Merge master.kernel.org:/pub/scm/gitk/gitk
[git/git.git] / 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 <dirent.h>
9 #include <fnmatch.h>
10
11 #include "cache.h"
12
13 static int show_deleted = 0;
14 static int show_cached = 0;
15 static int show_others = 0;
16 static int show_ignored = 0;
17 static int show_stage = 0;
18 static int show_unmerged = 0;
19 static int show_killed = 0;
20 static int line_terminator = '\n';
21
22 static const char *tag_cached = "";
23 static const char *tag_unmerged = "";
24 static const char *tag_removed = "";
25 static const char *tag_other = "";
26 static const char *tag_killed = "";
27
28 static int nr_excludes;
29 static const char **excludes;
30 static int excludes_alloc;
31
32 static void add_exclude(const char *string)
33 {
34 if (nr_excludes == excludes_alloc) {
35 excludes_alloc = alloc_nr(excludes_alloc);
36 excludes = realloc(excludes, excludes_alloc*sizeof(char *));
37 }
38 excludes[nr_excludes++] = string;
39 }
40
41 static void add_excludes_from_file(const char *fname)
42 {
43 int fd, i;
44 long size;
45 char *buf, *entry;
46
47 fd = open(fname, O_RDONLY);
48 if (fd < 0)
49 goto err;
50 size = lseek(fd, 0, SEEK_END);
51 if (size < 0)
52 goto err;
53 lseek(fd, 0, SEEK_SET);
54 if (size == 0) {
55 close(fd);
56 return;
57 }
58 buf = xmalloc(size);
59 if (read(fd, buf, size) != size)
60 goto err;
61 close(fd);
62
63 entry = buf;
64 for (i = 0; i < size; i++) {
65 if (buf[i] == '\n') {
66 if (entry != buf + i) {
67 buf[i] = 0;
68 add_exclude(entry);
69 }
70 entry = buf + i + 1;
71 }
72 }
73 return;
74
75 err: perror(fname);
76 exit(1);
77 }
78
79 static int excluded(const char *pathname)
80 {
81 int i;
82 if (nr_excludes) {
83 const char *basename = strrchr(pathname, '/');
84 basename = (basename) ? basename+1 : pathname;
85 for (i = 0; i < nr_excludes; i++)
86 if (fnmatch(excludes[i], basename, 0) == 0)
87 return 1;
88 }
89 return 0;
90 }
91
92 struct nond_on_fs {
93 int len;
94 char name[0];
95 };
96
97 static struct nond_on_fs **dir;
98 static int nr_dir;
99 static int dir_alloc;
100
101 static void add_name(const char *pathname, int len)
102 {
103 struct nond_on_fs *ent;
104
105 if (cache_name_pos(pathname, len) >= 0)
106 return;
107
108 if (nr_dir == dir_alloc) {
109 dir_alloc = alloc_nr(dir_alloc);
110 dir = xrealloc(dir, dir_alloc*sizeof(ent));
111 }
112 ent = xmalloc(sizeof(*ent) + len + 1);
113 ent->len = len;
114 memcpy(ent->name, pathname, len);
115 dir[nr_dir++] = ent;
116 }
117
118 /*
119 * Read a directory tree. We currently ignore anything but
120 * directories, regular files and symlinks. That's because git
121 * doesn't handle them at all yet. Maybe that will change some
122 * day.
123 *
124 * Also, we currently ignore all names starting with a dot.
125 * That likely will not change.
126 */
127 static void read_directory(const char *path, const char *base, int baselen)
128 {
129 DIR *dir = opendir(path);
130
131 if (dir) {
132 struct dirent *de;
133 char fullname[MAXPATHLEN + 1];
134 memcpy(fullname, base, baselen);
135
136 while ((de = readdir(dir)) != NULL) {
137 int len;
138
139 if ((de->d_name[0] == '.') &&
140 (de->d_name[1] == 0 ||
141 !strcmp(de->d_name + 1, ".") ||
142 !strcmp(de->d_name + 1, "git")))
143 continue;
144 if (excluded(de->d_name) != show_ignored)
145 continue;
146 len = strlen(de->d_name);
147 memcpy(fullname + baselen, de->d_name, len+1);
148
149 switch (DTYPE(de)) {
150 struct stat st;
151 default:
152 continue;
153 case DT_UNKNOWN:
154 if (lstat(fullname, &st))
155 continue;
156 if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
157 break;
158 if (!S_ISDIR(st.st_mode))
159 continue;
160 /* fallthrough */
161 case DT_DIR:
162 memcpy(fullname + baselen + len, "/", 2);
163 read_directory(fullname, fullname,
164 baselen + len + 1);
165 continue;
166 case DT_REG:
167 case DT_LNK:
168 break;
169 }
170 add_name(fullname, baselen + len);
171 }
172 closedir(dir);
173 }
174 }
175
176 static int cmp_name(const void *p1, const void *p2)
177 {
178 const struct nond_on_fs *e1 = *(const struct nond_on_fs **)p1;
179 const struct nond_on_fs *e2 = *(const struct nond_on_fs **)p2;
180
181 return cache_name_compare(e1->name, e1->len,
182 e2->name, e2->len);
183 }
184
185 static void show_killed_files(void)
186 {
187 int i;
188 for (i = 0; i < nr_dir; i++) {
189 struct nond_on_fs *ent = dir[i];
190 char *cp, *sp;
191 int pos, len, killed = 0;
192
193 for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
194 sp = strchr(cp, '/');
195 if (!sp) {
196 /* If ent->name is prefix of an entry in the
197 * cache, it will be killed.
198 */
199 pos = cache_name_pos(ent->name, ent->len);
200 if (0 <= pos)
201 die("bug in show-killed-files");
202 pos = -pos - 1;
203 while (pos < active_nr &&
204 ce_stage(active_cache[pos]))
205 pos++; /* skip unmerged */
206 if (active_nr <= pos)
207 break;
208 /* pos points at a name immediately after
209 * ent->name in the cache. Does it expect
210 * ent->name to be a directory?
211 */
212 len = ce_namelen(active_cache[pos]);
213 if ((ent->len < len) &&
214 !strncmp(active_cache[pos]->name,
215 ent->name, ent->len) &&
216 active_cache[pos]->name[ent->len] == '/')
217 killed = 1;
218 break;
219 }
220 if (0 <= cache_name_pos(ent->name, sp - ent->name)) {
221 /* If any of the leading directories in
222 * ent->name is registered in the cache,
223 * ent->name will be killed.
224 */
225 killed = 1;
226 break;
227 }
228 }
229 if (killed)
230 printf("%s%.*s%c", tag_killed,
231 dir[i]->len, dir[i]->name,
232 line_terminator);
233 }
234 }
235
236 static void show_files(void)
237 {
238 int i;
239
240 /* For cached/deleted files we don't need to even do the readdir */
241 if (show_others || show_killed) {
242 read_directory(".", "", 0);
243 qsort(dir, nr_dir, sizeof(struct nond_on_fs *), cmp_name);
244 if (show_others)
245 for (i = 0; i < nr_dir; i++)
246 printf("%s%.*s%c", tag_other,
247 dir[i]->len, dir[i]->name,
248 line_terminator);
249 if (show_killed)
250 show_killed_files();
251 }
252 if (show_cached | show_stage) {
253 for (i = 0; i < active_nr; i++) {
254 struct cache_entry *ce = active_cache[i];
255 if (excluded(ce->name) != show_ignored)
256 continue;
257 if (show_unmerged && !ce_stage(ce))
258 continue;
259 if (!show_stage)
260 printf("%s%s%c",
261 ce_stage(ce) ? tag_unmerged :
262 tag_cached,
263 ce->name, line_terminator);
264 else
265 printf("%s%06o %s %d\t%s%c",
266 ce_stage(ce) ? tag_unmerged :
267 tag_cached,
268 ntohl(ce->ce_mode),
269 sha1_to_hex(ce->sha1),
270 ce_stage(ce),
271 ce->name, line_terminator);
272 }
273 }
274 if (show_deleted) {
275 for (i = 0; i < active_nr; i++) {
276 struct cache_entry *ce = active_cache[i];
277 struct stat st;
278 if (excluded(ce->name) != show_ignored)
279 continue;
280 if (!lstat(ce->name, &st))
281 continue;
282 printf("%s%s%c", tag_removed, ce->name,
283 line_terminator);
284 }
285 }
286 }
287
288 static const char *ls_files_usage =
289 "git-ls-files [-z] [-t] (--[cached|deleted|others|stage|unmerged|killed])* "
290 "[ --ignored [--exclude=<pattern>] [--exclude-from=<file>) ]";
291
292 int main(int argc, char **argv)
293 {
294 int i;
295
296 for (i = 1; i < argc; i++) {
297 char *arg = argv[i];
298
299 if (!strcmp(arg, "-z")) {
300 line_terminator = 0;
301 } else if (!strcmp(arg, "-t")) {
302 tag_cached = "H ";
303 tag_unmerged = "M ";
304 tag_removed = "R ";
305 tag_other = "? ";
306 tag_killed = "K ";
307 } else if (!strcmp(arg, "-c") || !strcmp(arg, "--cached")) {
308 show_cached = 1;
309 } else if (!strcmp(arg, "-d") || !strcmp(arg, "--deleted")) {
310 show_deleted = 1;
311 } else if (!strcmp(arg, "-o") || !strcmp(arg, "--others")) {
312 show_others = 1;
313 } else if (!strcmp(arg, "-i") || !strcmp(arg, "--ignored")) {
314 show_ignored = 1;
315 } else if (!strcmp(arg, "-s") || !strcmp(arg, "--stage")) {
316 show_stage = 1;
317 } else if (!strcmp(arg, "-k") || !strcmp(arg, "--killed")) {
318 show_killed = 1;
319 } else if (!strcmp(arg, "-u") || !strcmp(arg, "--unmerged")) {
320 /* There's no point in showing unmerged unless
321 * you also show the stage information.
322 */
323 show_stage = 1;
324 show_unmerged = 1;
325 } else if (!strcmp(arg, "-x") && i+1 < argc) {
326 add_exclude(argv[++i]);
327 } else if (!strncmp(arg, "--exclude=", 10)) {
328 add_exclude(arg+10);
329 } else if (!strcmp(arg, "-X") && i+1 < argc) {
330 add_excludes_from_file(argv[++i]);
331 } else if (!strncmp(arg, "--exclude-from=", 15)) {
332 add_excludes_from_file(arg+15);
333 } else
334 usage(ls_files_usage);
335 }
336
337 if (show_ignored && !nr_excludes) {
338 fprintf(stderr, "%s: --ignored needs some exclude pattern\n",
339 argv[0]);
340 exit(1);
341 }
342
343 /* With no flags, we default to showing the cached files */
344 if (!(show_stage | show_deleted | show_others | show_unmerged | show_killed))
345 show_cached = 1;
346
347 read_cache();
348 show_files();
349 return 0;
350 }