1/*
2 * Copyright (C) 2017 The Android Open Source Project
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 AAPT_IO_BIGBUFFERSTREAM_H
18#define AAPT_IO_BIGBUFFERSTREAM_H
19
20#include "io/Io.h"
21#include "util/BigBuffer.h"
22
23namespace aapt {
24namespace io {
25
26class BigBufferInputStream : public KnownSizeInputStream {
27 public:
28  inline explicit BigBufferInputStream(const BigBuffer* buffer)
29      : buffer_(buffer), iter_(buffer->begin()) {
30  }
31  virtual ~BigBufferInputStream() = default;
32
33  bool Next(const void** data, size_t* size) override;
34
35  void BackUp(size_t count) override;
36
37  bool CanRewind() const override;
38
39  bool Rewind() override;
40
41  size_t ByteCount() const override;
42
43  bool HadError() const override;
44
45  size_t TotalSize() const override;
46
47 private:
48  DISALLOW_COPY_AND_ASSIGN(BigBufferInputStream);
49
50  const BigBuffer* buffer_;
51  BigBuffer::const_iterator iter_;
52  size_t offset_ = 0;
53  size_t bytes_read_ = 0;
54};
55
56class BigBufferOutputStream : public OutputStream {
57 public:
58  inline explicit BigBufferOutputStream(BigBuffer* buffer) : buffer_(buffer) {
59  }
60  virtual ~BigBufferOutputStream() = default;
61
62  bool Next(void** data, size_t* size) override;
63
64  void BackUp(size_t count) override;
65
66  size_t ByteCount() const override;
67
68  bool HadError() const override;
69
70 private:
71  DISALLOW_COPY_AND_ASSIGN(BigBufferOutputStream);
72
73  BigBuffer* buffer_;
74};
75
76}  // namespace io
77}  // namespace aapt
78
79#endif  // AAPT_IO_BIGBUFFERSTREAM_H
80