#!/usr/local/bin/python
#Benjamin Ranck
#b@benjaminranck.com

#Originally made for a User Interface Design and Programming class.
#Good for creating dynamic content on a small number of predefined pages.

import os, re, sys

class Display:
#This is the display engine for all the pages it takes a set of arguments 
#which include a list of content to be inserted followed by a list of the names
#which are defined within the base page to be replaced by corresponding content
#it also takes the name of the page itself.  replace and content must be the same
#length
#Takes arguements of content to be replace and the page.
	def displayPage(self, content=["<!- no replacement made ->"], \
		replace=["<!-- PYTHONCODE -->"], page="index.html"):
		
		print "Content-Type: text/html\n"
		
		if len(content) != len(replace):
			print "content and replace not the same length!"
			sys.exit(1)

		targethandle=open(page,"r")
		targetinput=targethandle.read()
		targethandle.close()
	
		BadTemplateException = "There was a problem with the HTML template."
	
		for i in range(len(content)):
   			targetinput = (re.sub(replace[i], content[i], targetinput))			
		
		print targetinput
		sys.exit(0)
	
	#This converts a given list of strings to a set of options for use
	#in a form menu
	def listToHTMLOptions(self, options):
		html = ""
		if(options==None):
			return html
		for x in options:
			html += "<option value="
			html += x +" />" + x + "\n"
		return html