|
|
|
@@ -0,0 +1,210 @@ |
|
|
|
/* |
|
|
|
* Copyright 2005 The Apache Software Foundation |
|
|
|
* |
|
|
|
* 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 org.apache.tools.ant.types.resources; |
|
|
|
|
|
|
|
import java.io.IOException; |
|
|
|
import java.io.InputStream; |
|
|
|
|
|
|
|
import org.apache.tools.ant.util.FileUtils; |
|
|
|
import org.apache.tools.ant.types.Path; |
|
|
|
import org.apache.tools.ant.types.Resource; |
|
|
|
import org.apache.tools.ant.types.Reference; |
|
|
|
|
|
|
|
/** |
|
|
|
* A Resource representation of something loadable via a Java classloader. |
|
|
|
* @since Ant 1.7 |
|
|
|
*/ |
|
|
|
public class JavaResource extends Resource { |
|
|
|
|
|
|
|
private Path classpath; |
|
|
|
private Reference loader; |
|
|
|
|
|
|
|
/** |
|
|
|
* Default constructor. |
|
|
|
*/ |
|
|
|
public JavaResource() { |
|
|
|
} |
|
|
|
|
|
|
|
/** |
|
|
|
* Construct a new JavaResource using the specified name and |
|
|
|
* classpath. |
|
|
|
* |
|
|
|
* @param name the resource name. |
|
|
|
* @param path the classpath. |
|
|
|
*/ |
|
|
|
public JavaResource(String name, Path path) { |
|
|
|
setName(name); |
|
|
|
classpath = path; |
|
|
|
} |
|
|
|
|
|
|
|
/** |
|
|
|
* Set the classpath to use when looking up a resource. |
|
|
|
* @param classpath to add to any existing classpath |
|
|
|
*/ |
|
|
|
public void setClasspath(Path classpath) { |
|
|
|
checkAttributesAllowed(); |
|
|
|
if (this.classpath == null) { |
|
|
|
this.classpath = classpath; |
|
|
|
} else { |
|
|
|
this.classpath.append(classpath); |
|
|
|
} |
|
|
|
} |
|
|
|
|
|
|
|
/** |
|
|
|
* Add a classpath to use when looking up a resource. |
|
|
|
* @return The classpath to be configured |
|
|
|
*/ |
|
|
|
public Path createClasspath() { |
|
|
|
checkChildrenAllowed(); |
|
|
|
if (this.classpath == null) { |
|
|
|
this.classpath = new Path(getProject()); |
|
|
|
} |
|
|
|
return this.classpath.createPath(); |
|
|
|
} |
|
|
|
|
|
|
|
/** |
|
|
|
* Set the classpath to use when looking up a resource, |
|
|
|
* given as reference to a <path> defined elsewhere |
|
|
|
* @param r The reference value |
|
|
|
*/ |
|
|
|
public void setClasspathRef(Reference r) { |
|
|
|
checkAttributesAllowed(); |
|
|
|
createClasspath().setRefid(r); |
|
|
|
} |
|
|
|
|
|
|
|
/** |
|
|
|
* get the classpath used by this <code>LoadProperties</code>. |
|
|
|
* @return The classpath |
|
|
|
*/ |
|
|
|
public Path getClasspath() { |
|
|
|
return isReference() |
|
|
|
? ((JavaResource) getCheckedRef()).getClasspath() : classpath; |
|
|
|
} |
|
|
|
|
|
|
|
/** |
|
|
|
* Use the reference to locate the loader. If the loader is not |
|
|
|
* found, taskdef will use the specified classpath and register it |
|
|
|
* with the specified name. |
|
|
|
* |
|
|
|
* This allow multiple taskdef/typedef to use the same class loader, |
|
|
|
* so they can be used together. It eliminate the need to |
|
|
|
* put them in the CLASSPATH. |
|
|
|
* |
|
|
|
* @param r the reference to locate the loader. |
|
|
|
*/ |
|
|
|
public void setLoaderRef(Reference r) { |
|
|
|
checkAttributesAllowed(); |
|
|
|
loader = r; |
|
|
|
} |
|
|
|
|
|
|
|
/** |
|
|
|
* Overrides the super version. |
|
|
|
* @param r the Reference to set. |
|
|
|
*/ |
|
|
|
public void setRefid(Reference r) { |
|
|
|
if (loader != null || classpath != null) { |
|
|
|
throw tooManyAttributes(); |
|
|
|
} |
|
|
|
super.setRefid(r); |
|
|
|
} |
|
|
|
|
|
|
|
/** |
|
|
|
* Learn whether this file exists. |
|
|
|
* @return true if this resource exists. |
|
|
|
*/ |
|
|
|
public boolean isExists() { |
|
|
|
InputStream is = null; |
|
|
|
try { |
|
|
|
return isReference() ? ((Resource) getCheckedRef()).isExists() |
|
|
|
: (is = getInputStream()) != null; |
|
|
|
} catch (IOException ex) { |
|
|
|
return false; |
|
|
|
} finally { |
|
|
|
FileUtils.close(is); |
|
|
|
} |
|
|
|
} |
|
|
|
|
|
|
|
/** |
|
|
|
* Return an InputStream for reading the contents of this Resource. |
|
|
|
* @return an InputStream object. |
|
|
|
* @throws IOException if an error occurs. |
|
|
|
*/ |
|
|
|
public InputStream getInputStream() throws IOException { |
|
|
|
if (isReference()) { |
|
|
|
return ((Resource) getCheckedRef()).getInputStream(); |
|
|
|
} |
|
|
|
ClassLoader cl = null; |
|
|
|
if (loader != null) { |
|
|
|
cl = (ClassLoader) loader.getReferencedObject(); |
|
|
|
} |
|
|
|
if (cl == null) { |
|
|
|
if (getClasspath() != null) { |
|
|
|
cl = getProject().createClassLoader(classpath); |
|
|
|
} else { |
|
|
|
cl = JavaResource.class.getClassLoader(); |
|
|
|
} |
|
|
|
if (loader != null && cl != null) { |
|
|
|
getProject().addReference(loader.getRefId(), cl); |
|
|
|
} |
|
|
|
} |
|
|
|
|
|
|
|
return cl == null ? ClassLoader.getSystemResourceAsStream(getName()) |
|
|
|
: cl.getResourceAsStream(getName()); |
|
|
|
} |
|
|
|
|
|
|
|
/** |
|
|
|
* Compare this JavaResource to another Resource. |
|
|
|
* @param another the other Resource against which to compare. |
|
|
|
* @return a negative integer, zero, or a positive integer as this |
|
|
|
* JavaResource is less than, equal to, or greater than the |
|
|
|
* specified Resource. |
|
|
|
*/ |
|
|
|
public int compareTo(Object another) { |
|
|
|
if (isReference()) { |
|
|
|
return ((Comparable) getCheckedRef()).compareTo(another); |
|
|
|
} |
|
|
|
if (another.getClass().equals(getClass())) { |
|
|
|
JavaResource otherjr = (JavaResource) another; |
|
|
|
if (!getName().equals(otherjr.getName())) { |
|
|
|
return getName().compareTo(otherjr.getName()); |
|
|
|
} |
|
|
|
if (loader != otherjr.loader) { |
|
|
|
if (loader == null) { |
|
|
|
return -1; |
|
|
|
} |
|
|
|
if (otherjr.loader == null) { |
|
|
|
return 1; |
|
|
|
} |
|
|
|
return loader.getRefId().compareTo(otherjr.loader.getRefId()); |
|
|
|
} |
|
|
|
Path p = getClasspath(); |
|
|
|
Path op = otherjr.getClasspath(); |
|
|
|
if (p != op) { |
|
|
|
if (p == null) { |
|
|
|
return -1; |
|
|
|
} |
|
|
|
if (op == null) { |
|
|
|
return 1; |
|
|
|
} |
|
|
|
return p.toString().compareTo(op.toString()); |
|
|
|
} |
|
|
|
return 0; |
|
|
|
} |
|
|
|
return super.compareTo(another); |
|
|
|
} |
|
|
|
|
|
|
|
} |
Stefan Bodewig