1 files changed, 73 insertions, 0 deletions
diff --git a/org.eclipse.ui.externaltools/External Tools Base/org/eclipse/ui/externaltools/internal/variables/BuildProjectResolver.java b/org.eclipse.ui.externaltools/External Tools Base/org/eclipse/ui/externaltools/internal/variables/BuildProjectResolver.java
new file mode 100644
index 000000000..ac6fee703
--- /dev/null
+++ b/org.eclipse.ui.externaltools/External Tools Base/org/eclipse/ui/externaltools/internal/variables/BuildProjectResolver.java
@@ -0,0 +1,73 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2004 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are 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:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.ui.externaltools.internal.variables;
+
+import java.text.MessageFormat;
+import org.eclipse.core.resources.IProject;
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Path;
+import org.eclipse.core.runtime.Status;
+import org.eclipse.core.variables.IDynamicVariable;
+import org.eclipse.core.variables.IDynamicVariableResolver;
+import org.eclipse.ui.externaltools.internal.model.ExternalToolBuilder;
+import org.eclipse.ui.externaltools.internal.model.IExternalToolConstants;
+
+
+public class BuildProjectResolver implements IDynamicVariableResolver {
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.debug.internal.core.stringsubstitution.IContextVariableResolver#resolveValue(org.eclipse.debug.internal.core.stringsubstitution.IContextVariable, java.lang.String)
+	 */
+	public String resolveValue(IDynamicVariable variable, String argument) throws CoreException {
+		IResource resource= ExternalToolBuilder.getBuildProject();
+		if (argument != null && resource != null) {
+			resource = ((IProject)resource).findMember(new Path(argument));
+		}
+		if (resource != null && resource.exists()) {
+			return resource.getLocation().toOSString();
+		}
+		abort(MessageFormat.format(VariableMessages.getString("BuildProjectResolver.3"), new String[]{getReferenceExpression(variable, argument)}), null);	 //$NON-NLS-1$
+		return null;
+	}
+	
+	/**
+	 * Throws an exception with the given message and underlying exception.
+	 *  
+	 * @param message exception message
+	 * @param exception underlying exception or <code>null</code> 
+	 * @throws CoreException
+	 */
+	protected void abort(String message, Throwable exception) throws CoreException {
+		throw new CoreException(new Status(IStatus.ERROR, IExternalToolConstants.PLUGIN_ID, IExternalToolConstants.ERR_INTERNAL_ERROR, message, exception));
+	}
+	
+	/**
+	 * Returns an expression used to reference the given variable and optional argument.
+	 * For example, <code>${var_name:arg}</code>.
+	 * 
+	 * @param variable referenced variable
+	 * @param argument referenced argument or <code>null</code>
+	 * @return vraiable reference expression
+	 */
+	protected String getReferenceExpression(IDynamicVariable variable, String argument) {
+		StringBuffer reference = new StringBuffer();
+		reference.append("${"); //$NON-NLS-1$
+		reference.append(variable.getName());
+		if (argument != null) {
+			reference.append(":"); //$NON-NLS-1$
+			reference.append(argument);
+		}
+		reference.append("}"); //$NON-NLS-1$
+		return reference.toString();
+	}
+}