Function fake_working_tree_commit

blame.c:188–313

* Prepare a dummy commit that represents the work tree (or staged) item. * Note that annotating work tree item never works in the reverse. */

 * Note that annotating work tree item never works in the reverse.
 */
static struct commit *fake_working_tree_commit(struct repository *r,
					       struct diff_options *opt,
					       const char *path,
					       const char *contents_from,
					       struct object_id *oid)
{
	struct commit *commit;
	struct blame_origin *origin;
	struct commit_list **parent_tail, *parent;
	struct strbuf buf = STRBUF_INIT;
	const char *ident;
	time_t now;
	int len;
	struct cache_entry *ce;
	unsigned mode;
	struct strbuf msg = STRBUF_INIT;

	repo_read_index(r);
	time(&now);
	commit = alloc_commit_node(r);
	commit->object.parsed = 1;
	commit->date = now;
	parent_tail = &commit->parents;

	parent_tail = append_parent(r, parent_tail, oid);
	append_merge_parents(r, parent_tail);
	verify_working_tree_path(r, commit, path);

	origin = make_origin(commit, path);

	if (contents_from)
		ident = fmt_ident("External file (--contents)", "external.file",
				  WANT_BLANK_IDENT, NULL, 0);
	else
		ident = fmt_ident("Not Committed Yet", "not.committed.yet",
				  WANT_BLANK_IDENT, NULL, 0);
	strbuf_addstr(&msg, "tree 0000000000000000000000000000000000000000\n");
	for (parent = commit->parents; parent; parent = parent->next)
		strbuf_addf(&msg, "parent %s\n",
			    oid_to_hex(&parent->item->object.oid));
	strbuf_addf(&msg,
		    "author %s\n"
		    "committer %s\n\n"
		    "Version of %s from %s\n",
		    ident, ident, path,
		    (!contents_from ? path :
		     (!strcmp(contents_from, "-") ? "standard input" : contents_from)));
	set_commit_buffer_from_strbuf(r, commit, &msg);

	if (!contents_from || strcmp("-", contents_from)) {
		struct stat st;
		const char *read_from;
		char *buf_ptr;
		unsigned long buf_len;

		if (contents_from) {
			if (stat(contents_from, &st) < 0)
				die_errno("Cannot stat '%s'", contents_from);