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// Decompress.h
//
// Library: Zip
// Package: Zip
// Module: Decompress
//
// Definition of the Decompress class.
//
// Copyright (c) 2007, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef Zip_Decompress_INCLUDED
#define Zip_Decompress_INCLUDED
#include "Poco/Zip/Zip.h"
#include "Poco/Zip/ParseCallback.h"
#include "Poco/Zip/ZipArchive.h"
#include "Poco/Path.h"
#include "Poco/FIFOEvent.h"
namespace Poco {
namespace Zip {
class ZipArchive;
class Zip_API Decompress: public ParseCallback
/// Decompress extracts files from zip files, can be used to extract single files or all files
{
public:
typedef std::map<std::string, Poco::Path> ZipMapping;
/// Maps key of FileInfo entries to their local decompressed representation
Poco::FIFOEvent<std::pair<const ZipLocalFileHeader, const std::string> > EError;
/// Thrown whenever an error is detected when handling a ZipLocalFileHeader entry. The string contains an error message
Poco::FIFOEvent<std::pair<const ZipLocalFileHeader, const Poco::Path> > EOk;
/// Thrown whenever a file was successfully decompressed
Decompress(std::istream& in, const Poco::Path& outputDir, bool flattenDirs = false, bool keepIncompleteFiles = false);
/// Creates the Decompress. Note that istream must be good and at the very beginning of the file!
/// Calling decompressAllFiles will cause the stream to be in state failed once the zip file is processed.
/// outputDir must be a directory. If it doesn't exist yet, it will be automatically created.
/// If flattenDirs is set to true, the directory structure of the zip file is not recreated.
/// Instead, all files are extracted into one single directory.
~Decompress();
/// Destroys the Decompress.
ZipArchive decompressAllFiles();
/// Decompresses all files stored in the zip File. Can only be called once per Decompress object.
/// Use mapping to retrieve the location of the decompressed files
bool handleZipEntry(std::istream& zipStream, const ZipLocalFileHeader& hdr);
const ZipMapping& mapping() const;
/// A ZipMapping stores as key the full name of the ZipFileInfo/ZipLocalFileHeader and as value the decompressed file
/// If for a ZipFileInfo no mapping exists, there was an error during decompression and the entry is considered to be corrupt
private:
Decompress(const Decompress&);
Decompress& operator=(const Decompress&);
void onOk(const void*, std::pair<const ZipLocalFileHeader, const Poco::Path>& val);
private:
std::istream& _in;
Poco::Path _outDir;
bool _flattenDirs;
bool _keepIncompleteFiles;
ZipMapping _mapping;
};
inline const Decompress::ZipMapping& Decompress::mapping() const
{
return _mapping;
}
} } // namespace Poco::Zip
#endif // Zip_Decompress_INCLUDED
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