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annotate src/org/eclipse/jetty/io/AbstractBuffer.java @ 1028:2ea54e6117c3
remove HttpParser.reset()
| author | Franklin Schmidt <fschmidt@gmail.com> |
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| date | Thu, 03 Nov 2016 00:23:04 -0600 |
| parents | 6d17a257b03f |
| children | 4e5e9e3c25b3 |
| rev | line source |
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1 // |
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2 // ======================================================================== |
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3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. |
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4 // ------------------------------------------------------------------------ |
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5 // All rights reserved. This program and the accompanying materials |
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6 // are made available under the terms of the Eclipse Public License v1.0 |
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7 // and Apache License v2.0 which accompanies this distribution. |
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8 // |
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9 // The Eclipse Public License is available at |
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10 // http://www.eclipse.org/legal/epl-v10.html |
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11 // |
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12 // The Apache License v2.0 is available at |
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13 // http://www.opensource.org/licenses/apache2.0.php |
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14 // |
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15 // You may elect to redistribute this code under either of these licenses. |
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16 // ======================================================================== |
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17 // |
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18 |
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19 package org.eclipse.jetty.io; |
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20 |
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21 import java.io.IOException; |
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22 import java.io.InputStream; |
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23 import java.io.OutputStream; |
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24 import java.nio.charset.Charset; |
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25 |
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26 import org.eclipse.jetty.util.TypeUtil; |
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27 import org.slf4j.Logger; |
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28 import org.slf4j.LoggerFactory; |
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29 |
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30 /** |
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31 * |
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32 * |
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33 */ |
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34 public abstract class AbstractBuffer implements Buffer |
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35 { |
| 1005 | 36 private static final Logger LOG = LoggerFactory.getLogger(AbstractBuffer.class); |
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37 |
| 1005 | 38 private final static boolean __boundsChecking = Boolean.getBoolean("org.eclipse.jetty.io.AbstractBuffer.boundsChecking"); |
| 39 | |
| 40 protected final static String | |
| 41 __IMMUTABLE = "IMMUTABLE", | |
| 42 __READONLY = "READONLY", | |
| 43 __READWRITE = "READWRITE", | |
| 44 __VOLATILE = "VOLATILE"; | |
| 45 | |
| 46 protected int _access; | |
| 47 protected boolean _volatile; | |
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48 |
| 1005 | 49 protected int _get; |
| 50 protected int _put; | |
| 51 protected int _hash; | |
| 52 protected int _hashGet; | |
| 53 protected int _hashPut; | |
| 54 protected int _mark; | |
| 55 protected String _string; | |
| 56 protected View _view; | |
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57 |
| 1005 | 58 /** |
| 59 * Constructor for BufferView | |
| 60 * | |
| 61 * @param access 0==IMMUTABLE, 1==READONLY, 2==READWRITE | |
| 62 */ | |
| 63 public AbstractBuffer(int access, boolean isVolatile) | |
| 64 { | |
| 65 if (access == IMMUTABLE && isVolatile) | |
| 66 throw new IllegalArgumentException("IMMUTABLE && VOLATILE"); | |
| 67 setMarkIndex(-1); | |
| 68 _access = access; | |
| 69 _volatile = isVolatile; | |
| 70 } | |
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71 |
| 1005 | 72 /* |
| 73 * @see org.eclipse.io.Buffer#toArray() | |
| 74 */ | |
| 75 public byte[] asArray() | |
| 76 { | |
| 77 byte[] bytes = new byte[length()]; | |
| 78 byte[] array = array(); | |
| 79 if (array != null) | |
| 80 System.arraycopy(array, getIndex(), bytes, 0, bytes.length); | |
| 81 else | |
| 82 peek(getIndex(), bytes, 0, length()); | |
| 83 return bytes; | |
| 84 } | |
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85 |
| 1005 | 86 private ByteArrayBuffer duplicate(int access) |
| 87 { | |
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88 return new ByteArrayBuffer(asArray(), 0, length(), access); |
| 1005 | 89 } |
| 90 | |
| 91 /* | |
| 92 * @see org.eclipse.util.Buffer#asReadOnlyBuffer() | |
| 93 */ | |
| 94 public Buffer asReadOnlyBuffer() | |
| 95 { | |
| 96 if (isReadOnly()) return this; | |
| 97 return new View(this, markIndex(), getIndex(), putIndex(), READONLY); | |
| 98 } | |
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99 |
| 1005 | 100 public Buffer buffer() |
| 101 { | |
| 102 return this; | |
| 103 } | |
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104 |
| 1005 | 105 public void clear() |
| 106 { | |
| 107 setMarkIndex(-1); | |
| 108 setGetIndex(0); | |
| 109 setPutIndex(0); | |
| 110 } | |
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111 |
| 1005 | 112 public void compact() |
| 113 { | |
| 114 if (isReadOnly()) throw new IllegalStateException(__READONLY); | |
| 115 int s = markIndex() >= 0 ? markIndex() : getIndex(); | |
| 116 if (s > 0) | |
| 117 { | |
| 118 byte array[] = array(); | |
| 119 int length = putIndex() - s; | |
| 120 if (length > 0) | |
| 121 { | |
| 122 if (array != null) | |
| 123 System.arraycopy(array(), s, array(), 0, length); | |
| 124 else | |
| 125 poke(0, peek(s, length)); | |
| 126 } | |
| 127 if (markIndex() > 0) setMarkIndex(markIndex() - s); | |
| 128 setGetIndex(getIndex() - s); | |
| 129 setPutIndex(putIndex() - s); | |
| 130 } | |
| 131 } | |
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132 |
| 1005 | 133 @Override |
| 134 public boolean equals(Object obj) | |
| 135 { | |
| 136 if (obj==this) | |
| 137 return true; | |
| 138 | |
| 139 // reject non buffers; | |
| 140 if (obj == null || !(obj instanceof Buffer)) return false; | |
| 141 Buffer b = (Buffer) obj; | |
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142 |
| 1005 | 143 // reject different lengths |
| 144 if (b.length() != length()) return false; | |
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145 |
| 1005 | 146 // reject AbstractBuffer with different hash value |
| 147 if (_hash != 0 && obj instanceof AbstractBuffer) | |
| 148 { | |
| 149 AbstractBuffer ab = (AbstractBuffer) obj; | |
| 150 if (ab._hash != 0 && _hash != ab._hash) return false; | |
| 151 } | |
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152 |
| 1005 | 153 // Nothing for it but to do the hard grind. |
| 154 int get=getIndex(); | |
| 155 int bi=b.putIndex(); | |
| 156 for (int i = putIndex(); i-->get;) | |
| 157 { | |
| 158 byte b1 = peek(i); | |
| 159 byte b2 = b.peek(--bi); | |
| 160 if (b1 != b2) return false; | |
| 161 } | |
| 162 return true; | |
| 163 } | |
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164 |
| 1005 | 165 public boolean equalsIgnoreCase(Buffer b) |
| 166 { | |
| 167 if (b==this) | |
| 168 return true; | |
| 169 | |
| 170 // reject different lengths | |
| 171 if (b.length() != length()) return false; | |
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172 |
| 1005 | 173 // reject AbstractBuffer with different hash value |
| 174 if (_hash != 0 && b instanceof AbstractBuffer) | |
| 175 { | |
| 176 AbstractBuffer ab = (AbstractBuffer) b; | |
| 177 if (ab._hash != 0 && _hash != ab._hash) return false; | |
| 178 } | |
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179 |
| 1005 | 180 // Nothing for it but to do the hard grind. |
| 181 int get=getIndex(); | |
| 182 int bi=b.putIndex(); | |
| 183 | |
| 184 byte[] array = array(); | |
| 185 byte[] barray= b.array(); | |
| 186 if (array!=null && barray!=null) | |
| 187 { | |
| 188 for (int i = putIndex(); i-->get;) | |
| 189 { | |
| 190 byte b1 = array[i]; | |
| 191 byte b2 = barray[--bi]; | |
| 192 if (b1 != b2) | |
| 193 { | |
| 194 if ('a' <= b1 && b1 <= 'z') b1 = (byte) (b1 - 'a' + 'A'); | |
| 195 if ('a' <= b2 && b2 <= 'z') b2 = (byte) (b2 - 'a' + 'A'); | |
| 196 if (b1 != b2) return false; | |
| 197 } | |
| 198 } | |
| 199 } | |
| 200 else | |
| 201 { | |
| 202 for (int i = putIndex(); i-->get;) | |
| 203 { | |
| 204 byte b1 = peek(i); | |
| 205 byte b2 = b.peek(--bi); | |
| 206 if (b1 != b2) | |
| 207 { | |
| 208 if ('a' <= b1 && b1 <= 'z') b1 = (byte) (b1 - 'a' + 'A'); | |
| 209 if ('a' <= b2 && b2 <= 'z') b2 = (byte) (b2 - 'a' + 'A'); | |
| 210 if (b1 != b2) return false; | |
| 211 } | |
| 212 } | |
| 213 } | |
| 214 return true; | |
| 215 } | |
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216 |
| 1005 | 217 public byte get() |
| 218 { | |
| 219 return peek(_get++); | |
| 220 } | |
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221 |
| 1005 | 222 public int get(byte[] b, int offset, int length) |
| 223 { | |
| 224 int gi = getIndex(); | |
| 225 int l=length(); | |
| 226 if (l==0) | |
| 227 return -1; | |
| 228 | |
| 229 if (length>l) | |
| 230 length=l; | |
| 231 | |
| 232 length = peek(gi, b, offset, length); | |
| 233 if (length>0) | |
| 234 setGetIndex(gi + length); | |
| 235 return length; | |
| 236 } | |
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237 |
| 1005 | 238 public Buffer get(int length) |
| 239 { | |
| 240 int gi = getIndex(); | |
| 241 Buffer view = peek(gi, length); | |
| 242 setGetIndex(gi + length); | |
| 243 return view; | |
| 244 } | |
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245 |
| 1005 | 246 public final int getIndex() |
| 247 { | |
| 248 return _get; | |
| 249 } | |
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250 |
| 1005 | 251 public boolean hasContent() |
| 252 { | |
| 253 return _put > _get; | |
| 254 } | |
| 255 | |
| 256 @Override | |
| 257 public int hashCode() | |
| 258 { | |
| 259 if (_hash == 0 || _hashGet!=_get || _hashPut!=_put) | |
| 260 { | |
| 261 int get=getIndex(); | |
| 262 byte[] array = array(); | |
| 263 if (array==null) | |
| 264 { | |
| 265 for (int i = putIndex(); i-- >get;) | |
| 266 { | |
| 267 byte b = peek(i); | |
| 268 if ('a' <= b && b <= 'z') | |
| 269 b = (byte) (b - 'a' + 'A'); | |
| 270 _hash = 31 * _hash + b; | |
| 271 } | |
| 272 } | |
| 273 else | |
| 274 { | |
| 275 for (int i = putIndex(); i-- >get;) | |
| 276 { | |
| 277 byte b = array[i]; | |
| 278 if ('a' <= b && b <= 'z') | |
| 279 b = (byte) (b - 'a' + 'A'); | |
| 280 _hash = 31 * _hash + b; | |
| 281 } | |
| 282 } | |
| 283 if (_hash == 0) | |
| 284 _hash = -1; | |
| 285 _hashGet=_get; | |
| 286 _hashPut=_put; | |
| 287 | |
| 288 } | |
| 289 return _hash; | |
| 290 } | |
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291 |
| 1005 | 292 public boolean isImmutable() |
| 293 { | |
| 294 return _access <= IMMUTABLE; | |
| 295 } | |
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296 |
| 1005 | 297 public boolean isReadOnly() |
| 298 { | |
| 299 return _access <= READONLY; | |
| 300 } | |
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301 |
| 1005 | 302 public boolean isVolatile() |
| 303 { | |
| 304 return _volatile; | |
| 305 } | |
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306 |
| 1005 | 307 public int length() |
| 308 { | |
| 309 return _put - _get; | |
| 310 } | |
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311 |
| 1005 | 312 public void mark() |
| 313 { | |
| 314 setMarkIndex(_get - 1); | |
| 315 } | |
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316 |
| 1005 | 317 public void mark(int offset) |
| 318 { | |
| 319 setMarkIndex(_get + offset); | |
| 320 } | |
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321 |
| 1005 | 322 public int markIndex() |
| 323 { | |
| 324 return _mark; | |
| 325 } | |
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326 |
| 1005 | 327 public byte peek() |
| 328 { | |
| 329 return peek(_get); | |
| 330 } | |
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331 |
| 1005 | 332 public Buffer peek(int index, int length) |
| 333 { | |
| 334 if (_view == null) | |
| 335 { | |
| 336 _view = new View(this, -1, index, index + length, isReadOnly() ? READONLY : READWRITE); | |
| 337 } | |
| 338 else | |
| 339 { | |
| 340 _view.update(this.buffer()); | |
| 341 _view.setMarkIndex(-1); | |
| 342 _view.setGetIndex(0); | |
| 343 _view.setPutIndex(index + length); | |
| 344 _view.setGetIndex(index); | |
| 345 | |
| 346 } | |
| 347 return _view; | |
| 348 } | |
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349 |
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350 @Override |
| 1005 | 351 public int poke(int index, Buffer src) |
| 352 { | |
| 353 _hash=0; | |
| 354 /* | |
| 355 if (isReadOnly()) | |
| 356 throw new IllegalStateException(__READONLY); | |
| 357 if (index < 0) | |
| 358 throw new IllegalArgumentException("index<0: " + index + "<0"); | |
| 359 */ | |
| 360 | |
| 361 int length=src.length(); | |
| 362 if (index + length > capacity()) | |
| 363 { | |
| 364 length=capacity()-index; | |
| 365 /* | |
| 366 if (length<0) | |
| 367 throw new IllegalArgumentException("index>capacity(): " + index + ">" + capacity()); | |
| 368 */ | |
| 369 } | |
| 370 | |
| 371 byte[] src_array = src.array(); | |
| 372 byte[] dst_array = array(); | |
| 373 if (src_array != null && dst_array != null) | |
| 374 System.arraycopy(src_array, src.getIndex(), dst_array, index, length); | |
| 375 else if (src_array != null) | |
| 376 { | |
| 377 int s=src.getIndex(); | |
| 378 for (int i=0;i<length;i++) | |
| 379 poke(index++,src_array[s++]); | |
| 380 } | |
| 381 else if (dst_array != null) | |
| 382 { | |
| 383 int s=src.getIndex(); | |
| 384 for (int i=0;i<length;i++) | |
| 385 dst_array[index++]=src.peek(s++); | |
| 386 } | |
| 387 else | |
| 388 { | |
| 389 int s=src.getIndex(); | |
| 390 for (int i=0;i<length;i++) | |
| 391 poke(index++,src.peek(s++)); | |
| 392 } | |
| 393 | |
| 394 return length; | |
| 395 } | |
| 396 | |
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397 |
| 1005 | 398 public int poke(int index, byte[] b, int offset, int length) |
| 399 { | |
| 400 _hash=0; | |
| 401 /* | |
| 402 if (isReadOnly()) | |
| 403 throw new IllegalStateException(__READONLY); | |
| 404 if (index < 0) | |
| 405 throw new IllegalArgumentException("index<0: " + index + "<0"); | |
| 406 */ | |
| 407 if (index + length > capacity()) | |
| 408 { | |
| 409 length=capacity()-index; | |
| 410 /* if (length<0) | |
| 411 throw new IllegalArgumentException("index>capacity(): " + index + ">" + capacity()); | |
| 412 */ | |
| 413 } | |
| 414 | |
| 415 byte[] dst_array = array(); | |
| 416 if (dst_array != null) | |
| 417 System.arraycopy(b, offset, dst_array, index, length); | |
| 418 else | |
| 419 { | |
| 420 int s=offset; | |
| 421 for (int i=0;i<length;i++) | |
| 422 poke(index++,b[s++]); | |
| 423 } | |
| 424 return length; | |
| 425 } | |
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426 |
| 1005 | 427 public int put(Buffer src) |
| 428 { | |
| 429 int pi = putIndex(); | |
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430 int l = poke(pi, src); |
| 1005 | 431 setPutIndex(pi + l); |
| 432 return l; | |
| 433 } | |
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434 |
| 1005 | 435 public void put(byte b) |
| 436 { | |
| 437 int pi = putIndex(); | |
| 438 poke(pi, b); | |
| 439 setPutIndex(pi + 1); | |
| 440 } | |
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441 |
| 1005 | 442 public int put(byte[] b, int offset, int length) |
| 443 { | |
| 444 int pi = putIndex(); | |
| 445 int l = poke(pi, b, offset, length); | |
| 446 setPutIndex(pi + l); | |
| 447 return l; | |
| 448 } | |
| 449 | |
| 450 public int put(byte[] b) | |
| 451 { | |
| 452 int pi = putIndex(); | |
| 453 int l = poke(pi, b, 0, b.length); | |
| 454 setPutIndex(pi + l); | |
| 455 return l; | |
| 456 } | |
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457 |
| 1005 | 458 public final int putIndex() |
| 459 { | |
| 460 return _put; | |
| 461 } | |
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462 |
| 1005 | 463 public void reset() |
| 464 { | |
| 465 if (markIndex() >= 0) setGetIndex(markIndex()); | |
| 466 } | |
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467 |
| 1005 | 468 public void rewind() |
| 469 { | |
| 470 setGetIndex(0); | |
| 471 setMarkIndex(-1); | |
| 472 } | |
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473 |
| 1005 | 474 public void setGetIndex(int getIndex) |
| 475 { | |
| 476 /* bounds checking | |
| 477 if (isImmutable()) | |
| 478 throw new IllegalStateException(__IMMUTABLE); | |
| 479 if (getIndex < 0) | |
| 480 throw new IllegalArgumentException("getIndex<0: " + getIndex + "<0"); | |
| 481 if (getIndex > putIndex()) | |
| 482 throw new IllegalArgumentException("getIndex>putIndex: " + getIndex + ">" + putIndex()); | |
| 483 */ | |
| 484 _get = getIndex; | |
| 485 _hash=0; | |
| 486 } | |
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487 |
| 1005 | 488 public void setMarkIndex(int index) |
| 489 { | |
| 490 /* | |
| 491 if (index>=0 && isImmutable()) | |
| 492 throw new IllegalStateException(__IMMUTABLE); | |
| 493 */ | |
| 494 _mark = index; | |
| 495 } | |
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496 |
| 1005 | 497 public void setPutIndex(int putIndex) |
| 498 { | |
| 499 /* bounds checking | |
| 500 if (isImmutable()) | |
| 501 throw new IllegalStateException(__IMMUTABLE); | |
| 502 if (putIndex > capacity()) | |
| 503 throw new IllegalArgumentException("putIndex>capacity: " + putIndex + ">" + capacity()); | |
| 504 if (getIndex() > putIndex) | |
| 505 throw new IllegalArgumentException("getIndex>putIndex: " + getIndex() + ">" + putIndex); | |
| 506 */ | |
| 507 _put = putIndex; | |
| 508 _hash=0; | |
| 509 } | |
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510 |
| 1005 | 511 public int skip(int n) |
| 512 { | |
| 513 if (length() < n) n = length(); | |
| 514 setGetIndex(getIndex() + n); | |
| 515 return n; | |
| 516 } | |
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517 |
| 1005 | 518 public Buffer slice() |
| 519 { | |
| 520 return peek(getIndex(), length()); | |
| 521 } | |
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522 |
| 1005 | 523 public Buffer sliceFromMark() |
| 524 { | |
| 525 return sliceFromMark(getIndex() - markIndex() - 1); | |
| 526 } | |
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527 |
| 1005 | 528 public Buffer sliceFromMark(int length) |
| 529 { | |
| 530 if (markIndex() < 0) return null; | |
| 531 Buffer view = peek(markIndex(), length); | |
| 532 setMarkIndex(-1); | |
| 533 return view; | |
| 534 } | |
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535 |
| 1005 | 536 public int space() |
| 537 { | |
| 538 return capacity() - _put; | |
| 539 } | |
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540 |
| 1005 | 541 public String toDetailString() |
| 542 { | |
| 543 StringBuilder buf = new StringBuilder(); | |
| 544 buf.append("["); | |
| 545 buf.append(super.hashCode()); | |
| 546 buf.append(","); | |
| 547 buf.append(this.buffer().hashCode()); | |
| 548 buf.append(",m="); | |
| 549 buf.append(markIndex()); | |
| 550 buf.append(",g="); | |
| 551 buf.append(getIndex()); | |
| 552 buf.append(",p="); | |
| 553 buf.append(putIndex()); | |
| 554 buf.append(",c="); | |
| 555 buf.append(capacity()); | |
| 556 buf.append("]={"); | |
| 557 if (markIndex() >= 0) | |
| 558 { | |
| 559 for (int i = markIndex(); i < getIndex(); i++) | |
| 560 { | |
| 561 byte b = peek(i); | |
| 562 TypeUtil.toHex(b,buf); | |
| 563 } | |
| 564 buf.append("}{"); | |
| 565 } | |
| 566 int count = 0; | |
| 567 for (int i = getIndex(); i < putIndex(); i++) | |
| 568 { | |
| 569 byte b = peek(i); | |
| 570 TypeUtil.toHex(b,buf); | |
| 571 if (count++ == 50) | |
| 572 { | |
| 573 if (putIndex() - i > 20) | |
| 574 { | |
| 575 buf.append(" ... "); | |
| 576 i = putIndex() - 20; | |
| 577 } | |
| 578 } | |
| 579 } | |
| 580 buf.append('}'); | |
| 581 return buf.toString(); | |
| 582 } | |
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583 |
| 1005 | 584 @Override |
| 585 public String toString() | |
| 586 { | |
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587 /* |
| 1005 | 588 if (isImmutable()) |
| 589 { | |
| 590 if (_string == null) | |
| 591 _string = new String(asArray(), 0, length()); | |
| 592 return _string; | |
| 593 } | |
| 594 return new String(asArray(), 0, length()); | |
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595 */ |
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596 return toString("ISO-8859-1"); |
| 1005 | 597 } |
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598 |
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599 @Override |
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600 public final String toString(String charset) |
| 1005 | 601 { |
| 602 try | |
| 603 { | |
| 604 byte[] bytes=array(); | |
| 605 if (bytes!=null) | |
| 606 return new String(bytes,getIndex(),length(),charset); | |
| 607 return new String(asArray(), 0, length(),charset); | |
| 608 | |
| 609 } | |
| 610 catch(Exception e) | |
| 611 { | |
| 612 LOG.warn("",e); | |
| 613 return new String(asArray(), 0, length()); | |
| 614 } | |
| 615 } | |
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616 |
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617 @Override |
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618 public final String toString(Charset charset) |
| 1005 | 619 { |
| 620 try | |
| 621 { | |
| 622 byte[] bytes=array(); | |
| 623 if (bytes!=null) | |
| 624 return new String(bytes,getIndex(),length(),charset); | |
| 625 return new String(asArray(), 0, length(),charset); | |
| 626 } | |
| 627 catch(Exception e) | |
| 628 { | |
| 629 LOG.warn("",e); | |
| 630 return new String(asArray(), 0, length()); | |
| 631 } | |
| 632 } | |
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633 |
| 1005 | 634 /* ------------------------------------------------------------ */ |
| 635 public String toDebugString() | |
| 636 { | |
| 637 return getClass()+"@"+super.hashCode(); | |
| 638 } | |
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639 |
| 1005 | 640 /* ------------------------------------------------------------ */ |
| 641 public int readFrom(InputStream in,int max) throws IOException | |
| 642 { | |
| 643 byte[] array = array(); | |
| 644 int s=space(); | |
| 645 if (s>max) | |
| 646 s=max; | |
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647 |
| 1005 | 648 if (array!=null) |
| 649 { | |
| 650 int l=in.read(array,_put,s); | |
| 651 if (l>0) | |
| 652 _put+=l; | |
| 653 return l; | |
| 654 } | |
| 655 else | |
| 656 { | |
| 657 byte[] buf=new byte[s>1024?1024:s]; | |
| 658 int total=0; | |
| 659 while (s>0) | |
| 660 { | |
| 661 int l=in.read(buf,0,buf.length); | |
| 662 if (l<0) | |
| 663 return total>0?total:-1; | |
| 664 int p=put(buf,0,l); | |
| 665 assert l==p; | |
| 666 s-=l; | |
| 667 } | |
| 668 return total; | |
| 669 } | |
| 670 } | |
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671 } |