bes Updated for version 3.20.13
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
53{
54private:
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
75public:
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