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/* libwpg
* Copyright (C) 2006 Ariya Hidayat (ariya@kde.org)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02111-1301 USA
*
* For further information visit http://libwpg.sourceforge.net
*/
/* "This product is not manufactured, approved, or supported by
* Corel Corporation or Corel Corporation Limited."
*/
#include "WPGStreamImplementation.h"
#include "WPGOLEStream.h"
#include "libwpg_utils.h"
#include <fstream>
#include <sstream>
#include <string>
// MSVC++ 6.0 defines getc as macro, so undefine it
#undef getc
namespace libwpg
{
class WPGFileStreamPrivate
{
public:
WPGFileStreamPrivate();
std::fstream file;
std::stringstream buffer;
};
class WPGMemoryStreamPrivate
{
public:
WPGMemoryStreamPrivate(const std::string str);
std::stringstream buffer;
};
} // namespace libwpg
using namespace libwpg;
WPGFileStreamPrivate::WPGFileStreamPrivate() :
buffer(std::ios::binary | std::ios::in | std::ios::out)
{
}
WPGMemoryStreamPrivate::WPGMemoryStreamPrivate(const std::string str) :
buffer(str, std::ios::binary | std::ios::in)
{
}
WPGFileStream::WPGFileStream(const char* filename)
{
d = new WPGFileStreamPrivate;
d->file.open( filename, std::ios::binary | std::ios::in );
}
WPGFileStream::~WPGFileStream()
{
delete d;
}
unsigned char WPGFileStream::getc()
{
return d->file.get();
}
long WPGFileStream::read(long nbytes, char* buffer)
{
long nread = 0;
if(d->file.good())
{
long curpos = d->file.tellg();
d->file.read(buffer, nbytes);
nread = (long)d->file.tellg() - curpos;
}
return nread;
}
long WPGFileStream::tell()
{
return d->file.good() ? (long)d->file.tellg() : -1L;
}
void WPGFileStream::seek(long offset)
{
if(d->file.good())
d->file.seekg(offset);
}
bool WPGFileStream::atEnd()
{
return d->file.eof();
}
bool WPGFileStream::isOle()
{
if (d->buffer.str().empty())
d->buffer << d->file.rdbuf();
Storage tmpStorage( d->buffer );
if (tmpStorage.isOle())
return true;
return false;
}
WPGInputStream* WPGFileStream::getWPGOleStream()
{
if (d->buffer.str().empty())
d->buffer << d->file.rdbuf();
Storage *tmpStorage = new Storage( d->buffer );
Stream tmpStream( tmpStorage, "PerfectOffice_MAIN" );
if (!tmpStorage || (tmpStorage->result() != Storage::Ok) || !tmpStream.size())
{
if (tmpStorage)
delete tmpStorage;
return (WPGInputStream*)0;
}
unsigned char *tmpBuffer = new unsigned char[tmpStream.size()];
unsigned long tmpLength;
tmpLength = tmpStream.read(tmpBuffer, tmpStream.size());
// sanity check
if (tmpLength > tmpStream.size() || tmpLength < tmpStream.size())
/* something went wrong here and we do not trust the
resulting buffer */
{
if (tmpStorage)
delete tmpStorage;
return (WPGInputStream*)0;
}
delete tmpStorage;
return new WPGMemoryStream((const char *)tmpBuffer, tmpLength);
}
WPGMemoryStream::WPGMemoryStream(const char *data, const unsigned int dataSize)
{
d = new WPGMemoryStreamPrivate(std::string(data, dataSize));
}
WPGMemoryStream::~WPGMemoryStream()
{
delete d;
}
unsigned char WPGMemoryStream::getc()
{
return d->buffer.get();
}
long WPGMemoryStream::read(long nbytes, char* buffer)
{
long nread = 0;
if(d->buffer.good())
{
long curpos = d->buffer.tellg();
d->buffer.read(buffer, nbytes);
nread = (long)d->buffer.tellg() - curpos;
}
return nread;
}
long WPGMemoryStream::tell()
{
return d->buffer.good() ? (long)d->buffer.tellg() : -1L;
}
void WPGMemoryStream::seek(long offset)
{
if(d->buffer.good())
d->buffer.seekg(offset);
}
bool WPGMemoryStream::atEnd()
{
return d->buffer.eof();
}
bool WPGMemoryStream::isOle()
{
Storage tmpStorage( d->buffer );
if (tmpStorage.isOle())
return true;
return false;
}
WPGInputStream* WPGMemoryStream::getWPGOleStream()
{
Storage *tmpStorage = new Storage( d->buffer );
Stream tmpStream( tmpStorage, "PerfectOffice_MAIN" );
if (!tmpStorage || (tmpStorage->result() != Storage::Ok) || !tmpStream.size())
{
if (tmpStorage)
delete tmpStorage;
return (WPGInputStream*)0;
}
unsigned char *tmpBuffer = new unsigned char[tmpStream.size()];
unsigned long tmpLength;
tmpLength = tmpStream.read(tmpBuffer, tmpStream.size());
// sanity check
if (tmpLength > tmpStream.size() || tmpLength < tmpStream.size())
/* something went wrong here and we do not trust the
resulting buffer */
{
if (tmpStorage)
delete tmpStorage;
return (WPGInputStream*)0;
}
delete tmpStorage;
return new WPGMemoryStream((const char *)tmpBuffer, tmpLength);
}
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