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package org.apache.commons.ognl; |
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public |
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class JavaCharStream |
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{ |
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|
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public static final boolean staticFlag = false; |
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|
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static final int hexval(char c) throws java.io.IOException { |
17 | 24 | switch(c) |
18 | |
{ |
19 | |
case '0' : |
20 | 12 | return 0; |
21 | |
case '1' : |
22 | 0 | return 1; |
23 | |
case '2' : |
24 | 0 | return 2; |
25 | |
case '3' : |
26 | 0 | return 3; |
27 | |
case '4' : |
28 | 2 | return 4; |
29 | |
case '5' : |
30 | 0 | return 5; |
31 | |
case '6' : |
32 | 2 | return 6; |
33 | |
case '7' : |
34 | 0 | return 7; |
35 | |
case '8' : |
36 | 4 | return 8; |
37 | |
case '9' : |
38 | 0 | return 9; |
39 | |
|
40 | |
case 'a' : |
41 | |
case 'A' : |
42 | 2 | return 10; |
43 | |
case 'b' : |
44 | |
case 'B' : |
45 | 0 | return 11; |
46 | |
case 'c' : |
47 | |
case 'C' : |
48 | 2 | return 12; |
49 | |
case 'd' : |
50 | |
case 'D' : |
51 | 0 | return 13; |
52 | |
case 'e' : |
53 | |
case 'E' : |
54 | 0 | return 14; |
55 | |
case 'f' : |
56 | |
case 'F' : |
57 | 0 | return 15; |
58 | |
} |
59 | |
|
60 | 0 | throw new java.io.IOException(); |
61 | |
} |
62 | |
|
63 | |
|
64 | 1148 | public int bufpos = -1; |
65 | |
int bufsize; |
66 | |
int available; |
67 | |
int tokenBegin; |
68 | |
protected int bufline[]; |
69 | |
protected int bufcolumn[]; |
70 | |
|
71 | 1148 | protected int column = 0; |
72 | 1148 | protected int line = 1; |
73 | |
|
74 | 1148 | protected boolean prevCharIsCR = false; |
75 | 1148 | protected boolean prevCharIsLF = false; |
76 | |
|
77 | |
protected java.io.Reader inputStream; |
78 | |
|
79 | |
protected char[] nextCharBuf; |
80 | |
protected char[] buffer; |
81 | 1148 | protected int maxNextCharInd = 0; |
82 | 1148 | protected int nextCharInd = -1; |
83 | 1148 | protected int inBuf = 0; |
84 | 1148 | protected int tabSize = 8; |
85 | |
|
86 | 0 | protected void setTabSize(int i) { tabSize = i; } |
87 | 0 | protected int getTabSize(int i) { return tabSize; } |
88 | |
|
89 | |
protected void ExpandBuff(boolean wrapAround) |
90 | |
{ |
91 | 0 | char[] newbuffer = new char[bufsize + 2048]; |
92 | 0 | int newbufline[] = new int[bufsize + 2048]; |
93 | 0 | int newbufcolumn[] = new int[bufsize + 2048]; |
94 | |
|
95 | |
try |
96 | |
{ |
97 | 0 | if (wrapAround) |
98 | |
{ |
99 | 0 | System.arraycopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin); |
100 | 0 | System.arraycopy(buffer, 0, newbuffer, bufsize - tokenBegin, bufpos); |
101 | 0 | buffer = newbuffer; |
102 | |
|
103 | 0 | System.arraycopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin); |
104 | 0 | System.arraycopy(bufline, 0, newbufline, bufsize - tokenBegin, bufpos); |
105 | 0 | bufline = newbufline; |
106 | |
|
107 | 0 | System.arraycopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin); |
108 | 0 | System.arraycopy(bufcolumn, 0, newbufcolumn, bufsize - tokenBegin, bufpos); |
109 | 0 | bufcolumn = newbufcolumn; |
110 | |
|
111 | 0 | bufpos += (bufsize - tokenBegin); |
112 | |
} |
113 | |
else |
114 | |
{ |
115 | 0 | System.arraycopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin); |
116 | 0 | buffer = newbuffer; |
117 | |
|
118 | 0 | System.arraycopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin); |
119 | 0 | bufline = newbufline; |
120 | |
|
121 | 0 | System.arraycopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin); |
122 | 0 | bufcolumn = newbufcolumn; |
123 | |
|
124 | 0 | bufpos -= tokenBegin; |
125 | |
} |
126 | |
} |
127 | 0 | catch (Throwable t) |
128 | |
{ |
129 | 0 | throw new Error(t.getMessage()); |
130 | 0 | } |
131 | |
|
132 | 0 | available = (bufsize += 2048); |
133 | 0 | tokenBegin = 0; |
134 | 0 | } |
135 | |
|
136 | |
protected void FillBuff() throws java.io.IOException |
137 | |
{ |
138 | |
int i; |
139 | 2845 | if (maxNextCharInd == 4096) |
140 | 0 | maxNextCharInd = nextCharInd = 0; |
141 | |
|
142 | |
try { |
143 | 2845 | if ((i = inputStream.read(nextCharBuf, maxNextCharInd, |
144 | |
4096 - maxNextCharInd)) == -1) |
145 | |
{ |
146 | 1145 | inputStream.close(); |
147 | 1145 | throw new java.io.IOException(); |
148 | |
} |
149 | |
else |
150 | 1148 | maxNextCharInd += i; |
151 | 1148 | return; |
152 | |
} |
153 | 1697 | catch(java.io.IOException e) { |
154 | 1697 | if (bufpos != 0) |
155 | |
{ |
156 | 550 | --bufpos; |
157 | 550 | backup(0); |
158 | |
} |
159 | |
else |
160 | |
{ |
161 | 1147 | bufline[bufpos] = line; |
162 | 1147 | bufcolumn[bufpos] = column; |
163 | |
} |
164 | 1697 | throw e; |
165 | |
} |
166 | |
} |
167 | |
|
168 | |
protected char ReadByte() throws java.io.IOException |
169 | |
{ |
170 | 26171 | if (++nextCharInd >= maxNextCharInd) |
171 | 2845 | FillBuff(); |
172 | |
|
173 | 24474 | return nextCharBuf[nextCharInd]; |
174 | |
} |
175 | |
|
176 | |
|
177 | |
public char BeginToken() throws java.io.IOException |
178 | |
{ |
179 | 9805 | if (inBuf > 0) |
180 | |
{ |
181 | 3841 | --inBuf; |
182 | |
|
183 | 3841 | if (++bufpos == bufsize) |
184 | 0 | bufpos = 0; |
185 | |
|
186 | 3841 | tokenBegin = bufpos; |
187 | 3841 | return buffer[bufpos]; |
188 | |
} |
189 | |
|
190 | 5964 | tokenBegin = 0; |
191 | 5964 | bufpos = -1; |
192 | |
|
193 | 5964 | return readChar(); |
194 | |
} |
195 | |
|
196 | |
protected void AdjustBuffSize() |
197 | |
{ |
198 | 0 | if (available == bufsize) |
199 | |
{ |
200 | 0 | if (tokenBegin > 2048) |
201 | |
{ |
202 | 0 | bufpos = 0; |
203 | 0 | available = tokenBegin; |
204 | |
} |
205 | |
else |
206 | 0 | ExpandBuff(false); |
207 | |
} |
208 | 0 | else if (available > tokenBegin) |
209 | 0 | available = bufsize; |
210 | 0 | else if ((tokenBegin - available) < 2048) |
211 | 0 | ExpandBuff(true); |
212 | |
else |
213 | 0 | available = tokenBegin; |
214 | 0 | } |
215 | |
|
216 | |
protected void UpdateLineColumn(char c) |
217 | |
{ |
218 | 24450 | column++; |
219 | |
|
220 | 24450 | if (prevCharIsLF) |
221 | |
{ |
222 | 0 | prevCharIsLF = false; |
223 | 0 | line += (column = 1); |
224 | |
} |
225 | 24450 | else if (prevCharIsCR) |
226 | |
{ |
227 | 0 | prevCharIsCR = false; |
228 | 0 | if (c == '\n') |
229 | |
{ |
230 | 0 | prevCharIsLF = true; |
231 | |
} |
232 | |
else |
233 | 0 | line += (column = 1); |
234 | |
} |
235 | |
|
236 | 24450 | switch (c) |
237 | |
{ |
238 | |
case '\r' : |
239 | 0 | prevCharIsCR = true; |
240 | 0 | break; |
241 | |
case '\n' : |
242 | 0 | prevCharIsLF = true; |
243 | 0 | break; |
244 | |
case '\t' : |
245 | 0 | column--; |
246 | 0 | column += (tabSize - (column % tabSize)); |
247 | 0 | break; |
248 | |
default : |
249 | |
break; |
250 | |
} |
251 | |
|
252 | 24450 | bufline[bufpos] = line; |
253 | 24450 | bufcolumn[bufpos] = column; |
254 | 24450 | } |
255 | |
|
256 | |
|
257 | |
public char readChar() throws java.io.IOException |
258 | |
{ |
259 | 26141 | if (inBuf > 0) |
260 | |
{ |
261 | 31 | --inBuf; |
262 | |
|
263 | 31 | if (++bufpos == bufsize) |
264 | 0 | bufpos = 0; |
265 | |
|
266 | 31 | return buffer[bufpos]; |
267 | |
} |
268 | |
|
269 | |
char c; |
270 | |
|
271 | 26110 | if (++bufpos == available) |
272 | 0 | AdjustBuffSize(); |
273 | |
|
274 | 26110 | if ((buffer[bufpos] = c = ReadByte()) == '\\') |
275 | |
{ |
276 | 33 | UpdateLineColumn(c); |
277 | |
|
278 | 33 | int backSlashCnt = 1; |
279 | |
|
280 | |
for (;;) |
281 | |
{ |
282 | 37 | if (++bufpos == available) |
283 | 0 | AdjustBuffSize(); |
284 | |
|
285 | |
try |
286 | |
{ |
287 | 37 | if ((buffer[bufpos] = c = ReadByte()) != '\\') |
288 | |
{ |
289 | 33 | UpdateLineColumn(c); |
290 | |
|
291 | 33 | if ((c == 'u') && ((backSlashCnt & 1) == 1)) |
292 | |
{ |
293 | 6 | if (--bufpos < 0) |
294 | 0 | bufpos = bufsize - 1; |
295 | |
|
296 | 6 | break; |
297 | |
} |
298 | |
|
299 | 27 | backup(backSlashCnt); |
300 | 27 | return '\\'; |
301 | |
} |
302 | |
} |
303 | 0 | catch(java.io.IOException e) |
304 | |
{ |
305 | |
|
306 | 0 | if (backSlashCnt > 1) |
307 | 0 | backup(backSlashCnt-1); |
308 | |
|
309 | 0 | return '\\'; |
310 | 4 | } |
311 | |
|
312 | 4 | UpdateLineColumn(c); |
313 | 4 | backSlashCnt++; |
314 | |
} |
315 | |
|
316 | |
|
317 | |
try |
318 | |
{ |
319 | 6 | while ((c = ReadByte()) == 'u') |
320 | 0 | ++column; |
321 | |
|
322 | 6 | buffer[bufpos] = c = (char)(hexval(c) << 12 | |
323 | |
hexval(ReadByte()) << 8 | |
324 | |
hexval(ReadByte()) << 4 | |
325 | |
hexval(ReadByte())); |
326 | |
|
327 | 6 | column += 4; |
328 | |
} |
329 | 0 | catch(java.io.IOException e) |
330 | |
{ |
331 | 0 | throw new Error("Invalid escape character at line " + line + |
332 | |
" column " + column + "."); |
333 | 6 | } |
334 | |
|
335 | 6 | if (backSlashCnt == 1) |
336 | 6 | return c; |
337 | |
else |
338 | |
{ |
339 | 0 | backup(backSlashCnt - 1); |
340 | 0 | return '\\'; |
341 | |
} |
342 | |
} |
343 | |
else |
344 | |
{ |
345 | 24380 | UpdateLineColumn(c); |
346 | 24380 | return c; |
347 | |
} |
348 | |
} |
349 | |
|
350 | |
@Deprecated |
351 | |
|
352 | |
|
353 | |
|
354 | |
|
355 | |
public int getColumn() { |
356 | 0 | return bufcolumn[bufpos]; |
357 | |
} |
358 | |
|
359 | |
@Deprecated |
360 | |
|
361 | |
|
362 | |
|
363 | |
|
364 | |
public int getLine() { |
365 | 0 | return bufline[bufpos]; |
366 | |
} |
367 | |
|
368 | |
|
369 | |
public int getEndColumn() { |
370 | 8279 | return bufcolumn[bufpos]; |
371 | |
} |
372 | |
|
373 | |
|
374 | |
public int getEndLine() { |
375 | 8279 | return bufline[bufpos]; |
376 | |
} |
377 | |
|
378 | |
|
379 | |
public int getBeginColumn() { |
380 | 8275 | return bufcolumn[tokenBegin]; |
381 | |
} |
382 | |
|
383 | |
|
384 | |
public int getBeginLine() { |
385 | 8275 | return bufline[tokenBegin]; |
386 | |
} |
387 | |
|
388 | |
|
389 | |
public void backup(int amount) { |
390 | |
|
391 | 11562 | inBuf += amount; |
392 | 11562 | if ((bufpos -= amount) < 0) |
393 | 0 | bufpos += bufsize; |
394 | 11562 | } |
395 | |
|
396 | |
|
397 | |
public JavaCharStream(java.io.Reader dstream, |
398 | |
int startline, int startcolumn, int buffersize) |
399 | 1148 | { |
400 | 1148 | inputStream = dstream; |
401 | 1148 | line = startline; |
402 | 1148 | column = startcolumn - 1; |
403 | |
|
404 | 1148 | available = bufsize = buffersize; |
405 | 1148 | buffer = new char[buffersize]; |
406 | 1148 | bufline = new int[buffersize]; |
407 | 1148 | bufcolumn = new int[buffersize]; |
408 | 1148 | nextCharBuf = new char[4096]; |
409 | 1148 | } |
410 | |
|
411 | |
|
412 | |
public JavaCharStream(java.io.Reader dstream, |
413 | |
int startline, int startcolumn) |
414 | |
{ |
415 | 1148 | this(dstream, startline, startcolumn, 4096); |
416 | 1148 | } |
417 | |
|
418 | |
|
419 | |
public JavaCharStream(java.io.Reader dstream) |
420 | |
{ |
421 | 0 | this(dstream, 1, 1, 4096); |
422 | 0 | } |
423 | |
|
424 | |
public void ReInit(java.io.Reader dstream, |
425 | |
int startline, int startcolumn, int buffersize) |
426 | |
{ |
427 | 0 | inputStream = dstream; |
428 | 0 | line = startline; |
429 | 0 | column = startcolumn - 1; |
430 | |
|
431 | 0 | if (buffer == null || buffersize != buffer.length) |
432 | |
{ |
433 | 0 | available = bufsize = buffersize; |
434 | 0 | buffer = new char[buffersize]; |
435 | 0 | bufline = new int[buffersize]; |
436 | 0 | bufcolumn = new int[buffersize]; |
437 | 0 | nextCharBuf = new char[4096]; |
438 | |
} |
439 | 0 | prevCharIsLF = prevCharIsCR = false; |
440 | 0 | tokenBegin = inBuf = maxNextCharInd = 0; |
441 | 0 | nextCharInd = bufpos = -1; |
442 | 0 | } |
443 | |
|
444 | |
|
445 | |
public void ReInit(java.io.Reader dstream, |
446 | |
int startline, int startcolumn) |
447 | |
{ |
448 | 0 | ReInit(dstream, startline, startcolumn, 4096); |
449 | 0 | } |
450 | |
|
451 | |
|
452 | |
public void ReInit(java.io.Reader dstream) |
453 | |
{ |
454 | 0 | ReInit(dstream, 1, 1, 4096); |
455 | 0 | } |
456 | |
|
457 | |
public JavaCharStream(java.io.InputStream dstream, String encoding, int startline, |
458 | |
int startcolumn, int buffersize) throws java.io.UnsupportedEncodingException |
459 | |
{ |
460 | 0 | this(encoding == null ? new java.io.InputStreamReader(dstream) : new java.io.InputStreamReader(dstream, encoding), startline, startcolumn, buffersize); |
461 | 0 | } |
462 | |
|
463 | |
|
464 | |
public JavaCharStream(java.io.InputStream dstream, int startline, |
465 | |
int startcolumn, int buffersize) |
466 | |
{ |
467 | 0 | this(new java.io.InputStreamReader(dstream), startline, startcolumn, 4096); |
468 | 0 | } |
469 | |
|
470 | |
|
471 | |
public JavaCharStream(java.io.InputStream dstream, String encoding, int startline, |
472 | |
int startcolumn) throws java.io.UnsupportedEncodingException |
473 | |
{ |
474 | 0 | this(dstream, encoding, startline, startcolumn, 4096); |
475 | 0 | } |
476 | |
|
477 | |
|
478 | |
public JavaCharStream(java.io.InputStream dstream, int startline, |
479 | |
int startcolumn) |
480 | |
{ |
481 | 0 | this(dstream, startline, startcolumn, 4096); |
482 | 0 | } |
483 | |
|
484 | |
|
485 | |
public JavaCharStream(java.io.InputStream dstream, String encoding) throws java.io.UnsupportedEncodingException |
486 | |
{ |
487 | 0 | this(dstream, encoding, 1, 1, 4096); |
488 | 0 | } |
489 | |
|
490 | |
|
491 | |
public JavaCharStream(java.io.InputStream dstream) |
492 | |
{ |
493 | 0 | this(dstream, 1, 1, 4096); |
494 | 0 | } |
495 | |
|
496 | |
|
497 | |
public void ReInit(java.io.InputStream dstream, String encoding, int startline, |
498 | |
int startcolumn, int buffersize) throws java.io.UnsupportedEncodingException |
499 | |
{ |
500 | 0 | ReInit(encoding == null ? new java.io.InputStreamReader(dstream) : new java.io.InputStreamReader(dstream, encoding), startline, startcolumn, buffersize); |
501 | 0 | } |
502 | |
|
503 | |
|
504 | |
public void ReInit(java.io.InputStream dstream, int startline, |
505 | |
int startcolumn, int buffersize) |
506 | |
{ |
507 | 0 | ReInit(new java.io.InputStreamReader(dstream), startline, startcolumn, buffersize); |
508 | 0 | } |
509 | |
|
510 | |
public void ReInit(java.io.InputStream dstream, String encoding, int startline, |
511 | |
int startcolumn) throws java.io.UnsupportedEncodingException |
512 | |
{ |
513 | 0 | ReInit(dstream, encoding, startline, startcolumn, 4096); |
514 | 0 | } |
515 | |
|
516 | |
public void ReInit(java.io.InputStream dstream, int startline, |
517 | |
int startcolumn) |
518 | |
{ |
519 | 0 | ReInit(dstream, startline, startcolumn, 4096); |
520 | 0 | } |
521 | |
|
522 | |
public void ReInit(java.io.InputStream dstream, String encoding) throws java.io.UnsupportedEncodingException |
523 | |
{ |
524 | 0 | ReInit(dstream, encoding, 1, 1, 4096); |
525 | 0 | } |
526 | |
|
527 | |
|
528 | |
public void ReInit(java.io.InputStream dstream) |
529 | |
{ |
530 | 0 | ReInit(dstream, 1, 1, 4096); |
531 | 0 | } |
532 | |
|
533 | |
|
534 | |
public String GetImage() |
535 | |
{ |
536 | 3205 | if (bufpos >= tokenBegin) |
537 | 3205 | return new String(buffer, tokenBegin, bufpos - tokenBegin + 1); |
538 | |
else |
539 | 0 | return new String(buffer, tokenBegin, bufsize - tokenBegin) + |
540 | |
new String(buffer, 0, bufpos + 1); |
541 | |
} |
542 | |
|
543 | |
|
544 | |
public char[] GetSuffix(int len) |
545 | |
{ |
546 | 3758 | char[] ret = new char[len]; |
547 | |
|
548 | 3758 | if ((bufpos + 1) >= len) |
549 | 3758 | System.arraycopy(buffer, bufpos - len + 1, ret, 0, len); |
550 | |
else |
551 | |
{ |
552 | 0 | System.arraycopy(buffer, bufsize - (len - bufpos - 1), ret, 0, |
553 | |
len - bufpos - 1); |
554 | 0 | System.arraycopy(buffer, 0, ret, len - bufpos - 1, bufpos + 1); |
555 | |
} |
556 | |
|
557 | 3758 | return ret; |
558 | |
} |
559 | |
|
560 | |
|
561 | |
public void Done() |
562 | |
{ |
563 | 0 | nextCharBuf = null; |
564 | 0 | buffer = null; |
565 | 0 | bufline = null; |
566 | 0 | bufcolumn = null; |
567 | 0 | } |
568 | |
|
569 | |
|
570 | |
|
571 | |
|
572 | |
public void adjustBeginLineColumn(int newLine, int newCol) |
573 | |
{ |
574 | 0 | int start = tokenBegin; |
575 | |
int len; |
576 | |
|
577 | 0 | if (bufpos >= tokenBegin) |
578 | |
{ |
579 | 0 | len = bufpos - tokenBegin + inBuf + 1; |
580 | |
} |
581 | |
else |
582 | |
{ |
583 | 0 | len = bufsize - tokenBegin + bufpos + 1 + inBuf; |
584 | |
} |
585 | |
|
586 | 0 | int i = 0, j = 0, k = 0; |
587 | 0 | int nextColDiff = 0, columnDiff = 0; |
588 | |
|
589 | 0 | while (i < len && bufline[j = start % bufsize] == bufline[k = ++start % bufsize]) |
590 | |
{ |
591 | 0 | bufline[j] = newLine; |
592 | 0 | nextColDiff = columnDiff + bufcolumn[k] - bufcolumn[j]; |
593 | 0 | bufcolumn[j] = newCol + columnDiff; |
594 | 0 | columnDiff = nextColDiff; |
595 | 0 | i++; |
596 | |
} |
597 | |
|
598 | 0 | if (i < len) |
599 | |
{ |
600 | 0 | bufline[j] = newLine++; |
601 | 0 | bufcolumn[j] = newCol + columnDiff; |
602 | |
|
603 | 0 | while (i++ < len) |
604 | |
{ |
605 | 0 | if (bufline[j = start % bufsize] != bufline[++start % bufsize]) |
606 | 0 | bufline[j] = newLine++; |
607 | |
else |
608 | 0 | bufline[j] = newLine; |
609 | |
} |
610 | |
} |
611 | |
|
612 | 0 | line = bufline[j]; |
613 | 0 | column = bufcolumn[j]; |
614 | 0 | } |
615 | |
|
616 | |
} |
617 | |
|