| /* |
| * 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; |
| } |
| } |
| } |