/*******************************************************************************
 * Copyright (c) 2005-2008 Polarion Software.
 * 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:
 *    Alexander Gurov - Initial API and implementation
 *******************************************************************************/

package org.eclipse.team.svn.ui.verifier;

import org.eclipse.swt.widgets.Control;
import org.eclipse.team.svn.ui.SVNUIMessages;

/**
 * SVN resource name verifier
 * 
 * @author Alexander Gurov
 */
public class ResourceNameVerifier extends AbstractFormattedVerifier {
    protected static String ERROR_MESSAGE;
    
    protected boolean allowMultipart;
    
    public ResourceNameVerifier(String fieldName, boolean allowMultipart) {
        super(fieldName);
        ResourceNameVerifier.ERROR_MESSAGE = SVNUIMessages.format(SVNUIMessages.Verifier_ResourceName, new String[] {AbstractFormattedVerifier.FIELD_NAME});
        this.allowMultipart = allowMultipart;
    }

    protected String getErrorMessageImpl(Control input) {
        String fileName = this.getText(input);
        if (fileName.length() != 0 && !this.isValidSegment(fileName)) {
            return ResourceNameVerifier.ERROR_MESSAGE;
        }
        return null;
    }

	public boolean isValidSegment(String segment) {
		int size = segment.length();
		boolean nameCharactersFound = false;
		for (int i = 0; i < size; i++) {
			char c = segment.charAt(i);
			if (c == '?' || c == '*' || c == ':' || !this.allowMultipart && (c == '\\' || c == '/')) {
				return false;
			}
			else if (c != '\\' && c != '/' && c != '.') {
				nameCharactersFound = true;
			}
		}
		return nameCharactersFound;
	}

	protected String getWarningMessageImpl(Control input) {
        return null;
    }

}