1#!/usr/bin/python
2# -*- coding: utf-8 -*-
3# gperf_unfold_key_conv.py
4# Copyright (c) 2016-2018  K.Kosako
5
6import sys
7import re
8
9REG_LINE_GPERF = re.compile('#line .+gperf"')
10REG_HASH_FUNC = re.compile('hash\s*\(register\s+const\s+char\s*\*\s*str,\s*register\s+size_t\s+len\s*\)')
11REG_STR_AT = re.compile('str\[(\d+)\]')
12REG_UNFOLD_KEY = re.compile('onigenc_unicode_unfold_key\s*\(register\s+const\s+char\s*\*\s*str,\s*register\s+size_t\s+len\)')
13REG_ENTRY = re.compile('\{".+?",\s*/\*(.+?)\*/\s*(-?\d+),\s*(\d)\}')
14REG_EMPTY_ENTRY = re.compile('\{"",\s*(-?\d+),\s*(\d)\}')
15REG_IF_LEN = re.compile('if\s*\(\s*len\s*<=\s*MAX_WORD_LENGTH.+')
16REG_GET_HASH = re.compile('(?:register\s+)?(?:unsigned\s+)?int\s+key\s*=\s*hash\s*\(str,\s*len\);')
17REG_GET_CODE = re.compile('(?:register\s+)?const\s+char\s*\*\s*s\s*=\s*wordlist\[key\]\.name;')
18REG_CODE_CHECK = re.compile('if\s*\(\*str\s*==\s*\*s\s*&&\s*!strncmp.+\)')
19
20def parse_line(s):
21    s = s.rstrip()
22
23    r = re.sub(REG_LINE_GPERF, '', s)
24    if r != s: return r
25    r = re.sub(REG_HASH_FUNC, 'hash(OnigCodePoint codes[])', s)
26    if r != s: return r
27    r = re.sub(REG_STR_AT, 'onig_codes_byte_at(codes, \\1)', s)
28    if r != s: return r
29    r = re.sub(REG_UNFOLD_KEY, 'onigenc_unicode_unfold_key(OnigCodePoint code)', s)
30    if r != s: return r
31    r = re.sub(REG_ENTRY, '{\\1, \\2, \\3}', s)
32    if r != s: return r
33    r = re.sub(REG_EMPTY_ENTRY, '{0xffffffff, \\1, \\2}', s)
34    if r != s: return r
35    r = re.sub(REG_IF_LEN, 'if (0 == 0)', s)
36    if r != s: return r
37    r = re.sub(REG_GET_HASH, 'int key = hash(&code);', s)
38    if r != s: return r
39    r = re.sub(REG_GET_CODE, 'OnigCodePoint gcode = wordlist[key].code;', s)
40    if r != s: return r
41    r = re.sub(REG_CODE_CHECK, 'if (code == gcode && wordlist[key].index >= 0)', s)
42    if r != s: return r
43
44    return s
45
46def parse_file(f):
47    print "/* This file was converted by gperf_unfold_key_conv.py\n      from gperf output file. */"
48
49    line = f.readline()
50    while line:
51        s = parse_line(line)
52        print s
53        line = f.readline()
54
55
56# main
57parse_file(sys.stdin)
58