| 1 |  |  | 
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| 10 |  |  | 
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| 14 |  |  | 
| 15 |  |  | 
| 16 |  |  | 
| 17 |  |  | 
| 18 |  | package org.apache.geronimo.mail.util; | 
| 19 |  |  | 
| 20 |  | import java.io.IOException; | 
| 21 |  | import java.io.InputStream; | 
| 22 |  | import java.io.OutputStream; | 
| 23 |  | import java.io.PrintStream; | 
| 24 |  |  | 
| 25 |  | public class Base64Encoder | 
| 26 |  | implements Encoder | 
| 27 |  | { | 
| 28 |  | protected final byte[] encodingTable = | 
| 29 |  | { | 
| 30 |  | (byte)'A', (byte)'B', (byte)'C', (byte)'D', (byte)'E', (byte)'F', (byte)'G', | 
| 31 |  | (byte)'H', (byte)'I', (byte)'J', (byte)'K', (byte)'L', (byte)'M', (byte)'N', | 
| 32 |  | (byte)'O', (byte)'P', (byte)'Q', (byte)'R', (byte)'S', (byte)'T', (byte)'U', | 
| 33 |  | (byte)'V', (byte)'W', (byte)'X', (byte)'Y', (byte)'Z', | 
| 34 |  | (byte)'a', (byte)'b', (byte)'c', (byte)'d', (byte)'e', (byte)'f', (byte)'g', | 
| 35 |  | (byte)'h', (byte)'i', (byte)'j', (byte)'k', (byte)'l', (byte)'m', (byte)'n', | 
| 36 |  | (byte)'o', (byte)'p', (byte)'q', (byte)'r', (byte)'s', (byte)'t', (byte)'u', | 
| 37 |  | (byte)'v', | 
| 38 |  | (byte)'w', (byte)'x', (byte)'y', (byte)'z', | 
| 39 |  | (byte)'0', (byte)'1', (byte)'2', (byte)'3', (byte)'4', (byte)'5', (byte)'6', | 
| 40 |  | (byte)'7', (byte)'8', (byte)'9', | 
| 41 |  | (byte)'+', (byte)'/' | 
| 42 |  | }; | 
| 43 |  |  | 
| 44 |  | protected byte    padding = (byte)'='; | 
| 45 |  |  | 
| 46 |  |  | 
| 47 |  |  | 
| 48 |  |  | 
| 49 |  | protected final byte[] decodingTable = new byte[256]; | 
| 50 |  |  | 
| 51 | 11 | protected void initialiseDecodingTable() | 
| 52 |  | { | 
| 53 | 11 | for (int i = 0; i < encodingTable.length; i++) | 
| 54 |  | { | 
| 55 | 704 | decodingTable[encodingTable[i]] = (byte)i; | 
| 56 |  | } | 
| 57 |  | } | 
| 58 |  |  | 
| 59 | 11 | public Base64Encoder() | 
| 60 |  | { | 
| 61 | 11 | initialiseDecodingTable(); | 
| 62 |  | } | 
| 63 |  |  | 
| 64 |  |  | 
| 65 |  |  | 
| 66 |  |  | 
| 67 |  |  | 
| 68 |  |  | 
| 69 | 42 | public int encode( | 
| 70 |  | byte[]                data, | 
| 71 |  | int                    off, | 
| 72 |  | int                    length, | 
| 73 |  | OutputStream    out) | 
| 74 |  | throws IOException | 
| 75 |  | { | 
| 76 | 42 | int modulus = length % 3; | 
| 77 | 42 | int dataLength = (length - modulus); | 
| 78 | 42 | int a1, a2, a3; | 
| 79 |  |  | 
| 80 | 42 | for (int i = off; i < off + dataLength; i += 3) | 
| 81 |  | { | 
| 82 | 256 | a1 = data[i] & 0xff; | 
| 83 | 256 | a2 = data[i + 1] & 0xff; | 
| 84 | 256 | a3 = data[i + 2] & 0xff; | 
| 85 |  |  | 
| 86 | 256 | out.write(encodingTable[(a1 >>> 2) & 0x3f]); | 
| 87 | 256 | out.write(encodingTable[((a1 << 4) | (a2 >>> 4)) & 0x3f]); | 
| 88 | 256 | out.write(encodingTable[((a2 << 2) | (a3 >>> 6)) & 0x3f]); | 
| 89 | 256 | out.write(encodingTable[a3 & 0x3f]); | 
| 90 |  | } | 
| 91 |  |  | 
| 92 |  |  | 
| 93 |  |  | 
| 94 |  |  | 
| 95 | 42 | int    b1, b2, b3; | 
| 96 | 42 | int    d1, d2; | 
| 97 |  |  | 
| 98 | 42 | switch (modulus) | 
| 99 |  | { | 
| 100 | 40 | case 0: | 
| 101 | 40 | break; | 
| 102 | 1 | case 1: | 
| 103 | 1 | d1 = data[off + dataLength] & 0xff; | 
| 104 | 1 | b1 = (d1 >>> 2) & 0x3f; | 
| 105 | 1 | b2 = (d1 << 4) & 0x3f; | 
| 106 |  |  | 
| 107 | 1 | out.write(encodingTable[b1]); | 
| 108 | 1 | out.write(encodingTable[b2]); | 
| 109 | 1 | out.write(padding); | 
| 110 | 1 | out.write(padding); | 
| 111 | 1 | break; | 
| 112 | 1 | case 2: | 
| 113 | 1 | d1 = data[off + dataLength] & 0xff; | 
| 114 | 1 | d2 = data[off + dataLength + 1] & 0xff; | 
| 115 |  |  | 
| 116 | 1 | b1 = (d1 >>> 2) & 0x3f; | 
| 117 | 1 | b2 = ((d1 << 4) | (d2 >>> 4)) & 0x3f; | 
| 118 | 1 | b3 = (d2 << 2) & 0x3f; | 
| 119 |  |  | 
| 120 | 1 | out.write(encodingTable[b1]); | 
| 121 | 1 | out.write(encodingTable[b2]); | 
| 122 | 1 | out.write(encodingTable[b3]); | 
| 123 | 1 | out.write(padding); | 
| 124 | 1 | break; | 
| 125 |  | } | 
| 126 |  |  | 
| 127 | 42 | return (dataLength / 3) * 4 + ((modulus == 0) ? 0 : 4); | 
| 128 |  | } | 
| 129 |  |  | 
| 130 | 1062 | private boolean ignore( | 
| 131 |  | char    c) | 
| 132 |  | { | 
| 133 | 1062 | return (c == '\n' || c =='\r' || c == '\t' || c == ' '); | 
| 134 |  | } | 
| 135 |  |  | 
| 136 |  |  | 
| 137 |  |  | 
| 138 |  |  | 
| 139 |  |  | 
| 140 |  |  | 
| 141 |  |  | 
| 142 | 2 | public int decode( | 
| 143 |  | byte[]                data, | 
| 144 |  | int                    off, | 
| 145 |  | int                    length, | 
| 146 |  | OutputStream    out) | 
| 147 |  | throws IOException | 
| 148 |  | { | 
| 149 | 2 | byte[]    bytes; | 
| 150 | 2 | byte    b1, b2, b3, b4; | 
| 151 | 2 | int        outLen = 0; | 
| 152 |  |  | 
| 153 | 2 | int        end = off + length; | 
| 154 |  |  | 
| 155 | 2 | while (end > 0) | 
| 156 |  | { | 
| 157 | 2 | if (!ignore((char)data[end - 1])) | 
| 158 |  | { | 
| 159 | 2 | break; | 
| 160 |  | } | 
| 161 |  |  | 
| 162 | 0 | end--; | 
| 163 |  | } | 
| 164 |  |  | 
| 165 | 2 | int  i = off; | 
| 166 | 2 | int  finish = end - 4; | 
| 167 |  |  | 
| 168 | 2 | while (i < finish) | 
| 169 |  | { | 
| 170 | 10 | while ((i < finish) && ignore((char)data[i])) | 
| 171 |  | { | 
| 172 | 0 | i++; | 
| 173 |  | } | 
| 174 |  |  | 
| 175 | 10 | b1 = decodingTable[data[i++]]; | 
| 176 |  |  | 
| 177 | 10 | while ((i < finish) && ignore((char)data[i])) | 
| 178 |  | { | 
| 179 | 0 | i++; | 
| 180 |  | } | 
| 181 |  |  | 
| 182 | 10 | b2 = decodingTable[data[i++]]; | 
| 183 |  |  | 
| 184 | 10 | while ((i < finish) && ignore((char)data[i])) | 
| 185 |  | { | 
| 186 | 0 | i++; | 
| 187 |  | } | 
| 188 |  |  | 
| 189 | 10 | b3 = decodingTable[data[i++]]; | 
| 190 |  |  | 
| 191 | 10 | while ((i < finish) && ignore((char)data[i])) | 
| 192 |  | { | 
| 193 | 0 | i++; | 
| 194 |  | } | 
| 195 |  |  | 
| 196 | 10 | b4 = decodingTable[data[i++]]; | 
| 197 |  |  | 
| 198 | 10 | out.write((b1 << 2) | (b2 >> 4)); | 
| 199 | 10 | out.write((b2 << 4) | (b3 >> 2)); | 
| 200 | 10 | out.write((b3 << 6) | b4); | 
| 201 |  |  | 
| 202 | 10 | outLen += 3; | 
| 203 |  | } | 
| 204 |  |  | 
| 205 | 2 | if (data[end - 2] == padding) | 
| 206 |  | { | 
| 207 | 0 | b1 = decodingTable[data[end - 4]]; | 
| 208 | 0 | b2 = decodingTable[data[end - 3]]; | 
| 209 |  |  | 
| 210 | 0 | out.write((b1 << 2) | (b2 >> 4)); | 
| 211 |  |  | 
| 212 | 0 | outLen += 1; | 
| 213 |  | } | 
| 214 | 2 | else if (data[end - 1] == padding) | 
| 215 |  | { | 
| 216 | 2 | b1 = decodingTable[data[end - 4]]; | 
| 217 | 2 | b2 = decodingTable[data[end - 3]]; | 
| 218 | 2 | b3 = decodingTable[data[end - 2]]; | 
| 219 |  |  | 
| 220 | 2 | out.write((b1 << 2) | (b2 >> 4)); | 
| 221 | 2 | out.write((b2 << 4) | (b3 >> 2)); | 
| 222 |  |  | 
| 223 | 2 | outLen += 2; | 
| 224 |  | } | 
| 225 |  | else | 
| 226 |  | { | 
| 227 | 0 | b1 = decodingTable[data[end - 4]]; | 
| 228 | 0 | b2 = decodingTable[data[end - 3]]; | 
| 229 | 0 | b3 = decodingTable[data[end - 2]]; | 
| 230 | 0 | b4 = decodingTable[data[end - 1]]; | 
| 231 |  |  | 
| 232 | 0 | out.write((b1 << 2) | (b2 >> 4)); | 
| 233 | 0 | out.write((b2 << 4) | (b3 >> 2)); | 
| 234 | 0 | out.write((b3 << 6) | b4); | 
| 235 |  |  | 
| 236 | 0 | outLen += 3; | 
| 237 |  | } | 
| 238 |  |  | 
| 239 | 2 | return outLen; | 
| 240 |  | } | 
| 241 |  |  | 
| 242 |  |  | 
| 243 |  |  | 
| 244 |  |  | 
| 245 |  |  | 
| 246 |  |  | 
| 247 |  |  | 
| 248 | 0 | public int decode( | 
| 249 |  | String                data, | 
| 250 |  | OutputStream    out) | 
| 251 |  | throws IOException | 
| 252 |  | { | 
| 253 | 0 | byte[]    bytes; | 
| 254 | 0 | byte    b1, b2, b3, b4; | 
| 255 | 0 | int        length = 0; | 
| 256 |  |  | 
| 257 | 0 | int        end = data.length(); | 
| 258 |  |  | 
| 259 | 0 | while (end > 0) | 
| 260 |  | { | 
| 261 | 0 | if (!ignore(data.charAt(end - 1))) | 
| 262 |  | { | 
| 263 | 0 | break; | 
| 264 |  | } | 
| 265 |  |  | 
| 266 | 0 | end--; | 
| 267 |  | } | 
| 268 |  |  | 
| 269 | 0 | int    i = 0; | 
| 270 | 0 | int   finish = end - 4; | 
| 271 |  |  | 
| 272 | 0 | while (i < finish) | 
| 273 |  | { | 
| 274 | 0 | while ((i < finish) && ignore(data.charAt(i))) | 
| 275 |  | { | 
| 276 | 0 | i++; | 
| 277 |  | } | 
| 278 |  |  | 
| 279 | 0 | b1 = decodingTable[data.charAt(i++)]; | 
| 280 |  |  | 
| 281 | 0 | while ((i < finish) && ignore(data.charAt(i))) | 
| 282 |  | { | 
| 283 | 0 | i++; | 
| 284 |  | } | 
| 285 | 0 | b2 = decodingTable[data.charAt(i++)]; | 
| 286 |  |  | 
| 287 | 0 | while ((i < finish) && ignore(data.charAt(i))) | 
| 288 |  | { | 
| 289 | 0 | i++; | 
| 290 |  | } | 
| 291 | 0 | b3 = decodingTable[data.charAt(i++)]; | 
| 292 |  |  | 
| 293 | 0 | while ((i < finish) && ignore(data.charAt(i))) | 
| 294 |  | { | 
| 295 | 0 | i++; | 
| 296 |  | } | 
| 297 | 0 | b4 = decodingTable[data.charAt(i++)]; | 
| 298 |  |  | 
| 299 | 0 | out.write((b1 << 2) | (b2 >> 4)); | 
| 300 | 0 | out.write((b2 << 4) | (b3 >> 2)); | 
| 301 | 0 | out.write((b3 << 6) | b4); | 
| 302 |  |  | 
| 303 | 0 | length += 3; | 
| 304 |  | } | 
| 305 |  |  | 
| 306 | 0 | if (data.charAt(end - 2) == padding) | 
| 307 |  | { | 
| 308 | 0 | b1 = decodingTable[data.charAt(end - 4)]; | 
| 309 | 0 | b2 = decodingTable[data.charAt(end - 3)]; | 
| 310 |  |  | 
| 311 | 0 | out.write((b1 << 2) | (b2 >> 4)); | 
| 312 |  |  | 
| 313 | 0 | length += 1; | 
| 314 |  | } | 
| 315 | 0 | else if (data.charAt(end - 1) == padding) | 
| 316 |  | { | 
| 317 | 0 | b1 = decodingTable[data.charAt(end - 4)]; | 
| 318 | 0 | b2 = decodingTable[data.charAt(end - 3)]; | 
| 319 | 0 | b3 = decodingTable[data.charAt(end - 2)]; | 
| 320 |  |  | 
| 321 | 0 | out.write((b1 << 2) | (b2 >> 4)); | 
| 322 | 0 | out.write((b2 << 4) | (b3 >> 2)); | 
| 323 |  |  | 
| 324 | 0 | length += 2; | 
| 325 |  | } | 
| 326 |  | else | 
| 327 |  | { | 
| 328 | 0 | b1 = decodingTable[data.charAt(end - 4)]; | 
| 329 | 0 | b2 = decodingTable[data.charAt(end - 3)]; | 
| 330 | 0 | b3 = decodingTable[data.charAt(end - 2)]; | 
| 331 | 0 | b4 = decodingTable[data.charAt(end - 1)]; | 
| 332 |  |  | 
| 333 | 0 | out.write((b1 << 2) | (b2 >> 4)); | 
| 334 | 0 | out.write((b2 << 4) | (b3 >> 2)); | 
| 335 | 0 | out.write((b3 << 6) | b4); | 
| 336 |  |  | 
| 337 | 0 | length += 3; | 
| 338 |  | } | 
| 339 |  |  | 
| 340 | 0 | return length; | 
| 341 |  | } | 
| 342 |  |  | 
| 343 |  |  | 
| 344 |  |  | 
| 345 |  |  | 
| 346 |  |  | 
| 347 |  |  | 
| 348 | 4 | public int decode(byte[] data, int off, int length, byte[] out) throws IOException | 
| 349 |  | { | 
| 350 | 4 | byte[]    bytes; | 
| 351 | 4 | byte    b1, b2, b3, b4; | 
| 352 | 4 | int        outLen = 0; | 
| 353 |  |  | 
| 354 | 4 | int        end = off + length; | 
| 355 |  |  | 
| 356 | 4 | while (end > 0) | 
| 357 |  | { | 
| 358 | 4 | if (!ignore((char)data[end - 1])) | 
| 359 |  | { | 
| 360 | 4 | break; | 
| 361 |  | } | 
| 362 |  |  | 
| 363 | 0 | end--; | 
| 364 |  | } | 
| 365 |  |  | 
| 366 | 4 | int  i = off; | 
| 367 | 4 | int  finish = end - 4; | 
| 368 |  |  | 
| 369 | 4 | while (i < finish) | 
| 370 |  | { | 
| 371 | 254 | while ((i < finish) && ignore((char)data[i])) | 
| 372 |  | { | 
| 373 | 0 | i++; | 
| 374 |  | } | 
| 375 |  |  | 
| 376 | 254 | b1 = decodingTable[data[i++]]; | 
| 377 |  |  | 
| 378 | 254 | while ((i < finish) && ignore((char)data[i])) | 
| 379 |  | { | 
| 380 | 0 | i++; | 
| 381 |  | } | 
| 382 |  |  | 
| 383 | 254 | b2 = decodingTable[data[i++]]; | 
| 384 |  |  | 
| 385 | 254 | while ((i < finish) && ignore((char)data[i])) | 
| 386 |  | { | 
| 387 | 0 | i++; | 
| 388 |  | } | 
| 389 |  |  | 
| 390 | 254 | b3 = decodingTable[data[i++]]; | 
| 391 |  |  | 
| 392 | 254 | while ((i < finish) && ignore((char)data[i])) | 
| 393 |  | { | 
| 394 | 0 | i++; | 
| 395 |  | } | 
| 396 |  |  | 
| 397 | 254 | b4 = decodingTable[data[i++]]; | 
| 398 |  |  | 
| 399 | 254 | out[outLen++] = (byte)((b1 << 2) | (b2 >> 4)); | 
| 400 | 254 | out[outLen++] = (byte)((b2 << 4) | (b3 >> 2)); | 
| 401 | 254 | out[outLen++] = (byte)((b3 << 6) | b4); | 
| 402 |  | } | 
| 403 |  |  | 
| 404 | 4 | if (data[end - 2] == padding) | 
| 405 |  | { | 
| 406 | 1 | b1 = decodingTable[data[end - 4]]; | 
| 407 | 1 | b2 = decodingTable[data[end - 3]]; | 
| 408 |  |  | 
| 409 | 1 | out[outLen++] = (byte)((b1 << 2) | (b2 >> 4)); | 
| 410 |  | } | 
| 411 | 3 | else if (data[end - 1] == padding) | 
| 412 |  | { | 
| 413 | 1 | b1 = decodingTable[data[end - 4]]; | 
| 414 | 1 | b2 = decodingTable[data[end - 3]]; | 
| 415 | 1 | b3 = decodingTable[data[end - 2]]; | 
| 416 |  |  | 
| 417 | 1 | out[outLen++] = (byte)((b1 << 2) | (b2 >> 4)); | 
| 418 | 1 | out[outLen++] = (byte)((b2 << 4) | (b3 >> 2)); | 
| 419 |  | } | 
| 420 |  | else | 
| 421 |  | { | 
| 422 | 2 | b1 = decodingTable[data[end - 4]]; | 
| 423 | 2 | b2 = decodingTable[data[end - 3]]; | 
| 424 | 2 | b3 = decodingTable[data[end - 2]]; | 
| 425 | 2 | b4 = decodingTable[data[end - 1]]; | 
| 426 |  |  | 
| 427 | 2 | out[outLen++] = (byte)((b1 << 2) | (b2 >> 4)); | 
| 428 | 2 | out[outLen++] = (byte)((b2 << 4) | (b3 >> 2)); | 
| 429 | 2 | out[outLen++] = (byte)((b3 << 6) | b4); | 
| 430 |  | } | 
| 431 |  |  | 
| 432 | 4 | return outLen; | 
| 433 |  | } | 
| 434 |  |  | 
| 435 |  |  | 
| 436 |  |  | 
| 437 |  |  | 
| 438 |  |  | 
| 439 |  |  | 
| 440 |  |  | 
| 441 |  |  | 
| 442 |  |  | 
| 443 | 1056 | public boolean isValidBase64(int ch) { | 
| 444 |  |  | 
| 445 | 1056 | return ch == padding || ch == 'A' || decodingTable[ch] != 0; | 
| 446 |  | } | 
| 447 |  |  | 
| 448 |  |  | 
| 449 |  |  | 
| 450 |  |  | 
| 451 |  |  | 
| 452 |  |  | 
| 453 |  |  | 
| 454 |  |  | 
| 455 |  |  | 
| 456 |  |  | 
| 457 |  |  | 
| 458 |  |  | 
| 459 |  |  | 
| 460 | 2 | public void encodeWord(InputStream in, String charset, OutputStream out, boolean fold) throws IOException | 
| 461 |  | { | 
| 462 | 2 | PrintStream writer = new PrintStream(out); | 
| 463 |  |  | 
| 464 |  |  | 
| 465 | 2 | int limit = 76 - 7 - charset.length(); | 
| 466 | 2 | boolean firstLine = true; | 
| 467 | 2 | StringBuffer encodedString = new StringBuffer(76); | 
| 468 |  |  | 
| 469 | 2 | while (true) { | 
| 470 |  |  | 
| 471 | 4 | encode(in, encodedString, limit); | 
| 472 |  |  | 
| 473 | 4 | if (encodedString.length() == 0) { | 
| 474 | 2 | break; | 
| 475 |  | } | 
| 476 |  |  | 
| 477 |  |  | 
| 478 |  |  | 
| 479 | 2 | if (!firstLine) { | 
| 480 | 0 | if (fold) { | 
| 481 | 0 | writer.print("\r\n"); | 
| 482 |  | } | 
| 483 |  | else { | 
| 484 | 0 | writer.print(" "); | 
| 485 |  | } | 
| 486 |  | } | 
| 487 |  |  | 
| 488 |  |  | 
| 489 | 2 | writer.print("=?"); | 
| 490 | 2 | writer.print(charset); | 
| 491 | 2 | writer.print("?B?"); | 
| 492 |  |  | 
| 493 | 2 | writer.print(encodedString.toString()); | 
| 494 |  |  | 
| 495 | 2 | writer.print("?="); | 
| 496 | 2 | writer.flush(); | 
| 497 |  |  | 
| 498 |  |  | 
| 499 | 2 | encodedString.setLength(0); | 
| 500 |  | } | 
| 501 |  | } | 
| 502 |  |  | 
| 503 |  |  | 
| 504 |  |  | 
| 505 |  |  | 
| 506 |  |  | 
| 507 |  |  | 
| 508 | 4 | public void encode(InputStream in, StringBuffer out, int limit) throws IOException | 
| 509 |  | { | 
| 510 | 4 | int count = limit / 4; | 
| 511 | 4 | byte [] inBuffer = new byte[3]; | 
| 512 |  |  | 
| 513 | 14 | while (count-- > 0) { | 
| 514 |  |  | 
| 515 | 14 | int readCount = in.read(inBuffer); | 
| 516 |  |  | 
| 517 | 14 | if (readCount == 3) { | 
| 518 | 10 | int  a1 = inBuffer[0] & 0xff; | 
| 519 | 10 | int  a2 = inBuffer[1] & 0xff; | 
| 520 | 10 | int  a3 = inBuffer[2] & 0xff; | 
| 521 |  |  | 
| 522 | 10 | out.append((char)encodingTable[(a1 >>> 2) & 0x3f]); | 
| 523 | 10 | out.append((char)encodingTable[((a1 << 4) | (a2 >>> 4)) & 0x3f]); | 
| 524 | 10 | out.append((char)encodingTable[((a2 << 2) | (a3 >>> 6)) & 0x3f]); | 
| 525 | 10 | out.append((char)encodingTable[a3 & 0x3f]); | 
| 526 |  |  | 
| 527 |  | } | 
| 528 | 4 | else if (readCount <= 0) { | 
| 529 |  |  | 
| 530 | 2 | return; | 
| 531 |  | } | 
| 532 | 2 | else if (readCount == 1) { | 
| 533 | 0 | int  a1 = inBuffer[0] & 0xff; | 
| 534 | 0 | out.append((char)encodingTable[(a1 >>> 2) & 0x3f]); | 
| 535 | 0 | out.append((char)encodingTable[(a1 << 4) & 0x3f]); | 
| 536 | 0 | out.append((char)padding); | 
| 537 | 0 | out.append((char)padding); | 
| 538 | 0 | return; | 
| 539 |  | } | 
| 540 | 2 | else if (readCount == 2) { | 
| 541 | 2 | int  a1 = inBuffer[0] & 0xff; | 
| 542 | 2 | int  a2 = inBuffer[1] & 0xff; | 
| 543 |  |  | 
| 544 | 2 | out.append((char)encodingTable[(a1 >>> 2) & 0x3f]); | 
| 545 | 2 | out.append((char)encodingTable[((a1 << 4) | (a2 >>> 4)) & 0x3f]); | 
| 546 | 2 | out.append((char)encodingTable[(a2 << 2) & 0x3f]); | 
| 547 | 2 | out.append((char)padding); | 
| 548 | 2 | return; | 
| 549 |  | } | 
| 550 |  | } | 
| 551 |  | } | 
| 552 |  | } |