/*
* The MIT License
*
* Copyright (c) 2009 The Broad Institute
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package htsjdk.samtools.filter;
import htsjdk.samtools.SAMException;
import htsjdk.samtools.SAMRecord;
import htsjdk.samtools.util.IOUtil;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
/**
* Filter by a set of specified readnames
* <p/>
* $Id$
*/
public class ReadNameFilter implements SamRecordFilter {
private boolean includeReads = false;
private Set<String> readNameFilterSet = new HashSet<String>();
public ReadNameFilter(final File readNameFilterFile, final boolean includeReads) {
IOUtil.assertFileIsReadable(readNameFilterFile);
IOUtil.assertFileSizeNonZero(readNameFilterFile);
try {
final BufferedReader in = IOUtil.openFileForBufferedReading(readNameFilterFile);
String line = null;
while ((line = in.readLine()) != null) {
if (!line.trim().isEmpty()) {
readNameFilterSet.add(line.split("\\s+")[0]);
}
}
in.close();
} catch (IOException e) {
throw new SAMException(e.getMessage(), e);
}
this.includeReads = includeReads;
}
public ReadNameFilter(final Set<String> readNameFilterSet, final boolean includeReads) {
this.readNameFilterSet = readNameFilterSet;
this.includeReads = includeReads;
}
/**
* Determines whether a SAMRecord matches this filter
*
* @param record the SAMRecord to evaluate
*
* @return true if the SAMRecord matches the filter, otherwise false
*/
public boolean filterOut(final SAMRecord record) {
if (includeReads) {
if (readNameFilterSet.contains(record.getReadName())) {
return false;
}
} else {
if (!readNameFilterSet.contains(record.getReadName())) {
return false;
}
}
return true;
}
/**
* Determines whether a pair of SAMRecords matches this filter
*
* @param first the first SAMRecord to evaluate
* @param second the second SAMRecord to evaluate
*
* @return true if the pair of records matches filter, otherwise false
*/
public boolean filterOut(final SAMRecord first, final SAMRecord second) {
if (includeReads) {
if (readNameFilterSet.contains(first.getReadName()) &&
readNameFilterSet.contains(second.getReadName())) {
return false;
}
} else {
if (!readNameFilterSet.contains(first.getReadName()) &&
!readNameFilterSet.contains(second.getReadName())) {
return false;
}
}
return true;
}
}