1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/mobile/android/thirdparty/ch/boye/httpclientandroidlib/message/BasicHeaderElementIterator.java Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,154 @@
1.4 +/*
1.5 + * ====================================================================
1.6 + * Licensed to the Apache Software Foundation (ASF) under one
1.7 + * or more contributor license agreements. See the NOTICE file
1.8 + * distributed with this work for additional information
1.9 + * regarding copyright ownership. The ASF licenses this file
1.10 + * to you under the Apache License, Version 2.0 (the
1.11 + * "License"); you may not use this file except in compliance
1.12 + * with the License. You may obtain a copy of the License at
1.13 + *
1.14 + * http://www.apache.org/licenses/LICENSE-2.0
1.15 + *
1.16 + * Unless required by applicable law or agreed to in writing,
1.17 + * software distributed under the License is distributed on an
1.18 + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
1.19 + * KIND, either express or implied. See the License for the
1.20 + * specific language governing permissions and limitations
1.21 + * under the License.
1.22 + * ====================================================================
1.23 + *
1.24 + * This software consists of voluntary contributions made by many
1.25 + * individuals on behalf of the Apache Software Foundation. For more
1.26 + * information on the Apache Software Foundation, please see
1.27 + * <http://www.apache.org/>.
1.28 + *
1.29 + */
1.30 +
1.31 +package ch.boye.httpclientandroidlib.message;
1.32 +
1.33 +import java.util.NoSuchElementException;
1.34 +
1.35 +import ch.boye.httpclientandroidlib.FormattedHeader;
1.36 +import ch.boye.httpclientandroidlib.Header;
1.37 +import ch.boye.httpclientandroidlib.HeaderElement;
1.38 +import ch.boye.httpclientandroidlib.HeaderElementIterator;
1.39 +import ch.boye.httpclientandroidlib.HeaderIterator;
1.40 +import ch.boye.httpclientandroidlib.util.CharArrayBuffer;
1.41 +
1.42 +/**
1.43 + * Basic implementation of a {@link HeaderElementIterator}.
1.44 + *
1.45 + * @since 4.0
1.46 + */
1.47 +public class BasicHeaderElementIterator implements HeaderElementIterator {
1.48 +
1.49 + private final HeaderIterator headerIt;
1.50 + private final HeaderValueParser parser;
1.51 +
1.52 + private HeaderElement currentElement = null;
1.53 + private CharArrayBuffer buffer = null;
1.54 + private ParserCursor cursor = null;
1.55 +
1.56 + /**
1.57 + * Creates a new instance of BasicHeaderElementIterator
1.58 + */
1.59 + public BasicHeaderElementIterator(
1.60 + final HeaderIterator headerIterator,
1.61 + final HeaderValueParser parser) {
1.62 + if (headerIterator == null) {
1.63 + throw new IllegalArgumentException("Header iterator may not be null");
1.64 + }
1.65 + if (parser == null) {
1.66 + throw new IllegalArgumentException("Parser may not be null");
1.67 + }
1.68 + this.headerIt = headerIterator;
1.69 + this.parser = parser;
1.70 + }
1.71 +
1.72 +
1.73 + public BasicHeaderElementIterator(final HeaderIterator headerIterator) {
1.74 + this(headerIterator, BasicHeaderValueParser.DEFAULT);
1.75 + }
1.76 +
1.77 +
1.78 + private void bufferHeaderValue() {
1.79 + this.cursor = null;
1.80 + this.buffer = null;
1.81 + while (this.headerIt.hasNext()) {
1.82 + Header h = this.headerIt.nextHeader();
1.83 + if (h instanceof FormattedHeader) {
1.84 + this.buffer = ((FormattedHeader) h).getBuffer();
1.85 + this.cursor = new ParserCursor(0, this.buffer.length());
1.86 + this.cursor.updatePos(((FormattedHeader) h).getValuePos());
1.87 + break;
1.88 + } else {
1.89 + String value = h.getValue();
1.90 + if (value != null) {
1.91 + this.buffer = new CharArrayBuffer(value.length());
1.92 + this.buffer.append(value);
1.93 + this.cursor = new ParserCursor(0, this.buffer.length());
1.94 + break;
1.95 + }
1.96 + }
1.97 + }
1.98 + }
1.99 +
1.100 + private void parseNextElement() {
1.101 + // loop while there are headers left to parse
1.102 + while (this.headerIt.hasNext() || this.cursor != null) {
1.103 + if (this.cursor == null || this.cursor.atEnd()) {
1.104 + // get next header value
1.105 + bufferHeaderValue();
1.106 + }
1.107 + // Anything buffered?
1.108 + if (this.cursor != null) {
1.109 + // loop while there is data in the buffer
1.110 + while (!this.cursor.atEnd()) {
1.111 + HeaderElement e = this.parser.parseHeaderElement(this.buffer, this.cursor);
1.112 + if (!(e.getName().length() == 0 && e.getValue() == null)) {
1.113 + // Found something
1.114 + this.currentElement = e;
1.115 + return;
1.116 + }
1.117 + }
1.118 + // if at the end of the buffer
1.119 + if (this.cursor.atEnd()) {
1.120 + // discard it
1.121 + this.cursor = null;
1.122 + this.buffer = null;
1.123 + }
1.124 + }
1.125 + }
1.126 + }
1.127 +
1.128 + public boolean hasNext() {
1.129 + if (this.currentElement == null) {
1.130 + parseNextElement();
1.131 + }
1.132 + return this.currentElement != null;
1.133 + }
1.134 +
1.135 + public HeaderElement nextElement() throws NoSuchElementException {
1.136 + if (this.currentElement == null) {
1.137 + parseNextElement();
1.138 + }
1.139 +
1.140 + if (this.currentElement == null) {
1.141 + throw new NoSuchElementException("No more header elements available");
1.142 + }
1.143 +
1.144 + HeaderElement element = this.currentElement;
1.145 + this.currentElement = null;
1.146 + return element;
1.147 + }
1.148 +
1.149 + public final Object next() throws NoSuchElementException {
1.150 + return nextElement();
1.151 + }
1.152 +
1.153 + public void remove() throws UnsupportedOperationException {
1.154 + throw new UnsupportedOperationException("Remove not supported");
1.155 + }
1.156 +
1.157 +}
