2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
11 #define BLOCKING (1ul << 14)
14 * FIXME! Share the code with "write-tree.c"
16 static void init_buffer(char **bufp, unsigned int *sizep)
18 char *buf = xmalloc(BLOCKING);
23 static void add_buffer(char **bufp, unsigned int *sizep, const char *fmt, ...)
28 unsigned long alloc, size, newsize;
32 len = vsnprintf(one_line, sizeof(one_line), fmt, args);
36 alloc = (size + 32767) & ~32767;
38 if (newsize > alloc) {
39 alloc = (newsize + 32767) & ~32767;
40 buf = xrealloc(buf, alloc);
44 memcpy(buf + size, one_line, len);
47 static void check_valid(unsigned char *sha1, const char *expect)
51 if (sha1_object_info(sha1, type, NULL))
52 die("%s is not a valid object", sha1_to_hex(sha1));
53 if (expect && strcmp(type, expect))
54 die("%s is not a valid '%s' object", sha1_to_hex(sha1),
59 * Having more than two parents is not strange at all, and this is
60 * how multi-way merges are represented.
62 #define MAXPARENT (16)
63 static unsigned char parent_sha1[MAXPARENT][20];
65 static const char commit_tree_usage[] = "git-commit-tree <sha1> [-p <sha1>]* < changelog";
67 static int new_parent(int idx)
70 unsigned char *sha1 = parent_sha1[idx];
71 for (i = 0; i < idx; i++) {
72 if (!hashcmp(parent_sha1[i], sha1)) {
73 error("duplicate parent %s ignored", sha1_to_hex(sha1));
80 int cmd_commit_tree(int argc, const char **argv, const char *prefix)
84 unsigned char tree_sha1[20];
85 unsigned char commit_sha1[20];
91 git_config(git_default_config);
94 usage(commit_tree_usage);
95 if (get_sha1(argv[1], tree_sha1))
96 die("Not a valid object name %s", argv[1]);
98 check_valid(tree_sha1, tree_type);
99 for (i = 2; i < argc; i += 2) {
101 a = argv[i]; b = argv[i+1];
102 if (!b || strcmp(a, "-p"))
103 usage(commit_tree_usage);
105 if (parents >= MAXPARENT)
106 die("Too many parents (%d max)", MAXPARENT);
107 if (get_sha1(b, parent_sha1[parents]))
108 die("Not a valid object name %s", b);
109 check_valid(parent_sha1[parents], commit_type);
110 if (new_parent(parents))
114 init_buffer(&buffer, &size);
115 add_buffer(&buffer, &size, "tree %s\n", sha1_to_hex(tree_sha1));
118 * NOTE! This ordering means that the same exact tree merged with a
119 * different order of parents will be a _different_ changeset even
120 * if everything else stays the same.
122 for (i = 0; i < parents; i++)
123 add_buffer(&buffer, &size, "parent %s\n", sha1_to_hex(parent_sha1[i]));
125 /* Person/date information */
126 add_buffer(&buffer, &size, "author %s\n", git_author_info(1));
127 add_buffer(&buffer, &size, "committer %s\n\n", git_committer_info(1));
129 /* And add the comment */
130 while (fgets(comment, sizeof(comment), stdin) != NULL)
131 add_buffer(&buffer, &size, "%s", comment);
133 if (!write_sha1_file(buffer, size, commit_type, commit_sha1)) {
134 printf("%s\n", sha1_to_hex(commit_sha1));