builtin-write-tree.c

   1 /*
   2  * GIT - The information manager from hell
   3  *
   4  * Copyright (C) Linus Torvalds, 2005
   5  */
   6 #include "builtin.h"
   7 #include "cache.h"
   8 #include "tree.h"
   9 #include "cache-tree.h"
  10 #include "parse-options.h"
  11
  12 static const char * const write_tree_usage[] = {
  13         "git write-tree [--missing-ok] [--prefix=<prefix>/]",
  14         NULL
  15 };
  16
  17 int cmd_write_tree(int argc, const char **argv, const char *unused_prefix)
  18 {
  19         int flags = 0, ret;
  20         const char *prefix = NULL;
  21         unsigned char sha1[20];
  22         const char *me = "git-write-tree";
  23         struct option write_tree_options[] = {
  24                 OPT_BIT(0, "missing-ok", &flags, "allow missing objects",
  25                         WRITE_TREE_MISSING_OK),
  26                 { OPTION_STRING, 0, "prefix", &prefix, "<prefix>/",
  27                   "write tree object for a subdirectory <prefix>" ,
  28                   PARSE_OPT_LITERAL_ARGHELP },
  29                 { OPTION_BIT, 0, "ignore-cache-tree", &flags, NULL,
  30                   "only useful for debugging",
  31                   PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, NULL,
  32                   WRITE_TREE_IGNORE_CACHE_TREE },
  33                 OPT_END()
  34         };
  35
  36         git_config(git_default_config, NULL);
  37         argc = parse_options(argc, argv, unused_prefix, write_tree_options,
  38                              write_tree_usage, 0);
  39
  40         ret = write_cache_as_tree(sha1, flags, prefix);
  41         switch (ret) {
  42         case 0:
  43                 printf("%s\n", sha1_to_hex(sha1));
  44                 break;
  45         case WRITE_TREE_UNREADABLE_INDEX:
  46                 die("%s: error reading the index", me);
  47                 break;
  48         case WRITE_TREE_UNMERGED_INDEX:
  49                 die("%s: error building trees", me);
  50                 break;
  51         case WRITE_TREE_PREFIX_ERROR:
  52                 die("%s: prefix %s not found", me, prefix);
  53                 break;
  54         }
  55         return ret;
  56 }