Replace filepattern with pathspec for consistency
[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"
13 #include "diff.h"
14 #include "diffcore.h"
15 #include "revision.h"
16 #include "bulk-checkin.h"
17
18 static const char * const builtin_add_usage[] = {
19         N_("git add [options] [--] <pathspec>..."),
20         NULL
21 };
22 static int patch_interactive, add_interactive, edit_interactive;
23 static int take_worktree_changes;
24
25 struct update_callback_data {
26         int flags;
27         int add_errors;
28 };
29
30 static int fix_unmerged_status(struct diff_filepair *p,
31                                struct update_callback_data *data)
32 {
33         if (p->status != DIFF_STATUS_UNMERGED)
34                 return p->status;
35         if (!(data->flags & ADD_CACHE_IGNORE_REMOVAL) && !p->two->mode)
36                 /*
37                  * This is not an explicit add request, and the
38                  * path is missing from the working tree (deleted)
39                  */
40                 return DIFF_STATUS_DELETED;
41         else
42                 /*
43                  * Either an explicit add request, or path exists
44                  * in the working tree.  An attempt to explicitly
45                  * add a path that does not exist in the working tree
46                  * will be caught as an error by the caller immediately.
47                  */
48                 return DIFF_STATUS_MODIFIED;
49 }
50
51 static void update_callback(struct diff_queue_struct *q,
52                             struct diff_options *opt, void *cbdata)
53 {
54         int i;
55         struct update_callback_data *data = cbdata;
56
57         for (i = 0; i < q->nr; i++) {
58                 struct diff_filepair *p = q->queue[i];
59                 const char *path = p->one->path;
60                 switch (fix_unmerged_status(p, data)) {
61                 default:
62                         die(_("unexpected diff status %c"), p->status);
63                 case DIFF_STATUS_MODIFIED:
64                 case DIFF_STATUS_TYPE_CHANGED:
65                         if (add_file_to_index(&the_index, path, data->flags)) {
66                                 if (!(data->flags & ADD_CACHE_IGNORE_ERRORS))
67                                         die(_("updating files failed"));
68                                 data->add_errors++;
69                         }
70                         break;
71                 case DIFF_STATUS_DELETED:
72                         if (data->flags & ADD_CACHE_IGNORE_REMOVAL)
73                                 break;
74                         if (!(data->flags & ADD_CACHE_PRETEND))
75                                 remove_file_from_index(&the_index, path);
76                         if (data->flags & (ADD_CACHE_PRETEND|ADD_CACHE_VERBOSE))
77                                 printf(_("remove '%s'\n"), path);
78                         break;
79                 }
80         }
81 }
82
83 int add_files_to_cache(const char *prefix, const char **pathspec, int flags)
84 {
85         struct update_callback_data data;
86         struct rev_info rev;
87         init_revisions(&rev, prefix);
88         setup_revisions(0, NULL, &rev, NULL);
89         init_pathspec(&rev.prune_data, pathspec);
90         rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
91         rev.diffopt.format_callback = update_callback;
92         data.flags = flags;
93         data.add_errors = 0;
94         rev.diffopt.format_callback_data = &data;
95         rev.max_count = 0; /* do not compare unmerged paths with stage #2 */
96         run_diff_files(&rev, DIFF_RACY_IS_MODIFIED);
97         return !!data.add_errors;
98 }
99
100 static void fill_pathspec_matches(const char **pathspec, char *seen, int specs)
101 {
102         int num_unmatched = 0, i;
103
104         /*
105          * Since we are walking the index as if we were walking the directory,
106          * we have to mark the matched pathspec as seen; otherwise we will
107          * mistakenly think that the user gave a pathspec that did not match
108          * anything.
109          */
110         for (i = 0; i < specs; i++)
111                 if (!seen[i])
112                         num_unmatched++;
113         if (!num_unmatched)
114                 return;
115         for (i = 0; i < active_nr; i++) {
116                 struct cache_entry *ce = active_cache[i];
117                 match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen);
118         }
119 }
120
121 static char *find_used_pathspec(const char **pathspec)
122 {
123         char *seen;
124         int i;
125
126         for (i = 0; pathspec[i];  i++)
127                 ; /* just counting */
128         seen = xcalloc(i, 1);
129         fill_pathspec_matches(pathspec, seen, i);
130         return seen;
131 }
132
133 static char *prune_directory(struct dir_struct *dir, const char **pathspec, int prefix)
134 {
135         char *seen;
136         int i, specs;
137         struct dir_entry **src, **dst;
138
139         for (specs = 0; pathspec[specs];  specs++)
140                 /* nothing */;
141         seen = xcalloc(specs, 1);
142
143         src = dst = dir->entries;
144         i = dir->nr;
145         while (--i >= 0) {
146                 struct dir_entry *entry = *src++;
147                 if (match_pathspec(pathspec, entry->name, entry->len,
148                                    prefix, seen))
149                         *dst++ = entry;
150         }
151         dir->nr = dst - dir->entries;
152         fill_pathspec_matches(pathspec, seen, specs);
153         return seen;
154 }
155
156 static void treat_gitlinks(const char **pathspec)
157 {
158         int i;
159
160         if (!pathspec || !*pathspec)
161                 return;
162
163         for (i = 0; i < active_nr; i++) {
164                 struct cache_entry *ce = active_cache[i];
165                 if (S_ISGITLINK(ce->ce_mode)) {
166                         int len = ce_namelen(ce), j;
167                         for (j = 0; pathspec[j]; j++) {
168                                 int len2 = strlen(pathspec[j]);
169                                 if (len2 <= len || pathspec[j][len] != '/' ||
170                                     memcmp(ce->name, pathspec[j], len))
171                                         continue;
172                                 if (len2 == len + 1)
173                                         /* strip trailing slash */
174                                         pathspec[j] = xstrndup(ce->name, len);
175                                 else
176                                         die (_("Path '%s' is in submodule '%.*s'"),
177                                                 pathspec[j], len, ce->name);
178                         }
179                 }
180         }
181 }
182
183 static void refresh(int verbose, const char **pathspec)
184 {
185         char *seen;
186         int i, specs;
187
188         for (specs = 0; pathspec[specs];  specs++)
189                 /* nothing */;
190         seen = xcalloc(specs, 1);
191         refresh_index(&the_index, verbose ? REFRESH_IN_PORCELAIN : REFRESH_QUIET,
192                       pathspec, seen, _("Unstaged changes after refreshing the index:"));
193         for (i = 0; i < specs; i++) {
194                 if (!seen[i])
195                         die(_("pathspec '%s' did not match any files"), pathspec[i]);
196         }
197         free(seen);
198 }
199
200 static const char **validate_pathspec(int argc, const char **argv, const char *prefix)
201 {
202         const char **pathspec = get_pathspec(prefix, argv);
203
204         if (pathspec) {
205                 const char **p;
206                 for (p = pathspec; *p; p++) {
207                         if (has_symlink_leading_path(*p, strlen(*p))) {
208                                 int len = prefix ? strlen(prefix) : 0;
209                                 die(_("'%s' is beyond a symbolic link"), *p + len);
210                         }
211                 }
212         }
213
214         return pathspec;
215 }
216
217 int run_add_interactive(const char *revision, const char *patch_mode,
218                         const char **pathspec)
219 {
220         int status, ac, pc = 0;
221         const char **args;
222
223         if (pathspec)
224                 while (pathspec[pc])
225                         pc++;
226
227         args = xcalloc(sizeof(const char *), (pc + 5));
228         ac = 0;
229         args[ac++] = "add--interactive";
230         if (patch_mode)
231                 args[ac++] = patch_mode;
232         if (revision)
233                 args[ac++] = revision;
234         args[ac++] = "--";
235         if (pc) {
236                 memcpy(&(args[ac]), pathspec, sizeof(const char *) * pc);
237                 ac += pc;
238         }
239         args[ac] = NULL;
240
241         status = run_command_v_opt(args, RUN_GIT_CMD);
242         free(args);
243         return status;
244 }
245
246 int interactive_add(int argc, const char **argv, const char *prefix, int patch)
247 {
248         const char **pathspec = NULL;
249
250         if (argc) {
251                 pathspec = validate_pathspec(argc, argv, prefix);
252                 if (!pathspec)
253                         return -1;
254         }
255
256         return run_add_interactive(NULL,
257                                    patch ? "--patch" : NULL,
258                                    pathspec);
259 }
260
261 static int edit_patch(int argc, const char **argv, const char *prefix)
262 {
263         char *file = git_pathdup("ADD_EDIT.patch");
264         const char *apply_argv[] = { "apply", "--recount", "--cached",
265                 NULL, NULL };
266         struct child_process child;
267         struct rev_info rev;
268         int out;
269         struct stat st;
270
271         apply_argv[3] = file;
272
273         git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
274
275         if (read_cache() < 0)
276                 die (_("Could not read the index"));
277
278         init_revisions(&rev, prefix);
279         rev.diffopt.context = 7;
280
281         argc = setup_revisions(argc, argv, &rev, NULL);
282         rev.diffopt.output_format = DIFF_FORMAT_PATCH;
283         DIFF_OPT_SET(&rev.diffopt, IGNORE_DIRTY_SUBMODULES);
284         out = open(file, O_CREAT | O_WRONLY, 0666);
285         if (out < 0)
286                 die (_("Could not open '%s' for writing."), file);
287         rev.diffopt.file = xfdopen(out, "w");
288         rev.diffopt.close_file = 1;
289         if (run_diff_files(&rev, 0))
290                 die (_("Could not write patch"));
291
292         launch_editor(file, NULL, NULL);
293
294         if (stat(file, &st))
295                 die_errno(_("Could not stat '%s'"), file);
296         if (!st.st_size)
297                 die(_("Empty patch. Aborted."));
298
299         memset(&child, 0, sizeof(child));
300         child.git_cmd = 1;
301         child.argv = apply_argv;
302         if (run_command(&child))
303                 die (_("Could not apply '%s'"), file);
304
305         unlink(file);
306         free(file);
307         return 0;
308 }
309
310 static struct lock_file lock_file;
311
312 static const char ignore_error[] =
313 N_("The following paths are ignored by one of your .gitignore files:\n");
314
315 static int verbose = 0, show_only = 0, ignored_too = 0, refresh_only = 0;
316 static int ignore_add_errors, addremove, intent_to_add, ignore_missing = 0;
317
318 static struct option builtin_add_options[] = {
319         OPT__DRY_RUN(&show_only, N_("dry run")),
320         OPT__VERBOSE(&verbose, N_("be verbose")),
321         OPT_GROUP(""),
322         OPT_BOOLEAN('i', "interactive", &add_interactive, N_("interactive picking")),
323         OPT_BOOLEAN('p', "patch", &patch_interactive, N_("select hunks interactively")),
324         OPT_BOOLEAN('e', "edit", &edit_interactive, N_("edit current diff and apply")),
325         OPT__FORCE(&ignored_too, N_("allow adding otherwise ignored files")),
326         OPT_BOOLEAN('u', "update", &take_worktree_changes, N_("update tracked files")),
327         OPT_BOOLEAN('N', "intent-to-add", &intent_to_add, N_("record only the fact that the path will be added later")),
328         OPT_BOOLEAN('A', "all", &addremove, N_("add changes from all tracked and untracked files")),
329         OPT_BOOLEAN( 0 , "refresh", &refresh_only, N_("don't add, only refresh the index")),
330         OPT_BOOLEAN( 0 , "ignore-errors", &ignore_add_errors, N_("just skip files which cannot be added because of errors")),
331         OPT_BOOLEAN( 0 , "ignore-missing", &ignore_missing, N_("check if - even missing - files are ignored in dry run")),
332         OPT_END(),
333 };
334
335 static int add_config(const char *var, const char *value, void *cb)
336 {
337         if (!strcmp(var, "add.ignoreerrors") ||
338             !strcmp(var, "add.ignore-errors")) {
339                 ignore_add_errors = git_config_bool(var, value);
340                 return 0;
341         }
342         return git_default_config(var, value, cb);
343 }
344
345 static int add_files(struct dir_struct *dir, int flags)
346 {
347         int i, exit_status = 0;
348
349         if (dir->ignored_nr) {
350                 fprintf(stderr, _(ignore_error));
351                 for (i = 0; i < dir->ignored_nr; i++)
352                         fprintf(stderr, "%s\n", dir->ignored[i]->name);
353                 fprintf(stderr, _("Use -f if you really want to add them.\n"));
354                 die(_("no files added"));
355         }
356
357         for (i = 0; i < dir->nr; i++)
358                 if (add_file_to_cache(dir->entries[i]->name, flags)) {
359                         if (!ignore_add_errors)
360                                 die(_("adding files failed"));
361                         exit_status = 1;
362                 }
363         return exit_status;
364 }
365
366 int cmd_add(int argc, const char **argv, const char *prefix)
367 {
368         int exit_status = 0;
369         int newfd;
370         const char **pathspec;
371         struct dir_struct dir;
372         int flags;
373         int add_new_files;
374         int require_pathspec;
375         char *seen = NULL;
376
377         git_config(add_config, NULL);
378
379         argc = parse_options(argc, argv, prefix, builtin_add_options,
380                           builtin_add_usage, PARSE_OPT_KEEP_ARGV0);
381         if (patch_interactive)
382                 add_interactive = 1;
383         if (add_interactive)
384                 exit(interactive_add(argc - 1, argv + 1, prefix, patch_interactive));
385
386         if (edit_interactive)
387                 return(edit_patch(argc, argv, prefix));
388         argc--;
389         argv++;
390
391         if (addremove && take_worktree_changes)
392                 die(_("-A and -u are mutually incompatible"));
393         if (!show_only && ignore_missing)
394                 die(_("Option --ignore-missing can only be used together with --dry-run"));
395         if ((addremove || take_worktree_changes) && !argc) {
396                 static const char *here[2] = { ".", NULL };
397                 argc = 1;
398                 argv = here;
399         }
400
401         add_new_files = !take_worktree_changes && !refresh_only;
402         require_pathspec = !take_worktree_changes;
403
404         newfd = hold_locked_index(&lock_file, 1);
405
406         flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
407                  (show_only ? ADD_CACHE_PRETEND : 0) |
408                  (intent_to_add ? ADD_CACHE_INTENT : 0) |
409                  (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
410                  (!(addremove || take_worktree_changes)
411                   ? ADD_CACHE_IGNORE_REMOVAL : 0));
412
413         if (require_pathspec && argc == 0) {
414                 fprintf(stderr, _("Nothing specified, nothing added.\n"));
415                 fprintf(stderr, _("Maybe you wanted to say 'git add .'?\n"));
416                 return 0;
417         }
418         pathspec = validate_pathspec(argc, argv, prefix);
419
420         if (read_cache() < 0)
421                 die(_("index file corrupt"));
422         treat_gitlinks(pathspec);
423
424         if (add_new_files) {
425                 int baselen;
426
427                 /* Set up the default git porcelain excludes */
428                 memset(&dir, 0, sizeof(dir));
429                 if (!ignored_too) {
430                         dir.flags |= DIR_COLLECT_IGNORED;
431                         setup_standard_excludes(&dir);
432                 }
433
434                 /* This picks up the paths that are not tracked */
435                 baselen = fill_directory(&dir, pathspec);
436                 if (pathspec)
437                         seen = prune_directory(&dir, pathspec, baselen);
438         }
439
440         if (refresh_only) {
441                 refresh(verbose, pathspec);
442                 goto finish;
443         }
444
445         if (pathspec) {
446                 int i;
447                 struct path_exclude_check check;
448
449                 path_exclude_check_init(&check, &dir);
450                 if (!seen)
451                         seen = find_used_pathspec(pathspec);
452                 for (i = 0; pathspec[i]; i++) {
453                         if (!seen[i] && pathspec[i][0]
454                             && !file_exists(pathspec[i])) {
455                                 if (ignore_missing) {
456                                         int dtype = DT_UNKNOWN;
457                                         if (path_excluded(&check, pathspec[i], -1, &dtype))
458                                                 dir_add_ignored(&dir, pathspec[i], strlen(pathspec[i]));
459                                 } else
460                                         die(_("pathspec '%s' did not match any files"),
461                                             pathspec[i]);
462                         }
463                 }
464                 free(seen);
465                 path_exclude_check_clear(&check);
466         }
467
468         plug_bulk_checkin();
469
470         exit_status |= add_files_to_cache(prefix, pathspec, flags);
471
472         if (add_new_files)
473                 exit_status |= add_files(&dir, flags);
474
475         unplug_bulk_checkin();
476
477  finish:
478         if (active_cache_changed) {
479                 if (write_cache(newfd, active_cache, active_nr) ||
480                     commit_locked_index(&lock_file))
481                         die(_("Unable to write new index file"));
482         }
483
484         return exit_status;
485 }