示例#1
0
int git_oid_fromstrn(git_oid *out, const char *str, size_t length)
{
	size_t p;
	int v;

	assert(out && str);

	if (!length)
		return oid_error_invalid("too short");

	if (length > GIT_OID_HEXSZ)
		return oid_error_invalid("too long");

	memset(out->id, 0, GIT_OID_RAWSZ);

	for (p = 0; p < length; p++) {
		v = git__fromhex(str[p]);
		if (v < 0)
			return oid_error_invalid("contains invalid characters");

		out->id[p / 2] |= (unsigned char)(v << (p % 2 ? 0 : 4));
	}

	return 0;
}
示例#2
0
文件: oid.c 项目: ralpheav/PM_GIT
int git_oid_fromstrn(git_oid *out, const char *str, size_t length)
{
	size_t p;
	int v;

	if (length > GIT_OID_HEXSZ)
		length = GIT_OID_HEXSZ;

	for (p = 0; p < length - 1; p += 2) {
		v = (git__fromhex(str[p + 0]) << 4)
				| git__fromhex(str[p + 1]);

		if (v < 0)
			return oid_error_invalid("contains invalid characters");

		out->id[p / 2] = (unsigned char)v;
	}

	if (length % 2) {
		v = (git__fromhex(str[p + 0]) << 4);
		if (v < 0)
			return oid_error_invalid("contains invalid characters");

		out->id[p / 2] = (unsigned char)v;
		p += 2;
	}

	memset(out->id + p / 2, 0, (GIT_OID_HEXSZ - p) / 2);

	return 0;
}