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feilong is a suite of core and expanded libraries that include utility classes, http, excel,cvs, io classes, and much much more.
/*
* ====================================================================
* 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
* elements = new ArrayList<>();
while (!cursor.atEnd()){
final HeaderElement element = parseHeaderElement(buffer, cursor);
if (!(element.getName().isEmpty() && element.getValue() == null)){
elements.add(element);
}
}
return elements.toArray(new HeaderElement[elements.size()]);
}
/**
* Parses an element with the given parser.
*
* @param value
* the header element to parse
* @param parser
* the parser to use, or {@code null} for default
*
* @return the parsed header element
*/
public static HeaderElement parseHeaderElement(final String value,final HeaderValueParser parser) throws ParseException{
Args.notNull(value, "Value");
final CharArrayBuffer buffer = new CharArrayBuffer(value.length());
buffer.append(value);
final ParserCursor cursor = new ParserCursor(0, value.length());
return (parser != null ? parser : BasicHeaderValueParser.INSTANCE).parseHeaderElement(buffer, cursor);
}
// non-javadoc, see interface HeaderValueParser
@Override
public HeaderElement parseHeaderElement(final CharArrayBuffer buffer,final ParserCursor cursor){
Args.notNull(buffer, "Char array buffer");
Args.notNull(cursor, "Parser cursor");
final NameValuePair nvp = parseNameValuePair(buffer, cursor);
NameValuePair[] params = null;
if (!cursor.atEnd()){
final char ch = buffer.charAt(cursor.getPos() - 1);
if (ch != ELEM_DELIMITER){
params = parseParameters(buffer, cursor);
}
}
return createHeaderElement(nvp.getName(), nvp.getValue(), params);
}
/**
* Creates a header element.
* Called from {@link #parseHeaderElement}.
*
* @return a header element representing the argument
*/
protected HeaderElement createHeaderElement(final String name,final String value,final NameValuePair[] params){
return new BasicHeaderElement(name, value, params);
}
/**
* Parses parameters with the given parser.
*
* @param value
* the parameter list to parse
* @param parser
* the parser to use, or {@code null} for default
*
* @return array holding the parameters, never {@code null}
*/
public static NameValuePair[] parseParameters(final String value,final HeaderValueParser parser) throws ParseException{
Args.notNull(value, "Value");
final CharArrayBuffer buffer = new CharArrayBuffer(value.length());
buffer.append(value);
final ParserCursor cursor = new ParserCursor(0, value.length());
return (parser != null ? parser : BasicHeaderValueParser.INSTANCE).parseParameters(buffer, cursor);
}
// non-javadoc, see interface HeaderValueParser
@Override
public NameValuePair[] parseParameters(final CharArrayBuffer buffer,final ParserCursor cursor){
Args.notNull(buffer, "Char array buffer");
Args.notNull(cursor, "Parser cursor");
tokenParser.skipWhiteSpace(buffer, cursor);
final List params = new ArrayList<>();
while (!cursor.atEnd()){
final NameValuePair param = parseNameValuePair(buffer, cursor);
params.add(param);
final char ch = buffer.charAt(cursor.getPos() - 1);
if (ch == ELEM_DELIMITER){
break;
}
}
return params.toArray(new NameValuePair[params.size()]);
}
/**
* Parses a name-value-pair with the given parser.
*
* @param value
* the NVP to parse
* @param parser
* the parser to use, or {@code null} for default
*
* @return the parsed name-value pair
*/
public static NameValuePair parseNameValuePair(final String value,final HeaderValueParser parser) throws ParseException{
Args.notNull(value, "Value");
final CharArrayBuffer buffer = new CharArrayBuffer(value.length());
buffer.append(value);
final ParserCursor cursor = new ParserCursor(0, value.length());
return (parser != null ? parser : BasicHeaderValueParser.INSTANCE).parseNameValuePair(buffer, cursor);
}
// non-javadoc, see interface HeaderValueParser
@Override
public NameValuePair parseNameValuePair(final CharArrayBuffer buffer,final ParserCursor cursor){
Args.notNull(buffer, "Char array buffer");
Args.notNull(cursor, "Parser cursor");
final String name = tokenParser.parseToken(buffer, cursor, TOKEN_DELIMS);
if (cursor.atEnd()){
return new BasicNameValuePair(name, null);
}
final int delim = buffer.charAt(cursor.getPos());
cursor.updatePos(cursor.getPos() + 1);
if (delim != '='){
return createNameValuePair(name, null);
}
final String value = tokenParser.parseValue(buffer, cursor, VALUE_DELIMS);
if (!cursor.atEnd()){
cursor.updatePos(cursor.getPos() + 1);
}
return createNameValuePair(name, value);
}
/**
* @deprecated (4.4) use {@link com.feilong.lib.org.apache.http.message.TokenParser}
*/
@Deprecated
public NameValuePair parseNameValuePair(final CharArrayBuffer buffer,final ParserCursor cursor,final char[] delimiters){
Args.notNull(buffer, "Char array buffer");
Args.notNull(cursor, "Parser cursor");
final BitSet delimSet = new BitSet();
if (delimiters != null){
for (final char delimiter : delimiters){
delimSet.set(delimiter);
}
}
delimSet.set('=');
final String name = tokenParser.parseToken(buffer, cursor, delimSet);
if (cursor.atEnd()){
return new BasicNameValuePair(name, null);
}
final int delim = buffer.charAt(cursor.getPos());
cursor.updatePos(cursor.getPos() + 1);
if (delim != '='){
return createNameValuePair(name, null);
}
delimSet.clear('=');
final String value = tokenParser.parseValue(buffer, cursor, delimSet);
if (!cursor.atEnd()){
cursor.updatePos(cursor.getPos() + 1);
}
return createNameValuePair(name, value);
}
/**
* Creates a name-value pair.
* Called from {@link #parseNameValuePair}.
*
* @param name
* the name
* @param value
* the value, or {@code null}
*
* @return a name-value pair representing the arguments
*/
protected NameValuePair createNameValuePair(final String name,final String value){
return new BasicNameValuePair(name, value);
}
}