#!/usr/bin/env python

import os
import sys
from optparse import OptionParser

def build_parser():
    p = OptionParser()
    return p

def main():
    parser = build_parser()
    opts, args = parser.parse_args()
    if len(args) == 0:
        print >> sys.stderr, 'Expected 1 argument'
        raise SystemExit(1)
    dstdir = args[0]

    try:
        os.mkdir(dstdir)
    except OSError:
        if os.path.isfile(dstdir):
            print >> sys.stderr, ('A file already exists with the target dir '
                                  'name.')
            raise SystemExit(1)

    for arg in sys.stdin:
        srcfile = arg.strip()
        srcpath, srcname = os.path.split(srcfile)
        dstfile = os.path.join(dstdir, srcname)
        prog = 'convert'
        action = '-scale 1200x800'
        cmd = '%s %s %s %s' % (prog, action, srcfile, dstfile)
        print cmd
        os.system(cmd)
        #print repr(cmd)

if __name__ == '__main__':
    main()