#!/usr/bin/python

# converts vim outliner files to xHTML
#    Copyright (C) 2008 Steve Pomeroy <steve@staticfree.info>
#
#    This program is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.

import sys, re
from xml.dom.minidom import getDOMImplementation
import xml.dom.ext as domext

class vo:
	dom = getDOMImplementation()
	tab_re = re.compile(r'(\t*)(.+)')
	def __init__(self, fname):
		self.tree = self.parse(fname)
	def html(self):
		d = self.dom.createDocument('http://www.w3.org/1999/xhtml', "html", None)
		head = d.createElement('head')
		body = d.createElement('body')
		d.documentElement.appendChild(head)
		d.documentElement.appendChild(body)
		h1 = None
		for b_item in self.tree:
			if type(b_item) == list:
				body.appendChild(self.html_list(d, b_item))
			else:
				if not h1:
					h1 = d.createElement('h1')
					h1.appendChild(d.createTextNode(b_item))
					body.appendChild(h1)
					title = d.createElement('title')
					title.appendChild(d.createTextNode(b_item))
					head.appendChild(title)
				else:
					h2 = d.createElement('h2')
					h2.appendChild(d.createTextNode(b_item))
					body.appendChild(h2)
		
		domext.PrettyPrint(d)
	def html_list(self, d, l):
		if len(l) == 1 and type(l[0]) == str:
			p = d.createElement('p')
			p.appendChild(d.createTextNode(l[0]))
			elem = p
		else:
			ul = d.createElement('ul')
			prev = None
			for item in l:
				li = d.createElement('li')
				if type(item) == list:
					if len(item) == 1 and type(item[0]) == str and item[0][0:4] == 'http' and prev:
						a = d.createElement('a')
						a.setAttribute('href', item[0])
						prev_c = prev.firstChild
						prev.removeChild(prev_c)
						a.appendChild(prev_c)
						prev.appendChild(a)
						li = prev
					else:
						prev.appendChild(self.html_list(d, item))
						li = prev
				else:
					li.appendChild(d.createTextNode(item))
				ul.appendChild(li)
				prev = li
			elem = ul
		return elem
	def parse(self, fname):
		s = [[]]
		f = open(fname)
		prev_i = None
		working = 0
		ret = None
		for line in f:
			m = self.tab_re.match(line)
			if not m:
				continue
			i = len(m.group(1))
			txt = m.group(2)
			if prev_i == None or i == prev_i:
				s[working].append(txt)
			elif i > prev_i:
				s.append([txt])
				working += 1
			elif i < prev_i:
				for times in range(i, prev_i):
					last = s.pop()
					working -= 1
					s[working].append(last)
				s[working].append(txt)
			prev_i = i
		for times in range(0, len(s)-1):
			last = s.pop()
			working -= 1
			s[working].append(last)
		return s[0]

v = vo(sys.argv[1])
v.html()