A kscript/kotlin tool to filter fasta files by length

fasta_length_filter.kts

//DEPS de.mpicbg.scicomp:kutils:0.4
//KOTLIN_OPTS -J-Xmx5g

import de.mpicbg.scicomp.bioinfo.openFasta
import java.io.File
import kotlin.system.exitProcess

if (args.size != 2) {
    System.err.println("Usage: fasta_filter <fasta> <length_cutoff>")
    exitProcess(-1)
}

val fastaFile = File(args[0])
val lengthCutoff = args[1].toInt()


openFasta(fastaFile).
        filter { it.sequence.length >= lengthCutoff }.
        forEach { print(it.toEntryString()) }