mirror of
https://github.com/git/git.git
synced 2024-11-28 04:23:30 +08:00
134 lines
3.6 KiB
C
134 lines
3.6 KiB
C
/*
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* GIT - The information manager from hell
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*
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* Copyright (C) Linus Torvalds, 2005
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*/
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#include "cache.h"
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#include "commit.h"
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#include "tree.h"
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#include "builtin.h"
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#include "utf8.h"
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/*
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* FIXME! Share the code with "write-tree.c"
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*/
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static void check_valid(unsigned char *sha1, enum object_type expect)
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{
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enum object_type type = sha1_object_info(sha1, NULL);
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if (type < 0)
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die("%s is not a valid object", sha1_to_hex(sha1));
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if (type != expect)
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die("%s is not a valid '%s' object", sha1_to_hex(sha1),
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typename(expect));
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}
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static const char commit_tree_usage[] = "git commit-tree <sha1> [-p <sha1>]* < changelog";
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static void new_parent(struct commit *parent, struct commit_list **parents_p)
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{
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unsigned char *sha1 = parent->object.sha1;
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struct commit_list *parents;
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for (parents = *parents_p; parents; parents = parents->next) {
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if (parents->item == parent) {
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error("duplicate parent %s ignored", sha1_to_hex(sha1));
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return;
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}
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parents_p = &parents->next;
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}
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commit_list_insert(parent, parents_p);
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}
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static const char commit_utf8_warn[] =
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"Warning: commit message does not conform to UTF-8.\n"
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"You may want to amend it after fixing the message, or set the config\n"
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"variable i18n.commitencoding to the encoding your project uses.\n";
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int commit_tree(const char *msg, unsigned char *tree,
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struct commit_list *parents, unsigned char *ret,
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const char *author)
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{
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int result;
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int encoding_is_utf8;
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struct strbuf buffer;
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check_valid(tree, OBJ_TREE);
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/* Not having i18n.commitencoding is the same as having utf-8 */
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encoding_is_utf8 = is_encoding_utf8(git_commit_encoding);
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strbuf_init(&buffer, 8192); /* should avoid reallocs for the headers */
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strbuf_addf(&buffer, "tree %s\n", sha1_to_hex(tree));
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/*
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* NOTE! This ordering means that the same exact tree merged with a
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* different order of parents will be a _different_ changeset even
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* if everything else stays the same.
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*/
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while (parents) {
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struct commit_list *next = parents->next;
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strbuf_addf(&buffer, "parent %s\n",
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sha1_to_hex(parents->item->object.sha1));
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free(parents);
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parents = next;
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}
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/* Person/date information */
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if (!author)
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author = git_author_info(IDENT_ERROR_ON_NO_NAME);
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strbuf_addf(&buffer, "author %s\n", author);
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strbuf_addf(&buffer, "committer %s\n", git_committer_info(IDENT_ERROR_ON_NO_NAME));
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if (!encoding_is_utf8)
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strbuf_addf(&buffer, "encoding %s\n", git_commit_encoding);
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strbuf_addch(&buffer, '\n');
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/* And add the comment */
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strbuf_addstr(&buffer, msg);
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/* And check the encoding */
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if (encoding_is_utf8 && !is_utf8(buffer.buf))
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fprintf(stderr, commit_utf8_warn);
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result = write_sha1_file(buffer.buf, buffer.len, commit_type, ret);
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strbuf_release(&buffer);
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return result;
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}
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int cmd_commit_tree(int argc, const char **argv, const char *prefix)
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{
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int i;
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struct commit_list *parents = NULL;
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unsigned char tree_sha1[20];
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unsigned char commit_sha1[20];
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struct strbuf buffer = STRBUF_INIT;
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git_config(git_default_config, NULL);
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if (argc < 2 || !strcmp(argv[1], "-h"))
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usage(commit_tree_usage);
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if (get_sha1(argv[1], tree_sha1))
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die("Not a valid object name %s", argv[1]);
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for (i = 2; i < argc; i += 2) {
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unsigned char sha1[20];
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const char *a, *b;
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a = argv[i]; b = argv[i+1];
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if (!b || strcmp(a, "-p"))
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usage(commit_tree_usage);
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if (get_sha1(b, sha1))
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die("Not a valid object name %s", b);
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check_valid(sha1, OBJ_COMMIT);
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new_parent(lookup_commit(sha1), &parents);
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}
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if (strbuf_read(&buffer, 0, 0) < 0)
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die_errno("git commit-tree: failed to read");
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if (!commit_tree(buffer.buf, tree_sha1, parents, commit_sha1, NULL)) {
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printf("%s\n", sha1_to_hex(commit_sha1));
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return 0;
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}
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else
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return 1;
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}
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