io.undertow.client.http.ResponseParseState Maven / Gradle / Ivy
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* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed 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 io.undertow.client.http;
import io.undertow.util.HttpString;
/**
* @author Emanuel Muckenhuber
*/
class ResponseParseState {
//parsing states
public static final int VERSION = 0;
public static final int STATUS_CODE = 1;
public static final int REASON_PHRASE = 2;
public static final int AFTER_REASON_PHRASE = 3;
public static final int HEADER = 4;
public static final int HEADER_VALUE = 5;
public static final int PARSE_COMPLETE = 6;
/**
* The actual state of request parsing
*/
int state;
/**
* The current state in the tokenizer state machine.
*/
int parseState;
/**
* If this state is a prefix or terminal match state this is set to the string
* that is a candidate to be matched
*/
HttpString current;
/**
* The bytes version of {@link #current}
*/
byte[] currentBytes;
/**
* If this state is a prefix match state then this holds the current position in the string.
*/
int pos;
/**
* If this is in {@link #NO_STATE} then this holds the current token that has been read so far.
*/
final StringBuilder stringBuilder = new StringBuilder();
/**
* This has different meanings depending on the current state.
*
* In state {@link #HEADER} it is a the first character of the header, that was read by
* {@link #HEADER_VALUE} to see if this was a continuation.
*
* In state {@link #HEADER_VALUE} if represents the last character that was seen.
*/
byte leftOver;
/**
* This is used to store the next header value when parsing header key / value pairs,
*/
HttpString nextHeader;
ResponseParseState() {
this.parseState = 0;
this.pos = 0;
}
public boolean isComplete() {
return state == PARSE_COMPLETE;
}
public final void parseComplete() {
state = PARSE_COMPLETE;
}
}