1/* $Header: /src/pub/tcsh/sh.file.c,v 3.23 2003/02/08 20:03:26 christos Exp $ */
|
| 1/* $Header: /src/pub/tcsh/sh.file.c,v 3.28 2005/01/05 16:06:13 christos Exp $ */ |
2/*
3 * sh.file.c: File completion for csh. This file is not used in tcsh.
4 */
5/*-
6 * Copyright (c) 1980, 1991 The Regents of the University of California.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33#include "sh.h"
34#include "ed.h"
35
|
36RCSID("$Id: sh.file.c,v 3.23 2003/02/08 20:03:26 christos Exp $")
|
| 36RCSID("$Id: sh.file.c,v 3.28 2005/01/05 16:06:13 christos Exp $") |
37
38#if defined(FILEC) && defined(TIOCSTI)
39
40/*
41 * Tenex style file name recognition, .. and more.
42 * History:
43 * Author: Ken Greer, Sept. 1975, CMU.
44 * Finally got around to adding to the Cshell., Ken Greer, Dec. 1981.
45 */
46
47#define ON 1
48#define OFF 0
49#ifndef TRUE
50#define TRUE 1
51#endif
52#ifndef FALSE
53#define FALSE 0
54#endif
55
56#define ESC CTL_ESC('\033')
57
58typedef enum {
59 LIST, RECOGNIZE
60} COMMAND;
61
62static void setup_tty __P((int));
63static void back_to_col_1 __P((void));
64static void pushback __P((Char *));
65static void catn __P((Char *, Char *, int));
66static void copyn __P((Char *, Char *, int));
|
67static Char filetype __P((Char *, Char *));
68static void print_by_column __P((Char *, Char *[], int));
|
67static int filetype __P((Char *, Char *));
68static void print_by_column __P((Char *, Char *[], size_t)); |
69static Char *tilde __P((Char *, Char *));
70static void retype __P((void));
71static void beep __P((void));
72static void print_recognized_stuff __P((Char *));
73static void extract_dir_and_name __P((Char *, Char *, Char *));
74static Char *getitem __P((DIR *, int));
75static void free_items __P((Char **, size_t));
76static int tsearch __P((Char *, COMMAND, int));
77static int compare __P((const ptr_t, const ptr_t));
|
78static int recognize __P((Char *, Char *, int, int));
|
| 78static int recognize __P((Char *, Char *, int, size_t)); |
79static int is_prefix __P((Char *, Char *));
80static int is_suffix __P((Char *, Char *));
81static int ignored __P((Char *));
82
83
84/*
85 * Put this here so the binary can be patched with adb to enable file
86 * completion by default. Filec controls completion, nobeep controls
87 * ringing the terminal bell on incomplete expansions.
88 */
|
89bool filec = 0;
|
| 89int filec = 0; |
90
91static void
92setup_tty(on)
93 int on;
94{
95#ifdef TERMIO
96# ifdef POSIX
97 struct termios tchars;
98# else
99 struct termio tchars;
100# endif /* POSIX */
101
102# ifdef POSIX
103 (void) tcgetattr(SHIN, &tchars);
104# else
105 (void) ioctl(SHIN, TCGETA, (ioctl_t) &tchars);
106# endif /* POSIX */
107 if (on) {
108 tchars.c_cc[VEOL] = ESC;
109 if (tchars.c_lflag & ICANON)
110# ifdef POSIX
111 on = TCSADRAIN;
112# else
113 on = TCSETA;
114# endif /* POSIX */
115 else {
116# ifdef POSIX
117 on = TCSAFLUSH;
118# else
119 on = TCSETAF;
120# endif /* POSIX */
121 tchars.c_lflag |= ICANON;
122
123 }
124 }
125 else {
126 tchars.c_cc[VEOL] = _POSIX_VDISABLE;
127# ifdef POSIX
128 on = TCSADRAIN;
129# else
130 on = TCSETA;
131# endif /* POSIX */
132 }
133# ifdef POSIX
134 (void) tcsetattr(SHIN, on, &tchars);
135# else
136 (void) ioctl(SHIN, on, (ioctl_t) &tchars);
137# endif /* POSIX */
138#else
139 struct sgttyb sgtty;
140 static struct tchars tchars;/* INT, QUIT, XON, XOFF, EOF, BRK */
141
142 if (on) {
143 (void) ioctl(SHIN, TIOCGETC, (ioctl_t) & tchars);
144 tchars.t_brkc = ESC;
145 (void) ioctl(SHIN, TIOCSETC, (ioctl_t) & tchars);
146 /*
147 * This must be done after every command: if the tty gets into raw or
148 * cbreak mode the user can't even type 'reset'.
149 */
150 (void) ioctl(SHIN, TIOCGETP, (ioctl_t) & sgtty);
151 if (sgtty.sg_flags & (RAW | CBREAK)) {
152 sgtty.sg_flags &= ~(RAW | CBREAK);
153 (void) ioctl(SHIN, TIOCSETP, (ioctl_t) & sgtty);
154 }
155 }
156 else {
157 tchars.t_brkc = -1;
158 (void) ioctl(SHIN, TIOCSETC, (ioctl_t) & tchars);
159 }
160#endif /* TERMIO */
161}
162
163/*
164 * Move back to beginning of current line
165 */
166static void
167back_to_col_1()
168{
169#ifdef TERMIO
170# ifdef POSIX
171 struct termios tty, tty_normal;
172# else
173 struct termio tty, tty_normal;
174# endif /* POSIX */
175#else
176 struct sgttyb tty, tty_normal;
177#endif /* TERMIO */
178
179# ifdef BSDSIGS
180 sigmask_t omask = sigblock(sigmask(SIGINT));
181# else
182 (void) sighold(SIGINT);
183# endif /* BSDSIGS */
184
185#ifdef TERMIO
186# ifdef POSIX
187 (void) tcgetattr(SHOUT, &tty);
188# else
189 (void) ioctl(SHOUT, TCGETA, (ioctl_t) &tty_normal);
190# endif /* POSIX */
191 tty_normal = tty;
192 tty.c_iflag &= ~INLCR;
193 tty.c_oflag &= ~ONLCR;
194# ifdef POSIX
195 (void) tcsetattr(SHOUT, TCSANOW, &tty);
196# else
197 (void) ioctl(SHOUT, TCSETAW, (ioctl_t) &tty);
198# endif /* POSIX */
199 (void) write(SHOUT, "\r", 1);
200# ifdef POSIX
201 (void) tcsetattr(SHOUT, TCSANOW, &tty_normal);
202# else
203 (void) ioctl(SHOUT, TCSETAW, (ioctl_t) &tty_normal);
204# endif /* POSIX */
205#else
206 (void) ioctl(SHIN, TIOCGETP, (ioctl_t) & tty);
207 tty_normal = tty;
208 tty.sg_flags &= ~CRMOD;
209 (void) ioctl(SHIN, TIOCSETN, (ioctl_t) & tty);
210 (void) write(SHOUT, "\r", 1);
211 (void) ioctl(SHIN, TIOCSETN, (ioctl_t) & tty_normal);
212#endif /* TERMIO */
213
214# ifdef BSDSIGS
215 (void) sigsetmask(omask);
216# else
217 (void) sigrelse(SIGINT);
218# endif /* BSDISGS */
219}
220
221/*
222 * Push string contents back into tty queue
223 */
224static void
225pushback(string)
226 Char *string;
227{
228 Char *p;
|
229 char c;
|
229#ifdef TERMIO
230# ifdef POSIX
231 struct termios tty, tty_normal;
232# else
233 struct termio tty, tty_normal;
234# endif /* POSIX */
235#else
236 struct sgttyb tty, tty_normal;
237#endif /* TERMIO */
238
239#ifdef BSDSIGS
240 sigmask_t omask = sigblock(sigmask(SIGINT));
241#else
242 (void) sighold(SIGINT);
243#endif /* BSDSIGS */
244
245#ifdef TERMIO
246# ifdef POSIX
247 (void) tcgetattr(SHOUT, &tty);
248# else
249 (void) ioctl(SHOUT, TCSETAW, (ioctl_t) &tty);
250# endif /* POSIX */
251 tty_normal = tty;
252 tty.c_lflag &= ~(ECHOKE | ECHO | ECHOE | ECHOK | ECHONL | ECHOPRT | ECHOCTL);
253# ifdef POSIX
254 (void) tcsetattr(SHOUT, TCSANOW, &tty);
255# else
256 (void) ioctl(SHOUT, TCSETAW, (ioctl_t) &tty);
257# endif /* POSIX */
258
|
260 for (p = string; (c = *p) != '\0'; p++)
261 (void) ioctl(SHOUT, TIOCSTI, (ioctl_t) & c);
|
259 for (p = string; *p != '\0'; p++) {
260 char buf[MB_LEN_MAX];
261 size_t i, len;
262
263 len = one_wctomb(buf, *p & CHAR);
264 for (i = 0; i < len; i++)
265 (void) ioctl(SHOUT, TIOCSTI, (ioctl_t) &buf[i]);
266 } |
267# ifdef POSIX
268 (void) tcsetattr(SHOUT, TCSANOW, &tty_normal);
269# else
270 (void) ioctl(SHOUT, TCSETAW, (ioctl_t) &tty_normal);
271# endif /* POSIX */
272#else
273 (void) ioctl(SHOUT, TIOCGETP, (ioctl_t) & tty);
274 tty_normal = tty;
275 tty.sg_flags &= ~ECHO;
276 (void) ioctl(SHOUT, TIOCSETN, (ioctl_t) & tty);
277
278 for (p = string; c = *p; p++)
279 (void) ioctl(SHOUT, TIOCSTI, (ioctl_t) & c);
280 (void) ioctl(SHOUT, TIOCSETN, (ioctl_t) & tty_normal);
281#endif /* TERMIO */
282
283# ifdef BSDSIGS
284 (void) sigsetmask(omask);
285# else
286 (void) sigrelse(SIGINT);
287# endif /* BSDISGS */
288}
289
290/*
291 * Concatenate src onto tail of des.
292 * Des is a string whose maximum length is count.
293 * Always null terminate.
294 */
295static void
296catn(des, src, count)
297 Char *des, *src;
298 int count;
299{
300 while (--count >= 0 && *des)
301 des++;
302 while (--count >= 0)
303 if ((*des++ = *src++) == 0)
304 return;
305 *des = '\0';
306}
307
308/*
309 * Like strncpy but always leave room for trailing \0
310 * and always null terminate.
311 */
312static void
313copyn(des, src, count)
314 Char *des, *src;
315 int count;
316{
317 while (--count >= 0)
318 if ((*des++ = *src++) == 0)
319 return;
320 *des = '\0';
321}
322
|
318static Char
|
| 323static int |
324filetype(dir, file)
325 Char *dir, *file;
326{
327 Char path[MAXPATHLEN];
328 struct stat statb;
329
330 catn(Strcpy(path, dir), file, sizeof(path) / sizeof(Char));
331 if (lstat(short2str(path), &statb) == 0) {
332 switch (statb.st_mode & S_IFMT) {
333 case S_IFDIR:
334 return ('/');
335
336 case S_IFLNK:
337 if (stat(short2str(path), &statb) == 0 && /* follow it out */
338 S_ISDIR(statb.st_mode))
339 return ('>');
340 else
341 return ('@');
342
343 case S_IFSOCK:
344 return ('=');
345
346 default:
347 if (statb.st_mode & 0111)
348 return ('*');
349 }
350 }
351 return (' ');
352}
353
354static struct winsize win;
355
356/*
357 * Print sorted down columns
358 */
359static void
360print_by_column(dir, items, count)
361 Char *dir, *items[];
|
357 int count;
|
| 362 size_t count; |
363{
|
359 int i, rows, r, c, maxwidth = 0, columns;
|
364 size_t i;
365 int rows, r, c, maxwidth = 0, columns; |
366
367 if (ioctl(SHOUT, TIOCGWINSZ, (ioctl_t) & win) < 0 || win.ws_col == 0)
368 win.ws_col = 80;
369 for (i = 0; i < count; i++)
370 maxwidth = maxwidth > (r = Strlen(items[i])) ? maxwidth : r;
371 maxwidth += 2; /* for the file tag and space */
372 columns = win.ws_col / maxwidth;
373 if (columns == 0)
374 columns = 1;
375 rows = (count + (columns - 1)) / columns;
376 for (r = 0; r < rows; r++) {
377 for (c = 0; c < columns; c++) {
378 i = c * rows + r;
379 if (i < count) {
380 int w;
381
382 xprintf("%S", items[i]);
383 xputchar(dir ? filetype(dir, items[i]) : ' ');
384 if (c < columns - 1) { /* last column? */
385 w = Strlen(items[i]) + 1;
386 for (; w < maxwidth; w++)
387 xputchar(' ');
388 }
389 }
390 }
391 xputchar('\r');
392 xputchar('\n');
393 }
394}
395
396/*
397 * Expand file name with possible tilde usage
398 * ~person/mumble
399 * expands to
400 * home_directory_of_person/mumble
401 */
402static Char *
403tilde(new, old)
404 Char *new, *old;
405{
406 Char *o, *p;
407 struct passwd *pw;
408 static Char person[40];
409
410 if (old[0] != '~')
411 return (Strcpy(new, old));
412
413 for (p = person, o = &old[1]; *o && *o != '/'; *p++ = *o++);
414 *p = '\0';
415 if (person[0] == '\0')
416 (void) Strcpy(new, varval(STRhome));
417 else {
418 pw = getpwnam(short2str(person));
419 if (pw == NULL)
420 return (NULL);
421 (void) Strcpy(new, str2short(pw->pw_dir));
422 }
423 (void) Strcat(new, o);
424 return (new);
425}
426
427/*
428 * Cause pending line to be printed
429 */
430static void
431retype()
432{
433#ifdef TERMIO
434# ifdef POSIX
435 struct termios tty;
436
437 (void) tcgetattr(SHOUT, &tty);
438# else
439 struct termio tty;
440
441 (void) ioctl(SHOUT, TCGETA, (ioctl_t) &tty);
442# endif /* POSIX */
443
444 tty.c_lflag |= PENDIN;
445
446# ifdef POSIX
447 (void) tcsetattr(SHOUT, TCSANOW, &tty);
448# else
449 (void) ioctl(SHOUT, TCSETAW, (ioctl_t) &tty);
450# endif /* POSIX */
451#else
452 int pending_input = LPENDIN;
453
454 (void) ioctl(SHOUT, TIOCLBIS, (ioctl_t) & pending_input);
455#endif /* TERMIO */
456}
457
458static void
459beep()
460{
461 if (adrof(STRnobeep) == 0)
462#ifdef IS_ASCII
463 (void) write(SHOUT, "\007", 1);
464#else
465 {
466 unsigned char beep_ch = CTL_ESC('\007');
467 (void) write(SHOUT, &beep_ch, 1);
468 }
469#endif
470}
471
472/*
473 * Erase that silly ^[ and
474 * print the recognized part of the string
475 */
476static void
477print_recognized_stuff(recognized_part)
478 Char *recognized_part;
479{
480 /* An optimized erasing of that silly ^[ */
481 (void) putraw('\b');
482 (void) putraw('\b');
483 switch (Strlen(recognized_part)) {
484
485 case 0: /* erase two Characters: ^[ */
486 (void) putraw(' ');
487 (void) putraw(' ');
488 (void) putraw('\b');
489 (void) putraw('\b');
490 break;
491
492 case 1: /* overstrike the ^, erase the [ */
493 xprintf("%S", recognized_part);
494 (void) putraw(' ');
495 (void) putraw('\b');
496 break;
497
498 default: /* overstrike both Characters ^[ */
499 xprintf("%S", recognized_part);
500 break;
501 }
502 flush();
503}
504
505/*
506 * Parse full path in file into 2 parts: directory and file names
507 * Should leave final slash (/) at end of dir.
508 */
509static void
510extract_dir_and_name(path, dir, name)
511 Char *path, *dir, *name;
512{
513 Char *p;
514
515 p = Strrchr(path, '/');
516 if (p == NULL) {
517 copyn(name, path, MAXNAMLEN);
518 dir[0] = '\0';
519 }
520 else {
521 copyn(name, ++p, MAXNAMLEN);
522 copyn(dir, path, p - path);
523 }
524}
|
519/* atp vmsposix - I need to remove all the setpwent
520 * getpwent endpwent stuff. VMS_POSIX has getpwnam getpwuid
521 * and getlogin. This needs fixing. (There is no access to
522 * pw->passwd in VMS - a secure system benefit :-| )
523 */
|
| 525 |
526static Char *
527getitem(dir_fd, looking_for_lognames)
528 DIR *dir_fd;
529 int looking_for_lognames;
530{
531 struct passwd *pw;
532 struct dirent *dirp;
533
534 if (looking_for_lognames) {
|
533#ifdef _VMS_POSIX
|
| 535#ifndef HAVE_GETPWENT |
536 return (NULL);
537#else
538 if ((pw = getpwent()) == NULL)
539 return (NULL);
540 return (str2short(pw->pw_name));
541#endif /* atp vmsposix */
542 }
543 if ((dirp = readdir(dir_fd)) != NULL)
544 return (str2short(dirp->d_name));
545 return (NULL);
546}
547
548static void
549free_items(items, numitems)
550 Char **items;
551 size_t numitems;
552{
553 size_t i;
554
555 for (i = 0; i < numitems; i++)
556 xfree((ptr_t) items[i]);
557 xfree((ptr_t) items);
558}
559
560#ifdef BSDSIGS
561# define FREE_ITEMS(items, numitems) { \
562 sigmask_t omask;\
563\
564 omask = sigblock(sigmask(SIGINT));\
565 free_items(items, numitems);\
566 (void) sigsetmask(omask);\
567}
568#else
569# define FREE_ITEMS(items, numitems) { \
570 (void) sighold(SIGINT);\
571 free_items(items, numitems);\
572 (void) sigrelse(SIGINT);\
573}
574#endif /* BSDSIGS */
575
576/*
577 * Perform a RECOGNIZE or LIST command on string "word".
578 */
579static int
580tsearch(word, command, max_word_length)
581 Char *word;
582 int max_word_length;
583 COMMAND command;
584{
585 DIR *dir_fd;
|
584 int numitems = 0, ignoring = TRUE, nignored = 0;
|
| 586 int ignoring = TRUE, nignored = 0; |
587 int name_length, looking_for_lognames;
588 Char tilded_dir[MAXPATHLEN + 1], dir[MAXPATHLEN + 1];
589 Char name[MAXNAMLEN + 1], extended_name[MAXNAMLEN + 1];
590 Char *item;
591 Char **items = NULL;
|
590 size_t maxitems = 0;
|
| 592 size_t numitems = 0, maxitems = 0; |
593
594 looking_for_lognames = (*word == '~') && (Strchr(word, '/') == NULL);
595 if (looking_for_lognames) {
|
594#ifndef _VMS_POSIX
|
| 596#ifdef HAVE_GETPWENT |
597 (void) setpwent();
|
596#endif /*atp vmsposix */
|
| 598#endif |
599 copyn(name, &word[1], MAXNAMLEN); /* name sans ~ */
600 dir_fd = NULL;
601 }
602 else {
603 extract_dir_and_name(word, dir, name);
604 if (tilde(tilded_dir, dir) == 0)
605 return (0);
606 dir_fd = opendir(*tilded_dir ? short2str(tilded_dir) : ".");
607 if (dir_fd == NULL)
608 return (0);
609 }
610
611again: /* search for matches */
612 name_length = Strlen(name);
613 for (numitems = 0;
614 (item = getitem(dir_fd, looking_for_lognames)) != NULL;) {
615 if (!is_prefix(name, item))
616 continue;
617 /* Don't match . files on null prefix match */
618 if (name_length == 0 && item[0] == '.' &&
619 !looking_for_lognames)
620 continue;
621 if (command == LIST) {
622 if (numitems >= maxitems) {
623 maxitems += 1024;
624 if (items == NULL)
625 items = (Char **) xmalloc(sizeof(*items) * maxitems);
626 else
627 items = (Char **) xrealloc((ptr_t) items,
628 sizeof(*items) * maxitems);
629 }
630 items[numitems] = (Char *) xmalloc((size_t) (Strlen(item) + 1) *
631 sizeof(Char));
632 copyn(items[numitems], item, MAXNAMLEN);
633 numitems++;
634 }
635 else { /* RECOGNIZE command */
636 if (ignoring && ignored(item))
637 nignored++;
638 else if (recognize(extended_name,
639 item, name_length, ++numitems))
640 break;
641 }
642 }
643 if (ignoring && numitems == 0 && nignored > 0) {
644 ignoring = FALSE;
645 nignored = 0;
|
644 if (looking_for_lognames)
645#ifndef _VMS_POSIX
|
646 if (looking_for_lognames) {
647#ifdef HAVE_GETPWENT |
648 (void) setpwent();
649#endif /* atp vmsposix */
|
648 else
|
| 650 } else |
651 rewinddir(dir_fd);
652 goto again;
653 }
654
|
653 if (looking_for_lognames)
654#ifndef _VMS_POSIX
|
655 if (looking_for_lognames) {
656#ifndef HAVE_GETPWENT |
657 (void) endpwent();
|
656#endif /*atp vmsposix */
657 else
|
658#endif
659 } else |
660 (void) closedir(dir_fd);
661 if (numitems == 0)
662 return (0);
663 if (command == RECOGNIZE) {
664 if (looking_for_lognames)
665 copyn(word, STRtilde, 1);
666 else
667 /* put back dir part */
668 copyn(word, dir, max_word_length);
669 /* add extended name */
670 catn(word, extended_name, max_word_length);
671 return (numitems);
672 }
673 else { /* LIST */
|
672 qsort((ptr_t) items, (size_t) numitems, sizeof(items[0]),
|
| 674 qsort((ptr_t) items, numitems, sizeof(items[0]), |
675 (int (*) __P((const void *, const void *))) compare);
676 print_by_column(looking_for_lognames ? NULL : tilded_dir,
677 items, numitems);
678 if (items != NULL)
679 FREE_ITEMS(items, numitems);
680 }
681 return (0);
682}
683
684
685static int
686compare(p, q)
687 const ptr_t p, q;
688{
|
687#if defined(NLS) && !defined(NOSTRCOLL)
688 errno = 0; /* strcoll sets errno, another brain-damage */
689
690 return (strcoll(*(char **) p, *(char **) q));
|
689#ifdef WIDE_STRINGS
690 errno = 0;
691
692 return (wcscoll(*(Char **) p, *(Char **) q)); |
693#else
|
692 return (strcmp(*(char **) p, *(char **) q));
693#endif /* NLS && !NOSTRCOLL */
|
694 char *p1, *q1;
695 int res;
696
697 p1 = strsave(short2str(*(Char **) p));
698 q1 = strsave(short2str(*(Char **) q));
699# if defined(NLS) && !defined(NOSTRCOLL)
700 errno = 0; /* strcoll sets errno, another brain-damage */
701 res = strcoll(p1, q1);
702# else
703 res = strcmp(p1, q1);
704# endif /* NLS && !NOSTRCOLL */
705 xfree (p1);
706 xfree (q1);
707 return res;
708#endif /* not WIDE_STRINGS */ |
709}
710
711/*
712 * Object: extend what user typed up to an ambiguity.
713 * Algorithm:
714 * On first match, copy full item (assume it'll be the only match)
715 * On subsequent matches, shorten extended_name to the first
716 * Character mismatch between extended_name and item.
717 * If we shorten it back to the prefix length, stop searching.
718 */
719static int
720recognize(extended_name, item, name_length, numitems)
721 Char *extended_name, *item;
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707 int name_length, numitems;
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722 int name_length;
723 size_t numitems; |
724{
725 if (numitems == 1) /* 1st match */
726 copyn(extended_name, item, MAXNAMLEN);
727 else { /* 2nd & subsequent matches */
728 Char *x, *ent;
729 int len = 0;
730
731 x = extended_name;
732 for (ent = item; *x && *x == *ent++; x++, len++);
733 *x = '\0'; /* Shorten at 1st Char diff */
734 if (len == name_length) /* Ambiguous to prefix? */
735 return (-1); /* So stop now and save time */
736 }
737 return (0);
738}
739
740/*
741 * Return true if check matches initial Chars in template.
742 * This differs from PWB imatch in that if check is null
743 * it matches anything.
744 */
745static int
746is_prefix(check, template)
747 Char *check, *template;
748{
749 do
750 if (*check == 0)
751 return (TRUE);
752 while (*check++ == *template++);
753 return (FALSE);
754}
755
756/*
757 * Return true if the Chars in template appear at the
758 * end of check, I.e., are it's suffix.
759 */
760static int
761is_suffix(check, template)
762 Char *check, *template;
763{
764 Char *c, *t;
765
766 for (c = check; *c++;);
767 for (t = template; *t++;);
768 for (;;) {
769 if (t == template)
770 return 1;
771 if (c == check || *--t != *--c)
772 return 0;
773 }
774}
775
776int
777tenex(inputline, inputline_size)
778 Char *inputline;
779 int inputline_size;
780{
781 int numitems, num_read;
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766 char tinputline[BUFSIZE];
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| 782 char tinputline[BUFSIZE + 1]; |
783
784
785 setup_tty(ON);
786
787 while ((num_read = read(SHIN, tinputline, BUFSIZE)) > 0) {
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772 int i;
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788 static Char delims[] = {' ', '\'', '"', '\t', ';', '&', '<',
789 '>', '(', ')', '|', '^', '%', '\0'};
790 Char *str_end, *word_start, last_Char, should_retype;
791 int space_left;
792 COMMAND command;
793
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779 for (i = 0; i < num_read; i++)
780 inputline[i] = (unsigned char) tinputline[i];
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794 tinputline[num_read] = 0;
795 Strcpy(inputline, str2short(tinputline));
796 num_read = Strlen(inputline); |
797 last_Char = inputline[num_read - 1] & ASCII;
798
799 if (last_Char == '\n' || num_read == inputline_size)
800 break;
801 command = (last_Char == ESC) ? RECOGNIZE : LIST;
802 if (command == LIST)
803 xputchar('\n');
804 str_end = &inputline[num_read];
805 if (last_Char == ESC)
806 --str_end; /* wipeout trailing cmd Char */
807 *str_end = '\0';
808 /*
809 * Find LAST occurence of a delimiter in the inputline. The word start
810 * is one Character past it.
811 */
812 for (word_start = str_end; word_start > inputline; --word_start)
813 if (Strchr(delims, word_start[-1]))
814 break;
815 space_left = inputline_size - (word_start - inputline) - 1;
816 numitems = tsearch(word_start, command, space_left);
817
818 if (command == RECOGNIZE) {
819 /* print from str_end on */
820 print_recognized_stuff(str_end);
821 if (numitems != 1) /* Beep = No match/ambiguous */
822 beep();
823 }
824
825 /*
826 * Tabs in the input line cause trouble after a pushback. tty driver
827 * won't backspace over them because column positions are now
828 * incorrect. This is solved by retyping over current line.
829 */
830 should_retype = FALSE;
831 if (Strchr(inputline, '\t')) { /* tab Char in input line? */
832 back_to_col_1();
833 should_retype = TRUE;
834 }
835 if (command == LIST) /* Always retype after a LIST */
836 should_retype = TRUE;
837 if (should_retype)
838 printprompt(0, NULL);
839 pushback(inputline);
840 if (should_retype)
841 retype();
842 }
843 setup_tty(OFF);
844 return (num_read);
845}
846
847static int
848ignored(item)
849 Char *item;
850{
851 struct varent *vp;
852 Char **cp;
853
854 if ((vp = adrof(STRfignore)) == NULL || (cp = vp->vec) == NULL)
855 return (FALSE);
856 for (; *cp != NULL; cp++)
857 if (is_suffix(item, *cp))
858 return (TRUE);
859 return (FALSE);
860}
861#endif /* FILEC && TIOCSTI */
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