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mdx.cc
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/* This file is (c) 2013 Timon Wong <timon86.wang AT gmail DOT com>
* Part of GoldenDict. Licensed under GPLv3 or later, see the LICENSE file */
#include "mdx.hh"
#include "btreeidx.hh"
#include "folding.hh"
#include "utf8.hh"
#include "file.hh"
#include "wstring.hh"
#include "wstring_qt.hh"
#include "chunkedstorage.hh"
#include "gddebug.hh"
#include "langcoder.hh"
#include "fsencoding.hh"
#include "audiolink.hh"
#include "ex.hh"
#include "mdictparser.hh"
#include "filetype.hh"
#include "ftshelpers.hh"
#include "htmlescape.hh"
#include <algorithm>
#include <map>
#include <set>
#include <list>
#include <ctype.h>
#include <stdlib.h>
#ifdef _MSC_VER
#include <stub_msvc.h>
#endif
#include <QDir>
#include <QString>
#include <QSemaphore>
#include <QThreadPool>
#include <QAtomicInt>
#include <QTextDocument>
#include <QCryptographicHash>
#include "qt4x5.hh"
namespace Mdx
{
using std::map;
using std::multimap;
using std::set;
using gd::wstring;
using gd::wchar;
using std::list;
using std::pair;
using std::string;
using BtreeIndexing::WordArticleLink;
using BtreeIndexing::IndexedWords;
using BtreeIndexing::IndexInfo;
using namespace Mdict;
enum
{
kSignature = 0x4349444d, // MDIC
kCurrentFormatVersion = 10 + BtreeIndexing::FormatVersion + Folding::Version
};
DEF_EX( exCorruptDictionary, "dictionary file was tampered or corrupted", std::exception )
struct IdxHeader
{
uint32_t signature; // First comes the signature, MDIC
uint32_t formatVersion; // File format version, currently 1.
uint32_t parserVersion; // Version of the parser used to parse the MDIC file.
// Version of the folding algorithm used when building
// index. If it's different from the current one,
// the file is to be rebuilt.
uint32_t foldingVersion;
uint32_t articleCount; // Total number of articles, for informative purposes only
uint32_t wordCount; // Total number of words, for informative purposes only
uint32_t isRightToLeft; // Right to left
uint32_t chunksOffset; // The offset to chunks' storage
uint32_t descriptionAddress; // Address of the dictionary description in the chunks' storage
uint32_t descriptionSize; // Size of the description in the chunks' storage, 0 = no description
uint32_t styleSheetAddress;
uint32_t styleSheetCount;
uint32_t indexBtreeMaxElements; // Two fields from IndexInfo
uint32_t indexRootOffset;
uint32_t langFrom; // Source language
uint32_t langTo; // Target language
uint32_t mddIndexInfosOffset; // address of IndexInfos for resource files (.mdd)
uint32_t mddIndexInfosCount; // count of IndexInfos for resource files
}
#ifndef _MSC_VER
__attribute__( ( packed ) )
#endif
;
// A helper method to read resources from .mdd file
class IndexedMdd: public BtreeIndexing::BtreeIndex
{
Mutex & idxMutex;
Mutex fileMutex;
ChunkedStorage::Reader & chunks;
QFile mddFile;
bool isFileOpen;
public:
IndexedMdd( Mutex & idxMutex, ChunkedStorage::Reader & chunks ):
idxMutex( idxMutex ),
chunks( chunks ),
isFileOpen( false )
{}
/// Opens the index. The values are those previously returned by buildIndex().
using BtreeIndexing::BtreeIndex::openIndex;
/// Opens the mdd file itself. Returns true if succeeded, false otherwise.
bool open( const char * fileName )
{
mddFile.setFileName( QString::fromUtf8( fileName ) );
isFileOpen = mddFile.open( QFile::ReadOnly );
return isFileOpen;
}
/// Returns true if the mdd is open, false otherwise.
inline bool isOpen() const
{
return isFileOpen;
}
/// Checks whether the given file exists in the mdd file or not.
/// Note that this function is thread-safe, since it does not access mdd file.
bool hasFile( gd::wstring const & name )
{
if ( !isFileOpen )
return false;
vector< WordArticleLink > links = findArticles( name );
return !links.empty();
}
/// Attempts loading the given file into the given vector. Returns true on
/// success, false otherwise.
bool loadFile( gd::wstring const & name, std::vector< char > & result )
{
if ( !isFileOpen )
return false;
vector< WordArticleLink > links = findArticles( name );
if ( links.empty() )
return false;
MdictParser::RecordInfo indexEntry;
vector< char > chunk;
Mutex::Lock _( idxMutex );
const char * indexEntryPtr = chunks.getBlock( links[ 0 ].articleOffset, chunk );
memcpy( &indexEntry, indexEntryPtr, sizeof( indexEntry ) );
ScopedMemMap compressed( mddFile, indexEntry.compressedBlockPos, indexEntry.compressedBlockSize );
if ( !compressed.startAddress() )
{
return false;
}
QByteArray decompressed;
if ( !MdictParser::parseCompressedBlock( indexEntry.compressedBlockSize, ( char * )compressed.startAddress(),
indexEntry.decompressedBlockSize, decompressed ) )
{
return false;
}
result.resize( indexEntry.recordSize );
memcpy( &result.front(), decompressed.constData() + indexEntry.recordOffset, indexEntry.recordSize );
return true;
}
};
class MdxDictionary: public BtreeIndexing::BtreeDictionary
{
Mutex idxMutex;
File::Class idx;
IdxHeader idxHeader;
string dictionaryName;
string encoding;
ChunkedStorage::Reader chunks;
QFile dictFile;
vector< sptr< IndexedMdd > > mddResources;
MdictParser::StyleSheets styleSheets;
QAtomicInt deferredInitDone;
Mutex deferredInitMutex;
bool deferredInitRunnableStarted;
QSemaphore deferredInitRunnableExited;
string initError;
public:
MdxDictionary( string const & id, string const & indexFile, vector<string> const & dictionaryFiles );
~MdxDictionary();
virtual void deferredInit();
virtual string getName() throw()
{
return dictionaryName;
}
virtual map< Dictionary::Property, string > getProperties() throw()
{
return map< Dictionary::Property, string >();
}
virtual unsigned long getArticleCount() throw()
{
return idxHeader.articleCount;
}
virtual unsigned long getWordCount() throw()
{
return idxHeader.wordCount;
}
inline virtual quint32 getLangFrom() const
{
return idxHeader.langFrom;
}
inline virtual quint32 getLangTo() const
{
return idxHeader.langTo;
}
virtual sptr< Dictionary::DataRequest > getArticle( wstring const & word,
vector< wstring > const & alts,
wstring const & ) throw( std::exception );
virtual sptr< Dictionary::DataRequest > getResource( string const & name ) throw( std::exception );
virtual QString const & getDescription();
virtual sptr< Dictionary::DataRequest > getSearchResults( QString const & searchString,
int searchMode, bool matchCase,
int distanceBetweenWords,
int maxResults );
virtual void getArticleText( uint32_t articleAddress, QString & headword, QString & text );
virtual void makeFTSIndex(QAtomicInt & isCancelled, bool firstIteration );
virtual void setFTSParameters( Config::FullTextSearch const & fts )
{
if( ensureInitDone().size() )
return;
can_FTS = fts.enabled
&& !fts.disabledTypes.contains( "MDICT", Qt::CaseInsensitive )
&& ( fts.maxDictionarySize == 0 || getArticleCount() <= fts.maxDictionarySize );
}
protected:
virtual void loadIcon() throw();
private:
virtual string const & ensureInitDone();
void doDeferredInit();
/// Loads an article with the given offset, filling the given strings.
void loadArticle( uint32_t offset, string & articleText, bool noFilter = false );
/// Process resource links (images, audios, etc)
QString & filterResource( QString const & articleId, QString & article );
friend class MdxHeadwordsRequest;
friend class MdxArticleRequest;
friend class MddResourceRequest;
friend class MdxDeferredInitRunnable;
};
MdxDictionary::MdxDictionary( string const & id, string const & indexFile,
vector<string> const & dictionaryFiles ):
BtreeDictionary( id, dictionaryFiles ),
idx( indexFile, "rb" ),
idxHeader( idx.read< IdxHeader >() ),
chunks( idx, idxHeader.chunksOffset ),
deferredInitRunnableStarted( false )
{
// Read the dictionary's name
idx.seek( sizeof( idxHeader ) );
size_t len = idx.read< uint32_t >();
vector< char > buf( len );
idx.read( &buf.front(), len );
dictionaryName = string( &buf.front(), len );
// then read the dictionary's encoding
len = idx.read< uint32_t >();
buf.resize( len );
idx.read( &buf.front(), len );
encoding = string( &buf.front(), len );
dictFile.setFileName( QString::fromUtf8( dictionaryFiles[ 0 ].c_str() ) );
dictFile.open( QIODevice::ReadOnly );
// Full-text search parameters
can_FTS = true;
ftsIdxName = indexFile + "_FTS";
if( !Dictionary::needToRebuildIndex( dictionaryFiles, ftsIdxName )
&& !FtsHelpers::ftsIndexIsOldOrBad( ftsIdxName, this ) )
FTS_index_completed.ref();
}
MdxDictionary::~MdxDictionary()
{
Mutex::Lock _( deferredInitMutex );
// Wait for init runnable to complete if it was ever started
if ( deferredInitRunnableStarted )
deferredInitRunnableExited.acquire();
dictFile.close();
}
//////// MdxDictionary::deferredInit()
class MdxDeferredInitRunnable: public QRunnable
{
MdxDictionary & dictionary;
QSemaphore & hasExited;
public:
MdxDeferredInitRunnable( MdxDictionary & dictionary_,
QSemaphore & hasExited_ ):
dictionary( dictionary_ ), hasExited( hasExited_ )
{}
~MdxDeferredInitRunnable()
{
hasExited.release();
}
virtual void run()
{
dictionary.doDeferredInit();
}
};
void MdxDictionary::deferredInit()
{
if ( !Qt4x5::AtomicInt::loadAcquire( deferredInitDone ) )
{
Mutex::Lock _( deferredInitMutex );
if ( Qt4x5::AtomicInt::loadAcquire( deferredInitDone ) )
return;
if ( !deferredInitRunnableStarted )
{
QThreadPool::globalInstance()->start(
new MdxDeferredInitRunnable( *this, deferredInitRunnableExited ),
-1000 );
deferredInitRunnableStarted = true;
}
}
}
string const & MdxDictionary::ensureInitDone()
{
doDeferredInit();
return initError;
}
void MdxDictionary::doDeferredInit()
{
if ( !Qt4x5::AtomicInt::loadAcquire( deferredInitDone ) )
{
Mutex::Lock _( deferredInitMutex );
if ( Qt4x5::AtomicInt::loadAcquire( deferredInitDone ) )
return;
// Do deferred init
try
{
// Retrieve stylesheets
idx.seek( idxHeader.styleSheetAddress );
for ( uint32_t i = 0; i < idxHeader.styleSheetCount; i++ )
{
qint32 key = idx.read< qint32 >();
vector< char > buf;
quint32 sz;
sz = idx.read< quint32 >();
buf.resize( sz );
idx.read( &buf.front(), sz );
QString styleBegin = QString::fromUtf8( buf.data() );
sz = idx.read< quint32 >();
buf.resize( sz );
idx.read( &buf.front(), sz );
QString styleEnd = QString::fromUtf8( buf.data() );
styleSheets[ key ] = pair<QString, QString>( styleBegin, styleEnd );
}
// Initialize the index
openIndex( IndexInfo( idxHeader.indexBtreeMaxElements,
idxHeader.indexRootOffset ), idx, idxMutex );
vector< string > mddFileNames;
vector< IndexInfo > mddIndexInfos;
idx.seek( idxHeader.mddIndexInfosOffset );
for ( uint32_t i = 0; i < idxHeader.mddIndexInfosCount; i++ )
{
quint32 sz = idx.read< quint32 >();
vector< char > buf( sz );
idx.read( &buf.front(), sz );
uint32_t btreeMaxElements = idx.read<uint32_t>();
uint32_t rootOffset = idx.read<uint32_t>();
mddFileNames.push_back( string( &buf.front() ) );
mddIndexInfos.push_back( IndexInfo( btreeMaxElements, rootOffset ) );
}
vector< string > const dictFiles = getDictionaryFilenames();
for ( uint32_t i = 1; i < dictFiles.size() && i < mddFileNames.size() + 1; i++ )
{
QFileInfo fi( QString::fromUtf8( dictFiles[ i ].c_str() ) );
QString mddFileName = QString::fromUtf8( mddFileNames[ i - 1 ].c_str() );
if ( fi.fileName() != mddFileName || !fi.exists() )
continue;
sptr< IndexedMdd > mdd = new IndexedMdd( idxMutex, chunks );
mdd->openIndex( mddIndexInfos[ i - 1 ], idx, idxMutex );
mdd->open( dictFiles[ i ].c_str() );
mddResources.push_back( mdd );
}
}
catch ( std::exception & e )
{
initError = e.what();
}
catch ( ... )
{
initError = "Unknown error";
}
deferredInitDone.ref();
}
}
void MdxDictionary::makeFTSIndex( QAtomicInt & isCancelled, bool firstIteration )
{
if( !( Dictionary::needToRebuildIndex( getDictionaryFilenames(), ftsIdxName )
|| FtsHelpers::ftsIndexIsOldOrBad( ftsIdxName, this ) ) )
FTS_index_completed.ref();
if( haveFTSIndex() )
return;
if( ensureInitDone().size() )
return;
if( firstIteration && getArticleCount() > FTS::MaxDictionarySizeForFastSearch )
return;
gdDebug( "MDict: Building the full-text index for dictionary: %s\n",
getName().c_str() );
try
{
FtsHelpers::makeFTSIndex( this, isCancelled );
FTS_index_completed.ref();
}
catch( std::exception &ex )
{
gdWarning( "MDict: Failed building full-text search index for \"%s\", reason: %s\n", getName().c_str(), ex.what() );
QFile::remove( FsEncoding::decode( ftsIdxName.c_str() ) );
}
}
void MdxDictionary::getArticleText( uint32_t articleAddress, QString & headword, QString & text )
{
try
{
headword.clear();
string articleText;
loadArticle( articleAddress, articleText, true );
text = Html::unescape( QString::fromUtf8( articleText.data(), articleText.size() ) );
}
catch( std::exception &ex )
{
gdWarning( "MDict: Failed retrieving article from \"%s\", reason: %s\n", getName().c_str(), ex.what() );
}
}
sptr< Dictionary::DataRequest > MdxDictionary::getSearchResults( QString const & searchString,
int searchMode, bool matchCase,
int distanceBetweenWords,
int maxResults )
{
return new FtsHelpers::FTSResultsRequest( *this, searchString,searchMode, matchCase, distanceBetweenWords, maxResults );
}
/// MdxDictionary::getArticle
class MdxArticleRequest;
class MdxArticleRequestRunnable: public QRunnable
{
MdxArticleRequest & r;
QSemaphore & hasExited;
public:
MdxArticleRequestRunnable( MdxArticleRequest & r_,
QSemaphore & hasExited_ ):
r( r_ ),
hasExited( hasExited_ )
{}
~MdxArticleRequestRunnable()
{
hasExited.release();
}
virtual void run();
};
class MdxArticleRequest: public Dictionary::DataRequest
{
friend class MdxArticleRequestRunnable;
wstring word;
vector< wstring > alts;
MdxDictionary & dict;
QAtomicInt isCancelled;
QSemaphore hasExited;
public:
MdxArticleRequest( wstring const & word_,
vector< wstring > const & alts_,
MdxDictionary & dict_ ):
word( word_ ),
alts( alts_ ),
dict( dict_ )
{
QThreadPool::globalInstance()->start( new MdxArticleRequestRunnable( *this, hasExited ) );
}
void run();
virtual void cancel()
{
isCancelled.ref();
}
~MdxArticleRequest()
{
isCancelled.ref();
hasExited.acquire();
}
};
void MdxArticleRequestRunnable::run()
{
r.run();
}
void MdxArticleRequest::run()
{
if ( Qt4x5::AtomicInt::loadAcquire( isCancelled ) )
{
finish();
return;
}
if ( dict.ensureInitDone().size() )
{
setErrorString( QString::fromUtf8( dict.ensureInitDone().c_str() ) );
finish();
return;
}
vector< WordArticleLink > chain = dict.findArticles( word );
for ( unsigned x = 0; x < alts.size(); ++x )
{
/// Make an additional query for each alt
vector< WordArticleLink > altChain = dict.findArticles( alts[ x ] );
chain.insert( chain.end(), altChain.begin(), altChain.end() );
}
// Some synonims make it that the articles appear several times. We combat this
// by only allowing them to appear once.
set< uint32_t > articlesIncluded;
// Sometimes the articles are physically duplicated. We store hashes of
// the bodies to account for this.
set< QByteArray > articleBodiesIncluded;
string articleText;
for ( unsigned x = 0; x < chain.size(); ++x )
{
if ( Qt4x5::AtomicInt::loadAcquire( isCancelled ) )
{
finish();
return;
}
if ( articlesIncluded.find( chain[ x ].articleOffset ) != articlesIncluded.end() )
continue; // We already have this article in the body.
// Grab that article
string articleBody;
bool hasError = false;
QString errorMessage;
try
{
dict.loadArticle( chain[ x ].articleOffset, articleBody );
}
catch ( exCorruptDictionary & )
{
errorMessage = tr( "Dictionary file was tampered or corrupted" );
hasError = true;
}
catch ( std::exception & e )
{
errorMessage = e.what();
hasError = true;
}
if ( hasError )
{
setErrorString( tr( "Failed loading article from %1, reason: %2" )
.arg( QString::fromUtf8( dict.getDictionaryFilenames()[ 0 ].c_str() ) )
.arg( errorMessage ) );
finish();
return;
}
if ( articlesIncluded.find( chain[ x ].articleOffset ) != articlesIncluded.end() )
continue; // We already have this article in the body.
QCryptographicHash hash( QCryptographicHash::Md5 );
hash.addData( articleBody.data(), articleBody.size() );
if ( !articleBodiesIncluded.insert( hash.result() ).second )
continue; // Already had this body
// Handle internal redirects
if ( strncmp( articleBody.c_str(), "@@@LINK=", 8 ) == 0 )
{
wstring target = Utf8::decode( articleBody.c_str() + 8 );
target = Folding::trimWhitespace( target );
// Make an additional query for this redirection
vector< WordArticleLink > altChain = dict.findArticles( target );
chain.insert( chain.end(), altChain.begin(), altChain.end() );
continue;
}
// See Issue #271: A mechanism to clean-up invalid HTML cards.
string cleaner = "</font>""</font>""</font>""</font>""</font>""</font>"
"</font>""</font>""</font>""</font>""</font>""</font>"
"</b></b></b></b></b></b></b></b>"
"</i></i></i></i></i></i></i></i>"
"</a></a></a></a></a></a></a></a>";
articleText += "<div class=\"mdict\">" + articleBody + cleaner + "</div>\n";
hasAnyData = true;
}
if ( hasAnyData )
{
Mutex::Lock _( dataMutex );
data.insert( data.end(), articleText.begin(), articleText.end() );
}
finish();
}
sptr<Dictionary::DataRequest> MdxDictionary::getArticle( const wstring & word, const vector<wstring> & alts,
const wstring & ) throw( std::exception )
{
return new MdxArticleRequest( word, alts, *this );
}
/// MdxDictionary::getResource
class MddResourceRequest;
class MddResourceRequestRunnable: public QRunnable
{
MddResourceRequest & r;
QSemaphore & hasExited;
public:
MddResourceRequestRunnable( MddResourceRequest & r_,
QSemaphore & hasExited_ ): r( r_ ),
hasExited( hasExited_ )
{}
~MddResourceRequestRunnable()
{
hasExited.release();
}
virtual void run();
};
class MddResourceRequest: public Dictionary::DataRequest
{
friend class MddResourceRequestRunnable;
MdxDictionary & dict;
wstring resourceName;
QAtomicInt isCancelled;
QSemaphore hasExited;
public:
MddResourceRequest( MdxDictionary & dict_,
string const & resourceName_ ):
dict( dict_ ),
resourceName( Utf8::decode( resourceName_ ) )
{
QThreadPool::globalInstance()->start( new MddResourceRequestRunnable( *this, hasExited ) );
}
void run(); // Run from another thread by MddResourceRequestRunnable
virtual void cancel()
{
isCancelled.ref();
}
~MddResourceRequest()
{
isCancelled.ref();
hasExited.acquire();
}
};
void MddResourceRequestRunnable::run()
{
r.run();
}
void MddResourceRequest::run()
{
if ( Qt4x5::AtomicInt::loadAcquire( isCancelled ) )
{
finish();
return;
}
if ( dict.ensureInitDone().size() )
{
setErrorString( QString::fromUtf8( dict.ensureInitDone().c_str() ) );
finish();
return;
}
// In order to prevent recursive internal redirection...
set< QByteArray > resourceIncluded;
for ( ;; )
{
// Some runnables linger enough that they are cancelled before they start
if ( Qt4x5::AtomicInt::loadAcquire( isCancelled ) )
{
finish();
return;
}
string u8ResourceName = Utf8::encode( resourceName );
QCryptographicHash hash( QCryptographicHash::Md5 );
hash.addData( u8ResourceName.data(), u8ResourceName.size() );
if ( !resourceIncluded.insert( hash.result() ).second )
continue;
// Convert to the Windows separator
std::replace( resourceName.begin(), resourceName.end(), '/', '\\' );
if ( resourceName[ 0 ] != '\\' )
{
resourceName.insert( 0, 1, '\\' );
}
Mutex::Lock _( dataMutex );
data.clear();
try
{
// local file takes precedence
string fn = FsEncoding::dirname( dict.getDictionaryFilenames()[ 0 ] ) +
FsEncoding::separator() + u8ResourceName;
File::loadFromFile( fn, data );
}
catch ( File::exCantOpen & )
{
for ( vector< sptr< IndexedMdd > >::const_iterator i = dict.mddResources.begin();
i != dict.mddResources.end(); i++ )
{
sptr< IndexedMdd > mddResource = *i;
if ( mddResource->loadFile( resourceName, data ) )
break;
}
}
// Check if this file has a redirection
// Always encoded in UTF16-LE
// L"@@@LINK="
static const char pattern[16] =
{
'@', '\0', '@', '\0', '@', '\0', 'L', '\0', 'I', '\0', 'N', '\0', 'K', '\0', '=', '\0'
};
if ( data.size() > sizeof( pattern ) )
{
if ( memcmp( &data.front(), pattern, sizeof( pattern ) ) == 0 )
{
data.push_back( '\0' );
data.push_back( '\0' );
QString target = MdictParser::toUtf16( "UTF-16LE", &data.front() + sizeof( pattern ),
data.size() - sizeof( pattern ) );
resourceName = gd::toWString( target.trimmed() );
continue;
}
}
if ( data.size() > 0 )
{
hasAnyData = true;
if ( Filetype::isNameOfCSS( u8ResourceName ) )
{
QString css = QString::fromUtf8( data.data(), data.size() );
// Correct some url's
QRegExp links( "url\\(\\s*(['\"]?)([^'\"]*)(['\"]?)\\s*\\)", Qt::CaseInsensitive, QRegExp::RegExp );
QString id = QString::fromUtf8( dict.getId().c_str() );
int pos = 0;
for( ; ; )
{
pos = links.indexIn( css, pos );
if( pos < 0 )
break;
QString url = links.cap( 2 );
if( url.indexOf( ":/" ) >= 0 || url.indexOf( "data:" ) >= 0)
{
// External link or base64-encoded data
pos += links.cap().size();
continue;
}
QString newUrl = QString( "url(" ) + links.cap( 1 ) + "bres://"
+ id + "/" + url + links.cap( 3 ) + ")";
css.replace( pos, links.cap().size(), newUrl );
pos += newUrl.size();
}
dict.isolateCSS( css, ".mdict" );
QByteArray bytes = css.toUtf8();
data.resize( bytes.size() );
memcpy( &data.front(), bytes.constData(), bytes.size() );
}
}
break;
}
finish();
}
sptr<Dictionary::DataRequest> MdxDictionary::getResource( const string & name ) throw( std::exception )
{
return new MddResourceRequest( *this, name );
}
const QString & MdxDictionary::getDescription()
{
if ( !dictionaryDescription.isEmpty() )
return dictionaryDescription;
if ( idxHeader.descriptionSize == 0 )
{
dictionaryDescription = "NONE";
}
else
{
Mutex::Lock _( idxMutex );
vector< char > chunk;
char * dictDescription = chunks.getBlock( idxHeader.descriptionAddress, chunk );
string str( dictDescription );
dictionaryDescription = QString::fromUtf8( str.c_str(), str.size() );
}
return dictionaryDescription;
}
void MdxDictionary::loadIcon() throw()
{
if ( dictionaryIconLoaded )
return;
QString fileName =
QDir::fromNativeSeparators( FsEncoding::decode( getDictionaryFilenames()[ 0 ].c_str() ) );
// Remove the extension
fileName.chop( 3 );
if ( !loadIconFromFile( fileName ) )
{
// Use default icons
dictionaryIcon = dictionaryNativeIcon = QIcon( ":/icons/mdict.png" );
}
dictionaryIconLoaded = true;
}
void MdxDictionary::loadArticle( uint32_t offset, string & articleText, bool noFilter )
{
vector< char > chunk;
Mutex::Lock _( idxMutex );
// Load record info from index
MdictParser::RecordInfo recordInfo;
char * pRecordInfo = chunks.getBlock( offset, chunk );
memcpy( &recordInfo, pRecordInfo, sizeof( recordInfo ) );
// Make a sub unique id for this article
QString articleId;
articleId.setNum( ( quint64 )pRecordInfo, 16 );
ScopedMemMap compressed( dictFile, recordInfo.compressedBlockPos, recordInfo.compressedBlockSize );
if ( !compressed.startAddress() )
throw exCorruptDictionary();
QByteArray decompressed;
if ( !MdictParser::parseCompressedBlock( recordInfo.compressedBlockSize, ( char * )compressed.startAddress(),
recordInfo.decompressedBlockSize, decompressed ) )
throw exCorruptDictionary();
QString article = MdictParser::toUtf16( encoding.c_str(),
decompressed.constData() + recordInfo.recordOffset,
recordInfo.recordSize );
article = MdictParser::substituteStylesheet( article, styleSheets );
if( !noFilter )
article = filterResource( articleId, article );
// Check for unclosed <span> and <div>
int openTags = article.count( QRegExp( "<\\s*span\\b", Qt::CaseInsensitive ) );
int closedTags = article.count( QRegExp( "<\\s*/span\\s*>", Qt::CaseInsensitive ) );
while( openTags > closedTags )
{
article += "</span>";
closedTags += 1;
}
openTags = article.count( QRegExp( "<\\s*div\\b", Qt::CaseInsensitive ) );
closedTags = article.count( QRegExp( "<\\s*/div\\s*>", Qt::CaseInsensitive ) );
while( openTags > closedTags )
{
article += "</div>";
closedTags += 1;
}
articleText = string( article.toUtf8().constData() );
}
QString & MdxDictionary::filterResource( QString const & articleId, QString & article )
{
QString id = QString::fromStdString( getId() );
QString uniquePrefix = QString::fromLatin1( "g" ) + id + "_" + articleId + "_";
QRegExp allLinksRe( "(?:<\\s*(a(?:rea)?|img|link|script)(?:\\s+[^>]+|\\s*)>)", Qt::CaseInsensitive );
QRegExp wordCrossLink( "([\\s\"']href\\s*=)\\s*([\"'])entry://([^>#]*)((?:#[^>]*)?)\\2", Qt::CaseInsensitive );
wordCrossLink.setMinimal( true );
QRegExp anchorIdRe( "([\\s\"'](?:name|id)\\s*=)\\s*([\"'])\\s*(?=\\S)", Qt::CaseInsensitive );
QRegExp anchorIdRe2( "([\\s\"'](?:name|id)\\s*=)\\s*(?=[^\"'])([^\\s\">]+)", Qt::CaseInsensitive );
QRegExp anchorLinkRe( "([\\s\"']href\\s*=\\s*[\"'])entry://#", Qt::CaseInsensitive );
QRegExp audioRe( "([\\s\"']href\\s*=)\\s*([\"'])sound://([^\">]+)\\2", Qt::CaseInsensitive );