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
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
/*
* Copyright (C) 2008, Florian Köberle <florianskarten@web.de> and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.fnmatch;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.eclipse.jgit.errors.InvalidPatternException;
import org.eclipse.jgit.internal.JGitText;
final class GroupHead extends AbstractHead {
private final List<CharacterPattern> characterClasses;
private static final Pattern REGEX_PATTERN = Pattern
.compile("([^-][-][^-]|\\[[.:=].*?[.:=]\\])"); //$NON-NLS-1$
private final boolean inverse;
GroupHead(String pattern, String wholePattern)
throws InvalidPatternException {
super(false);
this.characterClasses = new ArrayList<>();
this.inverse = pattern.startsWith("!"); //$NON-NLS-1$
if (inverse) {
pattern = pattern.substring(1);
}
final Matcher matcher = REGEX_PATTERN.matcher(pattern);
while (matcher.find()) {
final String characterClass = matcher.group(0);
if (characterClass.length() == 3 && characterClass.charAt(1) == '-') {
final char start = characterClass.charAt(0);
final char end = characterClass.charAt(2);
characterClasses.add(new CharacterRange(start, end));
} else if (characterClass.equals("[:alnum:]")) { //$NON-NLS-1$
characterClasses.add(LetterPattern.INSTANCE);
characterClasses.add(DigitPattern.INSTANCE);
} else if (characterClass.equals("[:alpha:]")) { //$NON-NLS-1$
characterClasses.add(LetterPattern.INSTANCE);
} else if (characterClass.equals("[:blank:]")) { //$NON-NLS-1$
characterClasses.add(new OneCharacterPattern(' '));
characterClasses.add(new OneCharacterPattern('\t'));
} else if (characterClass.equals("[:cntrl:]")) { //$NON-NLS-1$
characterClasses.add(new CharacterRange('\u0000', '\u001F'));
characterClasses.add(new OneCharacterPattern('\u007F'));
} else if (characterClass.equals("[:digit:]")) { //$NON-NLS-1$
characterClasses.add(DigitPattern.INSTANCE);
} else if (characterClass.equals("[:graph:]")) { //$NON-NLS-1$
characterClasses.add(new CharacterRange('\u0021', '\u007E'));
characterClasses.add(LetterPattern.INSTANCE);
characterClasses.add(DigitPattern.INSTANCE);
} else if (characterClass.equals("[:lower:]")) { //$NON-NLS-1$
characterClasses.add(LowerPattern.INSTANCE);
} else if (characterClass.equals("[:print:]")) { //$NON-NLS-1$
characterClasses.add(new CharacterRange('\u0020', '\u007E'));
characterClasses.add(LetterPattern.INSTANCE);
characterClasses.add(DigitPattern.INSTANCE);
} else if (characterClass.equals("[:punct:]")) { //$NON-NLS-1$
characterClasses.add(PunctPattern.INSTANCE);
} else if (characterClass.equals("[:space:]")) { //$NON-NLS-1$
characterClasses.add(WhitespacePattern.INSTANCE);
} else if (characterClass.equals("[:upper:]")) { //$NON-NLS-1$
characterClasses.add(UpperPattern.INSTANCE);
} else if (characterClass.equals("[:xdigit:]")) { //$NON-NLS-1$
characterClasses.add(new CharacterRange('0', '9'));
characterClasses.add(new CharacterRange('a', 'f'));
characterClasses.add(new CharacterRange('A', 'F'));
} else if (characterClass.equals("[:word:]")) { //$NON-NLS-1$
characterClasses.add(new OneCharacterPattern('_'));
characterClasses.add(LetterPattern.INSTANCE);
characterClasses.add(DigitPattern.INSTANCE);
} else {
final String message = MessageFormat.format(
JGitText.get().characterClassIsNotSupported,
characterClass);
throw new InvalidPatternException(message, wholePattern);
}
pattern = matcher.replaceFirst(""); //$NON-NLS-1$
matcher.reset(pattern);
}
// pattern contains now no ranges
for (int i = 0; i < pattern.length(); i++) {
final char c = pattern.charAt(i);
characterClasses.add(new OneCharacterPattern(c));
}
}
@Override
protected final boolean matches(char c) {
for (CharacterPattern pattern : characterClasses) {
if (pattern.matches(c)) {
return !inverse;
}
}
return inverse;
}
private interface CharacterPattern {
/**
* @param c
* the character to test
* @return returns true if the character matches a pattern.
*/
boolean matches(char c);
}
private static final class CharacterRange implements CharacterPattern {
private final char start;
private final char end;
CharacterRange(char start, char end) {
this.start = start;
this.end = end;
}
@Override
public final boolean matches(char c) {
return start <= c && c <= end;
}
}
private static final class DigitPattern implements CharacterPattern {
static final GroupHead.DigitPattern INSTANCE = new DigitPattern();
@Override
public final boolean matches(char c) {
return Character.isDigit(c);
}
}
private static final class LetterPattern implements CharacterPattern {
static final GroupHead.LetterPattern INSTANCE = new LetterPattern();
@Override
public final boolean matches(char c) {
return Character.isLetter(c);
}
}
private static final class LowerPattern implements CharacterPattern {
static final GroupHead.LowerPattern INSTANCE = new LowerPattern();
@Override
public final boolean matches(char c) {
return Character.isLowerCase(c);
}
}
private static final class UpperPattern implements CharacterPattern {
static final GroupHead.UpperPattern INSTANCE = new UpperPattern();
@Override
public final boolean matches(char c) {
return Character.isUpperCase(c);
}
}
private static final class WhitespacePattern implements CharacterPattern {
static final GroupHead.WhitespacePattern INSTANCE = new WhitespacePattern();
@Override
public final boolean matches(char c) {
return Character.isWhitespace(c);
}
}
private static final class OneCharacterPattern implements CharacterPattern {
private char expectedCharacter;
OneCharacterPattern(char c) {
this.expectedCharacter = c;
}
@Override
public final boolean matches(char c) {
return this.expectedCharacter == c;
}
}
private static final class PunctPattern implements CharacterPattern {
static final GroupHead.PunctPattern INSTANCE = new PunctPattern();
private static String punctCharacters = "-!\"#$%&'()*+,./:;<=>?@[\\]_`{|}~"; //$NON-NLS-1$
@Override
public boolean matches(char c) {
return punctCharacters.indexOf(c) != -1;
}
}
}
|
