The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/mobile/android/thirdparty/ch/boye/httpclientandroidlib/util/ExceptionUtils.java	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,79 @@
     1.4 +/*
     1.5 + * ====================================================================
     1.6 + * Licensed to the Apache Software Foundation (ASF) under one
     1.7 + * or more contributor license agreements.  See the NOTICE file
     1.8 + * distributed with this work for additional information
     1.9 + * regarding copyright ownership.  The ASF licenses this file
    1.10 + * to you under the Apache License, Version 2.0 (the
    1.11 + * "License"); you may not use this file except in compliance
    1.12 + * with the License.  You may obtain a copy of the License at
    1.13 + *
    1.14 + *   http://www.apache.org/licenses/LICENSE-2.0
    1.15 + *
    1.16 + * Unless required by applicable law or agreed to in writing,
    1.17 + * software distributed under the License is distributed on an
    1.18 + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    1.19 + * KIND, either express or implied.  See the License for the
    1.20 + * specific language governing permissions and limitations
    1.21 + * under the License.
    1.22 + * ====================================================================
    1.23 + *
    1.24 + * This software consists of voluntary contributions made by many
    1.25 + * individuals on behalf of the Apache Software Foundation.  For more
    1.26 + * information on the Apache Software Foundation, please see
    1.27 + * <http://www.apache.org/>.
    1.28 + *
    1.29 + */
    1.30 +package ch.boye.httpclientandroidlib.util;
    1.31 +
    1.32 +import java.lang.reflect.Method;
    1.33 +
    1.34 +/**
    1.35 + * The home for utility methods that handle various exception-related tasks.
    1.36 + *
    1.37 + *
    1.38 + * @since 4.0
    1.39 + */
    1.40 +public final class ExceptionUtils {
    1.41 +
    1.42 +    /** A reference to Throwable's initCause method, or null if it's not there in this JVM */
    1.43 +    static private final Method INIT_CAUSE_METHOD = getInitCauseMethod();
    1.44 +
    1.45 +    /**
    1.46 +     * Returns a <code>Method<code> allowing access to
    1.47 +     * {@link Throwable#initCause(Throwable) initCause} method of {@link Throwable},
    1.48 +     * or <code>null</code> if the method
    1.49 +     * does not exist.
    1.50 +     *
    1.51 +     * @return A <code>Method<code> for <code>Throwable.initCause</code>, or
    1.52 +     * <code>null</code> if unavailable.
    1.53 +     */
    1.54 +    static private Method getInitCauseMethod() {
    1.55 +        try {
    1.56 +            Class[] paramsClasses = new Class[] { Throwable.class };
    1.57 +            return Throwable.class.getMethod("initCause", paramsClasses);
    1.58 +        } catch (NoSuchMethodException e) {
    1.59 +            return null;
    1.60 +        }
    1.61 +    }
    1.62 +
    1.63 +    /**
    1.64 +     * If we're running on JDK 1.4 or later, initialize the cause for the given throwable.
    1.65 +     *
    1.66 +     * @param  throwable The throwable.
    1.67 +     * @param  cause     The cause of the throwable.
    1.68 +     */
    1.69 +    public static void initCause(Throwable throwable, Throwable cause) {
    1.70 +        if (INIT_CAUSE_METHOD != null) {
    1.71 +            try {
    1.72 +                INIT_CAUSE_METHOD.invoke(throwable, new Object[] { cause });
    1.73 +            } catch (Exception e) {
    1.74 +                // Well, with no logging, the only option is to munch the exception
    1.75 +            }
    1.76 +        }
    1.77 +    }
    1.78 +
    1.79 +    private ExceptionUtils() {
    1.80 +    }
    1.81 +
    1.82 +}