16a1370647fc69da357d7af9b195bb19a99c2123
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"
14static int abbrev;
16static int show_deleted;
17static int show_cached;
18static int show_others;
19static int show_stage;
20static int show_unmerged;
21static int show_modified;
22static int show_killed;
23static int show_valid_bit;
24static int line_terminator = '\n';
25static int prefix_len;
27static int prefix_offset;
28static const char **pathspec;
29static int error_unmatch;
30static char *ps_matched;
31static const char *with_tree;
32static int exc_given;
33static const char *tag_cached = "";
35static const char *tag_unmerged = "";
36static const char *tag_removed = "";
37static const char *tag_other = "";
38static const char *tag_killed = "";
39static const char *tag_modified = "";
40static void show_dir_entry(const char *tag, struct dir_entry *ent)
42{
43 int len = prefix_len;
44 int offset = prefix_offset;
45 if (len >= ent->len)
47 die("git ls-files: internal error - directory entry not superset of prefix");
48 if (!match_pathspec(pathspec, ent->name, ent->len, len, ps_matched))
50 return;
51 fputs(tag, stdout);
53 write_name_quoted(ent->name + offset, stdout, line_terminator);
54}
55static void show_other_files(struct dir_struct *dir)
57{
58 int i;
59 for (i = 0; i < dir->nr; i++) {
61 struct dir_entry *ent = dir->entries[i];
62 if (!cache_name_is_other(ent->name, ent->len))
63 continue;
64 show_dir_entry(tag_other, ent);
65 }
66}
67static void show_killed_files(struct dir_struct *dir)
69{
70 int i;
71 for (i = 0; i < dir->nr; i++) {
72 struct dir_entry *ent = dir->entries[i];
73 char *cp, *sp;
74 int pos, len, killed = 0;
75 for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
77 sp = strchr(cp, '/');
78 if (!sp) {
79 /* If ent->name is prefix of an entry in the
80 * cache, it will be killed.
81 */
82 pos = cache_name_pos(ent->name, ent->len);
83 if (0 <= pos)
84 die("bug in show-killed-files");
85 pos = -pos - 1;
86 while (pos < active_nr &&
87 ce_stage(active_cache[pos]))
88 pos++; /* skip unmerged */
89 if (active_nr <= pos)
90 break;
91 /* pos points at a name immediately after
92 * ent->name in the cache. Does it expect
93 * ent->name to be a directory?
94 */
95 len = ce_namelen(active_cache[pos]);
96 if ((ent->len < len) &&
97 !strncmp(active_cache[pos]->name,
98 ent->name, ent->len) &&
99 active_cache[pos]->name[ent->len] == '/')
100 killed = 1;
101 break;
102 }
103 if (0 <= cache_name_pos(ent->name, sp - ent->name)) {
104 /* If any of the leading directories in
105 * ent->name is registered in the cache,
106 * ent->name will be killed.
107 */
108 killed = 1;
109 break;
110 }
111 }
112 if (killed)
113 show_dir_entry(tag_killed, dir->entries[i]);
114 }
115}
116static void show_ce_entry(const char *tag, struct cache_entry *ce)
118{
119 int len = prefix_len;
120 int offset = prefix_offset;
121 if (len >= ce_namelen(ce))
123 die("git ls-files: internal error - cache entry not superset of prefix");
124 if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), len, ps_matched))
126 return;
127 if (tag && *tag && show_valid_bit &&
129 (ce->ce_flags & CE_VALID)) {
130 static char alttag[4];
131 memcpy(alttag, tag, 3);
132 if (isalpha(tag[0]))
133 alttag[0] = tolower(tag[0]);
134 else if (tag[0] == '?')
135 alttag[0] = '!';
136 else {
137 alttag[0] = 'v';
138 alttag[1] = tag[0];
139 alttag[2] = ' ';
140 alttag[3] = 0;
141 }
142 tag = alttag;
143 }
144 if (!show_stage) {
146 fputs(tag, stdout);
147 } else {
148 printf("%s%06o %s %d\t",
149 tag,
150 ce->ce_mode,
151 abbrev ? find_unique_abbrev(ce->sha1,abbrev)
152 : sha1_to_hex(ce->sha1),
153 ce_stage(ce));
154 }
155 write_name_quoted(ce->name + offset, stdout, line_terminator);
156}
157static void show_files(struct dir_struct *dir, const char *prefix)
159{
160 int i;
161 /* For cached/deleted files we don't need to even do the readdir */
163 if (show_others || show_killed) {
164 const char *path = ".", *base = "";
165 int baselen = prefix_len;
166 if (baselen)
168 path = base = prefix;
169 read_directory(dir, path, base, baselen, pathspec);
170 if (show_others)
171 show_other_files(dir);
172 if (show_killed)
173 show_killed_files(dir);
174 }
175 if (show_cached | show_stage) {
176 for (i = 0; i < active_nr; i++) {
177 struct cache_entry *ce = active_cache[i];
178 if (show_unmerged && !ce_stage(ce))
179 continue;
180 if (ce->ce_flags & CE_UPDATE)
181 continue;
182 show_ce_entry(ce_stage(ce) ? tag_unmerged : tag_cached, ce);
183 }
184 }
185 if (show_deleted | show_modified) {
186 for (i = 0; i < active_nr; i++) {
187 struct cache_entry *ce = active_cache[i];
188 struct stat st;
189 int err;
190 if (ce->ce_flags & CE_UPDATE)
191 continue;
192 err = lstat(ce->name, &st);
193 if (show_deleted && err)
194 show_ce_entry(tag_removed, ce);
195 if (show_modified && ce_modified(ce, &st, 0))
196 show_ce_entry(tag_modified, ce);
197 }
198 }
199}
200/*
202 * Prune the index to only contain stuff starting with "prefix"
203 */
204static void prune_cache(const char *prefix)
205{
206 int pos = cache_name_pos(prefix, prefix_len);
207 unsigned int first, last;
208 if (pos < 0)
210 pos = -pos-1;
211 memmove(active_cache, active_cache + pos,
212 (active_nr - pos) * sizeof(struct cache_entry *));
213 active_nr -= pos;
214 first = 0;
215 last = active_nr;
216 while (last > first) {
217 int next = (last + first) >> 1;
218 struct cache_entry *ce = active_cache[next];
219 if (!strncmp(ce->name, prefix, prefix_len)) {
220 first = next+1;
221 continue;
222 }
223 last = next;
224 }
225 active_nr = last;
226}
227static const char *verify_pathspec(const char *prefix)
229{
230 const char **p, *n, *prev;
231 unsigned long max;
232 prev = NULL;
234 max = PATH_MAX;
235 for (p = pathspec; (n = *p) != NULL; p++) {
236 int i, len = 0;
237 for (i = 0; i < max; i++) {
238 char c = n[i];
239 if (prev && prev[i] != c)
240 break;
241 if (!c || c == '*' || c == '?')
242 break;
243 if (c == '/')
244 len = i+1;
245 }
246 prev = n;
247 if (len < max) {
248 max = len;
249 if (!max)
250 break;
251 }
252 }
253 if (prefix_offset > max || memcmp(prev, prefix, prefix_offset))
255 die("git ls-files: cannot generate relative filenames containing '..'");
256 prefix_len = max;
258 return max ? xmemdupz(prev, max) : NULL;
259}
260static void strip_trailing_slash_from_submodules(void)
262{
263 const char **p;
264 for (p = pathspec; *p != NULL; p++) {
266 int len = strlen(*p), pos;
267 if (len < 1 || (*p)[len - 1] != '/')
269 continue;
270 pos = cache_name_pos(*p, len - 1);
271 if (pos >= 0 && S_ISGITLINK(active_cache[pos]->ce_mode))
272 *p = xstrndup(*p, len - 1);
273 }
274}
275/*
277 * Read the tree specified with --with-tree option
278 * (typically, HEAD) into stage #1 and then
279 * squash them down to stage #0. This is used for
280 * --error-unmatch to list and check the path patterns
281 * that were given from the command line. We are not
282 * going to write this index out.
283 */
284void overlay_tree_on_cache(const char *tree_name, const char *prefix)
285{
286 struct tree *tree;
287 unsigned char sha1[20];
288 const char **match;
289 struct cache_entry *last_stage0 = NULL;
290 int i;
291 if (get_sha1(tree_name, sha1))
293 die("tree-ish %s not found.", tree_name);
294 tree = parse_tree_indirect(sha1);
295 if (!tree)
296 die("bad tree-ish %s", tree_name);
297 /* Hoist the unmerged entries up to stage #3 to make room */
299 for (i = 0; i < active_nr; i++) {
300 struct cache_entry *ce = active_cache[i];
301 if (!ce_stage(ce))
302 continue;
303 ce->ce_flags |= CE_STAGEMASK;
304 }
305 if (prefix) {
307 static const char *(matchbuf[2]);
308 matchbuf[0] = prefix;
309 matchbuf[1] = NULL;
310 match = matchbuf;
311 } else
312 match = NULL;
313 if (read_tree(tree, 1, match))
314 die("unable to read tree entries %s", tree_name);
315 for (i = 0; i < active_nr; i++) {
317 struct cache_entry *ce = active_cache[i];
318 switch (ce_stage(ce)) {
319 case 0:
320 last_stage0 = ce;
321 /* fallthru */
322 default:
323 continue;
324 case 1:
325 /*
326 * If there is stage #0 entry for this, we do not
327 * need to show it. We use CE_UPDATE bit to mark
328 * such an entry.
329 */
330 if (last_stage0 &&
331 !strcmp(last_stage0->name, ce->name))
332 ce->ce_flags |= CE_UPDATE;
333 }
334 }
335}
336int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset)
338{
339 /*
340 * Make sure all pathspec matched; otherwise it is an error.
341 */
342 int num, errors = 0;
343 for (num = 0; pathspec[num]; num++) {
344 int other, found_dup;
345 if (ps_matched[num])
347 continue;
348 /*
349 * The caller might have fed identical pathspec
350 * twice. Do not barf on such a mistake.
351 */
352 for (found_dup = other = 0;
353 !found_dup && pathspec[other];
354 other++) {
355 if (other == num || !ps_matched[other])
356 continue;
357 if (!strcmp(pathspec[other], pathspec[num]))
358 /*
359 * Ok, we have a match already.
360 */
361 found_dup = 1;
362 }
363 if (found_dup)
364 continue;
365 error("pathspec '%s' did not match any file(s) known to git.",
367 pathspec[num] + prefix_offset);
368 errors++;
369 }
370 return errors;
371}
372static const char * const ls_files_usage[] = {
374 "git ls-files [options] [<file>]*",
375 NULL
376};
377static int option_parse_z(const struct option *opt,
379 const char *arg, int unset)
380{
381 line_terminator = unset ? '\n' : '\0';
382 return 0;
384}
385static int option_parse_exclude(const struct option *opt,
387 const char *arg, int unset)
388{
389 struct exclude_list *list = opt->value;
390 exc_given = 1;
392 add_exclude(arg, "", 0, list);
393 return 0;
395}
396static int option_parse_exclude_from(const struct option *opt,
398 const char *arg, int unset)
399{
400 struct dir_struct *dir = opt->value;
401 exc_given = 1;
403 add_excludes_from_file(dir, arg);
404 return 0;
406}
407static int option_parse_exclude_standard(const struct option *opt,
409 const char *arg, int unset)
410{
411 struct dir_struct *dir = opt->value;
412 exc_given = 1;
414 setup_standard_excludes(dir);
415 return 0;
417}
418int cmd_ls_files(int argc, const char **argv, const char *prefix)
420{
421 int require_work_tree = 0, show_tag = 0;
422 struct dir_struct dir;
423 struct option builtin_ls_files_options[] = {
424 { OPTION_CALLBACK, 'z', NULL, NULL, NULL,
425 "paths are separated with NUL character",
426 PARSE_OPT_NOARG, option_parse_z },
427 OPT_BOOLEAN('t', NULL, &show_tag,
428 "identify the file status with tags"),
429 OPT_BOOLEAN('v', NULL, &show_valid_bit,
430 "use lowercase letters for 'assume unchanged' files"),
431 OPT_BOOLEAN('c', "cached", &show_cached,
432 "show cached files in the output (default)"),
433 OPT_BOOLEAN('d', "deleted", &show_deleted,
434 "show deleted files in the output"),
435 OPT_BOOLEAN('m', "modified", &show_modified,
436 "show modified files in the output"),
437 OPT_BOOLEAN('o', "others", &show_others,
438 "show other files in the output"),
439 OPT_BIT('i', "ignored", &dir.flags,
440 "show ignored files in the output",
441 DIR_SHOW_IGNORED),
442 OPT_BOOLEAN('s', "stage", &show_stage,
443 "show staged contents' object name in the output"),
444 OPT_BOOLEAN('k', "killed", &show_killed,
445 "show files on the filesystem that need to be removed"),
446 OPT_BIT(0, "directory", &dir.flags,
447 "show 'other' directories' name only",
448 DIR_SHOW_OTHER_DIRECTORIES),
449 OPT_BIT(0, "no-empty-directory", &dir.flags,
450 "don't show empty directories",
451 DIR_HIDE_EMPTY_DIRECTORIES),
452 OPT_BOOLEAN('u', "unmerged", &show_unmerged,
453 "show unmerged files in the output"),
454 { OPTION_CALLBACK, 'x', "exclude", &dir.exclude_list[EXC_CMDL], "pattern",
455 "skip files matching pattern",
456 0, option_parse_exclude },
457 { OPTION_CALLBACK, 'X', "exclude-from", &dir, "file",
458 "exclude patterns are read from <file>",
459 0, option_parse_exclude_from },
460 OPT_STRING(0, "exclude-per-directory", &dir.exclude_per_dir, "file",
461 "read additional per-directory exclude patterns in <file>"),
462 { OPTION_CALLBACK, 0, "exclude-standard", &dir, NULL,
463 "add the standard git exclusions",
464 PARSE_OPT_NOARG, option_parse_exclude_standard },
465 { OPTION_SET_INT, 0, "full-name", &prefix_offset, NULL,
466 "make the output relative to the project top directory",
467 PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL },
468 OPT_BOOLEAN(0, "error-unmatch", &error_unmatch,
469 "if any <file> is not in the index, treat this as an error"),
470 OPT_STRING(0, "with-tree", &with_tree, "tree-ish",
471 "pretend that paths removed since <tree-ish> are still present"),
472 OPT__ABBREV(&abbrev),
473 OPT_END()
474 };
475 memset(&dir, 0, sizeof(dir));
477 if (prefix)
478 prefix_offset = strlen(prefix);
479 git_config(git_default_config, NULL);
480 argc = parse_options(argc, argv, builtin_ls_files_options,
482 ls_files_usage, 0);
483 if (show_tag || show_valid_bit) {
484 tag_cached = "H ";
485 tag_unmerged = "M ";
486 tag_removed = "R ";
487 tag_modified = "C ";
488 tag_other = "? ";
489 tag_killed = "K ";
490 }
491 if (show_modified || show_others || show_deleted || (dir.flags & DIR_SHOW_IGNORED) || show_killed)
492 require_work_tree = 1;
493 if (show_unmerged)
494 /*
495 * There's no point in showing unmerged unless
496 * you also show the stage information.
497 */
498 show_stage = 1;
499 if (dir.exclude_per_dir)
500 exc_given = 1;
501 if (require_work_tree && !is_inside_work_tree())
503 setup_work_tree();
504 pathspec = get_pathspec(prefix, argv);
506 /* be nice with submodule paths ending in a slash */
508 read_cache();
509 if (pathspec)
510 strip_trailing_slash_from_submodules();
511 /* Verify that the pathspec matches the prefix */
513 if (pathspec)
514 prefix = verify_pathspec(prefix);
515 /* Treat unmatching pathspec elements as errors */
517 if (pathspec && error_unmatch) {
518 int num;
519 for (num = 0; pathspec[num]; num++)
520 ;
521 ps_matched = xcalloc(1, num);
522 }
523 if ((dir.flags & DIR_SHOW_IGNORED) && !exc_given) {
525 fprintf(stderr, "%s: --ignored needs some exclude pattern\n",
526 argv[0]);
527 exit(1);
528 }
529 /* With no flags, we default to showing the cached files */
531 if (!(show_stage | show_deleted | show_others | show_unmerged |
532 show_killed | show_modified))
533 show_cached = 1;
534 if (prefix)
536 prune_cache(prefix);
537 if (with_tree) {
538 /*
539 * Basic sanity check; show-stages and show-unmerged
540 * would not make any sense with this option.
541 */
542 if (show_stage || show_unmerged)
543 die("ls-files --with-tree is incompatible with -s or -u");
544 overlay_tree_on_cache(with_tree, prefix);
545 }
546 show_files(&dir, prefix);
547 if (ps_matched) {
549 int bad;
550 bad = report_path_error(ps_matched, pathspec, prefix_offset);
551 if (bad)
552 fprintf(stderr, "Did you forget to 'git add'?\n");
553 return bad ? 1 : 0;
555 }
556 return 0;
558}