#!@PYTHON@

# convert-mudela.py -- convertor for mudela versions
# 
# source file of the GNU LilyPond music typesetter
# 
# (c) 1998 

# TODO
#   use -f and -t for -s output

# NEWS
# 0.2
#  - rewrite in python

program_name = 'convert-mudela'
version = '@TOPLEVEL_VERSION@'

import os
import sys
import __main__
import getopt
from string import *
import re
import time

mudela_version_re_str = '\\\\version *\"(.*)\"'
mudela_version_re = re.compile(mudela_version_re_str)

def program_id ():
	return '%s (GNU LilyPond) %s' %(program_name,  version);

def identify ():
	sys.stderr.write (program_id () + '\n')

def usage ():
	sys.stdout.write (
		r"""Usage: %s [OPTION]... [FILE]... 
Try to convert to newer mudela-versions.  The version number of the
input is guessed by default from \version directive

Options:
  -h, --help             print this help
  -e, --edit             in place edit
  -f, --from=VERSION     start from version
  -s, --show-rules       print all rules.
  -t, --to=VERSION       target version
      --version          print program version

Report bugs to bugs-gnu-music@gnu.org

""" % program_name)
	
	
	sys.exit (0)

def print_version ():
	
	sys.stdout.write (r"""%s

This is free software.  It is covered by the GNU General Public
License, and you are welcome to change it and/or distribute copies of
it under certain conditions.  invoke as `%s --warranty' for more
information.

""" % (program_id() , program_name))
	
def gulp_file(f):
	try:
		i = open(f)
		i.seek (0, 2)
		n = i.tell ()
		i.seek (0,0)
	except:
		print 'can\'t open file: ' + f + '\n'
		return ''
	s = i.read (n)
	if len (s) <= 0:
		print 'gulped empty file: ' + f + '\n'
	i.close ()
	return s

def str_to_tuple (s):
	return tuple (map (atoi, split (s,'.')))

def tup_to_str (t):
	return join (map (lambda x: '%s' % x, list (t)), '.')

def version_cmp (t1, t2):
	for x in [0,1,2]:
		if t1[x] - t2[x]:
			return t1[x] - t2[x]
	return 0

def guess_mudela_version(filename):
	s = gulp_file (filename)
	m = mudela_version_re.search (s)
	if m:
		return m.group(1)
	else:
		return ''

class FatalConversionError:
	pass

conversions = []

def show_rules (file):
	for x in conversions:
		file.write  ('%s: %s\n' % (tup_to_str (x[0]), x[2]))

############################
		
if 1:					# need new a namespace
	def conv (lines):
		if re.search ('\\\\octave', str):
			sys.stderr.write ('\nNot smart enough to convert \\octave')
			raise FatalConversionError()
		
		return lines

	conversions.append (
		((0,1,19), conv, 'deprecated \\octave; can\'t convert automatically'))


if 1:					# need new a namespace
	def conv (lines):
		x = re.sub ('\\\\textstyle([^;]+);',
					 '\\\\property Lyrics . textstyle = \\1', str)
		x = re.sub ('\\\\key([^;]+);', '\\\\accidentals \\1;', str)
			
		return str

	conversions.append (
		((0,1,20), conv, 'deprecated \\textstyle, new \key syntax'))


if 1:
	def conv (lines):
		x = re.sub ('\\\\musical_pitch', '\\\\musicalpitch',str)
		x = re.sub ('\\\\meter', '\\\\time',str)
			
		return str

	conversions.append (
		((0,1,21), conv, '\\musical_pitch -> \\musicalpitch, '+
		 '\\meter -> \\time'))

if 1:
	def conv (lines):
		return lines

	conversions.append (
		((1,0,0), conv, '0.1.21 -> 1.0.0 '))


if 1:
	def conv (lines):
		x = re.sub ('\\\\accidentals', '\\\\keysignature',str)
		x = re.sub ('specialaccidentals *= *1', 'keyoctaviation = 0',str)
		x = re.sub ('specialaccidentals *= *0', 'keyoctaviation = 1',str)
			
		return str

	conversions.append (
		((1,0,1), conv, '\\accidentals -> \\keysignature, ' +
		 'specialaccidentals -> keyoctaviation'))

if 1:
	def conv(lines):
		if re.search ('\\\\header', lines):
			sys.stderr.write ('\nNot smart enough to convert to new \\header format')
		return lines
	
	conversions.append ((1,0,2), conv, '\\header { key = concat + with + operator }')

if 1:
	def conv(lines):
		x =  re.sub ('\\\\melodic', '\\\\notes',str)
			
		return str
	
	conversions.append ((1,0,3), conv, '\\melodic -> \\notes')

if 1:
	def conv(lines):
		x =  re.sub ('default_paper *=', '',str)
		x =  re.sub ('default_midi *=', '',x)			
			
		return str
	
	conversions.append ((1,0,4), conv, 'default_{paper,midi}')

if 1:
	def conv(lines):
		x =  re.sub ('ChoireStaff', 'ChoirStaff',str)
		x =  re.sub ('\\output', 'output = ',str)
			
		return str
	
	conversions.append ((1,0,5), conv, 'ChoireStaff -> ChoirStaff')

if 1:
	def conv(lines):
		if re.search ('[a-zA-Z]+ = *\\translator',str):
			sys.stderr.write ('\nNot smart enough to change \\translator syntax')
			raise FatalConversionError()
		return str
	
	conversions.append ((1,0,6), conv, 'foo = \\translator {\\type .. } ->\\translator {\\type ..; foo; }')


if 1:
	def conv(lines):
		x =  re.sub ('\\\\lyric', '\\\\lyrics',str)
			
		return str
	
	conversions.append ((1,0,7), conv, '\\lyric -> \\lyrics')

if 1:
	def conv(lines):
		x =  re.sub ('\\\\\\[/3+', '\\\\times 2/3 { ',str)
		x =  re.sub ('\\[/3+', '\\\\times 2/3 { [',str)
		x =  re.sub ('\\\\\\[([0-9/]+)', '\\\\times \\1 {',str)
		x =  re.sub ('\\[([0-9/]+)', '\\\\times \\1 { [',str)
		x =  re.sub ('\\\\\\]([0-9/]+)', '}', str)
		x =  re.sub ('\\\\\\]', '}',str)
		x =  re.sub ('\\]([0-9/]+)', '] }', str)
		return str
	
	conversions.append ((1,0,10), conv, '[2/3 ]1/1 -> \\times 2/3 ')

if 1:
	def conv(lines):
		return lines
	conversions.append ((1,0,12), conv, 'Chord syntax stuff')


if 1:
	def conv(lines):
		
		
		x =  re.sub ('<([^>~]+)~([^>]*)>','<\\1 \\2> ~', str)
			
		return str
	
	conversions.append ((1,0,13), conv, '<a ~ b> c -> <a b> ~ c')

if 1:
	def conv(lines):
		x =  re.sub ('<\\[','[<', str)
		x =  re.sub ('\\]>','>]', str)
			
		return str
	
	conversions.append ((1,0,14), conv, '<[a b> <a b]>c -> [<a b> <a b>]')


if 1:
	def conv(lines):
		x =  re.sub ('\\\\type','\\\\context', str)
		x =  re.sub ('textstyle','textStyle', str)
			
		return str
	
	conversions.append ((1,0,16), conv, '\\type -> \\context, textstyle -> textStyle')


if 1:
	def conv(lines):
		if re.search ('\\\\repeat',str):
			sys.stderr.write ('\nNot smart enough to convert \\repeat')
			raise FatalConversionError()
		return str
	
	conversions.append ((1,0,18), conv,
			    '\\repeat NUM Music Alternative -> \\repeat FOLDSTR Music Alternative')

if 1:
	def conv(lines):
		x =  re.sub ('SkipBars','skipBars', str)
		x =  re.sub ('fontsize','fontSize', str)
		x =  re.sub ('midi_instrument','midiInstrument', x)			
			
		return str

	conversions.append ((1,0,19), conv,
			    'fontsize -> fontSize, midi_instrument -> midiInstrument, SkipBars -> skipBars')


if 1:
	def conv(lines):
		x =  re.sub ('tieydirection','tieVerticalDirection', str)
		x =  re.sub ('slurydirection','slurVerticalDirection', str)
		x =  re.sub ('ydirection','verticalDirection', x)			
			
		return str

	conversions.append ((1,0,20), conv,
			    '{,tie,slur}ydirection -> {v,tieV,slurV}erticalDirection')


if 1:
	def conv(lines):
		x =  re.sub ('hshift','horizontalNoteShift', str)
			
		return str

	conversions.append ((1,0,21), conv,
			    'hshift -> horizontalNoteShift')


if 1:
	def conv(lines):
		x =  re.sub ('\\\\grouping[^;]*;','', str)
			
		return str

	conversions.append ((1,1,52), conv,
			    'deprecate \\grouping')


if 1:
	def conv(lines):
		x =  re.sub ('\\\\wheel','\\\\coda', str)
			
		return str

	conversions.append ((1,1,55), conv,
			    '\\wheel -> \\coda')

if 1:
	def conv(lines):
		x =  re.sub ('keyoctaviation','keyOctaviation', str)
		x =  re.sub ('slurdash','slurDash', str)
			
		return str

	conversions.append ((1,1,65), conv,
			    'slurdash -> slurDash, keyoctaviation -> keyOctaviation')

if 1:
	def conv(lines):
		x =  re.sub ('\\\\repeat *\"?semi\"?','\\\\repeat "volta"', str)
			
		return str

	conversions.append ((1,1,66), conv,
			    'semi -> volta')


if 1:
	def conv(lines):
		x =  re.sub ('\"?beamAuto\"? *= *\"?0?\"?','noAutoBeaming = "1"', str)
			
		return str

	conversions.append ((1,1,67), conv,
			    'beamAuto -> noAutoBeaming')

if 1:
	def conv(lines):
		x =  re.sub ('automaticMelismas', 'automaticMelismata', str)
			
		return str

	conversions.append ((1,2,0), conv,
			    'automaticMelismas -> automaticMelismata')

if 1:
	def conv(lines):
		x =  re.sub ('dynamicDir', 'dynamicDirection', str)
			
		return str

	conversions.append ((1,2,1), conv,
			    'dynamicDir -> dynamicDirection')

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

def get_conversions (from_version, to_version):
	def version_b (v, f = from_version, t = to_version):
		return version_cmp (v[0], f) > 0 and version_cmp (v[0], t) <= 0
	return filter (version_b, conversions)


def latest_version ():
	return conversions[-1][0]

def do_conversion (infile, from_version, outfile, to_version):
	
	conv_list = get_conversions (from_version, to_version)

	sys.stderr.write ('Applying conversions: ')
	str = infile.read (-1)
	last_conversion = ()
	try:
		for x in conv_list:
			sys.stderr.write (tup_to_str (x[0])  + ', ')
			str = x[1] (str)
			last_conversion = x[0]

	except FatalConversionError:
		sys.stderr.write ('Error while converting; I won\'t convert any further')

	if last_conversion:
		sys.stderr.write ('\n')
		new_ver =  '\\\\version \"%s\"' % tup_to_str (last_conversion)
		if re.search (mudela_version_re_str):
			str = re.sub (mudela_version_re_str,new_ver , str)
		else:
			str = new_ver + '\n' + str

		outfile.write(str)

class UnknownVersion:
	pass

def do_one_file (infile_name):
	sys.stderr.write ('Processing `%s\' ... '% infile_name)
	outfile_name = ''
	if __main__.edit:
		outfile_name = infile_name + '.NEW'
	elif __main__.outfile_name:
		outfile_name = __main__.outfile_name

	if __main__.from_version:
		from_version = __main__.from_version
	else:
		guess = guess_mudela_version (infile_name)
		if not guess:
			raise UnknownVersion()
		from_version = str_to_tuple (guess)

	if __main__.to_version:
		to_version = __main__.to_version
	else:
		to_version = latest_version ()


	if infile_name:
		infile = open (infile_name,'r')
	else:
		infile = sys.stdin

	if outfile_name:
		outfile =  open (outfile_name, 'w')
	else:
		outfile = sys.stdout

	
	do_conversion (infile, from_version, outfile, to_version)

	if infile_name:
		infile.close ()

	if outfile_name:
		outfile.close ()

	if __main__.edit:
		try:
			os.remove(infile_name + '~')
		except:
			pass
		os.rename (infile_name, infile_name + '~')
		os.rename (infile_name + '.NEW', infile_name)

	sys.stderr.write ('\n')
	sys.stderr.flush ()

edit = 0
to_version = ()
from_version = ()
outfile_name = ''

(options, files) = getopt.getopt (
	sys.argv[1:], 'o:f:t:seh', ['version', 'output', 'show-rules', 'help', 'edit', 'from=', 'to'])

for opt in options:
	o = opt[0]
	a = opt[1]
	if o== '--help' or o == '-h':
		usage ()
		sys.exit (0)
	if o == '--version' or o == '-v':
		print_version ()
		sys.exit (0)
	elif o== '--from' or o=='-f':
		from_version = str_to_tuple (a)
	elif o== '--to' or o=='-t':
		to_version = str_to_tuple (a)
	elif o== '--edit' or o == '-e':
		edit = 1
	elif o== '--show-rules' or o == '-s':
		show_rules (sys.stdout)
		sys.exit(0)
	elif o == '--output' or o == '-o':
		outfile_name = a
	else:
		print o
		raise getopt.error

identify ()
for f in files:
	if f == '-':
		f = ''
	try:
		do_one_file (f)
	except UnknownVersion:
		pass
