Initial project import

tools/v/vlib/db/mysql/utils.c.v

@@ -0,0 +1,39 @@
+module mysql
+
+// get_error_msg returns error message from MySQL instance.
+fn get_error_msg(conn &C.MYSQL) string {
+	return clone_mysql_cstring(C.mysql_error(conn))
+}
+
+// get_errno returns error number from MySQL instance.
+fn get_errno(conn &C.MYSQL) int {
+	return C.mysql_errno(conn)
+}
+
+// get_stmt_error_msg returns error message from a MySQL statement instance.
+fn get_stmt_error_msg(stmt &C.MYSQL_STMT) string {
+	return clone_mysql_cstring(&u8(C.mysql_stmt_error(stmt)))
+}
+
+// get_stmt_errno returns error number from a MySQL statement instance.
+fn get_stmt_errno(stmt &C.MYSQL_STMT) int {
+	return C.mysql_stmt_errno(stmt)
+}
+
+@[inline]
+fn clone_mysql_cstring(ptr &u8) string {
+	if isnil(ptr) {
+		return ''
+	}
+	return unsafe { tos_clone(ptr) }
+}
+
+// resolve_nil_str returns an empty string if passed value is a nil pointer.
+fn resolve_nil_str(ptr &u8) string {
+	return clone_mysql_cstring(ptr)
+}
+
+@[inline]
+fn mystring(b &u8) string {
+	return clone_mysql_cstring(b)
+}