wxPython/distrib/build_renamers.py

   1 #!/usr/bin/env python
   2 #---------------------------------------------------------------------------
   3 """
   4 Usage:  build_renamers.py destdir modulename filename.xml
   5
   6 Scans the XML file produced by SWIG (see setup.py) and generate the
   7 %rename directives needed to implement the new wx namespace.  The
   8 rename directives are output in a file named _modulename_rename.i in
   9 the destdir given.
  10
  11 Also output a reverse 'renamer' Python module located in
  12 wxPython/filename.py (relative the the current dir) to make a
  13 backwards compatibility interface for the old wxPython packages.
  14 """
  15
  16 import sys, os, tempfile, pprint
  17 import xml.sax
  18 from distutils.spawn import spawn
  19
  20 try:
  21     import libxml2
  22     USE_LIBXML2 = True
  23 except ImportError:
  24     USE_LIBXML2 = False
  25
  26 wxPythonDir = "wxPython"
  27
  28 #---------------------------------------------------------------------------
  29
  30
  31 renamerTemplateStart = """\
  32 // A bunch of %%rename directives generated by %s
  33 // in order to remove the wx prefix from all global scope names.
  34
  35 #ifndef BUILDING_RENAMERS
  36
  37 """
  38
  39 renamerTemplateEnd = """
  40 #endif
  41 """
  42
  43 wxPythonTemplateStart = """\
  44 ## This file reverse renames symbols in the wx package to give
  45 ## them their wx prefix again, for backwards compatibility.
  46 ##
  47 ## Generated by %s
  48
  49 # This silly stuff here is so the wxPython.wx module doesn't conflict
  50 # with the wx package.  We need to import modules from the wx package
  51 # here, then we'll put the wxPython.wx entry back in sys.modules.
  52 import sys
  53 _wx = None
  54 if sys.modules.has_key('wxPython.wx'):
  55     _wx = sys.modules['wxPython.wx']
  56     del sys.modules['wxPython.wx']
  57
  58 import wx.%s
  59
  60 sys.modules['wxPython.wx'] = _wx
  61 del sys, _wx
  62
  63
  64 # Now assign all the reverse-renamed names:
  65 """
  66
  67 wxPythonTemplateEnd = """
  68
  69 """
  70
  71
  72
  73 #---------------------------------------------------------------------------
  74
  75 def main(args):
  76     # check args
  77     if len(args) < 3:
  78         print __doc__
  79         sys.exit(1)
  80
  81     # check location (there should be a wxPython subdir)
  82     if not os.path.exists(wxPythonDir) or not os.path.isdir(wxPythonDir):
  83         print __doc__
  84         print "You should only run this script from the main wxPython source dir.\n"
  85         sys.exit(1)
  86
  87
  88     destdir = args[0]
  89     modname = args[1]
  90     xmlfile = args[2]
  91
  92     swigDest = os.path.join(destdir, "_"+modname+"_rename.i")
  93     pyDest = os.path.join(wxPythonDir, modname + '.py')
  94
  95     swigDestTemp = tempfile.mktemp('.tmp')
  96     swigFile = open(swigDestTemp, "w")
  97     swigFile.write(renamerTemplateStart % sys.argv[0])
  98
  99     pyDestTemp = tempfile.mktemp('.tmp')
 100     pyFile = open(pyDestTemp, "w")
 101     pyFile.write(wxPythonTemplateStart % (sys.argv[0], modname))
 102
 103     try:
 104         print "Parsing and building renamers",
 105         if USE_LIBXML2:
 106             processXML(xmlfile, modname, swigFile, pyFile)
 107         else:
 108             print "using xml.sax..."
 109             xml.sax.parse(xmlfile, ContentHandler(modname, swigFile, pyFile))
 110
 111     finally:
 112
 113         checkOtherNames(pyFile, modname,
 114                         os.path.join(destdir, '_'+modname+'_reverse.txt'))
 115         pyFile.write(wxPythonTemplateEnd)
 116         pyFile.close()
 117
 118         swigFile.write(renamerTemplateEnd)
 119         swigFile.close()
 120
 121         # Compare the files just created with the existing one and
 122         # blow away the old one if they are different.
 123         for dest, temp in [(swigDest, swigDestTemp),
 124                            (pyDest, pyDestTemp)]:
 125             if open(dest).read() != open(temp).read():
 126                 os.unlink(dest)
 127                 os.rename(temp, dest)
 128             else:
 129                 print dest + " not changed."
 130                 os.unlink(temp)
 131
 132 #---------------------------------------------------------------------------
 133
 134
 135 def GetAttr(node, name):
 136     path = "./attributelist/attribute[@name='%s']/@value" % name
 137     n = node.xpathEval2(path)
 138     if len(n):
 139         return n[0].content
 140     else:
 141         return None
 142
 143
 144 def processXML(xmlfile, modname, swigFile, pyFile):
 145     import libxml2
 146     print "using libxml2..."
 147
 148     topnode = libxml2.parseFile(xmlfile).children
 149
 150     # remove any import nodes as we don't need to do renamers for symbols found therein
 151     imports = topnode.xpathEval2("*/import")
 152     for n in imports:
 153         n.unlinkNode()
 154         n.freeNode()
 155
 156     # do a depth first iteration over what's left
 157     for node in topnode:
 158         doRename = False
 159         doPtr = False
 160         addWX = False
 161         revOnly = False
 162
 163
 164         if node.name == "class":
 165             lastClassName = name = GetAttr(node, "name")
 166             lastClassSymName = sym_name = GetAttr(node, "sym_name")
 167             doRename = True
 168             doPtr = True
 169             if sym_name != name:
 170                 name = sym_name
 171                 addWX = True
 172
 173         # renamed constructors
 174         elif node.name == "constructor":
 175             name     = GetAttr(node, "name")
 176             sym_name = GetAttr(node, "sym_name")
 177             if sym_name != name:
 178                 name = sym_name
 179                 addWX = True
 180                 doRename = True
 181
 182         # only enumitems at the top level
 183         elif node.name == "enumitem" and node.parent.parent.name == "include":
 184             name     = GetAttr(node, "name")
 185             sym_name = GetAttr(node, "sym_name")
 186             doRename = True
 187
 188
 189         elif node.name in ["cdecl", "constant"]:
 190             name      = GetAttr(node, "name")
 191             sym_name  = GetAttr(node, "sym_name")
 192             toplevel  = node.parent.name == "include"
 193
 194             # top-level functions
 195             if toplevel and GetAttr(node, "view") == "globalfunctionHandler":
 196                 doRename = True
 197
 198             # top-level global vars
 199             elif toplevel and GetAttr(node, "feature_immutable") == "1":
 200                 doRename = True
 201
 202             # static methods
 203             elif GetAttr(node, "view") == "staticmemberfunctionHandler":
 204                 name     = lastClassName + '_' + name
 205                 sym_name = lastClassSymName + '_' + sym_name
 206                 # only output the reverse renamer in this case
 207                 doRename = revOnly = True
 208
 209             if doRename and name != sym_name:
 210                 name = sym_name
 211                 addWX = True
 212
 213
 214         if doRename:
 215             old = new = name
 216             if old.startswith('wx') and not old.startswith('wxEVT_'):
 217                 # remove all wx prefixes except wxEVT_ and write a %rename directive for it
 218                 new = old[2:]
 219                 if not revOnly:
 220                     swigFile.write("%%rename(%s)  %35s;\n" % (new, old))
 221
 222             # Write assignments to import into the old wxPython namespace
 223             if addWX and not old.startswith('wx'):
 224                 old = 'wx'+old
 225             pyFile.write("%s = wx.%s.%s\n" % (old, modname, new))
 226             if doPtr:
 227                 pyFile.write("%sPtr = wx.%s.%sPtr\n" % (old, modname, new))
 228
 229
 230 #---------------------------------------------------------------------------
 231
 232 def checkOtherNames(pyFile, moduleName, filename):
 233     if os.path.exists(filename):
 234         prefixes = []
 235         for line in file(filename):
 236             if line.endswith('\n'):
 237                 line = line[:-1]
 238             if line and not line.startswith('#'):
 239                 if line.endswith('*'):
 240                     prefixes.append(line[:-1])
 241                 elif line.find('=') != -1:
 242                     pyFile.write("%s\n" % line)
 243                 else:
 244                     wxname = 'wx' + line
 245                     if line.startswith('wx') or line.startswith('WX') or line.startswith('EVT'):
 246                         wxname = line
 247                     pyFile.write("%s = wx.%s.%s\n" % (wxname, moduleName, line))
 248
 249         if prefixes:
 250             pyFile.write(
 251                 "\n\nd = globals()\nfor k, v in wx.%s.__dict__.iteritems():"
 252                 % moduleName)
 253             first = True
 254             for p in prefixes:
 255                 if first:
 256                     pyFile.write("\n    if ")
 257                     first = False
 258                 else:
 259                     pyFile.write("\n    elif ")
 260                 pyFile.write("k.startswith('%s'):\n        d[k] = v" % p)
 261             pyFile.write("\ndel d, k, v\n\n")
 262
 263
 264 #---------------------------------------------------------------------------
 265
 266 interestingTypes = [ 'class', 'cdecl', 'enumitem', 'constructor', 'constant' ]
 267 interestingAttrs = [ 'name', 'sym_name', 'decl', 'feature_immutable', 'module',
 268                      'storage', 'type' ]
 269
 270
 271 class Element:
 272     def __init__(self, tagtype):
 273         self.tagtype   = tagtype
 274         self.level     = -1
 275         self.name      = None
 276         self.sym_name  = None
 277         self.decl      = None
 278         self.immutable = None
 279         self.klass     = None
 280         self.module    = None
 281         self.storage   = None
 282         self.type      = None
 283         self.startLine = -1
 284
 285
 286     def write(self, moduleName, swigFile, pyFile):
 287         doRename = False
 288         doPtr = False
 289         addWX = False
 290         revOnly = False
 291
 292         #if self.name.find('DefaultPosition') != -1:
 293         #    pprint.pprint(self.__dict__)
 294
 295         if self.tagtype in  ['cdecl', 'constant']:
 296             if self.storage == 'typedef':
 297                 pass
 298
 299             # top level functions
 300             elif self.level == 0 and self.decl != "":
 301                 doRename = True
 302
 303             # top level global vars
 304             elif self.level == 0 and self.immutable == '1':
 305                 doRename = True
 306
 307             # static methods
 308             elif self.storage == 'static':
 309                 if not self.klass:
 310                     pprint.pprint(self.__dict__)
 311                 else:
 312                     self.name     = self.klass + '_' + self.name
 313                     self.sym_name = self.sym_klass + '_' + self.sym_name
 314                     # only output the reverse renamer in this case
 315                     doRename = revOnly = True
 316
 317
 318
 319             if doRename and self.name != self.sym_name:
 320                 #print "%-25s %-25s" % (self.name, self.sym_name)
 321                 self.name = self.sym_name
 322                 addWX = True
 323
 324
 325         elif self.tagtype == 'class' and self.module == moduleName:
 326             doRename = True
 327             doPtr = True
 328             if self.sym_name != self.klass:
 329                 #print self.sym_name
 330                 self.name = self.sym_name
 331                 addWX = True
 332
 333         elif self.tagtype == 'constructor':
 334             #print "%-25s  %-25s" % (self.name, self.sym_name)
 335             if self.sym_name != self.klass:
 336                 #print self.sym_name
 337                 self.name = self.sym_name
 338                 addWX = True
 339                 doRename = True
 340
 341         elif self.tagtype == 'enumitem' and self.level == 0:
 342             doRename = True
 343
 344
 345         if doRename:
 346             #print "%-25s %-25s" % (self.name, self.sym_name)
 347             old = new = self.name
 348             if old.startswith('wx') and not old.startswith('wxEVT_'):
 349                 # remove all wx prefixes except wxEVT_ and write a %rename directive for it
 350                 new = old[2:]
 351                 if not revOnly:
 352                     swigFile.write("%%rename(%s)  %35s;\n" % (new, old))
 353
 354             # Write assignments to import into the old wxPython namespace
 355             if addWX and not old.startswith('wx'):
 356                 old = 'wx'+old
 357             pyFile.write("%s = wx.%s.%s\n" % (old, moduleName, new))
 358             if doPtr:
 359                 pyFile.write("%sPtr = wx.%s.%sPtr\n" % (old, moduleName, new))
 360
 361
 362
 363         #else:
 364         #    text = "%07d  %d  %10s  %-35s %s\n" % (
 365         #        self.startLine, self.level, self.tagtype, self.name, self.decl)
 366         #    #rejects.write(text)
 367         #    print text,
 368
 369
 370 #---------------------------------------------------------------------------
 371
 372 class ContentHandler(xml.sax.ContentHandler):
 373     def __init__(self, modname, swigFile, pyFile):
 374         xml.sax.ContentHandler.__init__(self)
 375         self.modname = modname
 376         self.swigFile = swigFile
 377         self.pyFile   = pyFile
 378         self.elements = []
 379         self.imports  = 0
 380         self.klass = None
 381         self.sym_klass = None
 382
 383
 384     def setDocumentLocator(self, locator):
 385         self.locator = locator
 386
 387
 388
 389     def startElement(self, name, attrs):
 390         if name in interestingTypes:
 391             # start of a new element that we are interested in
 392             ce = Element(name)
 393             ce.startLine = self.locator.getLineNumber()
 394             ce.level = len(self.elements)
 395             if name == 'constructor':
 396                 ce.klass = self.elements[0].name
 397             else:
 398                 ce.klass = self.klass
 399                 ce.sym_klass = self.sym_klass
 400             self.elements.insert(0, ce)
 401
 402
 403         elif len(self.elements) and name == 'attribute' and attrs['name'] in interestingAttrs:
 404             attrName = attrs['name']
 405             attrVal  = attrs['value']
 406             if attrName.startswith('feature_'):
 407                 attrName = attrName.replace('feature_', '')
 408             ce = self.elements[0]
 409             if getattr(ce, attrName) is None:
 410                 setattr(ce, attrName, attrVal)
 411             if ce.tagtype == 'class' and attrName == 'name' and self.klass is None:
 412                 self.klass = attrVal
 413             if ce.tagtype == 'class' and attrName == 'sym_name' and self.sym_klass is None:
 414                 self.sym_klass = attrVal
 415
 416
 417 ##         elif len(self.elements) and name == 'attribute' and attrs['name'] == 'name':
 418 ##             # save the elements name
 419 ##             ce = self.elements[0]
 420 ##             if ce.name is None:
 421 ##                 ce.name = attrs['value']
 422 ##                 ce.nameLine = self.locator.getLineNumber()
 423
 424 ##         elif len(self.elements) and name == 'attribute' and attrs['name'] == 'sym_name':
 425 ##             # save the elements name
 426 ##             ce = self.elements[0]
 427 ##             if ce.sym_name is None:
 428 ##                 ce.sym_name = attrs['value']
 429
 430 ##         elif len(self.elements) and name == 'attribute' and attrs['name'] == 'decl':
 431 ##             # save the elements decl
 432 ##             ce = self.elements[0]
 433 ##             ce.decl = attrs['value']
 434
 435 ##         elif len(self.elements) and name == 'attribute' and attrs['name'] == 'feature_immutable':
 436 ##             # save the elements decl
 437 ##             ce = self.elements[0]
 438 ##             ce.immutable = int(attrs['value'])
 439
 440 ##         elif len(self.elements) and name == 'attribute' and attrs['name'] == 'module':
 441 ##             # save the elements decl
 442 ##             ce = self.elements[0]
 443 ##             ce.module = attrs['value']
 444
 445         elif name == 'import':
 446             self.imports += 1
 447
 448 ##         elif len(self.elements) and name == 'attribute' and attrs['name'] == 'storage':
 449 ##             # save the elements decl
 450 ##             ce = self.elements[0]
 451 ##             ce.storage = attrs['value']
 452
 453 ##         elif len(self.elements) and name == 'attribute' and attrs['name'] == 'type':
 454 ##             # save the elements decl
 455 ##             ce = self.elements[0]
 456 ##             ce.type = attrs['value']
 457
 458
 459     def endElement(self, name):
 460         if name in interestingTypes:
 461             # end of an element that we are interested in
 462             ce = self.elements.pop(0)
 463
 464             if self.imports == 0:
 465                 # only write for items that are in this file, not imported
 466                 ce.write(self.modname, self.swigFile, self.pyFile)
 467
 468         if name == 'import':
 469             self.imports -= 1
 470
 471         if name == 'class':
 472             self.klass = None
 473             self.sym_klass = None
 474
 475
 476 #---------------------------------------------------------------------------
 477
 478 if __name__ == "__main__":
 479     main(sys.argv[1:])
 480