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DSL: Handle round brackets while full-text search

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This commit is contained in:
Abs62 2017-07-25 18:28:56 +03:00
parent cdf2c0d404
commit 3b980f4c19
3 changed files with 223 additions and 75 deletions
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2
dsl.cc
View file

@ -86,7 +86,7 @@ enum
Signature = 0x584c5344, // DSLX on little-endian, XLSD on big-endian
CurrentFormatVersion = 22 + BtreeIndexing::FormatVersion + Folding::Version,
CurrentZipSupportVersion = 2,
CurrentFtsIndexVersion = 1
CurrentFtsIndexVersion = 2
};
struct IdxHeader

293
ftshelpers.cc
View file

@ -172,13 +172,17 @@ bool parseSearchString( QString const & str, QStringList & indexWords,
}
void parseArticleForFts( uint32_t articleAddress, QString & articleText,
QMap< QString, QVector< uint32_t > > & words )
QMap< QString, QVector< uint32_t > > & words,
bool handleRoundBrackets )
{
if( articleText.isEmpty() )
return;
QRegExp regBrackets = QRegExp( "(\\(\\w+\\)){0,1}(\\w+)(\\(\\w+\\)){0,1}(\\w+){0,1}(\\(\\w+\\)){0,1}" );
QRegExp regSplit = QRegExp( "\\W+" );
QStringList articleWords = articleText.normalized( QString::NormalizationForm_C )
.split( QRegExp( "\\W+" ), QString::SkipEmptyParts );
.split( QRegExp( handleRoundBrackets ? "[^\\w\\(\\)]+" : "\\W+" ), QString::SkipEmptyParts );
QSet< QString > setOfWords;
for( int x = 0; x < articleWords.size(); x++ )
@ -214,6 +218,45 @@ void parseArticleForFts( uint32_t articleAddress, QString & articleText,
if( word.size() < FTS::MinimumWordSize )
continue;
if( handleRoundBrackets && ( word.indexOf( '(' ) >= 0 || word.indexOf( ')' ) >= 0 ) )
{
// Special handle for words with round brackets - DSL feature
QStringList list;
QStringList oldVariant = word.split( regSplit, QString::SkipEmptyParts );
for( QStringList::iterator it = oldVariant.begin(); it != oldVariant.end(); ++it )
if( it->size() >= FTS::MinimumWordSize && !list.contains( *it ) )
list.append( *it );
int pos = regBrackets.indexIn( word );
if( pos >= 0 )
{
QStringList parts = regBrackets.capturedTexts();
QString parsedWord = parts[ 2 ] + parts[ 4 ]; // Brackets removed
if( parsedWord.size() >= FTS::MinimumWordSize && !list.contains( parsedWord ) )
list.append( parsedWord );
parsedWord = parts[ 1 ].remove( '(' ).remove( ')' )
+ parts[ 2 ]
+ parts[ 3 ].remove( '(' ).remove( ')' )
+ parts[ 4 ]
+ parts[ 5 ].remove( '(' ).remove( ')' ); // Brackets expansed
if( parsedWord.size() >= FTS::MinimumWordSize && !list.contains( parsedWord ) )
list.append( parsedWord );
}
for( QStringList::iterator it = list.begin(); it != list.end(); ++it )
{
if( !setOfWords.contains( *it ) )
{
setOfWords.insert( *it );
words[ *it ].push_back( articleAddress );
}
}
}
else
if( !setOfWords.contains( word ) )
{
setOfWords.insert( word );
@ -272,6 +315,12 @@ void makeFTSIndex( BtreeIndexing::BtreeDictionary * dict, QAtomicInt & isCancell
QMap< QString, QVector< uint32_t > > ftsWords;
bool needHandleBrackets;
{
QString name = QString::fromUtf8( dict->getDictionaryFilenames()[ 0 ].c_str() ).toLower();
needHandleBrackets = name.endsWith( ".dsl" ) || name.endsWith( "dsl.dz" );
}
// index articles for full-text search
for( int i = 0; i < offsets.size(); i++ )
{
@ -282,7 +331,7 @@ void makeFTSIndex( BtreeIndexing::BtreeDictionary * dict, QAtomicInt & isCancell
dict->getArticleText( offsets.at( i ), headword, articleStr );
parseArticleForFts( offsets.at( i ), articleStr, ftsWords );
parseArticleForFts( offsets.at( i ), articleStr, ftsWords, needHandleBrackets );
}
// Free memory
@ -351,6 +400,14 @@ void FTSResultsRequest::checkArticles( QVector< uint32_t > const & offsets,
QVector< QStringList > hiliteRegExps;
QString id = QString::fromUtf8( dict.getId().c_str() );
bool needHandleBrackets;
{
QString name = QString::fromUtf8( dict.getDictionaryFilenames()[ 0 ].c_str() ).toLower();
needHandleBrackets = name.endsWith( ".dsl" ) || name.endsWith( ".dsl.dz" );
}
QRegExp regBrackets = QRegExp( "(\\(\\w+\\)){0,1}(\\w+)(\\(\\w+\\)){0,1}(\\w+){0,1}(\\(\\w+\\)){0,1}" );
QRegExp regSplit = QRegExp( "\\W+" );
if( searchMode == FTS::Wildcards || searchMode == FTS::RegExp )
{
@ -380,7 +437,12 @@ void FTSResultsRequest::checkArticles( QVector< uint32_t > const & offsets,
{
// Words mode
QRegExp regex( "\\b\\w+\\b" );
QRegExp regex;
if( needHandleBrackets )
regex = QRegExp( "[\\w\\(\\)]+" );
else
regex = QRegExp( "\\b\\w+\\b" );
Qt::CaseSensitivity cs = matchCase ? Qt::CaseSensitive : Qt::CaseInsensitive;
QVector< QPair< QString, bool > > wordsList;
if( ignoreWordsOrder )
@ -417,94 +479,179 @@ void FTSResultsRequest::checkArticles( QVector< uint32_t > const & offsets,
{
QString s = regex.cap().normalized( QString::NormalizationForm_C );
if( ignoreWordsOrder )
bool breakSearch = false;
QStringList parsedWords;
if( needHandleBrackets && ( s.indexOf( '(' ) >= 0 || s.indexOf( ')' ) >= 0 ) )
{
int i;
for( i = 0; i < wordsList.size(); i++ )
// Handle brackets
int pos = regBrackets.indexIn( s );
if( pos >= 0 )
{
if( wordsList.at( i ).second )
{
if( ( searchMode == FTS::WholeWords && s.compare( wordsList.at( i ).first, cs ) == 0 )
|| ( searchMode == FTS::PlainText && s.contains( wordsList.at( i ).first, cs ) ) )
{
wordsList[ i ].second = false;
order.append( wordsList.at( i ).first );
break;
}
}
}
if( i < wordsList.size() )
{
// Word found
matchWordNom += 1;
QStringList parts = regBrackets.capturedTexts();
QString word = parts[ 2 ] + parts[ 4 ]; // Brackets removed
parsedWords.append( word );
if( matchWordNom >= words.size() )
{
// All words are found
// Store found words sequence and continue search
// It's nesessary for hilite search results
// Check if such sequence already presented
int x;
for( x = 0; x < allOrders.size(); x++ )
{
if( allOrders[ x ] == order )
break;
}
if( x >= allOrders.size() )
allOrders.append( order );
order.clear();
matchWordNom = 0;
unmatchWordNom = 0;
for( int i = 0; i < wordsList.size(); i++ )
wordsList[ i ].second = true;
pos += s.isEmpty() ? 1 : s.length();
continue;
}
unmatchWordNom = 0;
word = parts[ 1 ].remove( '(' ).remove( ')' )
+ parts[ 2 ]
+ parts[ 3 ].remove( '(' ).remove( ')' )
+ parts[ 4 ]
+ parts[ 5 ].remove( '(' ).remove( ')' ); // Brackets expansed
parsedWords.append( word );
}
else
if( matchWordNom > 0 )
{
unmatchWordNom += 1;
if( distanceBetweenWords >= 0 && unmatchWordNom > distanceBetweenWords )
{
// Sequence broken, clear all counters
matchWordNom = 0;
unmatchWordNom = 0;
for( int i = 0; i < wordsList.size(); i++ )
wordsList[ i ].second = true;
order.clear();
}
}
parsedWords = s.split( regSplit, QString::SkipEmptyParts );
}
else
parsedWords.append( s );
int n;
for( n = 0; n < parsedWords.size(); n++ )
{
if( ( searchMode == FTS::WholeWords && s.compare( words.at( matchWordNom ), cs ) == 0 )
|| ( searchMode == FTS::PlainText && s.contains( words.at( matchWordNom ), cs ) ) )
if( ignoreWordsOrder )
{
matchWordNom += 1;
int i;
for( i = 0; i < wordsList.size(); i++ )
{
if( wordsList.at( i ).second )
{
if( ( searchMode == FTS::WholeWords && parsedWords.at( n ).compare( wordsList.at( i ).first, cs ) == 0 )
|| ( searchMode == FTS::PlainText && parsedWords.at( n ).contains( wordsList.at( i ).first, cs ) ) )
{
wordsList[ i ].second = false;
if( matchWordNom >= words.size() )
break; // All words are found
if( parsedWords.size() > 1 )
{
QString wordToHilite = s;
while( !wordToHilite.isEmpty() && ( wordToHilite.at( 0 ) == '(' || wordToHilite.at( 0 ) == ')' ) )
wordToHilite.remove( 0, 1 );
while( !wordToHilite.isEmpty() && ( wordToHilite.endsWith( '(' ) || wordToHilite.endsWith( ')' ) ) )
wordToHilite.chop( 1 );
order.append( wordToHilite.replace( '(', "\\(" ).replace( ')', "\\)" ) );
}
else
order.append( wordsList.at( i ).first );
unmatchWordNom = 0;
break;
}
}
}
if( i < wordsList.size() )
{
// Word found
matchWordNom += 1;
if( matchWordNom >= words.size() )
{
// All words are found
// Store found words sequence and continue search
// It's nesessary for hilite search results
// Check if such sequence already presented
int x;
for( x = 0; x < allOrders.size(); x++ )
{
if( allOrders[ x ] == order )
break;
}
if( x >= allOrders.size() )
allOrders.append( order );
order.clear();
matchWordNom = 0;
unmatchWordNom = 0;
for( int i = 0; i < wordsList.size(); i++ )
wordsList[ i ].second = true;
break;
}
unmatchWordNom = 0;
break;
}
else
if( matchWordNom > 0 && n >= parsedWords.size() - 1 )
{
unmatchWordNom += 1;
if( distanceBetweenWords >= 0 && unmatchWordNom > distanceBetweenWords )
{
// Sequence broken, clear all counters
matchWordNom = 0;
unmatchWordNom = 0;
for( int i = 0; i < wordsList.size(); i++ )
wordsList[ i ].second = true;
order.clear();
}
}
}
else
if( matchWordNom > 0 )
{
unmatchWordNom += 1;
if( distanceBetweenWords >= 0 && unmatchWordNom > distanceBetweenWords )
if( ( searchMode == FTS::WholeWords && parsedWords.at( n ).compare( words.at( matchWordNom ), cs ) == 0 )
|| ( searchMode == FTS::PlainText && parsedWords.at( n ).contains( words.at( matchWordNom ), cs ) ) )
{
matchWordNom = 0;
matchWordNom += 1;
if( needHandleBrackets )
{
if( parsedWords.size() > 1 )
{
QString wordToHilite = s;
while( !wordToHilite.isEmpty() && ( wordToHilite.at( 0 ) == '(' || wordToHilite.at( 0 ) == ')' ) )
wordToHilite.remove( 0, 1 );
while( !wordToHilite.isEmpty() && ( wordToHilite.endsWith( '(' ) || wordToHilite.endsWith( ')' ) ) )
wordToHilite.chop( 1 );
order.append( wordToHilite.replace( '(', "\\(" ).replace( ')', "\\)" ) );
}
else
order.append( words.at( matchWordNom - 1 ) );
}
if( matchWordNom >= words.size() )
{
// All words are found
if( needHandleBrackets )
{
if( allOrders.isEmpty() )
allOrders.append( words );
// Check if such sequence already presented
int x;
for( x = 0; x < allOrders.size(); x++ )
{
if( allOrders[ x ] == order )
break;
}
if( x >= allOrders.size() )
allOrders.append( order );
matchWordNom = 0;
unmatchWordNom = 0;
order.clear();
}
else
breakSearch = true;
break;
}
unmatchWordNom = 0;
break;
}
else
if( matchWordNom > 0 && n >= parsedWords.size() - 1 )
{
unmatchWordNom += 1;
if( distanceBetweenWords >= 0 && unmatchWordNom > distanceBetweenWords )
{
matchWordNom = 0;
unmatchWordNom = 0;
if( needHandleBrackets )
order.clear();
}
}
}
}
if( breakSearch )
break;
pos += s.isEmpty() ? 1 : s.length();
}
}

3
ftshelpers.hh
View file

@ -52,7 +52,8 @@ bool parseSearchString( QString const & str, QStringList & IndexWords,
bool & hasCJK );
void parseArticleForFts( uint32_t articleAddress, QString & articleText,
QMap< QString, QVector< uint32_t > > & words );
QMap< QString, QVector< uint32_t > > & words,
bool handleRoundBrackets = false );
void makeFTSIndex( BtreeIndexing::BtreeDictionary * dict, QAtomicInt & isCancelled );