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
|
/*******************************************************************************
* Copyright (c) 2009, 2019 Mountainminds GmbH & Co. KG and Contributors
* 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:
* Marc R. Hoffmann - initial API and implementation
*
*******************************************************************************/
package org.jacoco.agent.rt.internal;
import java.io.IOException;
import java.io.InputStream;
import java.util.Map;
import java.util.Properties;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Internal utility to load runtime configuration from a classpath resource and
* from system properties. System property keys are prefixed with
* <code>jacoco.</code>. If the same property is defined twice the system
* property takes precedence.
*/
final class ConfigLoader {
private static final String SYS_PREFIX = "jacoco-agent.";
private static final Pattern SUBST_PATTERN = Pattern
.compile("\\$\\{([^\\}]+)\\}");
static Properties load(final String resource, final Properties system) {
final Properties result = new Properties();
loadResource(resource, result);
loadSystemProperties(system, result);
substSystemProperties(result, system);
return result;
}
private static void loadResource(final String resource,
final Properties result) {
final InputStream file = Offline.class.getResourceAsStream(resource);
if (file != null) {
try {
result.load(file);
} catch (final IOException e) {
throw new RuntimeException(e);
}
}
}
private static void loadSystemProperties(final Properties system,
final Properties result) {
for (final Map.Entry<Object, Object> entry : system.entrySet()) {
final String keystr = entry.getKey().toString();
if (keystr.startsWith(SYS_PREFIX)) {
result.put(keystr.substring(SYS_PREFIX.length()),
entry.getValue());
}
}
}
private static void substSystemProperties(final Properties result,
final Properties system) {
for (final Map.Entry<Object, Object> entry : result.entrySet()) {
final String oldValue = (String) entry.getValue();
final StringBuilder newValue = new StringBuilder();
final Matcher m = SUBST_PATTERN.matcher(oldValue);
int pos = 0;
while (m.find()) {
newValue.append(oldValue.substring(pos, m.start()));
final String sub = system.getProperty(m.group(1));
newValue.append(sub == null ? m.group(0) : sub);
pos = m.end();
}
newValue.append(oldValue.substring(pos));
entry.setValue(newValue.toString());
}
}
private ConfigLoader() {
}
}
|
