X-Git-Url: http://git.phpeclipse.com

diff --git a/net.sourceforge.phpeclipse.externaltools/src/net/sourceforge/phpdt/externaltools/variable/ResourceExpander.java b/net.sourceforge.phpeclipse.externaltools/src/net/sourceforge/phpdt/externaltools/variable/ResourceExpander.java
new file mode 100644
index 0000000..fe5cfa8
--- /dev/null
+++ b/net.sourceforge.phpeclipse.externaltools/src/net/sourceforge/phpdt/externaltools/variable/ResourceExpander.java
@@ -0,0 +1,124 @@
+package net.sourceforge.phpdt.externaltools.variable;
+
+/**********************************************************************
+Copyright (c) 2002 IBM Corp. and others. All rights reserved.
+This file is made available under the terms of the Common Public License v1.0
+which accompanies this distribution, and is available at
+http://www.eclipse.org/legal/cpl-v10.html
+�
+Contributors:
+**********************************************************************/
+
+import net.sourceforge.phpdt.externaltools.model.IExternalToolConstants;
+
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.resources.IWorkspaceRoot;
+import org.eclipse.core.resources.ResourcesPlugin;
+import org.eclipse.core.runtime.IPath;
+
+/**
+ * Expands a resource type variable into the desired
+ * result format.
+ * <p>
+ * This class is not intended to be extended by clients.
+ * </p>
+ */
+public class ResourceExpander implements IVariableLocationExpander, IVariableResourceExpander, IVariableTextExpander {
+
+	/**
+	 * Create an instance
+	 */
+	public ResourceExpander() {
+		super();
+	}
+
+	/**
+	 * Expands the variable to a resource.
+	 */
+	/*package*/ IResource expand(String varValue, ExpandVariableContext context) {
+		if (varValue != null && varValue.length() > 0) {
+			return expandToMember(varValue);
+		} else {
+			return expandUsingContext(context);
+		}
+	}
+	
+	/**
+	 * Expands using the current context information.
+	 * By default, return the selected resource of the
+	 * context.
+	 */
+	/*package*/ IResource expandUsingContext(ExpandVariableContext context) {
+		return context.getSelectedResource();
+	}
+	
+	/**
+	 * Expands the variable value to a resource. The value
+	 * will not be <code>null</code> nor empty. By default,
+	 * lookup the member from the workspace root.
+	 */
+	/*package*/ IResource expandToMember(String varValue) {
+		return getWorkspaceRoot().findMember(varValue);
+	}
+	
+	/* (non-Javadoc)
+	 * Method declared on IVariableLocationExpander.
+	 */
+	public IPath getPath(String varTag, String varValue, ExpandVariableContext context) {
+		IResource resource = expand(varValue, context);
+		if (resource != null) {
+			if (isPathVariable(varTag)) {
+				return resource.getFullPath();
+			} else {
+				return resource.getLocation();
+			}
+		} else {
+			return null;
+		}
+	}
+	
+	/**
+	 * Returns whether the given variable tag is a known path
+	 * variable tag. Path variable tags represent variables that
+	 * expand to paths relative to the workspace root.
+	 */
+	private boolean isPathVariable(String varTag) {
+		return varTag.equals(IExternalToolConstants.VAR_CONTAINER_PATH) ||
+				varTag.equals(IExternalToolConstants.VAR_PROJECT_PATH) ||
+				varTag.equals(IExternalToolConstants.VAR_RESOURCE_PATH);
+	}
+
+	/* (non-Javadoc)
+	 * Method declared on IVariableResourceExpander.
+	 */
+	public IResource[] getResources(String varTag, String varValue, ExpandVariableContext context) {
+		IResource resource = expand(varValue, context);
+		if (resource != null) {
+			return new IResource[] {resource};
+		} else {
+			return null;
+		}
+	}
+	
+	/**
+	 * Returns the workspace root resource.
+	 */
+	protected final IWorkspaceRoot getWorkspaceRoot() {
+		return ResourcesPlugin.getWorkspace().getRoot();
+	}
+	
+	/**
+	 * Returns a string representation of the path to a file or directory
+	 * for the given variable tag and value or <code>null</code>.
+	 * 
+	 * @see IVariableTextExpander#getText(String, String, ExpandVariableContext)
+	 */
+	public String getText(String varTag, String varValue, ExpandVariableContext context) {
+		IPath path= getPath(varTag, varValue, context);
+		if (path != null) {
+			return path.toString();
+		}
+		return null;
+	}
+
+}