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1 // Copyright 2017 The Chromium OS Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef COMPRESSSOR_ARCHIVE_H_ | |
6 #define COMPRESSSOR_ARCHIVE_H_ | |
7 | |
8 #include "compressor_io_javascript_stream.h" | |
9 | |
10 // Defines a wrapper for packing operations executed on an archive. API is not | |
11 // meant to be thread safe and its methods shouldn't be called in parallel. | |
12 class CompressorArchive { | |
13 public: | |
14 explicit CompressorArchive(CompressorStream* compressor_stream) | |
15 : compressor_stream_(compressor_stream) {} | |
16 | |
17 virtual ~CompressorArchive() {} | |
18 | |
19 // Creates an archive object. This method does not call CustomArchiveWrite, so | |
20 // this is synchronous. | |
21 virtual void CreateArchive() = 0; | |
22 | |
23 // Releases all resources obtained by libarchive. | |
24 // This method also writes metadata about the archive itself onto the end of | |
25 // the archive file before releasing resources if hasError is false. Since | |
26 // writing data onto the archive is asynchronous, this function must not be | |
27 // called in the main thread if hasError is false. | |
28 virtual void CloseArchive(bool has_error) = 0; | |
29 | |
30 // Adds an entry to the archive. It writes the header of the entry onto the | |
31 // archive first, and then if it is a file(not a directory), requests | |
32 // JavaScript for file chunks, compresses and writes them onto the archive | |
33 // until all chunks of the entry are written onto the archive. This method | |
34 // calls IO operations, so this function must not be called in the main thread
. | |
35 virtual void AddToArchive(const std::string& filename, | |
36 int64_t file_size, | |
37 time_t modification_time, | |
38 bool is_directory) = 0; | |
39 | |
40 // A getter function for archive_. | |
41 struct archive* archive() const { return archive_; } | |
42 | |
43 // A getter function for compressor_stream_. | |
44 CompressorStream* compressor_stream() const { return compressor_stream_; } | |
45 | |
46 private: | |
47 // The libarchive correspondent archive object. | |
48 struct archive* archive_; | |
49 | |
50 // An instance that takes care of all IO operations. | |
51 CompressorStream* compressor_stream_; | |
52 }; | |
53 | |
54 #endif // COMPRESSSOR_ARCHIVE_H_ | |
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