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Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/Archives.java')
| -rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/Archives.java | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/Archives.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/Archives.java new file mode 100644 index 00000000..4b0d51c6 --- /dev/null +++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/Archives.java @@ -0,0 +1,194 @@ +/* + * 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.tools.ant.types.resources; + +import java.util.Iterator; +import java.util.LinkedList; +import java.util.List; +import java.util.Stack; + +import org.apache.tools.ant.BuildException; +import org.apache.tools.ant.Project; +import org.apache.tools.ant.types.ArchiveFileSet; +import org.apache.tools.ant.types.DataType; +import org.apache.tools.ant.types.Reference; +import org.apache.tools.ant.types.Resource; +import org.apache.tools.ant.types.ResourceCollection; +import org.apache.tools.ant.types.TarFileSet; +import org.apache.tools.ant.types.ZipFileSet; +import org.apache.tools.ant.util.CollectionUtils; + +/** + * A resource collection that treats all nested resources as archives + * and returns the contents of the archives as its content. + * + * @since Ant 1.8.0 + */ +public class Archives extends DataType + implements ResourceCollection, Cloneable { + + private Union zips = new Union(); + private Union tars = new Union(); + + /** + * Wrapper to identify nested resource collections as ZIP + * archives. + */ + public Union createZips() { + if (isReference()) { + throw noChildrenAllowed(); + } + setChecked(false); + return zips; + } + + /** + * Wrapper to identify nested resource collections as ZIP + * archives. + */ + public Union createTars() { + if (isReference()) { + throw noChildrenAllowed(); + } + setChecked(false); + return tars; + } + + /** + * Sums the sizes of nested archives. + */ + public int size() { + if (isReference()) { + return ((Archives) getCheckedRef()).size(); + } + dieOnCircularReference(); + int total = 0; + for (final Iterator<ArchiveFileSet> i = grabArchives(); i.hasNext();) { + total += i.next().size(); + } + return total; + } + + /** + * Merges the nested collections. + */ + public Iterator<Resource> iterator() { + if (isReference()) { + return ((Archives) getCheckedRef()).iterator(); + } + dieOnCircularReference(); + final List<Resource> l = new LinkedList<Resource>(); + for (final Iterator<ArchiveFileSet> i = grabArchives(); i.hasNext();) { + l.addAll(CollectionUtils + .asCollection(i.next().iterator())); + } + return l.iterator(); + } + + /** + * @return false + */ + public boolean isFilesystemOnly() { + if (isReference()) { + return ((Archives) getCheckedRef()).isFilesystemOnly(); + } + dieOnCircularReference(); + return false; + } + + /** + * Overrides the base version. + * @param r the Reference to set. + */ + @Override + public void setRefid(final Reference r) { + if (zips.getResourceCollections().size() > 0 + || tars.getResourceCollections().size() > 0) { + throw tooManyAttributes(); + } + super.setRefid(r); + } + + /** + * Implement clone. The nested resource collections are cloned as + * well. + * @return a cloned instance. + */ + @Override + public Object clone() { + try { + final Archives a = (Archives) super.clone(); + a.zips = (Union) zips.clone(); + a.tars = (Union) tars.clone(); + return a; + } catch (final CloneNotSupportedException e) { + throw new BuildException(e); + } + } + + // TODO this is a pretty expensive operation and so the result + // should be cached. + /** + * Turns all nested resources into corresponding ArchiveFileSets + * and returns an iterator over the collected archives. + */ + protected Iterator<ArchiveFileSet> grabArchives() { + final List<ArchiveFileSet> l = new LinkedList<ArchiveFileSet>(); + for (final Resource r : zips) { + l.add(configureArchive(new ZipFileSet(), r)); + } + for (final Resource r : tars) { + l.add(configureArchive(new TarFileSet(), r)); + } + return l.iterator(); + } + + /** + * Configures the archivefileset based on this type's settings, + * set the source. + */ + protected ArchiveFileSet configureArchive(final ArchiveFileSet afs, + final Resource src) { + afs.setProject(getProject()); + afs.setSrcResource(src); + return afs; + } + + /** + * Overrides the version of DataType to recurse on all DataType + * child elements that may have been added. + * @param stk the stack of data types to use (recursively). + * @param p the project to use to dereference the references. + * @throws BuildException on error. + */ + @Override + protected synchronized void dieOnCircularReference(final Stack<Object> stk, final Project p) + throws BuildException { + if (isChecked()) { + return; + } + if (isReference()) { + super.dieOnCircularReference(stk, p); + } else { + pushAndInvokeCircularReferenceCheck(zips, stk, p); + pushAndInvokeCircularReferenceCheck(tars, stk, p); + setChecked(true); + } + } + +} |