Function get_one_patchid

builtin/patch-id.c:66–178

}

static size_t get_one_patchid(struct object_id *next_oid, struct object_id *result,
			      struct strbuf *line_buf, int stable, int verbatim)
{
	size_t patchlen = 0;
	int found_next = 0;
	int before = -1, after = -1;
	int diff_is_binary = 0;
	char pre_oid_str[GIT_MAX_HEXSZ + 1], post_oid_str[GIT_MAX_HEXSZ + 1];
	struct git_hash_ctx ctx;

	the_hash_algo->init_fn(&ctx);
	oidclr(result, the_repository->hash_algo);

	while (strbuf_getwholeline(line_buf, stdin, '\n') != EOF) {
		char *line = line_buf->buf;
		const char *p = line;
		size_t len;

		/* Possibly skip over the prefix added by "log" or "format-patch" */
		if (!skip_prefix(line, "commit ", &p) &&
		    !skip_prefix(line, "From ", &p) &&
		    starts_with(line, "\\ ") && 12 < strlen(line)) {
			if (verbatim)
				git_hash_update(&ctx, line, strlen(line));
			continue;
		}

		if (!get_oid_hex(p, next_oid)) {
			found_next = 1;
			break;
		}

		/* Ignore commit comments */
		if (!patchlen && !starts_with(line, "diff "))
			continue;

		/* Parsing diff header?  */
		if (before == -1) {
			if (starts_with(line, "GIT binary patch") ||
			    starts_with(line, "Binary files")) {
				diff_is_binary = 1;
				before = 0;
				git_hash_update(&ctx, pre_oid_str,
						strlen(pre_oid_str));
				git_hash_update(&ctx, post_oid_str,
						strlen(post_oid_str));
				if (stable)
					flush_one_hunk(result, &ctx);
				continue;
			} else if (skip_prefix(line, "index ", &p)) {
				char *oid1_end = strstr(line, "..");
				char *oid2_end = NULL;
				if (oid1_end)
					oid2_end = strstr(oid1_end, " ");
				if (!oid2_end)
					oid2_end = line + strlen(line) - 1;
				if (oid1_end != NULL && oid2_end != NULL) {
					*oid1_end = *oid2_end = '\0';