Mårten Kongstad | 0275123 | 2018-04-27 13:16:32 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2018 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 <memory> |
| 18 | #include <string> |
Mårten Kongstad | 0275123 | 2018-04-27 13:16:32 +0200 | [diff] [blame] | 19 | |
Mårten Kongstad | 0f76311 | 2018-11-19 14:14:37 +0100 | [diff] [blame] | 20 | #include "idmap2/Result.h" |
Mårten Kongstad | 0275123 | 2018-04-27 13:16:32 +0200 | [diff] [blame] | 21 | #include "idmap2/ZipFile.h" |
| 22 | |
Mårten Kongstad | 0eba72a | 2018-11-29 08:23:14 +0100 | [diff] [blame] | 23 | namespace android::idmap2 { |
Mårten Kongstad | 0275123 | 2018-04-27 13:16:32 +0200 | [diff] [blame] | 24 | |
| 25 | std::unique_ptr<MemoryChunk> MemoryChunk::Allocate(size_t size) { |
| 26 | void* ptr = ::operator new(sizeof(MemoryChunk) + size); |
| 27 | std::unique_ptr<MemoryChunk> chunk(reinterpret_cast<MemoryChunk*>(ptr)); |
| 28 | chunk->size = size; |
| 29 | return chunk; |
| 30 | } |
| 31 | |
| 32 | std::unique_ptr<const ZipFile> ZipFile::Open(const std::string& path) { |
| 33 | ::ZipArchiveHandle handle; |
| 34 | int32_t status = ::OpenArchive(path.c_str(), &handle); |
| 35 | if (status != 0) { |
| 36 | return nullptr; |
| 37 | } |
| 38 | return std::unique_ptr<ZipFile>(new ZipFile(handle)); |
| 39 | } |
| 40 | |
| 41 | ZipFile::~ZipFile() { |
| 42 | ::CloseArchive(handle_); |
| 43 | } |
| 44 | |
| 45 | std::unique_ptr<const MemoryChunk> ZipFile::Uncompress(const std::string& entryPath) const { |
| 46 | ::ZipEntry entry; |
| 47 | int32_t status = ::FindEntry(handle_, ::ZipString(entryPath.c_str()), &entry); |
| 48 | if (status != 0) { |
| 49 | return nullptr; |
| 50 | } |
| 51 | std::unique_ptr<MemoryChunk> chunk = MemoryChunk::Allocate(entry.uncompressed_length); |
| 52 | status = ::ExtractToMemory(handle_, &entry, chunk->buf, chunk->size); |
| 53 | if (status != 0) { |
| 54 | return nullptr; |
| 55 | } |
| 56 | return chunk; |
| 57 | } |
| 58 | |
Mårten Kongstad | 0f76311 | 2018-11-19 14:14:37 +0100 | [diff] [blame] | 59 | Result<uint32_t> ZipFile::Crc(const std::string& entryPath) const { |
Mårten Kongstad | 0275123 | 2018-04-27 13:16:32 +0200 | [diff] [blame] | 60 | ::ZipEntry entry; |
| 61 | int32_t status = ::FindEntry(handle_, ::ZipString(entryPath.c_str()), &entry); |
Mårten Kongstad | 0f76311 | 2018-11-19 14:14:37 +0100 | [diff] [blame] | 62 | return status == 0 ? Result<uint32_t>(entry.crc32) : kResultError; |
Mårten Kongstad | 0275123 | 2018-04-27 13:16:32 +0200 | [diff] [blame] | 63 | } |
| 64 | |
Mårten Kongstad | 0eba72a | 2018-11-29 08:23:14 +0100 | [diff] [blame] | 65 | } // namespace android::idmap2 |