?? jarinputreader.java
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// **********************************************************************// // <copyright>// // BBN Technologies// 10 Moulton Street// Cambridge, MA 02138// (617) 873-8000// // Copyright (C) BBNT Solutions LLC. All rights reserved.// // </copyright>// **********************************************************************// // $Source: /cvs/distapps/openmap/src/openmap/com/bbn/openmap/io/JarInputReader.java,v $// $RCSfile: JarInputReader.java,v $// $Revision: 1.3.2.1 $// $Date: 2004/10/14 18:27:01 $// $Author: dietrick $// // **********************************************************************package com.bbn.openmap.io;import java.io.*;import java.net.*;import java.util.jar.*;import com.bbn.openmap.util.Debug;/** * An InputReader to handle entries in a Jar file. */public class JarInputReader extends StreamInputReader { /** Where to go to hook up with a resource. */ protected URL inputURL = null; protected JarFile jarFile = null; protected String jarFileName = null; protected String jarEntryName = null; /** * Create a JarInputReader win the path to a jar file, and the * entry name. The entry name should be a path to the entry from * the internal root of the jar file. */ public JarInputReader(String jarFilePath, String jarEntryName) throws IOException { if (Debug.debugging("binaryfile")) { Debug.output("JarInputReader created for " + jarEntryName + " in " + jarFilePath); } this.jarFileName = jarFilePath; this.jarEntryName = jarEntryName; reopen(); name = jarFilePath + "!" + jarEntryName; } /** * Reset the InputStream to the beginning, by closing the current * connection and reopening it. */ public void reopen() throws IOException { super.reopen(); Debug.message("binaryfile", "JarInputReader: reopening jarFile " + jarFileName); if (jarFile != null) jarFile.close(); jarFile = null; jarFile = new JarFile(URLDecoder.decode(jarFileName, "UTF-8")); JarEntry entry = jarFile.getJarEntry(jarEntryName); inputStream = jarFile.getInputStream(entry); if (inputStream == null) { Debug.error("JarInputReader: Problem getting input stream for " + jarEntryName + " in " + jarFileName); } } /** * Closes the underlying file * * @exception IOException Any IO errors encountered in accessing * the file */ public void close() throws IOException { jarFile.close(); super.close(); }}
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