Code

Merge branch 'pb/reflog-dwim'
[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 "diff.h"
12 #include "diffcore.h"
13 #include "commit.h"
14 #include "revision.h"
15 #include "run-command.h"
16 #include "parse-options.h"
18 static const char * const builtin_add_usage[] = {
19         "git add [options] [--] <filepattern>...",
20         NULL
21 };
22 static int patch_interactive = 0, add_interactive = 0;
23 static int take_worktree_changes;
25 static void prune_directory(struct dir_struct *dir, const char **pathspec, int prefix)
26 {
27         char *seen;
28         int i, specs;
29         struct dir_entry **src, **dst;
31         for (specs = 0; pathspec[specs];  specs++)
32                 /* nothing */;
33         seen = xcalloc(specs, 1);
35         src = dst = dir->entries;
36         i = dir->nr;
37         while (--i >= 0) {
38                 struct dir_entry *entry = *src++;
39                 if (match_pathspec(pathspec, entry->name, entry->len,
40                                    prefix, seen))
41                         *dst++ = entry;
42         }
43         dir->nr = dst - dir->entries;
45         for (i = 0; i < specs; i++) {
46                 if (!seen[i] && !file_exists(pathspec[i]))
47                         die("pathspec '%s' did not match any files",
48                                         pathspec[i]);
49         }
50         free(seen);
51 }
53 static void fill_directory(struct dir_struct *dir, const char **pathspec,
54                 int ignored_too)
55 {
56         const char *path, *base;
57         int baselen;
59         /* Set up the default git porcelain excludes */
60         memset(dir, 0, sizeof(*dir));
61         if (!ignored_too) {
62                 dir->collect_ignored = 1;
63                 setup_standard_excludes(dir);
64         }
66         /*
67          * Calculate common prefix for the pathspec, and
68          * use that to optimize the directory walk
69          */
70         baselen = common_prefix(pathspec);
71         path = ".";
72         base = "";
73         if (baselen)
74                 path = base = xmemdupz(*pathspec, baselen);
76         /* Read the directory and prune it */
77         read_directory(dir, path, base, baselen, pathspec);
78         if (pathspec)
79                 prune_directory(dir, pathspec, baselen);
80 }
82 struct update_callback_data
83 {
84         int flags;
85         int add_errors;
86 };
88 static void update_callback(struct diff_queue_struct *q,
89                             struct diff_options *opt, void *cbdata)
90 {
91         int i;
92         struct update_callback_data *data = cbdata;
94         for (i = 0; i < q->nr; i++) {
95                 struct diff_filepair *p = q->queue[i];
96                 const char *path = p->one->path;
97                 switch (p->status) {
98                 default:
99                         die("unexpected diff status %c", p->status);
100                 case DIFF_STATUS_UNMERGED:
101                 case DIFF_STATUS_MODIFIED:
102                 case DIFF_STATUS_TYPE_CHANGED:
103                         if (add_file_to_cache(path, data->flags)) {
104                                 if (!(data->flags & ADD_CACHE_IGNORE_ERRORS))
105                                         die("updating files failed");
106                                 data->add_errors++;
107                         }
108                         break;
109                 case DIFF_STATUS_DELETED:
110                         if (!(data->flags & ADD_CACHE_PRETEND))
111                                 remove_file_from_cache(path);
112                         if (data->flags & (ADD_CACHE_PRETEND|ADD_CACHE_VERBOSE))
113                                 printf("remove '%s'\n", path);
114                         break;
115                 }
116         }
119 int add_files_to_cache(const char *prefix, const char **pathspec, int flags)
121         struct update_callback_data data;
122         struct rev_info rev;
123         init_revisions(&rev, prefix);
124         setup_revisions(0, NULL, &rev, NULL);
125         rev.prune_data = pathspec;
126         rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
127         rev.diffopt.format_callback = update_callback;
128         data.flags = flags;
129         data.add_errors = 0;
130         rev.diffopt.format_callback_data = &data;
131         run_diff_files(&rev, DIFF_RACY_IS_MODIFIED);
132         return !!data.add_errors;
135 static void refresh(int verbose, const char **pathspec)
137         char *seen;
138         int i, specs;
140         for (specs = 0; pathspec[specs];  specs++)
141                 /* nothing */;
142         seen = xcalloc(specs, 1);
143         refresh_index(&the_index, verbose ? REFRESH_SAY_CHANGED : REFRESH_QUIET,
144                       pathspec, seen);
145         for (i = 0; i < specs; i++) {
146                 if (!seen[i])
147                         die("pathspec '%s' did not match any files", pathspec[i]);
148         }
149         free(seen);
152 static const char **validate_pathspec(int argc, const char **argv, const char *prefix)
154         const char **pathspec = get_pathspec(prefix, argv);
156         if (pathspec) {
157                 const char **p;
158                 for (p = pathspec; *p; p++) {
159                         if (has_symlink_leading_path(strlen(*p), *p)) {
160                                 int len = prefix ? strlen(prefix) : 0;
161                                 die("'%s' is beyond a symbolic link", *p + len);
162                         }
163                 }
164         }
166         return pathspec;
169 int interactive_add(int argc, const char **argv, const char *prefix)
171         int status, ac;
172         const char **args;
173         const char **pathspec = NULL;
175         if (argc) {
176                 pathspec = validate_pathspec(argc, argv, prefix);
177                 if (!pathspec)
178                         return -1;
179         }
181         args = xcalloc(sizeof(const char *), (argc + 4));
182         ac = 0;
183         args[ac++] = "add--interactive";
184         if (patch_interactive)
185                 args[ac++] = "--patch";
186         args[ac++] = "--";
187         if (argc) {
188                 memcpy(&(args[ac]), pathspec, sizeof(const char *) * argc);
189                 ac += argc;
190         }
191         args[ac] = NULL;
193         status = run_command_v_opt(args, RUN_GIT_CMD);
194         free(args);
195         return status;
198 static struct lock_file lock_file;
200 static const char ignore_error[] =
201 "The following paths are ignored by one of your .gitignore files:\n";
203 static int verbose = 0, show_only = 0, ignored_too = 0, refresh_only = 0;
204 static int ignore_add_errors, addremove;
206 static struct option builtin_add_options[] = {
207         OPT__DRY_RUN(&show_only),
208         OPT__VERBOSE(&verbose),
209         OPT_GROUP(""),
210         OPT_BOOLEAN('i', "interactive", &add_interactive, "interactive picking"),
211         OPT_BOOLEAN('p', "patch", &patch_interactive, "interactive patching"),
212         OPT_BOOLEAN('f', "force", &ignored_too, "allow adding otherwise ignored files"),
213         OPT_BOOLEAN('u', "update", &take_worktree_changes, "update tracked files"),
214         OPT_BOOLEAN('A', "all", &addremove, "add all, noticing removal of tracked files"),
215         OPT_BOOLEAN( 0 , "refresh", &refresh_only, "don't add, only refresh the index"),
216         OPT_BOOLEAN( 0 , "ignore-errors", &ignore_add_errors, "just skip files which cannot be added because of errors"),
217         OPT_END(),
218 };
220 static int add_config(const char *var, const char *value, void *cb)
222         if (!strcasecmp(var, "add.ignore-errors")) {
223                 ignore_add_errors = git_config_bool(var, value);
224                 return 0;
225         }
226         return git_default_config(var, value, cb);
229 static int add_files(struct dir_struct *dir, int flags)
231         int i, exit_status = 0;
233         if (dir->ignored_nr) {
234                 fprintf(stderr, ignore_error);
235                 for (i = 0; i < dir->ignored_nr; i++)
236                         fprintf(stderr, "%s\n", dir->ignored[i]->name);
237                 fprintf(stderr, "Use -f if you really want to add them.\n");
238                 die("no files added");
239         }
241         for (i = 0; i < dir->nr; i++)
242                 if (add_file_to_cache(dir->entries[i]->name, flags)) {
243                         if (!ignore_add_errors)
244                                 die("adding files failed");
245                         exit_status = 1;
246                 }
247         return exit_status;
250 int cmd_add(int argc, const char **argv, const char *prefix)
252         int exit_status = 0;
253         int newfd;
254         const char **pathspec;
255         struct dir_struct dir;
256         int flags;
257         int add_new_files;
258         int require_pathspec;
260         argc = parse_options(argc, argv, builtin_add_options,
261                           builtin_add_usage, 0);
262         if (patch_interactive)
263                 add_interactive = 1;
264         if (add_interactive)
265                 exit(interactive_add(argc, argv, prefix));
267         git_config(add_config, NULL);
269         if (addremove && take_worktree_changes)
270                 die("-A and -u are mutually incompatible");
271         if (addremove && !argc) {
272                 static const char *here[2] = { ".", NULL };
273                 argc = 1;
274                 argv = here;
275         }
277         add_new_files = !take_worktree_changes && !refresh_only;
278         require_pathspec = !take_worktree_changes;
280         newfd = hold_locked_index(&lock_file, 1);
282         flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
283                  (show_only ? ADD_CACHE_PRETEND : 0) |
284                  (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0));
286         if (require_pathspec && argc == 0) {
287                 fprintf(stderr, "Nothing specified, nothing added.\n");
288                 fprintf(stderr, "Maybe you wanted to say 'git add .'?\n");
289                 return 0;
290         }
291         pathspec = validate_pathspec(argc, argv, prefix);
293         /*
294          * If we are adding new files, we need to scan the working
295          * tree to find the ones that match pathspecs; this needs
296          * to be done before we read the index.
297          */
298         if (add_new_files)
299                 fill_directory(&dir, pathspec, ignored_too);
301         if (read_cache() < 0)
302                 die("index file corrupt");
304         if (refresh_only) {
305                 refresh(verbose, pathspec);
306                 goto finish;
307         }
309         if (take_worktree_changes || addremove)
310                 exit_status |= add_files_to_cache(prefix, pathspec, flags);
312         if (add_new_files)
313                 exit_status |= add_files(&dir, flags);
315  finish:
316         if (active_cache_changed) {
317                 if (write_cache(newfd, active_cache, active_nr) ||
318                     commit_locked_index(&lock_file))
319                         die("Unable to write new index file");
320         }
322         return exit_status;