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
  11 static const char write_tree_usage[] =
  12 "git-write-tree [--missing-ok] [--prefix=<prefix>/]";
  13
  14 int cmd_write_tree(int argc, const char **argv, const char *unused_prefix)
  15 {
  16         int missing_ok = 0, ret;
  17         const char *prefix = NULL;
  18         unsigned char sha1[20];
  19         const char *me = "git-write-tree";
  20
  21         git_config(git_default_config);
  22         while (1 < argc) {
  23                 const char *arg = argv[1];
  24                 if (!strcmp(arg, "--missing-ok"))
  25                         missing_ok = 1;
  26                 else if (!prefixcmp(arg, "--prefix="))
  27                         prefix = arg + 9;
  28                 else
  29                         usage(write_tree_usage);
  30                 argc--; argv++;
  31         }
  32
  33         if (argc > 2)
  34                 die("too many options");
  35
  36         ret = write_cache_as_tree(sha1, missing_ok, prefix);
  37         switch (ret) {
  38         case 0:
  39                 printf("%s\n", sha1_to_hex(sha1));
  40                 break;
  41         case WRITE_TREE_UNREADABLE_INDEX:
  42                 die("%s: error reading the index", me);
  43                 break;
  44         case WRITE_TREE_UNMERGED_INDEX:
  45                 die("%s: error building trees; the index is unmerged?", me);
  46                 break;
  47         case WRITE_TREE_PREFIX_ERROR:
  48                 die("%s: prefix %s not found", me, prefix);
  49                 break;
  50         }
  51         return ret;
  52 }