blob: 96495a60fedc119dfa53f90c4d680a880bfeb3a7 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
/*****************************************************************************
* Copyright (c) 2013 CEA LIST.
*
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* CEA LIST - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.views.search.regex;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
/**
*
* Singleton helper class used to find pattern queries in strings
*
*/
public class PatternHelper {
private static PatternHelper instance = null;
private PatternHelper() {
super();
}
/**
* Singleton
*
* @return the helper
*/
public final static PatternHelper getInstance() {
synchronized(PatternHelper.class) {
if(PatternHelper.instance == null) {
PatternHelper.instance = new PatternHelper();
}
}
return PatternHelper.instance;
}
/**
* Create a pattern
*
* @param query
* the query text
* @param isCaseSensitive
* if it is a case sensitive pattern
* @param isRegularExpression
* if it i a regular expression pattern
* @return
* the pattern corresponding to the query text and the parameters
* @throws PatternSyntaxException
*/
public Pattern createPattern(String query, boolean isCaseSensitive, boolean isRegularExpression) throws PatternSyntaxException {
int options = Pattern.MULTILINE;
if(!isRegularExpression) {
// query = ".*" + Pattern.quote(query); //$NON-NLS-1$
query = Pattern.quote(query); //$NON-NLS-1$
}
if(!isCaseSensitive) {
options |= Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE;
}
Pattern pattern = Pattern.compile(query, options);
return pattern;
}
// /**
// * Check whether a string matches a certain pattern in a matcher
// *
// * @param m
// * the matcher
// * @param isRegularExpression
// * specify if it is a regular expression pattern
// * @return
// * true if the text matches the pattern, else false
// */
// public boolean evaluate(Matcher m, boolean isRegularExpression) {
//
//
// if(isRegularExpression) {
// return m.matches();
// } else {
// return m.lookingAt();
// }
// }
}
|
