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Archive.cpp
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380 lines (328 loc) · 8.43 KB
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//
// Archive.cpp
//
// $Id$
//
// Library: SevenZip
// Package: Archive
// Module: Archive
//
// Definition of the Archive class.
//
// Copyright (c) 2014, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
//
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
#include "Poco/SevenZip/Archive.h"
#include "Poco/TextConverter.h"
#include "Poco/UTF8Encoding.h"
#include "Poco/UTF16Encoding.h"
#include "Poco/FileStream.h"
#include "Poco/File.h"
#include "Poco/Path.h"
#include "Poco/Mutex.h"
#include "7z.h"
#include "7zAlloc.h"
#include "7zCrc.h"
#include "7zFile.h"
namespace Poco {
namespace SevenZip {
class ArchiveImpl
{
public:
ArchiveImpl(const std::string& path):
_path(path)
{
initialize();
open();
}
~ArchiveImpl()
{
close();
}
const std::string& path() const
{
return _path;
}
std::size_t size() const
{
return _entries.size();
}
Archive::ConstIterator begin() const
{
return _entries.begin();
}
Archive::ConstIterator end() const
{
return _entries.end();
}
std::string extract(const ArchiveEntry& entry, const std::string& destPath)
{
Poco::Path basePath;
if (destPath.empty())
{
basePath = Poco::Path::current();
}
else
{
basePath = destPath;
}
basePath.makeDirectory();
Poco::Path entryPath(entry.path(), Poco::Path::PATH_UNIX);
Poco::Path extractedPath(basePath);
extractedPath.append(entryPath);
extractedPath.makeAbsolute();
if (entry.isFile())
{
Poco::UInt32 blockIndex = 0;
Byte* pOutBuffer = 0;
std::size_t outBufferSize = 0;
std::size_t offset = 0;
std::size_t extractedSize = 0;
int err = SzArEx_Extract(
&_db,
&_lookStream.s,
entry.index(),
&blockIndex,
&pOutBuffer,
&outBufferSize,
&offset,
&extractedSize,
&_szAlloc,
&_szAllocTemp);
if (err == SZ_OK)
{
try
{
poco_assert (extractedSize == entry.size());
Poco::Path parent = extractedPath.parent();
Poco::File dir(parent.toString());
dir.createDirectories();
Poco::FileOutputStream ostr(extractedPath.toString());
ostr.write(reinterpret_cast<const char*>(pOutBuffer) + offset, extractedSize);
IAlloc_Free(&_szAlloc, pOutBuffer);
}
catch (...)
{
IAlloc_Free(&_szAlloc, pOutBuffer);
throw;
}
}
else
{
handleError(err, entry.path());
}
}
else
{
Poco::File dir(extractedPath.toString());
dir.createDirectories();
}
return extractedPath.toString();
}
protected:
void initialize()
{
FileInStream_CreateVTable(&_archiveStream);
LookToRead_CreateVTable(&_lookStream, False);
Poco::FastMutex::ScopedLock lock(_initMutex);
if (!_initialized)
{
CrcGenerateTable();
_initialized = true;
}
}
void open()
{
checkFile();
if (InFile_Open(&_archiveStream.file, _path.c_str()) != SZ_OK)
{
throw Poco::OpenFileException(_path);
}
_lookStream.realStream = &_archiveStream.s;
LookToRead_Init(&_lookStream);
SzArEx_Init(&_db);
int err = SzArEx_Open(&_db, &_lookStream.s, &_szAlloc, &_szAllocTemp);
if (err == SZ_OK)
{
loadEntries();
}
else
{
handleError(err);
}
}
void close()
{
SzArEx_Free(&_db, &_szAlloc);
File_Close(&_archiveStream.file);
}
void loadEntries()
{
_entries.reserve(_db.db.NumFiles);
for (Poco::UInt32 i = 0; i < _db.db.NumFiles; i++)
{
const CSzFileItem *f = _db.db.Files + i;
ArchiveEntry::EntryType type = f->IsDir ? ArchiveEntry::ENTRY_DIRECTORY : ArchiveEntry::ENTRY_FILE;
Poco::UInt32 attributes = f->AttribDefined ? f->Attrib : 0;
Poco::UInt64 size = f->Size;
std::vector<Poco::UInt16> utf16Path;
std::size_t utf16PathLen = SzArEx_GetFileNameUtf16(&_db, i, 0);
utf16Path.resize(utf16PathLen, 0);
utf16PathLen--; // we don't need terminating 0 later on
SzArEx_GetFileNameUtf16(&_db, i, &utf16Path[0]);
Poco::UTF8Encoding utf8Encoding;
Poco::UTF16Encoding utf16Encoding;
Poco::TextConverter converter(utf16Encoding, utf8Encoding);
std::string utf8Path;
converter.convert(&utf16Path[0], (int) utf16PathLen*sizeof(Poco::UInt16), utf8Path);
Poco::Timestamp lastModified(0);
if (f->MTimeDefined)
{
Poco::Timestamp::TimeVal tv(0);
tv = (static_cast<Poco::UInt64>(f->MTime.High) << 32) + f->MTime.Low;
tv -= (static_cast<Poco::Int64>(0x019DB1DE) << 32) + 0xD53E8000;
tv /= 10;
lastModified = tv;
}
ArchiveEntry entry(type, utf8Path, size, lastModified, attributes, i);
_entries.push_back(entry);
}
}
void checkFile()
{
Poco::File f(_path);
if (!f.exists())
{
throw Poco::FileNotFoundException(_path);
}
if (!f.isFile())
{
throw Poco::OpenFileException("not a file", _path);
}
if (!f.canRead())
{
throw Poco::FileAccessDeniedException(_path);
}
}
void handleError(int err)
{
std::string arg;
handleError(err, arg);
}
void handleError(int err, const std::string& arg)
{
switch (err)
{
case SZ_ERROR_DATA:
throw Poco::DataFormatException("archive", _path, err);
case SZ_ERROR_MEM:
throw Poco::RuntimeException("7z library out of memory", err);
case SZ_ERROR_CRC:
throw Poco::DataException("CRC error", arg, err);
case SZ_ERROR_UNSUPPORTED:
throw Poco::DataException("unsupported archive format", arg, err);
case SZ_ERROR_PARAM:
throw Poco::InvalidArgumentException("7z library", err);
case SZ_ERROR_INPUT_EOF:
throw Poco::ReadFileException("EOF while reading archive", _path, err);
case SZ_ERROR_OUTPUT_EOF:
throw Poco::WriteFileException(arg, err);
case SZ_ERROR_READ:
throw Poco::ReadFileException(_path, err);
case SZ_ERROR_WRITE:
throw Poco::WriteFileException(arg, err);
default:
throw Poco::IOException("7z error", arg, err);
}
}
private:
std::string _path;
Archive::EntryVec _entries;
CFileInStream _archiveStream;
CLookToRead _lookStream;
CSzArEx _db;
static ISzAlloc _szAlloc;
static ISzAlloc _szAllocTemp;
static Poco::FastMutex _initMutex;
static bool _initialized;
};
ISzAlloc ArchiveImpl::_szAlloc = { SzAlloc, SzFree };
ISzAlloc ArchiveImpl::_szAllocTemp = { SzAlloc, SzFree };
Poco::FastMutex ArchiveImpl::_initMutex;
bool ArchiveImpl::_initialized(false);
Archive::Archive(const std::string& path):
_pImpl(new ArchiveImpl(path))
{
}
Archive::~Archive()
{
delete _pImpl;
}
const std::string& Archive::path() const
{
return _pImpl->path();
}
std::size_t Archive::size() const
{
return _pImpl->size();
}
Archive::ConstIterator Archive::begin() const
{
return _pImpl->begin();
}
Archive::ConstIterator Archive::end() const
{
return _pImpl->end();
}
void Archive::extract(const std::string& destPath)
{
for (ConstIterator it = begin(); it != end(); ++it)
{
ExtractedEventArgs extractedArgs;
extractedArgs.entry = *it;
bool success = true;
try
{
extractedArgs.extractedPath = _pImpl->extract(*it, destPath);
}
catch (Poco::Exception& exc)
{
success = false;
FailedEventArgs failedArgs;
failedArgs.entry = *it;
failedArgs.pException = &exc;
failed(this, failedArgs);
}
if (success)
{
extracted(this, extractedArgs);
}
}
}
std::string Archive::extract(const ArchiveEntry& entry, const std::string& destPath)
{
return _pImpl->extract(entry, destPath);
}
} } // namespace Poco::SevenZip