bes  Updated for version 3.20.10
BESRegex.h
1 
2 // -*- mode: c++; c-basic-offset:4 -*-
3 
4 // This file is part of libdap, A C++ implementation of the OPeNDAP Data
5 // Access Protocol.
6 
7 // Copyright (c) 2005 OPeNDAP, Inc.
8 // Author: James Gallagher <jgallagher@opendap.org>
9 //
10 // This library is free software; you can redistribute it and/or
11 // modify it under the terms of the GNU Lesser General Public
12 // License as published by the Free Software Foundation; either
13 // version 2.1 of the License, or (at your option) any later version.
14 //
15 // This library is distributed in the hope that it will be useful,
16 // but WITHOUT ANY WARRANTY; without even the implied warranty of
17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 // Lesser General Public License for more details.
19 //
20 // You should have received a copy of the GNU Lesser General Public
21 // License along with this library; if not, write to the Free Software
22 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 //
24 // You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
25 
26 #ifndef _Regex_h
27 #define _Regex_h 1
28 
29 #define USE_CPP_11_REGEX 0
30 
31 #if USE_CPP_11_REGEX
32 #include <regex>
33 #else
34 #include <string>
35 #endif
36 
52 class BESRegex
53 {
54 private:
55 #if USE_CPP_11_REGEX
56  std::regex d_exp;
57  std::string d_pattern;
58 
59  void init(const char *s) { d_exp = std::regex(s); }
60  void init(const std::string &s) { d_exp = std::regex(s); } // , std::regex::basic
61 #else
62  // d_preg was a regex_t* but I needed to include both regex.h and config.h
63  // to make the gnulib code work. Because this header is installed (and is
64  // used by other libraries) it cannot include config.h, so I moved the
65  // regex.h and config.h (among other) includes to the implementation. It
66  // would be cleaner to use a special class, but for one field that seems
67  // like overkill.
68  void *d_preg;
69  std::string d_pattern;
70 
71  void init(const char *t);
72  void init(const std::string &s) { init(s.c_str()); d_pattern = s; }
73 #endif
74 
75 public:
77  explicit BESRegex(const char *s) { init(s); }
79  BESRegex(const char *s, int) { init(s); }
81  explicit BESRegex(const std::string &s) { init(s); }
82 
83 #if USE_CPP_11_REGEX
84  ~BESRegex() = default;
85 #else
86  ~BESRegex();
87 #endif
88 
89  std::string pattern() const { return d_pattern; }
90 
92  int match(const char *s, int len, int pos = 0) const;
94  int match(const std::string &s) const;
95 
97  int search(const char *s, int len, int &matchlen, int pos = 0) const ;
99  int search(const std::string &s, int &matchlen) const;
100 };
101 
102 #endif
Regular expression matching.
Definition: BESRegex.h:53
BESRegex(const char *s)
initialize a BESRegex with a C string
Definition: BESRegex.h:77
int match(const char *s, int len, int pos=0) const
Does the pattern match.
Definition: BESRegex.cc:127
BESRegex(const std::string &s)
initialize a BESRegex with a C++ string
Definition: BESRegex.h:81
int search(const char *s, int len, int &matchlen, int pos=0) const
How much of the string does the pattern match.
Definition: BESRegex.cc:192
BESRegex(const char *s, int)
Definition: BESRegex.h:79