builtin/write-tree.c

   1 /*
   2  * GIT - The information manager from hell
   3  *
   4  * Copyright (C) Linus Torvalds, 2005
   5  */
   6 #define USE_THE_INDEX_VARIABLE
   7 #include "builtin.h"
   8 #include "config.h"
   9 #include "environment.h"
  10 #include "gettext.h"
  11 #include "hex.h"
  12 #include "tree.h"
  13 #include "cache-tree.h"
  14 #include "parse-options.h"
  15 #include "repository.h"
  16
  17 static const char * const write_tree_usage[] = {
  18         N_("git write-tree [--missing-ok] [--prefix=<prefix>/]"),
  19         NULL
  20 };
  21
  22 int cmd_write_tree(int argc, const char **argv, const char *cmd_prefix)
  23 {
  24         int flags = 0, ret;
  25         const char *tree_prefix = NULL;
  26         struct object_id oid;
  27         const char *me = "git-write-tree";
  28         struct option write_tree_options[] = {
  29                 OPT_BIT(0, "missing-ok", &flags, N_("allow missing objects"),
  30                         WRITE_TREE_MISSING_OK),
  31                 OPT_STRING(0, "prefix", &tree_prefix, N_("<prefix>/"),
  32                            N_("write tree object for a subdirectory <prefix>")),
  33                 { OPTION_BIT, 0, "ignore-cache-tree", &flags, NULL,
  34                   N_("only useful for debugging"),
  35                   PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, NULL,
  36                   WRITE_TREE_IGNORE_CACHE_TREE },
  37                 OPT_END()
  38         };
  39
  40         git_config(git_default_config, NULL);
  41         argc = parse_options(argc, argv, cmd_prefix, write_tree_options,
  42                              write_tree_usage, 0);
  43
  44         prepare_repo_settings(the_repository);
  45         the_repository->settings.command_requires_full_index = 0;
  46
  47         ret = write_index_as_tree(&oid, &the_index, get_index_file(), flags,
  48                                   tree_prefix);
  49         switch (ret) {
  50         case 0:
  51                 printf("%s\n", oid_to_hex(&oid));
  52                 break;
  53         case WRITE_TREE_UNREADABLE_INDEX:
  54                 die("%s: error reading the index", me);
  55                 break;
  56         case WRITE_TREE_UNMERGED_INDEX:
  57                 die("%s: error building trees", me);
  58                 break;
  59         case WRITE_TREE_PREFIX_ERROR:
  60                 die("%s: prefix %s not found", me, tree_prefix);
  61                 break;
  62         }
  63         return ret;
  64 }