Andrew's git / gitweb.git / builtin-add.c
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builtin-add.con commit push: fix segfault for odd config (db03b55)
   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
  14static const char * const builtin_add_usage[] = {
  15        "git add [options] [--] <filepattern>...",
  16        NULL
  17};
  18static int patch_interactive, add_interactive;
  19static int take_worktree_changes;
  20
  21static void fill_pathspec_matches(const char **pathspec, char *seen, int specs)
  22{
  23        int num_unmatched = 0, i;
  24
  25        /*
  26         * Since we are walking the index as if we were walking the directory,
  27         * we have to mark the matched pathspec as seen; otherwise we will
  28         * mistakenly think that the user gave a pathspec that did not match
  29         * anything.
  30         */
  31        for (i = 0; i < specs; i++)
  32                if (!seen[i])
  33                        num_unmatched++;
  34        if (!num_unmatched)
  35                return;
  36        for (i = 0; i < active_nr; i++) {
  37                struct cache_entry *ce = active_cache[i];
  38                match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen);
  39        }
  40}
  41
  42static void prune_directory(struct dir_struct *dir, const char **pathspec, int prefix)
  43{
  44        char *seen;
  45        int i, specs;
  46        struct dir_entry **src, **dst;
  47
  48        for (specs = 0; pathspec[specs];  specs++)
  49                /* nothing */;
  50        seen = xcalloc(specs, 1);
  51
  52        src = dst = dir->entries;
  53        i = dir->nr;
  54        while (--i >= 0) {
  55                struct dir_entry *entry = *src++;
  56                if (match_pathspec(pathspec, entry->name, entry->len,
  57                                   prefix, seen))
  58                        *dst++ = entry;
  59        }
  60        dir->nr = dst - dir->entries;
  61        fill_pathspec_matches(pathspec, seen, specs);
  62
  63        for (i = 0; i < specs; i++) {
  64                if (!seen[i] && !file_exists(pathspec[i]))
  65                        die("pathspec '%s' did not match any files",
  66                                        pathspec[i]);
  67        }
  68        free(seen);
  69}
  70
  71static void treat_gitlinks(const char **pathspec)
  72{
  73        int i;
  74
  75        if (!pathspec || !*pathspec)
  76                return;
  77
  78        for (i = 0; i < active_nr; i++) {
  79                struct cache_entry *ce = active_cache[i];
  80                if (S_ISGITLINK(ce->ce_mode)) {
  81                        int len = ce_namelen(ce), j;
  82                        for (j = 0; pathspec[j]; j++) {
  83                                int len2 = strlen(pathspec[j]);
  84                                if (len2 <= len || pathspec[j][len] != '/' ||
  85                                    memcmp(ce->name, pathspec[j], len))
  86                                        continue;
  87                                if (len2 == len + 1)
  88                                        /* strip trailing slash */
  89                                        pathspec[j] = xstrndup(ce->name, len);
  90                                else
  91                                        die ("Path '%s' is in submodule '%.*s'",
  92                                                pathspec[j], len, ce->name);
  93                        }
  94                }
  95        }
  96}
  97
  98static void fill_directory(struct dir_struct *dir, const char **pathspec,
  99                int ignored_too)
 100{
 101        const char *path, *base;
 102        int baselen;
 103
 104        /* Set up the default git porcelain excludes */
 105        memset(dir, 0, sizeof(*dir));
 106        if (!ignored_too) {
 107                dir->collect_ignored = 1;
 108                setup_standard_excludes(dir);
 109        }
 110
 111        /*
 112         * Calculate common prefix for the pathspec, and
 113         * use that to optimize the directory walk
 114         */
 115        baselen = common_prefix(pathspec);
 116        path = ".";
 117        base = "";
 118        if (baselen)
 119                path = base = xmemdupz(*pathspec, baselen);
 120
 121        /* Read the directory and prune it */
 122        read_directory(dir, path, base, baselen, pathspec);
 123        if (pathspec)
 124                prune_directory(dir, pathspec, baselen);
 125}
 126
 127static void refresh(int verbose, const char **pathspec)
 128{
 129        char *seen;
 130        int i, specs;
 131
 132        for (specs = 0; pathspec[specs];  specs++)
 133                /* nothing */;
 134        seen = xcalloc(specs, 1);
 135        refresh_index(&the_index, verbose ? REFRESH_SAY_CHANGED : REFRESH_QUIET,
 136                      pathspec, seen);
 137        for (i = 0; i < specs; i++) {
 138                if (!seen[i])
 139                        die("pathspec '%s' did not match any files", pathspec[i]);
 140        }
 141        free(seen);
 142}
 143
 144static const char **validate_pathspec(int argc, const char **argv, const char *prefix)
 145{
 146        const char **pathspec = get_pathspec(prefix, argv);
 147
 148        if (pathspec) {
 149                const char **p;
 150                for (p = pathspec; *p; p++) {
 151                        if (has_symlink_leading_path(strlen(*p), *p)) {
 152                                int len = prefix ? strlen(prefix) : 0;
 153                                die("'%s' is beyond a symbolic link", *p + len);
 154                        }
 155                }
 156        }
 157
 158        return pathspec;
 159}
 160
 161int interactive_add(int argc, const char **argv, const char *prefix)
 162{
 163        int status, ac;
 164        const char **args;
 165        const char **pathspec = NULL;
 166
 167        if (argc) {
 168                pathspec = validate_pathspec(argc, argv, prefix);
 169                if (!pathspec)
 170                        return -1;
 171        }
 172
 173        args = xcalloc(sizeof(const char *), (argc + 4));
 174        ac = 0;
 175        args[ac++] = "add--interactive";
 176        if (patch_interactive)
 177                args[ac++] = "--patch";
 178        args[ac++] = "--";
 179        if (argc) {
 180                memcpy(&(args[ac]), pathspec, sizeof(const char *) * argc);
 181                ac += argc;
 182        }
 183        args[ac] = NULL;
 184
 185        status = run_command_v_opt(args, RUN_GIT_CMD);
 186        free(args);
 187        return status;
 188}
 189
 190static struct lock_file lock_file;
 191
 192static const char ignore_error[] =
 193"The following paths are ignored by one of your .gitignore files:\n";
 194
 195static int verbose = 0, show_only = 0, ignored_too = 0, refresh_only = 0;
 196static int ignore_add_errors, addremove, intent_to_add;
 197
 198static struct option builtin_add_options[] = {
 199        OPT__DRY_RUN(&show_only),
 200        OPT__VERBOSE(&verbose),
 201        OPT_GROUP(""),
 202        OPT_BOOLEAN('i', "interactive", &add_interactive, "interactive picking"),
 203        OPT_BOOLEAN('p', "patch", &patch_interactive, "interactive patching"),
 204        OPT_BOOLEAN('f', "force", &ignored_too, "allow adding otherwise ignored files"),
 205        OPT_BOOLEAN('u', "update", &take_worktree_changes, "update tracked files"),
 206        OPT_BOOLEAN('N', "intent-to-add", &intent_to_add, "record only the fact that the path will be added later"),
 207        OPT_BOOLEAN('A', "all", &addremove, "add all, noticing removal of tracked files"),
 208        OPT_BOOLEAN( 0 , "refresh", &refresh_only, "don't add, only refresh the index"),
 209        OPT_BOOLEAN( 0 , "ignore-errors", &ignore_add_errors, "just skip files which cannot be added because of errors"),
 210        OPT_END(),
 211};
 212
 213static int add_config(const char *var, const char *value, void *cb)
 214{
 215        if (!strcasecmp(var, "add.ignore-errors")) {
 216                ignore_add_errors = git_config_bool(var, value);
 217                return 0;
 218        }
 219        return git_default_config(var, value, cb);
 220}
 221
 222static int add_files(struct dir_struct *dir, int flags)
 223{
 224        int i, exit_status = 0;
 225
 226        if (dir->ignored_nr) {
 227                fprintf(stderr, ignore_error);
 228                for (i = 0; i < dir->ignored_nr; i++)
 229                        fprintf(stderr, "%s\n", dir->ignored[i]->name);
 230                fprintf(stderr, "Use -f if you really want to add them.\n");
 231                die("no files added");
 232        }
 233
 234        for (i = 0; i < dir->nr; i++)
 235                if (add_file_to_cache(dir->entries[i]->name, flags)) {
 236                        if (!ignore_add_errors)
 237                                die("adding files failed");
 238                        exit_status = 1;
 239                }
 240        return exit_status;
 241}
 242
 243int cmd_add(int argc, const char **argv, const char *prefix)
 244{
 245        int exit_status = 0;
 246        int newfd;
 247        const char **pathspec;
 248        struct dir_struct dir;
 249        int flags;
 250        int add_new_files;
 251        int require_pathspec;
 252
 253        argc = parse_options(argc, argv, builtin_add_options,
 254                          builtin_add_usage, 0);
 255        if (patch_interactive)
 256                add_interactive = 1;
 257        if (add_interactive)
 258                exit(interactive_add(argc, argv, prefix));
 259
 260        git_config(add_config, NULL);
 261
 262        if (addremove && take_worktree_changes)
 263                die("-A and -u are mutually incompatible");
 264        if ((addremove || take_worktree_changes) && !argc) {
 265                static const char *here[2] = { ".", NULL };
 266                argc = 1;
 267                argv = here;
 268        }
 269
 270        add_new_files = !take_worktree_changes && !refresh_only;
 271        require_pathspec = !take_worktree_changes;
 272
 273        newfd = hold_locked_index(&lock_file, 1);
 274
 275        flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
 276                 (show_only ? ADD_CACHE_PRETEND : 0) |
 277                 (intent_to_add ? ADD_CACHE_INTENT : 0) |
 278                 (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
 279                 (!(addremove || take_worktree_changes)
 280                  ? ADD_CACHE_IGNORE_REMOVAL : 0));
 281
 282        if (require_pathspec && argc == 0) {
 283                fprintf(stderr, "Nothing specified, nothing added.\n");
 284                fprintf(stderr, "Maybe you wanted to say 'git add .'?\n");
 285                return 0;
 286        }
 287        pathspec = validate_pathspec(argc, argv, prefix);
 288
 289        if (read_cache() < 0)
 290                die("index file corrupt");
 291        treat_gitlinks(pathspec);
 292
 293        if (add_new_files)
 294                /* This picks up the paths that are not tracked */
 295                fill_directory(&dir, pathspec, ignored_too);
 296
 297        if (refresh_only) {
 298                refresh(verbose, pathspec);
 299                goto finish;
 300        }
 301
 302        exit_status |= add_files_to_cache(prefix, pathspec, flags);
 303
 304        if (add_new_files)
 305                exit_status |= add_files(&dir, flags);
 306
 307 finish:
 308        if (active_cache_changed) {
 309                if (write_cache(newfd, active_cache, active_nr) ||
 310                    commit_locked_index(&lock_file))
 311                        die("Unable to write new index file");
 312        }
 313
 314        return exit_status;
 315}