/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.portal.mop.management.binding.xml;
import java.util.Locale;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.xml.XMLConstants;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamException;
import org.exoplatform.portal.config.model.LocalizedString;
import org.gatein.common.xml.stax.navigator.StaxNavUtils;
import org.gatein.common.xml.stax.writer.StaxWriter;
import org.staxnav.StaxNavException;
import org.staxnav.StaxNavigator;
/**
* @author <a href="mailto:nscavell@redhat.com">Nick Scavelli</a>
* @version $Revision$
*/
class Utils {
private static final Pattern XMLLANG_PATTERN = Pattern.compile("^([a-zA-Z]{2})(?:-([a-zA-Z]{2}))?$");
public static <N> void writeGateinObjectsNamespace(StaxWriter<N> writer) throws XMLStreamException {
String gatein_object_ns = Namespace.CURRENT.getUri();
String location = new StringBuilder().append(gatein_object_ns).append(" ").append(gatein_object_ns).toString();
writer.writeDefaultNamespace(gatein_object_ns);
writer.writeNamespace("xsi", XMLConstants.W3C_XML_SCHEMA_INSTANCE_NS_URI);
writer.writeAttribute(new QName(XMLConstants.W3C_XML_SCHEMA_INSTANCE_NS_URI, "schemaLocation"), location);
}
public static <N> LocalizedString parseLocalizedString(StaxNavigator<N> navigator) throws StaxNavException {
String attribute = navigator.getAttribute(new QName(XMLConstants.XML_NS_URI, "lang", XMLConstants.XML_NS_PREFIX));
if (attribute == null) {
attribute = navigator.getAttribute("lang");
}
Locale lang = null;
if (attribute != null) {
Matcher matcher = XMLLANG_PATTERN.matcher(attribute);
if (matcher.matches()) {
String langISO = matcher.group(1);
String countryISO = matcher.group(2);
if (countryISO == null) {
lang = new Locale(langISO.toLowerCase());
} else {
lang = new Locale(langISO.toLowerCase(), countryISO.toLowerCase());
}
} else {
throw new StaxNavException(navigator.getLocation(), "The attribute xml:lang='" + attribute
+ "' does not represent a valid language pattern (ie: en, en-us).");
}
}
String value = StaxNavUtils.getRequiredContent(navigator, false);
return new LocalizedString(value, lang);
}
/**
* Removes empty strings and {@code null} elements from the given string {@code array}. Returns the submitted instance if
* there is no change.
*
* @param array the array to tidy up
* @return A new array with empty strings and {@code null} elements removed or the instance submitted over {@code array}
* argument if there is no change necessary.
*/
public static String[] tidyUp(String[] array) {
if (array == null || array.length == 0) {
return array;
} else {
int resultLength = array.length;
for (int i = 0; i < resultLength; i++) {
if (array[i] == null || array[i].length() == 0) {
/* shift the remaining elements to the left */
for (int j = i; j + 1 < resultLength; j++) {
array[j] = array[j + 1];
}
resultLength--;
i--;
}
}
if (resultLength < array.length) {
/* cut */
String[] result = new String[resultLength];
System.arraycopy(array, 0, result, 0, resultLength);
return result;
} else {
/* no change */
return array;
}
}
}
}