RosettaCodeData/Task/Bitmap-Read-a-PPM-file/E/bitmap-read-a-ppm-file-2.e

def readPPMTask(inputFile, outputFile) {
  makeGrayscale \
    .fromColor(readPPM(<import:java.io.makeFileInputStream>(inputFile))) \
    .toColor() \
    .writePPM(<import:java.io.makeFileOutputStream>(outputFile))
}