Andrew's git / gitweb.git / builtin-add.c
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builtin-add.con commit fix git commit --amend -m "new message" (fbcf118)
   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
  82static void update_callback(struct diff_queue_struct *q,
  83                            struct diff_options *opt, void *cbdata)
  84{
  85        int i, verbose;
  86
  87        verbose = *((int *)cbdata);
  88        for (i = 0; i < q->nr; i++) {
  89                struct diff_filepair *p = q->queue[i];
  90                const char *path = p->one->path;
  91                switch (p->status) {
  92                default:
  93                        die("unexpected diff status %c", p->status);
  94                case DIFF_STATUS_UNMERGED:
  95                case DIFF_STATUS_MODIFIED:
  96                case DIFF_STATUS_TYPE_CHANGED:
  97                        add_file_to_cache(path, verbose);
  98                        break;
  99                case DIFF_STATUS_DELETED:
 100                        remove_file_from_cache(path);
 101                        if (verbose)
 102                                printf("remove '%s'\n", path);
 103                        break;
 104                }
 105        }
 106}
 107
 108void add_files_to_cache(int verbose, const char *prefix, const char **pathspec)
 109{
 110        struct rev_info rev;
 111        init_revisions(&rev, prefix);
 112        setup_revisions(0, NULL, &rev, NULL);
 113        rev.prune_data = pathspec;
 114        rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
 115        rev.diffopt.format_callback = update_callback;
 116        rev.diffopt.format_callback_data = &verbose;
 117        run_diff_files(&rev, DIFF_RACY_IS_MODIFIED);
 118}
 119
 120static void refresh(int verbose, const char **pathspec)
 121{
 122        char *seen;
 123        int i, specs;
 124
 125        for (specs = 0; pathspec[specs];  specs++)
 126                /* nothing */;
 127        seen = xcalloc(specs, 1);
 128        if (read_cache() < 0)
 129                die("index file corrupt");
 130        refresh_index(&the_index, verbose ? 0 : REFRESH_QUIET, pathspec, seen);
 131        for (i = 0; i < specs; i++) {
 132                if (!seen[i])
 133                        die("pathspec '%s' did not match any files", pathspec[i]);
 134        }
 135        free(seen);
 136}
 137
 138static const char **validate_pathspec(int argc, const char **argv, const char *prefix)
 139{
 140        const char **pathspec = get_pathspec(prefix, argv);
 141
 142        return pathspec;
 143}
 144
 145int interactive_add(int argc, const char **argv, const char *prefix)
 146{
 147        int status, ac;
 148        const char **args;
 149        const char **pathspec = NULL;
 150
 151        if (argc) {
 152                pathspec = validate_pathspec(argc, argv, prefix);
 153                if (!pathspec)
 154                        return -1;
 155        }
 156
 157        args = xcalloc(sizeof(const char *), (argc + 4));
 158        ac = 0;
 159        args[ac++] = "add--interactive";
 160        if (patch_interactive)
 161                args[ac++] = "--patch";
 162        args[ac++] = "--";
 163        if (argc) {
 164                memcpy(&(args[ac]), pathspec, sizeof(const char *) * argc);
 165                ac += argc;
 166        }
 167        args[ac] = NULL;
 168
 169        status = run_command_v_opt(args, RUN_GIT_CMD);
 170        free(args);
 171        return status;
 172}
 173
 174static struct lock_file lock_file;
 175
 176static const char ignore_error[] =
 177"The following paths are ignored by one of your .gitignore files:\n";
 178
 179static int verbose = 0, show_only = 0, ignored_too = 0, refresh_only = 0;
 180
 181static struct option builtin_add_options[] = {
 182        OPT__DRY_RUN(&show_only),
 183        OPT__VERBOSE(&verbose),
 184        OPT_GROUP(""),
 185        OPT_BOOLEAN('i', "interactive", &add_interactive, "interactive picking"),
 186        OPT_BOOLEAN('p', "patch", &patch_interactive, "interactive patching"),
 187        OPT_BOOLEAN('f', NULL, &ignored_too, "allow adding otherwise ignored files"),
 188        OPT_BOOLEAN('u', NULL, &take_worktree_changes, "update tracked files"),
 189        OPT_BOOLEAN( 0 , "refresh", &refresh_only, "don't add, only refresh the index"),
 190        OPT_END(),
 191};
 192
 193int cmd_add(int argc, const char **argv, const char *prefix)
 194{
 195        int i, newfd;
 196        const char **pathspec;
 197        struct dir_struct dir;
 198
 199        argc = parse_options(argc, argv, builtin_add_options,
 200                          builtin_add_usage, 0);
 201        if (patch_interactive)
 202                add_interactive = 1;
 203        if (add_interactive)
 204                exit(interactive_add(argc, argv, prefix));
 205
 206        git_config(git_default_config);
 207
 208        newfd = hold_locked_index(&lock_file, 1);
 209
 210        if (take_worktree_changes) {
 211                const char **pathspec;
 212                if (read_cache() < 0)
 213                        die("index file corrupt");
 214                pathspec = get_pathspec(prefix, argv);
 215                add_files_to_cache(verbose, prefix, pathspec);
 216                goto finish;
 217        }
 218
 219        if (argc == 0) {
 220                fprintf(stderr, "Nothing specified, nothing added.\n");
 221                fprintf(stderr, "Maybe you wanted to say 'git add .'?\n");
 222                return 0;
 223        }
 224        pathspec = get_pathspec(prefix, argv);
 225
 226        if (refresh_only) {
 227                refresh(verbose, pathspec);
 228                goto finish;
 229        }
 230
 231        fill_directory(&dir, pathspec, ignored_too);
 232
 233        if (show_only) {
 234                const char *sep = "", *eof = "";
 235                for (i = 0; i < dir.nr; i++) {
 236                        printf("%s%s", sep, dir.entries[i]->name);
 237                        sep = " ";
 238                        eof = "\n";
 239                }
 240                fputs(eof, stdout);
 241                return 0;
 242        }
 243
 244        if (read_cache() < 0)
 245                die("index file corrupt");
 246
 247        if (dir.ignored_nr) {
 248                fprintf(stderr, ignore_error);
 249                for (i = 0; i < dir.ignored_nr; i++) {
 250                        fprintf(stderr, "%s\n", dir.ignored[i]->name);
 251                }
 252                fprintf(stderr, "Use -f if you really want to add them.\n");
 253                die("no files added");
 254        }
 255
 256        for (i = 0; i < dir.nr; i++)
 257                add_file_to_cache(dir.entries[i]->name, verbose);
 258
 259 finish:
 260        if (active_cache_changed) {
 261                if (write_cache(newfd, active_cache, active_nr) ||
 262                    close(newfd) || commit_locked_index(&lock_file))
 263                        die("Unable to write new index file");
 264        }
 265
 266        return 0;
 267}