2 * basE91 encoding/decoding routines
4 * Copyright (c) 2000-2006 Joachim Henke
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8 * modification, are permitted provided that the following conditions are met:
10 * - Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
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34 private int ebq, en, dbq, dn, dv;
35 public final byte[] enctab;
36 private final byte[] dectab;
38 public int encode(byte[] ib, int n, byte[] ob)
42 for (i = 0; i < n; ++i) {
43 ebq |= (ib[i] & 255) << en;
56 ob[c++] = enctab[ev % 91];
57 ob[c++] = enctab[ev / 91];
63 public int encEnd(byte[] ob)
68 ob[c++] = enctab[ebq % 91];
69 if (en > 7 || ebq > 90)
70 ob[c++] = enctab[ebq / 91];
76 public void encReset()
82 public int decode(byte[] ib, int n, byte[] ob)
86 for (i = 0; i < n; ++i) {
87 if (dectab[ib[i]] == -1)
92 dv += dectab[ib[i]] * 91;
94 dn += (dv & 8191) > 88 ? 13 : 14;
106 public int decEnd(byte[] ob)
111 ob[c++] = (byte) (dbq | dv << dn);
116 public void decReset()
126 String ts = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!#$%&()*+,./:;<=>?@[]^_`{|}~\"";
128 enctab = ts.getBytes();
129 dectab = new byte[256];
130 for (i = 0; i < 256; ++i)
132 for (i = 0; i < 91; ++i)
133 dectab[enctab[i]] = (byte) i;