/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* libwpd
* Version: MPL 2.0 / LGPLv2.1+
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* Major Contributor(s):
* Copyright (C) 2004 Marc Maurer (uwog@uwog.net)
* Copyright (C) 2004 Fridrich Strba (fridrich.strba@bluewin.ch)
*
* For minor contributions see the git repository.
*
* Alternatively, the contents of this file may be used under the terms
* of the GNU Lesser General Public License Version 2.1 or later
* (LGPLv2.1+), in which case the provisions of the LGPLv2.1+ are
* applicable instead of those above.
*
* For further information visit http://libwpd.sourceforge.net
*/
/* "This product is not manufactured, approved, or supported by
* Corel Corporation or Corel Corporation Limited."
*/
#include "WP3Parser.h"
#include <memory>
#include "WPXHeader.h"
#include "WP3Part.h"
#include "WP3ContentListener.h"
#include "WP3StylesListener.h"
#include "WP3ResourceFork.h"
#include "libwpd_internal.h"
#include "WPXTable.h"
WP3Parser::WP3Parser(librevenge::RVNGInputStream *input, WPXHeader *header, WPXEncryption *encryption) :
WPXParser(input, header, encryption)
{
}
WP3Parser::~WP3Parser()
{
}
WP3ResourceFork *WP3Parser::getResourceFork(librevenge::RVNGInputStream *input, WPXEncryption *encryption)
{
// Certain WP2 documents actually don't contain resource fork, so check for its existence
if (!getHeader() || getHeader()->getDocumentOffset() <= 0x10)
{
WPD_DEBUG_MSG(("WP3Parser: Document does not contain resource fork\n"));
return nullptr;
}
return new WP3ResourceFork(input, encryption);
}
void WP3Parser::parse(librevenge::RVNGInputStream *input, WPXEncryption *encryption, WP3Listener *listener)
{
listener->startDocument();
input->seek(getHeader()->getDocumentOffset(), librevenge::RVNG_SEEK_SET);
WPD_DEBUG_MSG(("WordPerfect: Starting document body parse (position = %ld)\n",(long)input->tell()));
parseDocument(input, encryption, listener);
listener->endDocument();
}
// parseDocument: parses a document body (may call itself recursively, on other streams, or itself)
void WP3Parser::parseDocument(librevenge::RVNGInputStream *input, WPXEncryption *encryption, WP3Listener *listener)
{
while (!input->isEnd())
{
unsigned char readVal;
readVal = readU8(input, encryption);
if (readVal == 0 || readVal == 0x7F || readVal == 0xFF)
{
// FIXME: VERIFY: is this IF clause correct? (0xFF seems to be OK at least)
// do nothing: this token is meaningless and is likely just corruption
}
else if (readVal >= (unsigned char)0x01 && readVal <= (unsigned char)0x1F)
{
// control characters ?
}
else if (readVal >= (unsigned char)0x20 && readVal <= (unsigned char)0x7E)
{
listener->insertCharacter(readVal);
}
else
{
std::unique_ptr<WP3Part> part(WP3Part::constructPart(input, encryption, readVal));
if (part)
part->parse(listener);
}
}
}
void WP3Parser::parse(librevenge::RVNGTextInterface *textInterface)
{
librevenge::RVNGInputStream *input = getInput();
WPXEncryption *encryption = getEncryption();
std::list<WPXPageSpan> pageList;
WPXTableList tableList;
WP3ResourceFork *resourceFork = nullptr;
std::vector<WP3SubDocument *> subDocuments;
try
{
resourceFork = getResourceFork(input, encryption);
// do a "first-pass" parse of the document
// gather table border information, page properties (per-page)
WP3StylesListener stylesListener(pageList, tableList, subDocuments);
stylesListener.setResourceFork(resourceFork);
parse(input, encryption, &stylesListener);
// postprocess the pageList == remove duplicate page spans due to the page breaks
std::list<WPXPageSpan>::iterator previousPage = pageList.begin();
for (std::list<WPXPageSpan>::iterator Iter=pageList.begin(); Iter != pageList.end(); /* Iter++ */)
{
if ((Iter != previousPage) && (*previousPage==*Iter))
{
(*previousPage).setPageSpan((*previousPage).getPageSpan() + (*Iter).getPageSpan());
Iter = pageList.erase(Iter);
}
else
{
previousPage = Iter;
++Iter;
}
}
// second pass: here is where we actually send the messages to the target app
// that are necessary to emit the body of the target document
WP3ContentListener listener(pageList, subDocuments, textInterface); // FIXME: SHOULD BE CONTENT_LISTENER, AND SHOULD BE PASSED TABLE DATA!
listener.setResourceFork(resourceFork);
parse(input, encryption, &listener);
// cleanup section: free the used resources
for (auto &subDocument : subDocuments)
{
if (subDocument)
delete subDocument;
}
delete resourceFork;
}
catch (FileException)
{
WPD_DEBUG_MSG(("WordPerfect: File Exception. Parse terminated prematurely."));
for (auto &subDocument : subDocuments)
{
if (subDocument)
delete subDocument;
}
delete resourceFork;
throw FileException();
}
}
void WP3Parser::parseSubDocument(librevenge::RVNGTextInterface *textInterface)
{
std::list<WPXPageSpan> pageList;
WPXTableList tableList;
std::vector<WP3SubDocument *> subDocuments;
librevenge::RVNGInputStream *input = getInput();
try
{
WP3StylesListener stylesListener(pageList, tableList, subDocuments);
stylesListener.startSubDocument();
parseDocument(input, nullptr, &stylesListener);
stylesListener.endSubDocument();
input->seek(0, librevenge::RVNG_SEEK_SET);
WP3ContentListener listener(pageList, subDocuments, textInterface);
listener.startSubDocument();
parseDocument(input, nullptr, &listener);
listener.endSubDocument();
for (auto &subDocument : subDocuments)
if (subDocument)
delete subDocument;
}
catch (FileException)
{
WPD_DEBUG_MSG(("WordPerfect: File Exception. Parse terminated prematurely."));
for (auto &subDocument : subDocuments)
if (subDocument)
delete subDocument;
throw FileException();
}
}
/* vim:set shiftwidth=4 softtabstop=4 noexpandtab: */