filter_h.py revision 440cde68
1#!/usr/bin/env python
2# Copyright (c) 2016 Comcast Cable Communications Management, LLC.
3#
4# Licensed under the Apache License, Version 2.0 (the "License");
5# you may not use this file except in compliance with the License.
6# You may obtain a copy of the License at:
7#
8#     http://www.apache.org/licenses/LICENSE-2.0
9#
10# Unless required by applicable law or agreed to in writing, software
11# distributed under the License is distributed on an "AS IS" BASIS,
12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13# See the License for the specific language governing permissions and
14# limitations under the License.
15
16# Filter for .c files to make various preprocessor tricks Doxygenish
17
18import os, sys, re
19
20if len(sys.argv) < 2:
21    sys.stderr.write("Usage: %s <filename>\n" % (sys.argv[0]))
22    sys.exit(1)
23
24replace_patterns = [
25    # Search for CLIB_PAD_FROM_TO(...); and replace with padding
26    # #define CLIB_PAD_FROM_TO(from,to) u8 pad_##from[(to) - (from)]
27    ( re.compile("(?P<m>CLIB_PAD_FROM_TO)\s*[(](?P<from>[^,]+),\s*(?P<to>[^)]+)[)]"),
28        r"/** Padding. */ u8 pad_\g<from>[(\g<to>) - (\g<from>)]" ),
29
30]
31
32
33filename = sys.argv[1]
34cwd = os.getcwd()
35if filename[0:len(cwd)] == cwd:
36    filename = filename[len(cwd):]
37    if filename[0] == "/":
38        filename = filename[1:]
39
40with open(filename) as fd:
41    line_num = 0
42
43    for line in fd:
44        line_num += 1
45        str = line[:-1] # filter \n
46
47        # Look for search/replace patterns
48        for p in replace_patterns:
49            str = p[0].sub(p[1], str)
50
51        sys.stdout.write(str+"\n")
52
53# All done
54