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"
  17
  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;
  24
  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;
  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
  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;
  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
  82 struct update_callback_data
  83 {
  84         int flags;
  85         int add_errors;
  86 };
  87
  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;
  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
 119 int 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
 135 static 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         if (read_cache() < 0)
 144                 die("index file corrupt");
 145         refresh_index(&the_index, verbose ? 0 : REFRESH_QUIET, pathspec, seen);
 146         for (i = 0; i < specs; i++) {
 147                 if (!seen[i])
 148                         die("pathspec '%s' did not match any files", pathspec[i]);
 149         }
 150         free(seen);
 151 }
 152
 153 static const char **validate_pathspec(int argc, const char **argv, const char *prefix)
 154 {
 155         const char **pathspec = get_pathspec(prefix, argv);
 156
 157         return pathspec;
 158 }
 159
 160 int interactive_add(int argc, const char **argv, const char *prefix)
 161 {
 162         int status, ac;
 163         const char **args;
 164         const char **pathspec = NULL;
 165
 166         if (argc) {
 167                 pathspec = validate_pathspec(argc, argv, prefix);
 168                 if (!pathspec)
 169                         return -1;
 170         }
 171
 172         args = xcalloc(sizeof(const char *), (argc + 4));
 173         ac = 0;
 174         args[ac++] = "add--interactive";
 175         if (patch_interactive)
 176                 args[ac++] = "--patch";
 177         args[ac++] = "--";
 178         if (argc) {
 179                 memcpy(&(args[ac]), pathspec, sizeof(const char *) * argc);
 180                 ac += argc;
 181         }
 182         args[ac] = NULL;
 183
 184         status = run_command_v_opt(args, RUN_GIT_CMD);
 185         free(args);
 186         return status;
 187 }
 188
 189 static struct lock_file lock_file;
 190
 191 static const char ignore_error[] =
 192 "The following paths are ignored by one of your .gitignore files:\n";
 193
 194 static int verbose = 0, show_only = 0, ignored_too = 0, refresh_only = 0;
 195 static int ignore_add_errors;
 196
 197 static struct option builtin_add_options[] = {
 198         OPT__DRY_RUN(&show_only),
 199         OPT__VERBOSE(&verbose),
 200         OPT_GROUP(""),
 201         OPT_BOOLEAN('i', "interactive", &add_interactive, "interactive picking"),
 202         OPT_BOOLEAN('p', "patch", &patch_interactive, "interactive patching"),
 203         OPT_BOOLEAN('f', NULL, &ignored_too, "allow adding otherwise ignored files"),
 204         OPT_BOOLEAN('u', NULL, &take_worktree_changes, "update tracked files"),
 205         OPT_BOOLEAN( 0 , "refresh", &refresh_only, "don't add, only refresh the index"),
 206         OPT_BOOLEAN( 0 , "ignore-errors", &ignore_add_errors, "just skip files which cannot be added because of errors"),
 207         OPT_END(),
 208 };
 209
 210 static int add_config(const char *var, const char *value)
 211 {
 212         if (!strcasecmp(var, "add.ignore-errors")) {
 213                 ignore_add_errors = git_config_bool(var, value);
 214                 return 0;
 215         }
 216         return git_default_config(var, value);
 217 }
 218
 219 int cmd_add(int argc, const char **argv, const char *prefix)
 220 {
 221         int exit_status = 0;
 222         int i, newfd;
 223         const char **pathspec;
 224         struct dir_struct dir;
 225         int flags;
 226
 227         argc = parse_options(argc, argv, builtin_add_options,
 228                           builtin_add_usage, 0);
 229         if (patch_interactive)
 230                 add_interactive = 1;
 231         if (add_interactive)
 232                 exit(interactive_add(argc, argv, prefix));
 233
 234         git_config(add_config);
 235
 236         newfd = hold_locked_index(&lock_file, 1);
 237
 238         flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
 239                  (show_only ? ADD_CACHE_PRETEND : 0) |
 240                  (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0));
 241
 242         if (take_worktree_changes) {
 243                 const char **pathspec;
 244                 if (read_cache() < 0)
 245                         die("index file corrupt");
 246                 pathspec = get_pathspec(prefix, argv);
 247                 exit_status = add_files_to_cache(prefix, pathspec, flags);
 248                 goto finish;
 249         }
 250
 251         if (argc == 0) {
 252                 fprintf(stderr, "Nothing specified, nothing added.\n");
 253                 fprintf(stderr, "Maybe you wanted to say 'git add .'?\n");
 254                 return 0;
 255         }
 256         pathspec = get_pathspec(prefix, argv);
 257
 258         if (refresh_only) {
 259                 refresh(verbose, pathspec);
 260                 goto finish;
 261         }
 262
 263         fill_directory(&dir, pathspec, ignored_too);
 264
 265         if (read_cache() < 0)
 266                 die("index file corrupt");
 267
 268         if (dir.ignored_nr) {
 269                 fprintf(stderr, ignore_error);
 270                 for (i = 0; i < dir.ignored_nr; i++) {
 271                         fprintf(stderr, "%s\n", dir.ignored[i]->name);
 272                 }
 273                 fprintf(stderr, "Use -f if you really want to add them.\n");
 274                 die("no files added");
 275         }
 276
 277         for (i = 0; i < dir.nr; i++)
 278                 if (add_file_to_cache(dir.entries[i]->name, flags)) {
 279                         if (!ignore_add_errors)
 280                                 die("adding files failed");
 281                         exit_status = 1;
 282                 }
 283
 284  finish:
 285         if (active_cache_changed) {
 286                 if (write_cache(newfd, active_cache, active_nr) ||
 287                     commit_locked_index(&lock_file))
 288                         die("Unable to write new index file");
 289         }
 290
 291         return exit_status;
 292 }