1/* $Header: /src/pub/tcsh/sh.file.c,v 3.23 2003/02/08 20:03:26 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

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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 $")
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.

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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));
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));
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;
90
91static void
92setup_tty(on)
93 int on;
94{
95#ifdef TERMIO
96# ifdef POSIX
97 struct termios tchars;

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221/*
222 * Push string contents back into tty queue
223 */
224static void
225pushback(string)
226 Char *string;
227{
228 Char *p;
229 char c;
230#ifdef TERMIO
231# ifdef POSIX
232 struct termios tty, tty_normal;
233# else
234 struct termio tty, tty_normal;
235# endif /* POSIX */
236#else
237 struct sgttyb tty, tty_normal;

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252 tty_normal = tty;
253 tty.c_lflag &= ~(ECHOKE | ECHO | ECHOE | ECHOK | ECHONL | ECHOPRT | ECHOCTL);
254# ifdef POSIX
255 (void) tcsetattr(SHOUT, TCSANOW, &tty);
256# else
257 (void) ioctl(SHOUT, TCSETAW, (ioctl_t) &tty);
258# endif /* POSIX */
259
260 for (p = string; (c = *p) != '\0'; p++)
261 (void) ioctl(SHOUT, TIOCSTI, (ioctl_t) & c);
262# ifdef POSIX
263 (void) tcsetattr(SHOUT, TCSANOW, &tty_normal);
264# else
265 (void) ioctl(SHOUT, TCSETAW, (ioctl_t) &tty_normal);
266# endif /* POSIX */
267#else
268 (void) ioctl(SHOUT, TIOCGETP, (ioctl_t) & tty);
269 tty_normal = tty;

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310 int count;
311{
312 while (--count >= 0)
313 if ((*des++ = *src++) == 0)
314 return;
315 *des = '\0';
316}
317
318static Char
319filetype(dir, file)
320 Char *dir, *file;
321{
322 Char path[MAXPATHLEN];
323 struct stat statb;
324
325 catn(Strcpy(path, dir), file, sizeof(path) / sizeof(Char));
326 if (lstat(short2str(path), &statb) == 0) {

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349static struct winsize win;
350
351/*
352 * Print sorted down columns
353 */
354static void
355print_by_column(dir, items, count)
356 Char *dir, *items[];
357 int count;
358{
359 int i, rows, r, c, maxwidth = 0, columns;
360
361 if (ioctl(SHOUT, TIOCGWINSZ, (ioctl_t) & win) < 0 || win.ws_col == 0)
362 win.ws_col = 80;
363 for (i = 0; i < count; i++)
364 maxwidth = maxwidth > (r = Strlen(items[i])) ? maxwidth : r;
365 maxwidth += 2; /* for the file tag and space */
366 columns = win.ws_col / maxwidth;
367 if (columns == 0)

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511 copyn(name, path, MAXNAMLEN);
512 dir[0] = '\0';
513 }
514 else {
515 copyn(name, ++p, MAXNAMLEN);
516 copyn(dir, path, p - path);
517 }
518}
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 */
524static Char *
525getitem(dir_fd, looking_for_lognames)
526 DIR *dir_fd;
527 int looking_for_lognames;
528{
529 struct passwd *pw;
530 struct dirent *dirp;
531
532 if (looking_for_lognames) {
533#ifdef _VMS_POSIX
534 return (NULL);
535#else
536 if ((pw = getpwent()) == NULL)
537 return (NULL);
538 return (str2short(pw->pw_name));
539#endif /* atp vmsposix */
540 }
541 if ((dirp = readdir(dir_fd)) != NULL)

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576 */
577static int
578tsearch(word, command, max_word_length)
579 Char *word;
580 int max_word_length;
581 COMMAND command;
582{
583 DIR *dir_fd;
584 int numitems = 0, ignoring = TRUE, nignored = 0;
585 int name_length, looking_for_lognames;
586 Char tilded_dir[MAXPATHLEN + 1], dir[MAXPATHLEN + 1];
587 Char name[MAXNAMLEN + 1], extended_name[MAXNAMLEN + 1];
588 Char *item;
589 Char **items = NULL;
590 size_t maxitems = 0;
591
592 looking_for_lognames = (*word == '~') && (Strchr(word, '/') == NULL);
593 if (looking_for_lognames) {
594#ifndef _VMS_POSIX
595 (void) setpwent();
596#endif /*atp vmsposix */
597 copyn(name, &word[1], MAXNAMLEN); /* name sans ~ */
598 dir_fd = NULL;
599 }
600 else {
601 extract_dir_and_name(word, dir, name);
602 if (tilde(tilded_dir, dir) == 0)
603 return (0);
604 dir_fd = opendir(*tilded_dir ? short2str(tilded_dir) : ".");

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636 else if (recognize(extended_name,
637 item, name_length, ++numitems))
638 break;
639 }
640 }
641 if (ignoring && numitems == 0 && nignored > 0) {
642 ignoring = FALSE;
643 nignored = 0;
644 if (looking_for_lognames)
645#ifndef _VMS_POSIX
646 (void) setpwent();
647#endif /* atp vmsposix */
648 else
649 rewinddir(dir_fd);
650 goto again;
651 }
652
653 if (looking_for_lognames)
654#ifndef _VMS_POSIX
655 (void) endpwent();
656#endif /*atp vmsposix */
657 else
658 (void) closedir(dir_fd);
659 if (numitems == 0)
660 return (0);
661 if (command == RECOGNIZE) {
662 if (looking_for_lognames)
663 copyn(word, STRtilde, 1);
664 else
665 /* put back dir part */
666 copyn(word, dir, max_word_length);
667 /* add extended name */
668 catn(word, extended_name, max_word_length);
669 return (numitems);
670 }
671 else { /* LIST */
672 qsort((ptr_t) items, (size_t) numitems, sizeof(items[0]),
673 (int (*) __P((const void *, const void *))) compare);
674 print_by_column(looking_for_lognames ? NULL : tilded_dir,
675 items, numitems);
676 if (items != NULL)
677 FREE_ITEMS(items, numitems);
678 }
679 return (0);
680}
681
682
683static int
684compare(p, q)
685 const ptr_t p, q;
686{
687#if defined(NLS) && !defined(NOSTRCOLL)
688 errno = 0; /* strcoll sets errno, another brain-damage */
689
690 return (strcoll(*(char **) p, *(char **) q));
691#else
692 return (strcmp(*(char **) p, *(char **) q));
693#endif /* NLS && !NOSTRCOLL */
694}
695
696/*
697 * Object: extend what user typed up to an ambiguity.
698 * Algorithm:
699 * On first match, copy full item (assume it'll be the only match)
700 * On subsequent matches, shorten extended_name to the first
701 * Character mismatch between extended_name and item.
702 * If we shorten it back to the prefix length, stop searching.
703 */
704static int
705recognize(extended_name, item, name_length, numitems)
706 Char *extended_name, *item;
707 int name_length, numitems;
708{
709 if (numitems == 1) /* 1st match */
710 copyn(extended_name, item, MAXNAMLEN);
711 else { /* 2nd & subsequent matches */
712 Char *x, *ent;
713 int len = 0;
714
715 x = extended_name;

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758}
759
760int
761tenex(inputline, inputline_size)
762 Char *inputline;
763 int inputline_size;
764{
765 int numitems, num_read;
766 char tinputline[BUFSIZE];
767
768
769 setup_tty(ON);
770
771 while ((num_read = read(SHIN, tinputline, BUFSIZE)) > 0) {
772 int i;
773 static Char delims[] = {' ', '\'', '"', '\t', ';', '&', '<',
774 '>', '(', ')', '|', '^', '%', '\0'};
775 Char *str_end, *word_start, last_Char, should_retype;
776 int space_left;
777 COMMAND command;
778
779 for (i = 0; i < num_read; i++)
780 inputline[i] = (unsigned char) tinputline[i];
781 last_Char = inputline[num_read - 1] & ASCII;
782
783 if (last_Char == '\n' || num_read == inputline_size)
784 break;
785 command = (last_Char == ESC) ? RECOGNIZE : LIST;
786 if (command == LIST)
787 xputchar('\n');
788 str_end = &inputline[num_read];

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