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 "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        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
 153static 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
 160int 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
 189static struct lock_file lock_file;
 190
 191static const char ignore_error[] =
 192"The following paths are ignored by one of your .gitignore files:\n";
 193
 194static int verbose = 0, show_only = 0, ignored_too = 0, refresh_only = 0;
 195static int ignore_add_errors;
 196
 197static 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', "force", &ignored_too, "allow adding otherwise ignored files"),
 204        OPT_BOOLEAN('u', "update", &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
 210static int add_config(const char *var, const char *value, void *cb)
 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, cb);
 217}
 218
 219int 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, NULL);
 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}