Adding TTC support, take 1

src/variable_length.h

@@ -0,0 +1,38 @@
+// Copyright 2015 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Helper functions for woff2 variable length types: 255UInt16 and UIntBase128
+
+#ifndef WOFF2_VARIABLE_LENGTH_H_
+#define WOFF2_VARIABLE_LENGTH_H_
+
+#include <inttypes.h>
+#include <vector>
+#include "./buffer.h"
+
+namespace woff2 {
+
+size_t Size255UShort(uint16_t value);
+bool Read255UShort(Buffer* buf, unsigned int* value);
+void Write255UShort(std::vector<uint8_t>* out, int value);
+void Store255UShort(int val, size_t* offset, uint8_t* dst);
+
+size_t Base128Size(size_t n);
+bool ReadBase128(Buffer* buf, uint32_t* value);
+void StoreBase128(size_t len, size_t* offset, uint8_t* dst);
+
+} // namespace woff2
+
+#endif  // WOFF2_VARIABLE_LENGTH_H_
+