/*
* © Copyright IBM Corp. 2012-2013
*
* Licensed 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 com.ibm.commons.util.io.base64;
/**
* Useful constants for base64 package.
* @ibm-not-published
*/
public class IoConstants {
/**
* RFC822 requires that header lines are limited to 998 octets (excluding CRLF)
*/
public static final int MAX_RFC822_LINE_LENGTH = 998;
/**
* RFC 2822 requires that body content lines can never be more than 998 octets (excluding CRLF)
*/
public static final int MAX_RFC2822_LINE_LENGTH = 998;
/**
* Map used for Base64 encoding
*/
public static final char[] B64_SRC_MAP = {
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J',
'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T',
'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd',
'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x',
'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', '+', '/'
};
/**
* Map used for Base64 decoding
*/
public static final byte[] B64_DST_MAP = new byte[256];
/**
* Char array used in decimal to hexidecimal conversion.
*/
public static final char[] HEX_CHARS = { '0','1','2','3','4','5','6', '7',
'8','9','A','B','C','D', 'E','F'};
/** Construct mapping from source to destination maps */
static {
for (int i = 0; i < B64_DST_MAP.length; i++) {
B64_DST_MAP[i] = -1;
}
for (int i = 0; i < B64_SRC_MAP.length; i++) {
B64_DST_MAP[B64_SRC_MAP[i]] = (byte)i;
}
}
}