/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.sling.commons.log.logback.internal.util;
import java.io.Closeable;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import org.xml.sax.InputSource;
public class Util {
public static List<String> toList(Object values) {
if (values == null) {
return Collections.emptyList();
}
Object[] valueArray;
if (values.getClass().isArray()) {
valueArray = (Object[]) values;
} else if (values instanceof Collection<?>) {
valueArray = ((Collection<?>) values).toArray();
} else {
valueArray = new Object[] {
values
};
}
List<String> valuesList = new ArrayList<String>(valueArray.length);
for (Object valueObject : valueArray) {
if (valueObject != null) {
String[] splitValues = valueObject.toString().split(",");
for (String value : splitValues) {
value = value.trim();
if (value.length() > 0) {
valuesList.add(value);
}
}
}
}
return valuesList;
}
public static void close(InputSource is) {
Closeable c = is.getByteStream();
if (c == null) {
c = is.getCharacterStream();
}
if (c != null) {
try {
c.close();
} catch (IOException e) {
// Ignore
}
}
}
//-------------Taken from org.apache.sling.commons.osgi.PropertiesUtil
/**
* Returns the boolean value of the parameter or the
* <code>defaultValue</code> if the parameter is <code>null</code>.
* If the parameter is not a <code>Boolean</code> it is converted
* by calling <code>Boolean.valueOf</code> on the string value of the
* object.
* @param propValue the property value or <code>null</code>
* @param defaultValue the default boolean value
*/
public static boolean toBoolean(Object propValue, boolean defaultValue) {
propValue = toObject(propValue);
if (propValue instanceof Boolean) {
return (Boolean) propValue;
} else if (propValue != null) {
return Boolean.valueOf(String.valueOf(propValue));
}
return defaultValue;
}
/**
* Returns the parameter as an integer or the
* <code>defaultValue</code> if the parameter is <code>null</code> or if
* the parameter is not an <code>Integer</code> and cannot be converted to
* an <code>Integer</code> from the parameter's string value.
* @param propValue the property value or <code>null</code>
* @param defaultValue the default integer value
*/
public static int toInteger(Object propValue, int defaultValue) {
propValue = toObject(propValue);
if (propValue instanceof Integer) {
return (Integer) propValue;
} else if (propValue != null) {
try {
return Integer.valueOf(String.valueOf(propValue));
} catch (NumberFormatException nfe) {
// don't care, fall through to default value
}
}
return defaultValue;
}
/**
* Returns the parameter as a single value. If the
* parameter is neither an array nor a <code>java.util.Collection</code> the
* parameter is returned unmodified. If the parameter is a non-empty array,
* the first array element is returned. If the property is a non-empty
* <code>java.util.Collection</code>, the first collection element is returned.
* Otherwise <code>null</code> is returned.
* @param propValue the parameter to convert.
*/
public static Object toObject(Object propValue) {
if (propValue == null) {
return null;
} else if (propValue.getClass().isArray()) {
Object[] prop = (Object[]) propValue;
return prop.length > 0 ? prop[0] : null;
} else if (propValue instanceof Collection<?>) {
Collection<?> prop = (Collection<?>) propValue;
return prop.isEmpty() ? null : prop.iterator().next();
} else {
return propValue;
}
}
}