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Diffstat (limited to 'src/org/apache/http/message/BasicHeaderValueParser.java')
| -rw-r--r-- | src/org/apache/http/message/BasicHeaderValueParser.java | 420 |
1 files changed, 0 insertions, 420 deletions
diff --git a/src/org/apache/http/message/BasicHeaderValueParser.java b/src/org/apache/http/message/BasicHeaderValueParser.java deleted file mode 100644 index 5216196..0000000 --- a/src/org/apache/http/message/BasicHeaderValueParser.java +++ /dev/null @@ -1,420 +0,0 @@ -/* - * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/message/BasicHeaderValueParser.java $ - * $Revision: 595670 $ - * $Date: 2007-11-16 06:15:01 -0800 (Fri, 16 Nov 2007) $ - * - * ==================================================================== - * 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 org.apache.http.message; - - -import java.util.List; -import java.util.ArrayList; - -import org.apache.http.HeaderElement; -import org.apache.http.NameValuePair; -import org.apache.http.ParseException; -import org.apache.http.protocol.HTTP; -import org.apache.http.util.CharArrayBuffer; - - - -/** - * Basic implementation for parsing header values into elements. - * Instances of this class are stateless and thread-safe. - * Derived classes are expected to maintain these properties. - * - * @author <a href="mailto:bcholmes@interlog.com">B.C. Holmes</a> - * @author <a href="mailto:jericho@thinkfree.com">Park, Sung-Gu</a> - * @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a> - * @author <a href="mailto:oleg at ural.com">Oleg Kalnichevski</a> - * @author and others - * - * - * <!-- empty lines above to avoid 'svn diff' context problems --> - * @version $Revision: 595670 $ - * - * @since 4.0 - */ -public class BasicHeaderValueParser implements HeaderValueParser { - - /** - * A default instance of this class, for use as default or fallback. - * Note that {@link BasicHeaderValueParser} is not a singleton, there - * can be many instances of the class itself and of derived classes. - * The instance here provides non-customized, default behavior. - */ - public final static - BasicHeaderValueParser DEFAULT = new BasicHeaderValueParser(); - - private final static char PARAM_DELIMITER = ';'; - private final static char ELEM_DELIMITER = ','; - private final static char[] ALL_DELIMITERS = new char[] { - PARAM_DELIMITER, - ELEM_DELIMITER - }; - - // public default constructor - - - /** - * Parses elements with the given parser. - * - * @param value the header value to parse - * @param parser the parser to use, or <code>null</code> for default - * - * @return array holding the header elements, never <code>null</code> - */ - public final static - HeaderElement[] parseElements(final String value, - HeaderValueParser parser) - throws ParseException { - - if (value == null) { - throw new IllegalArgumentException - ("Value to parse may not be null"); - } - - if (parser == null) - parser = BasicHeaderValueParser.DEFAULT; - - CharArrayBuffer buffer = new CharArrayBuffer(value.length()); - buffer.append(value); - ParserCursor cursor = new ParserCursor(0, value.length()); - return parser.parseElements(buffer, cursor); - } - - - // non-javadoc, see interface HeaderValueParser - public HeaderElement[] parseElements(final CharArrayBuffer buffer, - final ParserCursor cursor) { - - if (buffer == null) { - throw new IllegalArgumentException("Char array buffer may not be null"); - } - if (cursor == null) { - throw new IllegalArgumentException("Parser cursor may not be null"); - } - - List elements = new ArrayList(); - while (!cursor.atEnd()) { - HeaderElement element = parseHeaderElement(buffer, cursor); - if (!(element.getName().length() == 0 && element.getValue() == null)) { - elements.add(element); - } - } - return (HeaderElement[]) - 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</code> for default - * - * @return the parsed header element - */ - public final static - HeaderElement parseHeaderElement(final String value, - HeaderValueParser parser) - throws ParseException { - - if (value == null) { - throw new IllegalArgumentException - ("Value to parse may not be null"); - } - - if (parser == null) - parser = BasicHeaderValueParser.DEFAULT; - - CharArrayBuffer buffer = new CharArrayBuffer(value.length()); - buffer.append(value); - ParserCursor cursor = new ParserCursor(0, value.length()); - return parser.parseHeaderElement(buffer, cursor); - } - - - // non-javadoc, see interface HeaderValueParser - public HeaderElement parseHeaderElement(final CharArrayBuffer buffer, - final ParserCursor cursor) { - - if (buffer == null) { - throw new IllegalArgumentException("Char array buffer may not be null"); - } - if (cursor == null) { - throw new IllegalArgumentException("Parser cursor may not be null"); - } - - NameValuePair nvp = parseNameValuePair(buffer, cursor); - NameValuePair[] params = null; - if (!cursor.atEnd()) { - 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</code> for default - * - * @return array holding the parameters, never <code>null</code> - */ - public final static - NameValuePair[] parseParameters(final String value, - HeaderValueParser parser) - throws ParseException { - - if (value == null) { - throw new IllegalArgumentException - ("Value to parse may not be null"); - } - - if (parser == null) - parser = BasicHeaderValueParser.DEFAULT; - - CharArrayBuffer buffer = new CharArrayBuffer(value.length()); - buffer.append(value); - ParserCursor cursor = new ParserCursor(0, value.length()); - return parser.parseParameters(buffer, cursor); - } - - - - // non-javadoc, see interface HeaderValueParser - public NameValuePair[] parseParameters(final CharArrayBuffer buffer, - final ParserCursor cursor) { - - if (buffer == null) { - throw new IllegalArgumentException("Char array buffer may not be null"); - } - if (cursor == null) { - throw new IllegalArgumentException("Parser cursor may not be null"); - } - - int pos = cursor.getPos(); - int indexTo = cursor.getUpperBound(); - - while (pos < indexTo) { - char ch = buffer.charAt(pos); - if (HTTP.isWhitespace(ch)) { - pos++; - } else { - break; - } - } - cursor.updatePos(pos); - if (cursor.atEnd()) { - return new NameValuePair[] {}; - } - - List params = new ArrayList(); - while (!cursor.atEnd()) { - NameValuePair param = parseNameValuePair(buffer, cursor); - params.add(param); - char ch = buffer.charAt(cursor.getPos() - 1); - if (ch == ELEM_DELIMITER) { - break; - } - } - - return (NameValuePair[]) - 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</code> for default - * - * @return the parsed name-value pair - */ - public final static - NameValuePair parseNameValuePair(final String value, - HeaderValueParser parser) - throws ParseException { - - if (value == null) { - throw new IllegalArgumentException - ("Value to parse may not be null"); - } - - if (parser == null) - parser = BasicHeaderValueParser.DEFAULT; - - CharArrayBuffer buffer = new CharArrayBuffer(value.length()); - buffer.append(value); - ParserCursor cursor = new ParserCursor(0, value.length()); - return parser.parseNameValuePair(buffer, cursor); - } - - - // non-javadoc, see interface HeaderValueParser - public NameValuePair parseNameValuePair(final CharArrayBuffer buffer, - final ParserCursor cursor) { - return parseNameValuePair(buffer, cursor, ALL_DELIMITERS); - } - - private static boolean isOneOf(final char ch, final char[] chs) { - if (chs != null) { - for (int i = 0; i < chs.length; i++) { - if (ch == chs[i]) { - return true; - } - } - } - return false; - } - - public NameValuePair parseNameValuePair(final CharArrayBuffer buffer, - final ParserCursor cursor, - final char[] delimiters) { - - if (buffer == null) { - throw new IllegalArgumentException("Char array buffer may not be null"); - } - if (cursor == null) { - throw new IllegalArgumentException("Parser cursor may not be null"); - } - - boolean terminated = false; - - int pos = cursor.getPos(); - int indexFrom = cursor.getPos(); - int indexTo = cursor.getUpperBound(); - - // Find name - String name = null; - while (pos < indexTo) { - char ch = buffer.charAt(pos); - if (ch == '=') { - break; - } - if (isOneOf(ch, delimiters)) { - 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 createNameValuePair(name, null); - } - - // Find value - String value = null; - int i1 = pos; - - boolean qouted = false; - boolean escaped = false; - while (pos < indexTo) { - char ch = buffer.charAt(pos); - if (ch == '"' && !escaped) { - qouted = !qouted; - } - if (!qouted && !escaped && isOneOf(ch, delimiters)) { - terminated = true; - break; - } - if (escaped) { - escaped = false; - } else { - escaped = qouted && ch == '\\'; - } - 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--; - } - // Strip away quotes if necessary - if (((i2 - i1) >= 2) - && (buffer.charAt(i1) == '"') - && (buffer.charAt(i2 - 1) == '"')) { - i1++; - i2--; - } - value = buffer.substring(i1, i2); - if (terminated) { - pos++; - } - cursor.updatePos(pos); - return createNameValuePair(name, value); - } - - /** - * Creates a name-value pair. - * Called from {@link #parseNameValuePair}. - * - * @param name the name - * @param value the value, or <code>null</code> - * - * @return a name-value pair representing the arguments - */ - protected NameValuePair createNameValuePair(final String name, final String value) { - return new BasicNameValuePair(name, value); - } - -} - |