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1// RegExp.cc for Fluxbox Window Manager
2// Copyright (c) 2003 Henrik Kinnunen (fluxgen at users.sourceforge.net)
3// and Simon Bowden (rathnor at users.sourceforge.net)
4//
5// Permission is hereby granted, free of charge, to any person obtaining a
6// copy of this software and associated documentation files (the "Software"),
7// to deal in the Software without restriction, including without limitation
8// the rights to use, copy, modify, merge, publish, distribute, sublicense,
9// and/or sell copies of the Software, and to permit persons to whom the
10// Software is furnished to do so, subject to the following conditions:
11//
12// The above copyright notice and this permission notice shall be included in
13// all copies or substantial portions of the Software.
14//
15// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21// DEALINGS IN THE SOFTWARE.
22
23// $Id: RegExp.cc,v 1.1 2003/06/12 15:12:19 rathnor Exp $
24
25#include "RegExp.hh"
26
27//use GNU extensions
28#ifndef _GNU_SOURCE
29#define _GNU_SOURCE
30#endif // _GNU_SOURCE
31
32#include <string>
33#include <iostream>
34
35using namespace std;
36
37
38/********************************************************
39 * RegExp *
40 ***********/
41
42// full_match is to say if we match on this regexp using the full string
43// or just a substring. Substrings aren't supported if not HAVE_REGEXP
44RegExp::RegExp(const std::string &str, bool full_match):
45#ifdef USE_REGEXP
46m_regex(0) {
47 string match;
48 if (full_match) {
49 match = "^";
50 match.append(str);
51 match.append("$");
52 } else {
53 match = str;
54 }
55
56 m_regex = new regex_t;
57 int ret = regcomp(m_regex, match.c_str(), REG_NOSUB | REG_EXTENDED);
58 if (ret != 0) {
59 char *errstr = 0;
60 // gives us the length of the string
61 unsigned int size = regerror(ret, m_regex, errstr, 0);
62 errstr = new char[size];
63
64 regerror(ret, m_regex, errstr, size);
65 cerr<<"Error parsing regular expression: "<<errstr<<endl;
66 delete [] errstr;
67 delete m_regex; // I don't think I regfree a failed compile?
68 m_regex = 0;
69 }
70}
71#else // notdef USE_REGEXP
72m_str(str) {}
73#endif // USE_REGEXP
74
75RegExp::~RegExp() {
76#ifdef USE_REGEXP
77 if (m_regex != 0) {
78 regfree(m_regex);
79 delete m_regex;
80 }
81#endif // USE_REGEXP
82}
83
84bool RegExp::match(const std::string &str) {
85#ifdef USE_REGEXP
86 if (m_regex)
87 return (regexec(m_regex, str.c_str(), 0, 0, 0) == 0);
88 else
89 return false;
90#else // notdef USE_REGEXP
91 return (m_str == str);
92#endif // USE_REGEXP
93}
94