tools/dev/gen-javahl-errors.py

   1 #!/usr/bin/env python
   2 #
   3 # gen-javahl-errors.py: Generate a Java class containing an enum for the
   4 #                       C error codes
   5 #
   6 # ====================================================================
   7 # Copyright (c) 2007 CollabNet.  All rights reserved.
   8 #
   9 # * This software is licensed as described in the file COPYING, which
  10 # you should have received as part of this distribution.  The terms
  11 # are also available at http://subversion.tigris.org/license-1.html.
  12 # If newer versions of this license are posted there, you may use a
  13 # newer version instead, at your option.
  14 #
  15 # * This software consists of voluntary contributions made by many
  16 # individuals.  For exact contribution history, see the revision
  17 # history and logs, available at http://subversion.tigris.org/.
  18 # ====================================================================
  19 #
  20
  21 import sys, os
  22
  23 try:
  24   from svn import core
  25 except ImportError, e:
  26   print >> sys.stderr, \
  27         "ERROR: Unable to import Subversion's Python bindings: '%s'\n" \
  28         "Hint: Set your PYTHONPATH environment variable, or adjust your " \
  29         "PYTHONSTARTUP\nfile to point to your Subversion install " \
  30         "location's svn-python directory." % e
  31   sys.exit(1)
  32
  33 def get_errors():
  34   errs = {}
  35   for key in vars(core):
  36     if key.find('SVN_ERR_') == 0:
  37       try:
  38         val = int(vars(core)[key])
  39         errs[val] = key
  40       except:
  41         pass
  42   return errs
  43
  44 def gen_javahl_class(error_codes, output_filename):
  45   jfile = open(output_filename, 'w')
  46   jfile.write(
  47 """/** ErrorCodes.java - This file is autogenerated by gen-javahl-errors.py
  48  */
  49
  50 package org.tigris.subversion.javahl;
  51
  52 /**
  53  * Provide mappings from error codes generated by the C runtime to meaningful
  54  * Java values.  For a better description of each error, please see
  55  * svn_error_codes.h in the C source.
  56  */
  57 public class ErrorCodes
  58 {
  59 """)
  60
  61   keys = error_codes.keys()
  62   keys.sort()
  63
  64   for key in keys:
  65     # Format the code name to be more Java-esque
  66     code_name = error_codes[key][8:].replace('_', ' ').title().replace(' ', '')
  67     code_name = code_name[0].lower() + code_name[1:]
  68
  69     jfile.write("    public static final int %s = %d;\n" % (code_name, key))
  70
  71   jfile.write("}\n")
  72   jfile.close()
  73
  74 if __name__ == "__main__":
  75   if len(sys.argv) > 1:
  76     output_filename = sys.argv[1]
  77   else:
  78     output_filename = os.path.join('..', '..', 'subversion', 'bindings',
  79                                    'javahl', 'src', 'org', 'tigris',
  80                                    'subversion', 'javahl', 'ErrorCodes.java')
  81
  82   gen_javahl_class(get_errors(), output_filename)