#!/usr/bin/env python

#

# gen_def.py :  Generate the .DEF file for Windows builds

#

# ===================================================================

#   Licensed to the Apache Software Foundation (ASF) under one

#   or more contributor license agreements.  See the NOTICE file

#   distributed with this work for additional information

#   regarding copyright ownership.  The ASF licenses this file

#   to you under the Apache License, Version 2.0 (the

#   "License"); you may not use this file except in compliance

#   with the License.  You may obtain a copy of the License at

# 

#     http://www.apache.org/licenses/LICENSE-2.0

# 

#   Unless required by applicable law or agreed to in writing,

#   software distributed under the License is distributed on an

#   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

#   KIND, either express or implied.  See the License for the

#   specific language governing permissions and limitations

#   under the License.

# ===================================================================

#

# Typically, this script is used like:

#

#    C:\PATH> python build/gen_def.py serf.h serf_bucket_types.h serf_bucket_util.h > build/serf.def

#

import re

import sys

# This regex parses function declarations that look like:

#

#    return_type serf_func1(...

#    return_type *serf_func2(...

#

# Where return_type is a combination of words and "*" each separated by a

# SINGLE space. If the function returns a pointer type (like serf_func2),

# then a space may exist between the "*" and the function name. Thus,

# a more complicated example might be:

#    const type * const * serf_func3(...

#

_funcs = re.compile(r'^(?:(?:\w+|\*) )+\*?(serf_[a-z][a-zA-Z_0-9]*)\(',

                    re.MULTILINE)

# This regex parses the bucket type definitions which look like:

#

#    extern const serf_bucket_type_t serf_bucket_type_FOO;

#

_types = re.compile(r'^extern const serf_bucket_type_t (serf_[a-z_]*);',

                    re.MULTILINE)

def extract_exports(fname):

  content = open(fname).read()

  exports = [ ]

  for name in _funcs.findall(content):

    exports.append(name)

  for name in _types.findall(content):

    exports.append(name)

  return exports

# Blacklist the serf v2 API for now

blacklist = ['serf_connection_switch_protocol',

             'serf_http_protocol_create',

             'serf_http_request_create',

             'serf_https_protocol_create']

if __name__ == '__main__':

  # run the extraction over each file mentioned

  import sys

  print("EXPORTS")

  for fname in sys.argv[1:]:

    funclist = extract_exports(fname)

    funclist = set(funclist) - set(blacklist)

    for func in funclist:

      print(func)