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 flags = 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, NULL);
  22         while (1 < argc) {
  23                 const char *arg = argv[1];
  24                 if (!strcmp(arg, "--missing-ok"))
  25                         flags |= WRITE_TREE_MISSING_OK;
  26                 else if (!prefixcmp(arg, "--prefix="))
  27                         prefix = arg + 9;
  28                 else if (!prefixcmp(arg, "--ignore-cache-tree"))
  29                         /*
  30                          * This is only useful for debugging, so I
  31                          * do not bother documenting it.
  32                          */
  33                         flags |= WRITE_TREE_IGNORE_CACHE_TREE;
  34                 else
  35                         usage(write_tree_usage);
  36                 argc--; argv++;
  37         }
  38
  39         if (argc > 2)
  40                 die("too many options");
  41
  42         ret = write_cache_as_tree(sha1, flags, prefix);
  43         switch (ret) {
  44         case 0:
  45                 printf("%s\n", sha1_to_hex(sha1));
  46                 break;
  47         case WRITE_TREE_UNREADABLE_INDEX:
  48                 die("%s: error reading the index", me);
  49                 break;
  50         case WRITE_TREE_UNMERGED_INDEX:
  51                 die("%s: error building trees", me);
  52                 break;
  53         case WRITE_TREE_PREFIX_ERROR:
  54                 die("%s: prefix %s not found", me, prefix);
  55                 break;
  56         }
  57         return ret;
  58 }