python/lilylib.py

   1 ################################################################
   2 # lilylib.py -- options and stuff
   3 #
   4 # source file of the GNU LilyPond music typesetter
   5 #
   6 # (c) 1998--2002  Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 #                 Jan Nieuwenhuizen <janneke@gnu.org>
   8
   9 ###  subst:\(^\|[^._a-z]\)\(abspath\|identify\|warranty\|progress\|warning\|error\|exit\|getopt_args\|option_help_str\|options_help_str\|help\|setup_temp\|read_pipe\|system\|cleanup_temp\|strip_extension\|cp_to_dir\|mkdir_p\|init\) *(
  10 ###  replace:\1ly.\2 (
  11
  12 ### subst: \(help_summary\|keep_temp_dir_p\|option_definitions\|original_dir\|program_name\|pseudo_filter_p\|temp_dir\|verbose_p\)
  13
  14 import __main__
  15 import shutil
  16 import string
  17 import sys
  18 import tempfile
  19
  20 ################################################################
  21 # Users of python modules should include this snippet
  22 # and customize variables below.
  23
  24 # We'll suffer this path init stuff as long as we don't install our
  25 # python packages in <prefix>/lib/pythonx.y (and don't kludge around
  26 # it as we do with teTeX on Red Hat Linux: set some environment var
  27 # (PYTHONPATH) in profile)
  28
  29 # If set, LILYPONDPREFIX must take prevalence
  30 # if datadir is not set, we're doing a build and LILYPONDPREFIX
  31 import getopt, os, sys
  32 datadir = '@local_lilypond_datadir@'
  33 if not os.path.isdir (datadir):
  34         datadir = '@lilypond_datadir@'
  35 if os.environ.has_key ('LILYPONDPREFIX') :
  36         datadir = os.environ['LILYPONDPREFIX']
  37         while datadir[-1] == os.sep:
  38                 datadir= datadir[:-1]
  39
  40 sys.path.insert (0, os.path.join (datadir, 'python'))
  41
  42 # Customize these
  43 if __name__ == '__main__':
  44         import lilylib as ly
  45         global _;_=ly._
  46         global re;re = ly.re
  47
  48         # lilylib globals
  49         program_name = 'unset'
  50         pseudo_filter_p = 0
  51         original_dir = os.getcwd ()
  52         temp_dir = os.path.join (original_dir,  '%s.dir' % program_name)
  53         keep_temp_dir_p = 0
  54         verbose_p = 0
  55
  56         help_summary = _ ("lilylib module")
  57
  58         option_definitions = [
  59                 ('', 'h', 'help', _ ("this help")),
  60                 ]
  61
  62         from lilylib import *
  63 ################################################################
  64
  65 # Handle bug in Python 1.6-2.1
  66 #
  67 # there are recursion limits for some patterns in Python 1.6 til 2.1.
  68 # fix this by importing pre instead. Fix by Mats.
  69
  70 if float (sys.version[0:3]) <= 2.1:
  71         try:
  72                 import pre
  73                 re = pre
  74                 del pre
  75         except ImportError:
  76                 import re
  77 else:
  78         import re
  79
  80 # Attempt to fix problems with limited stack size set by Python!
  81 # Sets unlimited stack size. Note that the resource module only
  82 # is available on UNIX.
  83 try:
  84        import resource
  85        resource.setrlimit (resource.RLIMIT_STACK, (-1, -1))
  86 except:
  87        pass
  88
  89 localedir = '@localedir@'
  90 try:
  91         import gettext
  92         gettext.bindtextdomain ('lilypond', localedir)
  93         gettext.textdomain ('lilypond')
  94         _ = gettext.gettext
  95 except:
  96         def _ (s):
  97                 return s
  98 underscore = _
  99
 100 program_version = '@TOPLEVEL_VERSION@'
 101 if program_version == '@' + 'TOPLEVEL_VERSION' + '@':
 102         program_version = '1.7.5'
 103
 104 def identify (port):
 105         port.write ('%s (GNU LilyPond) %s\n' % (__main__.program_name, program_version))
 106
 107 def warranty ():
 108         identify (sys.stdout)
 109         sys.stdout.write ('\n')
 110         sys.stdout.write (_ ('Copyright (c) %s by' % ' 1998--2002'))
 111         sys.stdout.write ('\n')
 112         map (lambda x: sys.stdout.write ('  %s\n' % x), __main__.copyright)
 113         sys.stdout.write ('\n')
 114         sys.stdout.write (_ ("Distributed under terms of the GNU General Public License."))
 115         sys.stdout.write ('\n')
 116         sys.stdout.write (_ ("It comes with NO WARRANTY."))
 117         sys.stdout.write ('\n')
 118
 119 def progress (s):
 120         sys.stderr.write (s)
 121
 122 def warning (s):
 123         sys.stderr.write (__main__.program_name + ": " + _ ("warning: ") + s + '\n')
 124
 125 def error (s):
 126         sys.stderr.write (__main__.program_name + ": " + _ ("error: ") + s + '\n')
 127
 128 def exit (i):
 129         if __main__.verbose_p:
 130                 raise _ ('Exiting (%d)...') % i
 131         else:
 132                 sys.exit (1)
 133
 134 def getopt_args (opts):
 135         '''Construct arguments (LONG, SHORT) for getopt from  list of options.'''
 136         short = ''
 137         long = []
 138         for o in opts:
 139                 if o[1]:
 140                         short = short + o[1]
 141                         if o[0]:
 142                                 short = short + ':'
 143                 if o[2]:
 144                         l = o[2]
 145                         if o[0]:
 146                                 l = l + '='
 147                         long.append (l)
 148         return (short, long)
 149
 150 def option_help_str (o):
 151         '''Transform one option description (4-tuple ) into neatly formatted string'''
 152         sh = '  '
 153         if o[1]:
 154                 sh = '-%s' % o[1]
 155
 156         sep = ' '
 157         if o[1] and o[2]:
 158                 sep = ','
 159
 160         long = ''
 161         if o[2]:
 162                 long= '--%s' % o[2]
 163
 164         arg = ''
 165         if o[0]:
 166                 if o[2]:
 167                         arg = '='
 168                 arg = arg + o[0]
 169         return '  ' + sh + sep + long + arg
 170
 171
 172 def options_help_str (opts):
 173         '''Convert a list of options into a neatly formatted string'''
 174         w = 0
 175         strs =[]
 176         helps = []
 177
 178         for o in opts:
 179                 s = option_help_str (o)
 180                 strs.append ((s, o[3]))
 181                 if len (s) > w:
 182                         w = len (s)
 183
 184         str = ''
 185         for s in strs:
 186                 str = str + '%s%s%s\n' % (s[0], ' ' * (w - len(s[0])  + 3), s[1])
 187         return str
 188
 189 def help ():
 190         ls = [(_ ("Usage: %s [OPTION]... FILE") % __main__.program_name),
 191               ('\n\n'),
 192               (__main__.help_summary),
 193               ('\n\n'),
 194               (_ ("Options:")),
 195               ('\n'),
 196               (options_help_str (__main__.option_definitions)),
 197               ('\n\n'),
 198               (_ ("Report bugs to %s") % 'bug-lilypond@gnu.org'),
 199               ('\n')]
 200         map (sys.stdout.write, ls)
 201
 202 def setup_temp ():
 203
 204         ''' Create a temporary directory, and return its name. '''
 205
 206         if not __main__.keep_temp_dir_p:
 207                 __main__.temp_dir = tempfile.mktemp (__main__.program_name)
 208         try:
 209                 os.mkdir (__main__.temp_dir, 0777)
 210         except OSError:
 211                 pass
 212
 213         return __main__.temp_dir
 214
 215 def command_name (cmd):
 216         return re.match ('^[ \t]*([^ \t]*)', cmd).group (1)
 217
 218 def error_log (name):
 219         return os.path.join (__main__.temp_dir, '%s.errorlog' % name)
 220
 221 def read_pipe (cmd, mode = 'r'):
 222         redirect = ''
 223         if __main__.verbose_p:
 224                 progress (_ ("Opening pipe `%s\'") % cmd)
 225                 redirect = ' 2>%s' % error_log (command_name (cmd))
 226         pipe = os.popen (cmd + redirect, mode)
 227         output = pipe.read ()
 228         status = pipe.close ()
 229         # successful pipe close returns 'None'
 230         if not status:
 231                 status = 0
 232         signal = 0x0f & status
 233         exit_status = status >> 8
 234
 235         if status:
 236                 error (_ ("`%s\' failed (%d)") % (cmd, exit_status))
 237                 if not __main__.verbose_p:
 238                         error (_ ("The error log is as follows:"))
 239                         sys.stderr.write (open (error_log (command_name (cmd)).read ()))
 240                 exit (status)
 241         if __main__.verbose_p:
 242                 progress ('\n')
 243         return output
 244
 245 def system (cmd, ignore_error = 0, progress_p = 0):
 246
 247         '''System CMD.  If IGNORE_ERROR, do not complain when CMD
 248 returns non zero.  If PROGRESS_P, always show progress.
 249
 250 RETURN VALUE
 251
 252 Exit status of CMD '''
 253
 254         name = command_name (cmd)
 255
 256         if __main__.verbose_p:
 257                 progress_p = 1
 258                 progress (_ ("Invoking `%s\'") % cmd)
 259         else:
 260                 progress ( _("Running %s...") % name)
 261
 262         redirect = ''
 263         if not progress_p:
 264                 redirect = ' 1>/dev/null 2>' + error_log (name)
 265         elif __main__.pseudo_filter_p:
 266                 redirect = ' 1>/dev/null'
 267
 268         status = os.system (cmd + redirect)
 269         signal = 0x0f & status
 270         exit_status = status >> 8
 271
 272         if status:
 273
 274                 exit_type =  'status %d' % exit_status
 275                 if signal:
 276                         exit_type = 'signal %d' % signal
 277
 278                 msg = _ ("`%s\' failed (%s)") % (name, exit_type)
 279                 if ignore_error:
 280                         if __main__.verbose_p:
 281                                 warning (msg + ' ' + _ ("(ignored)"))
 282                 else:
 283                         error (msg)
 284                         if not progress_p:
 285                                 error (_ ("The error log is as follows:"))
 286                                 sys.stderr.write (open (error_log (name)).read ())
 287                         exit (status)
 288
 289         progress ('\n')
 290         return status
 291
 292 def cleanup_temp ():
 293         if not __main__.keep_temp_dir_p:
 294                 if __main__.verbose_p:
 295                         progress (_ ("Cleaning %s...") % __main__.temp_dir)
 296                 shutil.rmtree (__main__.temp_dir)
 297                 if __main__.verbose_p:
 298                         progress ('\n')
 299
 300
 301 def strip_extension (f, ext):
 302         (p, e) = os.path.splitext (f)
 303         if e == ext:
 304                 e = ''
 305         return p + e
 306
 307
 308 def cp_to_dir (pattern, dir):
 309         "Copy files matching re PATTERN from cwd to DIR"
 310         # Duh.  Python style portable: cp *.EXT OUTDIR
 311         # system ('cp *.%s %s' % (ext, outdir), 1)
 312         files = filter (lambda x, p=pattern: re.match (p, x), os.listdir ('.'))
 313         map (lambda x, d=dir: shutil.copy2 (x, os.path.join (d, x)), files)
 314
 315
 316 # Python < 1.5.2 compatibility
 317 #
 318 # On most platforms, this is equivalent to
 319 #`normpath(join(os.getcwd()), PATH)'.  *Added in Python version 1.5.2*
 320 if os.path.__dict__.has_key ('abspath'):
 321         abspath = os.path.abspath
 322 else:
 323         def abspath (path):
 324                 return os.path.normpath (os.path.join (os.getcwd (), path))
 325
 326 if os.__dict__.has_key ('makedirs'):
 327         makedirs = os.makedirs
 328 else:
 329         def makedirs (dir, mode=0777):
 330                 system ('mkdir -p %s' % dir)
 331
 332
 333 def mkdir_p (dir, mode=0777):
 334         if not os.path.isdir (dir):
 335                 makedirs (dir, mode)
 336
 337
 338 environment = {}
 339
 340 # tex needs lots of memory, more than it gets by default on Debian
 341 non_path_environment = {
 342         'extra_mem_top' : '1000000',
 343         'extra_mem_bottom' : '1000000',
 344         'pool_size' : '250000',
 345 }
 346
 347 def setup_environment ():
 348         global environment
 349
 350         kpse = read_pipe ('kpsexpand \$TEXMF')
 351         texmf = re.sub ('[ \t\n]+$','', kpse)
 352         type1_paths = read_pipe ('kpsewhich -expand-path=\$T1FONTS')
 353
 354         environment = {
 355                 # TODO: * prevent multiple addition.
 356                 #       * clean TEXINPUTS, MFINPUTS, TFMFONTS,
 357                 #         as these take prevalence over $TEXMF
 358                 #         and thus may break tex run?
 359                 'TEXMF' : "{%s,%s}" % (datadir, texmf) ,
 360                 'GS_FONTPATH' : type1_paths,
 361                 'GS_LIB' : datadir + '/ps',
 362                 }
 363
 364         # $TEXMF is special, previous value is already taken care of
 365         if os.environ.has_key ('TEXMF'):
 366                 del os.environ['TEXMF']
 367
 368         for key in environment.keys ():
 369                 val = environment[key]
 370                 if os.environ.has_key (key):
 371                         val = os.environ[key] + os.pathsep + val
 372                 os.environ[key] = val
 373
 374         for key in non_path_environment.keys ():
 375                 val = non_path_environment[key]
 376                 os.environ[key] = val
 377
 378 def print_environment ():
 379         for (k,v) in os.environ.items ():
 380                 sys.stderr.write ("%s=\"%s\"\n" % (k, v))
 381
 382 def get_bbox (filename):
 383         bbox = filename + '.bbox'
 384         ## -sOutputFile does not work with bbox?
 385         cmd = 'gs -sDEVICE=bbox -q -dNOPAUSE %s -c quit 2>%s' % \
 386               (filename, bbox)
 387         system (cmd, progress_p = 1)
 388         box = open (bbox).read ()
 389         m = re.match ('^%%BoundingBox: ([0-9]+) ([0-9]+) ([0-9]+) ([0-9]+)',
 390                       box)
 391         gr = []
 392         if m:
 393                 gr = map (string.atoi, m.groups ())
 394
 395         return gr
 396
 397 def make_preview (name):
 398         ## ly2dvi/lilypond-book discrepancy
 399         preview_ps = name + '.preview.ps'
 400         if not os.path.isfile (preview_ps):
 401                 preview_ps = name + '.eps'
 402         bbox = get_bbox (preview_ps)
 403         trans_ps = name + '.trans.ps'
 404         png = name + '.png'
 405
 406         margin = 0
 407         fo = open (trans_ps, 'w')
 408         fo.write ('%d %d translate\n' % (-bbox[0] + margin,
 409                                          -bbox[1] + margin))
 410         fo.close ()
 411
 412         x = (2* margin + bbox[2] - bbox[0]) \
 413             * __main__.preview_resolution / 72.0
 414         y = (2* margin + bbox[3] - bbox[1]) \
 415             * __main__.preview_resolution / 72.0
 416         if x == 0:
 417                 x = 1
 418         if y == 0:
 419                 y = 1
 420
 421         cmd = r'''gs -g%dx%d -sDEVICE=pnggray  -dTextAlphaBits=4 -dGraphicsAlphaBits=4  -q -sOutputFile=%s -r%d -dNOPAUSE %s %s -c quit ''' % \
 422               (x, y, png, __main__.preview_resolution, trans_ps, preview_ps)
 423
 424         system (cmd)
 425
 426         status = system (cmd)
 427         signal = 0xf & status
 428         exit_status = status >> 8
 429
 430         if status:
 431                 os.unlink (png)
 432                 error (_ ("Removing output file"))
 433                 exit (1)