Andrew's git - gitweb.git/blob - builtin/commit-tree.c

   1/*
   2 * GIT - The information manager from hell
   3 *
   4 * Copyright (C) Linus Torvalds, 2005
   5 */
   6#include "cache.h"
   7#include "commit.h"
   8#include "tree.h"
   9#include "builtin.h"
  10#include "utf8.h"
  11
  12static const char commit_tree_usage[] = "git commit-tree <sha1> [(-p <sha1>)...] < changelog";
  13
  14static void new_parent(struct commit *parent, struct commit_list **parents_p)
  15{
  16        unsigned char *sha1 = parent->object.sha1;
  17        struct commit_list *parents;
  18        for (parents = *parents_p; parents; parents = parents->next) {
  19                if (parents->item == parent) {
  20                        error("duplicate parent %s ignored", sha1_to_hex(sha1));
  21                        return;
  22                }
  23                parents_p = &parents->next;
  24        }
  25        commit_list_insert(parent, parents_p);
  26}
  27
  28int cmd_commit_tree(int argc, const char **argv, const char *prefix)
  29{
  30        int i;
  31        struct commit_list *parents = NULL;
  32        unsigned char tree_sha1[20];
  33        unsigned char commit_sha1[20];
  34        struct strbuf buffer = STRBUF_INIT;
  35
  36        git_config(git_default_config, NULL);
  37
  38        if (argc < 2 || !strcmp(argv[1], "-h"))
  39                usage(commit_tree_usage);
  40        if (get_sha1(argv[1], tree_sha1))
  41                die("Not a valid object name %s", argv[1]);
  42
  43        for (i = 2; i < argc; i += 2) {
  44                unsigned char sha1[20];
  45                const char *a, *b;
  46                a = argv[i]; b = argv[i+1];
  47                if (!b || strcmp(a, "-p"))
  48                        usage(commit_tree_usage);
  49
  50                if (get_sha1(b, sha1))
  51                        die("Not a valid object name %s", b);
  52                assert_sha1_type(sha1, OBJ_COMMIT);
  53                new_parent(lookup_commit(sha1), &parents);
  54        }
  55
  56        if (strbuf_read(&buffer, 0, 0) < 0)
  57                die_errno("git commit-tree: failed to read");
  58
  59        if (commit_tree(buffer.buf, tree_sha1, parents, commit_sha1, NULL)) {
  60                strbuf_release(&buffer);
  61                return 1;
  62        }
  63
  64        printf("%s\n", sha1_to_hex(commit_sha1));
  65        strbuf_release(&buffer);
  66        return 0;
  67}