/[public]/psiconv/trunk/lib/psiconv/parse_formula.c
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Diff of /psiconv/trunk/lib/psiconv/parse_formula.c

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Revision 102 Revision 142
… …
22 22
23#include <stdlib.h> 23#include <stdlib.h>
24 24
25#include "parse_routines.h" 25#include "parse_routines.h"
26#include "error.h" 26#include "error.h"
27
28#ifdef DMALLOC
29#include <dmalloc.h>
30#endif
31
27 32
28struct formula_element 33struct formula_element
29{ 34{
30 psiconv_formula_type_t formula_type; 35 psiconv_formula_type_t formula_type;
31 int number_of_args; 36 int number_of_args;
… …
46 {psiconv_formula_op_mul,2,"*"}, 51 {psiconv_formula_op_mul,2,"*"},
47 {psiconv_formula_op_div,2,"/"}, 52 {psiconv_formula_op_div,2,"/"},
48 {psiconv_formula_op_pow,2,"^"}, 53 {psiconv_formula_op_pow,2,"^"},
49 {psiconv_formula_op_pos,1,"+"}, 54 {psiconv_formula_op_pos,1,"+"},
50 {psiconv_formula_op_neg,1,"-"}, 55 {psiconv_formula_op_neg,1,"-"},
51 {psiconv_formula_unknown,0,"*UNKNOWN*"}, 56 {psiconv_formula_op_not,1,"NOT"},
52 {psiconv_formula_unknown,0,"*UNKNOWN*"}, 57 {psiconv_formula_op_and,2,"AND"},
53 {psiconv_formula_unknown,0,"*UNKNOWN*"}, /* 10 */ 58 {psiconv_formula_op_or,2,"OR"}, /* 10 */
54 {psiconv_formula_op_con,2,"&"}, 59 {psiconv_formula_op_con,2,"&"},
55 {psiconv_formula_op_bra,1,"{}"}, 60 {psiconv_formula_op_bra,1,"()"},
56 {psiconv_formula_unknown,0,"*UNKNOWN*"}, 61 {psiconv_formula_unknown,0,"*UNKNOWN*"},
57 {psiconv_formula_unknown,0,"*UNKNOWN*"}, 62 {psiconv_formula_unknown,0,"*UNKNOWN*"},
58 {psiconv_formula_mark_eof,0,"End of formula"}, 63 {psiconv_formula_mark_eof,0,"End of formula"},
59 {psiconv_formula_unknown,0,"*UNKNOWN*"}, 64 {psiconv_formula_unknown,0,"*UNKNOWN*"},
60 {psiconv_formula_unknown,0,"*UNKNOWN*"}, 65 {psiconv_formula_unknown,0,"*UNKNOWN*"},
… …
284 {psiconv_formula_unknown,0,"*UNKNOWN*"}, 289 {psiconv_formula_unknown,0,"*UNKNOWN*"},
285 {psiconv_formula_unknown,0,"*UNKNOWN*"}, 290 {psiconv_formula_unknown,0,"*UNKNOWN*"},
286 {psiconv_formula_unknown,0,"*UNKNOWN*"}, 291 {psiconv_formula_unknown,0,"*UNKNOWN*"},
287 {psiconv_formula_unknown,0,"*UNKNOWN*"}, 292 {psiconv_formula_unknown,0,"*UNKNOWN*"},
288 {psiconv_formula_unknown,0,"*UNKNOWN*"}, 293 {psiconv_formula_unknown,0,"*UNKNOWN*"},
289 {psiconv_formula_unknown,0,"*UNKNOWN*"},
290 {psiconv_formula_unknown,0,"*UNKNOWN*"},
291 {psiconv_formula_unknown,0,"*UNKNOWN*"},
292 {psiconv_formula_unknown,0,"*UNKNOWN*"}}; 294 {psiconv_formula_unknown,0,"*UNKNOWN*"}};
293
294 295
295static int psiconv_parse_sheet_ref(const psiconv_buffer buf,int lev, 296static int psiconv_parse_sheet_ref(const psiconv_buffer buf,int lev,
296 psiconv_u32 off, int *length, 297 psiconv_u32 off, int *length,
297 psiconv_sheet_ref_t *result) 298 psiconv_sheet_ref_t *result)
298{ 299{
… …
383 if (length) 384 if (length)
384 *length = 0; 385 *length = 0;
385 return res; 386 return res;
386} 387}
387 388
388int psiconv_parse_formula(const psiconv_buffer buf, int lev, 389static int psiconv_parse_formula_element_list(const psiconv_buffer buf, int lev,
389 psiconv_u32 off, int *length, 390 psiconv_u32 off, int *length,
390 psiconv_formula *result) 391 psiconv_formula *result,
392 psiconv_u32 maxlen)
391{ 393{
392 int res=0; 394 int res=0;
393 int len=0; 395 int len=0;
394 int leng; 396 int leng;
395 int eof = 0; 397 int eof = 0;
396 psiconv_u8 marker; 398 psiconv_u8 marker,submarker,submarker2;
397 psiconv_u32 bytelen;
398 psiconv_formula_list formula_stack; 399 psiconv_formula_list formula_stack;
399 psiconv_formula formula,subformula1,subformula2,subformula3,subformula4; 400 psiconv_formula formula,subformula,subformula1,subformula2,
401 subformula3,subformula4;
402 psiconv_u16 temp,nr_of_subs;
400 403
401 psiconv_progress(lev+1,off,"Going to read a formula"); 404 psiconv_progress(lev+1,off,"Going to read a formula element list");
402 if (!(*result = malloc(sizeof(**result)))) 405 if (!(*result = malloc(sizeof(**result))))
403 goto ERROR1; 406 goto ERROR1;
404 if (!(formula_stack = psiconv_list_new(sizeof(struct psiconv_formula_s)))) 407 if (!(formula_stack = psiconv_list_new(sizeof(struct psiconv_formula_s))))
405 goto ERROR2; 408 goto ERROR2;
406 if (!(formula = malloc(sizeof(*formula)))) 409 if (!(formula = malloc(sizeof(*formula))))
… …
418 subformula3->type = psiconv_formula_unknown; 421 subformula3->type = psiconv_formula_unknown;
419 if (!(subformula4 = malloc(sizeof(*subformula4)))) 422 if (!(subformula4 = malloc(sizeof(*subformula4))))
420 goto ERROR7; 423 goto ERROR7;
421 subformula4->type = psiconv_formula_unknown; 424 subformula4->type = psiconv_formula_unknown;
422 425
423 psiconv_progress(lev+2,off+len,
424 "Going to read the formula byte length");
425 bytelen = psiconv_read_S(buf,lev+2,off+len,&leng,&res);
426 if (res)
427 goto ERROR8;
428 psiconv_debug(lev+2,off+len,"Formula byte length: %d",bytelen);
429 len += leng;
430 bytelen += len;
431
432 psiconv_progress(lev+2,off+len,"Going to read the formula items");
433 while (!eof && len < bytelen) { 426 while (!eof && len+off < maxlen) {
434 psiconv_progress(lev+3,off+len,"Going to read a formula item marker"); 427 psiconv_progress(lev+3,off+len,"Going to read a formula item marker");
435 marker = psiconv_read_u8(buf,lev+2,off+len,&res); 428 marker = psiconv_read_u8(buf,lev+2,off+len,&res);
436 if (res) 429 if (res)
437 goto ERROR8; 430 goto ERROR8;
438 psiconv_debug(lev+3,off+len,"Marker: %02x (%s)",marker, 431 psiconv_debug(lev+3,off+len,"Marker: %02x (%s)",marker,
… …
440 len ++; 433 len ++;
441 434
442 if (formula_elements[marker].formula_type == psiconv_formula_unknown) { 435 if (formula_elements[marker].formula_type == psiconv_formula_unknown) {
443 psiconv_warn(lev+3,off+len,"Unknown formula marker found!"); 436 psiconv_warn(lev+3,off+len,"Unknown formula marker found!");
444 goto ERROR8; 437 goto ERROR8;
445 } else if (formula_elements[marker].formula_type == 438 } else if ((formula_elements[marker].formula_type ==
446 psiconv_formula_mark_eof) { 439 psiconv_formula_mark_eof) ||
440 (formula_elements[marker].formula_type ==
441 psiconv_formula_mark_opend) ||
442 (formula_elements[marker].formula_type ==
443 psiconv_formula_mark_opsep)) {
444 len--;
447 psiconv_progress(lev+3,off+len,"End of formula"); 445 psiconv_progress(lev+3,off+len,"End of this formula list");
448 eof = 1; 446 eof = 1;
449 } else if (formula_elements[marker].formula_type == 447 } else if (formula_elements[marker].formula_type ==
450 psiconv_formula_dat_int) { 448 psiconv_formula_dat_int) {
451 psiconv_progress(lev+3,off+len,"Next item: an integer"); 449 psiconv_progress(lev+3,off+len,"Next item: an integer");
452 formula->data.dat_int = psiconv_read_u32(buf,lev+2,off+len,&res); 450 formula->data.dat_int = psiconv_read_u32(buf,lev+2,off+len,&res);
… …
480 formula->type = formula_elements[marker].formula_type; 478 formula->type = formula_elements[marker].formula_type;
481 len += leng; 479 len += leng;
482 if ((res = psiconv_list_add(formula_stack,formula))) 480 if ((res = psiconv_list_add(formula_stack,formula)))
483 goto ERROR8; 481 goto ERROR8;
484 formula->type = psiconv_formula_unknown; 482 formula->type = psiconv_formula_unknown;
485 } else if (formula_elements[marker].formula_type == 483 } else if ((formula_elements[marker].formula_type ==
484 psiconv_formula_dat_cellblock) ||
485 (formula_elements[marker].formula_type ==
486 psiconv_formula_dat_cellblock) { 486 psiconv_formula_dat_vcellblock)) {
487 psiconv_progress(lev+3,off+len,"Next item: a cell block"); 487 psiconv_progress(lev+3,off+len,"Next item: a cell block");
488 if ((res = psiconv_parse_sheet_cell_block(buf,lev+2,off+len,&leng, 488 if ((res = psiconv_parse_sheet_cell_block(buf,lev+2,off+len,&leng,
489 &formula->data.dat_cellblock))) 489 &formula->data.dat_cellblock)))
490 goto ERROR8; 490 goto ERROR8;
491 formula->type = formula_elements[marker].formula_type; 491 formula->type = formula_elements[marker].formula_type;
492 len += leng; 492 len += leng;
493 if ((res = psiconv_list_add(formula_stack,formula))) 493 if ((res = psiconv_list_add(formula_stack,formula)))
494 goto ERROR8; 494 goto ERROR8;
495 formula->type = psiconv_formula_unknown; 495 formula->type = psiconv_formula_unknown;
496 } else if (formula_elements[marker].formula_type ==
497 psiconv_formula_dat_string) {
498 psiconv_progress(lev+3,off+len,"Next item: a string");
499 formula->data.dat_string =
500 psiconv_read_short_string(buf,lev+2,off+len,&leng,&res);
501 if (res)
502 goto ERROR8;
503 formula->type = formula_elements[marker].formula_type;
504 len += leng;
505 if ((res = psiconv_list_add(formula_stack,formula)))
506 goto ERROR8;
507 formula->type = psiconv_formula_unknown;
496 } else if ((formula_elements[marker].formula_type == 508 } else if ((formula_elements[marker].formula_type ==
497 psiconv_formula_dat_var) || 509 psiconv_formula_dat_var)) {
498 (formula_elements[marker].formula_type == 510 psiconv_progress(lev+3,off+len,"Next item: a variable reference");
499 psiconv_formula_dat_string) || 511 formula->data.dat_variable = psiconv_read_u32(buf,lev+2,off+len,&res);
500 (formula_elements[marker].formula_type == 512 if (res)
501 psiconv_formula_dat_vcellblock) ||
502 (formula_elements[marker].formula_type ==
503 psiconv_formula_mark_opsep) ||
504 (formula_elements[marker].formula_type ==
505 psiconv_formula_mark_opend)) {
506 psiconv_warn(lev+3,off+len,"Not yet supported formula mark!");
507 goto ERROR8; 513 goto ERROR8;
514 formula->type = formula_elements[marker].formula_type;
515 len += 4;
516 if ((res = psiconv_list_add(formula_stack,formula)))
517 goto ERROR8;
518 formula->type = psiconv_formula_unknown;
508 } else if (formula_elements[marker].number_of_args == -1) { 519 } else if (formula_elements[marker].number_of_args == -1) {
509 psiconv_warn(lev+3,off+len,"Vararg functions not yet supported!"); 520 psiconv_progress(lev+3,off+len,"Going to parse a vararg function");
521 if (!(formula->data.fun_operands =
522 psiconv_list_new(sizeof(*formula))))
523 goto ERROR8;
524 formula->type = formula_elements[marker].formula_type;
525 nr_of_subs = 0;
526 do {
527 nr_of_subs ++;
528 psiconv_progress(lev+4,off+len,"Going to read vararg argument %d",
529 nr_of_subs);
530 if ((res = psiconv_parse_formula_element_list(buf,lev+4,off+len,&leng,
531 &subformula,maxlen)))
532 goto ERROR8;
533 len += leng;
534 if ((res = psiconv_list_add(formula->data.fun_operands,subformula))) {
535 psiconv_free_formula(subformula);
536 goto ERROR8;
537 }
538 free(subformula);
539 psiconv_progress(lev+4,off+len,"Going to read the next marker");
540 submarker = psiconv_read_u8(buf,lev+4,off+len,&res);
541 len ++;
542 if (res)
543 goto ERROR8;
544 submarker2 = psiconv_read_u8(buf,lev+4,off+len,&res);
545 if (res)
546 goto ERROR8;
547 } while ((formula_elements[submarker].formula_type
548 == psiconv_formula_mark_opsep) &&
549 (formula_elements[submarker2].formula_type
550 != psiconv_formula_mark_opend));
551 if ((formula_elements[submarker].formula_type ==
552 psiconv_formula_mark_opsep) &&
553 (formula_elements[submarker2].formula_type ==
554 psiconv_formula_mark_opend)) {
555 submarker=submarker2;
556 len++;
557 }
558 if (formula_elements[submarker].formula_type
559 != psiconv_formula_mark_opend) {
560 psiconv_warn(lev+3,off+len,"Formula corrupted!");
561 psiconv_debug(lev+3,off+len,"Found unexpected marker %02x",submarker);
510 goto ERROR8; 562 goto ERROR8;
563 }
564 psiconv_progress(lev+3,off+len,"Going to read the repeated marker %02x",
565 marker);
566 submarker = psiconv_read_u8(buf,lev+3,off+len,&res);
567 if (res)
568 goto ERROR8;
569 if (submarker != marker) {
570 psiconv_warn(lev+3,off+len,"Formula corrupted!");
571 psiconv_debug(lev+3,off+len,"Expected marker %02x, found %02x",
572 marker,submarker);
573 goto ERROR8;
574 }
575 len++;
576 psiconv_progress(lev+3,off+len,
577 "Going to read the number of arguments (%d expected)",
578 nr_of_subs);
579 temp = psiconv_read_u16(buf,lev+3,off+len,&res);
580 if (res)
581 goto ERROR8;
582 if (temp != nr_of_subs) {
583 psiconv_warn(lev+3,off+len,"Formula corrupted!");
584 psiconv_debug(lev+3,off+len,
585 "Read %d arguments, but formula says there are %d",
586 nr_of_subs,temp);
587 goto ERROR8;
588 }
589 len += 2;
590 if ((res = psiconv_list_add(formula_stack,formula)))
591 goto ERROR8;
592 formula->type = psiconv_formula_unknown;
511 } else { 593 } else {
512 if (formula_elements[marker].number_of_args > 0) 594 if (formula_elements[marker].number_of_args > 0)
513 if ((res = psiconv_list_pop(formula_stack,subformula1))) 595 if ((res = psiconv_list_pop(formula_stack,subformula1)))
514 goto ERROR8; 596 goto ERROR8;
515 if (formula_elements[marker].number_of_args > 1) 597 if (formula_elements[marker].number_of_args > 1)
… …
541 goto ERROR8; 623 goto ERROR8;
542 subformula4->type = subformula3->type = subformula2->type = 624 subformula4->type = subformula3->type = subformula2->type =
543 subformula1->type = formula->type = psiconv_formula_unknown; 625 subformula1->type = formula->type = psiconv_formula_unknown;
544 } 626 }
545 } 627 }
546 if ((len != bytelen) || !eof) { 628 if ((len+off > maxlen) || !eof) {
547 psiconv_warn(lev+2,off+len,"Formula corrupted!"); 629 psiconv_warn(lev+2,off+len,"Formula corrupted!");
548 psiconv_debug(lev+2,off+len,"Expected end: %04x, found end: %04x", 630 psiconv_debug(lev+2,off+len,"Expected end: %04x, found end: %04x",
549 bytelen,len); 631 maxlen,len+off);
550 goto ERROR8; 632 goto ERROR8;
551 } 633 }
552 if ((psiconv_list_length(formula_stack)) != 1) { 634 if ((psiconv_list_length(formula_stack)) != 1) {
553 psiconv_warn(lev+2,off+len,"Formula corrupted!"); 635 psiconv_warn(lev+2,off+len,"Formula corrupted!");
554 psiconv_debug(lev+2,off+len,"More than one item left on the stack (%d)", 636 psiconv_debug(lev+2,off+len,"More than one item left on the stack (%d)",
… …
562 644
563 if (length) 645 if (length)
564 *length = len; 646 *length = len;
565 647
566 psiconv_progress(lev,off+len-1, 648 psiconv_progress(lev,off+len-1,
567 "End of formula (total length: %08x)", len); 649 "End of formula element list (total length: %08x)", len);
568 return 0; 650 return 0;
569 651
570ERROR8: 652ERROR8:
571 psiconv_free_formula(subformula4); 653 psiconv_free_formula(subformula4);
572ERROR7: 654ERROR7:
… …
580ERROR3: 662ERROR3:
581 psiconv_free_formula_list(formula_stack); 663 psiconv_free_formula_list(formula_stack);
582ERROR2: 664ERROR2:
583 free (*result); 665 free (*result);
584ERROR1: 666ERROR1:
585 psiconv_warn(lev+1,off,"Reading of formula failed"); 667 psiconv_warn(lev+1,off,"Reading of formula element list failed");
586 if (length) 668 if (length)
587 *length = 0; 669 *length = 0;
588 if (!res) 670 if (!res)
589 return -PSICONV_E_NOMEM; 671 return -PSICONV_E_NOMEM;
590 else 672 else
591 return res; 673 return res;
592} 674}
593 675
676
677
678
679int psiconv_parse_formula(const psiconv_buffer buf, int lev,
680 psiconv_u32 off, int *length,
681 psiconv_formula *result)
682{
683 int res=0;
684 int len=0;
685 int leng;
686 psiconv_u32 bytelen,formula_end;
687 psiconv_u8 temp;
688
689 psiconv_progress(lev+1,off,"Going to read a formula");
690
691 psiconv_progress(lev+2,off+len,
692 "Going to read the formula byte length");
693 bytelen = psiconv_read_S(buf,lev+2,off+len,&leng,&res);
694 if (res)
695 goto ERROR1;
696 psiconv_debug(lev+2,off+len,"Formula byte length: %d",bytelen);
697 len += leng;
698 bytelen += len;
699 formula_end = off + bytelen;
700
701 psiconv_progress(lev+2,off+len,"Going to read the formula elements list");
702 if ((res = psiconv_parse_formula_element_list(buf,lev+2,off+len,&leng,
703 result,formula_end)))
704 goto ERROR1;
705 len += leng;
706
707 psiconv_progress(lev+2,off+len,"Going to read the eof marker");
708 temp = psiconv_read_u8(buf,lev+2,off+len,&res);
709 if (res)
710 goto ERROR2;
711 if (formula_elements[temp].formula_type != psiconv_formula_mark_eof) {
712 psiconv_warn(lev+2,off+len,"Formula corrupted!");
713 psiconv_debug(lev+2,off+len,"Expected marker: %02x, found byte: %02x",
714 0x15,temp);
715 goto ERROR2;
716 }
717 len ++;
718
719 if (off+len != formula_end) {
720 psiconv_warn(lev+2,off+len,"Formula corrupted!");
721 psiconv_debug(lev+2,off+len,"Expected end: %04x, found end: %04x",
722 formula_end,len+off);
723 goto ERROR2;
724 }
725
726 if (length)
727 *length = len;
728
729 psiconv_progress(lev,off+len-1,
730 "End of formula (total length: %08x)", len);
731 return 0;
732
733ERROR2:
734 psiconv_free_formula(*result);
735ERROR1:
736 psiconv_warn(lev+1,off,"Reading of formula failed");
737 if (length)
738 *length = 0;
739 if (!res)
740 return -PSICONV_E_NOMEM;
741 else
742 return res;
743}
744
745
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