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
|
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.jasper.compiler;
import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.jasper.JasperException;
import org.apache.jasper.JspCompilationContext;
/** Reflection stuff for org.apache.jasper.compiler.Compiler.
*
* @author Petr Jiricka
*/
public class CompilerHacks {
private static final Logger LOGGER = Logger.getLogger(CompilerHacks.class.getName());
// @GuardedBy(this)
private Compiler comp;
private final JspCompilationContext ctxt;
private static Field pageInfoF;
private static Field errDispatcherF;
static {
initMethodsAndFields();
}
/** Creates a new instance of CompilerHacks */
public CompilerHacks(JspCompilationContext ctxt) {
this.ctxt = ctxt;
}
static void initMethodsAndFields() {
try {
// pageInfo field
pageInfoF = Compiler.class.getDeclaredField("pageInfo"); // NOI18N
pageInfoF.setAccessible(true);
// errDispatcher field
errDispatcherF = Compiler.class.getDeclaredField("errDispatcher"); // NOI18N
errDispatcherF.setAccessible(true);
} catch (NoSuchFieldException e) {
LOGGER.log(Level.INFO, null, e);
}
}
private synchronized void setupCompiler() throws JasperException {
if (comp == null) {
comp = ctxt.createParser();
setErrDispatcherInCompiler(comp, new ErrorDispatcher(false));
comp.setPageInfo(new HackPageInfo(new BeanRepository(
ctxt.getClassLoader(), comp.getErrorDispatcher()), ctxt.getJspFile()));
}
}
Compiler getCompiler() throws JasperException {
setupCompiler();
return comp;
}
private static void setErrDispatcherInCompiler(Compiler c, ErrorDispatcher errDispatcher) throws JasperException {
try {
errDispatcherF.set(c, errDispatcher);
} catch (IllegalAccessException e) {
throw new JasperException(e);
}
}
/** Hacked PageInfo to get better XML directive data
*/
static final class HackPageInfo extends PageInfo {
/** Map of prefix -> uri. */
private final Map<String, String> approxXmlPrefixMapper = new HashMap<String, String>();
HackPageInfo(BeanRepository beanRepository, String jspFile) {
super(beanRepository, jspFile);
}
@Override
public void pushPrefixMapping(String prefix, String uri) {
super.pushPrefixMapping(prefix, uri);
if (uri != null) {
synchronized (approxXmlPrefixMapper) {
approxXmlPrefixMapper.put(prefix, uri);
}
}
}
Map<String, String> getApproxXmlPrefixMapper() {
synchronized (approxXmlPrefixMapper) {
return approxXmlPrefixMapper;
}
}
}
}
|
