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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
* <http://www.apache.org/>.
*
*/
package ch.boye.httpclientandroidlib.impl.cookie;
import java.util.ArrayList;
import java.util.List;
import ch.boye.httpclientandroidlib.HeaderElement;
import ch.boye.httpclientandroidlib.NameValuePair;
import ch.boye.httpclientandroidlib.ParseException;
import ch.boye.httpclientandroidlib.annotation.Immutable;
import ch.boye.httpclientandroidlib.message.BasicHeaderElement;
import ch.boye.httpclientandroidlib.message.BasicNameValuePair;
import ch.boye.httpclientandroidlib.message.ParserCursor;
import ch.boye.httpclientandroidlib.protocol.HTTP;
import ch.boye.httpclientandroidlib.util.Args;
import ch.boye.httpclientandroidlib.util.CharArrayBuffer;
/**
*
* @since 4.0
*/
@Immutable
public class NetscapeDraftHeaderParser {
public final static NetscapeDraftHeaderParser DEFAULT = new NetscapeDraftHeaderParser();
public NetscapeDraftHeaderParser() {
super();
}
public HeaderElement parseHeader(
final CharArrayBuffer buffer,
final ParserCursor cursor) throws ParseException {
Args.notNull(buffer, "Char array buffer");
Args.notNull(cursor, "Parser cursor");
final NameValuePair nvp = parseNameValuePair(buffer, cursor);
final List<NameValuePair> params = new ArrayList<NameValuePair>();
while (!cursor.atEnd()) {
final NameValuePair param = parseNameValuePair(buffer, cursor);
params.add(param);
}
return new BasicHeaderElement(
nvp.getName(),
nvp.getValue(), params.toArray(new NameValuePair[params.size()]));
}
private NameValuePair parseNameValuePair(
final CharArrayBuffer buffer, final ParserCursor cursor) {
boolean terminated = false;
int pos = cursor.getPos();
final int indexFrom = cursor.getPos();
final int indexTo = cursor.getUpperBound();
// Find name
String name = null;
while (pos < indexTo) {
final char ch = buffer.charAt(pos);
if (ch == '=') {
break;
}
if (ch == ';') {
terminated = true;
break;
}
pos++;
}
if (pos == indexTo) {
terminated = true;
name = buffer.substringTrimmed(indexFrom, indexTo);
} else {
name = buffer.substringTrimmed(indexFrom, pos);
pos++;
}
if (terminated) {
cursor.updatePos(pos);
return new BasicNameValuePair(name, null);
}
// Find value
String value = null;
int i1 = pos;
while (pos < indexTo) {
final char ch = buffer.charAt(pos);
if (ch == ';') {
terminated = true;
break;
}
pos++;
}
int i2 = pos;
// Trim leading white spaces
while (i1 < i2 && (HTTP.isWhitespace(buffer.charAt(i1)))) {
i1++;
}
// Trim trailing white spaces
while ((i2 > i1) && (HTTP.isWhitespace(buffer.charAt(i2 - 1)))) {
i2--;
}
value = buffer.substring(i1, i2);
if (terminated) {
pos++;
}
cursor.updatePos(pos);
return new BasicNameValuePair(name, value);
}
}
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