Code

Introduce an unlink(2) wrapper which gives warning if unlink failed
[git.git] / builtin-add.c
1 /*
2  * "git add" builtin command
3  *
4  * Copyright (C) 2006 Linus Torvalds
5  */
6 #include "cache.h"
7 #include "builtin.h"
8 #include "dir.h"
9 #include "exec_cmd.h"
10 #include "cache-tree.h"
11 #include "run-command.h"
12 #include "parse-options.h"
14 static const char * const builtin_add_usage[] = {
15         "git add [options] [--] <filepattern>...",
16         NULL
17 };
18 static int patch_interactive, add_interactive;
19 static int take_worktree_changes;
21 static void fill_pathspec_matches(const char **pathspec, char *seen, int specs)
22 {
23         int num_unmatched = 0, i;
25         /*
26          * Since we are walking the index as if we were walking the directory,
27          * we have to mark the matched pathspec as seen; otherwise we will
28          * mistakenly think that the user gave a pathspec that did not match
29          * anything.
30          */
31         for (i = 0; i < specs; i++)
32                 if (!seen[i])
33                         num_unmatched++;
34         if (!num_unmatched)
35                 return;
36         for (i = 0; i < active_nr; i++) {
37                 struct cache_entry *ce = active_cache[i];
38                 match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen);
39         }
40 }
42 static void prune_directory(struct dir_struct *dir, const char **pathspec, int prefix)
43 {
44         char *seen;
45         int i, specs;
46         struct dir_entry **src, **dst;
48         for (specs = 0; pathspec[specs];  specs++)
49                 /* nothing */;
50         seen = xcalloc(specs, 1);
52         src = dst = dir->entries;
53         i = dir->nr;
54         while (--i >= 0) {
55                 struct dir_entry *entry = *src++;
56                 if (match_pathspec(pathspec, entry->name, entry->len,
57                                    prefix, seen))
58                         *dst++ = entry;
59         }
60         dir->nr = dst - dir->entries;
61         fill_pathspec_matches(pathspec, seen, specs);
63         for (i = 0; i < specs; i++) {
64                 if (!seen[i] && !file_exists(pathspec[i]))
65                         die("pathspec '%s' did not match any files",
66                                         pathspec[i]);
67         }
68         free(seen);
69 }
71 static void treat_gitlinks(const char **pathspec)
72 {
73         int i;
75         if (!pathspec || !*pathspec)
76                 return;
78         for (i = 0; i < active_nr; i++) {
79                 struct cache_entry *ce = active_cache[i];
80                 if (S_ISGITLINK(ce->ce_mode)) {
81                         int len = ce_namelen(ce), j;
82                         for (j = 0; pathspec[j]; j++) {
83                                 int len2 = strlen(pathspec[j]);
84                                 if (len2 <= len || pathspec[j][len] != '/' ||
85                                     memcmp(ce->name, pathspec[j], len))
86                                         continue;
87                                 if (len2 == len + 1)
88                                         /* strip trailing slash */
89                                         pathspec[j] = xstrndup(ce->name, len);
90                                 else
91                                         die ("Path '%s' is in submodule '%.*s'",
92                                                 pathspec[j], len, ce->name);
93                         }
94                 }
95         }
96 }
98 static void fill_directory(struct dir_struct *dir, const char **pathspec,
99                 int ignored_too)
101         const char *path, *base;
102         int baselen;
104         /* Set up the default git porcelain excludes */
105         memset(dir, 0, sizeof(*dir));
106         if (!ignored_too) {
107                 dir->flags |= DIR_COLLECT_IGNORED;
108                 setup_standard_excludes(dir);
109         }
111         /*
112          * Calculate common prefix for the pathspec, and
113          * use that to optimize the directory walk
114          */
115         baselen = common_prefix(pathspec);
116         path = ".";
117         base = "";
118         if (baselen)
119                 path = base = xmemdupz(*pathspec, baselen);
121         /* Read the directory and prune it */
122         read_directory(dir, path, base, baselen, pathspec);
123         if (pathspec)
124                 prune_directory(dir, pathspec, baselen);
127 static void refresh(int verbose, const char **pathspec)
129         char *seen;
130         int i, specs;
132         for (specs = 0; pathspec[specs];  specs++)
133                 /* nothing */;
134         seen = xcalloc(specs, 1);
135         refresh_index(&the_index, verbose ? REFRESH_SAY_CHANGED : REFRESH_QUIET,
136                       pathspec, seen);
137         for (i = 0; i < specs; i++) {
138                 if (!seen[i])
139                         die("pathspec '%s' did not match any files", pathspec[i]);
140         }
141         free(seen);
144 static const char **validate_pathspec(int argc, const char **argv, const char *prefix)
146         const char **pathspec = get_pathspec(prefix, argv);
148         if (pathspec) {
149                 const char **p;
150                 for (p = pathspec; *p; p++) {
151                         if (has_symlink_leading_path(*p, strlen(*p))) {
152                                 int len = prefix ? strlen(prefix) : 0;
153                                 die("'%s' is beyond a symbolic link", *p + len);
154                         }
155                 }
156         }
158         return pathspec;
161 int interactive_add(int argc, const char **argv, const char *prefix)
163         int status, ac;
164         const char **args;
165         const char **pathspec = NULL;
167         if (argc) {
168                 pathspec = validate_pathspec(argc, argv, prefix);
169                 if (!pathspec)
170                         return -1;
171         }
173         args = xcalloc(sizeof(const char *), (argc + 4));
174         ac = 0;
175         args[ac++] = "add--interactive";
176         if (patch_interactive)
177                 args[ac++] = "--patch";
178         args[ac++] = "--";
179         if (argc) {
180                 memcpy(&(args[ac]), pathspec, sizeof(const char *) * argc);
181                 ac += argc;
182         }
183         args[ac] = NULL;
185         status = run_command_v_opt(args, RUN_GIT_CMD);
186         free(args);
187         return status;
190 static struct lock_file lock_file;
192 static const char ignore_error[] =
193 "The following paths are ignored by one of your .gitignore files:\n";
195 static int verbose = 0, show_only = 0, ignored_too = 0, refresh_only = 0;
196 static int ignore_add_errors, addremove, intent_to_add;
198 static struct option builtin_add_options[] = {
199         OPT__DRY_RUN(&show_only),
200         OPT__VERBOSE(&verbose),
201         OPT_GROUP(""),
202         OPT_BOOLEAN('i', "interactive", &add_interactive, "interactive picking"),
203         OPT_BOOLEAN('p', "patch", &patch_interactive, "interactive patching"),
204         OPT_BOOLEAN('f', "force", &ignored_too, "allow adding otherwise ignored files"),
205         OPT_BOOLEAN('u', "update", &take_worktree_changes, "update tracked files"),
206         OPT_BOOLEAN('N', "intent-to-add", &intent_to_add, "record only the fact that the path will be added later"),
207         OPT_BOOLEAN('A', "all", &addremove, "add all, noticing removal of tracked files"),
208         OPT_BOOLEAN( 0 , "refresh", &refresh_only, "don't add, only refresh the index"),
209         OPT_BOOLEAN( 0 , "ignore-errors", &ignore_add_errors, "just skip files which cannot be added because of errors"),
210         OPT_END(),
211 };
213 static int add_config(const char *var, const char *value, void *cb)
215         if (!strcasecmp(var, "add.ignore-errors")) {
216                 ignore_add_errors = git_config_bool(var, value);
217                 return 0;
218         }
219         return git_default_config(var, value, cb);
222 static int add_files(struct dir_struct *dir, int flags)
224         int i, exit_status = 0;
226         if (dir->ignored_nr) {
227                 fprintf(stderr, ignore_error);
228                 for (i = 0; i < dir->ignored_nr; i++)
229                         fprintf(stderr, "%s\n", dir->ignored[i]->name);
230                 fprintf(stderr, "Use -f if you really want to add them.\n");
231                 die("no files added");
232         }
234         for (i = 0; i < dir->nr; i++)
235                 if (add_file_to_cache(dir->entries[i]->name, flags)) {
236                         if (!ignore_add_errors)
237                                 die("adding files failed");
238                         exit_status = 1;
239                 }
240         return exit_status;
243 int cmd_add(int argc, const char **argv, const char *prefix)
245         int exit_status = 0;
246         int newfd;
247         const char **pathspec;
248         struct dir_struct dir;
249         int flags;
250         int add_new_files;
251         int require_pathspec;
253         argc = parse_options(argc, argv, builtin_add_options,
254                           builtin_add_usage, 0);
255         if (patch_interactive)
256                 add_interactive = 1;
257         if (add_interactive)
258                 exit(interactive_add(argc, argv, prefix));
260         git_config(add_config, NULL);
262         if (addremove && take_worktree_changes)
263                 die("-A and -u are mutually incompatible");
264         if ((addremove || take_worktree_changes) && !argc) {
265                 static const char *here[2] = { ".", NULL };
266                 argc = 1;
267                 argv = here;
268         }
270         add_new_files = !take_worktree_changes && !refresh_only;
271         require_pathspec = !take_worktree_changes;
273         newfd = hold_locked_index(&lock_file, 1);
275         flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
276                  (show_only ? ADD_CACHE_PRETEND : 0) |
277                  (intent_to_add ? ADD_CACHE_INTENT : 0) |
278                  (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
279                  (!(addremove || take_worktree_changes)
280                   ? ADD_CACHE_IGNORE_REMOVAL : 0));
282         if (require_pathspec && argc == 0) {
283                 fprintf(stderr, "Nothing specified, nothing added.\n");
284                 fprintf(stderr, "Maybe you wanted to say 'git add .'?\n");
285                 return 0;
286         }
287         pathspec = validate_pathspec(argc, argv, prefix);
289         if (read_cache() < 0)
290                 die("index file corrupt");
291         treat_gitlinks(pathspec);
293         if (add_new_files)
294                 /* This picks up the paths that are not tracked */
295                 fill_directory(&dir, pathspec, ignored_too);
297         if (refresh_only) {
298                 refresh(verbose, pathspec);
299                 goto finish;
300         }
302         exit_status |= add_files_to_cache(prefix, pathspec, flags);
304         if (add_new_files)
305                 exit_status |= add_files(&dir, flags);
307  finish:
308         if (active_cache_changed) {
309                 if (write_cache(newfd, active_cache, active_nr) ||
310                     commit_locked_index(&lock_file))
311                         die("Unable to write new index file");
312         }
314         return exit_status;