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
21 namespace aapt {
22 namespace io {
23
CreateFileSegment(size_t offset,size_t len)24 IFile* 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
OpenAsData()30 std::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
OpenInputStream()42 std::unique_ptr<io::InputStream> FileSegment::OpenInputStream() {
43 return OpenAsData();
44 }
45
46 } // namespace io
47 } // namespace aapt
48