Andrew's git - gitweb.git/blob

   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 "diffcore.h"
  15#include "revision.h"
  16
  17static const char * const builtin_add_usage[] = {
  18        "git add [options] [--] <filepattern>...",
  19        NULL
  20};
  21static int patch_interactive, add_interactive, edit_interactive;
  22static int take_worktree_changes;
  23
  24struct update_callback_data
  25{
  26        int flags;
  27        int add_errors;
  28};
  29
  30static void update_callback(struct diff_queue_struct *q,
  31                            struct diff_options *opt, void *cbdata)
  32{
  33        int i;
  34        struct update_callback_data *data = cbdata;
  35
  36        for (i = 0; i < q->nr; i++) {
  37                struct diff_filepair *p = q->queue[i];
  38                const char *path = p->one->path;
  39                switch (p->status) {
  40                default:
  41                        die("unexpected diff status %c", p->status);
  42                case DIFF_STATUS_UNMERGED:
  43                        /*
  44                         * ADD_CACHE_IGNORE_REMOVAL is unset if "git
  45                         * add -u" is calling us, In such a case, a
  46                         * missing work tree file needs to be removed
  47                         * if there is an unmerged entry at stage #2,
  48                         * but such a diff record is followed by
  49                         * another with DIFF_STATUS_DELETED (and if
  50                         * there is no stage #2, we won't see DELETED
  51                         * nor MODIFIED).  We can simply continue
  52                         * either way.
  53                         */
  54                        if (!(data->flags & ADD_CACHE_IGNORE_REMOVAL))
  55                                continue;
  56                        /*
  57                         * Otherwise, it is "git add path" is asking
  58                         * to explicitly add it; we fall through.  A
  59                         * missing work tree file is an error and is
  60                         * caught by add_file_to_index() in such a
  61                         * case.
  62                         */
  63                case DIFF_STATUS_MODIFIED:
  64                case DIFF_STATUS_TYPE_CHANGED:
  65                        if (add_file_to_index(&the_index, path, data->flags)) {
  66                                if (!(data->flags & ADD_CACHE_IGNORE_ERRORS))
  67                                        die("updating files failed");
  68                                data->add_errors++;
  69                        }
  70                        break;
  71                case DIFF_STATUS_DELETED:
  72                        if (data->flags & ADD_CACHE_IGNORE_REMOVAL)
  73                                break;
  74                        if (!(data->flags & ADD_CACHE_PRETEND))
  75                                remove_file_from_index(&the_index, path);
  76                        if (data->flags & (ADD_CACHE_PRETEND|ADD_CACHE_VERBOSE))
  77                                printf("remove '%s'\n", path);
  78                        break;
  79                }
  80        }
  81}
  82
  83int add_files_to_cache(const char *prefix, const char **pathspec, int flags)
  84{
  85        struct update_callback_data data;
  86        struct rev_info rev;
  87        init_revisions(&rev, prefix);
  88        setup_revisions(0, NULL, &rev, NULL);
  89        rev.prune_data = pathspec;
  90        rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
  91        rev.diffopt.format_callback = update_callback;
  92        data.flags = flags;
  93        data.add_errors = 0;
  94        rev.diffopt.format_callback_data = &data;
  95        run_diff_files(&rev, DIFF_RACY_IS_MODIFIED);
  96        return !!data.add_errors;
  97}
  98
  99static void fill_pathspec_matches(const char **pathspec, char *seen, int specs)
 100{
 101        int num_unmatched = 0, i;
 102
 103        /*
 104         * Since we are walking the index as if we were walking the directory,
 105         * we have to mark the matched pathspec as seen; otherwise we will
 106         * mistakenly think that the user gave a pathspec that did not match
 107         * anything.
 108         */
 109        for (i = 0; i < specs; i++)
 110                if (!seen[i])
 111                        num_unmatched++;
 112        if (!num_unmatched)
 113                return;
 114        for (i = 0; i < active_nr; i++) {
 115                struct cache_entry *ce = active_cache[i];
 116                match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen);
 117        }
 118}
 119
 120static char *find_used_pathspec(const char **pathspec)
 121{
 122        char *seen;
 123        int i;
 124
 125        for (i = 0; pathspec[i];  i++)
 126                ; /* just counting */
 127        seen = xcalloc(i, 1);
 128        fill_pathspec_matches(pathspec, seen, i);
 129        return seen;
 130}
 131
 132static char *prune_directory(struct dir_struct *dir, const char **pathspec, int prefix)
 133{
 134        char *seen;
 135        int i, specs;
 136        struct dir_entry **src, **dst;
 137
 138        for (specs = 0; pathspec[specs];  specs++)
 139                /* nothing */;
 140        seen = xcalloc(specs, 1);
 141
 142        src = dst = dir->entries;
 143        i = dir->nr;
 144        while (--i >= 0) {
 145                struct dir_entry *entry = *src++;
 146                if (match_pathspec(pathspec, entry->name, entry->len,
 147                                   prefix, seen))
 148                        *dst++ = entry;
 149        }
 150        dir->nr = dst - dir->entries;
 151        fill_pathspec_matches(pathspec, seen, specs);
 152        return seen;
 153}
 154
 155static void treat_gitlinks(const char **pathspec)
 156{
 157        int i;
 158
 159        if (!pathspec || !*pathspec)
 160                return;
 161
 162        for (i = 0; i < active_nr; i++) {
 163                struct cache_entry *ce = active_cache[i];
 164                if (S_ISGITLINK(ce->ce_mode)) {
 165                        int len = ce_namelen(ce), j;
 166                        for (j = 0; pathspec[j]; j++) {
 167                                int len2 = strlen(pathspec[j]);
 168                                if (len2 <= len || pathspec[j][len] != '/' ||
 169                                    memcmp(ce->name, pathspec[j], len))
 170                                        continue;
 171                                if (len2 == len + 1)
 172                                        /* strip trailing slash */
 173                                        pathspec[j] = xstrndup(ce->name, len);
 174                                else
 175                                        die ("Path '%s' is in submodule '%.*s'",
 176                                                pathspec[j], len, ce->name);
 177                        }
 178                }
 179        }
 180}
 181
 182static void refresh(int verbose, const char **pathspec)
 183{
 184        char *seen;
 185        int i, specs;
 186
 187        for (specs = 0; pathspec[specs];  specs++)
 188                /* nothing */;
 189        seen = xcalloc(specs, 1);
 190        refresh_index(&the_index, verbose ? REFRESH_IN_PORCELAIN : REFRESH_QUIET,
 191                      pathspec, seen, "Unstaged changes after refreshing the index:");
 192        for (i = 0; i < specs; i++) {
 193                if (!seen[i])
 194                        die("pathspec '%s' did not match any files", pathspec[i]);
 195        }
 196        free(seen);
 197}
 198
 199static const char **validate_pathspec(int argc, const char **argv, const char *prefix)
 200{
 201        const char **pathspec = get_pathspec(prefix, argv);
 202
 203        if (pathspec) {
 204                const char **p;
 205                for (p = pathspec; *p; p++) {
 206                        if (has_symlink_leading_path(*p, strlen(*p))) {
 207                                int len = prefix ? strlen(prefix) : 0;
 208                                die("'%s' is beyond a symbolic link", *p + len);
 209                        }
 210                }
 211        }
 212
 213        return pathspec;
 214}
 215
 216int run_add_interactive(const char *revision, const char *patch_mode,
 217                        const char **pathspec)
 218{
 219        int status, ac, pc = 0;
 220        const char **args;
 221
 222        if (pathspec)
 223                while (pathspec[pc])
 224                        pc++;
 225
 226        args = xcalloc(sizeof(const char *), (pc + 5));
 227        ac = 0;
 228        args[ac++] = "add--interactive";
 229        if (patch_mode)
 230                args[ac++] = patch_mode;
 231        if (revision)
 232                args[ac++] = revision;
 233        args[ac++] = "--";
 234        if (pc) {
 235                memcpy(&(args[ac]), pathspec, sizeof(const char *) * pc);
 236                ac += pc;
 237        }
 238        args[ac] = NULL;
 239
 240        status = run_command_v_opt(args, RUN_GIT_CMD);
 241        free(args);
 242        return status;
 243}
 244
 245int interactive_add(int argc, const char **argv, const char *prefix)
 246{
 247        const char **pathspec = NULL;
 248
 249        if (argc) {
 250                pathspec = validate_pathspec(argc, argv, prefix);
 251                if (!pathspec)
 252                        return -1;
 253        }
 254
 255        return run_add_interactive(NULL,
 256                                   patch_interactive ? "--patch" : NULL,
 257                                   pathspec);
 258}
 259
 260static int edit_patch(int argc, const char **argv, const char *prefix)
 261{
 262        char *file = xstrdup(git_path("ADD_EDIT.patch"));
 263        const char *apply_argv[] = { "apply", "--recount", "--cached",
 264                NULL, NULL };
 265        struct child_process child;
 266        struct rev_info rev;
 267        int out;
 268        struct stat st;
 269
 270        apply_argv[3] = file;
 271
 272        git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
 273
 274        if (read_cache() < 0)
 275                die ("Could not read the index");
 276
 277        init_revisions(&rev, prefix);
 278        rev.diffopt.context = 7;
 279
 280        argc = setup_revisions(argc, argv, &rev, NULL);
 281        rev.diffopt.output_format = DIFF_FORMAT_PATCH;
 282        out = open(file, O_CREAT | O_WRONLY, 0644);
 283        if (out < 0)
 284                die ("Could not open '%s' for writing.", file);
 285        rev.diffopt.file = xfdopen(out, "w");
 286        rev.diffopt.close_file = 1;
 287        if (run_diff_files(&rev, 0))
 288                die ("Could not write patch");
 289
 290        launch_editor(file, NULL, NULL);
 291
 292        if (stat(file, &st))
 293                die_errno("Could not stat '%s'", file);
 294        if (!st.st_size)
 295                die("Empty patch. Aborted.");
 296
 297        memset(&child, 0, sizeof(child));
 298        child.git_cmd = 1;
 299        child.argv = apply_argv;
 300        if (run_command(&child))
 301                die ("Could not apply '%s'", file);
 302
 303        unlink(file);
 304        return 0;
 305}
 306
 307static struct lock_file lock_file;
 308
 309static const char ignore_error[] =
 310"The following paths are ignored by one of your .gitignore files:\n";
 311
 312static int verbose = 0, show_only = 0, ignored_too = 0, refresh_only = 0;
 313static int ignore_add_errors, addremove, intent_to_add;
 314
 315static struct option builtin_add_options[] = {
 316        OPT__DRY_RUN(&show_only),
 317        OPT__VERBOSE(&verbose),
 318        OPT_GROUP(""),
 319        OPT_BOOLEAN('i', "interactive", &add_interactive, "interactive picking"),
 320        OPT_BOOLEAN('p', "patch", &patch_interactive, "interactive patching"),
 321        OPT_BOOLEAN('e', "edit", &edit_interactive, "edit current diff and apply"),
 322        OPT_BOOLEAN('f', "force", &ignored_too, "allow adding otherwise ignored files"),
 323        OPT_BOOLEAN('u', "update", &take_worktree_changes, "update tracked files"),
 324        OPT_BOOLEAN('N', "intent-to-add", &intent_to_add, "record only the fact that the path will be added later"),
 325        OPT_BOOLEAN('A', "all", &addremove, "add all, noticing removal of tracked files"),
 326        OPT_BOOLEAN( 0 , "refresh", &refresh_only, "don't add, only refresh the index"),
 327        OPT_BOOLEAN( 0 , "ignore-errors", &ignore_add_errors, "just skip files which cannot be added because of errors"),
 328        OPT_END(),
 329};
 330
 331static int add_config(const char *var, const char *value, void *cb)
 332{
 333        if (!strcasecmp(var, "add.ignore-errors")) {
 334                ignore_add_errors = git_config_bool(var, value);
 335                return 0;
 336        }
 337        return git_default_config(var, value, cb);
 338}
 339
 340static int add_files(struct dir_struct *dir, int flags)
 341{
 342        int i, exit_status = 0;
 343
 344        if (dir->ignored_nr) {
 345                fprintf(stderr, ignore_error);
 346                for (i = 0; i < dir->ignored_nr; i++)
 347                        fprintf(stderr, "%s\n", dir->ignored[i]->name);
 348                fprintf(stderr, "Use -f if you really want to add them.\n");
 349                die("no files added");
 350        }
 351
 352        for (i = 0; i < dir->nr; i++)
 353                if (add_file_to_cache(dir->entries[i]->name, flags)) {
 354                        if (!ignore_add_errors)
 355                                die("adding files failed");
 356                        exit_status = 1;
 357                }
 358        return exit_status;
 359}
 360
 361int cmd_add(int argc, const char **argv, const char *prefix)
 362{
 363        int exit_status = 0;
 364        int newfd;
 365        const char **pathspec;
 366        struct dir_struct dir;
 367        int flags;
 368        int add_new_files;
 369        int require_pathspec;
 370        char *seen = NULL;
 371
 372        git_config(add_config, NULL);
 373
 374        argc = parse_options(argc, argv, prefix, builtin_add_options,
 375                          builtin_add_usage, PARSE_OPT_KEEP_ARGV0);
 376        if (patch_interactive)
 377                add_interactive = 1;
 378        if (add_interactive)
 379                exit(interactive_add(argc - 1, argv + 1, prefix));
 380
 381        if (edit_interactive)
 382                return(edit_patch(argc, argv, prefix));
 383        argc--;
 384        argv++;
 385
 386        if (addremove && take_worktree_changes)
 387                die("-A and -u are mutually incompatible");
 388        if ((addremove || take_worktree_changes) && !argc) {
 389                static const char *here[2] = { ".", NULL };
 390                argc = 1;
 391                argv = here;
 392        }
 393
 394        add_new_files = !take_worktree_changes && !refresh_only;
 395        require_pathspec = !take_worktree_changes;
 396
 397        newfd = hold_locked_index(&lock_file, 1);
 398
 399        flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
 400                 (show_only ? ADD_CACHE_PRETEND : 0) |
 401                 (intent_to_add ? ADD_CACHE_INTENT : 0) |
 402                 (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
 403                 (!(addremove || take_worktree_changes)
 404                  ? ADD_CACHE_IGNORE_REMOVAL : 0));
 405
 406        if (require_pathspec && argc == 0) {
 407                fprintf(stderr, "Nothing specified, nothing added.\n");
 408                fprintf(stderr, "Maybe you wanted to say 'git add .'?\n");
 409                return 0;
 410        }
 411        pathspec = validate_pathspec(argc, argv, prefix);
 412
 413        if (read_cache() < 0)
 414                die("index file corrupt");
 415        treat_gitlinks(pathspec);
 416
 417        if (add_new_files) {
 418                int baselen;
 419
 420                /* Set up the default git porcelain excludes */
 421                memset(&dir, 0, sizeof(dir));
 422                if (!ignored_too) {
 423                        dir.flags |= DIR_COLLECT_IGNORED;
 424                        setup_standard_excludes(&dir);
 425                }
 426
 427                /* This picks up the paths that are not tracked */
 428                baselen = fill_directory(&dir, pathspec);
 429                if (pathspec)
 430                        seen = prune_directory(&dir, pathspec, baselen);
 431        }
 432
 433        if (refresh_only) {
 434                refresh(verbose, pathspec);
 435                goto finish;
 436        }
 437
 438        if (pathspec) {
 439                int i;
 440                if (!seen)
 441                        seen = find_used_pathspec(pathspec);
 442                for (i = 0; pathspec[i]; i++) {
 443                        if (!seen[i] && pathspec[i][0]
 444                            && !file_exists(pathspec[i]))
 445                                die("pathspec '%s' did not match any files",
 446                                    pathspec[i]);
 447                }
 448                free(seen);
 449        }
 450
 451        exit_status |= add_files_to_cache(prefix, pathspec, flags);
 452
 453        if (add_new_files)
 454                exit_status |= add_files(&dir, flags);
 455
 456 finish:
 457        if (active_cache_changed) {
 458                if (write_cache(newfd, active_cache, active_nr) ||
 459                    commit_locked_index(&lock_file))
 460                        die("Unable to write new index file");
 461        }
 462
 463        return exit_status;
 464}