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/*************************************************************************
*
* $RCSfile: zipfile.cxx,v $
*
* $Revision: 1.2 $
*
* last change: $Author: hr $ $Date: 2004-04-07 10:58:16 $
*
* The Contents of this file are made available subject to the terms of
* either of the following licenses
*
* - GNU Lesser General Public License Version 2.1
* - Sun Industry Standards Source License Version 1.1
*
* Sun Microsystems Inc., October, 2000
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2000 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*
* Sun Industry Standards Source License Version 1.1
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.1 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://www.openoffice.org/license.html.
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2000 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
* Contributor(s): _______________________________________
*
*
************************************************************************/
#ifndef ZIPEXCPTN_HXX_INCLUDED
#include "zipexcptn.hxx"
#endif
#ifndef ZIPFILE_HXX_INCLUDED
#include "internal/zipfile.hxx"
#endif
#ifndef GLOBAL_HXX_INCLUDED
#include "internal/global.hxx"
#endif
#include <malloc.h>
#include <algorithm>
/** Checks whether a file is a zip file or not
@precond The given parameter must be a string with length > 0
The file must exist
The file must be readable for the current user
@returns true if the file is a zip file
false if the file is not a zip file
@throws ParameterException if the given file name is empty
IOException if the specified file doesn't exist
AccessViolationException if read access to the file is denied
*/
bool ZipFile::IsZipFile(const std::string& FileName)
{
return true;
}
/** Returns wheter the version of the specified zip file may be uncompressed with the
currently used zlib version or not
@precond The given parameter must be a string with length > 0
The file must exist
The file must be readable for the current user
The file must be a valid zip file
@returns true if the file may be uncompressed with the currently used zlib
false if the file may not be uncompressed with the currently used zlib
@throws ParameterException if the given file name is empty
IOException if the specified file doesn't exist or is no zip file
AccessViolationException if read access to the file is denied
*/
bool ZipFile::IsValidZipFileVersionNumber(const std::string& FileName)
{
return true;
}
/** Constructs a zip file from a zip file
@precond The given parameter must be a string with length > 0
The file must exist
The file must be readable for the current user
@throws ParameterException if the given file name is empty
IOException if the specified file doesn't exist or is no valid zip file
AccessViolationException if read access to the file is denied
WrongZipVersionException if the zip file cannot be uncompressed
with the used zlib version
*/
ZipFile::ZipFile(const std::string& FileName)
{
m_uzFile = unzOpen(FileName.c_str());
if (0 == m_uzFile)
throw IOException(-1);
}
/** Destroys a zip file
*/
ZipFile::~ZipFile()
{
unzClose(m_uzFile);
}
/** Provides an interface to read the uncompressed data of a content of the zip file
@precond The specified content must exist in this file
ppstm must not be NULL
*/
void ZipFile::GetUncompressedContent(
const std::string& ContentName, /*inout*/ ZipContentBuffer_t& ContentBuffer)
{
int rc = unzLocateFile(m_uzFile, ContentName.c_str(), 0);
if (UNZ_END_OF_LIST_OF_FILE == rc)
throw ZipContentMissException(rc);
unz_file_info finfo;
unzGetCurrentFileInfo(m_uzFile, &finfo, 0, 0, 0, 0, 0, 0);
ContentBuffer.resize(finfo.uncompressed_size);
rc = unzOpenCurrentFile(m_uzFile);
if (UNZ_OK != rc)
throw ZipException(rc);
rc = unzReadCurrentFile(m_uzFile, &ContentBuffer[0], finfo.uncompressed_size);
if (rc < 0)
throw ZipException(rc);
rc = unzCloseCurrentFile(m_uzFile);
if (rc < 0)
throw ZipException(rc);
}
/** Returns a list with the content names contained within this file
*/
ZipFile::DirectoryPtr_t ZipFile::GetDirectory() const
{
DirectoryPtr_t dir(new Directory_t());
long lmax = GetFileLongestFileNameLength();
char* szFileName = reinterpret_cast<char*>(_alloca(lmax));
if (!szFileName)
throw ZipException(ERROR_NOT_ENOUGH_MEMORY);
int rc = unzGoToFirstFile(m_uzFile);
while (UNZ_OK == rc && UNZ_END_OF_LIST_OF_FILE != rc)
{
unzGetCurrentFileInfo(
m_uzFile, 0, szFileName, lmax, 0, 0, 0, 0);
dir->push_back(szFileName);
rc = unzGoToNextFile(m_uzFile);
}
if (UNZ_OK != rc && UNZ_END_OF_LIST_OF_FILE != rc)
throw ZipException(rc);
return dir;
}
/** Convinience query function may even realized with
iterating over a ZipFileDirectory returned by
GetDirectory
*/
bool ZipFile::HasContent(const std::string& ContentName) const
{
DirectoryPtr_t dir = GetDirectory();
Directory_t::iterator iter = std::find(
dir->begin(), dir->end(), ContentName);
return (iter != dir->end());
}
/** Returns the length of the longest file name
in the current zip file
*/
long ZipFile::GetFileLongestFileNameLength() const
{
long lmax = 0;
unz_file_info finfo;
int rc = unzGoToFirstFile(m_uzFile);
while (UNZ_OK == rc && UNZ_END_OF_LIST_OF_FILE != rc)
{
unzGetCurrentFileInfo(m_uzFile, &finfo, 0, 0, 0, 0, 0, 0);
lmax = std::max<long>(lmax, finfo.size_filename);
rc = unzGoToNextFile(m_uzFile);
}
if (UNZ_OK != rc && UNZ_END_OF_LIST_OF_FILE != rc)
throw ZipException(rc);
return lmax;
}
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