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#include "cache.h"
12static int show_deleted = 0;
14static int show_cached = 0;
15static int show_others = 0;
16static int show_ignored = 0;
17static int show_stage = 0;
18static int show_unmerged = 0;
19static int show_killed = 0;
20static int line_terminator = '\n';
21static const char *tag_cached = "";
23static const char *tag_unmerged = "";
24static const char *tag_removed = "";
25static const char *tag_other = "";
26static const char *tag_killed = "";
27static int nr_excludes;
29static const char **excludes;
30static int excludes_alloc;
31static 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}
40static void add_excludes_from_file(const char *fname)
42{
43 int fd, i;
44 long size;
45 char *buf, *entry;
46 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 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;
74err: perror(fname);
76 exit(1);
77}
78static 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}
91struct nond_on_fs {
93 int len;
94 char name[0];
95};
96static struct nond_on_fs **dir;
98static int nr_dir;
99static int dir_alloc;
100static void add_name(const char *pathname, int len)
102{
103 struct nond_on_fs *ent;
104 if (cache_name_pos(pathname, len) >= 0)
106 return;
107 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/*
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 */
127static void read_directory(const char *path, const char *base, int baselen)
128{
129 DIR *dir = opendir(path);
130 if (dir) {
132 struct dirent *de;
133 char fullname[MAXPATHLEN + 1];
134 memcpy(fullname, base, baselen);
135 while ((de = readdir(dir)) != NULL) {
137 int len;
138 if (de->d_name[0] == '.')
140 continue;
141 if (excluded(de->d_name) != show_ignored)
142 continue;
143 len = strlen(de->d_name);
144 memcpy(fullname + baselen, de->d_name, len+1);
145 switch (DTYPE(de)) {
147 struct stat st;
148 default:
149 continue;
150 case DT_UNKNOWN:
151 if (lstat(fullname, &st))
152 continue;
153 if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
154 break;
155 if (!S_ISDIR(st.st_mode))
156 continue;
157 /* fallthrough */
158 case DT_DIR:
159 memcpy(fullname + baselen + len, "/", 2);
160 read_directory(fullname, fullname,
161 baselen + len + 1);
162 continue;
163 case DT_REG:
164 case DT_LNK:
165 break;
166 }
167 add_name(fullname, baselen + len);
168 }
169 closedir(dir);
170 }
171}
172static int cmp_name(const void *p1, const void *p2)
174{
175 const struct nond_on_fs *e1 = *(const struct nond_on_fs **)p1;
176 const struct nond_on_fs *e2 = *(const struct nond_on_fs **)p2;
177 return cache_name_compare(e1->name, e1->len,
179 e2->name, e2->len);
180}
181static void show_killed_files()
183{
184 int i;
185 for (i = 0; i < nr_dir; i++) {
186 struct nond_on_fs *ent = dir[i];
187 char *cp, *sp;
188 int pos, len, killed = 0;
189 for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
191 sp = strchr(cp, '/');
192 if (!sp) {
193 /* If ent->name is prefix of an entry in the
194 * cache, it will be killed.
195 */
196 pos = cache_name_pos(ent->name, ent->len);
197 if (0 <= pos)
198 die("bug in show-killed-files");
199 pos = -pos - 1;
200 while (pos < active_nr &&
201 ce_stage(active_cache[pos]))
202 pos++; /* skip unmerged */
203 if (active_nr <= pos)
204 break;
205 /* pos points at a name immediately after
206 * ent->name in the cache. Does it expect
207 * ent->name to be a directory?
208 */
209 len = ce_namelen(active_cache[pos]);
210 if ((ent->len < len) &&
211 !strncmp(active_cache[pos]->name,
212 ent->name, ent->len) &&
213 active_cache[pos]->name[ent->len] == '/')
214 killed = 1;
215 break;
216 }
217 if (0 <= cache_name_pos(ent->name, sp - ent->name)) {
218 /* If any of the leading directories in
219 * ent->name is registered in the cache,
220 * ent->name will be killed.
221 */
222 killed = 1;
223 break;
224 }
225 }
226 if (killed)
227 printf("%s%.*s%c", tag_killed,
228 dir[i]->len, dir[i]->name,
229 line_terminator);
230 }
231}
232static void show_files(void)
234{
235 int i;
236 /* For cached/deleted files we don't need to even do the readdir */
238 if (show_others || show_killed) {
239 read_directory(".", "", 0);
240 qsort(dir, nr_dir, sizeof(struct nond_on_fs *), cmp_name);
241 if (show_others)
242 for (i = 0; i < nr_dir; i++)
243 printf("%s%.*s%c", tag_other,
244 dir[i]->len, dir[i]->name,
245 line_terminator);
246 if (show_killed)
247 show_killed_files();
248 }
249 if (show_cached | show_stage) {
250 for (i = 0; i < active_nr; i++) {
251 struct cache_entry *ce = active_cache[i];
252 if (excluded(ce->name) != show_ignored)
253 continue;
254 if (show_unmerged && !ce_stage(ce))
255 continue;
256 if (!show_stage)
257 printf("%s%s%c",
258 ce_stage(ce) ? tag_unmerged :
259 tag_cached,
260 ce->name, line_terminator);
261 else
262 printf("%s%06o %s %d %s%c",
263 ce_stage(ce) ? tag_unmerged :
264 tag_cached,
265 ntohl(ce->ce_mode),
266 sha1_to_hex(ce->sha1),
267 ce_stage(ce),
268 ce->name, line_terminator);
269 }
270 }
271 if (show_deleted) {
272 for (i = 0; i < active_nr; i++) {
273 struct cache_entry *ce = active_cache[i];
274 struct stat st;
275 if (excluded(ce->name) != show_ignored)
276 continue;
277 if (!lstat(ce->name, &st))
278 continue;
279 printf("%s%s%c", tag_removed, ce->name,
280 line_terminator);
281 }
282 }
283}
284static const char *ls_files_usage =
286 "git-ls-files [-z] [-t] (--[cached|deleted|others|stage|unmerged|killed])* "
287 "[ --ignored [--exclude=<pattern>] [--exclude-from=<file>) ]";
288int main(int argc, char **argv)
290{
291 int i;
292 for (i = 1; i < argc; i++) {
294 char *arg = argv[i];
295 if (!strcmp(arg, "-z")) {
297 line_terminator = 0;
298 } else if (!strcmp(arg, "-t")) {
299 tag_cached = "H ";
300 tag_unmerged = "M ";
301 tag_removed = "R ";
302 tag_other = "? ";
303 tag_killed = "K ";
304 } else if (!strcmp(arg, "-c") || !strcmp(arg, "--cached")) {
305 show_cached = 1;
306 } else if (!strcmp(arg, "-d") || !strcmp(arg, "--deleted")) {
307 show_deleted = 1;
308 } else if (!strcmp(arg, "-o") || !strcmp(arg, "--others")) {
309 show_others = 1;
310 } else if (!strcmp(arg, "-i") || !strcmp(arg, "--ignored")) {
311 show_ignored = 1;
312 } else if (!strcmp(arg, "-s") || !strcmp(arg, "--stage")) {
313 show_stage = 1;
314 } else if (!strcmp(arg, "-k") || !strcmp(arg, "--killed")) {
315 show_killed = 1;
316 } else if (!strcmp(arg, "-u") || !strcmp(arg, "--unmerged")) {
317 /* There's no point in showing unmerged unless
318 * you also show the stage information.
319 */
320 show_stage = 1;
321 show_unmerged = 1;
322 } else if (!strcmp(arg, "-x") && i+1 < argc) {
323 add_exclude(argv[++i]);
324 } else if (!strncmp(arg, "--exclude=", 10)) {
325 add_exclude(arg+10);
326 } else if (!strcmp(arg, "-X") && i+1 < argc) {
327 add_excludes_from_file(argv[++i]);
328 } else if (!strncmp(arg, "--exclude-from=", 15)) {
329 add_excludes_from_file(arg+15);
330 } else
331 usage(ls_files_usage);
332 }
333 if (show_ignored && !nr_excludes) {
335 fprintf(stderr, "%s: --ignored needs some exclude pattern\n",
336 argv[0]);
337 exit(1);
338 }
339 /* With no flags, we default to showing the cached files */
341 if (!(show_stage | show_deleted | show_others | show_unmerged | show_killed))
342 show_cached = 1;
343 read_cache();
345 show_files();
346 return 0;
347}