1 files changed, 74 insertions, 0 deletions
diff --git a/bundles/org.eclipse.equinox.bidi/src/org/eclipse/equinox/bidi/internal/consumable/StructuredTextEmail.java b/bundles/org.eclipse.equinox.bidi/src/org/eclipse/equinox/bidi/internal/consumable/StructuredTextEmail.java
new file mode 100644
index 000000000..c9433f62d
--- /dev/null
+++ b/bundles/org.eclipse.equinox.bidi/src/org/eclipse/equinox/bidi/internal/consumable/StructuredTextEmail.java
@@ -0,0 +1,74 @@
+/*******************************************************************************
+ * Copyright (c) 2010, 2011 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ ******************************************************************************/
+package org.eclipse.equinox.bidi.internal.consumable;
+
+import org.eclipse.equinox.bidi.advanced.IStructuredTextExpert;
+import org.eclipse.equinox.bidi.custom.StructuredTextCharTypes;
+import org.eclipse.equinox.bidi.internal.StructuredTextDelimsEsc;
+
+/**
+ *  Handler adapted to processing e-mail addresses.
+ */
+public class StructuredTextEmail extends StructuredTextDelimsEsc {
+	static final byte L = Character.DIRECTIONALITY_LEFT_TO_RIGHT;
+	static final byte R = Character.DIRECTIONALITY_RIGHT_TO_LEFT;
+	static final byte AL = Character.DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC;
+
+	public StructuredTextEmail() {
+		super("<>.:,;@"); //$NON-NLS-1$
+	}
+
+	public int getDirection(IStructuredTextExpert expert, String text) {
+		return getDirection(expert, text, new StructuredTextCharTypes(expert, text));
+	}
+
+	/**
+	 *  @return {@link IStructuredTextExpert#DIR_RTL DIR_RTL} if the following
+	 *          conditions are satisfied:
+	 *          <ul>
+	 *            <li>The current locale (as expressed by the environment
+	 *                language) is Arabic.</li>
+	 *            <li>The domain part of the email address contains
+	 *                at least one RTL character.</li>
+	 *          </ul>
+	 *          Otherwise, returns {@link IStructuredTextExpert#DIR_LTR DIR_LTR}.
+	 */
+	public int getDirection(IStructuredTextExpert expert, String text, StructuredTextCharTypes charTypes) {
+		String language = expert.getEnvironment().getLanguage();
+		if (!language.equals("ar")) //$NON-NLS-1$
+			return IStructuredTextExpert.DIR_LTR;
+		int domainStart;
+		domainStart = text.indexOf('@');
+		if (domainStart < 0)
+			domainStart = 0;
+		for (int i = domainStart; i < text.length(); i++) {
+			byte charType = charTypes.getBidiTypeAt(i);
+			if (charType == AL || charType == R)
+				return IStructuredTextExpert.DIR_RTL;
+		}
+		return IStructuredTextExpert.DIR_LTR;
+	}
+
+	/**
+	 *  @return 2 as number of special cases handled by this handler.
+	 */
+	public int getSpecialsCount(IStructuredTextExpert expert) {
+		return 2;
+	}
+
+	/**
+	 *  @return parentheses and quotation marks as delimiters.
+	 */
+	protected String getDelimiters() {
+		return "()\"\""; //$NON-NLS-1$
+	}
+
+}