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59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
/* This file is (c) 2008-2010 Konstantin Isakov <ikm@users.berlios.de>
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* Part of GoldenDict. Licensed under GPLv3 or later, see the LICENSE file */
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#ifndef __ZIPFILE_HH_INCLUDED__
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#define __ZIPFILE_HH_INCLUDED__
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#include <QFile>
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/// Support for zip files in GoldenDict. Note that the implementation is
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/// strictly tailored to GoldenDict needs only.
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namespace ZipFile {
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enum CompressionMethod
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{
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Uncompressed,
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Deflated,
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Unsupported
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};
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/// Entry from central dir
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struct CentralDirEntry
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{
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QByteArray fileName;
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quint32 localHeaderOffset, compressedSize, uncompressedSize;
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CompressionMethod compressionMethod;
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};
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/// Represents contents of the local file header -- that what CentralDirEntry::
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/// localHeaderOffset points at.
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struct LocalFileHeader
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{
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QByteArray fileName;
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quint32 compressedSize, uncompressedSize;
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CompressionMethod compressionMethod;
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};
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/// Finds the central directory in the given file and positions it at its
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/// beginning. Returns true if the file is positioned, false otherwise (not a
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/// zip file or other error).
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/// Once the file is positioned, entries may be read by constructing Entry
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/// objects.
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bool positionAtCentralDir( QFile & );
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/// Reads entry from the zip at its current offset. The file gets advanced
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/// by the size of entry, so it points to the next entry.
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/// Returns true on success, false otherwise.
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bool readNextEntry( QFile &, CentralDirEntry & );
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/// Reads loca file header from the zip at its current offset. The file gets
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/// advanced by the size of entry and starts pointing to file data.
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/// Returns true on success, false otherwise.
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bool readLocalHeader( QFile &, LocalFileHeader & );
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}
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#endif
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