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--2008  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 ly.require_python_version ()
  25
  26 import convertrules
  27
  28 lilypond_version_re_str = '\\\\version *\"([0-9.]+)"'
  29 lilypond_version_re = re.compile (lilypond_version_re_str)
  30
  31
  32 help_summary = (
  33 _ ('''Update LilyPond input to newer version.  By default, update from the
  34 version taken from the \\version command, to the current LilyPond version.''')
  35 + _ ("Examples:")
  36 + '''
  37   $ convert-ly -e old.ly
  38   $ convert-ly --from=2.3.28 --to=2.5.21 foobar.ly > foobar-new.ly
  39 ''')
  40
  41 copyright = ('Jan Nieuwenhuizen <janneke@gnu.org>',
  42              'Han-Wen Nienhuys <hanwen@xs4all.nl>')
  43
  44 program_name = os.path.basename (sys.argv[0])
  45 program_version = '@TOPLEVEL_VERSION@'
  46
  47 error_file_write = ly.stderr_write
  48
  49 def warning (s):
  50     ly.stderr_write (program_name + ": " + _ ("warning: %s") % s + '\n')
  51
  52 def error (s):
  53     ly.stderr_write (program_name + ": " + _ ("error: %s") % s + '\n')
  54
  55 def identify (port=sys.stderr):
  56     ly.encoded_write (port, '%s (GNU LilyPond) %s\n' % (program_name, program_version))
  57
  58 def warranty ():
  59     identify ()
  60     ly.encoded_write (sys.stdout, '''
  61 Copyright (c) %s by
  62
  63   Han-Wen Nienhuys
  64   Jan Nieuwenhuizen
  65
  66 %s
  67 %s
  68 '''  ( '2001--2006',
  69        _ ("Distributed under terms of the GNU General Public License."),
  70        _ ('It comes with NO WARRANTY.')))
  71
  72
  73 def get_option_parser ():
  74     p = ly.get_option_parser (usage=_ ("%s [OPTION]... FILE") % 'convert-ly',
  75                   description=help_summary,
  76                   add_help_option=False)
  77
  78     p.version="@TOPLEVEL_VERSION@"
  79     p.add_option("--version",
  80                  action="version",
  81                  help=_ ("show version number and exit"))
  82
  83     p.add_option("-h", "--help",
  84                  action="help",
  85                  help=_ ("show this help and exit"))
  86
  87     p.add_option ('-f', '--from',
  88               action="store",
  89               metavar=_ ("VERSION"),
  90               dest="from_version",
  91               help=_ ("start from VERSION [default: \\version found in file]"),
  92               default='')
  93
  94     p.add_option ('-e', '--edit', help=_ ("edit in place"),
  95               action='store_true')
  96
  97     p.add_option ('-n', '--no-version',
  98               help=_ ("do not add \\version command if missing"),
  99               action='store_true',
 100               dest='skip_version_add',
 101               default=False)
 102
 103     p.add_option ('-c', '--current-version',
 104               help=_ ("force updating \\version number to %s") % program_version,
 105               action='store_true',
 106               dest='force_current_version',
 107               default=False)
 108
 109     p.add_option ("-s", '--show-rules',
 110               help=_ ("show rules [default: -f 0, -t %s]") % program_version,
 111               dest='show_rules',
 112               action='store_true', default=False)
 113
 114     p.add_option ('-t', '--to',
 115               help=_ ("convert to VERSION [default: %s]") % program_version,
 116               metavar=_ ('VERSION'),
 117               action='store',
 118               dest="to_version",
 119               default='')
 120
 121     p.add_option_group ('',
 122                         description=(
 123             _ ("Report bugs via %s")
 124             % 'http://post.gmane.org/post.php'
 125             '?group=gmane.comp.gnu.lilypond.bugs') + '\n')
 126
 127     return p
 128
 129
 130
 131 def str_to_tuple (s):
 132     return tuple ([int(n) for n in s.split ('.')])
 133
 134 def tup_to_str (t):
 135     return '.'.join (['%s' % x for x in t])
 136
 137 def version_cmp (t1, t2):
 138     for x in [0, 1, 2]:
 139         if t1[x] - t2[x]:
 140             return t1[x] - t2[x]
 141     return 0
 142
 143 def get_conversions (from_version, to_version):
 144     def is_applicable (v, f = from_version, t = to_version):
 145         return version_cmp (v[0], f) > 0 and version_cmp (v[0], t) <= 0
 146     return filter (is_applicable, convertrules.conversions)
 147
 148 def latest_version ():
 149     return convertrules.conversions[-1][0]
 150
 151 def show_rules (file, from_version, to_version):
 152     for x in convertrules.conversions:
 153         if (not from_version or x[0] > from_version) \
 154            and (not to_version or x[0] <= to_version):
 155             ly.encoded_write  (file, '%s: %s\n' % (tup_to_str (x[0]), x[2]))
 156
 157 def do_conversion (str, from_version, to_version):
 158     """Apply conversions from FROM_VERSION to TO_VERSION.  Return
 159 tuple (LAST,STR), with the last succesful conversion and the resulting
 160 string."""
 161     conv_list = get_conversions (from_version, to_version)
 162
 163     error_file_write (_ ("Applying conversion: "))
 164
 165     last_conversion = ()
 166     try:
 167         for x in conv_list:
 168             error_file_write (tup_to_str (x[0]))
 169             if x != conv_list[-1]:
 170                 error_file_write (', ')
 171             str = x[1] (str)
 172             last_conversion = x[0]
 173
 174     except convertrules.FatalConversionError:
 175         error_file_write ('\n'
 176                           + _ ("Error while converting")
 177                           + '\n'
 178                           + _ ("Stopping at last successful rule")
 179                           + '\n')
 180
 181     return (last_conversion, str)
 182
 183
 184
 185 def guess_lilypond_version (input):
 186     m = lilypond_version_re.search (input)
 187     if m:
 188         return m.group (1)
 189     else:
 190         return ''
 191
 192 class FatalConversionError:
 193     pass
 194
 195 class UnknownVersion:
 196     pass
 197
 198 def do_one_file (infile_name):
 199     ly.stderr_write (_ ("Processing `%s\'... ") % infile_name)
 200     sys.stderr.write ('\n')
 201
 202     if infile_name:
 203         infile = open (infile_name, 'r')
 204         input = infile.read ()
 205         infile.close ()
 206     else:
 207         input = sys.stdin.read ()
 208
 209     from_version = None
 210     to_version = None
 211     if global_options.from_version:
 212         from_version = global_options.from_version
 213     else:
 214         guess = guess_lilypond_version (input)
 215         if not guess:
 216             raise UnknownVersion ()
 217         from_version = str_to_tuple (guess)
 218
 219     if global_options.to_version:
 220         to_version = global_options.to_version
 221     else:
 222         to_version = latest_version ()
 223
 224
 225     (last, result) = do_conversion (input, from_version, to_version)
 226
 227     if last:
 228         if global_options.force_current_version and last == to_version:
 229             last = str_to_tuple (program_version)
 230
 231         newversion = r'\version "%s"' % tup_to_str (last)
 232         if lilypond_version_re.search (result):
 233             result = re.sub (lilypond_version_re_str,
 234                      '\\' + newversion, result)
 235         elif not global_options.skip_version_add:
 236             result = newversion + '\n' + result
 237
 238         error_file_write ('\n')
 239
 240         if global_options.edit:
 241             try:
 242                 os.remove(infile_name + '~')
 243             except:
 244                 pass
 245             os.rename (infile_name, infile_name + '~')
 246             outfile = open (infile_name, 'w')
 247         else:
 248             outfile = sys.stdout
 249
 250
 251         outfile.write (result)
 252
 253     sys.stderr.flush ()
 254
 255 def do_options ():
 256     opt_parser = get_option_parser()
 257     (options, args) = opt_parser.parse_args ()
 258
 259
 260     if options.from_version:
 261         options.from_version = str_to_tuple (options.from_version)
 262     if options.to_version:
 263         options.to_version = str_to_tuple (options.to_version)
 264
 265     options.outfile_name = ''
 266     global global_options
 267     global_options = options
 268
 269     if not args and not options.show_rules:
 270         opt_parser.print_help ()
 271         sys.exit (2)
 272
 273     return args
 274
 275 def main ():
 276     files = do_options ()
 277
 278     # should parse files[] to read \version?
 279     if global_options.show_rules:
 280         show_rules (sys.stdout, global_options.from_version, global_options.to_version)
 281         sys.exit (0)
 282
 283     identify (sys.stderr)
 284
 285     for f in files:
 286         if f == '-':
 287             f = ''
 288         elif not os.path.isfile (f):
 289             error (_ ("cannot open file: `%s'") % f)
 290             if len (files) == 1:
 291                 sys.exit (1)
 292             continue
 293         try:
 294             do_one_file (f)
 295         except UnknownVersion:
 296             error (_ ("cannot determine version for `%s'.  Skipping") % f)
 297
 298     sys.stderr.write ('\n')
 299
 300 main ()