| /* |
| * Copyright (c) 2003 The Visigoth Software Society. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, if |
| * any, must include the following acknowledgement: |
| * "This product includes software developed by the |
| * Visigoth Software Society (http://www.visigoths.org/)." |
| * Alternately, this acknowledgement may appear in the software itself, |
| * if and wherever such third-party acknowledgements normally appear. |
| * |
| * 4. Neither the name "FreeMarker", "Visigoth", nor any of the names of the |
| * project contributors may be used to endorse or promote products derived |
| * from this software without prior written permission. For written |
| * permission, please contact visigoths@visigoths.org. |
| * |
| * 5. Products derived from this software may not be called "FreeMarker" or "Visigoth" |
| * nor may "FreeMarker" or "Visigoth" appear in their names |
| * without prior written permission of the Visigoth Software Society. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE VISIGOTH SOFTWARE SOCIETY OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Visigoth Software Society. For more |
| * information on the Visigoth Software Society, please see |
| * http://www.visigoths.org/ |
| */ |
| |
| package freemarker.cache; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.JarURLConnection; |
| import java.net.URL; |
| import java.net.URLConnection; |
| |
| /** |
| * Wraps a <code>java.net.URL</code>, and implements methods required for a typical template source. |
| * @author Daniel Dekany |
| * @author TJ Laurenzo |
| */ |
| class URLTemplateSource { |
| private final URL url; |
| private URLConnection conn; |
| private InputStream inputStream; |
| |
| URLTemplateSource(URL url) throws IOException { |
| this.url = url; |
| this.conn = url.openConnection(); |
| } |
| |
| public boolean equals(Object o) { |
| if (o instanceof URLTemplateSource) { |
| return url.equals(((URLTemplateSource) o).url); |
| } else { |
| return false; |
| } |
| } |
| |
| public int hashCode() { |
| return url.hashCode(); |
| } |
| |
| public String toString() { |
| return url.toString(); |
| } |
| |
| long lastModified() { |
| if (conn instanceof JarURLConnection) { |
| // There is a bug in sun's jar url connection that causes file handle leaks when calling getLastModified() |
| // Since the time stamps of jar file contents can't vary independent from the jar file timestamp, just use |
| // the jar file timestamp |
| URL jarURL=((JarURLConnection)conn).getJarFileURL(); |
| if (jarURL.getProtocol().equals("file")) { |
| // Return the last modified time of the underlying file - saves some opening and closing |
| return new File(jarURL.getFile()).lastModified(); |
| } else { |
| // Use the URL mechanism |
| URLConnection jarConn=null; |
| try { |
| jarConn=jarURL.openConnection(); |
| return jarConn.getLastModified(); |
| } catch (IOException e) { |
| return -1; |
| } finally { |
| try { |
| if (jarConn!=null) jarConn.getInputStream().close(); |
| } catch (IOException e) { } |
| } |
| } |
| } else { |
| long lastModified = conn.getLastModified(); |
| if (lastModified == -1L && url.getProtocol().equals("file")) { |
| // Hack for obtaining accurate last modified time for |
| // URLs that point to the local file system. This is fixed |
| // in JDK 1.4, but prior JDKs returns -1 for file:// URLs. |
| return new File(url.getFile()).lastModified(); |
| } else { |
| return lastModified; |
| } |
| } |
| } |
| |
| InputStream getInputStream() throws IOException { |
| inputStream = conn.getInputStream(); |
| return inputStream; |
| } |
| |
| void close() throws IOException { |
| try { |
| if (inputStream != null) { |
| inputStream.close(); |
| } else { |
| conn.getInputStream().close(); |
| } |
| } finally { |
| inputStream = null; |
| conn = null; |
| } |
| } |
| } |