template & TRIM)) {
715 MCH1 = (*check & TRIM);
716 MCH2 = (*template & TRIM);
717 LCH1 = Isupper(MCH1) ? Tolower(MCH1) :
718 enhanced == 2 && MCH1 == '_' ? '-' : MCH1;
719 LCH2 = Isupper(MCH2) ? Tolower(MCH2) :
720 enhanced == 2 && MCH2 == '_' ? '-' : MCH2;
721 if (MCH1 != MCH2 && MCH1 != LCH2 &&
722 (LCH1 != MCH2 || enhanced == 2)) {
723 if (enhanced && ((*check & TRIM) == '-' ||
724 (*check & TRIM) == '.' ||
725 (*check & TRIM) == '_')) {
726 MCH1 = MCH2 = (*check & TRIM);
727 if (MCH1 == '_' && enhanced != 2) {
729 } else if (MCH1 == '-') {
732 for (; *template && (*template & TRIM) != MCH1 &&
733 (*template & TRIM) != MCH2; template++)
745 } /* end is_prefixmatch */
749 * Return true if the chars in template appear at the
750 * end of check, I.e., are it's suffix.
753 is_suffix(Char *check, Char *template)
757 t = Strend(template);
762 if (c == check || (*--t & TRIM) != (*--c & TRIM))
765 } /* end is_suffix */
769 * Return true if this is an ignored item
777 if ((vp = adrof(STRfignore)) == NULL || (cp = vp->vec) == NULL)
779 for (; *cp != NULL; cp++)
780 if (is_suffix(item, *cp))
787 /* starting_a_command():
788 * return true if the command starting at wordstart is a command
791 starting_a_command(Char *wordstart, Char *inputline)
793 Char *ptr, *ncmdstart;
796 cmdstart[] = {'`', ';', '&', '(', '|', '\0'},
797 cmdalive[] = {' ', '\t', '\'', '"', '<', '>', '\0'};
800 * Find if the number of backquotes is odd or even.
802 for (ptr = wordstart, count = 0;
804 count += (*ptr-- == '`'))
807 * if the number of backquotes is even don't include the backquote char in
808 * the list of command starting delimiters [if it is zero, then it does not
811 ncmdstart = cmdstart + EVEN(count);
814 * look for the characters previous to this word if we find a command
815 * starting delimiter we break. if we find whitespace and another previous
816 * word then we are not a command
818 * count is our state machine: 0 looking for anything 1 found white-space
821 for (count = 0; wordstart >= inputline; wordstart--) {
822 if (*wordstart == '\0')
824 if (Strchr(ncmdstart, *wordstart)) {
825 for (ptr = wordstart, bsl = 0; *(--ptr) == '\\'; bsl++);
835 if ((ptr = Strchr(cmdalive, *wordstart)) != NULL)
837 if (count == 1 && !ptr)
841 if (wordstart > inputline)
842 switch (*wordstart) {
843 case '&': /* Look for >& */
844 while (wordstart > inputline &&
845 (*--wordstart == ' ' || *wordstart == '\t'))
847 if (*wordstart == '>')
850 case '(': /* check for foreach, if etc. */
851 while (wordstart > inputline &&
852 (*--wordstart == ' ' || *wordstart == '\t'))
854 if (!iscmdmeta(*wordstart) &&
855 (*wordstart != ' ' && *wordstart != '\t'))
862 } /* end starting_a_command */
866 * Object: extend what user typed up to an ambiguity.
868 * On first match, copy full item (assume it'll be the only match)
869 * On subsequent matches, shorten exp_name to the first
870 * character mismatch between exp_name and item.
871 * If we shorten it back to the prefix length, stop searching.
874 recognize(struct Strbuf *exp_name, const Char *item, size_t name_length,
875 int numitems, int enhanced, int igncase)
877 Char MCH1, MCH2, LCH1, LCH2;
882 if (numitems == 1) { /* 1st match */
884 Strbuf_append(exp_name, item);
885 Strbuf_terminate(exp_name);
888 if (!enhanced && !igncase) {
889 for (x = exp_name->s, ent = item; *x && (*x & TRIM) == (*ent & TRIM);
893 for (x = exp_name->s, ent = item; *x; x++, ent++) {
896 LCH1 = Isupper(MCH1) ? Tolower(MCH1) : MCH1;
897 LCH2 = Isupper(MCH2) ? Tolower(MCH2) : MCH2;
899 if (LCH1 == MCH2 || (MCH1 == '_' && MCH2 == '-'))
901 else if (LCH1 != LCH2)
907 *x = '\0'; /* Shorten at 1st char diff */
908 exp_name->len = x - exp_name->s;
909 if (!(match_unique_match || is_set(STRrecexact) || (enhanced && *ent)) &&
910 len == name_length) /* Ambiguous to prefix? */
911 return (-1); /* So stop now and save time */
913 } /* end recognize */
916 /* tw_collect_items():
917 * Collect items that match target.
919 * Returns the spelling distance of the closest match.
921 * Returns the number of items found.
922 * If none found, but some ignored items were found,
923 * It returns the -number of ignored items.
926 tw_collect_items(COMMAND command, int looking, struct Strbuf *exp_dir,
927 struct Strbuf *exp_name, Char *target, const Char *pat,
930 int done = FALSE; /* Search is done */
931 int showdots; /* Style to show dot files */
932 int nignored = 0; /* Number of fignored items */
933 int numitems = 0; /* Number of matched items */
934 size_t name_length = Strlen(target); /* Length of prefix (file name) */
935 int exec_check = flags & TW_EXEC_CHK;/* need to check executability */
936 int dir_check = flags & TW_DIR_CHK; /* Need to check for directories */
937 int text_check = flags & TW_TEXT_CHK;/* Need to check for non-directories */
938 int dir_ok = flags & TW_DIR_OK; /* Ignore directories? */
939 int gpat = flags & TW_PAT_OK; /* Match against a pattern */
940 int ignoring = flags & TW_IGN_OK; /* Use fignore? */
941 int d = 4, nd; /* Spelling distance */
945 struct Strbuf buf = Strbuf_INIT, item = Strbuf_INIT;
954 if ((ptr = varval(STRlistflags)) != STRNULL)
967 if (looking == TW_COMMAND
968 && (vp = adrof(STRautorehash)) != NULL && vp->vec != NULL)
969 for (cp = vp->vec; *cp; cp++)
970 if (Strcmp(*cp, STRalways) == 0
971 || (Strcmp(*cp, STRcorrect) == 0 && command == SPELL)
972 || (Strcmp(*cp, STRcomplete) == 0 && command != SPELL)) {
974 tw_cmd_start(NULL, NULL);
978 cleanup_push(&item, Strbuf_cleanup);
979 cleanup_push(&buf, Strbuf_cleanup);
982 tw_next_entry[looking](&item, exp_dir, &flags) != 0)) {
983 Strbuf_terminate(&item);
985 xprintf("item = %S\n", item.s);
992 * Don't match . files on null prefix match
994 if (showdots == DOT_NOT && (ISDOT(item.s) || ISDOTDOT(item.s)))
996 if (name_length == 0 && item.s[0] == '.' && showdots == DOT_NONE)
1001 #if defined(_UWIN) || defined(__CYGWIN__)
1003 * Turn foo.{exe,com,bat,cmd} into foo since UWIN's readdir returns
1004 * the file with the .exe, .com, .bat, .cmd extension
1006 * Same for Cygwin, but only for .exe and .com extension.
1010 static const char *rext[] = { ".exe", ".com" };
1012 static const char *rext[] = { ".exe", ".bat", ".com", ".cmd" };
1014 size_t exti = Strlen(item.s);
1017 char *ext = short2str(&item.s[exti -= 4]);
1020 for (i = 0; i < sizeof(rext) / sizeof(rext[0]); i++)
1021 if (strcasecmp(ext, rext[i]) == 0) {
1023 Strbuf_terminate(&item);
1028 #endif /* _UWIN || __CYGWIN__ */
1029 exec_check = flags & TW_EXEC_CHK;
1030 dir_ok = flags & TW_DIR_OK;
1044 case SPELL: /* correct the spelling of the last bit */
1045 if (name_length == 0) {/* zero-length word can't be misspelled */
1046 exp_name->len = 0; /* (not trying is important for ~) */
1047 Strbuf_terminate(exp_name);
1052 if (gpat && !Gmatch(item.s, pat))
1055 * Swapped the order of the spdist() arguments as suggested
1056 * by eeide@asylum.cs.utah.edu (Eric Eide)
1058 nd = spdist(target, item.s); /* test the item against original */
1059 if (nd <= d && nd != 4) {
1060 if (!(exec_check && !executable(exp_dir->s, item.s, dir_ok))) {
1062 Strbuf_append(exp_name, item.s);
1063 Strbuf_terminate(exp_name);
1065 if (d == 0) /* if found it exactly */
1070 if (spdir(exp_name, exp_dir->s, item.s, target)) {
1072 !executable(exp_dir->s, exp_name->s, dir_ok))
1076 * We don't want to stop immediately, because
1077 * we might find an exact/better match later.
1090 case RECOGNIZE_SCROLL:
1092 if ((vp = adrof(STRcomplete)) != NULL && vp->vec != NULL)
1093 for (cp = vp->vec; *cp; cp++) {
1094 if (Strcmp(*cp, STREnhance) == 0)
1096 else if (Strcmp(*cp, STRigncase) == 0)
1098 else if (Strcmp(*cp, STRenhance) == 0)
1102 if (enhanced || igncase) {
1103 if (!is_prefixmatch(target, item.s, enhanced))
1106 if (!is_prefix(target, item.s))
1110 if (exec_check && !executable(exp_dir->s, item.s, dir_ok))
1113 if (dir_check && !isadirectory(exp_dir->s, item.s))
1116 if (text_check && isadirectory(exp_dir->s, item.s))
1120 * Only pattern match directories if we're checking
1123 if (gpat && !Gmatch(item.s, pat) &&
1124 (dir_check || !isadirectory(exp_dir->s, item.s)))
1128 * Remove duplicates in command listing and completion
1129 * AFEB added code for TW_LOGNAME and TW_USER cases
1131 if (looking == TW_COMMAND || looking == TW_LOGNAME
1132 || looking == TW_USER || command == LIST) {
1134 Strbuf_append(&buf, item.s);
1137 if (!(dir_ok && exec_check))
1139 if (filetype(exp_dir->s, item.s) == '/')
1140 Strbuf_append1(&buf, '/');
1145 Strbuf_append1(&buf, filetype(exp_dir->s, item.s));
1151 Strbuf_terminate(&buf);
1152 if ((looking == TW_COMMAND || looking == TW_USER
1153 || looking == TW_LOGNAME) && tw_item_find(buf.s))
1156 /* maximum length 1 (NULL) + 1 (~ or $) + 1 (filetype) */
1158 if (command == LIST)
1163 if (command == RECOGNIZE || command == RECOGNIZE_ALL ||
1164 command == RECOGNIZE_SCROLL) {
1165 if (ignoring && ignored(item.s)) {
1169 else if (command == RECOGNIZE_SCROLL) {
1170 add_scroll_tab(item.s);
1174 if (match_unique_match || is_set(STRrecexact)) {
1175 if (StrQcmp(target, item.s) == 0) { /* EXACT match */
1177 Strbuf_append(exp_name, item.s);
1178 Strbuf_terminate(exp_name);
1179 numitems = 1; /* fake into expanding */
1180 non_unique_match = TRUE;
1185 if (recognize(exp_name, item.s, name_length, ++numitems,
1187 if (command != RECOGNIZE_SCROLL)
1189 if (enhanced && exp_name->len < name_length) {
1191 Strbuf_append(exp_name, target);
1192 Strbuf_terminate(exp_name);
1201 xprintf("done item = %S\n", item.s);
1204 cleanup_until(&item);
1206 if (command == RECOGNIZE_SCROLL) {
1207 if ((cnt <= curchoice) || (curchoice == -1)) {
1211 } else if (numitems > 1) {
1213 curchoice = cnt - 1;
1214 choose_scroll_tab(exp_name, cnt);
1220 if (command == SPELL)
1223 if (ignoring && numitems == 0 && nignored > 0)
1232 * Find and return the appropriate suffix character
1236 tw_suffix(int looking, struct Strbuf *word, const Char *exp_dir, Char *exp_name)
1242 (void) strip(exp_name);
1251 * Don't consider array variables or empty variables
1253 if ((vp = adrof(exp_name)) != NULL && vp->vec != NULL) {
1254 if ((ptr = vp->vec[0]) == NULL || *ptr == '\0' ||
1258 else if ((ptr = tgetenv(exp_name)) == NULL || *ptr == '\0')
1261 if ((dol = Strrchr(word->s, '$')) != 0 &&
1262 dol[1] == '{' && Strchr(dol, '}') == NULL)
1265 return isadirectory(exp_dir, ptr) ? '/' : ' ';
1273 return isadirectory(exp_dir, exp_name) ? '/' : ' ';
1293 } /* end tw_suffix */
1297 * Repair a word after a spalling or a recognizwe
1300 tw_fixword(int looking, struct Strbuf *word, Char *dir, Char *exp_name)
1307 Strbuf_append1(word, '~');
1311 if ((ptr = Strrchr(word->s, '$')) != NULL) {
1312 if (ptr[1] == '{') ptr++;
1313 word->len = ptr + 1 - word->s; /* Delete after the dollar */
1322 Strbuf_append(word, dir); /* put back dir part */
1330 (void) quote(exp_name);
1331 Strbuf_append(word, exp_name); /* add extended name */
1332 Strbuf_terminate(word);
1333 } /* end tw_fixword */
1337 * Collect items. Return -1 in case we were interrupted or
1338 * the return value of tw_collect
1339 * This is really a wrapper for tw_collect_items, serving two
1341 * 1. Handles interrupt cleanups.
1342 * 2. Retries if we had no matches, but there were ignored matches
1345 tw_collect(COMMAND command, int looking, struct Strbuf *exp_dir,
1346 struct Strbuf *exp_name, Char *target, Char *pat, int flags,
1353 xprintf("target = %S\n", target);
1358 volatile size_t omark;
1360 (*tw_start_entry[looking])(dir_fd, pat);
1361 InsideCompletion = 1;
1363 cleanup_pop_mark(omark);
1365 /* interrupted, clean up */
1367 ni = -1; /* flag error */
1370 omark = cleanup_push_mark();
1371 ni = tw_collect_items(command, looking, exp_dir, exp_name, target, pat,
1372 ni >= 0 ? flags : flags & ~TW_IGN_OK);
1373 cleanup_pop_mark(omark);
1378 InsideCompletion = 0;
1379 #if defined(SOLARIS2) && defined(i386) && !defined(__GNUC__)
1380 /* Compiler bug? (from PWP) */
1381 if ((looking == TW_LOGNAME) || (looking == TW_USER))
1383 else if (looking == TW_GRPNAME)
1387 #else /* !(SOLARIS2 && i386 && !__GNUC__) */
1388 (*tw_end_entry[looking])();
1389 #endif /* !(SOLARIS2 && i386 && !__GNUC__) */
1391 } /* end tw_collect */
1395 * List the items that were found
1397 * NOTE instead of looking at numerical vars listmax and listmaxrows
1398 * we can look at numerical var listmax, and have a string value
1399 * listmaxtype (or similar) than can have values 'items' and 'rows'
1400 * (by default interpreted as 'items', for backwards compatibility)
1403 tw_list_items(int looking, int numitems, int list_max)
1412 if ((ptr = varval(STRlistmax)) != STRNULL) {
1414 if (!Isdigit(*ptr)) {
1418 max_items = max_items * 10 + *ptr++ - '0';
1420 if ((max_items > 0) && (numitems > max_items) && list_max)
1421 max_items = numitems;
1426 if (max_items == 0 && (ptr = varval(STRlistmaxrows)) != STRNULL) {
1430 if (!Isdigit(*ptr)) {
1434 max_rows = max_rows * 10 + *ptr++ - '0';
1436 if (max_rows != 0 && looking != TW_JOB)
1437 rows = find_rows(tw_item_get(), numitems, TRUE);
1439 rows = numitems; /* underestimate for lines wider than the termH */
1440 if ((max_rows > 0) && (rows > max_rows) && list_max)
1447 if (max_items || max_rows) {
1453 name = CGETS(30, 5, "items");
1457 name = CGETS(30, 6, "rows");
1461 sname = strsave(name);
1462 cleanup_push(sname, xfree);
1463 xprintf(CGETS(30, 7, "There are %d %s, list them anyway? [n/y] "),
1465 cleanup_until(sname);
1467 /* We should be in Rawmode here, so no \n to catch */
1468 (void) xread(SHIN, &tc, 1);
1469 xprintf("%c\r\n", tc); /* echo the char, do a newline */
1471 * Perhaps we should use the yesexpr from the
1474 if (strchr(CGETS(30, 13, "Yy"), tc) == NULL)
1478 if (looking != TW_SIGNAL)
1479 qsort(tw_item_get(), numitems, sizeof(Char *), fcompare);
1480 if (looking != TW_JOB)
1481 print_by_column(STRNULL, tw_item_get(), numitems, TRUE);
1484 * print one item on every line because jobs can have spaces
1485 * and it is confusing.
1488 Char **w = tw_item_get();
1490 for (i = 0; i < numitems; i++) {
1491 xprintf("%S", w[i]);
1497 } /* end tw_list_items */
1501 * Perform a RECOGNIZE, LIST or SPELL command on string "word".
1504 * >= 0: SPELL command: "distance" (see spdist())
1505 * other: No. of items found
1506 * < 0: Error (message or beep is output)
1510 t_search(struct Strbuf *word, COMMAND command, int looking, int list_max,
1511 Char *pat, eChar suf)
1513 int numitems, /* Number of items matched */
1514 flags = 0, /* search flags */
1515 gpat = pat[0] != '\0', /* Glob pattern search */
1516 res; /* Return value */
1517 struct Strbuf exp_dir = Strbuf_INIT;/* dir after ~ expansion */
1518 struct Strbuf dir = Strbuf_INIT; /* /x/y/z/ part in /x/y/z/f */
1519 struct Strbuf exp_name = Strbuf_INIT;/* the recognized (extended) */
1520 Char *name, /* f part in /d/d/d/f name */
1521 *target; /* Target to expand/correct/list */
1525 * bugfix by Marty Grossman (grossman@CC5.BBN.COM): directory listing can
1526 * dump core when interrupted
1530 non_unique_match = FALSE; /* See the recexact code below */
1532 extract_dir_and_name(word->s, &dir, &name);
1533 cleanup_push(&dir, Strbuf_cleanup);
1534 cleanup_push(&name, xfree_indirect);
1537 * SPECIAL HARDCODED COMPLETIONS:
1538 * foo$variable -> TW_VARIABLE
1539 * ~user -> TW_LOGNAME
1542 if ((*word->s == '~') && (Strchr(word->s, '/') == NULL)) {
1543 looking = TW_LOGNAME;
1545 gpat = 0; /* Override pattern mechanism */
1547 else if ((target = Strrchr(name, '$')) != 0 &&
1548 (target[1] != '{' || Strchr(target, '}') == NULL) &&
1549 (Strchr(name, '/') == NULL)) {
1551 if (target[0] == '{') target++;
1552 looking = TW_VARIABLE;
1553 gpat = 0; /* Override pattern mechanism */
1559 * Try to figure out what we should be looking for
1561 if (looking & TW_PATH) {
1562 gpat = 0; /* pattern holds the pathname to be used */
1563 Strbuf_append(&exp_dir, pat);
1564 if (exp_dir.len != 0 && exp_dir.s[exp_dir.len - 1] != '/')
1565 Strbuf_append1(&exp_dir, '/');
1566 Strbuf_append(&exp_dir, dir.s);
1568 Strbuf_terminate(&exp_dir);
1569 cleanup_push(&exp_dir, Strbuf_cleanup);
1571 switch (looking & ~TW_PATH) {
1581 if (Strchr(word->s, '/') || (looking & TW_PATH)) {
1583 flags |= TW_EXEC_CHK;
1587 /* PWP: don't even bother when doing ALL of the commands */
1588 if (looking == TW_COMMAND && word->len == 0) {
1598 gpat = 0; /* pattern holds the name of the variable */
1602 if (command == LIST && pat != NULL) {
1616 * let fignore work only when we are not using a pattern
1618 flags |= (gpat == 0) ? TW_IGN_OK : TW_PAT_OK;
1621 xprintf(CGETS(30, 8, "looking = %d\n"), looking);
1640 if ((res = expand_dir(dir.s, &exp_dir, &dir_fd, command)) != 0)
1645 flags |= TW_DIR_CHK;
1649 * This is supposed to expand the directory stack.
1652 * 2. directories with the same name
1658 * Supposed to do delayed expansion, but it is inconsistent
1659 * from a user-interface point of view, since it does not
1660 * immediately obey addsuffix
1662 if ((res = expand_dir(dir.s, &exp_dir, &dir_fd, command)) != 0)
1664 if (isadirectory(exp_dir.s, name)) {
1665 if (exp_dir.len != 0 || name[0] != '\0') {
1666 Strbuf_append(&dir, name);
1667 if (dir.s[dir.len - 1] != '/')
1668 Strbuf_append1(&dir, '/');
1669 Strbuf_terminate(&dir);
1670 if ((res = expand_dir(dir.s, &exp_dir, &dir_fd, command)) != 0)
1672 if (word->len != 0 && word->s[word->len - 1] != '/') {
1673 Strbuf_append1(word, '/');
1674 Strbuf_terminate(word);
1680 if ((res = expand_dir(dir.s, &exp_dir, &dir_fd, command)) != 0)
1685 flags |= TW_TEXT_CHK;
1688 if ((res = expand_dir(dir.s, &exp_dir, &dir_fd, command)) != 0)
1692 case TW_PATH | TW_TEXT:
1693 case TW_PATH | TW_FILE:
1694 case TW_PATH | TW_DIRECTORY:
1695 case TW_PATH | TW_COMMAND:
1696 if ((dir_fd = opendir(short2str(exp_dir.s))) == NULL) {
1697 if (command == RECOGNIZE)
1699 xprintf("%S: %s", exp_dir.s, strerror(errno));
1700 if (command != RECOGNIZE)
1706 if (exp_dir.len != 0 && exp_dir.s[exp_dir.len - 1] != '/') {
1707 Strbuf_append1(&exp_dir, '/');
1708 Strbuf_terminate(&exp_dir);
1711 looking &= ~TW_PATH;
1715 flags |= TW_TEXT_CHK;
1722 flags |= TW_DIR_CHK;
1727 target = name = Strsave(word->s); /* so it can match things */
1731 abort(); /* Cannot happen */
1737 user_name = word->s + 1;
1742 user_name = word->s;
1745 * Check if the spelling was already correct
1746 * From: Rob McMahon <cudcv@cu.warwick.ac.uk>
1748 if (command == SPELL && xgetpwnam(short2str(user_name)) != NULL) {
1756 target = name = Strsave(user_name);
1762 target = name = Strsave(word->s); /* so it can match things */
1766 xprintf(CGETS(30, 9,
1767 "\n%s internal error: I don't know what I'm looking for!\n"),
1774 cleanup_push(&exp_name, Strbuf_cleanup);
1775 numitems = tw_collect(command, looking, &exp_dir, &exp_name, target, pat,
1783 case RECOGNIZE_SCROLL:
1787 Strbuf_terminate(&exp_name);
1788 tw_fixword(looking, word, dir.s, exp_name.s);
1790 if (!match_unique_match && is_set(STRaddsuffix) && numitems == 1) {
1792 case 0: /* Automatic suffix */
1793 Strbuf_append1(word,
1794 tw_suffix(looking, word, exp_dir.s, exp_name.s));
1797 case CHAR_ERR: /* No suffix */
1800 default: /* completion specified suffix */
1801 Strbuf_append1(word, suf);
1804 Strbuf_terminate(word);
1809 tw_list_items(looking, numitems, list_max);
1814 Strbuf_terminate(&exp_name);
1815 tw_fixword(looking, word, dir.s, exp_name.s);
1819 xprintf("Bad tw_command\n");
1825 cleanup_until(&dir);
1827 } /* end t_search */
1830 /* extract_dir_and_name():
1831 * parse full path in file into 2 parts: directory and file names
1832 * Should leave final slash (/) at end of dir.
1835 extract_dir_and_name(const Char *path, struct Strbuf *dir, Char **name)
1839 p = Strrchr(path, '/');
1842 p = Strrchr(path, ':');
1843 #endif /* WINNT_NATIVE */
1845 *name = Strsave(path);
1849 Strbuf_appendn(dir, path, p - path);
1851 Strbuf_terminate(dir);
1852 } /* end extract_dir_and_name */
1856 * expand "/$old1/$old2/old3/"
1857 * to "/value_of_old1/value_of_old2/old3/"
1860 dollar(const Char *old)
1862 struct Strbuf buf = Strbuf_INIT;
1866 Strbuf_append1(&buf, *old++);
1868 if (expdollar(&buf, &old, QUOTE) == 0) {
1874 return Strbuf_finish(&buf);
1879 * expand ~person/foo to home_directory_of_person/foo
1880 * or =<stack-entry> to <dir in stack entry>
1883 tilde(struct Strbuf *new, Char *old)
1893 for (o = old; *o && *o != '/'; o++)
1895 name = Strnsave(old, o - old);
1896 home = gethdir(name);
1900 Strbuf_append(new, home);
1902 /* If the home directory expands to "/", we do
1903 * not want to create "//" by appending a slash from o.
1905 if (new->s[0] == '/' && new->len == 1 && *o == '/')
1907 Strbuf_append(new, o);
1912 if ((p = globequal(old)) == NULL)
1915 Strbuf_append(new, p);
1922 Strbuf_append(new, old);
1925 Strbuf_terminate(new);
1929 Strbuf_terminate(new);
1935 * Open the directory given, expanding ~user and $var
1936 * Optionally normalize the path given
1939 expand_dir(const Char *dir, struct Strbuf *edir, DIR **dfd, COMMAND cmd)
1945 cleanup_push(tdir, xfree);
1947 (tilde(edir, tdir) != 0) ||
1948 !(nd = dnormalize(edir->len ? edir->s : STRdot,
1949 symlinks == SYM_IGNORE || symlinks == SYM_EXPAND)) ||
1950 ((*dfd = opendir(short2str(nd))) == NULL)) {
1952 if (cmd == SPELL || SearchNoDirErr) {
1953 cleanup_until(tdir);
1957 * From: Amos Shapira <amoss@cs.huji.ac.il>
1958 * Print a better message when completion fails
1960 xprintf("\n%S %s\n", edir->len ? edir->s : (tdir ? tdir : dir),
1961 (errno == ENOTDIR ? CGETS(30, 10, "not a directory") :
1962 (errno == ENOENT ? CGETS(30, 11, "not found") :
1963 CGETS(30, 12, "unreadable"))));
1965 cleanup_until(tdir);
1968 cleanup_until(tdir);
1974 * Copy and append a / if there was one
1976 slash = edir->len != 0 && edir->s[edir->len - 1] == '/';
1978 Strbuf_append(edir, nd);
1979 if (slash != 0 && edir->s[edir->len - 1] != '/')
1980 Strbuf_append1(edir, '/');
1981 Strbuf_terminate(edir);
1986 } /* end expand_dir */
1990 * Returns true if the directory should not be stat'd,
1992 * This way, things won't grind to a halt when you complete in /afs
1993 * or very large directories.
2001 if ((vp = adrof(STRnostat)) == NULL || (cp = vp->vec) == NULL)
2003 for (; *cp != NULL; cp++) {
2004 if (Strcmp(*cp, STRstar) == 0)
2006 if (Gmatch(dir, *cp))
2014 * Return a character that signifies a filetype
2015 * symbology from 4.3 ls command.
2018 filetype(Char *dir, Char *file)
2025 if (nostat(dir)) return(' ');
2027 path = Strspl(dir, file);
2028 ptr = short2str(path);
2031 if (lstat(ptr, &statb) != -1) {
2033 if (S_ISLNK(statb.st_mode)) { /* Symbolic link */
2034 if (adrof(STRlistlinks)) {
2035 if (stat(ptr, &statb) == -1)
2037 else if (S_ISDIR(statb.st_mode))
2047 if (S_ISSOCK(statb.st_mode)) /* Socket */
2051 if (S_ISFIFO(statb.st_mode)) /* Named Pipe */
2055 if (S_ISHIDDEN(statb.st_mode)) /* Hidden Directory [aix] */
2060 struct stat hpstatb;
2063 p2 = strspl(ptr, "+"); /* Must append a '+' and re-stat(). */
2064 if ((stat(p2, &hpstatb) != -1) && S_ISCDF(hpstatb.st_mode)) {
2066 return ('+'); /* Context Dependent Files [hpux] */
2072 if (S_ISNWK(statb.st_mode)) /* Network Special [hpux] */
2076 if (S_ISCHR(statb.st_mode)) /* char device */
2080 if (S_ISBLK(statb.st_mode)) /* block device */
2084 if (S_ISDIR(statb.st_mode)) /* normal Directory */
2087 if (statb.st_mode & (S_IXUSR|S_IXGRP|S_IXOTH))
2092 } /* end filetype */
2096 * Return trus if the file is a directory
2099 isadirectory(const Char *dir, const Char *file)
2100 /* return 1 if dir/file is a directory */
2101 /* uses stat rather than lstat to get dest. */
2108 path = Strspl(dir, file);
2109 cpath = short2str(path);
2111 if (stat(cpath, &statb) >= 0) { /* resolve through symlink */
2113 if (S_ISSOCK(statb.st_mode)) /* Socket */
2117 if (S_ISFIFO(statb.st_mode)) /* Named Pipe */
2120 if (S_ISDIR(statb.st_mode)) /* normal Directory */
2125 } /* end isadirectory */
2130 * Return how many rows needed to print sorted down columns
2133 find_rows(Char *items[], int count, int no_file_suffix)
2135 int i, columns, rows;
2136 unsigned int maxwidth = 0;
2138 for (i = 0; i < count; i++) /* find widest string */
2139 maxwidth = max(maxwidth, (unsigned int) Strlen(items[i]));
2141 maxwidth += no_file_suffix ? 1 : 2; /* for the file tag and space */
2142 columns = (TermH + 1) / maxwidth; /* PWP: terminal size change */
2145 rows = (count + (columns - 1)) / columns;
2148 } /* end rows_needed_by_print_by_column */
2151 /* print_by_column():
2152 * Print sorted down columns or across columns when the first
2153 * word of $listflags shell variable contains 'x'.
2157 print_by_column(Char *dir, Char *items[], int count, int no_file_suffix)
2159 int i, r, c, columns, rows;
2161 unsigned int wx, maxwidth = 0;
2165 lbuffed = 0; /* turn off line buffering */
2168 across = ((val = varval(STRlistflags)) != STRNULL) &&
2169 (Strchr(val, 'x') != NULL);
2171 for (i = 0; i < count; i++) { /* find widest string */
2172 maxwidth = max(maxwidth, (unsigned int) NLSStringWidth(items[i]));
2175 maxwidth += no_file_suffix ? 1 : 2; /* for the file tag and space */
2176 columns = TermH / maxwidth; /* PWP: terminal size change */
2177 if (!columns || !isatty(didfds ? 1 : SHOUT))
2179 rows = (count + (columns - 1)) / columns;
2182 for (r = 0; r < rows; r++) {
2183 for (c = 0; c < columns; c++) {
2184 i = across ? (i + 1) : (c * rows + r);
2188 w = Strlen(items[i]);
2191 if (no_file_suffix) {
2192 /* Print the command name */
2193 Char f = items[i][w - 1];
2194 items[i][w - 1] = 0;
2195 print_with_color(items[i], w - 1, f);
2196 items[i][w - 1] = f;
2199 /* Print filename followed by '/' or '*' or ' ' */
2200 print_with_color(items[i], w, filetype(dir, items[i]));
2203 #else /* ifndef COLOR_LS_F */
2204 if (no_file_suffix) {
2205 /* Print the command name */
2206 xprintf("%S", items[i]);
2209 /* Print filename followed by '/' or '*' or ' ' */
2210 xprintf("%-S%c", items[i], filetype(dir, items[i]));
2213 #endif /* COLOR_LS_F */
2215 if (c < (columns - 1)) { /* Not last column? */
2216 w = NLSStringWidth(items[i]) + wx;
2217 for (; w < maxwidth; w++)
2229 lbuffed = 1; /* turn back on line buffering */
2231 } /* end print_by_column */
2235 * Compare strings ignoring the quoting chars
2238 StrQcmp(const Char *str1, const Char *str2)
2240 for (; *str1 && samecase(*str1 & TRIM) == samecase(*str2 & TRIM);
2244 * The following case analysis is necessary so that characters which look
2245 * negative collate low against normal characters but high against the
2246 * end-of-string NUL.
2248 if (*str1 == '\0' && *str2 == '\0')
2250 else if (*str1 == '\0')
2252 else if (*str2 == '\0')
2255 return ((*str1 & TRIM) - (*str2 & TRIM));
2260 * Comparison routine for qsort, (Char **, Char **)
2263 fcompare(const void *xfile1, const void *xfile2)
2265 const Char *const *file1 = xfile1, *const *file2 = xfile2;
2267 return collate(*file1, *file2);
2268 } /* end fcompare */
2272 * Concatenate src onto tail of des.
2273 * Des is a string whose maximum length is count.
2274 * Always null terminate.
2277 catn(Char *des, const Char *src, int count)
2279 while (*des && --count > 0)
2282 if ((*des++ = *src++) == 0)
2289 * like strncpy but always leave room for trailing \0
2290 * and always null terminate.
2293 copyn(Char *des, const Char *src, size_t count)
2295 while (--count != 0)
2296 if ((*des++ = *src++) == 0)
2303 * like it's normal string counter-part
2313 /* Search the STR_environ for the entry matching str. */
2314 for (var = STR_environ; var != NULL && *var != NULL; var++)
2315 if (Strlen(*var) >= len && (*var)[len] == '=') {
2316 /* Temporarily terminate the string so we can copy the variable
2319 res = StrQcmp(*var, str);
2320 /* Restore the '=' and return a pointer to the value of the
2321 environment variable. */
2324 return (&((*var)[len + 1]));
2330 struct scroll_tab_list *scroll_tab = 0;
2333 add_scroll_tab(Char *item)
2335 struct scroll_tab_list *new_scroll;
2337 new_scroll = xmalloc(sizeof(struct scroll_tab_list));
2338 new_scroll->element = Strsave(item);
2339 new_scroll->next = scroll_tab;
2340 scroll_tab = new_scroll;
2344 choose_scroll_tab(struct Strbuf *exp_name, int cnt)
2346 struct scroll_tab_list *loop;
2350 ptr = xmalloc(sizeof(Char *) * cnt);
2351 cleanup_push(ptr, xfree);
2353 for(loop = scroll_tab; loop && (tmp >= 0); loop = loop->next)
2354 ptr[--tmp] = loop->element;
2356 qsort(ptr, cnt, sizeof(Char *), fcompare);
2359 Strbuf_append(exp_name, ptr[curchoice]);
2360 Strbuf_terminate(exp_name);
2365 free_scroll_tab(void)
2367 struct scroll_tab_list *loop;
2371 scroll_tab = scroll_tab->next;
2372 xfree(loop->element);