/*----------------------------------------------------------------------------

                               ppmtoppm

------------------------------------------------------------------------------

  Part of the Netpbm package.

  Copy PPM image from Standard Input to Standard Output

  By Bryan Henderson, San Jose CA 2002.09.07

  Contributed to the public domain by its author 2002.09.07

-----------------------------------------------------------------------------*/

#include "ppm.h"

int

main(int argc, char *argv[]) {

    int format;

    int rows, cols;

    pixval maxval;

    int row;

    pixel* pixelrow;

    ppm_init(&argc, argv);

    if (argc-1 != 0)

        pm_error("Program takes no arguments.  Input is from Standard Input");

    ppm_readppminit(stdin, &cols, &rows, &maxval, &format);

    ppm_writeppminit(stdout, cols, rows, maxval, 0);

    pixelrow = ppm_allocrow(cols);

    for (row = 0; row < rows; row++) {

        ppm_readppmrow(stdin, pixelrow, cols, maxval, format);

        ppm_writeppmrow(stdout, pixelrow, cols, maxval, 0);

    }

    ppm_freerow(pixelrow);

    pm_close(stdin);

    exit(0);

}