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This module contains the Metro runtime code.
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2012 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* http://glassfish.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package org.jvnet.staxex;
/**
* @author Kohsuke Kawaguchi
*/
class Base64Encoder {
private static final char[] encodeMap = initEncodeMap();
private static char[] initEncodeMap() {
char[] map = new char[64];
int i;
for( i= 0; i<26; i++ ) map[i] = (char)('A'+i);
for( i=26; i<52; i++ ) map[i] = (char)('a'+(i-26));
for( i=52; i<62; i++ ) map[i] = (char)('0'+(i-52));
map[62] = '+';
map[63] = '/';
return map;
}
public static char encode( int i ) {
return encodeMap[i&0x3F];
}
public static byte encodeByte( int i ) {
return (byte)encodeMap[i&0x3F];
}
public static String print(byte[] input, int offset, int len) {
char[] buf = new char[((len+2)/3)*4];
int ptr = print(input,offset,len,buf,0);
assert ptr==buf.length;
return new String(buf);
}
/**
* Encodes a byte array into a char array by doing base64 encoding.
*
* The caller must supply a big enough buffer.
*
* @return
* the value of {@code ptr+((len+2)/3)*4}, which is the new offset
* in the output buffer where the further bytes should be placed.
*/
public static int print(byte[] input, int offset, int len, char[] buf, int ptr) {
for( int i=offset; i>2);
buf[ptr++] = encode(((input[i])&0x3)<<4);
buf[ptr++] = '=';
buf[ptr++] = '=';
break;
case 2:
buf[ptr++] = encode(input[i]>>2);
buf[ptr++] = encode(
((input[i]&0x3)<<4) |
((input[i+1]>>4)&0xF));
buf[ptr++] = encode((input[i+1]&0xF)<<2);
buf[ptr++] = '=';
break;
default:
buf[ptr++] = encode(input[i]>>2);
buf[ptr++] = encode(
((input[i]&0x3)<<4) |
((input[i+1]>>4)&0xF));
buf[ptr++] = encode(
((input[i+1]&0xF)<<2)|
((input[i+2]>>6)&0x3));
buf[ptr++] = encode(input[i+2]&0x3F);
break;
}
}
return ptr;
}
}