Andrew's git / gitweb.git / builtin-add.c
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builtin-add.con commit Documentation/git-gc: explain --auto in description (08fbb13)
   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
  16static const char builtin_add_usage[] =
  17"git-add [-n] [-v] [-f] [--interactive | -i] [-u] [--refresh] [--] <filepattern>...";
  18
  19static int take_worktree_changes;
  20static const char *excludes_file;
  21
  22static void prune_directory(struct dir_struct *dir, const char **pathspec, int prefix)
  23{
  24        char *seen;
  25        int i, specs;
  26        struct dir_entry **src, **dst;
  27
  28        for (specs = 0; pathspec[specs];  specs++)
  29                /* nothing */;
  30        seen = xcalloc(specs, 1);
  31
  32        src = dst = dir->entries;
  33        i = dir->nr;
  34        while (--i >= 0) {
  35                struct dir_entry *entry = *src++;
  36                if (match_pathspec(pathspec, entry->name, entry->len,
  37                                   prefix, seen))
  38                        *dst++ = entry;
  39        }
  40        dir->nr = dst - dir->entries;
  41
  42        for (i = 0; i < specs; i++) {
  43                if (!seen[i] && !file_exists(pathspec[i]))
  44                        die("pathspec '%s' did not match any files",
  45                                        pathspec[i]);
  46        }
  47}
  48
  49static void fill_directory(struct dir_struct *dir, const char **pathspec,
  50                int ignored_too)
  51{
  52        const char *path, *base;
  53        int baselen;
  54
  55        /* Set up the default git porcelain excludes */
  56        memset(dir, 0, sizeof(*dir));
  57        if (!ignored_too) {
  58                dir->collect_ignored = 1;
  59                dir->exclude_per_dir = ".gitignore";
  60                path = git_path("info/exclude");
  61                if (!access(path, R_OK))
  62                        add_excludes_from_file(dir, path);
  63                if (excludes_file != NULL && !access(excludes_file, R_OK))
  64                        add_excludes_from_file(dir, excludes_file);
  65        }
  66
  67        /*
  68         * Calculate common prefix for the pathspec, and
  69         * use that to optimize the directory walk
  70         */
  71        baselen = common_prefix(pathspec);
  72        path = ".";
  73        base = "";
  74        if (baselen)
  75                path = base = xmemdupz(*pathspec, baselen);
  76
  77        /* Read the directory and prune it */
  78        read_directory(dir, path, base, baselen, pathspec);
  79        if (pathspec)
  80                prune_directory(dir, pathspec, baselen);
  81}
  82
  83static void update_callback(struct diff_queue_struct *q,
  84                            struct diff_options *opt, void *cbdata)
  85{
  86        int i, verbose;
  87
  88        verbose = *((int *)cbdata);
  89        for (i = 0; i < q->nr; i++) {
  90                struct diff_filepair *p = q->queue[i];
  91                const char *path = p->one->path;
  92                switch (p->status) {
  93                default:
  94                        die("unexpected diff status %c", p->status);
  95                case DIFF_STATUS_UNMERGED:
  96                case DIFF_STATUS_MODIFIED:
  97                case DIFF_STATUS_TYPE_CHANGED:
  98                        add_file_to_cache(path, verbose);
  99                        break;
 100                case DIFF_STATUS_DELETED:
 101                        remove_file_from_cache(path);
 102                        if (verbose)
 103                                printf("remove '%s'\n", path);
 104                        break;
 105                }
 106        }
 107}
 108
 109static void update(int verbose, const char *prefix, const char **files)
 110{
 111        struct rev_info rev;
 112        init_revisions(&rev, prefix);
 113        setup_revisions(0, NULL, &rev, NULL);
 114        rev.prune_data = get_pathspec(prefix, files);
 115        rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
 116        rev.diffopt.format_callback = update_callback;
 117        rev.diffopt.format_callback_data = &verbose;
 118        if (read_cache() < 0)
 119                die("index file corrupt");
 120        run_diff_files(&rev, 0);
 121}
 122
 123static void refresh(int verbose, const char **pathspec)
 124{
 125        char *seen;
 126        int i, specs;
 127
 128        for (specs = 0; pathspec[specs];  specs++)
 129                /* nothing */;
 130        seen = xcalloc(specs, 1);
 131        if (read_cache() < 0)
 132                die("index file corrupt");
 133        refresh_index(&the_index, verbose ? 0 : REFRESH_QUIET, pathspec, seen);
 134        for (i = 0; i < specs; i++) {
 135                if (!seen[i])
 136                        die("pathspec '%s' did not match any files", pathspec[i]);
 137        }
 138}
 139
 140static int git_add_config(const char *var, const char *value)
 141{
 142        if (!strcmp(var, "core.excludesfile")) {
 143                if (!value)
 144                        die("core.excludesfile without value");
 145                excludes_file = xstrdup(value);
 146                return 0;
 147        }
 148
 149        return git_default_config(var, value);
 150}
 151
 152static struct lock_file lock_file;
 153
 154static const char ignore_error[] =
 155"The following paths are ignored by one of your .gitignore files:\n";
 156
 157int cmd_add(int argc, const char **argv, const char *prefix)
 158{
 159        int i, newfd;
 160        int verbose = 0, show_only = 0, ignored_too = 0, refresh_only = 0;
 161        const char **pathspec;
 162        struct dir_struct dir;
 163        int add_interactive = 0;
 164
 165        for (i = 1; i < argc; i++) {
 166                if (!strcmp("--interactive", argv[i]) ||
 167                    !strcmp("-i", argv[i]))
 168                        add_interactive++;
 169        }
 170        if (add_interactive) {
 171                const char *args[] = { "add--interactive", NULL };
 172
 173                if (add_interactive != 1 || argc != 2)
 174                        die("add --interactive does not take any parameters");
 175                execv_git_cmd(args);
 176                exit(1);
 177        }
 178
 179        git_config(git_add_config);
 180
 181        newfd = hold_locked_index(&lock_file, 1);
 182
 183        for (i = 1; i < argc; i++) {
 184                const char *arg = argv[i];
 185
 186                if (arg[0] != '-')
 187                        break;
 188                if (!strcmp(arg, "--")) {
 189                        i++;
 190                        break;
 191                }
 192                if (!strcmp(arg, "-n")) {
 193                        show_only = 1;
 194                        continue;
 195                }
 196                if (!strcmp(arg, "-f")) {
 197                        ignored_too = 1;
 198                        continue;
 199                }
 200                if (!strcmp(arg, "-v")) {
 201                        verbose = 1;
 202                        continue;
 203                }
 204                if (!strcmp(arg, "-u")) {
 205                        take_worktree_changes = 1;
 206                        continue;
 207                }
 208                if (!strcmp(arg, "--refresh")) {
 209                        refresh_only = 1;
 210                        continue;
 211                }
 212                usage(builtin_add_usage);
 213        }
 214
 215        if (take_worktree_changes) {
 216                update(verbose, prefix, argv + i);
 217                goto finish;
 218        }
 219
 220        if (argc <= i) {
 221                fprintf(stderr, "Nothing specified, nothing added.\n");
 222                fprintf(stderr, "Maybe you wanted to say 'git add .'?\n");
 223                return 0;
 224        }
 225        pathspec = get_pathspec(prefix, argv + i);
 226
 227        if (refresh_only) {
 228                refresh(verbose, pathspec);
 229                goto finish;
 230        }
 231
 232        fill_directory(&dir, pathspec, ignored_too);
 233
 234        if (show_only) {
 235                const char *sep = "", *eof = "";
 236                for (i = 0; i < dir.nr; i++) {
 237                        printf("%s%s", sep, dir.entries[i]->name);
 238                        sep = " ";
 239                        eof = "\n";
 240                }
 241                fputs(eof, stdout);
 242                return 0;
 243        }
 244
 245        if (read_cache() < 0)
 246                die("index file corrupt");
 247
 248        if (dir.ignored_nr) {
 249                fprintf(stderr, ignore_error);
 250                for (i = 0; i < dir.ignored_nr; i++) {
 251                        fprintf(stderr, "%s\n", dir.ignored[i]->name);
 252                }
 253                fprintf(stderr, "Use -f if you really want to add them.\n");
 254                die("no files added");
 255        }
 256
 257        for (i = 0; i < dir.nr; i++)
 258                add_file_to_cache(dir.entries[i]->name, verbose);
 259
 260 finish:
 261        if (active_cache_changed) {
 262                if (write_cache(newfd, active_cache, active_nr) ||
 263                    close(newfd) || commit_locked_index(&lock_file))
 264                        die("Unable to write new index file");
 265        }
 266
 267        return 0;
 268}