1/*
2 * Copyright (C) 2016 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 "io/File.h"
18
19#include <memory>
20
21namespace aapt {
22namespace io {
23
24IFile* IFile::CreateFileSegment(size_t offset, size_t len) {
25  FileSegment* file_segment = new FileSegment(this, offset, len);
26  segments_.push_back(std::unique_ptr<IFile>(file_segment));
27  return file_segment;
28}
29
30std::unique_ptr<IData> FileSegment::OpenAsData() {
31  std::unique_ptr<IData> data = file_->OpenAsData();
32  if (!data) {
33    return {};
34  }
35
36  if (offset_ <= data->size() - len_) {
37    return util::make_unique<DataSegment>(std::move(data), offset_, len_);
38  }
39  return {};
40}
41
42}  // namespace io
43}  // namespace aapt
44