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/*
* 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;
/**
* this class implements the name mangling rules of the jasper in tomcat4.1.x
* which is likely to remain for some time
* @see "org.apache.jasper.JspCompilationContext"
*/
public class Jasper41Mangler implements JspMangler {
/**
* map from a jsp file to a java filename; does not do packages
*
* @param jspFile file
* @return java filename
*/
public String mapJspToJavaName(File jspFile) {
String jspUri = jspFile.getAbsolutePath();
int start = jspUri.lastIndexOf(File.separatorChar) + 1;
int end = jspUri.length();
StringBuffer modifiedClassName;
modifiedClassName = new StringBuffer(jspUri.length() - start);
if (!Character.isJavaIdentifierStart(jspUri.charAt(start))
|| jspUri.charAt(start) == '_') {
// If the first char is not a start of Java identifier or is _
// prepend a '_'.
modifiedClassName.append('_');
}
for (int i = start; i < end; i++) {
char ch = jspUri.charAt(i);
if (Character.isJavaIdentifierPart(ch)) {
modifiedClassName.append(ch);
} else if (ch == '.') {
modifiedClassName.append('_');
} else {
modifiedClassName.append(mangleChar(ch));
}
}
return modifiedClassName.toString();
}
/**
* Mangle the specified character to create a legal Java class name.
*/
private static String mangleChar(char ch) {
// CheckStyle:MagicNumber OFF
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';
}
for (int i = nzeros + 1, j = 0; i < 6; i++, j++) {
result[i] = s.charAt(j);
}
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
* @param path not used.
* @return null as this is not implemented.
* @todo
*/
public String mapPath(String path) {
return null;
}
}
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