1 files changed, 150 insertions, 0 deletions
diff --git a/3rdparty/clucene/src/CLucene/search/RangeFilter.cpp b/3rdparty/clucene/src/CLucene/search/RangeFilter.cpp
new file mode 100644
index 000000000..66ee5ce55
--- /dev/null
+++ b/3rdparty/clucene/src/CLucene/search/RangeFilter.cpp
@@ -0,0 +1,150 @@
+/*------------------------------------------------------------------------------
+* Copyright (C) 2003-2006 Ben van Klinken and the CLucene Team
+* 
+* Distributable under the terms of either the Apache License (Version 2.0) or 
+* the GNU Lesser General Public License, as specified in the COPYING file.
+------------------------------------------------------------------------------*/
+#include "CLucene/StdHeader.h"
+#include "RangeFilter.h"
+
+CL_NS_DEF(search)
+CL_NS_USE(index)
+CL_NS_USE(util)
+CL_NS_USE(document)
+
+
+RangeFilter::RangeFilter( const TCHAR* fieldName, const TCHAR* lowerTerm, const TCHAR* upperTerm, bool includeLower, bool includeUpper )
+{
+	this->field = STRDUP_TtoT(fieldName);
+	if ( lowerTerm != NULL )
+		this->lowerValue = STRDUP_TtoT(lowerTerm);
+	else
+		this->lowerValue = NULL;
+	if ( upperTerm != NULL )
+		this->upperValue = STRDUP_TtoT(upperTerm);
+	else
+		this->upperValue = NULL;
+	this->includeLower = includeLower;
+	this->includeUpper = includeUpper;
+}
+
+
+/**
+ * Constructs a filter for field <code>fieldName</code> matching
+ * less than or equal to <code>upperTerm</code>.
+ */
+RangeFilter* RangeFilter::Less( TCHAR* fieldName, TCHAR* upperTerm ) {
+	return new RangeFilter( fieldName, NULL, upperTerm, false, true );
+}
+
+
+/**
+* Constructs a filter for field <code>fieldName</code> matching
+* more than or equal to <code>lowerTerm</code>.
+*/
+RangeFilter* RangeFilter::More( TCHAR* fieldName, TCHAR* lowerTerm ) {
+	return new RangeFilter( fieldName, lowerTerm, NULL, true, false );
+}
+
+
+RangeFilter::~RangeFilter()
+{
+	_CLDELETE_CARRAY( lowerValue );
+	_CLDELETE_CARRAY( field );
+	_CLDELETE_CARRAY( upperValue );
+}
+
+
+RangeFilter::RangeFilter( const RangeFilter& copy ) : 
+	field( STRDUP_TtoT(copy.field) ),
+	lowerValue( STRDUP_TtoT(copy.lowerValue) ), 
+	upperValue( STRDUP_TtoT(copy.upperValue) ),
+	includeLower( copy.includeLower ),
+	includeUpper( copy.includeUpper )
+{
+}
+
+
+Filter* RangeFilter::clone() const {
+	return _CLNEW RangeFilter(*this );
+}
+
+
+TCHAR* RangeFilter::toString()
+{
+	size_t len = (field ? _tcslen(field) : 0) + (lowerValue ? _tcslen(lowerValue) : 0) + (upperValue ? _tcslen(upperValue) : 0) + 8;
+	TCHAR* ret = _CL_NEWARRAY( TCHAR, len );
+	ret[0] = 0;
+	_sntprintf( ret, len, _T("%s: [%s-%s]"), field, (lowerValue?lowerValue:_T("")), (upperValue?upperValue:_T("")) );
+	
+	return ret;
+}
+
+
+/** Returns a BitSet with true for documents which should be permitted in
+search results, and false for those that should not. */
+BitSet* RangeFilter::bits( IndexReader* reader )
+{
+	BitSet* bts = _CLNEW BitSet( reader->maxDoc() );
+	Term* term = NULL;
+	
+	Term* t = _CLNEW Term( field, (lowerValue ? lowerValue : _T("")), false );
+	TermEnum* enumerator = reader->terms( t );	// get enumeration of all terms after lowerValue
+	_CLDECDELETE( t );
+	
+	if( enumerator->term(false) == NULL ) {
+		_CLDELETE( enumerator );
+		return bts;
+	}
+	
+	bool checkLower = false;
+	if( !includeLower ) // make adjustments to set to exclusive
+		checkLower = true;
+	
+	TermDocs* termDocs = reader->termDocs();
+	
+	try
+	{
+		do
+		{
+			term = enumerator->term();
+			
+			if( term == NULL || _tcscmp(term->field(), field) )
+				break;
+			
+			if( !checkLower || lowerValue == NULL || _tcscmp(term->text(), lowerValue) > 0 )
+			{
+				checkLower = false;
+				if( upperValue != NULL )
+				{
+					int compare = _tcscmp( upperValue, term->text() );
+					
+					/* if beyond the upper term, or is exclusive and
+					 * this is equal to the upper term, break out */
+					if( (compare < 0) || (!includeUpper && compare == 0) )
+						break;
+				}
+				
+				termDocs->seek( enumerator->term(false) );
+				while( termDocs->next() ) {
+					bts->set( termDocs->doc() );
+				}
+			}
+			
+			_CLDECDELETE( term );
+		}
+		while( enumerator->next() );
+	}
+	_CLFINALLY
+	(
+		_CLDECDELETE( term );
+		termDocs->close();
+		_CLVDELETE( termDocs );
+		enumerator->close();
+		_CLDELETE( enumerator );
+	);
+	
+	return bts;
+}
+
+CL_NS_END