diff options
Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/Resources.java')
-rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/Resources.java | 274 |
1 files changed, 0 insertions, 274 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/Resources.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/Resources.java deleted file mode 100644 index 1dd888d4..00000000 --- a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/types/resources/Resources.java +++ /dev/null @@ -1,274 +0,0 @@ -/* - * 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.io.File; -import java.util.AbstractCollection; -import java.util.Collection; -import java.util.Collections; -import java.util.Iterator; -import java.util.List; -import java.util.NoSuchElementException; -import java.util.Stack; -import java.util.Vector; - -import org.apache.tools.ant.BuildException; -import org.apache.tools.ant.Project; -import org.apache.tools.ant.types.DataType; -import org.apache.tools.ant.types.Resource; -import org.apache.tools.ant.types.ResourceCollection; -import org.apache.tools.ant.util.CollectionUtils; - -/** - * Generic ResourceCollection: Either stores nested ResourceCollections, - * making no attempt to remove duplicates, or references another ResourceCollection. - * @since Ant 1.7 - */ -public class Resources extends DataType implements ResourceCollection { - /** static empty ResourceCollection */ - public static final ResourceCollection NONE = new ResourceCollection() { - public boolean isFilesystemOnly() { - return true; - } - public Iterator<Resource> iterator() { - return EMPTY_ITERATOR; - } - public int size() { - return 0; - } - }; - - /** static empty Iterator */ - public static final Iterator<Resource> EMPTY_ITERATOR = new Iterator<Resource>() { - public Resource next() { - throw new NoSuchElementException(); - } - public boolean hasNext() { - return false; - } - public void remove() { - throw new UnsupportedOperationException(); - } - }; - - private class MyCollection extends AbstractCollection<Resource> { - private Collection<Resource> cached; - - MyCollection() { - } - public int size() { - return getCache().size(); - } - public Iterator<Resource> iterator() { - return getCache().iterator(); - } - private synchronized Collection<Resource> getCache() { - Collection<Resource> coll = cached; - if (coll == null) { - coll = CollectionUtils.asCollection(new MyIterator()); - if (cache) { - cached = coll; - } - } - return coll; - } - private class MyIterator implements Iterator<Resource> { - private Iterator<ResourceCollection> rci = getNested().iterator(); - private Iterator<Resource> ri = null; - - public boolean hasNext() { - boolean result = ri != null && ri.hasNext(); - while (!result && rci.hasNext()) { - ri = ((ResourceCollection) rci.next()).iterator(); - result = ri.hasNext(); - } - return result; - } - public Resource next() { - if (!hasNext()) { - throw new NoSuchElementException(); - } - return ri.next(); - } - public void remove() { - throw new UnsupportedOperationException(); - } - } - } - - private Vector<ResourceCollection> rc; - private Collection<Resource> coll; - private boolean cache = false; - - /** - * Create a new Resources. - */ - public Resources() { - } - - /** - * Create a new Resources. - * @since Ant 1.8 - */ - public Resources(Project project) { - setProject(project); - } - - /** - * Set whether to cache collections. - * @param b boolean cache flag. - * @since Ant 1.8.0 - */ - public synchronized void setCache(boolean b) { - cache = b; - } - - /** - * Add a ResourceCollection. - * @param c the ResourceCollection to add. - */ - public synchronized void add(ResourceCollection c) { - if (isReference()) { - throw noChildrenAllowed(); - } - if (c == null) { - return; - } - if (rc == null) { - rc = new Vector<ResourceCollection>(); - } - rc.add(c); - invalidateExistingIterators(); - coll = null; - setChecked(false); - } - - /** - * Fulfill the ResourceCollection contract. - * @return an Iterator of Resources. - */ - public synchronized Iterator<Resource> iterator() { - if (isReference()) { - return getRef().iterator(); - } - validate(); - return new FailFast(this, coll.iterator()); - } - - /** - * Fulfill the ResourceCollection contract. - * @return number of elements as int. - */ - public synchronized int size() { - if (isReference()) { - return getRef().size(); - } - validate(); - return coll.size(); - } - - /** - * Fulfill the ResourceCollection contract. - * @return true if all Resources represent files. - */ - public boolean isFilesystemOnly() { - if (isReference()) { - return getRef().isFilesystemOnly(); - } - validate(); - - for (Iterator<ResourceCollection> i = getNested().iterator(); i.hasNext();) { - if (!i.next().isFilesystemOnly()) { - return false; - } - } - return true; - } - - /** - * Format this <code>Resources</code> as a String. - * @return a descriptive <code>String</code>. - */ - public synchronized String toString() { - if (isReference()) { - return getCheckedRef().toString(); - } - validate(); - if (coll == null || coll.isEmpty()) { - return ""; - } - StringBuffer sb = new StringBuffer(); - for (Resource r : coll) { - if (sb.length() > 0) { - sb.append(File.pathSeparatorChar); - } - sb.append(r); - } - return sb.toString(); - } - - /** - * 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. - */ - protected void dieOnCircularReference(Stack<Object> stk, Project p) - throws BuildException { - if (isChecked()) { - return; - } - if (isReference()) { - super.dieOnCircularReference(stk, p); - } else { - for (ResourceCollection resourceCollection : getNested()) { - if (resourceCollection instanceof DataType) { - pushAndInvokeCircularReferenceCheck((DataType) resourceCollection, stk, p); - } - } - setChecked(true); - } - } - - /** - * Allow subclasses to notify existing Iterators they have experienced concurrent modification. - */ - protected void invalidateExistingIterators() { - FailFast.invalidate(this); - } - - /** - * Resolves references, allowing any ResourceCollection. - * @return the referenced ResourceCollection. - */ - private ResourceCollection getRef() { - return (ResourceCollection) getCheckedRef( - ResourceCollection.class, "ResourceCollection"); - } - - private synchronized void validate() { - dieOnCircularReference(); - coll = (coll == null) ? new MyCollection() : coll; - } - - private synchronized List<ResourceCollection> getNested() { - return rc == null ? Collections.<ResourceCollection> emptyList() : rc; - } -} |