Function ident_to_worktree

convert.c:1167–1249

}

static int ident_to_worktree(const char *src, size_t len,
			     struct strbuf *buf, int ident)
{
	struct object_id oid;
	char *to_free = NULL;
	const char *dollar, *spc;
	int cnt;

	if (!ident)
		return 0;

	cnt = count_ident(src, len);
	if (!cnt)
		return 0;

	/* are we "faking" in place editing ? */
	if (src == buf->buf)
		to_free = strbuf_detach(buf, NULL);
	hash_object_file(the_hash_algo, src, len, OBJ_BLOB, &oid);

	strbuf_grow(buf, len + cnt * (the_hash_algo->hexsz + 3));
	for (;;) {
		/* step 1: run to the next '$' */
		dollar = memchr(src, '$', len);
		if (!dollar)
			break;
		strbuf_add(buf, src, dollar + 1 - src);
		len -= dollar + 1 - src;
		src  = dollar + 1;

		/* step 2: does it looks like a bit like Id:xxx$ or Id$ ? */
		if (len < 3 || memcmp("Id", src, 2))
			continue;

		/* step 3: skip over Id$ or Id:xxxxx$ */
		if (src[2] == '$') {
			src += 3;
			len -= 3;
		} else if (src[2] == ':') {
			/*
			 * It's possible that an expanded Id has crept its way into the
			 * repository, we cope with that by stripping the expansion out.
			 * This is probably not a good idea, since it will cause changes
			 * on checkout, which won't go away by stash, but let's keep it
			 * for git-style ids.
			 */
			dollar = memchr(src + 3, '$', len - 3);
			if (!dollar) {
				/* incomplete keyword, no more '$', so just quit the loop */
				break;
			}

			if (memchr(src + 3, '\n', dollar - src - 3)) {
				/* Line break before the next dollar. */
				continue;
			}

			spc = memchr(src + 4, ' ', dollar - src - 4);