python/lilylib.py

   1 ################################################################
   2 # lilylib.py -- options and stuff
   3 #
   4 # source file of the GNU LilyPond music typesetter
   5 #
   6 # (c)  1998--2003  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
  43
  44 # Customize these
  45 if __name__ == '__main__':
  46         import lilylib as ly
  47         global _;_=ly._
  48         global re;re = ly.re
  49
  50         # lilylib globals
  51         program_name = 'unset'
  52         pseudo_filter_p = 0
  53         original_dir = os.getcwd ()
  54         temp_dir = os.path.join (original_dir,  '%s.dir' % program_name)
  55         keep_temp_dir_p = 0
  56         verbose_p = 0
  57
  58         help_summary = _ ("lilylib module")
  59
  60         option_definitions = [
  61                 ('', 'h', 'help', _ ("this help")),
  62                 ]
  63
  64         from lilylib import *
  65 ################################################################
  66
  67 # Handle bug in Python 1.6-2.1
  68 #
  69 # there are recursion limits for some patterns in Python 1.6 til 2.1.
  70 # fix this by importing pre instead. Fix by Mats.
  71
  72 if float (sys.version[0:3]) <= 2.1:
  73         try:
  74                 import pre
  75                 re = pre
  76                 del pre
  77         except ImportError:
  78                 import re
  79 else:
  80         import re
  81
  82 # Attempt to fix problems with limited stack size set by Python!
  83 # Sets unlimited stack size. Note that the resource module only
  84 # is available on UNIX.
  85 try:
  86        import resource
  87        resource.setrlimit (resource.RLIMIT_STACK, (-1, -1))
  88 except:
  89        pass
  90
  91 localedir = '@localedir@'
  92 try:
  93         import gettext
  94         gettext.bindtextdomain ('lilypond', localedir)
  95         gettext.textdomain ('lilypond')
  96         _ = gettext.gettext
  97 except:
  98         def _ (s):
  99                 return s
 100 underscore = _
 101
 102 program_version = '@TOPLEVEL_VERSION@'
 103 if program_version == '@' + 'TOPLEVEL_VERSION' + '@':
 104         program_version = '1.7.14'
 105
 106 def identify (port):
 107         port.write ('%s (GNU LilyPond) %s\n' % (__main__.program_name, program_version))
 108
 109 def warranty ():
 110         identify (sys.stdout)
 111         sys.stdout.write ('\n')
 112         sys.stdout.write (_ ('Copyright (c) %s by' % ' 1998--2003'))
 113         sys.stdout.write ('\n')
 114         map (lambda x: sys.stdout.write ('  %s\n' % x), __main__.copyright)
 115         sys.stdout.write ('\n')
 116         sys.stdout.write (_ ("Distributed under terms of the GNU General Public License."))
 117         sys.stdout.write ('\n')
 118         sys.stdout.write (_ ("It comes with NO WARRANTY."))
 119         sys.stdout.write ('\n')
 120
 121 def progress (s):
 122         sys.stderr.write (s)
 123
 124 def warning (s):
 125         sys.stderr.write (__main__.program_name + ": " + _ ("warning: ") + s + '\n')
 126
 127 def error (s):
 128         sys.stderr.write (__main__.program_name + ": " + _ ("error: ") + s + '\n')
 129
 130 def exit (i):
 131         if __main__.verbose_p:
 132                 raise _ ('Exiting (%d)...') % i
 133         else:
 134                 sys.exit (1)
 135
 136 def getopt_args (opts):
 137         '''Construct arguments (LONG, SHORT) for getopt from  list of options.'''
 138         short = ''
 139         long = []
 140         for o in opts:
 141                 if o[1]:
 142                         short = short + o[1]
 143                         if o[0]:
 144                                 short = short + ':'
 145                 if o[2]:
 146                         l = o[2]
 147                         if o[0]:
 148                                 l = l + '='
 149                         long.append (l)
 150         return (short, long)
 151
 152 def option_help_str (o):
 153         '''Transform one option description (4-tuple ) into neatly formatted string'''
 154         sh = '  '
 155         if o[1]:
 156                 sh = '-%s' % o[1]
 157
 158         sep = ' '
 159         if o[1] and o[2]:
 160                 sep = ','
 161
 162         long = ''
 163         if o[2]:
 164                 long= '--%s' % o[2]
 165
 166         arg = ''
 167         if o[0]:
 168                 if o[2]:
 169                         arg = '='
 170                 arg = arg + o[0]
 171         return '  ' + sh + sep + long + arg
 172
 173
 174 def options_help_str (opts):
 175         '''Convert a list of options into a neatly formatted string'''
 176         w = 0
 177         strs =[]
 178         helps = []
 179
 180         for o in opts:
 181                 s = option_help_str (o)
 182                 strs.append ((s, o[3]))
 183                 if len (s) > w:
 184                         w = len (s)
 185
 186         str = ''
 187         for s in strs:
 188                 str = str + '%s%s%s\n' % (s[0], ' ' * (w - len(s[0])  + 3), s[1])
 189         return str
 190
 191 def help ():
 192         ls = [(_ ("Usage: %s [OPTION]... FILE") % __main__.program_name),
 193               ('\n\n'),
 194               (__main__.help_summary),
 195               ('\n\n'),
 196               (_ ("Options:")),
 197               ('\n'),
 198               (options_help_str (__main__.option_definitions)),
 199               ('\n\n'),
 200               (_ ("Report bugs to %s") % 'bug-lilypond@gnu.org'),
 201               ('\n')]
 202         map (sys.stdout.write, ls)
 203
 204 def setup_temp ():
 205
 206         ''' Create a temporary directory, and return its name. '''
 207
 208         if not __main__.keep_temp_dir_p:
 209                 __main__.temp_dir = tempfile.mktemp (__main__.program_name)
 210         try:
 211                 os.mkdir (__main__.temp_dir, 0700)
 212         except OSError:
 213                 pass
 214
 215         return __main__.temp_dir
 216
 217 def command_name (cmd):
 218         return re.match ('^[ \t]*([^ \t]*)', cmd).group (1)
 219
 220 def error_log (name):
 221         return os.path.join (__main__.temp_dir, '%s.errorlog' % name)
 222
 223 def read_pipe (cmd, mode = 'r'):
 224         redirect = ''
 225         if __main__.verbose_p:
 226                 progress (_ ("Opening pipe `%s\'") % cmd)
 227                 redirect = ' 2>%s' % error_log (command_name (cmd))
 228         pipe = os.popen (cmd + redirect, mode)
 229         output = pipe.read ()
 230         status = pipe.close ()
 231         # successful pipe close returns 'None'
 232         if not status:
 233                 status = 0
 234         signal = 0x0f & status
 235         exit_status = status >> 8
 236
 237         if status:
 238                 error (_ ("`%s\' failed (%d)") % (cmd, exit_status))
 239                 if not __main__.verbose_p:
 240                         error (_ ("The error log is as follows:"))
 241                         sys.stderr.write (open (error_log (command_name (cmd)).read ()))
 242                 exit (status)
 243         if __main__.verbose_p:
 244                 progress ('\n')
 245         return output
 246
 247 def system (cmd, ignore_error = 0, progress_p = 0):
 248
 249         '''System CMD.  If IGNORE_ERROR, do not complain when CMD
 250 returns non zero.  If PROGRESS_P, always show progress.
 251
 252 RETURN VALUE
 253
 254 Exit status of CMD '''
 255
 256         name = command_name (cmd)
 257
 258         if __main__.verbose_p:
 259                 progress_p = 1
 260                 progress (_ ("Invoking `%s\'") % cmd)
 261         else:
 262                 progress ( _("Running %s...") % name)
 263
 264         redirect = ''
 265         if not progress_p:
 266                 redirect = ' 1>/dev/null 2>' + error_log (name)
 267         elif __main__.pseudo_filter_p:
 268                 redirect = ' 1>/dev/null'
 269
 270         status = os.system (cmd + redirect)
 271         signal = 0x0f & status
 272         exit_status = status >> 8
 273
 274         if status:
 275
 276                 exit_type =  'status %d' % exit_status
 277                 if signal:
 278                         exit_type = 'signal %d' % signal
 279
 280                 msg = _ ("`%s\' failed (%s)") % (name, exit_type)
 281                 if ignore_error:
 282                         if __main__.verbose_p:
 283                                 warning (msg + ' ' + _ ("(ignored)"))
 284                 else:
 285                         error (msg)
 286                         if not progress_p:
 287                                 error (_ ("The error log is as follows:"))
 288                                 sys.stderr.write (open (error_log (name)).read ())
 289                         exit (status)
 290
 291         progress ('\n')
 292         return status
 293
 294 def cleanup_temp ():
 295         if not __main__.keep_temp_dir_p:
 296                 if __main__.verbose_p:
 297                         progress (_ ("Cleaning %s...") % __main__.temp_dir)
 298                 shutil.rmtree (__main__.temp_dir)
 299                 if __main__.verbose_p:
 300                         progress ('\n')
 301
 302
 303 def strip_extension (f, ext):
 304         (p, e) = os.path.splitext (f)
 305         if e == ext:
 306                 e = ''
 307         return p + e
 308
 309
 310 def cp_to_dir (pattern, dir):
 311         "Copy files matching re PATTERN from cwd to DIR"
 312         # Duh.  Python style portable: cp *.EXT OUTDIR
 313         # system ('cp *.%s %s' % (ext, outdir), 1)
 314         files = filter (lambda x, p=pattern: re.match (p, x), os.listdir ('.'))
 315         map (lambda x, d=dir: shutil.copy2 (x, os.path.join (d, x)), files)
 316
 317
 318 # Python < 1.5.2 compatibility
 319 #
 320 # On most platforms, this is equivalent to
 321 #`normpath(join(os.getcwd()), PATH)'.  *Added in Python version 1.5.2*
 322 if os.path.__dict__.has_key ('abspath'):
 323         abspath = os.path.abspath
 324 else:
 325         def abspath (path):
 326                 return os.path.normpath (os.path.join (os.getcwd (), path))
 327
 328 if os.__dict__.has_key ('makedirs'):
 329         makedirs = os.makedirs
 330 else:
 331         def makedirs (dir, mode=0777):
 332                 system ('mkdir -p %s' % dir)
 333
 334
 335 def mkdir_p (dir, mode=0777):
 336         if not os.path.isdir (dir):
 337                 makedirs (dir, mode)
 338
 339
 340 environment = {}
 341
 342 # tex needs lots of memory, more than it gets by default on Debian
 343 non_path_environment = {
 344         'extra_mem_top' : '1000000',
 345         'extra_mem_bottom' : '1000000',
 346         'pool_size' : '250000',
 347 }
 348
 349 def setup_environment ():
 350         global environment
 351
 352         kpse = read_pipe ('kpsexpand \$TEXMF')
 353         texmf = re.sub ('[ \t\n]+$','', kpse)
 354         type1_paths = read_pipe ('kpsewhich -expand-path=\$T1FONTS')
 355
 356         environment = {
 357                 # TODO: * prevent multiple addition.
 358                 #       * clean TEXINPUTS, MFINPUTS, TFMFONTS,
 359                 #         as these take prevalence over $TEXMF
 360                 #         and thus may break tex run?
 361                 'TEXMF' : "{%s,%s}" % (datadir, texmf) ,
 362                 'GS_FONTPATH' : type1_paths,
 363                 'GS_LIB' : datadir + '/ps',
 364                 }
 365
 366         # $TEXMF is special, previous value is already taken care of
 367         if os.environ.has_key ('TEXMF'):
 368                 del os.environ['TEXMF']
 369
 370         for key in environment.keys ():
 371                 val = environment[key]
 372                 if os.environ.has_key (key):
 373                         val = os.environ[key] + os.pathsep + val
 374                 os.environ[key] = val
 375
 376         for key in non_path_environment.keys ():
 377                 val = non_path_environment[key]
 378                 os.environ[key] = val
 379
 380 def print_environment ():
 381         for (k,v) in os.environ.items ():
 382                 sys.stderr.write ("%s=\"%s\"\n" % (k, v))
 383
 384 def get_bbox (filename):
 385         bbox = filename + '.bbox'
 386         ## -sOutputFile does not work with bbox?
 387         cmd = 'gs -sDEVICE=bbox -q -dNOPAUSE %s -c quit 2>%s' % \
 388               (filename, bbox)
 389         system (cmd, progress_p = 1)
 390         box = open (bbox).read ()
 391         m = re.match ('^%%BoundingBox: ([0-9]+) ([0-9]+) ([0-9]+) ([0-9]+)',
 392                       box)
 393         gr = []
 394         if m:
 395                 gr = map (string.atoi, m.groups ())
 396
 397         return gr
 398
 399 def make_preview (name):
 400         ## ly2dvi/lilypond-book discrepancy
 401         preview_ps = name + '.preview.ps'
 402         if not os.path.isfile (preview_ps):
 403                 preview_ps = name + '.eps'
 404         bbox = get_bbox (preview_ps)
 405         trans_ps = name + '.trans.ps'
 406         png = name + '.png'
 407
 408         margin = 0
 409         fo = open (trans_ps, 'w')
 410         fo.write ('%d %d translate\n' % (-bbox[0] + margin,
 411                                          -bbox[1] + margin))
 412         fo.close ()
 413
 414         x = (2* margin + bbox[2] - bbox[0]) \
 415             * __main__.preview_resolution / 72.0
 416         y = (2* margin + bbox[3] - bbox[1]) \
 417             * __main__.preview_resolution / 72.0
 418         if x == 0:
 419                 x = 1
 420         if y == 0:
 421                 y = 1
 422
 423         cmd = r'''gs -g%dx%d -sDEVICE=pnggray  -dTextAlphaBits=4 -dGraphicsAlphaBits=4  -q -sOutputFile=%s -r%d -dNOPAUSE %s %s -c quit ''' % \
 424               (x, y, png, __main__.preview_resolution, trans_ps, preview_ps)
 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)
 434
 435 def make_page_images (name, resolution = 90):
 436
 437         """ Generate images for
 438         all pages in the PS file NAME. NAME should be the basename
 439         (not including the extension.).
 440         """
 441
 442         cmd = 'gs -sDEVICE=pnggray -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -sOutputFile="%s-page%%d.png" -r%d -dNOPAUSE %s -c quit'
 443         cmd = cmd % (name, resolution, name + '.ps')
 444         system (cmd)