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"
17
18static const char * const builtin_add_usage[] = {
19 "git add [options] [--] <filepattern>...",
20 NULL
21};
22static int patch_interactive = 0, add_interactive = 0;
23static int take_worktree_changes;
24
25static 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;
30
31 for (specs = 0; pathspec[specs]; specs++)
32 /* nothing */;
33 seen = xcalloc(specs, 1);
34
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;
44
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}
52
53static void fill_directory(struct dir_struct *dir, const char **pathspec,
54 int ignored_too)
55{
56 const char *path, *base;
57 int baselen;
58
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 }
65
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);
75
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}
81
82struct update_callback_data
83{
84 int flags;
85 int add_errors;
86};
87
88static 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;
93
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 }
117}
118
119int add_files_to_cache(const char *prefix, const char **pathspec, int flags)
120{
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;
133}
134
135static void refresh(int verbose, const char **pathspec)
136{
137 char *seen;
138 int i, specs;
139
140 for (specs = 0; pathspec[specs]; specs++)
141 /* nothing */;
142 seen = xcalloc(specs, 1);
143 refresh_index(&the_index, verbose ? 0 : REFRESH_QUIET, pathspec, seen);
144 for (i = 0; i < specs; i++) {
145 if (!seen[i])
146 die("pathspec '%s' did not match any files", pathspec[i]);
147 }
148 free(seen);
149}
150
151static const char **validate_pathspec(int argc, const char **argv, const char *prefix)
152{
153 const char **pathspec = get_pathspec(prefix, argv);
154
155 return pathspec;
156}
157
158int interactive_add(int argc, const char **argv, const char *prefix)
159{
160 int status, ac;
161 const char **args;
162 const char **pathspec = NULL;
163
164 if (argc) {
165 pathspec = validate_pathspec(argc, argv, prefix);
166 if (!pathspec)
167 return -1;
168 }
169
170 args = xcalloc(sizeof(const char *), (argc + 4));
171 ac = 0;
172 args[ac++] = "add--interactive";
173 if (patch_interactive)
174 args[ac++] = "--patch";
175 args[ac++] = "--";
176 if (argc) {
177 memcpy(&(args[ac]), pathspec, sizeof(const char *) * argc);
178 ac += argc;
179 }
180 args[ac] = NULL;
181
182 status = run_command_v_opt(args, RUN_GIT_CMD);
183 free(args);
184 return status;
185}
186
187static struct lock_file lock_file;
188
189static const char ignore_error[] =
190"The following paths are ignored by one of your .gitignore files:\n";
191
192static int verbose = 0, show_only = 0, ignored_too = 0, refresh_only = 0;
193static int ignore_add_errors, addremove;
194
195static struct option builtin_add_options[] = {
196 OPT__DRY_RUN(&show_only),
197 OPT__VERBOSE(&verbose),
198 OPT_GROUP(""),
199 OPT_BOOLEAN('i', "interactive", &add_interactive, "interactive picking"),
200 OPT_BOOLEAN('p', "patch", &patch_interactive, "interactive patching"),
201 OPT_BOOLEAN('f', "force", &ignored_too, "allow adding otherwise ignored files"),
202 OPT_BOOLEAN('u', "update", &take_worktree_changes, "update tracked files"),
203 OPT_BOOLEAN('A', "all", &addremove, "add all, noticing removal of tracked files"),
204 OPT_BOOLEAN( 0 , "refresh", &refresh_only, "don't add, only refresh the index"),
205 OPT_BOOLEAN( 0 , "ignore-errors", &ignore_add_errors, "just skip files which cannot be added because of errors"),
206 OPT_END(),
207};
208
209static int add_config(const char *var, const char *value, void *cb)
210{
211 if (!strcasecmp(var, "add.ignore-errors")) {
212 ignore_add_errors = git_config_bool(var, value);
213 return 0;
214 }
215 return git_default_config(var, value, cb);
216}
217
218static int add_files(struct dir_struct *dir, int flags)
219{
220 int i, exit_status = 0;
221
222 if (dir->ignored_nr) {
223 fprintf(stderr, ignore_error);
224 for (i = 0; i < dir->ignored_nr; i++)
225 fprintf(stderr, "%s\n", dir->ignored[i]->name);
226 fprintf(stderr, "Use -f if you really want to add them.\n");
227 die("no files added");
228 }
229
230 for (i = 0; i < dir->nr; i++)
231 if (add_file_to_cache(dir->entries[i]->name, flags)) {
232 if (!ignore_add_errors)
233 die("adding files failed");
234 exit_status = 1;
235 }
236 return exit_status;
237}
238
239int cmd_add(int argc, const char **argv, const char *prefix)
240{
241 int exit_status = 0;
242 int newfd;
243 const char **pathspec;
244 struct dir_struct dir;
245 int flags;
246 int add_new_files;
247 int require_pathspec;
248
249 argc = parse_options(argc, argv, builtin_add_options,
250 builtin_add_usage, 0);
251 if (patch_interactive)
252 add_interactive = 1;
253 if (add_interactive)
254 exit(interactive_add(argc, argv, prefix));
255
256 git_config(add_config, NULL);
257
258 if (addremove && take_worktree_changes)
259 die("-A and -u are mutually incompatible");
260 if (addremove && !argc) {
261 static const char *here[2] = { ".", NULL };
262 argc = 1;
263 argv = here;
264 }
265
266 add_new_files = !take_worktree_changes && !refresh_only;
267 require_pathspec = !take_worktree_changes;
268
269 newfd = hold_locked_index(&lock_file, 1);
270
271 flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
272 (show_only ? ADD_CACHE_PRETEND : 0) |
273 (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0));
274
275 if (require_pathspec && argc == 0) {
276 fprintf(stderr, "Nothing specified, nothing added.\n");
277 fprintf(stderr, "Maybe you wanted to say 'git add .'?\n");
278 return 0;
279 }
280 pathspec = get_pathspec(prefix, argv);
281
282 /*
283 * If we are adding new files, we need to scan the working
284 * tree to find the ones that match pathspecs; this needs
285 * to be done before we read the index.
286 */
287 if (add_new_files)
288 fill_directory(&dir, pathspec, ignored_too);
289
290 if (read_cache() < 0)
291 die("index file corrupt");
292
293 if (refresh_only) {
294 refresh(verbose, pathspec);
295 goto finish;
296 }
297
298 if (take_worktree_changes || addremove)
299 exit_status |= add_files_to_cache(prefix, pathspec, flags);
300
301 if (add_new_files)
302 exit_status |= add_files(&dir, flags);
303
304 finish:
305 if (active_cache_changed) {
306 if (write_cache(newfd, active_cache, active_nr) ||
307 commit_locked_index(&lock_file))
308 die("Unable to write new index file");
309 }
310
311 return exit_status;
312}