| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.ant.compress.resources; |
| |
| import java.io.File; |
| import java.io.InputStream; |
| import java.io.IOException; |
| import java.io.FilterInputStream; |
| |
| import org.apache.tools.ant.Project; |
| import org.apache.tools.ant.BuildException; |
| import org.apache.tools.ant.types.Resource; |
| import org.apache.tools.ant.types.resources.FileProvider; |
| import org.apache.tools.ant.util.FileUtils; |
| |
| import org.apache.ant.compress.util.ZipStreamFactory; |
| |
| import org.apache.commons.compress.archivers.ArchiveEntry; |
| import org.apache.commons.compress.archivers.zip.ZipArchiveEntry; |
| import org.apache.commons.compress.archivers.zip.ZipExtraField; |
| import org.apache.commons.compress.archivers.zip.ZipFile; |
| |
| /** |
| * A Resource representation of an entry in a zipfile. |
| */ |
| public final class ZipResource extends CommonsCompressArchiveResource { |
| |
| private ZipExtraField[] extras; |
| private int method; |
| |
| /** |
| * Default constructor. |
| */ |
| public ZipResource() { |
| super(new ZipStreamFactory(), "zip"); |
| } |
| |
| /** |
| * Construct a ZipResource representing the specified |
| * entry in the specified zipfile. |
| * @param z the zipfile as File. |
| * @param enc the encoding used for filenames. |
| * @param e the ZipEntry. |
| */ |
| public ZipResource(File z, String enc, ZipArchiveEntry e) { |
| super(new ZipStreamFactory(), "zip", z, e); |
| setEncoding(enc); |
| setEntry(e); |
| } |
| |
| /** |
| * Construct a ZipResource representing the specified |
| * entry in the specified zip archive. |
| * @param z the zipfile as File. |
| * @param enc the encoding used for filenames. |
| * @param e the ZipEntry. |
| */ |
| public ZipResource(Resource z, String enc, ZipArchiveEntry e) { |
| super(new ZipStreamFactory(), "zip", z, e); |
| setEncoding(enc); |
| setEntry(e); |
| } |
| |
| /** |
| * Set the zipfile that holds this ZipResource. |
| * @param z the zipfile as a File. |
| */ |
| public void setZipfile(File z) { |
| setArchive(z); |
| } |
| |
| /** |
| * Set the zipfile that holds this ZipResource. |
| * @param z the zipfile as a Resource. |
| */ |
| public void setZipResource(Resource z) { |
| addConfigured(z); |
| } |
| |
| /** |
| * Get the zipfile that holds this ZipResource. |
| * @return the zipfile as a File or null if it is not a file. |
| */ |
| public File getZipfile() { |
| FileProvider fp = (FileProvider) getArchive().as(FileProvider.class); |
| return fp != null ? fp.getFile() : null; |
| } |
| |
| /** |
| * Return an InputStream for reading the contents of this Resource. |
| * @return an InputStream object. |
| * @throws IOException if the zip file cannot be opened, |
| * or the entry cannot be read. |
| */ |
| @Override |
| public InputStream getInputStream() throws IOException { |
| if (isReference()) { |
| return ((Resource) getCheckedRef()).getInputStream(); |
| } |
| File f = getZipfile(); |
| if (f == null) { |
| return super.getInputStream(); |
| } |
| |
| final ZipFile z = new ZipFile(f, getEncoding()); |
| ZipArchiveEntry ze = z.getEntry(getName()); |
| if (ze == null) { |
| z.close(); |
| throw new BuildException("no entry " + getName() + " in " |
| + getArchive()); |
| } |
| return new FilterInputStream(z.getInputStream(ze)) { |
| @Override |
| public void close() throws IOException { |
| FileUtils.close(in); |
| z.close(); |
| } |
| @Override |
| protected void finalize() throws Throwable { |
| try { |
| close(); |
| } finally { |
| super.finalize(); |
| } |
| } |
| }; |
| } |
| |
| /** |
| * Retrieves extra fields. |
| * @return an array of the extra fields |
| */ |
| public ZipExtraField[] getExtraFields() { |
| if (isReference()) { |
| return ((ZipResource) getCheckedRef()).getExtraFields(); |
| } |
| checkEntry(); |
| if (extras == null) { |
| return new ZipExtraField[0]; |
| } |
| return extras; |
| } |
| |
| /** |
| * The compression method that has been used. |
| */ |
| public int getMethod() { |
| return method; |
| } |
| |
| /** |
| * fetches information from the named entry inside the archive. |
| */ |
| @Override |
| protected void fetchEntry() { |
| File f = getZipfile(); |
| if (f == null) { |
| super.fetchEntry(); |
| return; |
| } |
| |
| try (ZipFile z = new ZipFile(getZipfile(), getEncoding())) { |
| setEntry(z.getEntry(getName())); |
| } catch (IOException e) { |
| log(e.getMessage(), Project.MSG_DEBUG); |
| throw new BuildException(e); |
| } |
| } |
| |
| protected void setEntry(ArchiveEntry e) { |
| super.setEntry(e); |
| if (e != null) { |
| ZipArchiveEntry ze = (ZipArchiveEntry) e; |
| extras = ze.getExtraFields(true); |
| method = ze.getMethod(); |
| } |
| } |
| |
| } |