Code

sha1_file: make the new sha1 object writing be coda-friendly.
[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 line_terminator = '\n';
21 static int nr_excludes;
22 static const char **excludes;
23 static int excludes_alloc;
25 static void add_exclude(const char *string)
26 {
27         if (nr_excludes == excludes_alloc) {
28                 excludes_alloc = alloc_nr(excludes_alloc);
29                 excludes = realloc(excludes, excludes_alloc*sizeof(char *));
30         }
31         excludes[nr_excludes++] = string;
32 }
34 static void add_excludes_from_file(const char *fname)
35 {
36         int fd, i;
37         long size;
38         char *buf, *entry;
40         fd = open(fname, O_RDONLY);
41         if (fd < 0)
42                 goto err;
43         size = lseek(fd, 0, SEEK_END);
44         if (size < 0)
45                 goto err;
46         lseek(fd, 0, SEEK_SET);
47         if (size == 0) {
48                 close(fd);
49                 return;
50         }
51         buf = xmalloc(size);
52         if (read(fd, buf, size) != size)
53                 goto err;
54         close(fd);
56         entry = buf;
57         for (i = 0; i < size; i++) {
58                 if (buf[i] == '\n') {
59                         if (entry != buf + i) {
60                                 buf[i] = 0;
61                                 add_exclude(entry);
62                         }
63                         entry = buf + i + 1;
64                 }
65         }
66         return;
68 err:    perror(fname);
69         exit(1);
70 }
72 static int excluded(const char *pathname)
73 {
74         int i;
75         if (nr_excludes) {
76                 const char *basename = strrchr(pathname, '/');
77                 basename = (basename) ? basename+1 : pathname;
78                 for (i = 0; i < nr_excludes; i++)
79                         if (fnmatch(excludes[i], basename, 0) == 0)
80                                 return 1;
81         }
82         return 0;
83 }
85 static const char **dir;
86 static int nr_dir;
87 static int dir_alloc;
89 static void add_name(const char *pathname, int len)
90 {
91         char *name;
93         if (cache_name_pos(pathname, len) >= 0)
94                 return;
96         if (nr_dir == dir_alloc) {
97                 dir_alloc = alloc_nr(dir_alloc);
98                 dir = xrealloc(dir, dir_alloc*sizeof(char *));
99         }
100         name = xmalloc(len + 1);
101         memcpy(name, pathname, len + 1);
102         dir[nr_dir++] = name;
105 /*
106  * Read a directory tree. We currently ignore anything but
107  * directories and regular files. That's because git doesn't
108  * handle them at all yet. Maybe that will change some day.
109  *
110  * Also, we currently ignore all names starting with a dot.
111  * That likely will not change.
112  */
113 static void read_directory(const char *path, const char *base, int baselen)
115         DIR *dir = opendir(path);
117         if (dir) {
118                 struct dirent *de;
119                 char fullname[MAXPATHLEN + 1];
120                 memcpy(fullname, base, baselen);
122                 while ((de = readdir(dir)) != NULL) {
123                         int len;
125                         if (de->d_name[0] == '.')
126                                 continue;
127                         if (excluded(de->d_name) != show_ignored)
128                                 continue;
129                         len = strlen(de->d_name);
130                         memcpy(fullname + baselen, de->d_name, len+1);
132                         switch (DTYPE(de)) {
133                         struct stat st;
134                         default:
135                                 continue;
136                         case DT_UNKNOWN:
137                                 if (lstat(fullname, &st))
138                                         continue;
139                                 if (S_ISREG(st.st_mode))
140                                         break;
141                                 if (!S_ISDIR(st.st_mode))
142                                         continue;
143                                 /* fallthrough */
144                         case DT_DIR:
145                                 memcpy(fullname + baselen + len, "/", 2);
146                                 read_directory(fullname, fullname, baselen + len + 1);
147                                 continue;
148                         case DT_REG:
149                                 break;
150                         }
151                         add_name(fullname, baselen + len);
152                 }
153                 closedir(dir);
154         }
157 static int cmp_name(const void *p1, const void *p2)
159         const char *n1 = *(const char **)p1;
160         const char *n2 = *(const char **)p2;
161         int l1 = strlen(n1), l2 = strlen(n2);
163         return cache_name_compare(n1, l1, n2, l2);
166 static void show_files(void)
168         int i;
170         /* For cached/deleted files we don't need to even do the readdir */
171         if (show_others) {
172                 read_directory(".", "", 0);
173                 qsort(dir, nr_dir, sizeof(char *), cmp_name);
174                 for (i = 0; i < nr_dir; i++)
175                         printf("%s%c", dir[i], line_terminator);
176         }
177         if (show_cached | show_stage) {
178                 for (i = 0; i < active_nr; i++) {
179                         struct cache_entry *ce = active_cache[i];
180                         if (excluded(ce->name) != show_ignored)
181                                 continue;
182                         if (show_unmerged && !ce_stage(ce))
183                                 continue;
184                         if (!show_stage)
185                                 printf("%s%c", ce->name, line_terminator);
186                         else
187                                 printf(/* "%06o %s %d %10d %s%c", */
188                                        "%06o %s %d %s%c",
189                                        ntohl(ce->ce_mode),
190                                        sha1_to_hex(ce->sha1),
191                                        ce_stage(ce),
192                                        /* ntohl(ce->ce_size), */
193                                        ce->name, line_terminator); 
194                 }
195         }
196         if (show_deleted) {
197                 for (i = 0; i < active_nr; i++) {
198                         struct cache_entry *ce = active_cache[i];
199                         struct stat st;
200                         if (excluded(ce->name) != show_ignored)
201                                 continue;
202                         if (!stat(ce->name, &st))
203                                 continue;
204                         printf("%s%c", ce->name, line_terminator);
205                 }
206         }
209 static const char *ls_files_usage =
210         "ls-files [-z] (--[cached|deleted|others|stage|unmerged])* "
211         "[ --ignored [--exclude=<pattern>] [--exclude-from=<file>) ]";
213 int main(int argc, char **argv)
215         int i;
217         for (i = 1; i < argc; i++) {
218                 char *arg = argv[i];
220                 if (!strcmp(arg, "-z")) {
221                         line_terminator = 0;
222                 } else if (!strcmp(arg, "-c") || !strcmp(arg, "--cached")) {
223                         show_cached = 1;
224                 } else if (!strcmp(arg, "-d") || !strcmp(arg, "--deleted")) {
225                         show_deleted = 1;
226                 } else if (!strcmp(arg, "-o") || !strcmp(arg, "--others")) {
227                         show_others = 1;
228                 } else if (!strcmp(arg, "-i") || !strcmp(arg, "--ignored")) {
229                         show_ignored = 1;
230                 } else if (!strcmp(arg, "-s") || !strcmp(arg, "--stage")) {
231                         show_stage = 1;
232                 } else if (!strcmp(arg, "-u") || !strcmp(arg, "--unmerged")) {
233                         // There's no point in showing unmerged unless you also show the stage information
234                         show_stage = 1;
235                         show_unmerged = 1;
236                 } else if (!strcmp(arg, "-x") && i+1 < argc) {
237                         add_exclude(argv[++i]);
238                 } else if (!strncmp(arg, "--exclude=", 10)) {
239                         add_exclude(arg+10);
240                 } else if (!strcmp(arg, "-X") && i+1 < argc) {
241                         add_excludes_from_file(argv[++i]);
242                 } else if (!strncmp(arg, "--exclude-from=", 15)) {
243                         add_excludes_from_file(arg+15);
244                 } else
245                         usage(ls_files_usage);
246         }
248         if (show_ignored && !nr_excludes) {
249                 fprintf(stderr, "%s: --ignored needs some exclude pattern\n", argv[0]);
250                 exit(1);
251         }
253         /* With no flags, we default to showing the cached files */
254         if (!(show_stage | show_deleted | show_others | show_unmerged))
255                 show_cached = 1;
257         read_cache();
258         show_files();
259         return 0;