1 files changed, 297 insertions, 0 deletions
diff --git a/mobile/android/thirdparty/org/mozilla/apache/commons/codec/binary/BinaryCodec.java b/mobile/android/thirdparty/org/mozilla/apache/commons/codec/binary/BinaryCodec.java
new file mode 100644
index 000000000..141474151
--- /dev/null
+++ b/mobile/android/thirdparty/org/mozilla/apache/commons/codec/binary/BinaryCodec.java
@@ -0,0 +1,297 @@
+// Mozilla has modified this file - see http://hg.mozilla.org/ for details.
+/*
+ * 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.
+ */
+
+package org.mozilla.apache.commons.codec.binary;
+
+import org.mozilla.apache.commons.codec.BinaryDecoder;
+import org.mozilla.apache.commons.codec.BinaryEncoder;
+import org.mozilla.apache.commons.codec.DecoderException;
+import org.mozilla.apache.commons.codec.EncoderException;
+
+/**
+ * Converts between byte arrays and strings of "0"s and "1"s.
+ * 
+ * TODO: may want to add more bit vector functions like and/or/xor/nand 
+ * TODO: also might be good to generate boolean[] from byte[] et cetera.
+ * 
+ * @author Apache Software Foundation
+ * @since 1.3
+ * @version $Id: BinaryCodec.java 1080701 2011-03-11 17:52:27Z ggregory $
+ */
+public class BinaryCodec implements BinaryDecoder, BinaryEncoder {
+    /*
+     * tried to avoid using ArrayUtils to minimize dependencies while using these empty arrays - dep is just not worth
+     * it.
+     */
+    /** Empty char array. */
+    private static final char[] EMPTY_CHAR_ARRAY = new char[0];
+
+    /** Empty byte array. */
+    private static final byte[] EMPTY_BYTE_ARRAY = new byte[0];
+
+    /** Mask for bit 0 of a byte. */
+    private static final int BIT_0 = 1;
+
+    /** Mask for bit 1 of a byte. */
+    private static final int BIT_1 = 0x02;
+
+    /** Mask for bit 2 of a byte. */
+    private static final int BIT_2 = 0x04;
+
+    /** Mask for bit 3 of a byte. */
+    private static final int BIT_3 = 0x08;
+
+    /** Mask for bit 4 of a byte. */
+    private static final int BIT_4 = 0x10;
+
+    /** Mask for bit 5 of a byte. */
+    private static final int BIT_5 = 0x20;
+
+    /** Mask for bit 6 of a byte. */
+    private static final int BIT_6 = 0x40;
+
+    /** Mask for bit 7 of a byte. */
+    private static final int BIT_7 = 0x80;
+
+    private static final int[] BITS = {BIT_0, BIT_1, BIT_2, BIT_3, BIT_4, BIT_5, BIT_6, BIT_7};
+
+    /**
+     * Converts an array of raw binary data into an array of ASCII 0 and 1 characters.
+     * 
+     * @param raw
+     *                  the raw binary data to convert
+     * @return 0 and 1 ASCII character bytes one for each bit of the argument
+     * @see org.mozilla.apache.commons.codec.BinaryEncoder#encode(byte[])
+     */
+    public byte[] encode(byte[] raw) {
+        return toAsciiBytes(raw);
+    }
+
+    /**
+     * Converts an array of raw binary data into an array of ASCII 0 and 1 chars.
+     * 
+     * @param raw
+     *                  the raw binary data to convert
+     * @return 0 and 1 ASCII character chars one for each bit of the argument
+     * @throws EncoderException
+     *                  if the argument is not a byte[]
+     * @see org.mozilla.apache.commons.codec.Encoder#encode(Object)
+     */
+    public Object encode(Object raw) throws EncoderException {
+        if (!(raw instanceof byte[])) {
+            throw new EncoderException("argument not a byte array");
+        }
+        return toAsciiChars((byte[]) raw);
+    }
+
+    /**
+     * Decodes a byte array where each byte represents an ASCII '0' or '1'.
+     * 
+     * @param ascii
+     *                  each byte represents an ASCII '0' or '1'
+     * @return the raw encoded binary where each bit corresponds to a byte in the byte array argument
+     * @throws DecoderException
+     *                  if argument is not a byte[], char[] or String
+     * @see org.mozilla.apache.commons.codec.Decoder#decode(Object)
+     */
+    public Object decode(Object ascii) throws DecoderException {
+        if (ascii == null) {
+            return EMPTY_BYTE_ARRAY;
+        }
+        if (ascii instanceof byte[]) {
+            return fromAscii((byte[]) ascii);
+        }
+        if (ascii instanceof char[]) {
+            return fromAscii((char[]) ascii);
+        }
+        if (ascii instanceof String) {
+            return fromAscii(((String) ascii).toCharArray());
+        }
+        throw new DecoderException("argument not a byte array");
+    }
+
+    /**
+     * Decodes a byte array where each byte represents an ASCII '0' or '1'.
+     * 
+     * @param ascii
+     *                  each byte represents an ASCII '0' or '1'
+     * @return the raw encoded binary where each bit corresponds to a byte in the byte array argument
+     * @see org.mozilla.apache.commons.codec.Decoder#decode(Object)
+     */
+    public byte[] decode(byte[] ascii) {
+        return fromAscii(ascii);
+    }
+
+    /**
+     * Decodes a String where each char of the String represents an ASCII '0' or '1'.
+     * 
+     * @param ascii
+     *                  String of '0' and '1' characters
+     * @return the raw encoded binary where each bit corresponds to a byte in the byte array argument
+     * @see org.mozilla.apache.commons.codec.Decoder#decode(Object)
+     */
+    public byte[] toByteArray(String ascii) {
+        if (ascii == null) {
+            return EMPTY_BYTE_ARRAY;
+        }
+        return fromAscii(ascii.toCharArray());
+    }
+
+    // ------------------------------------------------------------------------
+    //
+    // static codec operations
+    //
+    // ------------------------------------------------------------------------
+    /**
+     * Decodes a char array where each char represents an ASCII '0' or '1'.
+     * 
+     * @param ascii
+     *                  each char represents an ASCII '0' or '1'
+     * @return the raw encoded binary where each bit corresponds to a char in the char array argument
+     */
+    public static byte[] fromAscii(char[] ascii) {
+        if (ascii == null || ascii.length == 0) {
+            return EMPTY_BYTE_ARRAY;
+        }
+        // get length/8 times bytes with 3 bit shifts to the right of the length
+        byte[] l_raw = new byte[ascii.length >> 3];
+        /*
+         * We decr index jj by 8 as we go along to not recompute indices using multiplication every time inside the
+         * loop.
+         */
+        for (int ii = 0, jj = ascii.length - 1; ii < l_raw.length; ii++, jj -= 8) {
+            for (int bits = 0; bits < BITS.length; ++bits) {
+                if (ascii[jj - bits] == '1') {
+                    l_raw[ii] |= BITS[bits];
+                }
+            }
+        }
+        return l_raw;
+    }
+
+    /**
+     * Decodes a byte array where each byte represents an ASCII '0' or '1'.
+     * 
+     * @param ascii
+     *                  each byte represents an ASCII '0' or '1'
+     * @return the raw encoded binary where each bit corresponds to a byte in the byte array argument
+     */
+    public static byte[] fromAscii(byte[] ascii) {
+        if (isEmpty(ascii)) {
+            return EMPTY_BYTE_ARRAY;
+        }
+        // get length/8 times bytes with 3 bit shifts to the right of the length
+        byte[] l_raw = new byte[ascii.length >> 3];
+        /*
+         * We decr index jj by 8 as we go along to not recompute indices using multiplication every time inside the
+         * loop.
+         */
+        for (int ii = 0, jj = ascii.length - 1; ii < l_raw.length; ii++, jj -= 8) {
+            for (int bits = 0; bits < BITS.length; ++bits) {
+                if (ascii[jj - bits] == '1') {
+                    l_raw[ii] |= BITS[bits];
+                }
+            }
+        }
+        return l_raw;
+    }
+
+    /**
+     * Returns <code>true</code> if the given array is <code>null</code> or empty (size 0.)
+     * 
+     * @param array
+     *            the source array
+     * @return <code>true</code> if the given array is <code>null</code> or empty (size 0.)
+     */
+    private static boolean isEmpty(byte[] array) {
+        return array == null || array.length == 0;
+    }
+
+    /**
+     * Converts an array of raw binary data into an array of ASCII 0 and 1 character bytes - each byte is a truncated
+     * char.
+     * 
+     * @param raw
+     *                  the raw binary data to convert
+     * @return an array of 0 and 1 character bytes for each bit of the argument
+     * @see org.mozilla.apache.commons.codec.BinaryEncoder#encode(byte[])
+     */
+    public static byte[] toAsciiBytes(byte[] raw) {
+        if (isEmpty(raw)) {
+            return EMPTY_BYTE_ARRAY;
+        }
+        // get 8 times the bytes with 3 bit shifts to the left of the length
+        byte[] l_ascii = new byte[raw.length << 3];
+        /*
+         * We decr index jj by 8 as we go along to not recompute indices using multiplication every time inside the
+         * loop.
+         */
+        for (int ii = 0, jj = l_ascii.length - 1; ii < raw.length; ii++, jj -= 8) {
+            for (int bits = 0; bits < BITS.length; ++bits) {
+                if ((raw[ii] & BITS[bits]) == 0) {
+                    l_ascii[jj - bits] = '0';
+                } else {
+                    l_ascii[jj - bits] = '1';
+                }
+            }
+        }
+        return l_ascii;
+    }
+
+    /**
+     * Converts an array of raw binary data into an array of ASCII 0 and 1 characters.
+     * 
+     * @param raw
+     *                  the raw binary data to convert
+     * @return an array of 0 and 1 characters for each bit of the argument
+     * @see org.mozilla.apache.commons.codec.BinaryEncoder#encode(byte[])
+     */
+    public static char[] toAsciiChars(byte[] raw) {
+        if (isEmpty(raw)) {
+            return EMPTY_CHAR_ARRAY;
+        }
+        // get 8 times the bytes with 3 bit shifts to the left of the length
+        char[] l_ascii = new char[raw.length << 3];
+        /*
+         * We decr index jj by 8 as we go along to not recompute indices using multiplication every time inside the
+         * loop.
+         */
+        for (int ii = 0, jj = l_ascii.length - 1; ii < raw.length; ii++, jj -= 8) {
+            for (int bits = 0; bits < BITS.length; ++bits) {
+                if ((raw[ii] & BITS[bits]) == 0) {
+                    l_ascii[jj - bits] = '0';
+                } else {
+                    l_ascii[jj - bits] = '1';
+                }
+            }
+        }
+        return l_ascii;
+    }
+
+    /**
+     * Converts an array of raw binary data into a String of ASCII 0 and 1 characters.
+     * 
+     * @param raw
+     *                  the raw binary data to convert
+     * @return a String of 0 and 1 characters representing the binary data
+     * @see org.mozilla.apache.commons.codec.BinaryEncoder#encode(byte[])
+     */
+    public static String toAsciiString(byte[] raw) {
+        return new String(toAsciiChars(raw));
+    }
+}