#	Programmer:	Daniel Pozmanter
#	E-mail:		drpython@bluebottle.com
#	Note:		You must reply to the verification e-mail to get through.
#
#	Copyright 2003-2005 Daniel Pozmanter
#
#	Distributed under the terms of the GPL (GNU Public License)
#
#    DrPython 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.
#
#    You should have received a copy of the GNU General Public License
#    along with this program; if not, write to the Free Software
#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
	
#Preferences

#LongLineCol from Chris McDonough
#Changed "doc.longlinecol" to "doc.long.line.col"

import drPreferences
import re

def  GetPrefValue(preflabel, text):
	restart = re.compile('^<' + preflabel + '>', re.M)
	reend = re.compile('</' + preflabel + '>$', re.M)
	start = restart.search(text)
	end = reend.search(text)
		
	if start is None or end is None:
		return None
	
	return text[start.end():end.start()]

def ConvertRawPreference(preference, type, default):
	if type == 0:
		if len(preference) > 0:
			return preference
		else:
			return default
	elif type == 1:
		try:
			return int(preference)
		except:
			return 0
	elif type == 2:
		return preference

def ExtractPreferenceFromText(text, pref):
	try:
		start = text.index("<" + pref + ">") + len(pref) + 2
		end = text.index("</" + pref + ">")
		
		return text[start:end]
	except:
		return ""

def ReadPreferences(prefs, prefsfile):
	#Handle exceptions in parent function.
	#sets prefs for parent frame.
	#Use GetPrefFromText(oldpref, text, prefstring) for string prefs
	#Use GetPrefFromText(oldpref, text, prefstring, True) for int prefs
	#Use ExtractPreferenceFromText(text, prefstring) for prefs where and empty
	#string is a valid value.
	
	fin = open(prefsfile, 'r')
	text = fin.read()		
	fin.close()
		
	PreferencesDictionary = drPreferences.GetPreferencesDictionary()

	for Entry in PreferencesDictionary:
		for Preference in PreferencesDictionary[Entry]:
			value = GetPrefValue(Preference[1], text)
			if value is not None:
				prefs[Preference[0]] = ConvertRawPreference(value, Preference[2], prefs[Preference[0]])

def WritePreferences(prefs, prefsfile):
	fin = open(prefsfile, 'w')

	PreferencesDictionary = drPreferences.GetPreferencesDictionary()

	for Entry in PreferencesDictionary:
		for Preference in PreferencesDictionary[Entry]:
			if Preference[2] == 1:
				fin.write('<' + Preference[1] + '>' + str(prefs[Preference[0]]) + '</' + Preference[1] + '>\n')
			else:
				fin.write('<' + Preference[1] + '>' + prefs[Preference[0]] + '</' + Preference[1] + '>\n')	
	fin.close()
	
	
#*****************************
#Old Functions (Still Used In Plugins)

def GetPreference(pref, prefsfile):
	#Handle exceptions in parent function.
	fin = open(prefsfile, 'r')	
	text = fin.read()		
	fin.close()
	
	#Test File:
	if (text.find("drpython") < 0):
		return -1
	
	return ExtractPreferenceFromText(text, pref)

def GetPrefFromText(oldvalue, text, targetpref, integer = False):
	if (integer):
		pref = ExtractPreferenceFromText(text, targetpref)
		if (len(pref) > 0):
			return SafeInt(pref)
	else:
		pref = ExtractPreferenceFromText(text, targetpref)
		if (len(pref) > 0):
			return pref
	return oldvalue

def SafeInt(string):
	if (len(string) > 0):
		try:
			return int(string)
		except:
			return 0
	return 0