2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
12 #define BLOCKING (1ul << 14)
15 * FIXME! Share the code with "write-tree.c"
17 static void init_buffer(char **bufp, unsigned int *sizep)
19 char *buf = xmalloc(BLOCKING);
24 static void add_buffer(char **bufp, unsigned int *sizep, const char *fmt, ...)
29 unsigned long alloc, size, newsize;
33 len = vsnprintf(one_line, sizeof(one_line), fmt, args);
36 newsize = size + len + 1;
37 alloc = (size + 32767) & ~32767;
39 if (newsize > alloc) {
40 alloc = (newsize + 32767) & ~32767;
41 buf = xrealloc(buf, alloc);
45 memcpy(buf + size, one_line, len);
48 static void check_valid(unsigned char *sha1, const char *expect)
52 if (sha1_object_info(sha1, type, NULL))
53 die("%s is not a valid object", sha1_to_hex(sha1));
54 if (expect && strcmp(type, expect))
55 die("%s is not a valid '%s' object", sha1_to_hex(sha1),
60 * Having more than two parents is not strange at all, and this is
61 * how multi-way merges are represented.
63 #define MAXPARENT (16)
64 static unsigned char parent_sha1[MAXPARENT][20];
66 static const char commit_tree_usage[] = "git-commit-tree <sha1> [-p <sha1>]* < changelog";
68 static int new_parent(int idx)
71 unsigned char *sha1 = parent_sha1[idx];
72 for (i = 0; i < idx; i++) {
73 if (!hashcmp(parent_sha1[i], sha1)) {
74 error("duplicate parent %s ignored", sha1_to_hex(sha1));
81 static const char commit_utf8_warn[] =
82 "Warning: commit message does not conform to UTF-8.\n"
83 "You may want to amend it after fixing the message, or set the config\n"
84 "variable i18n.commitencoding to the encoding your project uses.\n";
86 int cmd_commit_tree(int argc, const char **argv, const char *prefix)
90 unsigned char tree_sha1[20];
91 unsigned char commit_sha1[20];
98 git_config(git_default_config);
101 usage(commit_tree_usage);
102 if (get_sha1(argv[1], tree_sha1))
103 die("Not a valid object name %s", argv[1]);
105 check_valid(tree_sha1, tree_type);
106 for (i = 2; i < argc; i += 2) {
108 a = argv[i]; b = argv[i+1];
109 if (!b || strcmp(a, "-p"))
110 usage(commit_tree_usage);
112 if (parents >= MAXPARENT)
113 die("Too many parents (%d max)", MAXPARENT);
114 if (get_sha1(b, parent_sha1[parents]))
115 die("Not a valid object name %s", b);
116 check_valid(parent_sha1[parents], commit_type);
117 if (new_parent(parents))
121 /* Not having i18n.commitencoding is the same as having utf-8 */
122 encoding_is_utf8 = is_encoding_utf8(git_commit_encoding);
124 init_buffer(&buffer, &size);
125 add_buffer(&buffer, &size, "tree %s\n", sha1_to_hex(tree_sha1));
128 * NOTE! This ordering means that the same exact tree merged with a
129 * different order of parents will be a _different_ changeset even
130 * if everything else stays the same.
132 for (i = 0; i < parents; i++)
133 add_buffer(&buffer, &size, "parent %s\n", sha1_to_hex(parent_sha1[i]));
135 /* Person/date information */
136 add_buffer(&buffer, &size, "author %s\n", git_author_info(1));
137 add_buffer(&buffer, &size, "committer %s\n", git_committer_info(1));
138 if (!encoding_is_utf8)
139 add_buffer(&buffer, &size,
140 "encoding %s\n", git_commit_encoding);
141 add_buffer(&buffer, &size, "\n");
143 /* And add the comment */
144 while (fgets(comment, sizeof(comment), stdin) != NULL)
145 add_buffer(&buffer, &size, "%s", comment);
147 /* And check the encoding */
149 if (encoding_is_utf8 && !is_utf8(buffer))
150 fprintf(stderr, commit_utf8_warn);
152 if (!write_sha1_file(buffer, size, commit_type, commit_sha1)) {
153 printf("%s\n", sha1_to_hex(commit_sha1));