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/*
* ====================================================================
* 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
* .
*
*/
package org.apache.http.impl;
import java.util.Locale;
import org.apache.http.HttpStatus;
import org.apache.http.ReasonPhraseCatalog;
import org.apache.http.annotation.ThreadingBehavior;
import org.apache.http.annotation.Contract;
import org.apache.http.util.Args;
/**
* English reason phrases for HTTP status codes.
* All status codes defined in RFC1945 (HTTP/1.0), RFC2616 (HTTP/1.1), and
* RFC2518 (WebDAV) are supported.
*
* @since 4.0
*/
@Contract(threading = ThreadingBehavior.IMMUTABLE)
public class EnglishReasonPhraseCatalog implements ReasonPhraseCatalog {
// static array with english reason phrases defined below
/**
* The default instance of this catalog.
* This catalog is thread safe, so there typically
* is no need to create other instances.
*/
public final static EnglishReasonPhraseCatalog INSTANCE = new EnglishReasonPhraseCatalog();
/**
* Restricted default constructor, for derived classes.
* If you need an instance of this class, use {@link #INSTANCE INSTANCE}.
*/
protected EnglishReasonPhraseCatalog() {
// no body
}
/**
* Obtains the reason phrase for a status code.
*
* @param status the status code, in the range 100-599
* @param loc ignored
*
* @return the reason phrase, or {@code null}
*/
@Override
public String getReason(final int status, final Locale loc) {
Args.check(status >= 100 && status < 600, "Unknown category for status code " + status);
final int category = status / 100;
final int subcode = status - 100*category;
String reason = null;
if (REASON_PHRASES[category].length > subcode) {
reason = REASON_PHRASES[category][subcode];
}
return reason;
}
/** Reason phrases lookup table. */
private static final String[][] REASON_PHRASES = new String[][]{
null,
new String[3], // 1xx
new String[8], // 2xx
new String[8], // 3xx
new String[25], // 4xx
new String[8] // 5xx
};
/**
* Stores the given reason phrase, by status code.
* Helper method to initialize the static lookup table.
*
* @param status the status code for which to define the phrase
* @param reason the reason phrase for this status code
*/
private static void setReason(final int status, final String reason) {
final int category = status / 100;
final int subcode = status - 100*category;
REASON_PHRASES[category][subcode] = reason;
}
// ----------------------------------------------------- Static Initializer
/** Set up status code to "reason phrase" map. */
static {
// HTTP 1.0 Server status codes -- see RFC 1945
setReason(HttpStatus.SC_OK,
"OK");
setReason(HttpStatus.SC_CREATED,
"Created");
setReason(HttpStatus.SC_ACCEPTED,
"Accepted");
setReason(HttpStatus.SC_NO_CONTENT,
"No Content");
setReason(HttpStatus.SC_MOVED_PERMANENTLY,
"Moved Permanently");
setReason(HttpStatus.SC_MOVED_TEMPORARILY,
"Moved Temporarily");
setReason(HttpStatus.SC_NOT_MODIFIED,
"Not Modified");
setReason(HttpStatus.SC_BAD_REQUEST,
"Bad Request");
setReason(HttpStatus.SC_UNAUTHORIZED,
"Unauthorized");
setReason(HttpStatus.SC_FORBIDDEN,
"Forbidden");
setReason(HttpStatus.SC_NOT_FOUND,
"Not Found");
setReason(HttpStatus.SC_INTERNAL_SERVER_ERROR,
"Internal Server Error");
setReason(HttpStatus.SC_NOT_IMPLEMENTED,
"Not Implemented");
setReason(HttpStatus.SC_BAD_GATEWAY,
"Bad Gateway");
setReason(HttpStatus.SC_SERVICE_UNAVAILABLE,
"Service Unavailable");
// HTTP 1.1 Server status codes -- see RFC 2048
setReason(HttpStatus.SC_CONTINUE,
"Continue");
setReason(HttpStatus.SC_TEMPORARY_REDIRECT,
"Temporary Redirect");
setReason(HttpStatus.SC_METHOD_NOT_ALLOWED,
"Method Not Allowed");
setReason(HttpStatus.SC_CONFLICT,
"Conflict");
setReason(HttpStatus.SC_PRECONDITION_FAILED,
"Precondition Failed");
setReason(HttpStatus.SC_REQUEST_TOO_LONG,
"Request Too Long");
setReason(HttpStatus.SC_REQUEST_URI_TOO_LONG,
"Request-URI Too Long");
setReason(HttpStatus.SC_UNSUPPORTED_MEDIA_TYPE,
"Unsupported Media Type");
setReason(HttpStatus.SC_MULTIPLE_CHOICES,
"Multiple Choices");
setReason(HttpStatus.SC_SEE_OTHER,
"See Other");
setReason(HttpStatus.SC_USE_PROXY,
"Use Proxy");
setReason(HttpStatus.SC_PAYMENT_REQUIRED,
"Payment Required");
setReason(HttpStatus.SC_NOT_ACCEPTABLE,
"Not Acceptable");
setReason(HttpStatus.SC_PROXY_AUTHENTICATION_REQUIRED,
"Proxy Authentication Required");
setReason(HttpStatus.SC_REQUEST_TIMEOUT,
"Request Timeout");
setReason(HttpStatus.SC_SWITCHING_PROTOCOLS,
"Switching Protocols");
setReason(HttpStatus.SC_NON_AUTHORITATIVE_INFORMATION,
"Non Authoritative Information");
setReason(HttpStatus.SC_RESET_CONTENT,
"Reset Content");
setReason(HttpStatus.SC_PARTIAL_CONTENT,
"Partial Content");
setReason(HttpStatus.SC_GATEWAY_TIMEOUT,
"Gateway Timeout");
setReason(HttpStatus.SC_HTTP_VERSION_NOT_SUPPORTED,
"Http Version Not Supported");
setReason(HttpStatus.SC_GONE,
"Gone");
setReason(HttpStatus.SC_LENGTH_REQUIRED,
"Length Required");
setReason(HttpStatus.SC_REQUESTED_RANGE_NOT_SATISFIABLE,
"Requested Range Not Satisfiable");
setReason(HttpStatus.SC_EXPECTATION_FAILED,
"Expectation Failed");
// WebDAV Server-specific status codes
setReason(HttpStatus.SC_PROCESSING,
"Processing");
setReason(HttpStatus.SC_MULTI_STATUS,
"Multi-Status");
setReason(HttpStatus.SC_UNPROCESSABLE_ENTITY,
"Unprocessable Entity");
setReason(HttpStatus.SC_INSUFFICIENT_SPACE_ON_RESOURCE,
"Insufficient Space On Resource");
setReason(HttpStatus.SC_METHOD_FAILURE,
"Method Failure");
setReason(HttpStatus.SC_LOCKED,
"Locked");
setReason(HttpStatus.SC_INSUFFICIENT_STORAGE,
"Insufficient Storage");
setReason(HttpStatus.SC_FAILED_DEPENDENCY,
"Failed Dependency");
}
}
