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
22namespace sfntly {
23
24// C++ equivalent to Java's OutputStream class
25class InputStream {
26 public:
27  // Make gcc -Wnon-virtual-dtor happy.
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
41class 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