date.c: only use the TZ names if we don't have anything better.
[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 line_terminator = '\n';
20
21 static int nr_excludes;
22 static const char **excludes;
23 static int excludes_alloc;
24
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 }
33
34 static void add_excludes_from_file(const char *fname)
35 {
36 int fd, i;
37 long size;
38 char *buf, *entry;
39
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);
55
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;
67
68 err: perror(fname);
69 exit(1);
70 }
71
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 }
84
85 static const char **dir;
86 static int nr_dir;
87 static int dir_alloc;
88
89 static void add_name(const char *pathname, int len)
90 {
91 char *name;
92
93 if (cache_name_pos(pathname, len) >= 0)
94 return;
95
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;
103 }
104
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)
114 {
115 DIR *dir = opendir(path);
116
117 if (dir) {
118 struct dirent *de;
119 char fullname[MAXPATHLEN + 1];
120 memcpy(fullname, base, baselen);
121
122 while ((de = readdir(dir)) != NULL) {
123 int len;
124
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);
131
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 }
155 }
156
157 static int cmp_name(const void *p1, const void *p2)
158 {
159 const char *n1 = *(const char **)p1;
160 const char *n2 = *(const char **)p2;
161 int l1 = strlen(n1), l2 = strlen(n2);
162
163 return cache_name_compare(n1, l1, n2, l2);
164 }
165
166 static void show_files(void)
167 {
168 int i;
169
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 }
207 }
208
209 static const char *ls_files_usage =
210 "ls-files [-z] (--[cached|deleted|others|stage|unmerged])* "
211 "[ --ignored [--exclude=<pattern>] [--exclude-from=<file>) ]";
212
213 int main(int argc, char **argv)
214 {
215 int i;
216
217 for (i = 1; i < argc; i++) {
218 char *arg = argv[i];
219
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 }
247
248 if (show_ignored && !nr_excludes) {
249 fprintf(stderr, "%s: --ignored needs some exclude pattern\n", argv[0]);
250 exit(1);
251 }
252
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;
256
257 read_cache();
258 show_files();
259 return 0;
260 }