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