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/* |
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* The Apache Software License, Version 1.1 |
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* |
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* Copyright (c) 2001-2002 The Apache Software Foundation. All rights |
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* reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, if |
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* any, must include the following acknowlegement: |
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* "This product includes software developed by the |
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* Apache Software Foundation (http://www.apache.org/)." |
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* Alternately, this acknowlegement may appear in the software itself, |
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* if and wherever such third-party acknowlegements normally appear. |
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* |
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* 4. The names "The Jakarta Project", "Ant", and "Apache Software |
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* Foundation" must not be used to endorse or promote products derived |
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* from this software without prior written permission. For written |
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* permission, please contact apache@apache.org. |
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* |
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* 5. Products derived from this software may not be called "Apache" |
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* nor may "Apache" appear in their names without prior written |
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* permission of the Apache Group. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of the Apache Software Foundation. For more |
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* information on the Apache Software Foundation, please see |
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* <http://www.apache.org/>. |
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*/ |
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package org.apache.tools.ant.taskdefs.optional.jsp; |
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import java.io.File; |
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import java.io.IOException; |
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/** |
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* this is a class derived from the Jasper code to map from a JSP filename |
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* to a valid java classname |
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* |
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* @author Steve Loughran |
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* @author Danno Ferrin |
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* @see org.apache.jasper.compiler.CommandLineCompiler; |
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*/ |
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public class JspNameMangler { |
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/** |
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* this is the list of keywords which can not be used as classnames |
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*/ |
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public static String[] keywords = { |
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"assert", |
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"abstract", "boolean", "break", "byte", |
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"case", "catch", "char", "class", |
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"const", "continue", "default", "do", |
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"double", "else", "extends", "final", |
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"finally", "float", "for", "goto", |
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"if", "implements", "import", |
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"instanceof", "int", "interface", |
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"long", "native", "new", "package", |
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"private", "protected", "public", |
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"return", "short", "static", "super", |
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"switch", "synchronized", "this", |
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"throw", "throws", "transient", |
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"try", "void", "volatile", "while" |
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}; |
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/** |
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* map from a jsp file to a java filename; does not do packages |
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* |
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* @param jspFile file |
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* @return java filename |
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*/ |
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public String mapJspToJavaName(File jspFile) { |
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return mapJspToBaseName(jspFile) + ".java"; |
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} |
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/** |
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* map from a jsp file to a base name; does not deal with extensions |
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* |
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* @param jspFile jspFile file |
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* @return exensionless potentially remapped name |
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*/ |
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public String mapJspToBaseName(File jspFile) { |
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String className; |
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className = stripExtension(jspFile); |
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// since we don't mangle extensions like the servlet does, |
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// we need to check for keywords as class names |
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for (int i = 0; i < keywords.length; ++i) { |
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if (className.equals(keywords[i])) { |
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className += "%"; |
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break; |
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} |
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} |
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// Fix for invalid characters. If you think of more add to the list. |
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StringBuffer modifiedClassName = new StringBuffer(className.length()); |
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// first char is more restrictive than the rest |
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char firstChar = className.charAt(0); |
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if (Character.isJavaIdentifierStart(firstChar)) { |
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modifiedClassName.append(firstChar); |
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} |
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else { |
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modifiedClassName.append(mangleChar(firstChar)); |
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} |
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// this is the rest |
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for (int i = 1; i < className.length(); i++) { |
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char subChar = className.charAt(i); |
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if (Character.isJavaIdentifierPart(subChar)) { |
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modifiedClassName.append(subChar); |
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} |
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else { |
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modifiedClassName.append(mangleChar(subChar)); |
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} |
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} |
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return modifiedClassName.toString(); |
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} |
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/** |
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* get short filename from file |
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* |
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* @param jspFile file in |
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* @return file without any jsp extension |
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*/ |
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private String stripExtension(File jspFile) { |
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String className; |
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String filename = jspFile.getName(); |
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if (filename.endsWith(".jsp")) { |
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className = filename.substring(0, filename.length() - 4); |
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} |
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else { |
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className = filename; |
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} |
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return className; |
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} |
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/** |
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* definition of the char escaping algorithm |
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* |
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* @param ch char to mangle |
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* @return mangled string; 5 digit hex value |
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*/ |
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private final static String mangleChar(char ch) { |
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if (ch == File.separatorChar) { |
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ch = '/'; |
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} |
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String s = Integer.toHexString(ch); |
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int nzeros = 5 - s.length(); |
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char[] result = new char[6]; |
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result[0] = '_'; |
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for (int i = 1; i <= nzeros; ++i) { |
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result[i] = '0'; |
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} |
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int resultIndex = 0; |
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for (int i = nzeros + 1; i < 6; ++i) { |
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result[i] = s.charAt(resultIndex++); |
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} |
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return new String(result); |
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} |
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} |
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Steve Loughran