'''code_module.py
The purpose of this module
is to provide functions
for the coding of strings.
This is a level 1 module.'''
#==================================
# Level 1 Functions: String To Code
#==================================
def string_to_number(string):
'''string_to_number(string)
Create a starting number.
Tranlate the string into the number.
Return the number.'''
number = 1
for character in string:
number *= 256
number += ord(character)
return number
def number_to_code(number):
'''number_to_code(long)
Create a starting string.
Translate the number into the code.
Return the string.'''
code = str()
while number != 0:
code = chr(number % 255 + 1) + code
number /= 255
return code
#==================================
# Level 1 Functions: Code To String
#==================================
def code_to_number(code):
'''code_to_number(string)
Create a starting number.
Tranlate the code into the number.
Return the number.'''
number = 0
for character in code:
number *= 255
number += ord(character) - 1
return number
def number_to_string(number):
'''number_to_string(long)
Create a starting string.
Translate the number into the string.
Return the string.'''
string = str()
while number > 1:
string = chr(number % 256) + string
number /= 256
return string
#===============================
# Level 2 Functions: To And From
#===============================
def string_to_code(string):
'''string_to_code(string)
Returns a string converted to code.'''
return number_to_code(string_to_number(string))
def code_to_string(code):
'''code_to_string(string)
Returns code converted to a string.'''
return number_to_string(code_to_number(code))
#================
# CGI: Print File
#================
if __name__ == '__main__':
from sys import argv
print 'Content-type: text/plain'
print
print file(argv[0]).read()
