buildscripts/new-chords.py

   1
   2 # to nwe chord syntax.
   3 import re
   4 import string
   5 import sys
   6 import getopt
   7 import os
   8
   9
  10 def sub_chord (m):
  11         str = m.group(1)
  12
  13         origstr =  '<%s>' % str
  14         if re.search (r'\\\\', str):
  15                 return origstr
  16
  17         if re.search (r'\\property', str):
  18                 return origstr
  19
  20         if re.match (r'^\s*\)?\s*\\[a-zA-Z]+', str):
  21                 return origstr
  22
  23         durs = []
  24         def sub_durs (m):
  25                 durs.append(m.group(2))
  26                 return m.group (1)
  27
  28         str = re.sub ("([a-z]+[,'!? ]*)([0-9.]+)", sub_durs, str)
  29         dur_str = ''
  30
  31         for d in durs:
  32                 if dur_str == '':
  33                         dur_str = d
  34                 if dur_str <> d:
  35                         return '<%s>' % m.group (1)
  36
  37         pslur_strs = ['']
  38         dyns = ['']
  39         slur_strs = ['']
  40
  41         last_str = ''
  42         while last_str <> str:
  43           last_str = str
  44           def sub_dyn_end (m):
  45                   dyns.append (' -\!')
  46                   return ' ' + m.group(2)
  47
  48           str = re.sub (r'(\\!)\s*([a-z]+)', sub_dyn_end, str)
  49           def sub_slurs(m):
  50                   if '-)' not in slur_strs:
  51                           slur_strs.append ( '-)')
  52                   return m.group(1)
  53           def sub_p_slurs(m):
  54                   if '-\)' not in slur_strs:
  55                           slur_strs.append ( '-\)')
  56                   return m.group(1)
  57           str = re.sub (r"\)[ ]*([a-z]+)", sub_slurs, str)
  58           str = re.sub (r"\\\)[ ]*([a-z]+)", sub_p_slurs, str)
  59           def sub_begin_slurs(m):
  60                   if '-(' not in slur_strs:
  61                           slur_strs.append ( '-(')
  62                   return m.group(1)
  63           str = re.sub (r"([a-z]+[,'!?0-9 ]*)\(", sub_begin_slurs, str)
  64           def sub_begin_p_slurs(m):
  65                   if '-\(' not in slur_strs:
  66                           slur_strs.append ( '-\(')
  67                   return m.group(1)
  68
  69           str = re.sub (r"([a-z]+[,'!?0-9 ]*)\\\(", sub_begin_p_slurs, str)
  70
  71           def sub_dyns (m):
  72                   s = m.group(0)
  73                   if s == '@STARTCRESC@':
  74                           slur_strs.append ("-\\<")
  75                   elif s == '@STARTDECRESC@':
  76                           slur_strs.append ("-\\>")
  77                   elif s == r'-?\\!':
  78                           slur_strs.append ('-\\!')
  79                   return ''
  80
  81           str = re.sub (r'@STARTCRESC@', sub_dyns, str)
  82           str = re.sub (r'-?\\!', sub_dyns, str)
  83
  84           def sub_articulations (m):
  85                   a = m.group(1)
  86                   if a not in slur_strs:
  87                           slur_strs.append (a)
  88                   return ''
  89
  90           str = re.sub (r"([_^-]\@ACCENT\@)", sub_articulations, str)
  91           str = re.sub (r"([_^-]\\[a-z]+)", sub_articulations, str)
  92           str = re.sub (r"([_^-][>_.+|^-])", sub_articulations, str)
  93
  94           def sub_pslurs(m):
  95                   slur_strs.append ( ' -\\)')
  96                   return m.group(1)
  97           str = re.sub (r"\\\)[ ]*([a-z]+)", sub_pslurs, str)
  98
  99         suffix = string.join (slur_strs, '') + string.join (pslur_strs, '') \
 100                  + string.join (dyns, '')
 101
 102         return '@STARTCHORD@%s@ENDCHORD@%s%s' % (str , dur_str, suffix)
 103
 104
 105
 106
 107 simend = '}'
 108 simstart = "\n\\simultaneous {"
 109 chordstart = '<'
 110 chordend = '>'
 111
 112 old_syntax = 1
 113
 114 if old_syntax:
 115         simend = '>'
 116         simstart = "<"
 117         chordstart = '<<'
 118         chordend = '>>'
 119
 120
 121 marker_str = '%% new-chords-done %%'
 122
 123 def sub_chords (str):
 124         if re.search (marker_str,str):
 125                 return str
 126
 127         str= re.sub (r'\\<', '@STARTCRESC@', str)
 128         str= re.sub (r'\\>', '@STARTDECRESC@', str)
 129         str= re.sub (r'([_^-])>', r'\1@ACCENT@', str)
 130         str = re.sub ('<([^<>{}]+)>', sub_chord, str)
 131
 132         str = re.sub ('<([^?])', r'%s\1' % simstart, str)
 133         str = re.sub ('>([^?])', r'%s\1' % simend,  str)
 134         str = re.sub ('@STARTCRESC@', r'\\<', str)
 135         str = re.sub ('@STARTDECRESC@', r'\\>' ,str)
 136         str = re.sub (r'\\context *Voice *@STARTCHORD@', '@STARTCHORD@', str)
 137         str = re.sub ('@STARTCHORD@', chordstart, str)
 138         str = re.sub ('@ENDCHORD@', chordend, str)
 139         str = re.sub (r'@ACCENT@', '>', str)
 140         return str
 141
 142 (opts, files)= getopt.getopt( sys.argv[1:], 'e',['edit'])
 143 edit = 0
 144 for (o,a) in opts:
 145         if o == '-e' or o == '--edit':
 146                 edit = 1
 147
 148 for a in files:
 149         str = open (a).read()
 150         if re.search (marker_str, str):
 151                 continue
 152
 153         sys.stderr.write ("processing %s\n" %a)
 154
 155         str = sub_chords (str)  + marker_str + '\n'
 156
 157         if edit:
 158                 open (a + '.NEW', 'w').write (str)
 159                 os.rename (a, a + '~')
 160                 os.rename (a + '.NEW', a)
 161         else:
 162                 print str