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40d52ff77b
Until now, this has been part of the commit-tree builtin. However, it is already used by other builtins (like commit, merge, and notes), and it would be useful to access it from library code. The check_valid helper has to come along, too, but is given a more library-ish name of "assert_sha1_type". Otherwise, the code is unchanged. There are still a few rough edges for a library function, like printing the utf8 warning to stderr, but we can address those if and when they come up as inappropriate. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
66 lines
1.6 KiB
C
66 lines
1.6 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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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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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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assert_sha1_type(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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