Angus Leeming wrote:
> I've started writing the equivalent in python (also attached), but
> wonder if there is a simple way of extracting a substring 'fa' and
> converting it to the equivalent decimal number '250'?
Ok, got it.
#! /usr/bin/env python
import re, sys
from string import atoi
hexcolor_re = re.compile("^[0-9a-fA-F]{6}$")
def make_texcolor(hexcolor):
# Test that the input string contains 6 hexadecimal chars
if not hexcolor_re.match(hexcolor):
print "Cannot convert '%s'" %(hexcolor)
sys.exit(1)
red = atoi(hexcolor[0:2], 16)
green = atoi(hexcolor[2:4], 16)
blue = atoi(hexcolor[4:6], 16)
return "rgb %d %d %d" % (red, green, blue)
def main(argv):
if len(argv) != 2:
print "Expected a single arg!"
sys.exit(1)
texcolor = make_texcolor(argv[1])
print "texcolor is ", texcolor
if __name__ == "__main__":
main(sys.argv)
--
Angus
