build/generator/swig/external_runtime.py

   1 #!/usr/bin/env python
   2
   3 #
   4 # external_runtime.py: Generate external runtime files for SWIG
   5 #
   6
   7 import sys, os, re, fileinput
   8 if __name__ == "__main__":
   9   parent_dir = os.path.dirname(os.path.abspath(os.path.dirname(sys.argv[0])))
  10   sys.path[0:0] = [ parent_dir, os.path.dirname(parent_dir) ]
  11 import generator.swig
  12 import generator.util.executable
  13 _exec = generator.util.executable
  14
  15 class Generator(generator.swig.Generator):
  16   """Generate external runtime files for SWIG"""
  17
  18   def write(self):
  19     """Generate external runtimes"""
  20     for lang in self.langs:
  21       self.write_external_runtime(lang)
  22
  23   def write_makefile_rules(self, makefile):
  24     """Write the makefile rules for generating external runtimes"""
  25     makefile.write(
  26       'GEN_SWIG_RUNTIME = cd $(top_srcdir) && $(PYTHON)' +
  27       ' build/generator/swig/external_runtime.py build.conf $(SWIG)\n\n'
  28     )
  29     for lang in self.langs:
  30       out = self._output_file(lang)
  31       makefile.write(
  32         'autogen-swig-%s: %s\n' % (self.short[lang], out) +
  33         '%s: $(SWIG_CHECKOUT_FILES)\n' % out +
  34         '\t$(GEN_SWIG_RUNTIME) %s\n\n' % lang
  35       )
  36     makefile.write('\n')
  37
  38   def write_external_runtime(self, lang):
  39     """Generate external runtime header files for each SWIG language"""
  40
  41     # Runtime library names
  42     runtime_library = {
  43       "python": "pyrun.swg", "perl":"perlrun.swg", "ruby":"rubydef.swg"
  44     }
  45
  46     # Build runtime files
  47     out = self._output_file(lang)
  48     if self.version() == 103024:
  49       out_file = open(out, "w")
  50       out_file.write(open("%s/swigrun.swg" % self.proxy_dir).read())
  51       out_file.write(open("%s/common.swg" % self.proxy_dir).read())
  52       out_file.write(
  53         open("%s/%s" % (self.proxy_dir, runtime_library[lang])).read())
  54       if lang != "ruby":
  55         out_file.write(open("%s/runtime.swg" % self.proxy_dir).read())
  56       out_file.close()
  57     else:
  58       _exec.run("%s -%s -external-runtime %s" % (self.swig_path, lang, out))
  59
  60     # SWIG 1.3.24-27 should include rubyhead.swg in their
  61     # external runtime, but they don't.
  62     if lang == "ruby" and self.version() < 103028:
  63       runtime = open(out).read()
  64       out_file = open(out, "w")
  65       head = open("%s/rubyhead.swg" % self.proxy_dir).read();
  66       out_file.write(head)
  67       if self.version() >= 103026:
  68         # SWIG 1.3.26-27 should include rubytracking.swg in their
  69         # external runtime, but they don't.
  70         tracking = open("%s/rubytracking.swg" % self.proxy_dir).read();
  71         out_file.write(tracking)
  72       out_file.write(runtime)
  73       out_file.close()
  74
  75     # SWIG 1.3.25 and earlier use the wrong number of arguments in calls to
  76     # SWIG_GetModule. We fix this below.
  77     if self.version() <= 103025:
  78       for line in fileinput.input(out, inplace=1):
  79         sys.stdout.write(
  80           re.sub(r"SWIG_GetModule\(\)", "SWIG_GetModule(NULL)", line)
  81         )
  82   def _output_file(self, lang):
  83     """Return the output filename of the runtime for the given language"""
  84     return '%s/swig_%s_external_runtime.swg' % (self.proxy_dir, lang)
  85
  86
  87 if __name__ == "__main__":
  88   if len(sys.argv) != 4:
  89     print "Usage: %s build.conf swig"
  90     print "Generates external runtime files for SWIG"
  91   else:
  92     gen = Generator(sys.argv[1], sys.argv[2])
  93     gen.write_external_runtime(sys.argv[3])