Andrew's git / gitweb.git / builtin/add.c
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builtin / add.con commit merge-file: clamp exit code to maximum 127 (e34f802)
   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 "pathspec.h"
  10#include "exec_cmd.h"
  11#include "cache-tree.h"
  12#include "run-command.h"
  13#include "parse-options.h"
  14#include "diff.h"
  15#include "diffcore.h"
  16#include "revision.h"
  17#include "bulk-checkin.h"
  18#include "argv-array.h"
  19
  20static const char * const builtin_add_usage[] = {
  21        N_("git add [options] [--] <pathspec>..."),
  22        NULL
  23};
  24static int patch_interactive, add_interactive, edit_interactive;
  25static int take_worktree_changes;
  26
  27struct update_callback_data {
  28        int flags;
  29        int add_errors;
  30};
  31
  32static int fix_unmerged_status(struct diff_filepair *p,
  33                               struct update_callback_data *data)
  34{
  35        if (p->status != DIFF_STATUS_UNMERGED)
  36                return p->status;
  37        if (!(data->flags & ADD_CACHE_IGNORE_REMOVAL) && !p->two->mode)
  38                /*
  39                 * This is not an explicit add request, and the
  40                 * path is missing from the working tree (deleted)
  41                 */
  42                return DIFF_STATUS_DELETED;
  43        else
  44                /*
  45                 * Either an explicit add request, or path exists
  46                 * in the working tree.  An attempt to explicitly
  47                 * add a path that does not exist in the working tree
  48                 * will be caught as an error by the caller immediately.
  49                 */
  50                return DIFF_STATUS_MODIFIED;
  51}
  52
  53static void update_callback(struct diff_queue_struct *q,
  54                            struct diff_options *opt, void *cbdata)
  55{
  56        int i;
  57        struct update_callback_data *data = cbdata;
  58
  59        for (i = 0; i < q->nr; i++) {
  60                struct diff_filepair *p = q->queue[i];
  61                const char *path = p->one->path;
  62                switch (fix_unmerged_status(p, data)) {
  63                default:
  64                        die(_("unexpected diff status %c"), p->status);
  65                case DIFF_STATUS_MODIFIED:
  66                case DIFF_STATUS_TYPE_CHANGED:
  67                        if (add_file_to_index(&the_index, path, data->flags)) {
  68                                if (!(data->flags & ADD_CACHE_IGNORE_ERRORS))
  69                                        die(_("updating files failed"));
  70                                data->add_errors++;
  71                        }
  72                        break;
  73                case DIFF_STATUS_DELETED:
  74                        if (data->flags & ADD_CACHE_IGNORE_REMOVAL)
  75                                break;
  76                        if (!(data->flags & ADD_CACHE_PRETEND))
  77                                remove_file_from_index(&the_index, path);
  78                        if (data->flags & (ADD_CACHE_PRETEND|ADD_CACHE_VERBOSE))
  79                                printf(_("remove '%s'\n"), path);
  80                        break;
  81                }
  82        }
  83}
  84
  85int add_files_to_cache(const char *prefix,
  86                       const struct pathspec *pathspec, int flags)
  87{
  88        struct update_callback_data data;
  89        struct rev_info rev;
  90
  91        memset(&data, 0, sizeof(data));
  92        data.flags = flags;
  93
  94        init_revisions(&rev, prefix);
  95        setup_revisions(0, NULL, &rev, NULL);
  96        if (pathspec)
  97                copy_pathspec(&rev.prune_data, pathspec);
  98        rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
  99        rev.diffopt.format_callback = update_callback;
 100        rev.diffopt.format_callback_data = &data;
 101        rev.max_count = 0; /* do not compare unmerged paths with stage #2 */
 102        run_diff_files(&rev, DIFF_RACY_IS_MODIFIED);
 103        return !!data.add_errors;
 104}
 105
 106static char *prune_directory(struct dir_struct *dir, struct pathspec *pathspec, int prefix)
 107{
 108        char *seen;
 109        int i;
 110        struct dir_entry **src, **dst;
 111
 112        seen = xcalloc(pathspec->nr, 1);
 113
 114        src = dst = dir->entries;
 115        i = dir->nr;
 116        while (--i >= 0) {
 117                struct dir_entry *entry = *src++;
 118                if (dir_path_match(entry, pathspec, prefix, seen))
 119                        *dst++ = entry;
 120        }
 121        dir->nr = dst - dir->entries;
 122        add_pathspec_matches_against_index(pathspec, seen);
 123        return seen;
 124}
 125
 126static void refresh(int verbose, const struct pathspec *pathspec)
 127{
 128        char *seen;
 129        int i;
 130
 131        seen = xcalloc(pathspec->nr, 1);
 132        refresh_index(&the_index, verbose ? REFRESH_IN_PORCELAIN : REFRESH_QUIET,
 133                      pathspec, seen, _("Unstaged changes after refreshing the index:"));
 134        for (i = 0; i < pathspec->nr; i++) {
 135                if (!seen[i])
 136                        die(_("pathspec '%s' did not match any files"),
 137                            pathspec->items[i].match);
 138        }
 139        free(seen);
 140}
 141
 142int run_add_interactive(const char *revision, const char *patch_mode,
 143                        const struct pathspec *pathspec)
 144{
 145        int status, i;
 146        struct argv_array argv = ARGV_ARRAY_INIT;
 147
 148        argv_array_push(&argv, "add--interactive");
 149        if (patch_mode)
 150                argv_array_push(&argv, patch_mode);
 151        if (revision)
 152                argv_array_push(&argv, revision);
 153        argv_array_push(&argv, "--");
 154        for (i = 0; i < pathspec->nr; i++)
 155                /* pass original pathspec, to be re-parsed */
 156                argv_array_push(&argv, pathspec->items[i].original);
 157
 158        status = run_command_v_opt(argv.argv, RUN_GIT_CMD);
 159        argv_array_clear(&argv);
 160        return status;
 161}
 162
 163int interactive_add(int argc, const char **argv, const char *prefix, int patch)
 164{
 165        struct pathspec pathspec;
 166
 167        parse_pathspec(&pathspec, 0,
 168                       PATHSPEC_PREFER_FULL |
 169                       PATHSPEC_SYMLINK_LEADING_PATH |
 170                       PATHSPEC_PREFIX_ORIGIN,
 171                       prefix, argv);
 172
 173        return run_add_interactive(NULL,
 174                                   patch ? "--patch" : NULL,
 175                                   &pathspec);
 176}
 177
 178static int edit_patch(int argc, const char **argv, const char *prefix)
 179{
 180        char *file = git_pathdup("ADD_EDIT.patch");
 181        const char *apply_argv[] = { "apply", "--recount", "--cached",
 182                NULL, NULL };
 183        struct child_process child;
 184        struct rev_info rev;
 185        int out;
 186        struct stat st;
 187
 188        apply_argv[3] = file;
 189
 190        git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
 191
 192        if (read_cache() < 0)
 193                die(_("Could not read the index"));
 194
 195        init_revisions(&rev, prefix);
 196        rev.diffopt.context = 7;
 197
 198        argc = setup_revisions(argc, argv, &rev, NULL);
 199        rev.diffopt.output_format = DIFF_FORMAT_PATCH;
 200        rev.diffopt.use_color = 0;
 201        DIFF_OPT_SET(&rev.diffopt, IGNORE_DIRTY_SUBMODULES);
 202        out = open(file, O_CREAT | O_WRONLY, 0666);
 203        if (out < 0)
 204                die(_("Could not open '%s' for writing."), file);
 205        rev.diffopt.file = xfdopen(out, "w");
 206        rev.diffopt.close_file = 1;
 207        if (run_diff_files(&rev, 0))
 208                die(_("Could not write patch"));
 209
 210        launch_editor(file, NULL, NULL);
 211
 212        if (stat(file, &st))
 213                die_errno(_("Could not stat '%s'"), file);
 214        if (!st.st_size)
 215                die(_("Empty patch. Aborted."));
 216
 217        memset(&child, 0, sizeof(child));
 218        child.git_cmd = 1;
 219        child.argv = apply_argv;
 220        if (run_command(&child))
 221                die(_("Could not apply '%s'"), file);
 222
 223        unlink(file);
 224        free(file);
 225        return 0;
 226}
 227
 228static struct lock_file lock_file;
 229
 230static const char ignore_error[] =
 231N_("The following paths are ignored by one of your .gitignore files:\n");
 232
 233static int verbose, show_only, ignored_too, refresh_only;
 234static int ignore_add_errors, intent_to_add, ignore_missing;
 235
 236#define ADDREMOVE_DEFAULT 1
 237static int addremove = ADDREMOVE_DEFAULT;
 238static int addremove_explicit = -1; /* unspecified */
 239
 240static int ignore_removal_cb(const struct option *opt, const char *arg, int unset)
 241{
 242        /* if we are told to ignore, we are not adding removals */
 243        *(int *)opt->value = !unset ? 0 : 1;
 244        return 0;
 245}
 246
 247static struct option builtin_add_options[] = {
 248        OPT__DRY_RUN(&show_only, N_("dry run")),
 249        OPT__VERBOSE(&verbose, N_("be verbose")),
 250        OPT_GROUP(""),
 251        OPT_BOOL('i', "interactive", &add_interactive, N_("interactive picking")),
 252        OPT_BOOL('p', "patch", &patch_interactive, N_("select hunks interactively")),
 253        OPT_BOOL('e', "edit", &edit_interactive, N_("edit current diff and apply")),
 254        OPT__FORCE(&ignored_too, N_("allow adding otherwise ignored files")),
 255        OPT_BOOL('u', "update", &take_worktree_changes, N_("update tracked files")),
 256        OPT_BOOL('N', "intent-to-add", &intent_to_add, N_("record only the fact that the path will be added later")),
 257        OPT_BOOL('A', "all", &addremove_explicit, N_("add changes from all tracked and untracked files")),
 258        { OPTION_CALLBACK, 0, "ignore-removal", &addremove_explicit,
 259          NULL /* takes no arguments */,
 260          N_("ignore paths removed in the working tree (same as --no-all)"),
 261          PARSE_OPT_NOARG, ignore_removal_cb },
 262        OPT_BOOL( 0 , "refresh", &refresh_only, N_("don't add, only refresh the index")),
 263        OPT_BOOL( 0 , "ignore-errors", &ignore_add_errors, N_("just skip files which cannot be added because of errors")),
 264        OPT_BOOL( 0 , "ignore-missing", &ignore_missing, N_("check if - even missing - files are ignored in dry run")),
 265        OPT_END(),
 266};
 267
 268static int add_config(const char *var, const char *value, void *cb)
 269{
 270        if (!strcmp(var, "add.ignoreerrors") ||
 271            !strcmp(var, "add.ignore-errors")) {
 272                ignore_add_errors = git_config_bool(var, value);
 273                return 0;
 274        }
 275        return git_default_config(var, value, cb);
 276}
 277
 278static int add_files(struct dir_struct *dir, int flags)
 279{
 280        int i, exit_status = 0;
 281
 282        if (dir->ignored_nr) {
 283                fprintf(stderr, _(ignore_error));
 284                for (i = 0; i < dir->ignored_nr; i++)
 285                        fprintf(stderr, "%s\n", dir->ignored[i]->name);
 286                fprintf(stderr, _("Use -f if you really want to add them.\n"));
 287                die(_("no files added"));
 288        }
 289
 290        for (i = 0; i < dir->nr; i++)
 291                if (add_file_to_cache(dir->entries[i]->name, flags)) {
 292                        if (!ignore_add_errors)
 293                                die(_("adding files failed"));
 294                        exit_status = 1;
 295                }
 296        return exit_status;
 297}
 298
 299int cmd_add(int argc, const char **argv, const char *prefix)
 300{
 301        int exit_status = 0;
 302        int newfd;
 303        struct pathspec pathspec;
 304        struct dir_struct dir;
 305        int flags;
 306        int add_new_files;
 307        int require_pathspec;
 308        char *seen = NULL;
 309
 310        git_config(add_config, NULL);
 311
 312        argc = parse_options(argc, argv, prefix, builtin_add_options,
 313                          builtin_add_usage, PARSE_OPT_KEEP_ARGV0);
 314        if (patch_interactive)
 315                add_interactive = 1;
 316        if (add_interactive)
 317                exit(interactive_add(argc - 1, argv + 1, prefix, patch_interactive));
 318
 319        if (edit_interactive)
 320                return(edit_patch(argc, argv, prefix));
 321        argc--;
 322        argv++;
 323
 324        if (0 <= addremove_explicit)
 325                addremove = addremove_explicit;
 326        else if (take_worktree_changes && ADDREMOVE_DEFAULT)
 327                addremove = 0; /* "-u" was given but not "-A" */
 328
 329        if (addremove && take_worktree_changes)
 330                die(_("-A and -u are mutually incompatible"));
 331
 332        if (!take_worktree_changes && addremove_explicit < 0 && argc)
 333                /* Turn "git add pathspec..." to "git add -A pathspec..." */
 334                addremove = 1;
 335
 336        if (!show_only && ignore_missing)
 337                die(_("Option --ignore-missing can only be used together with --dry-run"));
 338
 339        if ((0 < addremove_explicit || take_worktree_changes) && !argc) {
 340                static const char *whole[2] = { ":/", NULL };
 341                argc = 1;
 342                argv = whole;
 343        }
 344
 345        add_new_files = !take_worktree_changes && !refresh_only;
 346        require_pathspec = !take_worktree_changes;
 347
 348        newfd = hold_locked_index(&lock_file, 1);
 349
 350        flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
 351                 (show_only ? ADD_CACHE_PRETEND : 0) |
 352                 (intent_to_add ? ADD_CACHE_INTENT : 0) |
 353                 (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
 354                 (!(addremove || take_worktree_changes)
 355                  ? ADD_CACHE_IGNORE_REMOVAL : 0));
 356
 357        if (require_pathspec && argc == 0) {
 358                fprintf(stderr, _("Nothing specified, nothing added.\n"));
 359                fprintf(stderr, _("Maybe you wanted to say 'git add .'?\n"));
 360                return 0;
 361        }
 362
 363        if (read_cache() < 0)
 364                die(_("index file corrupt"));
 365
 366        /*
 367         * Check the "pathspec '%s' did not match any files" block
 368         * below before enabling new magic.
 369         */
 370        parse_pathspec(&pathspec, 0,
 371                       PATHSPEC_PREFER_FULL |
 372                       PATHSPEC_SYMLINK_LEADING_PATH |
 373                       PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE,
 374                       prefix, argv);
 375
 376        if (add_new_files) {
 377                int baselen;
 378                struct pathspec empty_pathspec;
 379
 380                /* Set up the default git porcelain excludes */
 381                memset(&dir, 0, sizeof(dir));
 382                if (!ignored_too) {
 383                        dir.flags |= DIR_COLLECT_IGNORED;
 384                        setup_standard_excludes(&dir);
 385                }
 386
 387                memset(&empty_pathspec, 0, sizeof(empty_pathspec));
 388                /* This picks up the paths that are not tracked */
 389                baselen = fill_directory(&dir, &pathspec);
 390                if (pathspec.nr)
 391                        seen = prune_directory(&dir, &pathspec, baselen);
 392        }
 393
 394        if (refresh_only) {
 395                refresh(verbose, &pathspec);
 396                goto finish;
 397        }
 398
 399        if (pathspec.nr) {
 400                int i;
 401
 402                if (!seen)
 403                        seen = find_pathspecs_matching_against_index(&pathspec);
 404
 405                /*
 406                 * file_exists() assumes exact match
 407                 */
 408                GUARD_PATHSPEC(&pathspec,
 409                               PATHSPEC_FROMTOP |
 410                               PATHSPEC_LITERAL |
 411                               PATHSPEC_GLOB |
 412                               PATHSPEC_ICASE |
 413                               PATHSPEC_EXCLUDE);
 414
 415                for (i = 0; i < pathspec.nr; i++) {
 416                        const char *path = pathspec.items[i].match;
 417                        if (pathspec.items[i].magic & PATHSPEC_EXCLUDE)
 418                                continue;
 419                        if (!seen[i] && path[0] &&
 420                            ((pathspec.items[i].magic &
 421                              (PATHSPEC_GLOB | PATHSPEC_ICASE)) ||
 422                             !file_exists(path))) {
 423                                if (ignore_missing) {
 424                                        int dtype = DT_UNKNOWN;
 425                                        if (is_excluded(&dir, path, &dtype))
 426                                                dir_add_ignored(&dir, path, pathspec.items[i].len);
 427                                } else
 428                                        die(_("pathspec '%s' did not match any files"),
 429                                            pathspec.items[i].original);
 430                        }
 431                }
 432                free(seen);
 433        }
 434
 435        plug_bulk_checkin();
 436
 437        exit_status |= add_files_to_cache(prefix, &pathspec, flags);
 438
 439        if (add_new_files)
 440                exit_status |= add_files(&dir, flags);
 441
 442        unplug_bulk_checkin();
 443
 444finish:
 445        if (active_cache_changed) {
 446                if (write_cache(newfd, active_cache, active_nr) ||
 447                    commit_locked_index(&lock_file))
 448                        die(_("Unable to write new index file"));
 449        }
 450
 451        return exit_status;
 452}