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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* This file is part of the libsw602 project.
*
* 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/.
*/
#include <libsw602/SW602Document.h>
#include <cassert>
#include <boost/scoped_ptr.hpp>
#include <boost/shared_ptr.hpp>
#include <librevenge-stream/librevenge-stream.h>
#include "T602Header.h"
#include "T602Parser.h"
#include "WinText602Header.h"
#include "WinText602Parser.h"
using librevenge::RVNGInputStream;
using std::string;
namespace libsw602
{
namespace
{
struct DetectionInfo
{
DetectionInfo();
SW602Document::Kind m_kind;
SW602Document::Type m_type;
SW602Document::Confidence m_confidence;
bool m_needsEncoding;
};
DetectionInfo::DetectionInfo()
: m_kind(SW602Document::KIND_UNKNOWN)
, m_type(SW602Document::TYPE_UNKNOWN)
, m_confidence(SW602Document::CONFIDENCE_NONE)
, m_needsEncoding(false)
{
}
template<class Header>
void fillDetectionInfo(const Header &header, DetectionInfo &info);
void fillDetectionInfo(const WinText602Header &/*header*/, DetectionInfo &info)
{
info.m_kind = SW602Document::KIND_TEXT;
info.m_type = SW602Document::TYPE_WINTEXT602;
info.m_needsEncoding = false;
// TODO: handle encryption
info.m_confidence = SW602Document::CONFIDENCE_EXCELLENT;
}
template<class Header>
bool probe(RVNGInputStream &input, DetectionInfo &info) try
{
input.seek(0, librevenge::RVNG_SEEK_SET);
Header header;
header.construct(input);
if (header.isValid())
{
fillDetectionInfo(header, info);
assert(m_kind != SW602Document::KIND_UNKNOWN);
assert(m_type != SW602Document::TYPE_UNKNOWN);
}
return info.m_confidence != SW602Document::CONFIDENCE_NONE;
}
catch (...)
{
return false;
}
SW602Document::Confidence pass(const DetectionInfo &info, SW602Document::Kind &kind, SW602Document::Type *const type, bool *const needsEncoding)
{
kind = info.m_kind;
if (type)
*type = info.m_type;
if (needsEncoding)
*needsEncoding = info.m_needsEncoding;
return info.m_confidence;
}
}
SW602Document::Confidence SW602Document::isSupported(librevenge::RVNGInputStream *const input, Kind &kind, Type *const type, bool *const needsEncoding) try
{
if (!input)
return CONFIDENCE_NONE;
DetectionInfo info;
if (input->isStructured())
{
if (input->existsSubStream("CONTENTS"))
{
const boost::scoped_ptr<RVNGInputStream> content(input->getSubStreamByName("CONTENTS"));
if (bool(content))
{
if (probe<WinText602Header>(*content, info))
return pass(info, kind, type, needsEncoding);
}
}
}
return CONFIDENCE_NONE;
}
catch (...)
{
return CONFIDENCE_NONE;
}
SW602Document::Result SW602Document::parse(librevenge::RVNGInputStream *const input, librevenge::RVNGTextInterface *const document, const char *const password)
{
return parse(input, document, TYPE_UNKNOWN, ENCODING_UNSPECIFIED, password);
}
SW602Document::Result SW602Document::parse(librevenge::RVNGInputStream *const input, librevenge::RVNGTextInterface *const document, const Type type, const char *const password)
{
return parse(input, document, type, ENCODING_UNSPECIFIED, password);
}
SW602Document::Result SW602Document::parse(librevenge::RVNGInputStream *const input, librevenge::RVNGTextInterface *const document, const Encoding encoding, const char *const password)
{
return parse(input, document, TYPE_UNKNOWN, encoding, password);
}
SW602Document::Result SW602Document::parse(librevenge::RVNGInputStream *const input, librevenge::RVNGTextInterface *const document, Type type, Encoding /*encoding*/, const char * /*password*/) try
{
if (!document)
return RESULT_OK;
if (!input)
return RESULT_PARSE_ERROR;
if (type == TYPE_UNKNOWN)
{
Kind kind = KIND_UNKNOWN;
const Confidence confidence = SW602Document::isSupported(input, kind, &type);
if ((kind != KIND_TEXT) || ((confidence != CONFIDENCE_EXCELLENT) && (confidence != CONFIDENCE_SUPPORTED_ENCRYPTION)))
return RESULT_UNSUPPORTED_FORMAT;
}
switch (type)
{
case TYPE_WINTEXT602:
{
if (!input->existsSubStream("CONTENTS"))
return RESULT_UNSUPPORTED_FORMAT;
const boost::shared_ptr<RVNGInputStream> content(input->getSubStreamByName("CONTENTS"));
if (!content)
return RESULT_UNSUPPORTED_FORMAT;
WinText602Parser parser(content);
parser.parse(document);
return RESULT_OK;
}
default:
return RESULT_UNSUPPORTED_FORMAT;
}
return RESULT_UNKNOWN_ERROR;
}
catch (...)
{
return RESULT_UNKNOWN_ERROR;
}
SW602Document::Result SW602Document::parse(librevenge::RVNGInputStream *input, librevenge::RVNGSpreadsheetInterface *document, const char *password)
{
return parse(input, document, TYPE_UNKNOWN, ENCODING_UNSPECIFIED, password);
}
SW602Document::Result SW602Document::parse(librevenge::RVNGInputStream *input, librevenge::RVNGSpreadsheetInterface *document, Type type, const char *password)
{
return parse(input, document, type, ENCODING_UNSPECIFIED, password);
}
SW602Document::Result SW602Document::parse(librevenge::RVNGInputStream *input, librevenge::RVNGSpreadsheetInterface *document, Encoding encoding, const char *password)
{
return parse(input, document, TYPE_UNKNOWN, encoding, password);
}
SW602Document::Result SW602Document::parse(librevenge::RVNGInputStream * /*input*/, librevenge::RVNGSpreadsheetInterface * /*document*/, Type /*type*/, Encoding /*encoding*/, const char * /*password*/) try
{
// TODO: implement me
return RESULT_UNKNOWN_ERROR;
}
catch (...)
{
return RESULT_UNKNOWN_ERROR;
}
} // namespace libsw602
/* vim:set shiftwidth=2 softtabstop=2 expandtab: */
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