zip_archive.h revision a2806550cefb7c70781d8ee6279e6ad5769804cb 
1/*
2 * Copyright (C) 2008 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#ifndef ART_RUNTIME_ZIP_ARCHIVE_H_
18#define ART_RUNTIME_ZIP_ARCHIVE_H_
19
20#include <stdint.h>
21#include <string>
22#include <ziparchive/zip_archive.h>
23
24#include "base/logging.h"
25#include "base/unix_file/random_access_file.h"
26#include "globals.h"
27#include "mem_map.h"
28#include "os.h"
29#include "safe_map.h"
30#include "UniquePtr.h"
31
32namespace art {
33
34class ZipArchive;
35class MemMap;
36
37class ZipEntry {
38 public:
39  bool ExtractToFile(File& file, std::string* error_msg);
40  MemMap* ExtractToMemMap(const char* entry_filename, std::string* error_msg);
41
42  uint32_t GetUncompressedLength();
43  uint32_t GetCrc32();
44
45 private:
46  ZipEntry(ZipArchiveHandle handle,
47           ::ZipEntry* zip_entry) : handle_(handle), zip_entry_(zip_entry) {}
48
49  ZipArchiveHandle handle_;
50  ::ZipEntry* const zip_entry_;
51
52  friend class ZipArchive;
53  DISALLOW_COPY_AND_ASSIGN(ZipEntry);
54};
55
56class ZipArchive {
57 public:
58  // return new ZipArchive instance on success, NULL on error.
59  static ZipArchive* Open(const char* filename, std::string* error_msg);
60  static ZipArchive* OpenFromFd(int fd, const char* filename, std::string* error_msg);
61
62  ZipEntry* Find(const char* name, std::string* error_msg) const;
63
64  ~ZipArchive() {
65    CloseArchive(handle_);
66  }
67
68 private:
69  explicit ZipArchive(ZipArchiveHandle handle) : handle_(handle) {}
70
71  friend class ZipEntry;
72
73  ZipArchiveHandle handle_;
74
75  DISALLOW_COPY_AND_ASSIGN(ZipArchive);
76};
77
78}  // namespace art
79
80#endif  // ART_RUNTIME_ZIP_ARCHIVE_H_
81