Mercurial Hosting > luan
annotate src/org/eclipse/jetty/io/AbstractBuffer.java @ 1026:6647dbc8be71
remove Buffer.CaseInsensitve
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Wed, 02 Nov 2016 23:52:33 -0600 |
| parents | 6be43ef1eb96 |
| children | 6d17a257b03f |
| 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 public Buffer asImmutableBuffer() | |
| 92 { | |
| 93 if (isImmutable()) return this; | |
| 94 return duplicate(IMMUTABLE); | |
| 95 } | |
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96 |
| 1005 | 97 /* |
| 98 * @see org.eclipse.util.Buffer#asReadOnlyBuffer() | |
| 99 */ | |
| 100 public Buffer asReadOnlyBuffer() | |
| 101 { | |
| 102 if (isReadOnly()) return this; | |
| 103 return new View(this, markIndex(), getIndex(), putIndex(), READONLY); | |
| 104 } | |
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105 |
| 1005 | 106 public Buffer buffer() |
| 107 { | |
| 108 return this; | |
| 109 } | |
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110 |
| 1005 | 111 public void clear() |
| 112 { | |
| 113 setMarkIndex(-1); | |
| 114 setGetIndex(0); | |
| 115 setPutIndex(0); | |
| 116 } | |
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117 |
| 1005 | 118 public void compact() |
| 119 { | |
| 120 if (isReadOnly()) throw new IllegalStateException(__READONLY); | |
| 121 int s = markIndex() >= 0 ? markIndex() : getIndex(); | |
| 122 if (s > 0) | |
| 123 { | |
| 124 byte array[] = array(); | |
| 125 int length = putIndex() - s; | |
| 126 if (length > 0) | |
| 127 { | |
| 128 if (array != null) | |
| 129 System.arraycopy(array(), s, array(), 0, length); | |
| 130 else | |
| 131 poke(0, peek(s, length)); | |
| 132 } | |
| 133 if (markIndex() > 0) setMarkIndex(markIndex() - s); | |
| 134 setGetIndex(getIndex() - s); | |
| 135 setPutIndex(putIndex() - s); | |
| 136 } | |
| 137 } | |
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138 |
| 1005 | 139 @Override |
| 140 public boolean equals(Object obj) | |
| 141 { | |
| 142 if (obj==this) | |
| 143 return true; | |
| 144 | |
| 145 // reject non buffers; | |
| 146 if (obj == null || !(obj instanceof Buffer)) return false; | |
| 147 Buffer b = (Buffer) obj; | |
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148 |
| 1005 | 149 // reject different lengths |
| 150 if (b.length() != length()) return false; | |
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151 |
| 1005 | 152 // reject AbstractBuffer with different hash value |
| 153 if (_hash != 0 && obj instanceof AbstractBuffer) | |
| 154 { | |
| 155 AbstractBuffer ab = (AbstractBuffer) obj; | |
| 156 if (ab._hash != 0 && _hash != ab._hash) return false; | |
| 157 } | |
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158 |
| 1005 | 159 // Nothing for it but to do the hard grind. |
| 160 int get=getIndex(); | |
| 161 int bi=b.putIndex(); | |
| 162 for (int i = putIndex(); i-->get;) | |
| 163 { | |
| 164 byte b1 = peek(i); | |
| 165 byte b2 = b.peek(--bi); | |
| 166 if (b1 != b2) return false; | |
| 167 } | |
| 168 return true; | |
| 169 } | |
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170 |
| 1005 | 171 public boolean equalsIgnoreCase(Buffer b) |
| 172 { | |
| 173 if (b==this) | |
| 174 return true; | |
| 175 | |
| 176 // reject different lengths | |
| 177 if (b.length() != length()) return false; | |
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178 |
| 1005 | 179 // reject AbstractBuffer with different hash value |
| 180 if (_hash != 0 && b instanceof AbstractBuffer) | |
| 181 { | |
| 182 AbstractBuffer ab = (AbstractBuffer) b; | |
| 183 if (ab._hash != 0 && _hash != ab._hash) return false; | |
| 184 } | |
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185 |
| 1005 | 186 // Nothing for it but to do the hard grind. |
| 187 int get=getIndex(); | |
| 188 int bi=b.putIndex(); | |
| 189 | |
| 190 byte[] array = array(); | |
| 191 byte[] barray= b.array(); | |
| 192 if (array!=null && barray!=null) | |
| 193 { | |
| 194 for (int i = putIndex(); i-->get;) | |
| 195 { | |
| 196 byte b1 = array[i]; | |
| 197 byte b2 = barray[--bi]; | |
| 198 if (b1 != b2) | |
| 199 { | |
| 200 if ('a' <= b1 && b1 <= 'z') b1 = (byte) (b1 - 'a' + 'A'); | |
| 201 if ('a' <= b2 && b2 <= 'z') b2 = (byte) (b2 - 'a' + 'A'); | |
| 202 if (b1 != b2) return false; | |
| 203 } | |
| 204 } | |
| 205 } | |
| 206 else | |
| 207 { | |
| 208 for (int i = putIndex(); i-->get;) | |
| 209 { | |
| 210 byte b1 = peek(i); | |
| 211 byte b2 = b.peek(--bi); | |
| 212 if (b1 != b2) | |
| 213 { | |
| 214 if ('a' <= b1 && b1 <= 'z') b1 = (byte) (b1 - 'a' + 'A'); | |
| 215 if ('a' <= b2 && b2 <= 'z') b2 = (byte) (b2 - 'a' + 'A'); | |
| 216 if (b1 != b2) return false; | |
| 217 } | |
| 218 } | |
| 219 } | |
| 220 return true; | |
| 221 } | |
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222 |
| 1005 | 223 public byte get() |
| 224 { | |
| 225 return peek(_get++); | |
| 226 } | |
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227 |
| 1005 | 228 public int get(byte[] b, int offset, int length) |
| 229 { | |
| 230 int gi = getIndex(); | |
| 231 int l=length(); | |
| 232 if (l==0) | |
| 233 return -1; | |
| 234 | |
| 235 if (length>l) | |
| 236 length=l; | |
| 237 | |
| 238 length = peek(gi, b, offset, length); | |
| 239 if (length>0) | |
| 240 setGetIndex(gi + length); | |
| 241 return length; | |
| 242 } | |
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243 |
| 1005 | 244 public Buffer get(int length) |
| 245 { | |
| 246 int gi = getIndex(); | |
| 247 Buffer view = peek(gi, length); | |
| 248 setGetIndex(gi + length); | |
| 249 return view; | |
| 250 } | |
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251 |
| 1005 | 252 public final int getIndex() |
| 253 { | |
| 254 return _get; | |
| 255 } | |
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256 |
| 1005 | 257 public boolean hasContent() |
| 258 { | |
| 259 return _put > _get; | |
| 260 } | |
| 261 | |
| 262 @Override | |
| 263 public int hashCode() | |
| 264 { | |
| 265 if (_hash == 0 || _hashGet!=_get || _hashPut!=_put) | |
| 266 { | |
| 267 int get=getIndex(); | |
| 268 byte[] array = array(); | |
| 269 if (array==null) | |
| 270 { | |
| 271 for (int i = putIndex(); i-- >get;) | |
| 272 { | |
| 273 byte b = peek(i); | |
| 274 if ('a' <= b && b <= 'z') | |
| 275 b = (byte) (b - 'a' + 'A'); | |
| 276 _hash = 31 * _hash + b; | |
| 277 } | |
| 278 } | |
| 279 else | |
| 280 { | |
| 281 for (int i = putIndex(); i-- >get;) | |
| 282 { | |
| 283 byte b = array[i]; | |
| 284 if ('a' <= b && b <= 'z') | |
| 285 b = (byte) (b - 'a' + 'A'); | |
| 286 _hash = 31 * _hash + b; | |
| 287 } | |
| 288 } | |
| 289 if (_hash == 0) | |
| 290 _hash = -1; | |
| 291 _hashGet=_get; | |
| 292 _hashPut=_put; | |
| 293 | |
| 294 } | |
| 295 return _hash; | |
| 296 } | |
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297 |
| 1005 | 298 public boolean isImmutable() |
| 299 { | |
| 300 return _access <= IMMUTABLE; | |
| 301 } | |
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302 |
| 1005 | 303 public boolean isReadOnly() |
| 304 { | |
| 305 return _access <= READONLY; | |
| 306 } | |
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307 |
| 1005 | 308 public boolean isVolatile() |
| 309 { | |
| 310 return _volatile; | |
| 311 } | |
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312 |
| 1005 | 313 public int length() |
| 314 { | |
| 315 return _put - _get; | |
| 316 } | |
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317 |
| 1005 | 318 public void mark() |
| 319 { | |
| 320 setMarkIndex(_get - 1); | |
| 321 } | |
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322 |
| 1005 | 323 public void mark(int offset) |
| 324 { | |
| 325 setMarkIndex(_get + offset); | |
| 326 } | |
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327 |
| 1005 | 328 public int markIndex() |
| 329 { | |
| 330 return _mark; | |
| 331 } | |
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332 |
| 1005 | 333 public byte peek() |
| 334 { | |
| 335 return peek(_get); | |
| 336 } | |
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337 |
| 1005 | 338 public Buffer peek(int index, int length) |
| 339 { | |
| 340 if (_view == null) | |
| 341 { | |
| 342 _view = new View(this, -1, index, index + length, isReadOnly() ? READONLY : READWRITE); | |
| 343 } | |
| 344 else | |
| 345 { | |
| 346 _view.update(this.buffer()); | |
| 347 _view.setMarkIndex(-1); | |
| 348 _view.setGetIndex(0); | |
| 349 _view.setPutIndex(index + length); | |
| 350 _view.setGetIndex(index); | |
| 351 | |
| 352 } | |
| 353 return _view; | |
| 354 } | |
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355 |
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356 @Override |
| 1005 | 357 public int poke(int index, Buffer src) |
| 358 { | |
| 359 _hash=0; | |
| 360 /* | |
| 361 if (isReadOnly()) | |
| 362 throw new IllegalStateException(__READONLY); | |
| 363 if (index < 0) | |
| 364 throw new IllegalArgumentException("index<0: " + index + "<0"); | |
| 365 */ | |
| 366 | |
| 367 int length=src.length(); | |
| 368 if (index + length > capacity()) | |
| 369 { | |
| 370 length=capacity()-index; | |
| 371 /* | |
| 372 if (length<0) | |
| 373 throw new IllegalArgumentException("index>capacity(): " + index + ">" + capacity()); | |
| 374 */ | |
| 375 } | |
| 376 | |
| 377 byte[] src_array = src.array(); | |
| 378 byte[] dst_array = array(); | |
| 379 if (src_array != null && dst_array != null) | |
| 380 System.arraycopy(src_array, src.getIndex(), dst_array, index, length); | |
| 381 else if (src_array != null) | |
| 382 { | |
| 383 int s=src.getIndex(); | |
| 384 for (int i=0;i<length;i++) | |
| 385 poke(index++,src_array[s++]); | |
| 386 } | |
| 387 else if (dst_array != null) | |
| 388 { | |
| 389 int s=src.getIndex(); | |
| 390 for (int i=0;i<length;i++) | |
| 391 dst_array[index++]=src.peek(s++); | |
| 392 } | |
| 393 else | |
| 394 { | |
| 395 int s=src.getIndex(); | |
| 396 for (int i=0;i<length;i++) | |
| 397 poke(index++,src.peek(s++)); | |
| 398 } | |
| 399 | |
| 400 return length; | |
| 401 } | |
| 402 | |
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403 |
| 1005 | 404 public int poke(int index, byte[] b, int offset, int length) |
| 405 { | |
| 406 _hash=0; | |
| 407 /* | |
| 408 if (isReadOnly()) | |
| 409 throw new IllegalStateException(__READONLY); | |
| 410 if (index < 0) | |
| 411 throw new IllegalArgumentException("index<0: " + index + "<0"); | |
| 412 */ | |
| 413 if (index + length > capacity()) | |
| 414 { | |
| 415 length=capacity()-index; | |
| 416 /* if (length<0) | |
| 417 throw new IllegalArgumentException("index>capacity(): " + index + ">" + capacity()); | |
| 418 */ | |
| 419 } | |
| 420 | |
| 421 byte[] dst_array = array(); | |
| 422 if (dst_array != null) | |
| 423 System.arraycopy(b, offset, dst_array, index, length); | |
| 424 else | |
| 425 { | |
| 426 int s=offset; | |
| 427 for (int i=0;i<length;i++) | |
| 428 poke(index++,b[s++]); | |
| 429 } | |
| 430 return length; | |
| 431 } | |
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432 |
| 1005 | 433 public int put(Buffer src) |
| 434 { | |
| 435 int pi = putIndex(); | |
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436 int l = poke(pi, src); |
| 1005 | 437 setPutIndex(pi + l); |
| 438 return l; | |
| 439 } | |
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440 |
| 1005 | 441 public void put(byte b) |
| 442 { | |
| 443 int pi = putIndex(); | |
| 444 poke(pi, b); | |
| 445 setPutIndex(pi + 1); | |
| 446 } | |
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447 |
| 1005 | 448 public int put(byte[] b, int offset, int length) |
| 449 { | |
| 450 int pi = putIndex(); | |
| 451 int l = poke(pi, b, offset, length); | |
| 452 setPutIndex(pi + l); | |
| 453 return l; | |
| 454 } | |
| 455 | |
| 456 public int put(byte[] b) | |
| 457 { | |
| 458 int pi = putIndex(); | |
| 459 int l = poke(pi, b, 0, b.length); | |
| 460 setPutIndex(pi + l); | |
| 461 return l; | |
| 462 } | |
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463 |
| 1005 | 464 public final int putIndex() |
| 465 { | |
| 466 return _put; | |
| 467 } | |
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468 |
| 1005 | 469 public void reset() |
| 470 { | |
| 471 if (markIndex() >= 0) setGetIndex(markIndex()); | |
| 472 } | |
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473 |
| 1005 | 474 public void rewind() |
| 475 { | |
| 476 setGetIndex(0); | |
| 477 setMarkIndex(-1); | |
| 478 } | |
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479 |
| 1005 | 480 public void setGetIndex(int getIndex) |
| 481 { | |
| 482 /* bounds checking | |
| 483 if (isImmutable()) | |
| 484 throw new IllegalStateException(__IMMUTABLE); | |
| 485 if (getIndex < 0) | |
| 486 throw new IllegalArgumentException("getIndex<0: " + getIndex + "<0"); | |
| 487 if (getIndex > putIndex()) | |
| 488 throw new IllegalArgumentException("getIndex>putIndex: " + getIndex + ">" + putIndex()); | |
| 489 */ | |
| 490 _get = getIndex; | |
| 491 _hash=0; | |
| 492 } | |
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493 |
| 1005 | 494 public void setMarkIndex(int index) |
| 495 { | |
| 496 /* | |
| 497 if (index>=0 && isImmutable()) | |
| 498 throw new IllegalStateException(__IMMUTABLE); | |
| 499 */ | |
| 500 _mark = index; | |
| 501 } | |
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502 |
| 1005 | 503 public void setPutIndex(int putIndex) |
| 504 { | |
| 505 /* bounds checking | |
| 506 if (isImmutable()) | |
| 507 throw new IllegalStateException(__IMMUTABLE); | |
| 508 if (putIndex > capacity()) | |
| 509 throw new IllegalArgumentException("putIndex>capacity: " + putIndex + ">" + capacity()); | |
| 510 if (getIndex() > putIndex) | |
| 511 throw new IllegalArgumentException("getIndex>putIndex: " + getIndex() + ">" + putIndex); | |
| 512 */ | |
| 513 _put = putIndex; | |
| 514 _hash=0; | |
| 515 } | |
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516 |
| 1005 | 517 public int skip(int n) |
| 518 { | |
| 519 if (length() < n) n = length(); | |
| 520 setGetIndex(getIndex() + n); | |
| 521 return n; | |
| 522 } | |
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523 |
| 1005 | 524 public Buffer slice() |
| 525 { | |
| 526 return peek(getIndex(), length()); | |
| 527 } | |
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528 |
| 1005 | 529 public Buffer sliceFromMark() |
| 530 { | |
| 531 return sliceFromMark(getIndex() - markIndex() - 1); | |
| 532 } | |
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533 |
| 1005 | 534 public Buffer sliceFromMark(int length) |
| 535 { | |
| 536 if (markIndex() < 0) return null; | |
| 537 Buffer view = peek(markIndex(), length); | |
| 538 setMarkIndex(-1); | |
| 539 return view; | |
| 540 } | |
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541 |
| 1005 | 542 public int space() |
| 543 { | |
| 544 return capacity() - _put; | |
| 545 } | |
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546 |
| 1005 | 547 public String toDetailString() |
| 548 { | |
| 549 StringBuilder buf = new StringBuilder(); | |
| 550 buf.append("["); | |
| 551 buf.append(super.hashCode()); | |
| 552 buf.append(","); | |
| 553 buf.append(this.buffer().hashCode()); | |
| 554 buf.append(",m="); | |
| 555 buf.append(markIndex()); | |
| 556 buf.append(",g="); | |
| 557 buf.append(getIndex()); | |
| 558 buf.append(",p="); | |
| 559 buf.append(putIndex()); | |
| 560 buf.append(",c="); | |
| 561 buf.append(capacity()); | |
| 562 buf.append("]={"); | |
| 563 if (markIndex() >= 0) | |
| 564 { | |
| 565 for (int i = markIndex(); i < getIndex(); i++) | |
| 566 { | |
| 567 byte b = peek(i); | |
| 568 TypeUtil.toHex(b,buf); | |
| 569 } | |
| 570 buf.append("}{"); | |
| 571 } | |
| 572 int count = 0; | |
| 573 for (int i = getIndex(); i < putIndex(); i++) | |
| 574 { | |
| 575 byte b = peek(i); | |
| 576 TypeUtil.toHex(b,buf); | |
| 577 if (count++ == 50) | |
| 578 { | |
| 579 if (putIndex() - i > 20) | |
| 580 { | |
| 581 buf.append(" ... "); | |
| 582 i = putIndex() - 20; | |
| 583 } | |
| 584 } | |
| 585 } | |
| 586 buf.append('}'); | |
| 587 return buf.toString(); | |
| 588 } | |
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589 |
| 1005 | 590 @Override |
| 591 public String toString() | |
| 592 { | |
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593 /* |
| 1005 | 594 if (isImmutable()) |
| 595 { | |
| 596 if (_string == null) | |
| 597 _string = new String(asArray(), 0, length()); | |
| 598 return _string; | |
| 599 } | |
| 600 return new String(asArray(), 0, length()); | |
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601 */ |
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602 return toString("ISO-8859-1"); |
| 1005 | 603 } |
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604 |
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605 @Override |
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606 public final String toString(String charset) |
| 1005 | 607 { |
| 608 try | |
| 609 { | |
| 610 byte[] bytes=array(); | |
| 611 if (bytes!=null) | |
| 612 return new String(bytes,getIndex(),length(),charset); | |
| 613 return new String(asArray(), 0, length(),charset); | |
| 614 | |
| 615 } | |
| 616 catch(Exception e) | |
| 617 { | |
| 618 LOG.warn("",e); | |
| 619 return new String(asArray(), 0, length()); | |
| 620 } | |
| 621 } | |
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622 |
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623 @Override |
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624 public final String toString(Charset charset) |
| 1005 | 625 { |
| 626 try | |
| 627 { | |
| 628 byte[] bytes=array(); | |
| 629 if (bytes!=null) | |
| 630 return new String(bytes,getIndex(),length(),charset); | |
| 631 return new String(asArray(), 0, length(),charset); | |
| 632 } | |
| 633 catch(Exception e) | |
| 634 { | |
| 635 LOG.warn("",e); | |
| 636 return new String(asArray(), 0, length()); | |
| 637 } | |
| 638 } | |
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639 |
| 1005 | 640 /* ------------------------------------------------------------ */ |
| 641 public String toDebugString() | |
| 642 { | |
| 643 return getClass()+"@"+super.hashCode(); | |
| 644 } | |
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645 |
| 1005 | 646 /* ------------------------------------------------------------ */ |
| 647 public int readFrom(InputStream in,int max) throws IOException | |
| 648 { | |
| 649 byte[] array = array(); | |
| 650 int s=space(); | |
| 651 if (s>max) | |
| 652 s=max; | |
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|
653 |
| 1005 | 654 if (array!=null) |
| 655 { | |
| 656 int l=in.read(array,_put,s); | |
| 657 if (l>0) | |
| 658 _put+=l; | |
| 659 return l; | |
| 660 } | |
| 661 else | |
| 662 { | |
| 663 byte[] buf=new byte[s>1024?1024:s]; | |
| 664 int total=0; | |
| 665 while (s>0) | |
| 666 { | |
| 667 int l=in.read(buf,0,buf.length); | |
| 668 if (l<0) | |
| 669 return total>0?total:-1; | |
| 670 int p=put(buf,0,l); | |
| 671 assert l==p; | |
| 672 s-=l; | |
| 673 } | |
| 674 return total; | |
| 675 } | |
| 676 } | |
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677 } |