1/*
2 * Copyright 2012, 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#include <sys/stat.h>
18#include <stdlib.h>
19
20#include "bcinfo/Wrap/in_memory_wrapper_input.h"
21
22InMemoryWrapperInput::InMemoryWrapperInput(const char* buffer, size_t size) :
23    _buffer(buffer), _pos(0), _size(size) {
24}
25
26InMemoryWrapperInput::~InMemoryWrapperInput() {
27}
28
29size_t InMemoryWrapperInput::Read(uint8_t* buffer, size_t wanted) {
30  size_t found = 0;
31
32  if (!buffer) {
33    return 0;
34  }
35
36  while (found < wanted) {
37    if (_pos >= _size) {
38      return found;
39    }
40    buffer[found++] = _buffer[_pos++];
41  }
42  return found;
43}
44
45bool InMemoryWrapperInput::AtEof() {
46  return (_pos >= _size);
47}
48
49off_t InMemoryWrapperInput::Size() {
50  return _size;
51}
52
53bool InMemoryWrapperInput::Seek(uint32_t pos) {
54  if (pos < _size) {
55    _pos = pos;
56    return true;
57  } else {
58    return false;
59  }
60}
61