buildMain.py

   1 #!/usr/bin/env python
   2
   3 import sys, os.path, re, imp, py_compile
   4
   5 if len(sys.argv) < 3:
   6     print "Usage: <out-file> <main-file> [<modules>...]"
   7     sys.exit(1)
   8
   9 outFile = sys.argv[1]
  10 mainFile = sys.argv[2]
  11 moduleFiles = sys.argv[3:]
  12
  13 preamble = """#!/usr/bin/env python
  14
  15 import tempfile, sys, imp, __builtin__
  16
  17 modules = {}
  18
  19 class Module:
  20     pass
  21
  22 def addModule(name, contents, descr):
  23     m = Module()
  24     m.descr = descr
  25     m.contents = contents
  26     modules[name] = m
  27
  28 origImport = __import__
  29 def MyImport(name, globals=None, locals=None, fromlist=None):
  30     try:
  31         return sys.modules[name]
  32     except KeyError:
  33         pass
  34
  35     if modules.has_key(name):
  36         f = tempfile.TemporaryFile()
  37         f.write(modules[name].contents)
  38         f.seek(0)
  39         ret = imp.load_module(name, f, '', modules[name].descr)
  40         f.close()
  41         return ret
  42     else:
  43         return origImport(name, globals, locals, fromlist)
  44
  45 __builtin__.__import__ = MyImport
  46 """
  47
  48 def findDescr(suffix):
  49     for x in imp.get_suffixes():
  50         if x[0] == '.' + suffix:
  51             return x
  52
  53 fout = open(outFile, 'w')
  54 fout.write(preamble)
  55 REFile = re.compile('^(.*)\\.(.*?)$')
  56
  57 for f in moduleFiles + [mainFile]:
  58     py_compile.compile(f)
  59     fin = open(f + 'c', 'r')
  60     name = os.path.basename(f)
  61     m = REFile.match(name)
  62     fout.write('addModule(' + repr(m.group(1)) + ', ' + repr(fin.read()) + ', ' + repr(findDescr('pyc')) + ')\n')
  63
  64 m = REFile.match(mainFile)
  65 fout.write('import ' + m.group(1) + '\n')
  66 fout.close()