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https://github.com/xiaoyifang/goldendict-ng.git
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540dda26ed
The replacement command: git grep -l 'qrcx://localhost' | xargs sed -i 's/qrcx:\/\/localhost/qrc:\/\//g' The qrcx:// URL scheme was introduced in 2009 or earlier - it is present in the first commit in GoldenDict's git history. Back then GoldenDict supported Qt versions earlier than 4.6, in which QWebSecurityOrigin::addLocalScheme() was introduced. Adding the qrc URL scheme as local obsoletes the qrcx URL scheme. GoldenDict does not compile against Qt versions earlier than 4.6, so there is no reason to use this custom URL scheme anymore. Co-authored-by: Igor Kushnir <igorkuo@gmail.com>
652 lines
17 KiB
C++
652 lines
17 KiB
C++
/* This file is (c) 2008-2012 Konstantin Isakov <ikm@goldendict.org>
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* Part of GoldenDict. Licensed under GPLv3 or later, see the LICENSE file */
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#include "lsa.hh"
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#include "file.hh"
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#include "iconv.hh"
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#include "folding.hh"
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#include "utf8.hh"
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#include "btreeidx.hh"
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#include "fsencoding.hh"
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#include "audiolink.hh"
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#include "gddebug.hh"
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#include <set>
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#include <string>
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#ifdef _MSC_VER
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#include <stub_msvc.h>
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#endif
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#define OV_EXCLUDE_STATIC_CALLBACKS
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#include <vorbis/vorbisfile.h>
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#include <QDir>
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#include <QUrl>
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#include <QDebug>
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#include <QFile>
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#include "utils.hh"
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namespace Lsa {
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using std::string;
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using gd::wstring;
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using std::map;
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using std::multimap;
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using std::set;
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using BtreeIndexing::WordArticleLink;
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using BtreeIndexing::IndexedWords;
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using BtreeIndexing::IndexInfo;
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namespace {
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DEF_EX( exInvalidData, "Invalid data encountered", Dictionary::Ex )
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DEF_EX( exFailedToOpenVorbisData, "Failed to open Vorbis data", Dictionary::Ex )
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DEF_EX( exFailedToSeekInVorbisData, "Failed to seek in Vorbis data", Dictionary::Ex )
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DEF_EX( exFailedToRetrieveVorbisInfo, "Failed to retrieve Vorbis info", Dictionary::Ex )
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enum
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{
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Signature = 0x5841534c, // LSAX on little-endian, XASL on big-endian
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CurrentFormatVersion = 5
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};
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struct IdxHeader
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{
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uint32_t signature; // First comes the signature, BGLX
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uint32_t formatVersion; // File format version, currently 1.
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uint32_t soundsCount; // Total number of sounds, for informative purposes only
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uint32_t vorbisOffset; // Offset of the vorbis file which contains all snds
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uint32_t indexBtreeMaxElements; // Two fields from IndexInfo
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uint32_t indexRootOffset;
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}
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#ifndef _MSC_VER
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__attribute__((packed))
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#endif
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;
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bool indexIsOldOrBad( string const & indexFile )
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{
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File::Class idx( indexFile, "rb" );
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IdxHeader header;
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return idx.readRecords( &header, sizeof( header ), 1 ) != 1 ||
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header.signature != Signature ||
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header.formatVersion != CurrentFormatVersion;
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}
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string stripExtension( string const & str )
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{
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if ( str.size() > 3 &&
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( strcasecmp( str.c_str() + ( str.size() - 4 ), ".wav" ) == 0 ) )
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return string( str, 0, str.size() - 4 );
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else
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return str;
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}
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struct Entry
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{
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string name;
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uint32_t samplesLength;
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uint32_t samplesOffset;
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public:
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// Reads an entry from the file's current position
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Entry( File::Class & f );
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};
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Entry::Entry( File::Class & f )
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{
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bool firstEntry = ( f.tell() == 13 );
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// Read the entry's filename
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size_t read = 0;
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vector< uint16_t > filenameBuffer( 64 );
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for( ; ; ++read )
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{
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if ( filenameBuffer.size() <= read )
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filenameBuffer.resize( read + 64 );
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f.read( &filenameBuffer[ read ], 2 );
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if ( filenameBuffer[ read ] == 0xD )
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{
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if ( f.read< uint16_t >() != 0xA )
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throw exInvalidData();
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// Filename ending marker
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break;
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}
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}
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// Skip zero or ff, or just ff.
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if ( uint8_t x = f.read< uint8_t >() )
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{
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if ( x != 0xFF )
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throw exInvalidData();
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}
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else
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if ( f.read< uint8_t >() != 0xFF )
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throw exInvalidData();
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if ( !firstEntry )
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{
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// For all entries but the first one, read its offset in
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// samples.
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samplesOffset = f.read< uint32_t >();
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if ( f.read< uint8_t >() != 0xFF )
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throw exInvalidData();
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}
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else
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samplesOffset = 0;
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// Read the size of the recording, in samples
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samplesLength = f.read< uint32_t >();
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name = Iconv::toUtf8( Iconv::Utf16Le, &filenameBuffer.front(),
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read * sizeof( uint16_t ) );
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}
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class LsaDictionary: public BtreeIndexing::BtreeDictionary
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{
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Mutex idxMutex;
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File::Class idx;
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IdxHeader idxHeader;
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public:
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LsaDictionary( string const & id, string const & indexFile,
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vector< string > const & dictionaryFiles );
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string getName() noexcept override;
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map< Dictionary::Property, string > getProperties() noexcept override
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{ return map< Dictionary::Property, string >(); }
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unsigned long getArticleCount() noexcept override
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{ return idxHeader.soundsCount; }
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unsigned long getWordCount() noexcept override
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{ return getArticleCount(); }
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sptr< Dictionary::DataRequest > getArticle( wstring const &,
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vector< wstring > const & alts,
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wstring const &,
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bool ignoreDiacritics ) override
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;
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sptr< Dictionary::DataRequest > getResource( string const & name ) override
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;
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protected:
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void loadIcon() noexcept override;
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};
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string LsaDictionary::getName() noexcept
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{
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string result = FsEncoding::basename( getDictionaryFilenames()[ 0 ] );
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// Strip the extension
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result.erase( result.rfind( '.' ) );
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return result;
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}
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LsaDictionary::LsaDictionary( string const & id,
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string const & indexFile,
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vector< string > const & dictionaryFiles ):
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BtreeDictionary( id, dictionaryFiles ),
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idx( indexFile, "rb" ),
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idxHeader( idx.read< IdxHeader >() )
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{
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// Initialize the index
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openIndex( IndexInfo( idxHeader.indexBtreeMaxElements,
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idxHeader.indexRootOffset ),
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idx, idxMutex );
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}
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sptr< Dictionary::DataRequest > LsaDictionary::getArticle( wstring const & word,
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vector< wstring > const & alts,
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wstring const &,
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bool ignoreDiacritics )
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{
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vector< WordArticleLink > chain = findArticles( word, ignoreDiacritics );
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for( unsigned x = 0; x < alts.size(); ++x )
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{
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/// Make an additional query for each alt
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vector< WordArticleLink > altChain = findArticles( alts[ x ], ignoreDiacritics );
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chain.insert( chain.end(), altChain.begin(), altChain.end() );
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}
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multimap< wstring, string > mainArticles, alternateArticles;
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set< uint32_t > articlesIncluded; // Some synonims make it that the articles
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// appear several times. We combat this
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// by only allowing them to appear once.
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wstring wordCaseFolded = Folding::applySimpleCaseOnly( word );
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if( ignoreDiacritics )
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wordCaseFolded = Folding::applyDiacriticsOnly( wordCaseFolded );
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for( unsigned x = 0; x < chain.size(); ++x )
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{
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if ( articlesIncluded.find( chain[ x ].articleOffset ) != articlesIncluded.end() )
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continue; // We already have this article in the body.
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// Ok. Now, does it go to main articles, or to alternate ones? We list
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// main ones first, and alternates after.
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// We do the case-folded comparison here.
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wstring headwordStripped =
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Folding::applySimpleCaseOnly( Utf8::decode( chain[ x ].word ) );
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if( ignoreDiacritics )
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headwordStripped = Folding::applyDiacriticsOnly( headwordStripped );
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multimap< wstring, string > & mapToUse =
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( wordCaseFolded == headwordStripped ) ?
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mainArticles : alternateArticles;
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mapToUse.insert( std::pair< wstring, string >(
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Folding::applySimpleCaseOnly( Utf8::decode( chain[ x ].word ) ), chain[ x ].word ) );
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articlesIncluded.insert( chain[ x ].articleOffset );
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}
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if ( mainArticles.empty() && alternateArticles.empty() )
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return std::make_shared<Dictionary::DataRequestInstant>( false ); // No such word
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string result;
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multimap< wstring, string >::const_iterator i;
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result += "<table class=\"lsa_play\">";
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for( i = mainArticles.begin(); i != mainArticles.end(); ++i )
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{
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result += "<tr>";
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QUrl url;
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url.setScheme( "gdau" );
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url.setHost( QString::fromUtf8( getId().c_str() ) );
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url.setPath( Utils::Url::ensureLeadingSlash( QString::fromUtf8( i->second.c_str() ) ) );
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string ref = string( "\"" ) + url.toEncoded().data() + "\"";
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result += addAudioLink( ref, getId() );
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result += "<td><a href=" + ref + R"(><img src="qrc:///icons/playsound.png" border="0" alt="Play"/></a></td>)";
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result += "<td><a href=" + ref + ">" + i->second + "</a></td>";
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result += "</tr>";
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}
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for( i = alternateArticles.begin(); i != alternateArticles.end(); ++i )
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{
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result += "<tr>";
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QUrl url;
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url.setScheme( "gdau" );
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url.setHost( QString::fromUtf8( getId().c_str() ) );
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url.setPath( Utils::Url::ensureLeadingSlash( QString::fromUtf8( i->second.c_str() ) ) );
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string ref = string( "\"" ) + url.toEncoded().data() + "\"";
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result += addAudioLink( ref, getId() );
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result += "<td><a href=" + ref + R"(><img src="qrc:///icons/playsound.png" border="0" alt="Play"/></a></td>)";
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result += "<td><a href=" + ref + ">" + i->second + "</a></td>";
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result += "</tr>";
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}
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result += "</table>";
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Dictionary::DataRequestInstant * ret =
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new Dictionary::DataRequestInstant( true );
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ret->getData().resize( result.size() );
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memcpy( &(ret->getData().front()), result.data(), result.size() );
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return std::shared_ptr<Dictionary::DataRequestInstant>(ret);
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}
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/// This wraps around file operations
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struct ShiftedVorbis
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{
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QFile & f;
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size_t shift;
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ShiftedVorbis( QFile & f_, size_t shift_ ): f( f_ ), shift( shift_ )
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{}
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static size_t read( void * ptr, size_t size, size_t nmemb, void * datasource );
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static int seek( void * datasource, ogg_int64_t offset, int whence );
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static long tell( void * datasource );
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static ov_callbacks callbacks;
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};
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size_t ShiftedVorbis::read( void * ptr, size_t size, size_t nmemb,
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void * datasource )
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{
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ShiftedVorbis * sv = ( ShiftedVorbis * ) datasource;
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return sv->f.read( reinterpret_cast<char *>( ptr ), size * nmemb );
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}
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int ShiftedVorbis::seek( void * datasource, ogg_int64_t offset, int whence )
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{
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ShiftedVorbis * sv = ( ShiftedVorbis * ) datasource;
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if ( whence == SEEK_SET )
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offset += sv->shift;
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if( whence == SEEK_CUR )
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offset += sv->f.pos();
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if( whence == SEEK_END )
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offset += sv->f.size();
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return sv->f.seek( offset );
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}
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long ShiftedVorbis::tell( void * datasource )
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{
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ShiftedVorbis * sv = ( ShiftedVorbis * ) datasource;
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long result = sv->f.pos();
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if ( result != -1 )
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result -= sv->shift;
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return result;
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}
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ov_callbacks ShiftedVorbis::callbacks = { ShiftedVorbis::read,
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ShiftedVorbis::seek,
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NULL,
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ShiftedVorbis::tell };
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// A crude .wav header which is sufficient for our needs
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struct WavHeader
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{
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char riff[ 4 ]; // RIFF
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uint32_t riffLength;
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char waveAndFmt[ 8 ]; // WAVEfmt%20
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uint32_t fmtLength; // 16
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uint16_t formatTag; // 1
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uint16_t channels; // 1 or 2
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uint32_t samplesPerSec;
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uint32_t bytesPerSec;
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uint16_t blockAlign;
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uint16_t bitsPerSample; // 16
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char data[ 4 ]; // data
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uint32_t dataLength;
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}
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#ifndef _MSC_VER
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__attribute__((packed))
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#endif
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;
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sptr< Dictionary::DataRequest > LsaDictionary::getResource( string const & name )
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{
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// See if the name ends in .wav. Remove that extension then
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string strippedName =
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( name.size() > 3 && ( name.compare( name.size() - 4, 4, ".wav" ) == 0 ) ) ?
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string( name, 0, name.size() - 4 ) : name;
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vector< WordArticleLink > chain = findArticles( Utf8::decode( strippedName ) );
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if ( chain.empty() )
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return std::make_shared<Dictionary::DataRequestInstant>( false ); // No such resource
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File::Class f( getDictionaryFilenames()[ 0 ], "rb" );
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f.seek( chain[ 0 ].articleOffset );
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Entry e( f );
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f.seek( idxHeader.vorbisOffset );
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ShiftedVorbis sv( f.file(), idxHeader.vorbisOffset );
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OggVorbis_File vf;
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int result = ov_open_callbacks( &sv, &vf, 0, 0, ShiftedVorbis::callbacks );
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if ( result )
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throw exFailedToOpenVorbisData();
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if ( ov_pcm_seek( &vf, e.samplesOffset ) )
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throw exFailedToSeekInVorbisData();
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vorbis_info * vi = ov_info( &vf, -1 );
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if ( !vi )
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{
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ov_clear( &vf );
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throw exFailedToRetrieveVorbisInfo();
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}
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sptr< Dictionary::DataRequestInstant > dr = std::make_shared<
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Dictionary::DataRequestInstant>( true );
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vector< char > & data = dr->getData();
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data.resize( sizeof( WavHeader ) + e.samplesLength * 2 );
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WavHeader * wh = (WavHeader *)&data.front();
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memset( wh, 0, sizeof( *wh ) );
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memcpy( wh->riff, "RIFF", 4 );
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wh->riffLength = data.size() - 8;
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memcpy( wh->waveAndFmt, "WAVEfmt ", 8 );
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wh->fmtLength = 16;
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wh->formatTag = 1;
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wh->channels = vi->channels;
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wh->samplesPerSec = vi->rate;
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wh->bytesPerSec = vi->channels * vi->rate * 2;
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wh->blockAlign = vi->channels * 2;
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wh->bitsPerSample = 16;
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memcpy( wh->data, "data", 4 );
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wh->dataLength = data.size() - sizeof( *wh );
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// Now decode vorbis to the rest of the block
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char * ptr = &data.front() + sizeof( *wh );
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int left = data.size() - sizeof( *wh );
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int bitstream = 0;
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while( left )
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{
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long result = ov_read( &vf, ptr, left, 0, 2, 1, &bitstream );
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if ( result <= 0 )
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{
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gdWarning( "Failed to read Vorbis data (code = %ld)\n", result );
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memset( ptr, 0, left );
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break;
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}
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if ( result > left )
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{
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GD_FDPRINTF( stderr, "Warning: Vorbis decode returned more data than requested.\n" );
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result = left;
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}
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ptr += result;
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left -= result;
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}
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ov_clear( &vf );
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return dr;
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}
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void LsaDictionary::loadIcon() noexcept
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{
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if ( dictionaryIconLoaded )
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return;
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QString fileName =
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QDir::fromNativeSeparators( FsEncoding::decode( getDictionaryFilenames()[ 0 ].c_str() ) );
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// Remove the extension
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fileName.chop( 3 );
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if( !loadIconFromFile( fileName ) )
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{
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// Load failed -- use default icons
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dictionaryNativeIcon = dictionaryIcon = QIcon(":/icons/playsound_full.png");
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}
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dictionaryIconLoaded = true;
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}
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}
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vector< sptr< Dictionary::Class > > makeDictionaries(
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vector< string > const & fileNames,
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string const & indicesDir,
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Dictionary::Initializing & initializing )
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{
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vector< sptr< Dictionary::Class > > dictionaries;
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for( vector< string >::const_iterator i = fileNames.begin(); i != fileNames.end();
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++i )
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{
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/// Only allow .dat and .lsa extensions to save scanning time
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if ( i->size() < 4 ||
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( strcasecmp( i->c_str() + ( i->size() - 4 ), ".dat" ) != 0 &&
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strcasecmp( i->c_str() + ( i->size() - 4 ), ".lsa" ) != 0 ) )
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continue;
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try
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{
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|
File::Class f( *i, "rb" );
|
|
|
|
/// Check the signature
|
|
|
|
char buf[ 9 ];
|
|
|
|
if ( f.readRecords( buf, 9, 1 ) != 1 || memcmp( buf, "L\09\0S\0A\0\xff", 9 ) != 0 )
|
|
{
|
|
// The file is too short or the signature doesn't match -- skip this
|
|
// file
|
|
continue;
|
|
}
|
|
|
|
vector< string > dictFiles( 1, *i );
|
|
|
|
string dictId = Dictionary::makeDictionaryId( dictFiles );
|
|
|
|
string indexFile = indicesDir + dictId;
|
|
|
|
if ( Dictionary::needToRebuildIndex( dictFiles, indexFile ) || indexIsOldOrBad( indexFile ) )
|
|
{
|
|
// Building the index
|
|
|
|
gdDebug( "Lsa: Building the index for dictionary: %s\n", i->c_str() );
|
|
|
|
initializing.indexingDictionary( FsEncoding::basename( *i ) );
|
|
|
|
File::Class idx( indexFile, "wb" );
|
|
|
|
IdxHeader idxHeader;
|
|
|
|
memset( &idxHeader, 0, sizeof( idxHeader ) );
|
|
|
|
// We write a dummy header first. At the end of the process the header
|
|
// will be rewritten with the right values.
|
|
|
|
idx.write( idxHeader );
|
|
|
|
IndexedWords indexedWords;
|
|
|
|
/// XXX handle big-endian machines here!
|
|
uint32_t entriesCount = f.read< uint32_t >();
|
|
|
|
GD_DPRINTF( "%s: %u entries\n", i->c_str(), entriesCount );
|
|
|
|
idxHeader.soundsCount = entriesCount;
|
|
|
|
vector< uint16_t > filenameBuffer;
|
|
|
|
while( entriesCount-- )
|
|
{
|
|
uint32_t offset = f.tell();
|
|
|
|
Entry e( f );
|
|
|
|
|
|
// Remove the extension, no need for that in the index
|
|
e.name = stripExtension( e.name );
|
|
|
|
GD_DPRINTF( "Read filename %s (%u at %u)<\n", e.name.c_str(), e.samplesLength, e.samplesOffset );
|
|
|
|
// Insert new entry into an index
|
|
|
|
indexedWords.addWord( Utf8::decode( e.name ), offset );
|
|
}
|
|
|
|
idxHeader.vorbisOffset = f.tell();
|
|
|
|
// Make sure there's really some vobis data there
|
|
|
|
char buf[ 4 ];
|
|
|
|
f.read( buf, sizeof( buf ) );
|
|
|
|
if ( strncmp( buf, "OggS", 4 ) != 0 )
|
|
throw exInvalidData();
|
|
|
|
// Build the index
|
|
|
|
IndexInfo idxInfo = BtreeIndexing::buildIndex( indexedWords, idx );
|
|
|
|
idxHeader.indexBtreeMaxElements = idxInfo.btreeMaxElements;
|
|
idxHeader.indexRootOffset = idxInfo.rootOffset;
|
|
|
|
// That concludes it. Update the header.
|
|
|
|
idxHeader.signature = Signature;
|
|
idxHeader.formatVersion = CurrentFormatVersion;
|
|
|
|
idx.rewind();
|
|
|
|
idx.write( &idxHeader, sizeof( idxHeader ) );
|
|
}
|
|
|
|
dictionaries.push_back( std::make_shared<LsaDictionary>( dictId,
|
|
indexFile,
|
|
dictFiles ) );
|
|
}
|
|
catch( std::exception & e )
|
|
{
|
|
gdWarning( "Lingvo's LSA reading failed: %s, error: %s\n",
|
|
i->c_str(), e.what() );
|
|
}
|
|
}
|
|
|
|
return dictionaries;
|
|
}
|
|
|
|
|
|
}
|