001: /*
002: * Copyright (c) 2003 The Visigoth Software Society. All rights
003: * reserved.
004: *
005: * Redistribution and use in source and binary forms, with or without
006: * modification, are permitted provided that the following conditions
007: * are met:
008: *
009: * 1. Redistributions of source code must retain the above copyright
010: * notice, this list of conditions and the following disclaimer.
011: *
012: * 2. Redistributions in binary form must reproduce the above copyright
013: * notice, this list of conditions and the following disclaimer in
014: * the documentation and/or other materials provided with the
015: * distribution.
016: *
017: * 3. The end-user documentation included with the redistribution, if
018: * any, must include the following acknowledgement:
019: * "This product includes software developed by the
020: * Visigoth Software Society (http://www.visigoths.org/)."
021: * Alternately, this acknowledgement may appear in the software itself,
022: * if and wherever such third-party acknowledgements normally appear.
023: *
024: * 4. Neither the name "FreeMarker", "Visigoth", nor any of the names of the
025: * project contributors may be used to endorse or promote products derived
026: * from this software without prior written permission. For written
027: * permission, please contact visigoths@visigoths.org.
028: *
029: * 5. Products derived from this software may not be called "FreeMarker" or "Visigoth"
030: * nor may "FreeMarker" or "Visigoth" appear in their names
031: * without prior written permission of the Visigoth Software Society.
032: *
033: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
034: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
035: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
036: * DISCLAIMED. IN NO EVENT SHALL THE VISIGOTH SOFTWARE SOCIETY OR
037: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
038: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
039: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
040: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
041: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
042: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
043: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
044: * SUCH DAMAGE.
045: * ====================================================================
046: *
047: * This software consists of voluntary contributions made by many
048: * individuals on behalf of the Visigoth Software Society. For more
049: * information on the Visigoth Software Society, please see
050: * http://www.visigoths.org/
051: */
052:
053: package freemarker.cache;
054:
055: import java.io.File;
056: import java.io.IOException;
057: import java.io.InputStream;
058: import java.net.URL;
059: import java.net.URLConnection;
060:
061: /**
062: * Wraps a <code>java.net.URL</code>, and implements methods required for a typical template source.
063: * @version $Id: URLTemplateSource.java,v 1.4 2003/04/02 11:43:18 szegedia Exp $
064: * @author Daniel Dékány
065: */
066: class URLTemplateSource {
067: private final URL url;
068: private URLConnection conn;
069: private InputStream inputStream;
070:
071: URLTemplateSource(URL url) throws IOException {
072: this .url = url;
073: this .conn = url.openConnection();
074: }
075:
076: public boolean equals(Object o) {
077: if (o instanceof URLTemplateSource) {
078: return url.equals(((URLTemplateSource) o).url);
079: } else {
080: return false;
081: }
082: }
083:
084: public int hashCode() {
085: return url.hashCode();
086: }
087:
088: public String toString() {
089: return url.toString();
090: }
091:
092: long lastModified() {
093: long lastModified = conn.getLastModified();
094: if (lastModified == -1L && url.getProtocol().equals("file")) {
095: // Hack for obtaining accurate last modified time for
096: // URLs that point to the local file system. This is fixed
097: // in JDK 1.4, but prior JDKs returns -1 for file:// URLs.
098: return new File(url.getFile()).lastModified();
099: } else {
100: return lastModified;
101: }
102: }
103:
104: InputStream getInputStream() throws IOException {
105: inputStream = conn.getInputStream();
106: return inputStream;
107: }
108:
109: void close() throws IOException {
110: try {
111: if (inputStream != null) {
112: inputStream.close();
113: }
114: } finally {
115: inputStream = null;
116: conn = null;
117: }
118: }
119: }
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