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1 package com.etymon.pj;
2
3 import java.io.*;
4 import java.util.*;
5 import com.etymon.pj.exception.*;
6 import com.etymon.pj.object.*;
7 import com.etymon.pj.object.pagemark.*;
8
9 public class StreamParser {
10
11 public StreamParser() {
12 }
13
14 public Vector parse(PjStream stream) throws PdfFormatException {
15 _buffer = stream.getBuffer();
16 _stack = new Stack();
17 int b;
18 _counter = 0;
19 _image = false;
20 while (_counter < _buffer.length) {
21 getToken();
22 processToken();
23 }
24 Vector v = new Vector();
25 while ( ! _stack.empty() ) {
26 v.insertElementAt(_stack.pop(), 0);
27 }
28 return v;
29 }
30
31 private void getImageData() {
33 boolean done = false;
34 int start = _counter;
35 do {
36 if ( ( (_buffer[_counter] == '\n') ||
37 (_buffer[_counter] == '\r') ) &&
38 ((_counter - start) >= 3) ) {
39 if ( (_buffer[_counter - 1] == 'I') &&
40 (_buffer[_counter - 2] == 'E') &&
41 ( (_buffer[_counter - 3] == '\n') ||
42 (_buffer[_counter - 3] == '\r') ) ) {
43 _imageData = new byte[_counter - start - 2];
44 System.arraycopy(_buffer, start, _imageData, 0, _imageData.length);
45 done = true;
46 }
47 }
48 _counter++;
49 } while (done == false);
50 _token = "";
51 }
52
53 private void getToken() {
54 if (_image == true) {
56 getImageData();
57 return;
58 }
59 skipWhitespace();
61 StringBuffer  token = new StringBuffer ();
62 int stringMode = 0;
63 char ch = '\0';
64 char lastch = '\0';
65 boolean done = false;
66 int c;
67 while ( (!done) && ((c = _counter) < _buffer.length) ) {
68 int b = _buffer[c];
69 char oldlastch = lastch;
70 lastch = ch;
71 ch = (char)b;
72 if (stringMode == 0) {
73 switch (ch) {
74 case '(':
75 if (token.length() == 0) {
76 stringMode = 1;
77 token.append('(');
78 } else {
79 _counter--;
80 done = true;
81 }
82 break;
83 case '[':
84 case ']':
85 if (token.length() == 0) {
86 token.append(ch);
87 } else {
88 _counter--;
89 }
90 done = true;
91 break;
92 case '/':
93 if (token.length() == 0) {
94 token.append(ch);
95 } else {
96 _counter--;
97 done = true;
98 }
99 break;
100 case '<':
101 case '>':
102 int x = token.length();
103 if (x == 0) {
104 token.append(ch);
105 } else {
106 if ( (x == 1) && (token.charAt(0) == ch) ) {
107 token.append(ch);
108 done = true;
109 } else {
110 _counter--;
111 done = true;
112 }
113 }
114 break;
115 default:
116 if (isWhitespace(ch)) {
117 done = true;
118 } else {
119 token.append(ch);
120 }
121 }
122 } else {
123 switch (ch) {
125 case '(':
126 token.append('(');
127 if ( (lastch != '\\') || (oldlastch == '\\') ) {
128 stringMode++;
129 }
130 break;
131 case ')':
132 token.append(')');
133 if ( (lastch != '\\') || (oldlastch == '\\') ) {
134 stringMode--;
135 if (stringMode == 0) {
136 done = true;
137 }
138 }
139 break;
140 default:
141 token.append(ch);
142 }
143 }
144 _counter++;
145 }
146 _token = token.toString();
147 }
148
149 private void skipWhitespace() {
150 int c;
151 while ( ((c = _counter) < _buffer.length) && (isWhitespace((char)_buffer[c])) ) {
152 _counter++;
153 }
154 }
155
156 private static boolean isWhitespace(char c) {
157 return ( (c == ' ') ||
158 (c == '\t') ||
159 (c == '\r') ||
160 (c == '\n') );
161 }
162
163 private void processToken() throws PdfFormatException {
164 if ( (_token.length() == 0) && (_image == false) ) {
165 return;
166 }
167 if (_image == true) {
168 _image = false;
169 _o1 = _stack.pop();
171 if ( ! (_o1 instanceof PjDictionary) ) {
172 throw new PdfFormatException("Dictionary expected before ID.");
173 }
174 _stack.push(new XEI((PjDictionary)_o1, _imageData));
175 }
176 else if (_token.equals("BI")) {
177 _stack.push("<<");
178 }
179 else if ( (_token.equals(">>")) || (_token.equals("ID")) ) {
180 _b1 = false;
181 _h1 = new Hashtable();
182 while ( ! _b1 ) {
183 _o2 = _stack.pop();
184 if ( (_o2 instanceof String ) &&
185 (((String )_o2).equals("<<")) ) {
186 _b1 = true;
187 } else {
188 if ( ! (_o2 instanceof PjObject) ) {
189 throw new PdfFormatException("PDF object expected within dictionary.");
190 }
191 _o1 = _stack.pop();
192 if ( ! (_o1 instanceof PjName) ) {
193 throw new PdfFormatException("Name (key) expected within dictionary.");
194 }
195 _h1.put(_o1, _o2);
196 }
197 }
198 _stack.push(new PjDictionary(_h1));
199 if (_token.equals("ID")) {
200 _image = true;
201 }
202 }
203 else if (_token.equals("BT")) {
204 _stack.push(new XBT());
205 }
206 else if (_token.equals("ET")) {
207 _stack.push(new XET());
208 }
209 else if (_token.equals("Td")) {
210 _o1 = _stack.pop();
211 if (_o1 instanceof PjNumber) {
212 _n2 = (PjNumber)(_o1);
213 } else {
214 throw new PdfFormatException("Number (y offset) expected before Td.");
215 }
216 _o1 = _stack.pop();
217 if (_o1 instanceof PjNumber) {
218 _n1 = (PjNumber)(_o1);
219 } else {
220 throw new PdfFormatException("Number (x offset) expected before Td.");
221 }
222 _stack.push(new XTd(_n1, _n2));
223 }
224 else if (_token.equals("TD")) {
225 _o1 = _stack.pop();
226 if (_o1 instanceof PjNumber) {
227 _n2 = (PjNumber)(_o1);
228 } else {
229 throw new PdfFormatException("Number (y offset) expected before TD.");
230 }
231 _o1 = _stack.pop();
232 if (_o1 instanceof PjNumber) {
233 _n1 = (PjNumber)(_o1);
234 } else {
235 throw new PdfFormatException("Number (x offset) expected before TD.");
236 }
237 _stack.push(new XXTD(_n1, _n2));
238 }
239 else if (_token.equals("m")) {
240 _o1 = _stack.pop();
241 if (_o1 instanceof PjNumber) {
242 _n2 = (PjNumber)(_o1);
243 } else {
244 throw new PdfFormatException("Number (y) expected before m.");
245 }
246 _o1 = _stack.pop();
247 if (_o1 instanceof PjNumber) {
248 _n1 = (PjNumber)(_o1);
249 } else {
250 throw new PdfFormatException("Number (x) expected before m.");
251 }
252 _stack.push(new Xm(_n1, _n2));
253 }
254 else if (_token.equals("l")) {
255 _o1 = _stack.pop();
256 if (_o1 instanceof PjNumber) {
257 _n2 = (PjNumber)(_o1);
258 } else {
259 throw new PdfFormatException("Number (y) expected before l.");
260 }
261 _o1 = _stack.pop();
262 if (_o1 instanceof PjNumber) {
263 _n1 = (PjNumber)(_o1);
264 } else {
265 throw new PdfFormatException("Number (x) expected before l.");
266 }
267 _stack.push(new Xl(_n1, _n2));
268 }
269 else if (_token.equals("d0")) {
270 _o1 = _stack.pop();
271 if (_o1 instanceof PjNumber) {
272 _n2 = (PjNumber)(_o1);
273 } else {
274 throw new PdfFormatException("Number (w[y]) expected before d0.");
275 }
276 _o1 = _stack.pop();
277 if (_o1 instanceof PjNumber) {
278 _n1 = (PjNumber)(_o1);
279 } else {
280 throw new PdfFormatException("Number (w[x]) expected before d0.");
281 }
282 _stack.push(new Xd0(_n1, _n2));
283 }
284 else if (_token.equals("i")) {
285 _o1 = _stack.pop();
286 if (_o1 instanceof PjNumber) {
287 _n1 = (PjNumber)(_o1);
288 } else {
289 throw new PdfFormatException("Number (flatness) expected before i.");
290 }
291 _stack.push(new Xi(_n1));
292 }
293 else if (_token.equals("g")) {
294 _o1 = _stack.pop();
295 if (_o1 instanceof PjNumber) {
296 _n1 = (PjNumber)(_o1);
297 } else {
298 throw new PdfFormatException("Number (gray) expected before g.");
299 }
300 _stack.push(new Xg(_n1));
301 }
302 else if (_token.equals("G")) {
303 _o1 = _stack.pop();
304 if (_o1 instanceof PjNumber) {
305 _n1 = (PjNumber)(_o1);
306 } else {
307 throw new PdfFormatException("Number (gray) expected before G.");
308 }
309 _stack.push(new XXG(_n1));
310 }
311 else if (_token.equals("w")) {
312 _o1 = _stack.pop();
313 if (_o1 instanceof PjNumber) {
314 _n1 = (PjNumber)(_o1);
315 } else {
316 throw new PdfFormatException("Number (line width) expected before w.");
317 }
318 _stack.push(new Xw(_n1));
319 }
320 else if (_token.equals("Ts")) {
321 _o1 = _stack.pop();
322 if (_o1 instanceof PjNumber) {
323 _n1 = (PjNumber)(_o1);
324 } else {
325 throw new PdfFormatException("Number (rise) expected before Ts.");
326 }
327 _stack.push(new XTs(_n1));
328 }
329 else if (_token.equals("TL")) {
330 _o1 = _stack.pop();
331 if (_o1 instanceof PjNumber) {
332 _n1 = (PjNumber)(_o1);
333 } else {
334 throw new PdfFormatException("Number (leading) expected before TL.");
335 }
336 _stack.push(new XTL(_n1));
337 }
338 else if (_token.equals("Tz")) {
339 _o1 = _stack.pop();
340 if (_o1 instanceof PjNumber) {
341 _n1 = (PjNumber)(_o1);
342 } else {
343 throw new PdfFormatException("Number (scale) expected before Tz.");
344 }
345 _stack.push(new XTz(_n1));
346 }
347 else if (_token.equals("Tw")) {
348 _o1 = _stack.pop();
349 if (_o1 instanceof PjNumber) {
350 _n1 = (PjNumber)(_o1);
351 } else {
352 throw new PdfFormatException("Number (word space) expected before Tw.");
353 }
354 _stack.push(new XTw(_n1));
355 }
356 else if (_token.equals("Tc")) {
357 _o1 = _stack.pop();
358 if (_o1 instanceof PjNumber) {
359 _n1 = (PjNumber)(_o1);
360 } else {
361 throw new PdfFormatException("Number (char space) expected before Tc.");
362 }
363 _stack.push(new XTc(_n1));
364 }
365 else if (_token.equals("Tr")) {
366 _o1 = _stack.pop();
367 if (_o1 instanceof PjNumber) {
368 _n1 = (PjNumber)(_o1);
369 } else {
370 throw new PdfFormatException("Number (render) expected before Tr.");
371 }
372 _stack.push(new XTr(_n1));
373 }
374 else if (_token.equals("j")) {
375 _o1 = _stack.pop();
376 if (_o1 instanceof PjNumber) {
377 _n1 = (PjNumber)(_o1);
378 } else {
379 throw new PdfFormatException("Number (line join) expected before j.");
380 }
381 _stack.push(new Xj(_n1));
382 }
383 else if (_token.equals("J")) {
384 _o1 = _stack.pop();
385 if (_o1 instanceof PjNumber) {
386 _n1 = (PjNumber)(_o1);
387 } else {
388 throw new PdfFormatException("Number (line cap) expected before J.");
389 }
390 _stack.push(new XXJ(_n1));
391 }
392 else if (_token.equals("M")) {
393 _o1 = _stack.pop();
394 if (_o1 instanceof PjNumber) {
395 _n1 = (PjNumber)(_o1);
396 } else {
397 throw new PdfFormatException("Number (miter limit) expected before M.");
398 }
399 _stack.push(new XXM(_n1));
400 }
401 else if (_token.equals("cm")) {
402 _o6 = _stack.pop();
403 _o5 = _stack.pop();
404 _o4 = _stack.pop();
405 _o3 = _stack.pop();
406 _o2 = _stack.pop();
407 _o1 = _stack.pop();
408 if ( (_o1 instanceof PjNumber) &&
409 (_o2 instanceof PjNumber) &&
410 (_o3 instanceof PjNumber) &&
411 (_o4 instanceof PjNumber) &&
412 (_o5 instanceof PjNumber) &&
413 (_o6 instanceof PjNumber) ) {
414 _n1 = (PjNumber)_o1;
415 _n2 = (PjNumber)_o2;
416 _n3 = (PjNumber)_o3;
417 _n4 = (PjNumber)_o4;
418 _n5 = (PjNumber)_o5;
419 _n6 = (PjNumber)_o6;
420 } else {
421 throw new PdfFormatException("Number expected before cm.");
422 }
423 _stack.push(new Xcm(_n1, _n2, _n3, _n4, _n5, _n6));
424 }
425 else if (_token.equals("d1")) {
426 _o6 = _stack.pop();
427 _o5 = _stack.pop();
428 _o4 = _stack.pop();
429 _o3 = _stack.pop();
430 _o2 = _stack.pop();
431 _o1 = _stack.pop();
432 if ( (_o1 instanceof PjNumber) &&
433 (_o2 instanceof PjNumber) &&
434 (_o3 instanceof PjNumber) &&
435 (_o4 instanceof PjNumber) &&
436 (_o5 instanceof PjNumber) &&
437 (_o6 instanceof PjNumber) ) {
438 _n1 = (PjNumber)_o1;
439 _n2 = (PjNumber)_o2;
440 _n3 = (PjNumber)_o3;
441 _n4 = (PjNumber)_o4;
442 _n5 = (PjNumber)_o5;
443 _n6 = (PjNumber)_o6;
444 } else {
445 throw new PdfFormatException("Number expected before d1.");
446 }
447 _stack.push(new Xd1(_n1, _n2, _n3, _n4, _n5, _n6));
448 }
449 else if (_token.equals("c")) {
450 _o6 = _stack.pop();
451 _o5 = _stack.pop();
452 _o4 = _stack.pop();
453 _o3 = _stack.pop();
454 _o2 = _stack.pop();
455 _o1 = _stack.pop();
456 if ( (_o1 instanceof PjNumber) &&
457 (_o2 instanceof PjNumber) &&
458 (_o3 instanceof PjNumber) &&
459 (_o4 instanceof PjNumber) &&
460 (_o5 instanceof PjNumber) &&
461 (_o6 instanceof PjNumber) ) {
462 _n1 = (PjNumber)_o1;
463 _n2 = (PjNumber)_o2;
464 _n3 = (PjNumber)_o3;
465 _n4 = (PjNumber)_o4;
466 _n5 = (PjNumber)_o5;
467 _n6 = (PjNumber)_o6;
468 } else {
469 throw new PdfFormatException("Number expected before c.");
470 }
471 _stack.push(new Xc(_n1, _n2, _n3, _n4, _n5, _n6));
472 }
473 else if (_token.equals("v")) {
474 _o4 = _stack.pop();
475 _o3 = _stack.pop();
476 _o2 = _stack.pop();
477 _o1 = _stack.pop();
478 if ( (_o1 instanceof PjNumber) &&
479 (_o2 instanceof PjNumber) &&
480 (_o3 instanceof PjNumber) &&
481 (_o4 instanceof PjNumber) ) {
482 _n1 = (PjNumber)_o1;
483 _n2 = (PjNumber)_o2;
484 _n3 = (PjNumber)_o3;
485 _n4 = (PjNumber)_o4;
486 } else {
487 throw new PdfFormatException("Number expected before v.");
488 }
489 _stack.push(new Xv(_n1, _n2, _n3, _n4));
490 }
491 else if (_token.equals("y")) {
492 _o4 = _stack.pop();
493 _o3 = _stack.pop();
494 _o2 = _stack.pop();
495 _o1 = _stack.pop();
496 if ( (_o1 instanceof PjNumber) &&
497 (_o2 instanceof PjNumber) &&
498 (_o3 instanceof PjNumber) &&
499 (_o4 instanceof PjNumber) ) {
500 _n1 = (PjNumber)_o1;
501 _n2 = (PjNumber)_o2;
502 _n3 = (PjNumber)_o3;
503 _n4 = (PjNumber)_o4;
504 } else {
505 throw new PdfFormatException("Number expected before y.");
506 }
507 _stack.push(new Xy(_n1, _n2, _n3, _n4));
508 }
509 else if (_token.equals("Tm")) {
510 _o6 = _stack.pop();
511 _o5 = _stack.pop();
512 _o4 = _stack.pop();
513 _o3 = _stack.pop();
514 _o2 = _stack.pop();
515 _o1 = _stack.pop();
516 if ( (_o1 instanceof PjNumber) &&
517 (_o2 instanceof PjNumber) &&
518 (_o3 instanceof PjNumber) &&
519 (_o4 instanceof PjNumber) &&
520 (_o5 instanceof PjNumber) &&
521 (_o6 instanceof PjNumber) ) {
522 _n1 = (PjNumber)_o1;
523 _n2 = (PjNumber)_o2;
524 _n3 = (PjNumber)_o3;
525 _n4 = (PjNumber)_o4;
526 _n5 = (PjNumber)_o5;
527 _n6 = (PjNumber)_o6;
528 } else {
529 throw new PdfFormatException("Number expected before Tm.");
530 }
531 _stack.push(new XTm(_n1, _n2, _n3, _n4, _n5, _n6));
532 }
533 else if (_token.equals("k")) {
534 _o4 = _stack.pop();
535 _o3 = _stack.pop();
536 _o2 = _stack.pop();
537 _o1 = _stack.pop();
538 if ( (_o1 instanceof PjNumber) &&
539 (_o2 instanceof PjNumber) &&
540 (_o3 instanceof PjNumber) &&
541 (_o4 instanceof PjNumber) ) {
542 _n1 = (PjNumber)_o1;
543 _n2 = (PjNumber)_o2;
544 _n3 = (PjNumber)_o3;
545 _n4 = (PjNumber)_o4;
546 } else {
547 throw new PdfFormatException("Number expected before k.");
548 }
549 _stack.push(new Xk(_n1, _n2, _n3, _n4));
550 }
551 else if (_token.equals("K")) {
552 _o4 = _stack.pop();
553 _o3 = _stack.pop();
554 _o2 = _stack.pop();
555 _o1 = _stack.pop();
556 if ( (_o1 instanceof PjNumber) &&
557 (_o2 instanceof PjNumber) &&
558 (_o3 instanceof PjNumber) &&
559 (_o4 instanceof PjNumber) ) {
560 _n1 = (PjNumber)_o1;
561 _n2 = (PjNumber)_o2;
562 _n3 = (PjNumber)_o3;
563 _n4 = (PjNumber)_o4;
564 } else {
565 throw new PdfFormatException("Number expected before K.");
566 }
567 _stack.push(new XXK(_n1, _n2, _n3, _n4));
568 }
569 else if (_token.equals("sc")) {
570 _o4 = _stack.pop();
571 _o3 = _stack.pop();
572 _o2 = _stack.pop();
573 if (_stack.peek() instanceof PjNumber) {
574 _o1 = _stack.pop();
575 } else {
576 _o1 = null;
577 }
578 if ( ( (_o1 == null) || (_o1 instanceof PjNumber) ) &&
579 (_o2 instanceof PjNumber) &&
580 (_o3 instanceof PjNumber) &&
581 (_o4 instanceof PjNumber) ) {
582 if (_o1 == null) {
583 _n1 = (PjNumber)_o2;
584 _n2 = (PjNumber)_o3;
585 _n3 = (PjNumber)_o4;
586 _stack.push(new Xsc(_n1, _n2, _n3));
587 } else {
588 _n1 = (PjNumber)_o1;
589 _n2 = (PjNumber)_o2;
590 _n3 = (PjNumber)_o3;
591 _n4 = (PjNumber)_o4;
592 _stack.push(new Xsc(_n1, _n2, _n3, _n4));
593 }
594 } else {
595 throw new PdfFormatException("Number expected before sc.");
596 }
597 }
598 else if (_token.equals("SC")) {
599 _o4 = _stack.pop();
600 _o3 = _stack.pop();
601 _o2 = _stack.pop();
602 if (_stack.peek() instanceof PjNumber) {
603 _o1 = _stack.pop();
604 } else {
605 _o1 = null;
606 }
607 if ( ( (_o1 == null) || (_o1 instanceof PjNumber) ) &&
608 (_o2 instanceof PjNumber) &&
609 (_o3 instanceof PjNumber) &&
610 (_o4 instanceof PjNumber) ) {
611 if (_o1 == null) {
612 _n1 = (PjNumber)_o2;
613 _n2 = (PjNumber)_o3;
614 _n3 = (PjNumber)_o4;
615 _stack.push(new XXSC(_n1, _n2, _n3));
616 } else {
617 _n1 = (PjNumber)_o1;
618 _n2 = (PjNumber)_o2;
619 _n3 = (PjNumber)_o3;
620 _n4 = (PjNumber)_o4;
621 _stack.push(new XXSC(_n1, _n2, _n3, _n4));
622 }
623 } else {
624 throw new PdfFormatException("Number expected before SC.");
625 }
626 }
627 else if (_token.equals("scn")) {
628 if (_stack.peek() instanceof PjName) {
630 _stack.pop();
631 }
632 while (_stack.peek() instanceof PjNumber) {
633 _stack.pop();
634 }
635 }
636 else if (_token.equals("rg")) {
637 _o3 = _stack.pop();
638 _o2 = _stack.pop();
639 _o1 = _stack.pop();
640 if ( (_o1 instanceof PjNumber) &&
641 (_o2 instanceof PjNumber) &&
642 (_o3 instanceof PjNumber) ) {
643 _n1 = (PjNumber)_o1;
644 _n2 = (PjNumber)_o2;
645 _n3 = (PjNumber)_o3;
646 } else {
647 throw new PdfFormatException("Number expected before rg.");
648 }
649 _stack.push(new Xrg(_n1, _n2, _n3));
650 }
651 else if (_token.equals("RG")) {
652 _o3 = _stack.pop();
653 _o2 = _stack.pop();
654 _o1 = _stack.pop();
655 if ( (_o1 instanceof PjNumber) &&
656 (_o2 instanceof PjNumber) &&
657 (_o3 instanceof PjNumber) ) {
658 _n1 = (PjNumber)_o1;
659 _n2 = (PjNumber)_o2;
660 _n3 = (PjNumber)_o3;
661 } else {
662 throw new PdfFormatException("Number expected before RG.");
663 }
664 _stack.push(new XXRG(_n1, _n2, _n3));
665 }
666 else if (_token.equals("re")) {
667 _o4 = _stack.pop();
668 _o3 = _stack.pop();
669 _o2 = _stack.pop();
670 _o1 = _stack.pop();
671 if ( (_o1 instanceof PjNumber) &&
672 (_o2 instanceof PjNumber) &&
673 (_o3 instanceof PjNumber) &&
674 (_o4 instanceof PjNumber) ) {
675 _n1 = (PjNumber)_o1;
676 _n2 = (PjNumber)_o2;
677 _n3 = (PjNumber)_o3;
678 _n4 = (PjNumber)_o4;
679 } else {
680 throw new PdfFormatException("Number expected before re.");
681 }
682 _stack.push(new Xre(_n1, _n2, _n3, _n4));
683 }
684 else if (_token.equals("Tf")) {
685 _o1 = _stack.pop();
686 if (_o1 instanceof PjNumber) {
687 _n1 = (PjNumber)(_o1);
688 } else {
689 throw new PdfFormatException("Number (font size) expected before Tf.");
690 }
691 _o1 = _stack.pop();
692 if (_o1 instanceof PjName) {
693 _m1 = (PjName)(_o1);
694 } else {
695 throw new PdfFormatException("Name (font name) expected before Tf.");
696 }
697 _stack.push(new XTf(_m1, _n1));
698 }
699 else if (_token.equals("\"")) {
700 _o1 = _stack.pop();
701 if (_o1 instanceof PjString) {
702 _s1 = (PjString)(_o1);
703 } else {
704 throw new PdfFormatException("String (text) expected before \".");
705 }
706 _o1 = _stack.pop();
707 if (_o1 instanceof PjNumber) {
708 _n2 = (PjNumber)(_o1);
709 } else {
710 throw new PdfFormatException("Number (a[c]) expected before \".");
711 }
712 _o1 = _stack.pop();
713 if (_o1 instanceof PjNumber) {
714 _n1 = (PjNumber)(_o1);
715 } else {
716 throw new PdfFormatException("Number (a[w]) expected before \".");
717 }
718 _stack.push(new Xquot(_n1, _n2, _s1));
719 }
720 else if (_token.equals("BMC")) {
721 _o1 = _stack.pop();
722 if (_o1 instanceof PjName) {
723 _m1 = (PjName)(_o1);
724 } else {
725 throw new PdfFormatException("Name (tag) expected before BMC.");
726 }
727 _stack.push(new XBMC(_m1));
728 }
729 else if (_token.equals("MP")) {
730 _o1 = _stack.pop();
731 if (_o1 instanceof PjName) {
732 _m1 = (PjName)(_o1);
733 } else {
734 throw new PdfFormatException("Name (tag) expected before MP.");
735 }
736 _stack.push(new XMP(_m1));
737 }
738 else if (_token.equals("gs")) {
739 _o1 = _stack.pop();
740 if (_o1 instanceof PjName) {
741 _m1 = (PjName)(_o1);
742 } else {
743 throw new PdfFormatException("Name (name) expected before gs.");
744 }
745 _stack.push(new Xgs(_m1));
746 }
747 else if (_token.equals("Do")) {
748 _o1 = _stack.pop();
749 if (_o1 instanceof PjName) {
750 _m1 = (PjName)(_o1);
751 } else {
752 throw new PdfFormatException("Name (XObject) expected before Do.");
753 }
754 _stack.push(new XDo(_m1));
755 }
756 else if (_token.equals("cs")) {
757 _o1 = _stack.pop();
758 if (_o1 instanceof PjName) {
759 _m1 = (PjName)(_o1);
760 } else {
761 throw new PdfFormatException("Name (color space) expected before cs.");
762 }
763 _stack.push(new Xcs(_m1));
764 }
765 else if (_token.equals("CS")) {
766 _o1 = _stack.pop();
767 if (_o1 instanceof PjName) {
768 _m1 = (PjName)(_o1);
769 } else {
770 throw new PdfFormatException("Name (color space) expected before CS.");
771 }
772 _stack.push(new XXCS(_m1));
773 }
774 else if (_token.equals("d")) {
775 _o1 = _stack.pop();
776 if (_o1 instanceof PjNumber) {
777 _n1 = (PjNumber)(_o1);
778 } else {
779 throw new PdfFormatException("Number (phase) expected before d.");
780 }
781 _o1 = _stack.pop();
782 if (_o1 instanceof PjArray) {
783 _a1 = (PjArray)(_o1);
784 } else {
785 throw new PdfFormatException("Array (dash pattern) expected before d.");
786 }
787 _stack.push(new Xd(_a1, _n1));
788 }
789 else if (_token.equals("TJ")) {
790 _o1 = _stack.pop();
791 if (_o1 instanceof PjArray) {
792 _a1 = (PjArray)(_o1);
793 } else {
794 throw new PdfFormatException("Array expected before TJ.");
795 }
796 _stack.push(new XXTJ(_a1));
797 }
798 else if (_token.equals("BDC")) {
799 _o1 = _stack.pop();
800 if ( ( ! (_o1 instanceof PjName) ) &&
801 ( ! (_o1 instanceof PjDictionary) ) ) {
802 throw new PdfFormatException("Name or dictionary (property list) expected before BDC.");
803 }
804 _o2 = _stack.pop();
805 if (_o2 instanceof PjName) {
806 _m1 = (PjName)(_o2);
807 } else {
808 throw new PdfFormatException("Name (tag) expected before BDC.");
809 }
810 if (_o1 instanceof PjName) {
811 _stack.push(new XBDC(_m1, (PjName)(_o1)));
812 } else {
813 _stack.push(new XBDC(_m1, (PjDictionary)(_o1)));
814 }
815 }
816 else if (_token.equals("DP")) {
817 _o1 = _stack.pop();
818 if ( ( ! (_o1 instanceof PjName) ) &&
819 ( ! (_o1 instanceof PjDictionary) ) ) {
820 throw new PdfFormatException("Name or dictionary (property list) expected before DP.");
821 }
822 _o2 = _stack.pop();
823 if (_o2 instanceof PjName) {
824 _m1 = (PjName)(_o2);
825 } else {
826 throw new PdfFormatException("Name (tag) expected before DP.");
827 }
828 if (_o1 instanceof PjName) {
829 _stack.push(new XDP(_m1, (PjName)(_o1)));
830 } else {
831 _stack.push(new XDP(_m1, (PjDictionary)(_o1)));
832 }
833 }
834 else if (_token.equals("Tj")) {
835 _o1 = _stack.pop();
836 if (_o1 instanceof PjString) {
837 _s1 = (PjString)(_o1);
838 } else {
839 throw new PdfFormatException("String (text) expected before Tj.");
840 }
841 _stack.push(new XTj(_s1));
842 }
843 else if (_token.equals("'")) {
844 _o1 = _stack.pop();
845 if (_o1 instanceof PjString) {
846 _s1 = (PjString)(_o1);
847 } else {
848 throw new PdfFormatException("String (text) expected before '.");
849 }
850 _stack.push(new Xapost(_s1));
851 }
852 else if (_token.equals("n")) {
853 _stack.push(new Xn());
854 }
855 else if (_token.equals("s")) {
856 _stack.push(new Xs());
857 }
858 else if (_token.equals("S")) {
859 _stack.push(new XXS());
860 }
861 else if (_token.equals("T*")) {
862 _stack.push(new XTstar());
863 }
864 else if ( (_token.equals("f")) || (_token.equals("F")) ) {
865 _stack.push(new Xf());
866 }
867 else if (_token.equals("f*")) {
868 _stack.push(new Xfstar());
869 }
870 else if (_token.equals("b")) {
871 _stack.push(new Xb());
872 }
873 else if (_token.equals("W")) {
874 _stack.push(new XXW());
875 }
876 else if (_token.equals("W*")) {
877 _stack.push(new XWstar());
878 }
879 else if (_token.equals("b*")) {
880 _stack.push(new Xbstar());
881 }
882 else if (_token.equals("B")) {
883 _stack.push(new XXB());
884 }
885 else if (_token.equals("B*")) {
886 _stack.push(new XXBstar());
887 }
888 else if (_token.equals("h")) {
889 _stack.push(new Xh());
890 }
891 else if (_token.equals("q")) {
892 _stack.push(new Xq());
893 }
894 else if (_token.equals("Q")) {
895 _stack.push(new XXQ());
896 }
897 else if (_token.equals("BX")) {
898 _stack.push(new XBX());
899 }
900 else if (_token.equals("EX")) {
901 _stack.push(new XEX());
902 }
903 else if (_token.equals("EMC")) {
904 _stack.push(new XEMC());
905 }
906 else if (_token.charAt(0) == '/') {
907 _stack.push(new PjName(_token.substring(1)));
908 }
909 else if (
910 (Character.isDigit(_token.charAt(0)))
911 || (_token.charAt(0) == '-')
912 || (_token.charAt(0) == '.') ) {
913 _stack.push(new PjNumber(new Float (_token).floatValue()));
914 }
915 else if (_token.charAt(0) == '(') {
916 _stack.push(new PjString(PjString.decodePdf(_token)));
917 }
918 else if (_token.equals("<<")) {
919 _stack.push("<<");
920 }
921 else if (_token.equals("[")) {
922 _stack.push("[");
923 }
924 else if (_token.equals("]")) {
925 _b1 = false;
926 _v1 = new Vector();
927 while ( ! _b1 ) {
928 _o1 = _stack.pop();
929 if ( (_o1 instanceof String ) &&
930 (((String )_o1).equals("[")) ) {
931 _b1 = true;
932 } else {
933 if ( ! (_o1 instanceof PjObject) ) {
934 throw new PdfFormatException("PDF object expected within array.");
935 }
936 _v1.insertElementAt(_o1, 0);
937 }
938 }
939 _stack.push(new PjArray(_v1));
940 }
941 else if (_token.equals("true")) {
942 _stack.push(new PjBoolean(true));
943 }
944 else if (_token.equals("false")) {
945 _stack.push(new PjBoolean(false));
946 }
947 else if ( (_token.equals("scn")) ||
948 (_token.equals("SCN")) ||
949 (_token.equals("sh")) ||
950 (_token.equals("ri")) ) {
951 _stack.pop();
953 }
954 else if (_token.startsWith("%%")) {
955 }
957 else {
958 throw new PdfFormatException("Token \"" + _token + "\" not recognized.");
959 }
960 }
961
962 private String _token;
963 private byte[] _imageData;
964 private Stack _stack;
965 private int _counter;
966 private byte[] _buffer;
967 private boolean _image;
968
969 private PjNumber _n1, _n2, _n3, _n4, _n5, _n6;
970 private Stack _k1;
971 private boolean _b1;
972 private int _x1, _x2;
973 private Vector _v1;
974 private Object _o1, _o2, _o3, _o4, _o5, _o6;
975 private PjName _m1;
976 private PjString _s1;
977 private PjArray _a1;
978 private Hashtable _h1;
979
980 }
981 |
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