| /* |
| * ==================================================================== |
| * 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. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| */ |
| |
| package org.apache.hc.core5.http; |
| |
| /** |
| * Signals that an HTTP exception has occurred. |
| * |
| * @since 4.0 |
| */ |
| public class HttpException extends Exception { |
| |
| private static final int FIRST_VALID_CHAR = 32; |
| private static final long serialVersionUID = -5437299376222011036L; |
| |
| /** |
| * Cleans the given String by converting characters with values less than 32 to equivalent hexadecimal codes. |
| * |
| * @param message the source string. |
| * @return a converted string. |
| */ |
| static String clean(final String message) { |
| final char[] chars = message.toCharArray(); |
| int i; |
| // First check to see if need to allocate a new StringBuilder |
| for (i = 0; i < chars.length; i++) { |
| if (chars[i] < FIRST_VALID_CHAR) { |
| break; |
| } |
| } |
| if (i == chars.length) { |
| return message; |
| } |
| final StringBuilder builder = new StringBuilder(chars.length * 2); |
| for (i = 0; i < chars.length; i++) { |
| final char ch = chars[i]; |
| if (ch < FIRST_VALID_CHAR) { |
| builder.append("[0x"); |
| final String hexString = Integer.toHexString(i); |
| if (hexString.length() == 1) { |
| builder.append("0"); |
| } |
| builder.append(hexString); |
| builder.append("]"); |
| } else { |
| builder.append(ch); |
| } |
| } |
| return builder.toString(); |
| } |
| |
| /** |
| * Creates a new HttpException with a {@code null} detail message. |
| */ |
| public HttpException() { |
| super(); |
| } |
| |
| /** |
| * Creates a new HttpException with the specified detail message. |
| * |
| * @param message the exception detail message |
| */ |
| public HttpException(final String message) { |
| super(clean(message)); |
| } |
| |
| /** |
| * Constructs a new HttpException with the specified detail message. |
| * |
| * @param format The exception detail message format; see {@link String#format(String, Object...)}. |
| * @param args The exception detail message arguments; see {@link String#format(String, Object...)}. |
| * |
| * @since 5.0 |
| */ |
| public HttpException(final String format, final Object... args) { |
| super(HttpException.clean(String.format(format, args))); |
| } |
| |
| /** |
| * Creates a new HttpException with the specified detail message and cause. |
| * |
| * @param message the exception detail message |
| * @param cause the {@code Throwable} that caused this exception, or {@code null} |
| * if the cause is unavailable, unknown, or not a {@code Throwable} |
| */ |
| public HttpException(final String message, final Throwable cause) { |
| super(clean(message)); |
| initCause(cause); |
| } |
| |
| } |