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| 1 | +/* | |
| 2 | + * Copyright (c) 1998, 2008, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package com.sun.tools.example.debug.tty; | |
| 27 | + | |
| 28 | +import com.sun.jdi.Location; | |
| 29 | +import com.sun.jdi.AbsentInformationException; | |
| 30 | +import java.util.List; | |
| 31 | +import java.util.ArrayList; | |
| 32 | +import java.util.StringTokenizer; | |
| 33 | +import java.io.*; | |
| 34 | + | |
| 35 | +class SourceMapper { | |
| 36 | + | |
| 37 | + private final String[] dirs; | |
| 38 | + | |
| 39 | + SourceMapper(List<String> sourcepath) { | |
| 40 | + /* | |
| 41 | + * sourcepath can arrive from the debugee as a List. | |
| 42 | + * (via PathSearchingVirtualMachine.classPath()) | |
| 43 | + */ | |
| 44 | + List<String> dirList = new ArrayList<String>(); | |
| 45 | + for (String element : sourcepath) { | |
| 46 | + //XXX remove .jar and .zip files; we want only directories on | |
| 47 | + //the source path. (Bug ID 4186582) | |
| 48 | + if ( ! (element.endsWith(".jar") || | |
| 49 | + element.endsWith(".zip"))) { | |
| 50 | + dirList.add(element); | |
| 51 | + } | |
| 52 | + } | |
| 53 | + dirs = dirList.toArray(new String[0]); | |
| 54 | + } | |
| 55 | + | |
| 56 | + SourceMapper(String sourcepath) { | |
| 57 | + /* | |
| 58 | + * sourcepath can also arrive from the command line | |
| 59 | + * as a String. (via "-sourcepath") | |
| 60 | + * | |
| 61 | + * Using File.pathSeparator as delimiter below is OK | |
| 62 | + * because we are on the same machine as the command | |
| 63 | + * line originiated. | |
| 64 | + */ | |
| 65 | + StringTokenizer st = new StringTokenizer(sourcepath, | |
| 66 | + File.pathSeparator); | |
| 67 | + List<String> dirList = new ArrayList<String>(); | |
| 68 | + while (st.hasMoreTokens()) { | |
| 69 | + String s = st.nextToken(); | |
| 70 | + //XXX remove .jar and .zip files; we want only directories on | |
| 71 | + //the source path. (Bug ID 4186582) | |
| 72 | + if ( ! (s.endsWith(".jar") || | |
| 73 | + s.endsWith(".zip"))) { | |
| 74 | + dirList.add(s); | |
| 75 | + } | |
| 76 | + } | |
| 77 | + dirs = dirList.toArray(new String[0]); | |
| 78 | + } | |
| 79 | + | |
| 80 | + /* | |
| 81 | + * Return the current sourcePath as a String. | |
| 82 | + */ | |
| 83 | + String getSourcePath() { | |
| 84 | + int i = 0; | |
| 85 | + StringBuffer sp; | |
| 86 | + if (dirs.length < 1) { | |
| 87 | + return ""; //The source path is empty. | |
| 88 | + } else { | |
| 89 | + sp = new StringBuffer(dirs[i++]); | |
| 90 | + } | |
| 91 | + for (; i < dirs.length; i++) { | |
| 92 | + sp.append(File.pathSeparator); | |
| 93 | + sp.append(dirs[i]); | |
| 94 | + } | |
| 95 | + return sp.toString(); | |
| 96 | + } | |
| 97 | + | |
| 98 | + /** | |
| 99 | + * Return a File cooresponding to the source of this location. | |
| 100 | + * Return null if not available. | |
| 101 | + */ | |
| 102 | + File sourceFile(Location loc) { | |
| 103 | + try { | |
| 104 | + String filename = loc.sourceName(); | |
| 105 | + String refName = loc.declaringType().name(); | |
| 106 | + int iDot = refName.lastIndexOf('.'); | |
| 107 | + String pkgName = (iDot >= 0)? refName.substring(0, iDot+1) : ""; | |
| 108 | + String full = pkgName.replace('.', File.separatorChar) + filename; | |
| 109 | + for (int i= 0; i < dirs.length; ++i) { | |
| 110 | + File path = new File(dirs[i], full); | |
| 111 | + if (path.exists()) { | |
| 112 | + return path; | |
| 113 | + } | |
| 114 | + } | |
| 115 | + return null; | |
| 116 | + } catch (AbsentInformationException e) { | |
| 117 | + return null; | |
| 118 | + } | |
| 119 | + } | |
| 120 | + | |
| 121 | + /** | |
| 122 | + * Return a BufferedReader cooresponding to the source | |
| 123 | + * of this location. | |
| 124 | + * Return null if not available. | |
| 125 | + * Note: returned reader must be closed. | |
| 126 | + */ | |
| 127 | + BufferedReader sourceReader(Location loc) { | |
| 128 | + File sourceFile = sourceFile(loc); | |
| 129 | + if (sourceFile == null) { | |
| 130 | + return null; | |
| 131 | + } | |
| 132 | + try { | |
| 133 | + return new BufferedReader(new FileReader(sourceFile)); | |
| 134 | + } catch(IOException exc) { | |
| 135 | + } | |
| 136 | + return null; | |
| 137 | + } | |
| 138 | +} | |