pt 1 in reviving the android build (copied from pm 28a1, wish me luck)

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

@@ -0,0 +1,311 @@
+/*
+ * ====================================================================
+ * 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.io.Serializable;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Locale;
+
+import ch.boye.httpclientandroidlib.Header;
+import ch.boye.httpclientandroidlib.HeaderIterator;
+import ch.boye.httpclientandroidlib.annotation.NotThreadSafe;
+import ch.boye.httpclientandroidlib.util.CharArrayBuffer;
+
+/**
+ * A class for combining a set of headers.
+ * This class allows for multiple headers with the same name and
+ * keeps track of the order in which headers were added.
+ *
+ *
+ * @since 4.0
+ */
+@NotThreadSafe
+public class HeaderGroup implements Cloneable, Serializable {
+
+    private static final long serialVersionUID = 2608834160639271617L;
+
+    /** The list of headers for this group, in the order in which they were added */
+    private final List<Header> headers;
+
+    /**
+     * Constructor for HeaderGroup.
+     */
+    public HeaderGroup() {
+        this.headers = new ArrayList<Header>(16);
+    }
+
+    /**
+     * Removes any contained headers.
+     */
+    public void clear() {
+        headers.clear();
+    }
+
+    /**
+     * Adds the given header to the group.  The order in which this header was
+     * added is preserved.
+     *
+     * @param header the header to add
+     */
+    public void addHeader(final Header header) {
+        if (header == null) {
+            return;
+        }
+        headers.add(header);
+    }
+
+    /**
+     * Removes the given header.
+     *
+     * @param header the header to remove
+     */
+    public void removeHeader(final Header header) {
+        if (header == null) {
+            return;
+        }
+        headers.remove(header);
+    }
+
+    /**
+     * Replaces the first occurence of the header with the same name. If no header with
+     * the same name is found the given header is added to the end of the list.
+     *
+     * @param header the new header that should replace the first header with the same
+     * name if present in the list.
+     */
+    public void updateHeader(final Header header) {
+        if (header == null) {
+            return;
+        }
+        // HTTPCORE-361 : we don't use the for-each syntax, i.e.
+        //     for (Header header : headers)
+        // as that creates an Iterator that needs to be garbage-collected
+        for (int i = 0; i < this.headers.size(); i++) {
+            final Header current = this.headers.get(i);
+            if (current.getName().equalsIgnoreCase(header.getName())) {
+                this.headers.set(i, header);
+                return;
+            }
+        }
+        this.headers.add(header);
+    }
+
+    /**
+     * Sets all of the headers contained within this group overriding any
+     * existing headers. The headers are added in the order in which they appear
+     * in the array.
+     *
+     * @param headers the headers to set
+     */
+    public void setHeaders(final Header[] headers) {
+        clear();
+        if (headers == null) {
+            return;
+        }
+        Collections.addAll(this.headers, headers);
+    }
+
+    /**
+     * Gets a header representing all of the header values with the given name.
+     * If more that one header with the given name exists the values will be
+     * combined with a "," as per RFC 2616.
+     *
+     * <p>Header name comparison is case insensitive.
+     *
+     * @param name the name of the header(s) to get
+     * @return a header with a condensed value or <code>null</code> if no
+     * headers by the given name are present
+     */
+    public Header getCondensedHeader(final String name) {
+        final Header[] hdrs = getHeaders(name);
+
+        if (hdrs.length == 0) {
+            return null;
+        } else if (hdrs.length == 1) {
+            return hdrs[0];
+        } else {
+            final CharArrayBuffer valueBuffer = new CharArrayBuffer(128);
+            valueBuffer.append(hdrs[0].getValue());
+            for (int i = 1; i < hdrs.length; i++) {
+                valueBuffer.append(", ");
+                valueBuffer.append(hdrs[i].getValue());
+            }
+
+            return new BasicHeader(name.toLowerCase(Locale.ENGLISH), valueBuffer.toString());
+        }
+    }
+
+    /**
+     * Gets all of the headers with the given name.  The returned array
+     * maintains the relative order in which the headers were added.
+     *
+     * <p>Header name comparison is case insensitive.
+     *
+     * @param name the name of the header(s) to get
+     *
+     * @return an array of length >= 0
+     */
+    public Header[] getHeaders(final String name) {
+        final List<Header> headersFound = new ArrayList<Header>();
+        // HTTPCORE-361 : we don't use the for-each syntax, i.e.
+        //     for (Header header : headers)
+        // as that creates an Iterator that needs to be garbage-collected
+        for (int i = 0; i < this.headers.size(); i++) {
+            final Header header = this.headers.get(i);
+            if (header.getName().equalsIgnoreCase(name)) {
+                headersFound.add(header);
+            }
+        }
+
+        return headersFound.toArray(new Header[headersFound.size()]);
+    }
+
+    /**
+     * Gets the first header with the given name.
+     *
+     * <p>Header name comparison is case insensitive.
+     *
+     * @param name the name of the header to get
+     * @return the first header or <code>null</code>
+     */
+    public Header getFirstHeader(final String name) {
+        // HTTPCORE-361 : we don't use the for-each syntax, i.e.
+        //     for (Header header : headers)
+        // as that creates an Iterator that needs to be garbage-collected
+        for (int i = 0; i < this.headers.size(); i++) {
+            final Header header = this.headers.get(i);
+            if (header.getName().equalsIgnoreCase(name)) {
+                return header;
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Gets the last header with the given name.
+     *
+     * <p>Header name comparison is case insensitive.
+     *
+     * @param name the name of the header to get
+     * @return the last header or <code>null</code>
+     */
+    public Header getLastHeader(final String name) {
+        // start at the end of the list and work backwards
+        for (int i = headers.size() - 1; i >= 0; i--) {
+            final Header header = headers.get(i);
+            if (header.getName().equalsIgnoreCase(name)) {
+                return header;
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * Gets all of the headers contained within this group.
+     *
+     * @return an array of length >= 0
+     */
+    public Header[] getAllHeaders() {
+        return headers.toArray(new Header[headers.size()]);
+    }
+
+    /**
+     * Tests if headers with the given name are contained within this group.
+     *
+     * <p>Header name comparison is case insensitive.
+     *
+     * @param name the header name to test for
+     * @return <code>true</code> if at least one header with the name is
+     * contained, <code>false</code> otherwise
+     */
+    public boolean containsHeader(final String name) {
+        // HTTPCORE-361 : we don't use the for-each syntax, i.e.
+        //     for (Header header : headers)
+        // as that creates an Iterator that needs to be garbage-collected
+        for (int i = 0; i < this.headers.size(); i++) {
+            final Header header = this.headers.get(i);
+            if (header.getName().equalsIgnoreCase(name)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Returns an iterator over this group of headers.
+     *
+     * @return iterator over this group of headers.
+     *
+     * @since 4.0
+     */
+    public HeaderIterator iterator() {
+        return new BasicListHeaderIterator(this.headers, null);
+    }
+
+    /**
+     * Returns an iterator over the headers with a given name in this group.
+     *
+     * @param name      the name of the headers over which to iterate, or
+     *                  <code>null</code> for all headers
+     *
+     * @return iterator over some headers in this group.
+     *
+     * @since 4.0
+     */
+    public HeaderIterator iterator(final String name) {
+        return new BasicListHeaderIterator(this.headers, name);
+    }
+
+    /**
+     * Returns a copy of this object
+     *
+     * @return copy of this object
+     *
+     * @since 4.0
+     */
+    public HeaderGroup copy() {
+        final HeaderGroup clone = new HeaderGroup();
+        clone.headers.addAll(this.headers);
+        return clone;
+    }
+
+    @Override
+    public Object clone() throws CloneNotSupportedException {
+        return super.clone();
+    }
+
+    @Override
+    public String toString() {
+        return this.headers.toString();
+    }
+
+}