+++ /dev/null
-package com.easysw.cups;
-
-/**
-* A Base64 Encoder/Decoder.
-*
-* <p>
-* This class is used to encode and decode data in Base64 format as described in RFC 1521.
-*
-* <p>
-* This is "Open Source" software and released under the <a href="http://www.gnu.org/licenses/lgpl.html">GNU/LGPL</a> license.<br>
-* It is provided "as is" without warranty of any kind.<br>
-* Copyright 2003: Christian d'Heureuse, Inventec Informatik AG, Switzerland.<br>
-* Home page: <a href="http://www.source-code.biz">www.source-code.biz</a><br>
-*
-* <p>
-* Version history:<br>
-* 2003-07-22 Christian d'Heureuse (chdh): Module created.<br>
-* 2005-08-11 chdh: Lincense changed from GPL to LGPL.<br>
-* 2006-11-21 chdh:<br>
-* Method encode(String) renamed to encodeString(String).<br>
-* Method decode(String) renamed to decodeString(String).<br>
-* New method encode(byte[],int) added.<br>
-* New method decode(String) added.<br>
-*/
-
-public class Base64Coder {
-
-// Mapping table from 6-bit nibbles to Base64 characters.
-private static char[] map1 = new char[64];
- static {
- int i=0;
- for (char c='A'; c<='Z'; c++) map1[i++] = c;
- for (char c='a'; c<='z'; c++) map1[i++] = c;
- for (char c='0'; c<='9'; c++) map1[i++] = c;
- map1[i++] = '+'; map1[i++] = '/'; }
-
-// Mapping table from Base64 characters to 6-bit nibbles.
-private static byte[] map2 = new byte[128];
- static {
- for (int i=0; i<map2.length; i++) map2[i] = -1;
- for (int i=0; i<64; i++) map2[map1[i]] = (byte)i; }
-
-/**
-* Encodes a string into Base64 format.
-* No blanks or line breaks are inserted.
-* @param s a String to be encoded.
-* @return A String with the Base64 encoded data.
-*/
-public static String encodeString (String s) {
- return new String(encode(s.getBytes())); }
-
-/**
-* Encodes a byte array into Base64 format.
-* No blanks or line breaks are inserted.
-* @param in an array containing the data bytes to be encoded.
-* @return A character array with the Base64 encoded data.
-*/
-public static char[] encode (byte[] in) {
- return encode(in,in.length); }
-
-/**
-* Encodes a byte array into Base64 format.
-* No blanks or line breaks are inserted.
-* @param in an array containing the data bytes to be encoded.
-* @param iLen number of bytes to process in <code>in</code>.
-* @return A character array with the Base64 encoded data.
-*/
-public static char[] encode (byte[] in, int iLen) {
- int oDataLen = (iLen*4+2)/3; // output length without padding
- int oLen = ((iLen+2)/3)*4; // output length including padding
- char[] out = new char[oLen];
- int ip = 0;
- int op = 0;
- while (ip < iLen) {
- int i0 = in[ip++] & 0xff;
- int i1 = ip < iLen ? in[ip++] & 0xff : 0;
- int i2 = ip < iLen ? in[ip++] & 0xff : 0;
- int o0 = i0 >>> 2;
- int o1 = ((i0 & 3) << 4) | (i1 >>> 4);
- int o2 = ((i1 & 0xf) << 2) | (i2 >>> 6);
- int o3 = i2 & 0x3F;
- out[op++] = map1[o0];
- out[op++] = map1[o1];
- out[op] = op < oDataLen ? map1[o2] : '='; op++;
- out[op] = op < oDataLen ? map1[o3] : '='; op++; }
- return out; }
-
-/**
-* Decodes a string from Base64 format.
-* @param s a Base64 String to be decoded.
-* @return A String containing the decoded data.
-* @throws IllegalArgumentException if the input is not valid Base64 encoded data.
-*/
-public static String decodeString (String s) {
- return new String(decode(s)); }
-
-/**
-* Decodes a byte array from Base64 format.
-* @param s a Base64 String to be decoded.
-* @return An array containing the decoded data bytes.
-* @throws IllegalArgumentException if the input is not valid Base64 encoded data.
-*/
-public static byte[] decode (String s) {
- return decode(s.toCharArray()); }
-
-/**
-* Decodes a byte array from Base64 format.
-* No blanks or line breaks are allowed within the Base64 encoded data.
-* @param in a character array containing the Base64 encoded data.
-* @return An array containing the decoded data bytes.
-* @throws IllegalArgumentException if the input is not valid Base64 encoded data.
-*/
-public static byte[] decode (char[] in) {
- int iLen = in.length;
- if (iLen%4 != 0) throw new IllegalArgumentException ("Length of Base64 encoded input string is not a multiple of 4.");
- while (iLen > 0 && in[iLen-1] == '=') iLen--;
- int oLen = (iLen*3) / 4;
- byte[] out = new byte[oLen];
- int ip = 0;
- int op = 0;
- while (ip < iLen) {
- int i0 = in[ip++];
- int i1 = in[ip++];
- int i2 = ip < iLen ? in[ip++] : 'A';
- int i3 = ip < iLen ? in[ip++] : 'A';
- if (i0 > 127 || i1 > 127 || i2 > 127 || i3 > 127)
- throw new IllegalArgumentException ("Illegal character in Base64 encoded data.");
- int b0 = map2[i0];
- int b1 = map2[i1];
- int b2 = map2[i2];
- int b3 = map2[i3];
- if (b0 < 0 || b1 < 0 || b2 < 0 || b3 < 0)
- throw new IllegalArgumentException ("Illegal character in Base64 encoded data.");
- int o0 = ( b0 <<2) | (b1>>>4);
- int o1 = ((b1 & 0xf)<<4) | (b2>>>2);
- int o2 = ((b2 & 3)<<6) | b3;
- out[op++] = (byte)o0;
- if (op<oLen) out[op++] = (byte)o1;
- if (op<oLen) out[op++] = (byte)o2; }
- return out; }
-
-// Dummy constructor.
-private Base64Coder() {}
-
-} // end class Base64Coder
projects / thirdparty / cups.git / blobdiff