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#!/usr/bin/env python3
#
# Copyright 2021, João Valverde <j@v6e.pt>
#
# Wireshark - Network traffic analyzer
# By Gerald Combs <gerald@wireshark.org>
# Copyright 1998 Gerald Combs
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
#
# Uses pyclibrary to parse C headers for enums and integer macro
# definitions. Exports that data to a C file for the introspection API.
#
# Requires: https://github.com/MatthieuDartiailh/pyclibrary
#
import os
import sys
from pyclibrary import CParser
def parse_files(infiles, outfile):
print("Input: {}".format(infiles))
print("Output: '{}'".format(outfile))
pre_line_count = 0
with open(outfile, 'r') as out_f:
pre_line_count = len(out_f.read().splitlines())
parser = CParser(infiles)
source = """\
/*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*
* Generated automatically from %s. It can be re-created by running
* "tools/make-enums.py" from the top source directory.
*
* It is fine to edit this file by hand. Particularly if a symbol
* disappears from the API it can just be removed here. There is no
* requirement to re-run the generator script.
*
*/
""" % (os.path.basename(sys.argv[0]))
for f in infiles:
source += '#include <{}>\n'.format(f)
source += """
#define ENUM(arg) { #arg, arg }
static ws_enum_t const all_enums[] = {
"""
definitions = parser.defs['values']
symbols = list(definitions.keys())
symbols.sort()
for s in symbols:
if isinstance(definitions[s], int):
source += ' ENUM({}),\n'.format(s)
source += """\
{ NULL, 0 },
};
"""
post_line_count = len(source.splitlines())
if post_line_count < pre_line_count:
sys.stderr.write(f"Can't shrink {outfile} from {pre_line_count} lines to {post_line_count} lines.\n")
sys.exit(1)
try:
fh = open(outfile, 'w')
except OSError:
sys.exit('Unable to write ' + outfile + '.\n')
fh.write(source)
fh.close()
epan_files = [
"epan/address.h",
"epan/ipproto.h",
"epan/ftypes/ftypes.h",
"epan/proto.h", # PyClibrary 0.3.0 needs this after ftypes.h
"epan/stat_groups.h",
]
parse_files(epan_files, "epan/introspection-enums.c")
wtap_files = [
"wiretap/wtap.h",
]
parse_files(wtap_files, "wiretap/introspection-enums.c")
#
# Editor modelines - https://www.wireshark.org/tools/modelines.html
#
# Local variables:
# c-basic-offset: 4
# indent-tabs-mode: nil
# End:
#
# vi: set shiftwidth=4 expandtab:
# :indentSize=4:noTabs=true:
#
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