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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 <fnmatch.h> | |
9 | ||
10 | #include "cache.h" | |
11 | #include "quote.h" | |
12 | #include "dir.h" | |
13 | #include "builtin.h" | |
14 | ||
15 | static int abbrev = 0; | |
16 | static int show_deleted = 0; | |
17 | static int show_cached = 0; | |
18 | static int show_others = 0; | |
19 | static int show_stage = 0; | |
20 | static int show_unmerged = 0; | |
21 | static int show_modified = 0; | |
22 | static int show_killed = 0; | |
23 | static int show_valid_bit = 0; | |
24 | static int line_terminator = '\n'; | |
25 | ||
26 | static int prefix_len = 0, prefix_offset = 0; | |
27 | static const char *prefix = NULL; | |
28 | static const char **pathspec = NULL; | |
29 | static int error_unmatch = 0; | |
30 | static char *ps_matched = NULL; | |
31 | ||
32 | static const char *tag_cached = ""; | |
33 | static const char *tag_unmerged = ""; | |
34 | static const char *tag_removed = ""; | |
35 | static const char *tag_other = ""; | |
36 | static const char *tag_killed = ""; | |
37 | static const char *tag_modified = ""; | |
38 | ||
39 | ||
40 | /* | |
41 | * Match a pathspec against a filename. The first "len" characters | |
42 | * are the common prefix | |
43 | */ | |
44 | static int match(const char **spec, char *ps_matched, | |
45 | const char *filename, int len) | |
46 | { | |
47 | const char *m; | |
48 | ||
49 | while ((m = *spec++) != NULL) { | |
50 | int matchlen = strlen(m + len); | |
51 | ||
52 | if (!matchlen) | |
53 | goto matched; | |
54 | if (!strncmp(m + len, filename + len, matchlen)) { | |
55 | if (m[len + matchlen - 1] == '/') | |
56 | goto matched; | |
57 | switch (filename[len + matchlen]) { | |
58 | case '/': case '\0': | |
59 | goto matched; | |
60 | } | |
61 | } | |
62 | if (!fnmatch(m + len, filename + len, 0)) | |
63 | goto matched; | |
64 | if (ps_matched) | |
65 | ps_matched++; | |
66 | continue; | |
67 | matched: | |
68 | if (ps_matched) | |
69 | *ps_matched = 1; | |
70 | return 1; | |
71 | } | |
72 | return 0; | |
73 | } | |
74 | ||
75 | static void show_dir_entry(const char *tag, struct dir_entry *ent) | |
76 | { | |
77 | int len = prefix_len; | |
78 | int offset = prefix_offset; | |
79 | ||
80 | if (len >= ent->len) | |
81 | die("git-ls-files: internal error - directory entry not superset of prefix"); | |
82 | ||
83 | if (pathspec && !match(pathspec, ps_matched, ent->name, len)) | |
84 | return; | |
85 | ||
86 | fputs(tag, stdout); | |
87 | write_name_quoted("", 0, ent->name + offset, line_terminator, stdout); | |
88 | putchar(line_terminator); | |
89 | } | |
90 | ||
91 | static void show_other_files(struct dir_struct *dir) | |
92 | { | |
93 | int i; | |
94 | for (i = 0; i < dir->nr; i++) { | |
95 | /* We should not have a matching entry, but we | |
96 | * may have an unmerged entry for this path. | |
97 | */ | |
98 | struct dir_entry *ent = dir->entries[i]; | |
99 | int pos = cache_name_pos(ent->name, ent->len); | |
100 | struct cache_entry *ce; | |
101 | if (0 <= pos) | |
102 | die("bug in show-other-files"); | |
103 | pos = -pos - 1; | |
104 | if (pos < active_nr) { | |
105 | ce = active_cache[pos]; | |
106 | if (ce_namelen(ce) == ent->len && | |
107 | !memcmp(ce->name, ent->name, ent->len)) | |
108 | continue; /* Yup, this one exists unmerged */ | |
109 | } | |
110 | show_dir_entry(tag_other, ent); | |
111 | } | |
112 | } | |
113 | ||
114 | static void show_killed_files(struct dir_struct *dir) | |
115 | { | |
116 | int i; | |
117 | for (i = 0; i < dir->nr; i++) { | |
118 | struct dir_entry *ent = dir->entries[i]; | |
119 | char *cp, *sp; | |
120 | int pos, len, killed = 0; | |
121 | ||
122 | for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) { | |
123 | sp = strchr(cp, '/'); | |
124 | if (!sp) { | |
125 | /* If ent->name is prefix of an entry in the | |
126 | * cache, it will be killed. | |
127 | */ | |
128 | pos = cache_name_pos(ent->name, ent->len); | |
129 | if (0 <= pos) | |
130 | die("bug in show-killed-files"); | |
131 | pos = -pos - 1; | |
132 | while (pos < active_nr && | |
133 | ce_stage(active_cache[pos])) | |
134 | pos++; /* skip unmerged */ | |
135 | if (active_nr <= pos) | |
136 | break; | |
137 | /* pos points at a name immediately after | |
138 | * ent->name in the cache. Does it expect | |
139 | * ent->name to be a directory? | |
140 | */ | |
141 | len = ce_namelen(active_cache[pos]); | |
142 | if ((ent->len < len) && | |
143 | !strncmp(active_cache[pos]->name, | |
144 | ent->name, ent->len) && | |
145 | active_cache[pos]->name[ent->len] == '/') | |
146 | killed = 1; | |
147 | break; | |
148 | } | |
149 | if (0 <= cache_name_pos(ent->name, sp - ent->name)) { | |
150 | /* If any of the leading directories in | |
151 | * ent->name is registered in the cache, | |
152 | * ent->name will be killed. | |
153 | */ | |
154 | killed = 1; | |
155 | break; | |
156 | } | |
157 | } | |
158 | if (killed) | |
159 | show_dir_entry(tag_killed, dir->entries[i]); | |
160 | } | |
161 | } | |
162 | ||
163 | static void show_ce_entry(const char *tag, struct cache_entry *ce) | |
164 | { | |
165 | int len = prefix_len; | |
166 | int offset = prefix_offset; | |
167 | ||
168 | if (len >= ce_namelen(ce)) | |
169 | die("git-ls-files: internal error - cache entry not superset of prefix"); | |
170 | ||
171 | if (pathspec && !match(pathspec, ps_matched, ce->name, len)) | |
172 | return; | |
173 | ||
174 | if (tag && *tag && show_valid_bit && | |
175 | (ce->ce_flags & htons(CE_VALID))) { | |
176 | static char alttag[4]; | |
177 | memcpy(alttag, tag, 3); | |
178 | if (isalpha(tag[0])) | |
179 | alttag[0] = tolower(tag[0]); | |
180 | else if (tag[0] == '?') | |
181 | alttag[0] = '!'; | |
182 | else { | |
183 | alttag[0] = 'v'; | |
184 | alttag[1] = tag[0]; | |
185 | alttag[2] = ' '; | |
186 | alttag[3] = 0; | |
187 | } | |
188 | tag = alttag; | |
189 | } | |
190 | ||
191 | if (!show_stage) { | |
192 | fputs(tag, stdout); | |
193 | write_name_quoted("", 0, ce->name + offset, | |
194 | line_terminator, stdout); | |
195 | putchar(line_terminator); | |
196 | } | |
197 | else { | |
198 | printf("%s%06o %s %d\t", | |
199 | tag, | |
200 | ntohl(ce->ce_mode), | |
201 | abbrev ? find_unique_abbrev(ce->sha1,abbrev) | |
202 | : sha1_to_hex(ce->sha1), | |
203 | ce_stage(ce)); | |
204 | write_name_quoted("", 0, ce->name + offset, | |
205 | line_terminator, stdout); | |
206 | putchar(line_terminator); | |
207 | } | |
208 | } | |
209 | ||
210 | static void show_files(struct dir_struct *dir) | |
211 | { | |
212 | int i; | |
213 | ||
214 | /* For cached/deleted files we don't need to even do the readdir */ | |
215 | if (show_others || show_killed) { | |
216 | const char *path = ".", *base = ""; | |
217 | int baselen = prefix_len; | |
218 | ||
219 | if (baselen) | |
220 | path = base = prefix; | |
221 | read_directory(dir, path, base, baselen); | |
222 | if (show_others) | |
223 | show_other_files(dir); | |
224 | if (show_killed) | |
225 | show_killed_files(dir); | |
226 | } | |
227 | if (show_cached | show_stage) { | |
228 | for (i = 0; i < active_nr; i++) { | |
229 | struct cache_entry *ce = active_cache[i]; | |
230 | if (excluded(dir, ce->name) != dir->show_ignored) | |
231 | continue; | |
232 | if (show_unmerged && !ce_stage(ce)) | |
233 | continue; | |
234 | show_ce_entry(ce_stage(ce) ? tag_unmerged : tag_cached, ce); | |
235 | } | |
236 | } | |
237 | if (show_deleted | show_modified) { | |
238 | for (i = 0; i < active_nr; i++) { | |
239 | struct cache_entry *ce = active_cache[i]; | |
240 | struct stat st; | |
241 | int err; | |
242 | if (excluded(dir, ce->name) != dir->show_ignored) | |
243 | continue; | |
244 | err = lstat(ce->name, &st); | |
245 | if (show_deleted && err) | |
246 | show_ce_entry(tag_removed, ce); | |
247 | if (show_modified && ce_modified(ce, &st, 0)) | |
248 | show_ce_entry(tag_modified, ce); | |
249 | } | |
250 | } | |
251 | } | |
252 | ||
253 | /* | |
254 | * Prune the index to only contain stuff starting with "prefix" | |
255 | */ | |
256 | static void prune_cache(void) | |
257 | { | |
258 | int pos = cache_name_pos(prefix, prefix_len); | |
259 | unsigned int first, last; | |
260 | ||
261 | if (pos < 0) | |
262 | pos = -pos-1; | |
263 | active_cache += pos; | |
264 | active_nr -= pos; | |
265 | first = 0; | |
266 | last = active_nr; | |
267 | while (last > first) { | |
268 | int next = (last + first) >> 1; | |
269 | struct cache_entry *ce = active_cache[next]; | |
270 | if (!strncmp(ce->name, prefix, prefix_len)) { | |
271 | first = next+1; | |
272 | continue; | |
273 | } | |
274 | last = next; | |
275 | } | |
276 | active_nr = last; | |
277 | } | |
278 | ||
279 | static void verify_pathspec(void) | |
280 | { | |
281 | const char **p, *n, *prev; | |
282 | char *real_prefix; | |
283 | unsigned long max; | |
284 | ||
285 | prev = NULL; | |
286 | max = PATH_MAX; | |
287 | for (p = pathspec; (n = *p) != NULL; p++) { | |
288 | int i, len = 0; | |
289 | for (i = 0; i < max; i++) { | |
290 | char c = n[i]; | |
291 | if (prev && prev[i] != c) | |
292 | break; | |
293 | if (!c || c == '*' || c == '?') | |
294 | break; | |
295 | if (c == '/') | |
296 | len = i+1; | |
297 | } | |
298 | prev = n; | |
299 | if (len < max) { | |
300 | max = len; | |
301 | if (!max) | |
302 | break; | |
303 | } | |
304 | } | |
305 | ||
306 | if (prefix_offset > max || memcmp(prev, prefix, prefix_offset)) | |
307 | die("git-ls-files: cannot generate relative filenames containing '..'"); | |
308 | ||
309 | real_prefix = NULL; | |
310 | prefix_len = max; | |
311 | if (max) { | |
312 | real_prefix = xmalloc(max + 1); | |
313 | memcpy(real_prefix, prev, max); | |
314 | real_prefix[max] = 0; | |
315 | } | |
316 | prefix = real_prefix; | |
317 | } | |
318 | ||
319 | static const char ls_files_usage[] = | |
320 | "git-ls-files [-z] [-t] [-v] (--[cached|deleted|others|stage|unmerged|killed|modified])* " | |
321 | "[ --ignored ] [--exclude=<pattern>] [--exclude-from=<file>] " | |
322 | "[ --exclude-per-directory=<filename> ] [--full-name] [--abbrev] " | |
323 | "[--] [<file>]*"; | |
324 | ||
325 | int cmd_ls_files(int argc, const char **argv, char** envp) | |
326 | { | |
327 | int i; | |
328 | int exc_given = 0; | |
329 | struct dir_struct dir; | |
330 | ||
331 | memset(&dir, 0, sizeof(dir)); | |
332 | prefix = setup_git_directory(); | |
333 | if (prefix) | |
334 | prefix_offset = strlen(prefix); | |
335 | git_config(git_default_config); | |
336 | ||
337 | for (i = 1; i < argc; i++) { | |
338 | const char *arg = argv[i]; | |
339 | ||
340 | if (!strcmp(arg, "--")) { | |
341 | i++; | |
342 | break; | |
343 | } | |
344 | if (!strcmp(arg, "-z")) { | |
345 | line_terminator = 0; | |
346 | continue; | |
347 | } | |
348 | if (!strcmp(arg, "-t") || !strcmp(arg, "-v")) { | |
349 | tag_cached = "H "; | |
350 | tag_unmerged = "M "; | |
351 | tag_removed = "R "; | |
352 | tag_modified = "C "; | |
353 | tag_other = "? "; | |
354 | tag_killed = "K "; | |
355 | if (arg[1] == 'v') | |
356 | show_valid_bit = 1; | |
357 | continue; | |
358 | } | |
359 | if (!strcmp(arg, "-c") || !strcmp(arg, "--cached")) { | |
360 | show_cached = 1; | |
361 | continue; | |
362 | } | |
363 | if (!strcmp(arg, "-d") || !strcmp(arg, "--deleted")) { | |
364 | show_deleted = 1; | |
365 | continue; | |
366 | } | |
367 | if (!strcmp(arg, "-m") || !strcmp(arg, "--modified")) { | |
368 | show_modified = 1; | |
369 | continue; | |
370 | } | |
371 | if (!strcmp(arg, "-o") || !strcmp(arg, "--others")) { | |
372 | show_others = 1; | |
373 | continue; | |
374 | } | |
375 | if (!strcmp(arg, "-i") || !strcmp(arg, "--ignored")) { | |
376 | dir.show_ignored = 1; | |
377 | continue; | |
378 | } | |
379 | if (!strcmp(arg, "-s") || !strcmp(arg, "--stage")) { | |
380 | show_stage = 1; | |
381 | continue; | |
382 | } | |
383 | if (!strcmp(arg, "-k") || !strcmp(arg, "--killed")) { | |
384 | show_killed = 1; | |
385 | continue; | |
386 | } | |
387 | if (!strcmp(arg, "--directory")) { | |
388 | dir.show_other_directories = 1; | |
389 | continue; | |
390 | } | |
391 | if (!strcmp(arg, "--no-empty-directory")) { | |
392 | dir.hide_empty_directories = 1; | |
393 | continue; | |
394 | } | |
395 | if (!strcmp(arg, "-u") || !strcmp(arg, "--unmerged")) { | |
396 | /* There's no point in showing unmerged unless | |
397 | * you also show the stage information. | |
398 | */ | |
399 | show_stage = 1; | |
400 | show_unmerged = 1; | |
401 | continue; | |
402 | } | |
403 | if (!strcmp(arg, "-x") && i+1 < argc) { | |
404 | exc_given = 1; | |
405 | add_exclude(argv[++i], "", 0, &dir.exclude_list[EXC_CMDL]); | |
406 | continue; | |
407 | } | |
408 | if (!strncmp(arg, "--exclude=", 10)) { | |
409 | exc_given = 1; | |
410 | add_exclude(arg+10, "", 0, &dir.exclude_list[EXC_CMDL]); | |
411 | continue; | |
412 | } | |
413 | if (!strcmp(arg, "-X") && i+1 < argc) { | |
414 | exc_given = 1; | |
415 | add_excludes_from_file(&dir, argv[++i]); | |
416 | continue; | |
417 | } | |
418 | if (!strncmp(arg, "--exclude-from=", 15)) { | |
419 | exc_given = 1; | |
420 | add_excludes_from_file(&dir, arg+15); | |
421 | continue; | |
422 | } | |
423 | if (!strncmp(arg, "--exclude-per-directory=", 24)) { | |
424 | exc_given = 1; | |
425 | dir.exclude_per_dir = arg + 24; | |
426 | continue; | |
427 | } | |
428 | if (!strcmp(arg, "--full-name")) { | |
429 | prefix_offset = 0; | |
430 | continue; | |
431 | } | |
432 | if (!strcmp(arg, "--error-unmatch")) { | |
433 | error_unmatch = 1; | |
434 | continue; | |
435 | } | |
436 | if (!strncmp(arg, "--abbrev=", 9)) { | |
437 | abbrev = strtoul(arg+9, NULL, 10); | |
438 | if (abbrev && abbrev < MINIMUM_ABBREV) | |
439 | abbrev = MINIMUM_ABBREV; | |
440 | else if (abbrev > 40) | |
441 | abbrev = 40; | |
442 | continue; | |
443 | } | |
444 | if (!strcmp(arg, "--abbrev")) { | |
445 | abbrev = DEFAULT_ABBREV; | |
446 | continue; | |
447 | } | |
448 | if (*arg == '-') | |
449 | usage(ls_files_usage); | |
450 | break; | |
451 | } | |
452 | ||
453 | pathspec = get_pathspec(prefix, argv + i); | |
454 | ||
455 | /* Verify that the pathspec matches the prefix */ | |
456 | if (pathspec) | |
457 | verify_pathspec(); | |
458 | ||
459 | /* Treat unmatching pathspec elements as errors */ | |
460 | if (pathspec && error_unmatch) { | |
461 | int num; | |
462 | for (num = 0; pathspec[num]; num++) | |
463 | ; | |
464 | ps_matched = xcalloc(1, num); | |
465 | } | |
466 | ||
467 | if (dir.show_ignored && !exc_given) { | |
468 | fprintf(stderr, "%s: --ignored needs some exclude pattern\n", | |
469 | argv[0]); | |
470 | exit(1); | |
471 | } | |
472 | ||
473 | /* With no flags, we default to showing the cached files */ | |
474 | if (!(show_stage | show_deleted | show_others | show_unmerged | | |
475 | show_killed | show_modified)) | |
476 | show_cached = 1; | |
477 | ||
478 | read_cache(); | |
479 | if (prefix) | |
480 | prune_cache(); | |
481 | show_files(&dir); | |
482 | ||
483 | if (ps_matched) { | |
484 | /* We need to make sure all pathspec matched otherwise | |
485 | * it is an error. | |
486 | */ | |
487 | int num, errors = 0; | |
488 | for (num = 0; pathspec[num]; num++) { | |
489 | if (ps_matched[num]) | |
490 | continue; | |
491 | error("pathspec '%s' did not match any.", | |
492 | pathspec[num] + prefix_offset); | |
493 | errors++; | |
494 | } | |
495 | return errors ? 1 : 0; | |
496 | } | |
497 | ||
498 | return 0; | |
499 | } |