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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 "WPGraphics.h"
#include "WPGHeader.h"
#include "WPGStream.h"
#include "WPGXParser.h"
#include "WPG1Parser.h"
#include "WPG2Parser.h"
#include "libwpg_utils.h"
#include "WPGSVGGenerator.h"
#include <sstream>
/**
Analyzes the content of an input stream to see if it can be parsed
\param input The input stream
\return A value that indicates whether the content from the input
stream is a WordPerfect Graphics that libwpg is able to parse
*/
bool libwpg::WPGraphics::isSupported(libwpg::WPGInputStream* input)
{
WPGHeader header;
if(!header.load(input))
return false;
return header.isSupported();
}
/**
Parses the input stream content. It will make callbacks to the functions provided by a
WPGPaintInterface class implementation when needed. This is often commonly called the
'main parsing routine'.
\param input The input stream
\param painter A WPGPainterInterface implementation
\return A value that indicates whether the parsing was successful
*/
bool libwpg::WPGraphics::parse(libwpg::WPGInputStream* input, libwpg::WPGPaintInterface* painter)
{
WPGXParser *parser = 0;
WPG_DEBUG_MSG(("Loading header...\n"));
WPGHeader header;
if(!header.load(input))
return false;
if(!header.isSupported())
{
WPG_DEBUG_MSG(("Unsupported file format!\n"));
return false;
}
// seek to the start of document
input->seek(header.startOfDocument());
bool retval;
switch (header.majorVersion()) {
case 0x01: // WPG1
WPG_DEBUG_MSG(("Parsing WPG1\n"));
parser = new WPG1Parser(input, painter);
retval = parser->parse();
break;
case 0x02: // WPG2
WPG_DEBUG_MSG(("Parsing WPG2\n"));
parser = new WPG2Parser(input, painter);
retval = parser->parse();
break;
default: // other :-)
WPG_DEBUG_MSG(("Unknown format\n"));
return false;
}
if (parser)
delete parser;
return retval;
}
/**
Parses the input stream content and generates a valid Scalable Vector Graphics
Provided as a convenience function for applications that support SVG internally.
\param input The input stream
\param output The output string whose content is the resulting SVG
\return A value that indicates whether the SVG generation was successful.
*/
bool libwpg::WPGraphics::generateSVG(libwpg::WPGInputStream* input, libwpg::WPGString& output)
{
std::ostringstream tmpOutputStream;
libwpg::WPGSVGGenerator generator(tmpOutputStream);
bool result;
if (result = libwpg::WPGraphics::parse(input, &generator))
output = WPGString(tmpOutputStream.str().c_str());
else
output = WPGString("");
return result;
}
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