| 1 | /*
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| 2 | * Copyright 2000-2004 The Apache Software Foundation
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | *
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| 16 | */
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| 17 |
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| 18 | package org.apache.tools.ant.taskdefs.optional.jsp;
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| 19 |
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| 20 | import java.io.File;
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| 21 |
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| 22 | /**
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| 23 | * this class implements the name mangling rules of the jasper in tomcat4.1.x
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| 24 | * which is likely to remain for some time
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| 25 | * @see org.apache.jasper.JspCompilationContext
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| 26 | */
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| 27 | public class Jasper41Mangler implements JspMangler {
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| 28 |
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| 29 |
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| 30 | /**
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| 31 | * map from a jsp file to a java filename; does not do packages
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| 32 | *
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| 33 | * @param jspFile file
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| 34 | * @return java filename
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| 35 | */
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| 36 | public String mapJspToJavaName(File jspFile) {
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| 37 | String jspUri = jspFile.getAbsolutePath();
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| 38 | int start = jspUri.lastIndexOf(File.separatorChar) + 1;
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| 39 | int end = jspUri.length();
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| 40 | StringBuffer modifiedClassName;
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| 41 | modifiedClassName = new StringBuffer(jspUri.length() - start);
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| 42 | if (!Character.isJavaIdentifierStart(jspUri.charAt(start))
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| 43 | || jspUri.charAt(start) == '_') {
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| 44 | // If the first char is not a start of Java identifier or is _
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| 45 | // prepend a '_'.
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| 46 | modifiedClassName.append('_');
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| 47 | }
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| 48 | for (int i = start; i < end; i++) {
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| 49 | char ch = jspUri.charAt(i);
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| 50 | if (Character.isJavaIdentifierPart(ch)) {
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| 51 | modifiedClassName.append(ch);
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| 52 | } else if (ch == '.') {
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| 53 | modifiedClassName.append('_');
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| 54 | } else {
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| 55 | modifiedClassName.append(mangleChar(ch));
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| 56 | }
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| 57 | }
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| 58 | return modifiedClassName.toString();
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| 59 | }
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| 60 |
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| 61 | /**
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| 62 | * Mangle the specified character to create a legal Java class name.
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| 63 | */
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| 64 | private static final String mangleChar(char ch) {
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| 65 |
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| 66 | String s = Integer.toHexString(ch);
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| 67 | int nzeros = 5 - s.length();
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| 68 | char[] result = new char[6];
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| 69 | result[0] = '_';
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| 70 | for (int i = 1; i <= nzeros; i++) {
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| 71 | result[i] = '0';
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| 72 | }
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| 73 | for (int i = nzeros + 1, j = 0; i < 6; i++, j++) {
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| 74 | result[i] = s.charAt(j);
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| 75 | }
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| 76 | return new String(result);
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| 77 | }
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| 78 |
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| 79 |
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| 80 | /**
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| 81 | * taking in the substring representing the path relative to the source dir
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| 82 | * return a new string representing the destination path
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| 83 | * @todo
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| 84 | */
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| 85 | public String mapPath(String path) {
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| 86 | return null;
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| 87 | }
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| 88 |
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| 89 | }
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