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regexp.h
1/*
2 * This file is part of the KDE libraries
3 * Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 *
19 */
20
21#ifndef _KJS_REGEXP_H_
22#define _KJS_REGEXP_H_
23
24#include <sys/types.h>
25
26#include "config.h"
27
28#ifdef HAVE_PCREPOSIX
29#include <pcre.h>
30#else // POSIX regex - not so good...
31extern "C" { // bug with some libc5 distributions
32#include <regex.h>
33}
34#endif //HAVE_PCREPOSIX
35
36#include "ustring.h"
37
38namespace KJS {
39
40 class RegExp {
41 public:
42 enum { None = 0, Global = 1, IgnoreCase = 2, Multiline = 4 };
43 RegExp(const UString &p, int f = None);
44 ~RegExp();
45 int flags() const { return flgs; }
46 UString pattern() const { return pat; }
47 bool isValid() const { return valid; }
48 UString match(const UString &s, int i, int *pos = 0, int **ovector = 0);
49 // test is unused. The JS spec says that RegExp.test should use
50 // RegExp.exec, so it has to store $1 etc.
51 // bool test(const UString &s, int i = -1);
52 unsigned int subPatterns() const { return nrSubPatterns; }
53
54 //These methods should be called around the match of the same string..
55 void prepareMatch(const UString &s);
56 void doneMatch();
57 private:
58 const UString pat;
59 int flgs : 8;
60 bool m_notEmpty;
61 bool valid;
62
63 // Cached encoding info...
64 char* buffer;
65 int* originalPos;
66 int bufferSize;
67
68 void prepareUtf8 (const UString& s);
69 void prepareASCII (const UString& s);
70#ifndef NDEBUG
71 UString originalS; // the original string, used for sanity-checking
72#endif
73
74#ifndef HAVE_PCREPOSIX
75 regex_t preg;
76#else
77 pcre *pcregex;
78
79 enum UTF8SupportState {
80 Unknown,
81 Supported,
82 Unsupported
83 };
84
85#ifdef PCRE_CONFIG_UTF8
86 static UTF8SupportState utf8Support;
87#endif
88#endif
89 unsigned int nrSubPatterns;
90
91 RegExp();
92 };
93
94} // namespace
95
96#endif

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