| Index: ui/file_manager/zip_archiver/unpacker/cpp/volume_archive_libarchive.h
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| diff --git a/ui/file_manager/zip_archiver/unpacker/cpp/volume_archive_libarchive.h b/ui/file_manager/zip_archiver/unpacker/cpp/volume_archive_libarchive.h
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| deleted file mode 100644
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| index fde019aa390a72adca8aec3882bf99d46fc1f577..0000000000000000000000000000000000000000
|
| --- a/ui/file_manager/zip_archiver/unpacker/cpp/volume_archive_libarchive.h
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| +++ /dev/null
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| @@ -1,137 +0,0 @@
|
| -// Copyright 2014 The Chromium OS Authors. All rights reserved.
|
| -// Use of this source code is governed by a BSD-style license that can be
|
| -// found in the LICENSE file.
|
| -
|
| -#ifndef VOLUME_ARCHIVE_LIBARCHIVE_H_
|
| -#define VOLUME_ARCHIVE_LIBARCHIVE_H_
|
| -
|
| -#include <string>
|
| -
|
| -#include "archive.h"
|
| -
|
| -#include "volume_archive.h"
|
| -
|
| -// A namespace with constants used by VolumeArchiveLibarchive.
|
| -namespace volume_archive_constants {
|
| -
|
| -const char kArchiveReadNewError[] = "Could not allocate archive.";
|
| -const char kFileNotFound[] = "File not found for read data request.";
|
| -const char kVolumeReaderError[] = "VolumeReader failed to retrieve data.";
|
| -const char kArchiveSupportErrorPrefix[] = "Error at support rar/zip format: ";
|
| -const char kArchiveOpenErrorPrefix[] = "Error at open archive: ";
|
| -const char kArchiveNextHeaderErrorPrefix[] =
|
| - "Error at reading next header for metadata: ";
|
| -const char kArchiveReadDataErrorPrefix[] = "Error at reading data: ";
|
| -const char kArchiveReadFreeErrorPrefix[] = "Error at archive free: ";
|
| -
|
| -// The size of the buffer used to skip unnecessary data.
|
| -// Should be positive and less than size_t maximum.
|
| -const int64_t kDummyBufferSize = 512 * 1024; // 512 KB
|
| -
|
| -// The size of the buffer used by ReadInProgress to decompress data.
|
| -// Should be positive and less than size_t maximum.
|
| -const int64_t kDecompressBufferSize = 512 * 1024; // 512 KB.
|
| -
|
| -// The maximum data chunk size for VolumeReader::Read requests.
|
| -// Should be positive.
|
| -const int64_t kMaximumDataChunkSize = 512 * 1024; // 512 KB.
|
| -
|
| -// The minimum data chunk size for VolumeReader::Read requests.
|
| -// Should be positive.
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| -const int64_t kMinimumDataChunkSize = 32 * 1024; // 16 KB.
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| -
|
| -} // namespace volume_archive_constants
|
| -
|
| -// Defines an implementation of VolumeArchive that wraps all libarchive
|
| -// operations.
|
| -class VolumeArchiveLibarchive : public VolumeArchive {
|
| - public:
|
| - explicit VolumeArchiveLibarchive(VolumeReader* reader);
|
| -
|
| - virtual ~VolumeArchiveLibarchive();
|
| -
|
| - // See volume_archive_interface.h.
|
| - virtual bool Init(const std::string& encoding);
|
| -
|
| - // See volume_archive_interface.h.
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| - virtual Result GetNextHeader();
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| - virtual Result GetNextHeader(const char** path_name,
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| - int64_t* size,
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| - bool* is_directory,
|
| - time_t* modification_time);
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| -
|
| - // See volume_archive_interface.h.
|
| - virtual bool SeekHeader(int64_t index);
|
| -
|
| - // See volume_archive_interface.h.
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| - virtual int64_t ReadData(int64_t offset,
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| - int64_t length,
|
| - const char** buffer);
|
| -
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| - // See volume_archive_interface.h.
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| - virtual void MaybeDecompressAhead();
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| -
|
| - // See volume_archive_interface.h.
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| - virtual bool Cleanup();
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| -
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| - int64_t reader_data_size() const { return reader_data_size_; }
|
| -
|
| - private:
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| - // Decompress length bytes of data starting from offset.
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| - void DecompressData(int64_t offset, int64_t length);
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| -
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| - // The size of the requested data from VolumeReader.
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| - int64_t reader_data_size_;
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| -
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| - // The libarchive correspondent archive object.
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| - archive* archive_;
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| -
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| - // The last reached entry with VolumeArchiveLibarchive::GetNextHeader.
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| - archive_entry* current_archive_entry_;
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| -
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| - // The data offset, which will be offset + length after last read
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| - // operation, where offset and length are method parameters for
|
| - // VolumeArchiveLibarchive::ReadData. Data offset is used to improve
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| - // performance for consecutive calls to VolumeArchiveLibarchive::ReadData.
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| - //
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| - // Intead of starting the read from the beginning for every
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| - // VolumeArchiveLibarchive::ReadData, the next call will start
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| - // from last_read_data_offset_ in case the offset parameter of
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| - // VolumeArchiveLibarchive::ReadData has the same value as
|
| - // last_read_data_offset_. This avoids decompressing again the bytes at
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| - // the begninning of the file, which is the average case scenario.
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| - // But in case the offset parameter is different than last_read_data_offset_,
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| - // then dummy_buffer_ will be used to ignore unused bytes.
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| - int64_t last_read_data_offset_;
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| -
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| - // The length of the last VolumeArchiveLibarchive::ReadData. Used for
|
| - // decompress ahead.
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| - int64_t last_read_data_length_;
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| -
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| - // Dummy buffer for unused data read using VolumeArchiveLibarchive::ReadData.
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| - // Sometimes VolumeArchiveLibarchive::ReadData can require reading from
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| - // offsets different from last_read_data_offset_. In this case some bytes
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| - // must be skipped. Because seeking is not possible inside compressed files,
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| - // the bytes will be discarded using this buffer.
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| - char dummy_buffer_[volume_archive_constants::kDummyBufferSize];
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| -
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| - // The address where the decompressed data starting from
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| - // decompressed_offset_ is stored. It should point to a valid location
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| - // inside decompressed_data_buffer_. Necesssary in order to NOT throw
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| - // away unused decompressed bytes as throwing them away would mean in some
|
| - // situations restarting decompressing the file from the beginning.
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| - char* decompressed_data_;
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| -
|
| - // The actual buffer that contains the decompressed data.
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| - char decompressed_data_buffer_
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| - [volume_archive_constants::kDecompressBufferSize];
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| -
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| - // The size of valid data starting from decompressed_data_ that is stored
|
| - // inside decompressed_data_buffer_.
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| - int64_t decompressed_data_size_;
|
| -
|
| - // True if VolumeArchiveLibarchive::DecompressData failed.
|
| - bool decompressed_error_;
|
| -};
|
| -
|
| -#endif // VOLUME_ARCHIVE_LIBARCHIVE_H_
|
|
|