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
|
/*
* 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.tools.ant.taskdefs.optional.jsp;
import java.io.File;
import org.apache.tools.ant.util.StringUtils;
/**
* This is a class derived from the Jasper code
* (org.apache.jasper.compiler.CommandLineCompiler) to map from a JSP filename
* to a valid Java classname.
*
*/
public class JspNameMangler implements JspMangler {
// CheckStyle:ConstantNameCheck OFF - bc
/**
* this is the list of keywords which can not be used as classnames
*/
public static final String[] keywords = {
"assert",
"abstract", "boolean", "break", "byte",
"case", "catch", "char", "class",
"const", "continue", "default", "do",
"double", "else", "extends", "final",
"finally", "float", "for", "goto",
"if", "implements", "import",
"instanceof", "int", "interface",
"long", "native", "new", "package",
"private", "protected", "public",
"return", "short", "static", "super",
"switch", "synchronized", "this",
"throw", "throws", "transient",
"try", "void", "volatile", "while"
};
// CheckStyle:ConstantNameCheck ON
/**
* map from a jsp file to a java filename; does not do packages
*
* @param jspFile file
* @return java filename
*/
public String mapJspToJavaName(File jspFile) {
return mapJspToBaseName(jspFile) + ".java";
}
/**
* map from a jsp file to a base name; does not deal with extensions
*
* @param jspFile jspFile file
* @return exensionless potentially remapped name
*/
private String mapJspToBaseName(File jspFile) {
String className;
className = stripExtension(jspFile);
// since we don't mangle extensions like the servlet does,
// we need to check for keywords as class names
for (int i = 0; i < keywords.length; ++i) {
if (className.equals(keywords[i])) {
className += "%";
break;
}
}
// Fix for invalid characters. If you think of more add to the list.
StringBuffer modifiedClassName = new StringBuffer(className.length());
// first char is more restrictive than the rest
char firstChar = className.charAt(0);
if (Character.isJavaIdentifierStart(firstChar)) {
modifiedClassName.append(firstChar);
} else {
modifiedClassName.append(mangleChar(firstChar));
}
// this is the rest
for (int i = 1; i < className.length(); i++) {
char subChar = className.charAt(i);
if (Character.isJavaIdentifierPart(subChar)) {
modifiedClassName.append(subChar);
} else {
modifiedClassName.append(mangleChar(subChar));
}
}
return modifiedClassName.toString();
}
/**
* get short filename from file
*
* @param jspFile file in
* @return file without any jsp extension
*/
private String stripExtension(File jspFile) {
return StringUtils.removeSuffix(jspFile.getName(), ".jsp");
}
/**
* definition of the char escaping algorithm
*
* @param ch char to mangle
* @return mangled string; 5 digit hex value
*/
private static String mangleChar(char ch) {
// CheckStyle:MagicNumber OFF
if (ch == File.separatorChar) {
ch = '/';
}
String s = Integer.toHexString(ch);
int nzeros = 5 - s.length();
char[] result = new char[6];
result[0] = '_';
for (int i = 1; i <= nzeros; ++i) {
result[i] = '0';
}
int resultIndex = 0;
for (int i = nzeros + 1; i < 6; ++i) {
result[i] = s.charAt(resultIndex++);
}
return new String(result);
// CheckStyle:MagicNumber ON
}
/**
* taking in the substring representing the path relative to the source dir
* return a new string representing the destination path
* not supported, as jasper in tomcat4.0 doesn't either
* @param path not used
* @return null always.
*/
public String mapPath(String path) {
return null;
}
}
|
