1 /* 2 * Copyright 2011 Google Inc. All Rights Reserved. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef SFNTLY_CPP_SRC_SFNTLY_PORT_INPUT_STREAM_H_ 18 #define SFNTLY_CPP_SRC_SFNTLY_PORT_INPUT_STREAM_H_ 19 20 #include "sfntly/port/type.h" 21 22 namespace sfntly { 23 24 // C++ equivalent to Java's OutputStream class 25 class InputStream { 26 public: 27 // Make gcc -Wnon-virtual-dtor happy. ~InputStream()28 virtual ~InputStream() {} 29 30 virtual int32_t Available() = 0; 31 virtual void Close() = 0; 32 virtual void Mark(int32_t readlimit) = 0; 33 virtual bool MarkSupported() = 0; 34 virtual int32_t Read() = 0; 35 virtual int32_t Read(ByteVector* b) = 0; 36 virtual int32_t Read(ByteVector* b, int32_t offset, int32_t length) = 0; 37 virtual void Reset() = 0; 38 virtual int64_t Skip(int64_t n) = 0; 39 }; 40 41 class PushbackInputStream : public InputStream { 42 public: 43 virtual void Unread(ByteVector* b) = 0; 44 virtual void Unread(ByteVector* b, int32_t offset, int32_t length) = 0; 45 }; 46 47 } // namespace sfntly 48 49 #endif // SFNTLY_CPP_SRC_SFNTLY_PORT_INPUT_STREAM_H_ 50