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
|
/*
* Copyright (C) 2010, 2017 Red Hat Inc. 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.attributes;
import static org.eclipse.jgit.ignore.IMatcher.NO_MATCH;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.eclipse.jgit.attributes.Attribute.State;
import org.eclipse.jgit.errors.InvalidPatternException;
import org.eclipse.jgit.ignore.FastIgnoreRule;
import org.eclipse.jgit.ignore.IMatcher;
import org.eclipse.jgit.ignore.internal.PathMatcher;
/**
* A single attributes rule corresponding to one line in a .gitattributes file.
*
* Inspiration from: {@link org.eclipse.jgit.ignore.FastIgnoreRule}
*
* @since 3.7
*/
public class AttributesRule {
/**
* regular expression for splitting attributes - space, tab and \r (the C
* implementation oddly enough allows \r between attributes)
* */
private static final String ATTRIBUTES_SPLIT_REGEX = "[ \t\r]"; //$NON-NLS-1$
private static List<Attribute> parseAttributes(String attributesLine) {
// the C implementation oddly enough allows \r between attributes too.
ArrayList<Attribute> result = new ArrayList<>();
for (String attribute : attributesLine.split(ATTRIBUTES_SPLIT_REGEX)) {
attribute = attribute.trim();
if (attribute.length() == 0)
continue;
if (attribute.startsWith("-")) {//$NON-NLS-1$
if (attribute.length() > 1)
result.add(new Attribute(attribute.substring(1),
State.UNSET));
continue;
}
if (attribute.startsWith("!")) {//$NON-NLS-1$
if (attribute.length() > 1)
result.add(new Attribute(attribute.substring(1),
State.UNSPECIFIED));
continue;
}
final int equalsIndex = attribute.indexOf('=');
if (equalsIndex == -1)
result.add(new Attribute(attribute, State.SET));
else {
String attributeKey = attribute.substring(0, equalsIndex);
if (attributeKey.length() > 0) {
String attributeValue = attribute
.substring(equalsIndex + 1);
result.add(new Attribute(attributeKey, attributeValue));
}
}
}
return result;
}
private final String pattern;
private final List<Attribute> attributes;
private final boolean nameOnly;
private final boolean dirOnly;
private final IMatcher matcher;
/**
* Create a new attribute rule with the given pattern. Assumes that the
* pattern is already trimmed.
*
* @param pattern
* Base pattern for the attributes rule. This pattern will be
* parsed to generate rule parameters. It can not be
* <code>null</code>.
* @param attributes
* the rule attributes. This string will be parsed to read the
* attributes.
*/
public AttributesRule(String pattern, String attributes) {
this.attributes = parseAttributes(attributes);
if (pattern.endsWith("/")) { //$NON-NLS-1$
pattern = pattern.substring(0, pattern.length() - 1);
dirOnly = true;
} else {
dirOnly = false;
}
int slashIndex = pattern.indexOf('/');
if (slashIndex < 0) {
nameOnly = true;
} else if (slashIndex == 0) {
nameOnly = false;
} else {
nameOnly = false;
// Contains "/" but does not start with one
// Adding / to the start should not interfere with matching
pattern = "/" + pattern; //$NON-NLS-1$
}
IMatcher candidateMatcher = NO_MATCH;
try {
candidateMatcher = PathMatcher.createPathMatcher(pattern,
Character.valueOf(FastIgnoreRule.PATH_SEPARATOR), dirOnly);
} catch (InvalidPatternException e) {
// ignore: invalid patterns are silently ignored
}
this.matcher = candidateMatcher;
this.pattern = pattern;
}
/**
* Whether to match directories only
*
* @return {@code true} if the pattern should match directories only
* @since 4.3
*/
public boolean isDirOnly() {
return dirOnly;
}
/**
* Return the attributes.
*
* @return an unmodifiable list of attributes (never returns
* <code>null</code>)
*/
public List<Attribute> getAttributes() {
return Collections.unmodifiableList(attributes);
}
/**
* Whether the pattern is only a file name and not a path
*
* @return <code>true</code> if the pattern is just a file name and not a
* path
*/
public boolean isNameOnly() {
return nameOnly;
}
/**
* Get the pattern
*
* @return The blob pattern to be used as a matcher (never returns
* <code>null</code>)
*/
public String getPattern() {
return pattern;
}
/**
* Returns <code>true</code> if a match was made.
*
* @param relativeTarget
* Name pattern of the file, relative to the base directory of
* this rule
* @param isDirectory
* Whether the target file is a directory or not
* @return True if a match was made.
*/
public boolean isMatch(String relativeTarget, boolean isDirectory) {
if (relativeTarget == null)
return false;
if (relativeTarget.length() == 0)
return false;
boolean match = matcher.matches(relativeTarget, isDirectory, true);
return match;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(pattern);
for (Attribute a : attributes) {
sb.append(" "); //$NON-NLS-1$
sb.append(a);
}
return sb.toString();
}
}
|
