gatk-3.8/archive/java/src/org/broadinstitute/sting/vcftools/VCFHomogenizer.java

154 lines
4.0 KiB
Java

/*
* Copyright (c) 2010 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 org.broadinstitute.sting.playground.tools.vcf;
import org.broad.tribble.vcf.VCFCodec;
import java.io.*;
import java.util.zip.*;
// Edit a VCF on the fly to be on-spec.
/**
* @author jmaguire
*/
class VCFHomogenizer implements VCFCodec.LineTransform {
//my ($chr, $off, $id, $ref, $alt, $qual, $filter, $info, $format, @genotypes) = @tokens;
public String lineTransform(String input)
{
if (input == null) { return null; }
//System.out.println("input : " + input);
// Make it tab-delimited
input = input.replaceAll(" +", "\t");
/////////
// Header corrections
if (input.startsWith("##format=VCFv3.2")) { return "##format=VCRv3.2\n"; }
if (input.startsWith("#CHROM")) { return input.replaceAll("PROB", "QUAL"); }
if (input.startsWith("#")) { return input; }
/////////
// Line-level corrections
// make "nan" into "NaN"
input = input.replaceAll("nan", "NaN");
input = input.replaceAll("DB(\\;|\\s)", "DB=1$1");
input = input.replaceAll("HM2(\\;|\\s)", "HM2=1$1");
input = input.replaceAll("HM3(\\;|\\s)", "HM3=1$1");
String[] tokens = input.split("\\s+");
/////////
// Token-level corrections
// if alt is "N", make it "."
if (tokens[4].equals("N")) { tokens[4] = "."; }
if (tokens[5].equals(".")) { tokens[5] = "-1"; }
String ref = tokens[3];
String alt = tokens[4];
String[] alts = alt.split(",");
for (int i = 9; i < tokens.length; i++)
{
if (tokens[i].equals(".")) { tokens[i] = "./.:0"; }
tokens[i] = tokens[i].replaceAll(ref, "0");
if (! alt.equals("."))
{
if (alts.length == 1)
{
tokens[i] = tokens[i].replaceAll(alt, "1");
}
else
{
for (int j = 0; j < alts.length; j++)
{
tokens[i] = tokens[i].replaceAll(alts[j], "1");
}
}
}
}
/////////
// Info-level corrections
String info = tokens[7];
String new_info = "";
String[] info_tokens = info.split(";");
for (int i = 0; i < info_tokens.length; i++)
{
if (info_tokens[i].startsWith("R2="))
{
// Fix NaN's in RNaN's in R2.
String new_token = info_tokens[i].replace("NaN", "0.0");
info_tokens[i] = new_token;
}
else if (info_tokens[i].startsWith("AC="))
{
// Fix the case where AC includes the ref count first.
String[] ACs = info_tokens[i].replaceAll("^AC=", "").split(",");
if (ACs.length == alts.length+1)
{
String new_ACs = "";
for (int j = 1; j < ACs.length; j++)
{
new_ACs += ACs[j];
if (j != (ACs.length-1)) { new_ACs += ","; }
}
info_tokens[i] = "AC=" + new_ACs;
continue;
}
}
new_info += info_tokens[i];
if (i != (info_tokens.length-1)) { new_info += ";"; }
}
tokens[7] = new_info;
/////////
// Now put it back together and emit.
String output = tokens[0];
for (int i = 1; i < tokens.length; i++)
{
output = output + "\t" + tokens[i];
}
output = output + "\n";
//System.out.println("output: " + output);
return output;
}
}