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# import sys
import argparse
# Order of types must match order of arguments defined
# (or else arg validation will no longer work properly)
TYPES = ['hex', 'rgb', 'cmyk']
# look into CMY, HSL, HSV
HEX_LETTERS = ['a', 'b', 'c', 'd', 'e', 'f']
def main():
# Set up arguments
parser = argparse.ArgumentParser()
parser.add_argument('-hex', action='store_true', help='convert from hex (accepts hexadecimal input [ffffff] or string ["#ffffff"] (both are case insensitive)')
parser.add_argument('-rgb', action='store_true', help='convert from RGB (accepts integer input [R G B], or string [\"rgb(R, G, B)\"] (case/whitespace insensitive)')
parser.add_argument('-cmyk', action='store_true', help='convert from CMYK (accepts integer input [C M Y K], or string [\"cmyk(C, M, Y, K)\"] (case/whitespace insensitive)')
parser.add_argument('color', nargs='*', help='accepts a color in Hex, RGB, CMYK, or HSL and performs format conversions (does not support CMYK profiles, conversions are uncalibrated)')
args = parser.parse_args()
# debug print
print('args type: ', type(vars(args)))
print(args, '\n')
# INPUT SYNTAX VALIDATION
if not validateArguments(args) :
return;
color = args.color
# HANDLE HEX INPUT
if args.hex :
color = color[0].lower().replace(' ', '').strip('#')
if not validateHex(color) :
return
convertFromHex(color)
# HANDLE RGB INPUT
if args.rgb :
# cleanse any non-numerical stuff
if len(color) == 1 :
color = color[0].lower().strip('rgb(').strip(')').replace(' ', '').split(',')
if not validateRGB(color) :
return
for i in range(len(color)) :
color[i] = int(color[i])
convertFromRGB(color)
# HANDLE CMYK INPUT
if args.cmyk :
# cleanse any non-numerical stuff
if len(color) == 1 :
color = color[0].lower().strip('cmyk(').strip(')').replace('%', '').replace(' ', '').split(',')
if not validateCMYK(color) :
return
print('convert cmyk: ', color)
##
# HEX CONVERSION SECTION
##
# Takes in valid RGB code and converts it to the other formats
def convertFromHex(hexCode) :
print('convert hex: ', hexCode)
convertToRGB('hex', hexCode)
# convertToCMYK('hex', code)
# convertToHSL('hex', code)
def convertToHex(codeFormat, code) :
hexValue = '#'
if codeFormat == 'rgb' :
for rgbValue in code :
hexValue += hex(int(rgbValue / 16))
hexValue += hex(int(rgbValue % 16))
print('HEX: ', hexValue)
##
# RGB CONVERSION SECTION
##
# Takes in valid RGB code and converts it to the other formats
def convertFromRGB(code) :
print('convert RGB: ', code)
convertToHex('rgb', code)
# convertToCMYK('rgb', code)
# convertToHSL('rgb', code)
def convertToRGB(codeFormat, code) :
rgbValue = ''
if codeFormat == 'hex' :
tempSum = 0
i = 0
while i < 6 :
tempSum += int(code[i], 16) * 16
tempSum += int(code[i+1], 16)
rgbValue += str(tempSum) + ' '
i = i + 2
tempSum = 0
print('RGB: ', rgbValue)
##
# INPUT VALIDATION SECTION
##
# Takes in a string. Returns True if valid Hex color code.
def validateHex(value) :
if len(value) != 6 :
print('ERROR: Improper number of values for hex (should be 6 digits)')
return False
for i in range(len(value)):
if value[i-1].isnumeric() :
continue
elif HEX_LETTERS.count(value[i-1]) != 0 :
continue
else :
print('ERROR: Invalid character in hex code')
return False
return True
# Takes in a list of numerical strings. Returns True if valid RGB values.
def validateRGB(values) :
if len(values) != 3 :
print('ERROR: Improper number of values for RGB (should be 3)')
return False
for value in values :
if not value.strip().isnumeric() :
print('ERROR: Improper format for RGB value(s)')
return False
value = int(value)
if (value < 0) or (value > 255) :
print('ERROR: Each RBG value must be between 0-255')
return False
return True
# Takes in a string. Returns True if valid CMYK values.
def validateCMYK(values) :
if len(values) != 4 :
print('ERROR: Improper number of values for CMYK (should be 4)')
return False
for value in values :
if not value.isnumeric() :
print('ERROR: Improper format for CMYK value(s). All values must be numeric and between 0-100(%)!')
return False
value = int(value)
if (value < 0) or (value > 100) :
print('ERROR: Each CMYK value must be between 0-100(%)')
return False
return True
##
# GENERAL UTILITIES
##
# Takes in the program's arguments generated by argparse. Returns True if valid arguments
def validateArguments(args) :
# First, check that only one input flag is being used
flagsActive = 0
for flag in range(len(vars(args))-1) :
# this uses our TYPES list to key into the args dictionary and determine how many flags are True
if vars(args)[TYPES[flag]] :
flagsActive += 1
if flagsActive > 1 :
print('ERROR: Currently this tool only supports one input type at a time. Too many flags!')
return False
# Second, check that there is a color code to convert
if len(args.color) == 0 :
print('ERROR: Must enter both an input flag and color code (did you forget to wrap color code in quotes?)\nFor more info, use the \'-h\' or \'--help\' flag.')
return False
return True
# Takes in a decimal number and converts it to hexadecimal
def hex(number) :
number = int(number)
if number > 16 :
print("ERROR: Decimal to Hexidecimal conversion failed")
return "ERROR: Decimal to Hexidecimal conversion failed"
if number < 10 :
return str(number)
return HEX_LETTERS[number % 10]
if __name__ == '__main__' :
main()
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