io.netty.handler.codec.http.HttpStatusClass Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* Copyright 2014 The Netty Project
*
* The Netty Project 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:
*
* https://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 io.netty.handler.codec.http;
import io.netty.util.AsciiString;
/**
* The class of HTTP status.
*/
public enum HttpStatusClass {
/**
* The informational class (1xx)
*/
INFORMATIONAL(100, 200, "Informational"),
/**
* The success class (2xx)
*/
SUCCESS(200, 300, "Success"),
/**
* The redirection class (3xx)
*/
REDIRECTION(300, 400, "Redirection"),
/**
* The client error class (4xx)
*/
CLIENT_ERROR(400, 500, "Client Error"),
/**
* The server error class (5xx)
*/
SERVER_ERROR(500, 600, "Server Error"),
/**
* The unknown class
*/
UNKNOWN(0, 0, "Unknown Status") {
@Override
public boolean contains(int code) {
return code < 100 || code >= 600;
}
};
private static final HttpStatusClass[] statusArray = new HttpStatusClass[6];
static {
statusArray[1] = INFORMATIONAL;
statusArray[2] = SUCCESS;
statusArray[3] = REDIRECTION;
statusArray[4] = CLIENT_ERROR;
statusArray[5] = SERVER_ERROR;
}
/**
* Returns the class of the specified HTTP status code.
*/
public static HttpStatusClass valueOf(int code) {
if (UNKNOWN.contains(code)) {
return UNKNOWN;
}
return statusArray[fast_div100(code)];
}
/**
* @param dividend Must >= 0
* @return dividend/100
*/
private static int fast_div100(int dividend) {
return (int) ((dividend * 1374389535L) >> 37);
}
/**
* Returns the class of the specified HTTP status code.
* @param code Just the numeric portion of the http status code.
*/
public static HttpStatusClass valueOf(CharSequence code) {
if (code != null && code.length() == 3) {
char c0 = code.charAt(0);
return isDigit(c0) && isDigit(code.charAt(1)) && isDigit(code.charAt(2)) ? valueOf(digit(c0) * 100)
: UNKNOWN;
}
return UNKNOWN;
}
private static int digit(char c) {
return c - '0';
}
private static boolean isDigit(char c) {
return c >= '0' && c <= '9';
}
private final int min;
private final int max;
private final AsciiString defaultReasonPhrase;
HttpStatusClass(int min, int max, String defaultReasonPhrase) {
this.min = min;
this.max = max;
this.defaultReasonPhrase = AsciiString.cached(defaultReasonPhrase);
}
/**
* Returns {@code true} if and only if the specified HTTP status code falls into this class.
*/
public boolean contains(int code) {
return code >= min && code < max;
}
/**
* Returns the default reason phrase of this HTTP status class.
*/
AsciiString defaultReasonPhrase() {
return defaultReasonPhrase;
}
}