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[git/git.git] / builtin / ls-files.c
1 /*
2 * This merges the file listing in the directory cache index
3 * with the actual working directory list, and shows different
4 * combinations of the two.
5 *
6 * Copyright (C) Linus Torvalds, 2005
7 */
8 #include "cache.h"
9 #include "quote.h"
10 #include "dir.h"
11 #include "builtin.h"
12 #include "tree.h"
13 #include "parse-options.h"
14 #include "resolve-undo.h"
15 #include "string-list.h"
16
17 static int abbrev;
18 static int show_deleted;
19 static int show_cached;
20 static int show_others;
21 static int show_stage;
22 static int show_unmerged;
23 static int show_resolve_undo;
24 static int show_modified;
25 static int show_killed;
26 static int show_valid_bit;
27 static int line_terminator = '\n';
28
29 static int prefix_len;
30 static int prefix_offset;
31 static const char **pathspec;
32 static int error_unmatch;
33 static char *ps_matched;
34 static const char *with_tree;
35 static int exc_given;
36
37 static const char *tag_cached = "";
38 static const char *tag_unmerged = "";
39 static const char *tag_removed = "";
40 static const char *tag_other = "";
41 static const char *tag_killed = "";
42 static const char *tag_modified = "";
43 static const char *tag_skip_worktree = "";
44 static const char *tag_resolve_undo = "";
45
46 static void show_dir_entry(const char *tag, struct dir_entry *ent)
47 {
48 int len = prefix_len;
49 int offset = prefix_offset;
50
51 if (len >= ent->len)
52 die("git ls-files: internal error - directory entry not superset of prefix");
53
54 if (!match_pathspec(pathspec, ent->name, ent->len, len, ps_matched))
55 return;
56
57 fputs(tag, stdout);
58 write_name_quoted(ent->name + offset, stdout, line_terminator);
59 }
60
61 static void show_other_files(struct dir_struct *dir)
62 {
63 int i;
64
65 for (i = 0; i < dir->nr; i++) {
66 struct dir_entry *ent = dir->entries[i];
67 if (!cache_name_is_other(ent->name, ent->len))
68 continue;
69 show_dir_entry(tag_other, ent);
70 }
71 }
72
73 static void show_killed_files(struct dir_struct *dir)
74 {
75 int i;
76 for (i = 0; i < dir->nr; i++) {
77 struct dir_entry *ent = dir->entries[i];
78 char *cp, *sp;
79 int pos, len, killed = 0;
80
81 for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
82 sp = strchr(cp, '/');
83 if (!sp) {
84 /* If ent->name is prefix of an entry in the
85 * cache, it will be killed.
86 */
87 pos = cache_name_pos(ent->name, ent->len);
88 if (0 <= pos)
89 die("bug in show-killed-files");
90 pos = -pos - 1;
91 while (pos < active_nr &&
92 ce_stage(active_cache[pos]))
93 pos++; /* skip unmerged */
94 if (active_nr <= pos)
95 break;
96 /* pos points at a name immediately after
97 * ent->name in the cache. Does it expect
98 * ent->name to be a directory?
99 */
100 len = ce_namelen(active_cache[pos]);
101 if ((ent->len < len) &&
102 !strncmp(active_cache[pos]->name,
103 ent->name, ent->len) &&
104 active_cache[pos]->name[ent->len] == '/')
105 killed = 1;
106 break;
107 }
108 if (0 <= cache_name_pos(ent->name, sp - ent->name)) {
109 /* If any of the leading directories in
110 * ent->name is registered in the cache,
111 * ent->name will be killed.
112 */
113 killed = 1;
114 break;
115 }
116 }
117 if (killed)
118 show_dir_entry(tag_killed, dir->entries[i]);
119 }
120 }
121
122 static void show_ce_entry(const char *tag, struct cache_entry *ce)
123 {
124 int len = prefix_len;
125 int offset = prefix_offset;
126
127 if (len >= ce_namelen(ce))
128 die("git ls-files: internal error - cache entry not superset of prefix");
129
130 if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), len, ps_matched))
131 return;
132
133 if (tag && *tag && show_valid_bit &&
134 (ce->ce_flags & CE_VALID)) {
135 static char alttag[4];
136 memcpy(alttag, tag, 3);
137 if (isalpha(tag[0]))
138 alttag[0] = tolower(tag[0]);
139 else if (tag[0] == '?')
140 alttag[0] = '!';
141 else {
142 alttag[0] = 'v';
143 alttag[1] = tag[0];
144 alttag[2] = ' ';
145 alttag[3] = 0;
146 }
147 tag = alttag;
148 }
149
150 if (!show_stage) {
151 fputs(tag, stdout);
152 } else {
153 printf("%s%06o %s %d\t",
154 tag,
155 ce->ce_mode,
156 find_unique_abbrev(ce->sha1,abbrev),
157 ce_stage(ce));
158 }
159 write_name_quoted(ce->name + offset, stdout, line_terminator);
160 }
161
162 static int show_one_ru(struct string_list_item *item, void *cbdata)
163 {
164 int offset = prefix_offset;
165 const char *path = item->string;
166 struct resolve_undo_info *ui = item->util;
167 int i, len;
168
169 len = strlen(path);
170 if (len < prefix_len)
171 return 0; /* outside of the prefix */
172 if (!match_pathspec(pathspec, path, len, prefix_len, ps_matched))
173 return 0; /* uninterested */
174 for (i = 0; i < 3; i++) {
175 if (!ui->mode[i])
176 continue;
177 printf("%s%06o %s %d\t", tag_resolve_undo, ui->mode[i],
178 find_unique_abbrev(ui->sha1[i], abbrev),
179 i + 1);
180 write_name_quoted(path + offset, stdout, line_terminator);
181 }
182 return 0;
183 }
184
185 static void show_ru_info(const char *prefix)
186 {
187 if (!the_index.resolve_undo)
188 return;
189 for_each_string_list(show_one_ru, the_index.resolve_undo, NULL);
190 }
191
192 static void show_files(struct dir_struct *dir, const char *prefix)
193 {
194 int i;
195
196 /* For cached/deleted files we don't need to even do the readdir */
197 if (show_others || show_killed) {
198 fill_directory(dir, pathspec);
199 if (show_others)
200 show_other_files(dir);
201 if (show_killed)
202 show_killed_files(dir);
203 }
204 if (show_cached | show_stage) {
205 for (i = 0; i < active_nr; i++) {
206 struct cache_entry *ce = active_cache[i];
207 int dtype = ce_to_dtype(ce);
208 if (dir->flags & DIR_SHOW_IGNORED &&
209 !excluded(dir, ce->name, &dtype))
210 continue;
211 if (show_unmerged && !ce_stage(ce))
212 continue;
213 if (ce->ce_flags & CE_UPDATE)
214 continue;
215 show_ce_entry(ce_stage(ce) ? tag_unmerged :
216 (ce_skip_worktree(ce) ? tag_skip_worktree : tag_cached), ce);
217 }
218 }
219 if (show_deleted | show_modified) {
220 for (i = 0; i < active_nr; i++) {
221 struct cache_entry *ce = active_cache[i];
222 struct stat st;
223 int err;
224 int dtype = ce_to_dtype(ce);
225 if (dir->flags & DIR_SHOW_IGNORED &&
226 !excluded(dir, ce->name, &dtype))
227 continue;
228 if (ce->ce_flags & CE_UPDATE)
229 continue;
230 if (ce_skip_worktree(ce))
231 continue;
232 err = lstat(ce->name, &st);
233 if (show_deleted && err)
234 show_ce_entry(tag_removed, ce);
235 if (show_modified && ce_modified(ce, &st, 0))
236 show_ce_entry(tag_modified, ce);
237 }
238 }
239 }
240
241 /*
242 * Prune the index to only contain stuff starting with "prefix"
243 */
244 static void prune_cache(const char *prefix)
245 {
246 int pos = cache_name_pos(prefix, prefix_len);
247 unsigned int first, last;
248
249 if (pos < 0)
250 pos = -pos-1;
251 memmove(active_cache, active_cache + pos,
252 (active_nr - pos) * sizeof(struct cache_entry *));
253 active_nr -= pos;
254 first = 0;
255 last = active_nr;
256 while (last > first) {
257 int next = (last + first) >> 1;
258 struct cache_entry *ce = active_cache[next];
259 if (!strncmp(ce->name, prefix, prefix_len)) {
260 first = next+1;
261 continue;
262 }
263 last = next;
264 }
265 active_nr = last;
266 }
267
268 static const char *verify_pathspec(const char *prefix)
269 {
270 const char **p, *n, *prev;
271 unsigned long max;
272
273 prev = NULL;
274 max = PATH_MAX;
275 for (p = pathspec; (n = *p) != NULL; p++) {
276 int i, len = 0;
277 for (i = 0; i < max; i++) {
278 char c = n[i];
279 if (prev && prev[i] != c)
280 break;
281 if (!c || c == '*' || c == '?')
282 break;
283 if (c == '/')
284 len = i+1;
285 }
286 prev = n;
287 if (len < max) {
288 max = len;
289 if (!max)
290 break;
291 }
292 }
293
294 if (prefix_offset > max || memcmp(prev, prefix, prefix_offset))
295 die("git ls-files: cannot generate relative filenames containing '..'");
296
297 prefix_len = max;
298 return max ? xmemdupz(prev, max) : NULL;
299 }
300
301 static void strip_trailing_slash_from_submodules(void)
302 {
303 const char **p;
304
305 for (p = pathspec; *p != NULL; p++) {
306 int len = strlen(*p), pos;
307
308 if (len < 1 || (*p)[len - 1] != '/')
309 continue;
310 pos = cache_name_pos(*p, len - 1);
311 if (pos >= 0 && S_ISGITLINK(active_cache[pos]->ce_mode))
312 *p = xstrndup(*p, len - 1);
313 }
314 }
315
316 /*
317 * Read the tree specified with --with-tree option
318 * (typically, HEAD) into stage #1 and then
319 * squash them down to stage #0. This is used for
320 * --error-unmatch to list and check the path patterns
321 * that were given from the command line. We are not
322 * going to write this index out.
323 */
324 void overlay_tree_on_cache(const char *tree_name, const char *prefix)
325 {
326 struct tree *tree;
327 unsigned char sha1[20];
328 const char **match;
329 struct cache_entry *last_stage0 = NULL;
330 int i;
331
332 if (get_sha1(tree_name, sha1))
333 die("tree-ish %s not found.", tree_name);
334 tree = parse_tree_indirect(sha1);
335 if (!tree)
336 die("bad tree-ish %s", tree_name);
337
338 /* Hoist the unmerged entries up to stage #3 to make room */
339 for (i = 0; i < active_nr; i++) {
340 struct cache_entry *ce = active_cache[i];
341 if (!ce_stage(ce))
342 continue;
343 ce->ce_flags |= CE_STAGEMASK;
344 }
345
346 if (prefix) {
347 static const char *(matchbuf[2]);
348 matchbuf[0] = prefix;
349 matchbuf[1] = NULL;
350 match = matchbuf;
351 } else
352 match = NULL;
353 if (read_tree(tree, 1, match))
354 die("unable to read tree entries %s", tree_name);
355
356 for (i = 0; i < active_nr; i++) {
357 struct cache_entry *ce = active_cache[i];
358 switch (ce_stage(ce)) {
359 case 0:
360 last_stage0 = ce;
361 /* fallthru */
362 default:
363 continue;
364 case 1:
365 /*
366 * If there is stage #0 entry for this, we do not
367 * need to show it. We use CE_UPDATE bit to mark
368 * such an entry.
369 */
370 if (last_stage0 &&
371 !strcmp(last_stage0->name, ce->name))
372 ce->ce_flags |= CE_UPDATE;
373 }
374 }
375 }
376
377 int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset)
378 {
379 /*
380 * Make sure all pathspec matched; otherwise it is an error.
381 */
382 int num, errors = 0;
383 for (num = 0; pathspec[num]; num++) {
384 int other, found_dup;
385
386 if (ps_matched[num])
387 continue;
388 /*
389 * The caller might have fed identical pathspec
390 * twice. Do not barf on such a mistake.
391 */
392 for (found_dup = other = 0;
393 !found_dup && pathspec[other];
394 other++) {
395 if (other == num || !ps_matched[other])
396 continue;
397 if (!strcmp(pathspec[other], pathspec[num]))
398 /*
399 * Ok, we have a match already.
400 */
401 found_dup = 1;
402 }
403 if (found_dup)
404 continue;
405
406 error("pathspec '%s' did not match any file(s) known to git.",
407 pathspec[num] + prefix_offset);
408 errors++;
409 }
410 return errors;
411 }
412
413 static const char * const ls_files_usage[] = {
414 "git ls-files [options] [<file>]*",
415 NULL
416 };
417
418 static int option_parse_z(const struct option *opt,
419 const char *arg, int unset)
420 {
421 line_terminator = unset ? '\n' : '\0';
422
423 return 0;
424 }
425
426 static int option_parse_exclude(const struct option *opt,
427 const char *arg, int unset)
428 {
429 struct exclude_list *list = opt->value;
430
431 exc_given = 1;
432 add_exclude(arg, "", 0, list);
433
434 return 0;
435 }
436
437 static int option_parse_exclude_from(const struct option *opt,
438 const char *arg, int unset)
439 {
440 struct dir_struct *dir = opt->value;
441
442 exc_given = 1;
443 add_excludes_from_file(dir, arg);
444
445 return 0;
446 }
447
448 static int option_parse_exclude_standard(const struct option *opt,
449 const char *arg, int unset)
450 {
451 struct dir_struct *dir = opt->value;
452
453 exc_given = 1;
454 setup_standard_excludes(dir);
455
456 return 0;
457 }
458
459 int cmd_ls_files(int argc, const char **argv, const char *prefix)
460 {
461 int require_work_tree = 0, show_tag = 0;
462 struct dir_struct dir;
463 struct option builtin_ls_files_options[] = {
464 { OPTION_CALLBACK, 'z', NULL, NULL, NULL,
465 "paths are separated with NUL character",
466 PARSE_OPT_NOARG, option_parse_z },
467 OPT_BOOLEAN('t', NULL, &show_tag,
468 "identify the file status with tags"),
469 OPT_BOOLEAN('v', NULL, &show_valid_bit,
470 "use lowercase letters for 'assume unchanged' files"),
471 OPT_BOOLEAN('c', "cached", &show_cached,
472 "show cached files in the output (default)"),
473 OPT_BOOLEAN('d', "deleted", &show_deleted,
474 "show deleted files in the output"),
475 OPT_BOOLEAN('m', "modified", &show_modified,
476 "show modified files in the output"),
477 OPT_BOOLEAN('o', "others", &show_others,
478 "show other files in the output"),
479 OPT_BIT('i', "ignored", &dir.flags,
480 "show ignored files in the output",
481 DIR_SHOW_IGNORED),
482 OPT_BOOLEAN('s', "stage", &show_stage,
483 "show staged contents' object name in the output"),
484 OPT_BOOLEAN('k', "killed", &show_killed,
485 "show files on the filesystem that need to be removed"),
486 OPT_BIT(0, "directory", &dir.flags,
487 "show 'other' directories' name only",
488 DIR_SHOW_OTHER_DIRECTORIES),
489 OPT_NEGBIT(0, "empty-directory", &dir.flags,
490 "don't show empty directories",
491 DIR_HIDE_EMPTY_DIRECTORIES),
492 OPT_BOOLEAN('u', "unmerged", &show_unmerged,
493 "show unmerged files in the output"),
494 OPT_BOOLEAN(0, "resolve-undo", &show_resolve_undo,
495 "show resolve-undo information"),
496 { OPTION_CALLBACK, 'x', "exclude", &dir.exclude_list[EXC_CMDL], "pattern",
497 "skip files matching pattern",
498 0, option_parse_exclude },
499 { OPTION_CALLBACK, 'X', "exclude-from", &dir, "file",
500 "exclude patterns are read from <file>",
501 0, option_parse_exclude_from },
502 OPT_STRING(0, "exclude-per-directory", &dir.exclude_per_dir, "file",
503 "read additional per-directory exclude patterns in <file>"),
504 { OPTION_CALLBACK, 0, "exclude-standard", &dir, NULL,
505 "add the standard git exclusions",
506 PARSE_OPT_NOARG, option_parse_exclude_standard },
507 { OPTION_SET_INT, 0, "full-name", &prefix_offset, NULL,
508 "make the output relative to the project top directory",
509 PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL },
510 OPT_BOOLEAN(0, "error-unmatch", &error_unmatch,
511 "if any <file> is not in the index, treat this as an error"),
512 OPT_STRING(0, "with-tree", &with_tree, "tree-ish",
513 "pretend that paths removed since <tree-ish> are still present"),
514 OPT__ABBREV(&abbrev),
515 OPT_END()
516 };
517
518 memset(&dir, 0, sizeof(dir));
519 if (prefix)
520 prefix_offset = strlen(prefix);
521 git_config(git_default_config, NULL);
522
523 if (read_cache() < 0)
524 die("index file corrupt");
525
526 argc = parse_options(argc, argv, prefix, builtin_ls_files_options,
527 ls_files_usage, 0);
528 if (show_tag || show_valid_bit) {
529 tag_cached = "H ";
530 tag_unmerged = "M ";
531 tag_removed = "R ";
532 tag_modified = "C ";
533 tag_other = "? ";
534 tag_killed = "K ";
535 tag_skip_worktree = "S ";
536 tag_resolve_undo = "U ";
537 }
538 if (show_modified || show_others || show_deleted || (dir.flags & DIR_SHOW_IGNORED) || show_killed)
539 require_work_tree = 1;
540 if (show_unmerged)
541 /*
542 * There's no point in showing unmerged unless
543 * you also show the stage information.
544 */
545 show_stage = 1;
546 if (dir.exclude_per_dir)
547 exc_given = 1;
548
549 if (require_work_tree && !is_inside_work_tree())
550 setup_work_tree();
551
552 pathspec = get_pathspec(prefix, argv);
553
554 /* be nice with submodule paths ending in a slash */
555 if (pathspec)
556 strip_trailing_slash_from_submodules();
557
558 /* Verify that the pathspec matches the prefix */
559 if (pathspec)
560 prefix = verify_pathspec(prefix);
561
562 /* Treat unmatching pathspec elements as errors */
563 if (pathspec && error_unmatch) {
564 int num;
565 for (num = 0; pathspec[num]; num++)
566 ;
567 ps_matched = xcalloc(1, num);
568 }
569
570 if ((dir.flags & DIR_SHOW_IGNORED) && !exc_given)
571 die("ls-files --ignored needs some exclude pattern");
572
573 /* With no flags, we default to showing the cached files */
574 if (!(show_stage | show_deleted | show_others | show_unmerged |
575 show_killed | show_modified | show_resolve_undo))
576 show_cached = 1;
577
578 if (prefix)
579 prune_cache(prefix);
580 if (with_tree) {
581 /*
582 * Basic sanity check; show-stages and show-unmerged
583 * would not make any sense with this option.
584 */
585 if (show_stage || show_unmerged)
586 die("ls-files --with-tree is incompatible with -s or -u");
587 overlay_tree_on_cache(with_tree, prefix);
588 }
589 show_files(&dir, prefix);
590 if (show_resolve_undo)
591 show_ru_info(prefix);
592
593 if (ps_matched) {
594 int bad;
595 bad = report_path_error(ps_matched, pathspec, prefix_offset);
596 if (bad)
597 fprintf(stderr, "Did you forget to 'git add'?\n");
598
599 return bad ? 1 : 0;
600 }
601
602 return 0;
603 }