#! /usr/bin/env python
# -*- coding: utf-8 -*-

# file prefs2prefs-lfuns.py
# This file is part of LyX, the document processor.
# Licence details can be found in the file COPYING.

# author Richard Heck

# Full author contact details are available in file CREDITS

# This file houses conversion information for the bind and ui files,
# i.e., for files where we are converting lfuns.

# The converter functions take a line as argument and return a list: 
# 	(Bool, NewLine), 
# where the Bool says if  we've modified anything and the NewLine is 
# the new line, if so, which will be used to replace the old line.


import sys, re

current_format = 1

###########################################################
#
# Actual converter functions
#
# These accept a line as argument and should return a list:
#  (bool, newline)
# where the bool indicates whether we changed anything. In 
# that case, one normally returns: (False, []).

no_match = (False, [])

def simple_renaming(line, old, new):
	if line.find(old) == -1:
		return no_match
	line = line.replace(old, new)
	return (True, line)


def next_inset_modify(line):
	return simple_renaming(line, "next-inset-modify", "inset-modify")


def next_inset_toggle(line):
	return simple_renaming(line, "next-inset-toggle", "inset-toggle")


def optional_insert(line):
	return simple_renaming(line, "argument-insert", "optional-insert")


re_nm = re.compile(r'^(.*)notes-mutate\s+(\w+)\s+(\w+)(.*)$')
def notes_mutate(line):
	m = re_nm.search(line)
	if not m:
		return no_match

	prefix = m.group(1)
	source = m.group(2)
	target = m.group(3)
	suffix = m.group(4)
	newline = prefix + "inset-forall Note:" + source + \
		" inset-modify note Note " + target + suffix
	return (True, newline)


re_ait = re.compile(r'^(.*)all-insets-toggle\s+(\w+)(?:\s+(\w+))?(.*)$')
def all_insets_toggle(line):
	m = re_ait.search(line)
	if not m:
		return no_match

	prefix = m.group(1)
	action = m.group(2)
	target = m.group(3) 
	suffix = m.group(4)

	# we need to transform the target to match the inset layout names
	# this will not be perfect
	if target == "ert":
		target = "ERT"
	elif target == None:
		target = "*"
	elif target == "tabular":
		# There does not seem to be an InsetLayout for tables, so
		# I do not know what to do here. If anyone does, then please
		# fix this. For now, we just have to remove this line.
		return (True, "")
	else:
		target = target.capitalize()
	
	newline = prefix + "inset-forall " + target + " inset-toggle " + \
		action + suffix
	return (True, newline)



#
#
###########################################################


# Conversion chain

conversions = [
	[ # this will be a long list of conversions for format 0
		next_inset_toggle,
		next_inset_modify,
		optional_insert,
		notes_mutate,
		all_insets_toggle
	] # end conversions for format 0
]