unwrap.py

#!/usr/bin/python
 
import sys
import getopt
 
def usage():
    print
    print "Usage: %(filename)s -n 4" % { "filename" : sys.argv[0] }
    print "  unwraps 4 lines of output to a single line"
 
def main(argv=None):
    if argv is None:
        argv = sys.argv
 
    try:
        opts, args = getopt.getopt(argv[1:], "n:", ["number-of-lines"])
        num_lines = 0
        for o, a in opts:
            if o == "-n":
                num_lines = int(a)
 
 
        assert (num_lines > 0)
 
        i = 0
        buff = ""
        for line in sys.stdin:
            buff = buff + " " + line.lstrip().rstrip()
            i = i + 1
            if i >= num_lines:
                print buff
                i = 0
                buff = ""
 
 
        if i != 0:
            print buff
 
    except getopt.GetoptError, err:
        print str(err)
        usage()
        return 2;
 
    return 0;
 
if __name__ == "__main__":
    sys.exit(main())