Function combine_notes_concatenate

notes.c:810–856

}

int combine_notes_concatenate(struct object_id *cur_oid,
			      const struct object_id *new_oid)
{
	char *cur_msg = NULL, *new_msg = NULL, *buf;
	unsigned long buf_len;
	size_t cur_len, new_len;
	enum object_type cur_type, new_type;
	int ret;

	/* read in both note blob objects */
	if (!is_null_oid(new_oid))
		new_msg = odb_read_object(the_repository->objects, new_oid,
					  &new_type, &new_len);
	if (!new_msg || !new_len || new_type != OBJ_BLOB) {
		free(new_msg);
		return 0;
	}
	if (!is_null_oid(cur_oid))
		cur_msg = odb_read_object(the_repository->objects, cur_oid,
					  &cur_type, &cur_len);
	if (!cur_msg || !cur_len || cur_type != OBJ_BLOB) {
		free(cur_msg);
		free(new_msg);
		oidcpy(cur_oid, new_oid);
		return 0;
	}

	/* we will separate the notes by two newlines anyway */
	if (cur_msg[cur_len - 1] == '\n')
		cur_len--;

	/* concatenate cur_msg and new_msg into buf */
	buf_len = cur_len + 2 + new_len;
	buf = (char *) xmalloc(buf_len);
	memcpy(buf, cur_msg, cur_len);
	buf[cur_len] = '\n';
	buf[cur_len + 1] = '\n';
	memcpy(buf + cur_len + 2, new_msg, new_len);
	free(cur_msg);
	free(new_msg);

	/* create a new blob object from buf */
	ret = odb_write_object(the_repository->objects, buf,
			       buf_len, OBJ_BLOB, cur_oid);
	free(buf);
	return ret;
}

int combine_notes_overwrite(struct object_id *cur_oid,
			    const struct object_id *new_oid)