countgc.sh

#!/bin/bash

usage(){
echo "
Written by Brian Bushnell
Last modified January 21, 2015

Description:  Counts GC content of reads or scaffolds.

Usage:  countgc in=<input> out=<output> format=<format>

Input may be stdin or a fasta or fastq file, compressed or uncompressed.
Output (which is optional) is tab-delimited.
Parameters:
format=1:   name   length   A   C   G   T   N
format=2:   name   GC
format=4:   name   length   GC
Note that in format 1, A+C+G+T=1 even when N is nonzero.

Please contact Brian Bushnell at bbushnell@lbl.gov if you encounter any problems.
For documentation and the latest version, visit: https://bbmap.org
"
}

if [ -z "$1" ] || [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
	usage
	exit
fi

resolveSymlinks(){
	SCRIPT="$(cd "$(dirname "$0")" && pwd)/$(basename "$0")"
	while [ -h "$SCRIPT" ]; do
		DIR="$(dirname "$SCRIPT")"
		SCRIPT="$(readlink "$SCRIPT")"
		[ "${SCRIPT#/}" = "$SCRIPT" ] && SCRIPT="$DIR/$SCRIPT"
	done
	DIR="$(cd "$(dirname "$SCRIPT")" && pwd)"
	if [ -f "$DIR/bbtools.jar" ]; then
		CP="$DIR/bbtools.jar"
	else
		CP="$DIR/current/"
	fi
}

setEnv(){
	. "$DIR/javasetup.sh"
	. "$DIR/memdetect.sh"

	parseJavaArgs "--xmx=120m" "--xms=120m" "--mode=fixed" "$@"
	setEnvironment
}

launch() {
	CMD="java $EA $EOOM $SIMD $XMX $XMS -cp $CP jgi.CountGC $@"
	echo "$CMD" >&2
	eval $CMD
}

resolveSymlinks
setEnv "$@"
launch "$@"