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131 lines
3.5 KiB
C++
131 lines
3.5 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 "transliteration.hh"
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#include "utf8.hh"
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#include "folding.hh"
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#include "dprintf.hh"
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namespace Transliteration {
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using gd::wchar;
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void Table::ins( char const * from, char const * to )
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{
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wstring fr = Utf8::decode( std::string( from ) );
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if ( fr.size() > maxEntrySize )
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maxEntrySize = fr.size();
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insert( std::pair< wstring, wstring >( fr,
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Utf8::decode( std::string( to ) ) ) );
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}
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TransliterationDictionary::TransliterationDictionary( string const & id,
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string const & name_,
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QIcon icon_,
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Table const & table_,
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bool caseSensitive_ ):
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Dictionary::Class( id, vector< string >() ),
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name( name_ ), icon( icon_ ), table( table_ ),
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caseSensitive( caseSensitive_ )
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{}
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string TransliterationDictionary::getName() throw()
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{ return name; }
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map< Dictionary::Property, string > TransliterationDictionary::getProperties() throw()
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{ return map< Dictionary::Property, string >(); }
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unsigned long TransliterationDictionary::getArticleCount() throw()
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{ return 0; }
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unsigned long TransliterationDictionary::getWordCount() throw()
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{ return 0; }
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sptr< Dictionary::WordSearchRequest > TransliterationDictionary::prefixMatch( wstring const &,
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unsigned long ) throw( std::exception )
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{ return new Dictionary::WordSearchRequestInstant(); }
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sptr< Dictionary::DataRequest > TransliterationDictionary::getArticle( wstring const &,
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vector< wstring > const &,
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wstring const & )
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throw( std::exception )
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{ return new Dictionary::DataRequestInstant( false ); }
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vector< wstring > TransliterationDictionary::getAlternateWritings( wstring const & str )
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throw()
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{
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vector< wstring > results;
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wstring result, folded;
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wstring const * target;
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if ( caseSensitive )
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{
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// Don't do any transform -- the transliteration is case-sensitive
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target = &str;
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}
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else
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{
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folded = Folding::applySimpleCaseOnly( str );
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target = &folded;
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}
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wchar const * ptr = target->c_str();
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size_t left = target->size();
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Table::const_iterator i;
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while( left )
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{
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unsigned x;
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for( x = table.getMaxEntrySize(); x >= 1; --x )
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{
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if ( left >= x )
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{
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i = table.find( wstring( ptr, x ) );
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if ( i != table.end() )
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{
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result.append( i->second );
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ptr += x;
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left -= x;
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break;
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}
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}
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}
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if ( !x )
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{
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// No matches -- add this char as it is
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result.push_back( *ptr++ );
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--left;
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}
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}
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if ( result != *target )
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results.push_back( result );
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return results;
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}
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sptr< Dictionary::WordSearchRequest > TransliterationDictionary::findHeadwordsForSynonym( wstring const & str )
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throw( std::exception )
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{
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sptr< Dictionary::WordSearchRequestInstant > result = new Dictionary::WordSearchRequestInstant();
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vector< wstring > alts = getAlternateWritings( str );
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DPRINTF( "alts = %u\n", alts.size() );
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for( unsigned x = 0; x < alts.size(); ++x )
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result->getMatches().push_back( alts[ x ] );
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return result;
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}
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}
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