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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_PCRE2POSIX
29 #define PCRE2_CODE_UNIT_WIDTH 8
30 #include <pcre2.h>
31 typedef PCRE2_UCHAR8 buftype_t;
32 #else // POSIX regex - not so good...
33 extern "C" { // bug with some libc5 distributions
34 #include <regex.h>
35 typedef char buftype_t;
36 }
37 #endif
38 
39 #include "ustring.h"
40 
41 namespace KJS {
42 
43  class RegExp {
44  public:
45  enum { None = 0, Global = 1, IgnoreCase = 2, Multiline = 4 };
46  RegExp(const UString &p, int f = None);
47  ~RegExp();
48  int flags() const { return flgs; }
49  UString pattern() const { return pat; }
50  bool isValid() const { return valid; }
51  UString match(const UString &s, int i, int *pos = 0, int **ovector = 0);
52  // test is unused. The JS spec says that RegExp.test should use
53  // RegExp.exec, so it has to store $1 etc.
54  // bool test(const UString &s, int i = -1);
55  unsigned int subPatterns() const { return nrSubPatterns; }
56 
57  //These methods should be called around the match of the same string..
58  void prepareMatch(const UString &s);
59  void doneMatch();
60  private:
61  const UString pat;
62  int flgs : 8;
63  bool m_notEmpty;
64  bool valid;
65 
66  // Cached encoding info...
67  buftype_t *buffer;
68  int* originalPos;
69  int bufferSize;
70 
71  void prepareUtf8 (const UString& s);
72  void prepareASCII (const UString& s);
73 #ifndef NDEBUG
74  UString originalS; // the original string, used for sanity-checking
75 #endif
76 
77 #ifndef HAVE_PCRE2POSIX
78  regex_t preg;
79 #else
80  pcre2_code *pcregex;
81  pcre2_match_data *match_data;
82 
83  enum UTF8SupportState {
84  Unknown,
85  Supported,
86  Unsupported
87  };
88  static UTF8SupportState utf8Support;
89 #endif
90  uint32_t nrSubPatterns;
91 
92  RegExp();
93  };
94 
95 } // namespace
96 
97 #endif

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