1/*
2 * Copyright (C) 2015 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/FileSystem.h"
18
19#include "androidfw/StringPiece.h"
20#include "utils/FileMap.h"
21
22#include "Source.h"
23#include "util/Files.h"
24#include "util/Maybe.h"
25#include "util/Util.h"
26
27using android::StringPiece;
28
29namespace aapt {
30namespace io {
31
32RegularFile::RegularFile(const Source& source) : source_(source) {}
33
34std::unique_ptr<IData> RegularFile::OpenAsData() {
35  android::FileMap map;
36  if (Maybe<android::FileMap> map = file::MmapPath(source_.path, nullptr)) {
37    if (map.value().getDataPtr() && map.value().getDataLength() > 0) {
38      return util::make_unique<MmappedData>(std::move(map.value()));
39    }
40    return util::make_unique<EmptyData>();
41  }
42  return {};
43}
44
45const Source& RegularFile::GetSource() const { return source_; }
46
47FileCollectionIterator::FileCollectionIterator(FileCollection* collection)
48    : current_(collection->files_.begin()), end_(collection->files_.end()) {}
49
50bool FileCollectionIterator::HasNext() { return current_ != end_; }
51
52IFile* FileCollectionIterator::Next() {
53  IFile* result = current_->second.get();
54  ++current_;
55  return result;
56}
57
58IFile* FileCollection::InsertFile(const StringPiece& path) {
59  return (files_[path.to_string()] = util::make_unique<RegularFile>(Source(path))).get();
60}
61
62IFile* FileCollection::FindFile(const StringPiece& path) {
63  auto iter = files_.find(path.to_string());
64  if (iter != files_.end()) {
65    return iter->second.get();
66  }
67  return nullptr;
68}
69
70std::unique_ptr<IFileCollectionIterator> FileCollection::Iterator() {
71  return util::make_unique<FileCollectionIterator>(this);
72}
73
74}  // namespace io
75}  // namespace aapt
76