Author: ajamtli
Date: 2006-05-19 12:37:49 +0200 (Fri, 19 May 2006)
New Revision: 2941
Added:
trunk/src/java/no/schibstedsok/front/searchportal/view/velocity/RemovePrefixDirective.java
Log:
Velocity directive to strip away the given prefix from a string.
Added:
trunk/src/java/no/schibstedsok/front/searchportal/view/velocity/RemovePrefixDirective.java
===================================================================
---
trunk/src/java/no/schibstedsok/front/searchportal/view/velocity/RemovePrefixDirective.java
(rev 0)
+++
trunk/src/java/no/schibstedsok/front/searchportal/view/velocity/RemovePrefixDirective.java
2006-05-19 10:37:49 UTC (rev 2941)
@@ -0,0 +1,78 @@
+package no.schibstedsok.front.searchportal.view.velocity;
+
+import java.io.IOException;
+
+import java.io.Writer;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.velocity.context.InternalContextAdapter;
+import org.apache.velocity.exception.MethodInvocationException;
+import org.apache.velocity.exception.ParseErrorException;
+import org.apache.velocity.exception.ResourceNotFoundException;
+import org.apache.velocity.runtime.directive.Directive;
+import org.apache.velocity.runtime.parser.Token;
+import org.apache.velocity.runtime.parser.node.Node;
+
+/**
+ * A velocity directive to remove a prefix if it exists.
+ *
+ * <code>
+ * #removePrefix('this is the string to be checked', 'prefix to be removed')
+ * </code>
+ *
+ *
+ * @author ajamtli
+ */
+public final class RemovePrefixDirective extends Directive {
+
+ /** Logger. */
+ private static transient Log log =
LogFactory.getLog(RemovePrefixDirective.class);
+
+ /** Name of directive. */
+ private static final String NAME = "removePrefix";
+
+ /**
+ * [EMAIL PROTECTED]
+ */
+ public String getName() {
+ return NAME;
+ }
+
+ /**
+ * [EMAIL PROTECTED]
+ */
+ public int getType() {
+ return LINE;
+ }
+
+ /**
+ * [EMAIL PROTECTED]
+ */
+ public boolean render(final InternalContextAdapter context, final Writer
writer, final Node node)
+ throws IOException, ResourceNotFoundException,
ParseErrorException, MethodInvocationException {
+ if (node.jjtGetNumChildren() != 2) {
+ rsvc.error("#" + getName() + " - wrong number of arguments");
+ return false;
+ }
+
+ final String s = node.jjtGetChild(0).value(context).toString();
+ final String prefix = node.jjtGetChild(1).value(context).toString();
+
+ String returnString = s;
+ if (s.startsWith(prefix)) {
+ returnString = s.substring(prefix.length());
+ returnString = returnString.trim();
+ }
+
+ writer.write(returnString);
+
+ final Token lastToken = node.getLastToken();
+
+ if (lastToken.image.endsWith("\n")) {
+ writer.write("\n");
+ }
+
+ return true;
+ }
+}
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