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 "revision.h"
  15
  16 static const char * const builtin_add_usage[] = {
  17         "git add [options] [--] <filepattern>...",
  18         NULL
  19 };
  20 static int patch_interactive, add_interactive, edit_interactive;
  21 static int take_worktree_changes;
  22
  23 static void fill_pathspec_matches(const char **pathspec, char *seen, int specs)
  24 {
  25         int num_unmatched = 0, i;
  26
  27         /*
  28          * Since we are walking the index as if we were walking the directory,
  29          * we have to mark the matched pathspec as seen; otherwise we will
  30          * mistakenly think that the user gave a pathspec that did not match
  31          * anything.
  32          */
  33         for (i = 0; i < specs; i++)
  34                 if (!seen[i])
  35                         num_unmatched++;
  36         if (!num_unmatched)
  37                 return;
  38         for (i = 0; i < active_nr; i++) {
  39                 struct cache_entry *ce = active_cache[i];
  40                 match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen);
  41         }
  42 }
  43
  44 static void prune_directory(struct dir_struct *dir, const char **pathspec, int prefix)
  45 {
  46         char *seen;
  47         int i, specs;
  48         struct dir_entry **src, **dst;
  49
  50         for (specs = 0; pathspec[specs];  specs++)
  51                 /* nothing */;
  52         seen = xcalloc(specs, 1);
  53
  54         src = dst = dir->entries;
  55         i = dir->nr;
  56         while (--i >= 0) {
  57                 struct dir_entry *entry = *src++;
  58                 if (match_pathspec(pathspec, entry->name, entry->len,
  59                                    prefix, seen))
  60                         *dst++ = entry;
  61         }
  62         dir->nr = dst - dir->entries;
  63         fill_pathspec_matches(pathspec, seen, specs);
  64
  65         for (i = 0; i < specs; i++) {
  66                 if (!seen[i] && pathspec[i][0] && !file_exists(pathspec[i]))
  67                         die("pathspec '%s' did not match any files",
  68                                         pathspec[i]);
  69         }
  70         free(seen);
  71 }
  72
  73 static void treat_gitlinks(const char **pathspec)
  74 {
  75         int i;
  76
  77         if (!pathspec || !*pathspec)
  78                 return;
  79
  80         for (i = 0; i < active_nr; i++) {
  81                 struct cache_entry *ce = active_cache[i];
  82                 if (S_ISGITLINK(ce->ce_mode)) {
  83                         int len = ce_namelen(ce), j;
  84                         for (j = 0; pathspec[j]; j++) {
  85                                 int len2 = strlen(pathspec[j]);
  86                                 if (len2 <= len || pathspec[j][len] != '/' ||
  87                                     memcmp(ce->name, pathspec[j], len))
  88                                         continue;
  89                                 if (len2 == len + 1)
  90                                         /* strip trailing slash */
  91                                         pathspec[j] = xstrndup(ce->name, len);
  92                                 else
  93                                         die ("Path '%s' is in submodule '%.*s'",
  94                                                 pathspec[j], len, ce->name);
  95                         }
  96                 }
  97         }
  98 }
  99
 100 static void refresh(int verbose, const char **pathspec)
 101 {
 102         char *seen;
 103         int i, specs;
 104
 105         for (specs = 0; pathspec[specs];  specs++)
 106                 /* nothing */;
 107         seen = xcalloc(specs, 1);
 108         refresh_index(&the_index, verbose ? REFRESH_IN_PORCELAIN : REFRESH_QUIET,
 109                       pathspec, seen, "Unstaged changes after refreshing the index:");
 110         for (i = 0; i < specs; i++) {
 111                 if (!seen[i])
 112                         die("pathspec '%s' did not match any files", pathspec[i]);
 113         }
 114         free(seen);
 115 }
 116
 117 static const char **validate_pathspec(int argc, const char **argv, const char *prefix)
 118 {
 119         const char **pathspec = get_pathspec(prefix, argv);
 120
 121         if (pathspec) {
 122                 const char **p;
 123                 for (p = pathspec; *p; p++) {
 124                         if (has_symlink_leading_path(*p, strlen(*p))) {
 125                                 int len = prefix ? strlen(prefix) : 0;
 126                                 die("'%s' is beyond a symbolic link", *p + len);
 127                         }
 128                 }
 129         }
 130
 131         return pathspec;
 132 }
 133
 134 int interactive_add(int argc, const char **argv, const char *prefix)
 135 {
 136         int status, ac;
 137         const char **args;
 138         const char **pathspec = NULL;
 139
 140         if (argc) {
 141                 pathspec = validate_pathspec(argc, argv, prefix);
 142                 if (!pathspec)
 143                         return -1;
 144         }
 145
 146         args = xcalloc(sizeof(const char *), (argc + 4));
 147         ac = 0;
 148         args[ac++] = "add--interactive";
 149         if (patch_interactive)
 150                 args[ac++] = "--patch";
 151         args[ac++] = "--";
 152         if (argc) {
 153                 memcpy(&(args[ac]), pathspec, sizeof(const char *) * argc);
 154                 ac += argc;
 155         }
 156         args[ac] = NULL;
 157
 158         status = run_command_v_opt(args, RUN_GIT_CMD);
 159         free(args);
 160         return status;
 161 }
 162
 163 static int edit_patch(int argc, const char **argv, const char *prefix)
 164 {
 165         char *file = xstrdup(git_path("ADD_EDIT.patch"));
 166         const char *apply_argv[] = { "apply", "--recount", "--cached",
 167                 file, NULL };
 168         struct child_process child;
 169         struct rev_info rev;
 170         int out;
 171         struct stat st;
 172
 173         git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
 174
 175         if (read_cache() < 0)
 176                 die ("Could not read the index");
 177
 178         init_revisions(&rev, prefix);
 179         rev.diffopt.context = 7;
 180
 181         argc = setup_revisions(argc, argv, &rev, NULL);
 182         rev.diffopt.output_format = DIFF_FORMAT_PATCH;
 183         out = open(file, O_CREAT | O_WRONLY, 0644);
 184         if (out < 0)
 185                 die ("Could not open '%s' for writing.", file);
 186         rev.diffopt.file = fdopen(out, "w");
 187         rev.diffopt.close_file = 1;
 188         if (run_diff_files(&rev, 0))
 189                 die ("Could not write patch");
 190
 191         launch_editor(file, NULL, NULL);
 192
 193         if (stat(file, &st))
 194                 die_errno("Could not stat '%s'", file);
 195         if (!st.st_size)
 196                 die("Empty patch. Aborted.");
 197
 198         memset(&child, 0, sizeof(child));
 199         child.git_cmd = 1;
 200         child.argv = apply_argv;
 201         if (run_command(&child))
 202                 die ("Could not apply '%s'", file);
 203
 204         unlink(file);
 205         return 0;
 206 }
 207
 208 static struct lock_file lock_file;
 209
 210 static const char ignore_error[] =
 211 "The following paths are ignored by one of your .gitignore files:\n";
 212
 213 static int verbose = 0, show_only = 0, ignored_too = 0, refresh_only = 0;
 214 static int ignore_add_errors, addremove, intent_to_add;
 215
 216 static struct option builtin_add_options[] = {
 217         OPT__DRY_RUN(&show_only),
 218         OPT__VERBOSE(&verbose),
 219         OPT_GROUP(""),
 220         OPT_BOOLEAN('i', "interactive", &add_interactive, "interactive picking"),
 221         OPT_BOOLEAN('p', "patch", &patch_interactive, "interactive patching"),
 222         OPT_BOOLEAN('e', "edit", &edit_interactive, "edit current diff and apply"),
 223         OPT_BOOLEAN('f', "force", &ignored_too, "allow adding otherwise ignored files"),
 224         OPT_BOOLEAN('u', "update", &take_worktree_changes, "update tracked files"),
 225         OPT_BOOLEAN('N', "intent-to-add", &intent_to_add, "record only the fact that the path will be added later"),
 226         OPT_BOOLEAN('A', "all", &addremove, "add all, noticing removal of tracked files"),
 227         OPT_BOOLEAN( 0 , "refresh", &refresh_only, "don't add, only refresh the index"),
 228         OPT_BOOLEAN( 0 , "ignore-errors", &ignore_add_errors, "just skip files which cannot be added because of errors"),
 229         OPT_END(),
 230 };
 231
 232 static int add_config(const char *var, const char *value, void *cb)
 233 {
 234         if (!strcasecmp(var, "add.ignore-errors")) {
 235                 ignore_add_errors = git_config_bool(var, value);
 236                 return 0;
 237         }
 238         return git_default_config(var, value, cb);
 239 }
 240
 241 static int add_files(struct dir_struct *dir, int flags)
 242 {
 243         int i, exit_status = 0;
 244
 245         if (dir->ignored_nr) {
 246                 fprintf(stderr, ignore_error);
 247                 for (i = 0; i < dir->ignored_nr; i++)
 248                         fprintf(stderr, "%s\n", dir->ignored[i]->name);
 249                 fprintf(stderr, "Use -f if you really want to add them.\n");
 250                 die("no files added");
 251         }
 252
 253         for (i = 0; i < dir->nr; i++)
 254                 if (add_file_to_cache(dir->entries[i]->name, flags)) {
 255                         if (!ignore_add_errors)
 256                                 die("adding files failed");
 257                         exit_status = 1;
 258                 }
 259         return exit_status;
 260 }
 261
 262 int cmd_add(int argc, const char **argv, const char *prefix)
 263 {
 264         int exit_status = 0;
 265         int newfd;
 266         const char **pathspec;
 267         struct dir_struct dir;
 268         int flags;
 269         int add_new_files;
 270         int require_pathspec;
 271
 272         git_config(add_config, NULL);
 273
 274         argc = parse_options(argc, argv, prefix, builtin_add_options,
 275                           builtin_add_usage, PARSE_OPT_KEEP_ARGV0);
 276         if (patch_interactive)
 277                 add_interactive = 1;
 278         if (add_interactive)
 279                 exit(interactive_add(argc - 1, argv + 1, prefix));
 280
 281         if (edit_interactive)
 282                 return(edit_patch(argc, argv, prefix));
 283         argc--;
 284         argv++;
 285
 286         if (addremove && take_worktree_changes)
 287                 die("-A and -u are mutually incompatible");
 288         if ((addremove || take_worktree_changes) && !argc) {
 289                 static const char *here[2] = { ".", NULL };
 290                 argc = 1;
 291                 argv = here;
 292         }
 293
 294         add_new_files = !take_worktree_changes && !refresh_only;
 295         require_pathspec = !take_worktree_changes;
 296
 297         newfd = hold_locked_index(&lock_file, 1);
 298
 299         flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
 300                  (show_only ? ADD_CACHE_PRETEND : 0) |
 301                  (intent_to_add ? ADD_CACHE_INTENT : 0) |
 302                  (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
 303                  (!(addremove || take_worktree_changes)
 304                   ? ADD_CACHE_IGNORE_REMOVAL : 0));
 305
 306         if (require_pathspec && argc == 0) {
 307                 fprintf(stderr, "Nothing specified, nothing added.\n");
 308                 fprintf(stderr, "Maybe you wanted to say 'git add .'?\n");
 309                 return 0;
 310         }
 311         pathspec = validate_pathspec(argc, argv, prefix);
 312
 313         if (read_cache() < 0)
 314                 die("index file corrupt");
 315         treat_gitlinks(pathspec);
 316
 317         if (add_new_files) {
 318                 int baselen;
 319
 320                 /* Set up the default git porcelain excludes */
 321                 memset(&dir, 0, sizeof(dir));
 322                 if (!ignored_too) {
 323                         dir.flags |= DIR_COLLECT_IGNORED;
 324                         setup_standard_excludes(&dir);
 325                 }
 326
 327                 /* This picks up the paths that are not tracked */
 328                 baselen = fill_directory(&dir, pathspec);
 329                 if (pathspec)
 330                         prune_directory(&dir, pathspec, baselen);
 331         }
 332
 333         if (refresh_only) {
 334                 refresh(verbose, pathspec);
 335                 goto finish;
 336         }
 337
 338         exit_status |= add_files_to_cache(prefix, pathspec, flags);
 339
 340         if (add_new_files)
 341                 exit_status |= add_files(&dir, flags);
 342
 343  finish:
 344         if (active_cache_changed) {
 345                 if (write_cache(newfd, active_cache, active_nr) ||
 346                     commit_locked_index(&lock_file))
 347                         die("Unable to write new index file");
 348         }
 349
 350         return exit_status;
 351 }