Code

[PATCH] cleanup of in-code names
[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>
11 #include "cache.h"
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';
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 = "";
28 static int nr_excludes;
29 static const char **excludes;
30 static int excludes_alloc;
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 }
41 static void add_excludes_from_file(const char *fname)
42 {
43         int fd, i;
44         long size;
45         char *buf, *entry;
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);
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;
75 err:    perror(fname);
76         exit(1);
77 }
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 }
92 struct nond_on_fs {
93         int len;
94         char name[0];
95 };
97 static struct nond_on_fs **dir;
98 static int nr_dir;
99 static int dir_alloc;
101 static void add_name(const char *pathname, int len)
103         struct nond_on_fs *ent;
105         if (cache_name_pos(pathname, len) >= 0)
106                 return;
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;
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)
129         DIR *dir = opendir(path);
131         if (dir) {
132                 struct dirent *de;
133                 char fullname[MAXPATHLEN + 1];
134                 memcpy(fullname, base, baselen);
136                 while ((de = readdir(dir)) != NULL) {
137                         int len;
139                         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);
146                         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         }
173 static int cmp_name(const void *p1, const void *p2)
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;
178         return cache_name_compare(e1->name, e1->len,
179                                   e2->name, e2->len);
182 static void show_killed_files()
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;
190                 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         }
233 static void show_files(void)
235         int i;
237         /* 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         }
285 static const char *ls_files_usage =
286         "git-ls-files [-z] [-t] (--[cached|deleted|others|stage|unmerged|killed])* "
287         "[ --ignored [--exclude=<pattern>] [--exclude-from=<file>) ]";
289 int main(int argc, char **argv)
291         int i;
293         for (i = 1; i < argc; i++) {
294                 char *arg = argv[i];
296                 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         }
334         if (show_ignored && !nr_excludes) {
335                 fprintf(stderr, "%s: --ignored needs some exclude pattern\n",
336                         argv[0]);
337                 exit(1);
338         }
340         /* 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;
344         read_cache();
345         show_files();
346         return 0;