com.google.gwt.dev.resource.impl.ZipFileResource Maven / Gradle / Ivy
/*
* Copyright 2008 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.gwt.dev.resource.impl;
import com.google.gwt.dev.util.StringInterner;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.ZipFile;
/**
* Represents a resource contained in a jar or zip file.
*/
public class ZipFileResource extends AbstractResource {
private ZipFileClassPathEntry classPathEntry;
private final String entryName;
private String filePath;
private final long lastModified;
private final String[] pathParts;
private final ZipFile zipFile;
/**
* Constructs a ZipFileResource from a jar class path entry and a zip entry name.
*/
public ZipFileResource(ZipFileClassPathEntry classPathEntry, String entryName) {
this.classPathEntry = classPathEntry;
this.entryName = StringInterner.get().intern(entryName);
this.pathParts = entryName.split("/");
this.zipFile = classPathEntry.getZipFile();
this.filePath = classPathEntry.getLocation();
assert filePath.startsWith("file:/");
this.lastModified = classPathEntry.lastModified();
}
@Override
public long getLastModified() {
return lastModified;
}
@Override
public String getLocation() {
return "jar:" + filePath + "!/" + entryName;
}
@Override
public String getPath() {
return entryName;
}
/**
* Returns the components of {@link #getPath()}.
*/
public String[] getPathParts() {
return pathParts;
}
@Override
public InputStream openContents() throws IOException {
return zipFile.getInputStream(zipFile.getEntry(entryName));
}
}