Implement UUID handling to avoid libuuid dependency

1 files changed, 16 insertions, 3 deletions

diff --git a/src/uuid.cpp b/src/uuid.cpp
index e1f044a..9af32b7 100644
--- a/src/uuid.cpp
+++ b/src/uuid.cpp
@@ -7,16 +7,29 @@ using namespace erebos;
 using std::runtime_error;
 using std::string;
 
+static const size_t UUID_STR_LEN = 36;
+
+static const char * FORMAT_STRING = "%02hhx%02hhx%02hhx%02hhx-%02hhx%02hhx-"
+	"%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx";
+
 UUID::UUID(string str)
 {
-	if (uuid_parse(str.c_str(), uuid) != 0)
+	if (str.size() != UUID_STR_LEN)
+		throw runtime_error("invalid UUID");
+
+	if (sscanf(str.c_str(), FORMAT_STRING,
+				&uuid[0], &uuid[1], &uuid[2], &uuid[3], &uuid[4], &uuid[5], &uuid[6], &uuid[7],
+				&uuid[8], &uuid[9], &uuid[10], &uuid[11], &uuid[12], &uuid[13], &uuid[14], &uuid[15])
+			!= 16)
 		throw runtime_error("invalid UUID");
 }
 
 UUID::operator string() const
 {
-	string str(UUID_STR_LEN - 1, '\0');
-	uuid_unparse_lower(uuid, str.data());
+	string str(UUID_STR_LEN, '\0');
+	snprintf(str.data(), UUID_STR_LEN + 1, FORMAT_STRING,
+			uuid[0], uuid[1], uuid[2], uuid[3], uuid[4], uuid[5], uuid[6], uuid[7],
+			uuid[8], uuid[9], uuid[10], uuid[11], uuid[12], uuid[13], uuid[14], uuid[15]);
 	return str;
 }