scripts/convert-ly.py

   1 #!@TARGET_PYTHON@
   2 #
   3 # convert-ly.py -- Update old LilyPond input files (fix name?)
   4 #
   5 # source file of the GNU LilyPond music typesetter
   6 #
   7 # (c) 1998--2007  Han-Wen Nienhuys <hanwen@xs4all.nl>
   8 #                 Jan Nieuwenhuizen <janneke@gnu.org>
   9 #
  10 # converting rules are found in python/convertrules.py
  11 #
  12
  13 import os
  14 import sys
  15 import re
  16
  17 """
  18 @relocate-preamble@
  19 """
  20
  21 import lilylib as ly
  22 global _;_=ly._
  23
  24 import convertrules
  25
  26 lilypond_version_re_str = '\\\\version *\"([0-9.]+)"'
  27 lilypond_version_re = re.compile (lilypond_version_re_str)
  28
  29
  30 help_summary = (
  31 _ ('''Update LilyPond input to newer version.  By default, update from the
  32 version taken from the \\version command, to the current LilyPond version.''')
  33 + _ ("Examples:")
  34 + '''
  35   convert-ly -e old.ly
  36   convert-ly --from=2.3.28 --to 2.5.21 foobar.ly
  37 ''')
  38
  39 copyright = ('Jan Nieuwenhuizen <janneke@gnu.org>',
  40              'Han-Wen Nienhuys <hanwen@xs4all.nl>')
  41
  42 program_name = os.path.basename (sys.argv[0])
  43 program_version = '@TOPLEVEL_VERSION@'
  44
  45 error_file_write = ly.stderr_write
  46
  47 def warning (s):
  48     ly.stderr_write (program_name + ": " + _ ("warning: %s") % s + '\n')
  49
  50 def error (s):
  51     ly.stderr_write (program_name + ": " + _ ("error: %s") % s + '\n')
  52
  53 def identify (port=sys.stderr):
  54     ly.encoded_write (port, '%s (GNU LilyPond) %s\n' % (program_name, program_version))
  55
  56 def warranty ():
  57     identify ()
  58     ly.encoded_write (sys.stdout, '''
  59 Copyright (c) %s by
  60
  61   Han-Wen Nienhuys
  62   Jan Nieuwenhuizen
  63
  64 %s
  65 %s
  66 '''  ( '2001--2006',
  67        _ ("Distributed under terms of the GNU General Public License."),
  68        _ ('It comes with NO WARRANTY.')))
  69
  70
  71 def get_option_parser ():
  72     p = ly.get_option_parser (usage=_ ("%s [OPTION]... FILE") % 'convert-ly',
  73                   description=help_summary,
  74                   add_help_option=False)
  75
  76     p.version="@TOPLEVEL_VERSION@"
  77     p.add_option("--version",
  78                  action="version",
  79                  help=_ ("show version number and exit"))
  80
  81     p.add_option("-h", "--help",
  82                  action="help",
  83                  help=_ ("show this help and exit"))
  84
  85     p.add_option ('-f', '--from',
  86               action="store",
  87               metavar=_ ("VERSION"),
  88               dest="from_version",
  89               help=_ ("start from VERSION [default: \\version found in file]"),
  90               default='')
  91
  92     p.add_option ('-e', '--edit', help=_ ("edit in place"),
  93               action='store_true')
  94
  95     p.add_option ('-n', '--no-version',
  96               help=_ ("do not add \\version command if missing"),
  97               action='store_true',
  98               dest='skip_version_add',
  99               default=False)
 100
 101     p.add_option ('-c', '--current-version',
 102               help=_ ("force updating \\version number to %s") % program_version,
 103               action='store_true',
 104               dest='force_current_version',
 105               default=False)
 106
 107     p.add_option ("-s", '--show-rules',
 108               help=_ ("show rules [default: --from=0, --to=%s]") % program_version,
 109               dest='show_rules',
 110               action='store_true', default=False)
 111
 112     p.add_option ('-t', '--to',
 113               help=_ ("convert to VERSION [default: %s]") % program_version,
 114               metavar=_ ('VERSION'),
 115               action='store',
 116               dest="to_version",
 117               default='')
 118
 119     p.add_option_group (ly.display_encode (_ ('Bugs')),
 120                         description=(_ ("Report bugs via")
 121                                      + ''' http://post.gmane.org/post.php'''
 122                                      '''?group=gmane.comp.gnu.lilypond.bugs\n'''))
 123
 124     return p
 125
 126
 127
 128 def str_to_tuple (s):
 129     return tuple ([int(n) for n in s.split ('.')])
 130
 131 def tup_to_str (t):
 132     return '.'.join (['%s' % x for x in t])
 133
 134 def version_cmp (t1, t2):
 135     for x in [0, 1, 2]:
 136         if t1[x] - t2[x]:
 137             return t1[x] - t2[x]
 138     return 0
 139
 140 def get_conversions (from_version, to_version):
 141     def is_applicable (v, f = from_version, t = to_version):
 142         return version_cmp (v[0], f) > 0 and version_cmp (v[0], t) <= 0
 143     return filter (is_applicable, convertrules.conversions)
 144
 145 def latest_version ():
 146     return convertrules.conversions[-1][0]
 147
 148 def show_rules (file, from_version, to_version):
 149     for x in convertrules.conversions:
 150         if (not from_version or x[0] > from_version) \
 151            and (not to_version or x[0] <= to_version):
 152             ly.encoded_write  (file, '%s: %s\n' % (tup_to_str (x[0]), x[2]))
 153
 154 def do_conversion (str, from_version, to_version):
 155     """Apply conversions from FROM_VERSION to TO_VERSION.  Return
 156 tuple (LAST,STR), with the last succesful conversion and the resulting
 157 string."""
 158     conv_list = get_conversions (from_version, to_version)
 159
 160     error_file_write (_ ("Applying conversion: "))
 161
 162     last_conversion = ()
 163     try:
 164         for x in conv_list:
 165             error_file_write (tup_to_str (x[0]))
 166             if x != conv_list[-1]:
 167                 error_file_write (', ')
 168             str = x[1] (str)
 169             last_conversion = x[0]
 170
 171     except convertrules.FatalConversionError:
 172         error_file_write ('\n'
 173                           + _ ("Error while converting")
 174                           + '\n'
 175                           + _ ("Stopping at last succesful rule")
 176                           + '\n')
 177
 178     return (last_conversion, str)
 179
 180
 181
 182 def guess_lilypond_version (input):
 183     m = lilypond_version_re.search (input)
 184     if m:
 185         return m.group (1)
 186     else:
 187         return ''
 188
 189 class FatalConversionError:
 190     pass
 191
 192 class UnknownVersion:
 193     pass
 194
 195 def do_one_file (infile_name):
 196     ly.stderr_write (_ ("Processing `%s\'... ") % infile_name)
 197     sys.stderr.write ('\n')
 198
 199     if infile_name:
 200         infile = open (infile_name, 'r')
 201         input = infile.read ()
 202         infile.close ()
 203     else:
 204         input = sys.stdin.read ()
 205
 206     from_version = None
 207     to_version = None
 208     if global_options.from_version:
 209         from_version = global_options.from_version
 210     else:
 211         guess = guess_lilypond_version (input)
 212         if not guess:
 213             raise UnknownVersion ()
 214         from_version = str_to_tuple (guess)
 215
 216     if global_options.to_version:
 217         to_version = global_options.to_version
 218     else:
 219         to_version = latest_version ()
 220
 221
 222     (last, result) = do_conversion (input, from_version, to_version)
 223
 224     if last:
 225         if global_options.force_current_version and last == to_version:
 226             last = str_to_tuple (program_version)
 227
 228         newversion = r'\version "%s"' % tup_to_str (last)
 229         if lilypond_version_re.search (result):
 230             result = re.sub (lilypond_version_re_str,
 231                      '\\' + newversion, result)
 232         elif not global_options.skip_version_add:
 233             result = newversion + '\n' + result
 234
 235         error_file_write ('\n')
 236
 237         if global_options.edit:
 238             try:
 239                 os.remove(infile_name + '~')
 240             except:
 241                 pass
 242             os.rename (infile_name, infile_name + '~')
 243             outfile = open (infile_name, 'w')
 244         else:
 245             outfile = sys.stdout
 246
 247
 248         outfile.write (result)
 249
 250     sys.stderr.flush ()
 251
 252 def do_options ():
 253     opt_parser = get_option_parser()
 254     (options, args) = opt_parser.parse_args ()
 255
 256
 257     if options.from_version:
 258         options.from_version = str_to_tuple (options.from_version)
 259     if options.to_version:
 260         options.to_version = str_to_tuple (options.to_version)
 261
 262     options.outfile_name = ''
 263     global global_options
 264     global_options = options
 265
 266     if not args and not options.show_rules:
 267         opt_parser.print_help ()
 268         sys.exit (2)
 269
 270     return args
 271
 272 def main ():
 273     files = do_options ()
 274
 275     # should parse files[] to read \version?
 276     if global_options.show_rules:
 277         show_rules (sys.stdout, global_options.from_version, global_options.to_version)
 278         sys.exit (0)
 279
 280     identify (sys.stderr)
 281
 282     for f in files:
 283         if f == '-':
 284             f = ''
 285         elif not os.path.isfile (f):
 286             error (_ ("cannot open file: `%s'") % f)
 287             if len (files) == 1:
 288                 sys.exit (1)
 289             continue
 290         try:
 291             do_one_file (f)
 292         except UnknownVersion:
 293             error (_ ("cannot determine version for `%s'.  Skipping") % f)
 294
 295     sys.stderr.write ('\n')
 296
 297 main ()