The Tor Browser: mobile/android/thirdparty/ch/boye/httpclientandroidlib/message/BasicHeaderValueParser.java@fc2d59ddac77 (annotated)

mobile/android/thirdparty/ch/boye/httpclientandroidlib/message/BasicHeaderValueParser.java@fc2d59ddac77 (annotated)

mobile/android/thirdparty/ch/boye/httpclientandroidlib/message/BasicHeaderValueParser.java

Wed, 31 Dec 2014 07:22:50 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 07:22:50 +0100
branch: TOR_BUG_3246
changeset 4: fc2d59ddac77
permissions: -rw-r--r--

Correct previous dual key logic pending first delivery installment.

 /*
  * ====================================================================
  * 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.message;
 import java.util.List;
 import java.util.ArrayList;
 import ch.boye.httpclientandroidlib.HeaderElement;
 import ch.boye.httpclientandroidlib.NameValuePair;
 import ch.boye.httpclientandroidlib.ParseException;
 import ch.boye.httpclientandroidlib.protocol.HTTP;
 import ch.boye.httpclientandroidlib.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.
  *
  * @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);
     }
 }

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mobile/android/thirdparty/ch/boye/httpclientandroidlib/message/BasicHeaderValueParser.java@fc2d59ddac77 (annotated)

mobile/android/thirdparty/ch/boye/httpclientandroidlib/message/BasicHeaderValueParser.java