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annotate src/org/eclipse/jetty/io/AbstractBuffer.java @ 1029:4e5e9e3c25b3
remove Buffer.equalsIgnoreCase()
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Thu, 03 Nov 2016 00:55:20 -0600 |
| parents | 6d17a257b03f |
| children | 80cad9086593 |
| 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 byte get() |
| 166 { | |
| 167 return peek(_get++); | |
| 168 } | |
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169 |
| 1005 | 170 public int get(byte[] b, int offset, int length) |
| 171 { | |
| 172 int gi = getIndex(); | |
| 173 int l=length(); | |
| 174 if (l==0) | |
| 175 return -1; | |
| 176 | |
| 177 if (length>l) | |
| 178 length=l; | |
| 179 | |
| 180 length = peek(gi, b, offset, length); | |
| 181 if (length>0) | |
| 182 setGetIndex(gi + length); | |
| 183 return length; | |
| 184 } | |
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185 |
| 1005 | 186 public Buffer get(int length) |
| 187 { | |
| 188 int gi = getIndex(); | |
| 189 Buffer view = peek(gi, length); | |
| 190 setGetIndex(gi + length); | |
| 191 return view; | |
| 192 } | |
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193 |
| 1005 | 194 public final int getIndex() |
| 195 { | |
| 196 return _get; | |
| 197 } | |
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198 |
| 1005 | 199 public boolean hasContent() |
| 200 { | |
| 201 return _put > _get; | |
| 202 } | |
| 203 | |
| 204 @Override | |
| 205 public int hashCode() | |
| 206 { | |
| 207 if (_hash == 0 || _hashGet!=_get || _hashPut!=_put) | |
| 208 { | |
| 209 int get=getIndex(); | |
| 210 byte[] array = array(); | |
| 211 if (array==null) | |
| 212 { | |
| 213 for (int i = putIndex(); i-- >get;) | |
| 214 { | |
| 215 byte b = peek(i); | |
| 216 if ('a' <= b && b <= 'z') | |
| 217 b = (byte) (b - 'a' + 'A'); | |
| 218 _hash = 31 * _hash + b; | |
| 219 } | |
| 220 } | |
| 221 else | |
| 222 { | |
| 223 for (int i = putIndex(); i-- >get;) | |
| 224 { | |
| 225 byte b = array[i]; | |
| 226 if ('a' <= b && b <= 'z') | |
| 227 b = (byte) (b - 'a' + 'A'); | |
| 228 _hash = 31 * _hash + b; | |
| 229 } | |
| 230 } | |
| 231 if (_hash == 0) | |
| 232 _hash = -1; | |
| 233 _hashGet=_get; | |
| 234 _hashPut=_put; | |
| 235 | |
| 236 } | |
| 237 return _hash; | |
| 238 } | |
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239 |
| 1005 | 240 public boolean isImmutable() |
| 241 { | |
| 242 return _access <= IMMUTABLE; | |
| 243 } | |
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244 |
| 1005 | 245 public boolean isReadOnly() |
| 246 { | |
| 247 return _access <= READONLY; | |
| 248 } | |
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249 |
| 1005 | 250 public boolean isVolatile() |
| 251 { | |
| 252 return _volatile; | |
| 253 } | |
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254 |
| 1005 | 255 public int length() |
| 256 { | |
| 257 return _put - _get; | |
| 258 } | |
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259 |
| 1005 | 260 public void mark() |
| 261 { | |
| 262 setMarkIndex(_get - 1); | |
| 263 } | |
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264 |
| 1005 | 265 public void mark(int offset) |
| 266 { | |
| 267 setMarkIndex(_get + offset); | |
| 268 } | |
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269 |
| 1005 | 270 public int markIndex() |
| 271 { | |
| 272 return _mark; | |
| 273 } | |
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274 |
| 1005 | 275 public byte peek() |
| 276 { | |
| 277 return peek(_get); | |
| 278 } | |
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279 |
| 1005 | 280 public Buffer peek(int index, int length) |
| 281 { | |
| 282 if (_view == null) | |
| 283 { | |
| 284 _view = new View(this, -1, index, index + length, isReadOnly() ? READONLY : READWRITE); | |
| 285 } | |
| 286 else | |
| 287 { | |
| 288 _view.update(this.buffer()); | |
| 289 _view.setMarkIndex(-1); | |
| 290 _view.setGetIndex(0); | |
| 291 _view.setPutIndex(index + length); | |
| 292 _view.setGetIndex(index); | |
| 293 | |
| 294 } | |
| 295 return _view; | |
| 296 } | |
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297 |
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298 @Override |
| 1005 | 299 public int poke(int index, Buffer src) |
| 300 { | |
| 301 _hash=0; | |
| 302 /* | |
| 303 if (isReadOnly()) | |
| 304 throw new IllegalStateException(__READONLY); | |
| 305 if (index < 0) | |
| 306 throw new IllegalArgumentException("index<0: " + index + "<0"); | |
| 307 */ | |
| 308 | |
| 309 int length=src.length(); | |
| 310 if (index + length > capacity()) | |
| 311 { | |
| 312 length=capacity()-index; | |
| 313 /* | |
| 314 if (length<0) | |
| 315 throw new IllegalArgumentException("index>capacity(): " + index + ">" + capacity()); | |
| 316 */ | |
| 317 } | |
| 318 | |
| 319 byte[] src_array = src.array(); | |
| 320 byte[] dst_array = array(); | |
| 321 if (src_array != null && dst_array != null) | |
| 322 System.arraycopy(src_array, src.getIndex(), dst_array, index, length); | |
| 323 else if (src_array != null) | |
| 324 { | |
| 325 int s=src.getIndex(); | |
| 326 for (int i=0;i<length;i++) | |
| 327 poke(index++,src_array[s++]); | |
| 328 } | |
| 329 else if (dst_array != null) | |
| 330 { | |
| 331 int s=src.getIndex(); | |
| 332 for (int i=0;i<length;i++) | |
| 333 dst_array[index++]=src.peek(s++); | |
| 334 } | |
| 335 else | |
| 336 { | |
| 337 int s=src.getIndex(); | |
| 338 for (int i=0;i<length;i++) | |
| 339 poke(index++,src.peek(s++)); | |
| 340 } | |
| 341 | |
| 342 return length; | |
| 343 } | |
| 344 | |
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345 |
| 1005 | 346 public int poke(int index, byte[] b, int offset, int length) |
| 347 { | |
| 348 _hash=0; | |
| 349 /* | |
| 350 if (isReadOnly()) | |
| 351 throw new IllegalStateException(__READONLY); | |
| 352 if (index < 0) | |
| 353 throw new IllegalArgumentException("index<0: " + index + "<0"); | |
| 354 */ | |
| 355 if (index + length > capacity()) | |
| 356 { | |
| 357 length=capacity()-index; | |
| 358 /* if (length<0) | |
| 359 throw new IllegalArgumentException("index>capacity(): " + index + ">" + capacity()); | |
| 360 */ | |
| 361 } | |
| 362 | |
| 363 byte[] dst_array = array(); | |
| 364 if (dst_array != null) | |
| 365 System.arraycopy(b, offset, dst_array, index, length); | |
| 366 else | |
| 367 { | |
| 368 int s=offset; | |
| 369 for (int i=0;i<length;i++) | |
| 370 poke(index++,b[s++]); | |
| 371 } | |
| 372 return length; | |
| 373 } | |
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374 |
| 1005 | 375 public int put(Buffer src) |
| 376 { | |
| 377 int pi = putIndex(); | |
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378 int l = poke(pi, src); |
| 1005 | 379 setPutIndex(pi + l); |
| 380 return l; | |
| 381 } | |
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382 |
| 1005 | 383 public void put(byte b) |
| 384 { | |
| 385 int pi = putIndex(); | |
| 386 poke(pi, b); | |
| 387 setPutIndex(pi + 1); | |
| 388 } | |
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389 |
| 1005 | 390 public int put(byte[] b, int offset, int length) |
| 391 { | |
| 392 int pi = putIndex(); | |
| 393 int l = poke(pi, b, offset, length); | |
| 394 setPutIndex(pi + l); | |
| 395 return l; | |
| 396 } | |
| 397 | |
| 398 public int put(byte[] b) | |
| 399 { | |
| 400 int pi = putIndex(); | |
| 401 int l = poke(pi, b, 0, b.length); | |
| 402 setPutIndex(pi + l); | |
| 403 return l; | |
| 404 } | |
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405 |
| 1005 | 406 public final int putIndex() |
| 407 { | |
| 408 return _put; | |
| 409 } | |
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410 |
| 1005 | 411 public void reset() |
| 412 { | |
| 413 if (markIndex() >= 0) setGetIndex(markIndex()); | |
| 414 } | |
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415 |
| 1005 | 416 public void rewind() |
| 417 { | |
| 418 setGetIndex(0); | |
| 419 setMarkIndex(-1); | |
| 420 } | |
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421 |
| 1005 | 422 public void setGetIndex(int getIndex) |
| 423 { | |
| 424 /* bounds checking | |
| 425 if (isImmutable()) | |
| 426 throw new IllegalStateException(__IMMUTABLE); | |
| 427 if (getIndex < 0) | |
| 428 throw new IllegalArgumentException("getIndex<0: " + getIndex + "<0"); | |
| 429 if (getIndex > putIndex()) | |
| 430 throw new IllegalArgumentException("getIndex>putIndex: " + getIndex + ">" + putIndex()); | |
| 431 */ | |
| 432 _get = getIndex; | |
| 433 _hash=0; | |
| 434 } | |
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435 |
| 1005 | 436 public void setMarkIndex(int index) |
| 437 { | |
| 438 /* | |
| 439 if (index>=0 && isImmutable()) | |
| 440 throw new IllegalStateException(__IMMUTABLE); | |
| 441 */ | |
| 442 _mark = index; | |
| 443 } | |
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444 |
| 1005 | 445 public void setPutIndex(int putIndex) |
| 446 { | |
| 447 /* bounds checking | |
| 448 if (isImmutable()) | |
| 449 throw new IllegalStateException(__IMMUTABLE); | |
| 450 if (putIndex > capacity()) | |
| 451 throw new IllegalArgumentException("putIndex>capacity: " + putIndex + ">" + capacity()); | |
| 452 if (getIndex() > putIndex) | |
| 453 throw new IllegalArgumentException("getIndex>putIndex: " + getIndex() + ">" + putIndex); | |
| 454 */ | |
| 455 _put = putIndex; | |
| 456 _hash=0; | |
| 457 } | |
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458 |
| 1005 | 459 public int skip(int n) |
| 460 { | |
| 461 if (length() < n) n = length(); | |
| 462 setGetIndex(getIndex() + n); | |
| 463 return n; | |
| 464 } | |
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465 |
| 1005 | 466 public Buffer slice() |
| 467 { | |
| 468 return peek(getIndex(), length()); | |
| 469 } | |
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470 |
| 1005 | 471 public Buffer sliceFromMark() |
| 472 { | |
| 473 return sliceFromMark(getIndex() - markIndex() - 1); | |
| 474 } | |
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475 |
| 1005 | 476 public Buffer sliceFromMark(int length) |
| 477 { | |
| 478 if (markIndex() < 0) return null; | |
| 479 Buffer view = peek(markIndex(), length); | |
| 480 setMarkIndex(-1); | |
| 481 return view; | |
| 482 } | |
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483 |
| 1005 | 484 public int space() |
| 485 { | |
| 486 return capacity() - _put; | |
| 487 } | |
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488 |
| 1005 | 489 public String toDetailString() |
| 490 { | |
| 491 StringBuilder buf = new StringBuilder(); | |
| 492 buf.append("["); | |
| 493 buf.append(super.hashCode()); | |
| 494 buf.append(","); | |
| 495 buf.append(this.buffer().hashCode()); | |
| 496 buf.append(",m="); | |
| 497 buf.append(markIndex()); | |
| 498 buf.append(",g="); | |
| 499 buf.append(getIndex()); | |
| 500 buf.append(",p="); | |
| 501 buf.append(putIndex()); | |
| 502 buf.append(",c="); | |
| 503 buf.append(capacity()); | |
| 504 buf.append("]={"); | |
| 505 if (markIndex() >= 0) | |
| 506 { | |
| 507 for (int i = markIndex(); i < getIndex(); i++) | |
| 508 { | |
| 509 byte b = peek(i); | |
| 510 TypeUtil.toHex(b,buf); | |
| 511 } | |
| 512 buf.append("}{"); | |
| 513 } | |
| 514 int count = 0; | |
| 515 for (int i = getIndex(); i < putIndex(); i++) | |
| 516 { | |
| 517 byte b = peek(i); | |
| 518 TypeUtil.toHex(b,buf); | |
| 519 if (count++ == 50) | |
| 520 { | |
| 521 if (putIndex() - i > 20) | |
| 522 { | |
| 523 buf.append(" ... "); | |
| 524 i = putIndex() - 20; | |
| 525 } | |
| 526 } | |
| 527 } | |
| 528 buf.append('}'); | |
| 529 return buf.toString(); | |
| 530 } | |
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531 |
| 1005 | 532 @Override |
| 533 public String toString() | |
| 534 { | |
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535 /* |
| 1005 | 536 if (isImmutable()) |
| 537 { | |
| 538 if (_string == null) | |
| 539 _string = new String(asArray(), 0, length()); | |
| 540 return _string; | |
| 541 } | |
| 542 return new String(asArray(), 0, length()); | |
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543 */ |
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544 return toString("ISO-8859-1"); |
| 1005 | 545 } |
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546 |
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547 @Override |
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548 public final String toString(String charset) |
| 1005 | 549 { |
| 550 try | |
| 551 { | |
| 552 byte[] bytes=array(); | |
| 553 if (bytes!=null) | |
| 554 return new String(bytes,getIndex(),length(),charset); | |
| 555 return new String(asArray(), 0, length(),charset); | |
| 556 | |
| 557 } | |
| 558 catch(Exception e) | |
| 559 { | |
| 560 LOG.warn("",e); | |
| 561 return new String(asArray(), 0, length()); | |
| 562 } | |
| 563 } | |
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564 |
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565 @Override |
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566 public final String toString(Charset charset) |
| 1005 | 567 { |
| 568 try | |
| 569 { | |
| 570 byte[] bytes=array(); | |
| 571 if (bytes!=null) | |
| 572 return new String(bytes,getIndex(),length(),charset); | |
| 573 return new String(asArray(), 0, length(),charset); | |
| 574 } | |
| 575 catch(Exception e) | |
| 576 { | |
| 577 LOG.warn("",e); | |
| 578 return new String(asArray(), 0, length()); | |
| 579 } | |
| 580 } | |
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581 |
| 1005 | 582 /* ------------------------------------------------------------ */ |
| 583 public String toDebugString() | |
| 584 { | |
| 585 return getClass()+"@"+super.hashCode(); | |
| 586 } | |
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587 |
| 1005 | 588 /* ------------------------------------------------------------ */ |
| 589 public int readFrom(InputStream in,int max) throws IOException | |
| 590 { | |
| 591 byte[] array = array(); | |
| 592 int s=space(); | |
| 593 if (s>max) | |
| 594 s=max; | |
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595 |
| 1005 | 596 if (array!=null) |
| 597 { | |
| 598 int l=in.read(array,_put,s); | |
| 599 if (l>0) | |
| 600 _put+=l; | |
| 601 return l; | |
| 602 } | |
| 603 else | |
| 604 { | |
| 605 byte[] buf=new byte[s>1024?1024:s]; | |
| 606 int total=0; | |
| 607 while (s>0) | |
| 608 { | |
| 609 int l=in.read(buf,0,buf.length); | |
| 610 if (l<0) | |
| 611 return total>0?total:-1; | |
| 612 int p=put(buf,0,l); | |
| 613 assert l==p; | |
| 614 s-=l; | |
| 615 } | |
| 616 return total; | |
| 617 } | |
| 618 } | |
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619 } |