scripts/mup-to-ly.py

   1 #!@PYTHON@
   2
   3 # mup-to-ly.py --
   4 #
   5 # source file of the GNU LilyPond music typesetter
   6 #
   7 # (c) 1998 Jan Nieuwenhuizen <janneke@gnu.org>
   8
   9 # TODO: regex -> re.
  10
  11 name = 'mup-to-ly'
  12 version = '0.1'
  13
  14 import os
  15 import sys
  16
  17 import getopt
  18 from string import *
  19 import regex
  20 import regsub
  21 import time
  22
  23 def program_id ():
  24     return name + ' version ' + version;
  25
  26 def identify ():
  27     sys.stdout.write (program_id () + '\n')
  28
  29 def help ():
  30     sys.stdout.write ("Usage: %s [options] [files]\n"
  31                       "Convert mup to ly\n\n"
  32                       + "Options:\n"
  33                       + "  -h, --help             print this help\n"
  34                       % (program_name)
  35                       )
  36     sys.exit (0)
  37
  38 identify ()
  39 (options, files) = getopt.getopt (
  40     sys.argv[1:], 'hp:', ['help', 'package'])
  41 for opt in options:
  42     o = opt[0]
  43     a = opt[1]
  44     if o== '--help' or o == '-h':
  45         help ()
  46     elif o == '-p' or o == '--package':
  47         topdir = a
  48     else:
  49         print o
  50         raise getopt.error
  51
  52 def gulp_file (f):
  53         sys.stderr.write ('[%s' % f)
  54         try:
  55                 i = open (f)
  56                 i.seek (0, 2)
  57                 n = i.tell ()
  58                 i.seek (0,0)
  59         except:
  60                 sys.stderr.write ('can\'t open file %s\n ' % f)
  61                 return ''
  62         s = i.read (n)
  63         sys.stderr.write (']')
  64         if len (s) <= 0:
  65                 sys.stderr.write ('gulped empty file: %s\n'% f)
  66         return s
  67
  68 def line_to_ly (s):
  69         notes = ""
  70         o = 0
  71         i = regex.search (";", s)
  72         last_name = "c"
  73         last_duration = "4"
  74         while i >= 0:
  75                 note = s[o:o+i]
  76                 o = o + i
  77                 i = regex.search (";", s[o+1:])
  78                 if i >= 0 :
  79                         o = o + 1
  80                 name = regsub.gsub ("[0-9<>\.&]*", "", note)
  81                 duration = regsub.gsub ("[a-z+<>#+&\-]*", "", note)
  82                 duration = regsub.gsub (" ", "", duration)
  83                 if name:
  84                         last_name = name
  85                 else:
  86                         name = last_name
  87                 if duration:
  88                         last_duration = duration
  89                 else:
  90                         duration = last_duration
  91                 name = regsub.sub ("#", "is", name)
  92                 name = regsub.sub ("+", "'", name)
  93                 name = regsub.sub ("-", ",", name)
  94                 name = regsub.sub ("ms", "s1", name)
  95                 notes = notes + " %s%s" % (name, duration)
  96         return notes
  97
  98 def get_voice (staff, s, staffs):
  99         voice = len (staffs[staff-1]) + 1
 100         tag = "^%d [0-9-]*%d[0-9-]*:" % (staff, voice)
 101         notes = ""
 102         o = 0
 103         i = regex.search (tag, s)
 104         while i >= 0:
 105                 o = o + i
 106                 n = regex.search ("$", s[o:])
 107                 line = s[o:o+n]
 108                 line = regsub.sub (tag, "", line)
 109                 line = line_to_ly (line)
 110                 notes = notes + line
 111                 i = regex.search (tag, s[o+n:])
 112                 if i >= 0:
 113                         i = i + n
 114         if notes != "":
 115                 sys.stderr.write ('%d ' % voice)
 116                 staffs[staff-1].append (notes)
 117         return notes != ""
 118
 119 def get_staff (s, staffs):
 120         staff=len (staffs)
 121         i=1
 122         sys.stderr.write ('Staff %d ( ' % staff)
 123         while i:
 124                 i = get_voice (staff, s, staffs)
 125                 if not i:
 126                         sys.stderr.write (')\n')
 127                         staffs.append ([])
 128                         staff = staff + 1
 129                         sys.stderr.write ('Staff %d ( ' % staff)
 130                         i = get_voice (staff, s, staffs)
 131                         if not i:
 132                                 del staffs[staff-1]
 133         return 0
 134
 135 staffs=[[]]
 136 mup=files[0]
 137 ly = os.path.basename (os.path.splitext (mup)[0]) + ".ly"
 138 s = gulp_file (mup)
 139 sys.stderr.write ('\n')
 140 i=1
 141 while i:
 142         i=get_staff (s, staffs)
 143 sys.stderr.write ('\n')
 144 sys.stderr.write ('Ly output to: %s...' % ly)
 145 lyfile = open (ly, "w")
 146 for i in range (len (staffs)):
 147         for v in range (len (staffs[i])):
 148                 lyfile.write ("$staff%d_voice_%d = \\notes {\n %s\n}\n\n" % (i+1, v+1, staffs[i][v]))
 149 lyfile.write ("\\score{\n")
 150 lyfile.write ("\\notes <\n")
 151 for i in range (len (staffs)):
 152         lyfile.write ("\\type Staff=staff%s <\n" % chr(ord('A')+i))
 153         for v in range (len (staffs[i])):
 154                 lyfile.write ("{ \\$staff%d_voice_%d } " % (i+1, v+1))
 155         lyfile.write ("\n>\n")
 156 lyfile.write (">\n")
 157 lyfile.write ("\n}")
 158 lyfile.close ()
 159 sys.stderr.write ('\n')