/*
* 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.helper;
import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Vector;
import org.xml.sax.Locator;
import org.xml.sax.Attributes;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.Target;
import org.apache.tools.ant.Location;
import org.apache.tools.ant.RuntimeConfigurable;
/**
* Context information for the ant processing.
*
*/
public class AntXMLContext {
/** The project to configure. */
private Project project;
/** The configuration file to parse. */
private File buildFile;
/** Vector with all the targets, in the order they are
* defined. Project maintains a Hashtable, which is not ordered.
* This will allow description to know the original order.
*/
private Vector targetVector = new Vector();
/**
* Parent directory of the build file. Used for resolving entities
* and setting the project's base directory.
*/
private File buildFileParent;
/** Name of the current project */
private String currentProjectName;
/**
* Locator for the configuration file parser.
* Used for giving locations of errors etc.
*/
private Locator locator;
/**
* Target that all other targets will depend upon implicitly.
*
* <p>This holds all tasks and data type definitions that have
* been placed outside of targets.</p>
*/
private Target implicitTarget = new Target();
/** Current target ( no need for a stack as the processing model
allows only one level of target ) */
private Target currentTarget = null;
/** The stack of RuntimeConfigurable2 wrapping the
objects.
*/
private Vector wStack = new Vector();
/**
* Indicates whether the project tag attributes are to be ignored
* when processing a particular build file.
*/
private boolean ignoreProjectTag = false;
/** Keeps track of prefix -> uri mapping during parsing */
private Map prefixMapping = new HashMap();
/** Keeps track of targets in files */
private Map currentTargets = null;
/**
* constructor
* @param project the project to which this antxml context belongs to
*/
public AntXMLContext(Project project) {
this.project = project;
implicitTarget.setProject(project);
implicitTarget.setName("");
targetVector.addElement(implicitTarget);
}
/**
* sets the build file to which the XML context belongs
* @param buildFile ant build file
*/
public void setBuildFile(File buildFile) {
this.buildFile = buildFile;
this.buildFileParent = new File(buildFile.getParent());
implicitTarget.setLocation(new Location(buildFile.getAbsolutePath()));
}
/**
* find out the build file
* @return the build file to which the xml context belongs
*/
public File getBuildFile() {
return buildFile;
}
/**
* find out the parent build file of this build file
* @return the parent build file of this build file
*/
public File getBuildFileParent() {
return buildFileParent;
}
/**
* find out the project to which this antxml context belongs
* @return project
*/
public Project getProject() {
return project;
}
/**
* find out the current project name
* @return current project name
*/
public String getCurrentProjectName() {
return currentProjectName;
}
/**
* set the name of the current project
* @param name name of the current project
*/
public void setCurrentProjectName(String name) {
this.currentProjectName = name;
}
/**
* get the current runtime configurable wrapper
* can return null
* @return runtime configurable wrapper
*/
public RuntimeConfigurable currentWrapper() {
if (wStack.size() < 1) {
return null;
}
return (RuntimeConfigurable) wStack.elementAt(wStack.size() - 1);
}
/**
* get the runtime configurable wrapper of the parent project
* can return null
* @return runtime configurable wrapper of the parent project
*/
public RuntimeConfigurable parentWrapper() {
if (wStack.size() < 2) {
return null;
}
return (RuntimeConfigurable) wStack.elementAt(wStack.size() - 2);
}
/**
* add a runtime configurable wrapper to the internal stack
* @param wrapper runtime configurable wrapper
*/
public void pushWrapper(RuntimeConfigurable wrapper) {
wStack.addElement(wrapper);
}
/**
* remove a runtime configurable wrapper from the stack
*/
public void popWrapper() {
if (wStack.size() > 0) {
wStack.removeElementAt(wStack.size() - 1);
}
}
/**
* access the stack of wrappers
* @return the stack of wrappers
*/
public Vector getWrapperStack() {
return wStack;
}
/**
* add a new target
* @param target target to add
*/
public void addTarget(Target target) {
targetVector.addElement(target);
currentTarget = target;
}
/**
* get the current target
* @return current target
*/
public Target getCurrentTarget() {
return currentTarget;
}
/**
* get the implicit target
* @return implicit target
*/
public Target getImplicitTarget() {
return implicitTarget;
}
/**
* sets the current target
* @param target current target
*/
public void setCurrentTarget(Target target) {
this.currentTarget = target;
}
/**
* sets the implicit target
* @param target the implicit target
*/
public void setImplicitTarget(Target target) {
this.implicitTarget = target;
}
/**
* access the vector of targets
* @return vector of targets
*/
public Vector getTargets() {
return targetVector;
}
/**
* Scans an attribute list for the <code>id</code> attribute and
* stores a reference to the target object in the project if an
* id is found.
* <p>
* This method was moved out of the configure method to allow
* it to be executed at parse time.
* @param element the current element
* @param attr attributes of the current element
*/
public void configureId(Object element, Attributes attr) {
String id = attr.getValue("id");
if (id != null) {
project.addIdReference(id, element);
}
}
/**
* access the locator
* @return locator
*/
public Locator getLocator() {
return locator;
}
/**
* sets the locator
* @param locator locator
*/
public void setLocator(Locator locator) {
this.locator = locator;
}
/**
* tells whether the project tag is being ignored
* @return whether the project tag is being ignored
*/
public boolean isIgnoringProjectTag() {
return ignoreProjectTag;
}
/**
* sets the flag to ignore the project tag
* @param flag to ignore the project tag
*/
public void setIgnoreProjectTag(boolean flag) {
this.ignoreProjectTag = flag;
}
/**
* Called during parsing, stores the prefix to uri mapping.
*
* @param prefix a namespace prefix
* @param uri a namespace uri
*/
public void startPrefixMapping(String prefix, String uri) {
List list = (List) prefixMapping.get(prefix);
if (list == null) {
list = new ArrayList();
prefixMapping.put(prefix, list);
}
list.add(uri);
}
/**
* End of prefix to uri mapping.
*
* @param prefix the namespace prefix
*/
public void endPrefixMapping(String prefix) {
List list = (List) prefixMapping.get(prefix);
if (list == null || list.size() == 0) {
return; // Should not happen
}
list.remove(list.size() - 1);
}
/**
* prefix to namespace uri mapping
*
* @param prefix the prefix to map
* @return the uri for this prefix, null if not present
*/
public String getPrefixMapping(String prefix) {
List list = (List) prefixMapping.get(prefix);
if (list == null || list.size() == 0) {
return null;
}
return (String) list.get(list.size() - 1);
}
/**
* Get the targets in the current source file.
* @return the current targets.
*/
public Map getCurrentTargets() {
return currentTargets;
}
/**
* Set the map of the targets in the current source file.
* @param currentTargets a map of targets.
*/
public void setCurrentTargets(Map currentTargets) {
this.currentTargets = currentTargets;
}
}
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