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

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Revision 108 - (show annotations)
Thu Feb 15 21:54:23 2001 UTC (23 years, 1 month ago) by frodo
File MIME type: text/plain
File size: 29918 byte(s)
(Frodo) Fixed formula numbers

1 /*
2 parse_formula.c - Part of psiconv, a PSION 5 file formats converter
3 Copyright (c) 2001 Frodo Looijaard <frodol@dds.nl>
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19
20 #include "config.h"
21 #include "compat.h"
22
23 #include <stdlib.h>
24
25 #include "parse_routines.h"
26 #include "error.h"
27
28 struct formula_element
29 {
30 psiconv_formula_type_t formula_type;
31 int number_of_args;
32 const char* name;
33 };
34
35 static struct formula_element formula_elements[256] =
36 {
37 {psiconv_formula_unknown,0,"*UNKNOWN*"}, /* 0 */
38 {psiconv_formula_op_lt,2,"<"},
39 {psiconv_formula_op_le,2,"<="},
40 {psiconv_formula_op_gt,2,">"},
41 {psiconv_formula_op_ge,2,">="},
42 {psiconv_formula_op_ne,2,"<>"},
43 {psiconv_formula_op_eq,2,"="},
44 {psiconv_formula_op_add,2,"+"},
45 {psiconv_formula_op_sub,2,"-"},
46 {psiconv_formula_op_mul,2,"*"},
47 {psiconv_formula_op_div,2,"/"},
48 {psiconv_formula_op_pow,2,"^"},
49 {psiconv_formula_op_pos,1,"+"},
50 {psiconv_formula_op_neg,1,"-"},
51 {psiconv_formula_op_not,1,"NOT"},
52 {psiconv_formula_op_and,2,"AND"},
53 {psiconv_formula_op_or,2,"OR"}, /* 10 */
54 {psiconv_formula_op_con,2,"&"},
55 {psiconv_formula_op_bra,1,"()"},
56 {psiconv_formula_unknown,0,"*UNKNOWN*"},
57 {psiconv_formula_unknown,0,"*UNKNOWN*"},
58 {psiconv_formula_mark_eof,0,"End of formula"},
59 {psiconv_formula_unknown,0,"*UNKNOWN*"},
60 {psiconv_formula_unknown,0,"*UNKNOWN*"},
61 {psiconv_formula_unknown,0,"*UNKNOWN*"},
62 {psiconv_formula_unknown,0,"*UNKNOWN*"},
63 {psiconv_formula_unknown,0,"*UNKNOWN*"},
64 {psiconv_formula_unknown,0,"*UNKNOWN*"},
65 {psiconv_formula_unknown,0,"*UNKNOWN*"},
66 {psiconv_formula_unknown,0,"*UNKNOWN*"},
67 {psiconv_formula_unknown,0,"*UNKNOWN*"},
68 {psiconv_formula_dat_float,0,"Floating point number"},
69 {psiconv_formula_dat_int,0,"Signed integer number"}, /* 20 */
70 {psiconv_formula_unknown,0,"*UNKNOWN*"},
71 {psiconv_formula_unknown,0,"*UNKNOWN*"},
72 {psiconv_formula_unknown,0,"*UNKNOWN*"},
73 {psiconv_formula_unknown,0,"*UNKNOWN*"},
74 {psiconv_formula_dat_var,0,"Named variable"},
75 {psiconv_formula_dat_string,0,"String"},
76 {psiconv_formula_dat_cellref,0,"Cell reference"},
77 {psiconv_formula_dat_cellblock,0,"Cell block"},
78 {psiconv_formula_dat_vcellblock,0,"Cell block {varargs}"},
79 {psiconv_formula_mark_opsep,0,"Operand separator"},
80 {psiconv_formula_mark_opend,0,"Operand list end"},
81 {psiconv_formula_unknown,0,"*UNKNOWN*"},
82 {psiconv_formula_unknown,0,"*UNKNOWN*"},
83 {psiconv_formula_unknown,0,"*UNKNOWN*"},
84 {psiconv_formula_unknown,0,"*UNKNOWN*"},
85 {psiconv_formula_unknown,0,"*UNKNOWN*"}, /* 30 */
86 {psiconv_formula_unknown,0,"*UNKNOWN*"},
87 {psiconv_formula_unknown,0,"*UNKNOWN*"},
88 {psiconv_formula_fun_false,0,"FALSE"},
89 {psiconv_formula_fun_if,3,"IF"},
90 {psiconv_formula_fun_true,0,"TRUE"},
91 {psiconv_formula_fun_cell,2,"CELL"},
92 {psiconv_formula_fun_errortype,0,"ERRORTYPE"},
93 {psiconv_formula_fun_isblank,1,"ISBLANK"},
94 {psiconv_formula_fun_iserr,1,"ISERR"},
95 {psiconv_formula_fun_iserror,1,"ISERROR"},
96 {psiconv_formula_fun_islogical,1,"ISLOGICAL"},
97 {psiconv_formula_fun_isna,1,"ISNA"},
98 {psiconv_formula_fun_isnontext,1,"ISNONTEXT"},
99 {psiconv_formula_fun_isnumber,1,"ISNUMBER"},
100 {psiconv_formula_fun_istext,1,"ISTEXT"},
101 {psiconv_formula_fun_n,1,"N"}, /* 40 */
102 {psiconv_formula_fun_type,1,"TYPE"},
103 {psiconv_formula_fun_address,2,"ADDRESS"},
104 {psiconv_formula_fun_column,1,"COLUMN"},
105 {psiconv_formula_fun_columns,1,"COLUMNS"},
106 {psiconv_formula_fun_hlookup,3,"HLOOKUP"},
107 {psiconv_formula_fun_index,3,"INDEX"},
108 {psiconv_formula_fun_indirect,1,"INDIRECT"},
109 {psiconv_formula_fun_lookup,3,"LOOKUP"},
110 {psiconv_formula_fun_offset,3,"OFFSET"},
111 {psiconv_formula_fun_row,1,"ROW"},
112 {psiconv_formula_fun_rows,1,"ROWS"},
113 {psiconv_formula_fun_vlookup,3,"VLOOKUP"},
114 {psiconv_formula_fun_char,1,"CHAR"},
115 {psiconv_formula_fun_code,1,"CODE"},
116 {psiconv_formula_fun_exact,2,"EXACT"},
117 {psiconv_formula_fun_find,3,"FIND"}, /* 50 */
118 {psiconv_formula_fun_left,2,"LEFT"},
119 {psiconv_formula_fun_len,1,"LEN"},
120 {psiconv_formula_fun_lower,1,"LOWER"},
121 {psiconv_formula_fun_mid,3,"MID"},
122 {psiconv_formula_fun_proper,1,"PROPER"},
123 {psiconv_formula_fun_replace,4,"REPLACE"},
124 {psiconv_formula_fun_rept,2,"REPT"},
125 {psiconv_formula_fun_right,2,"RIGHT"},
126 {psiconv_formula_fun_string,2,"STRING"},
127 {psiconv_formula_fun_t,1,"T"},
128 {psiconv_formula_fun_trim,1,"TRIM"},
129 {psiconv_formula_fun_upper,1,"UPPER"},
130 {psiconv_formula_fun_value,1,"VALUE"},
131 {psiconv_formula_fun_date,3,"DATE"},
132 {psiconv_formula_fun_datevalue,1,"DATEVALUE"},
133 {psiconv_formula_fun_day,1,"DAY"}, /* 60 */
134 {psiconv_formula_fun_hour,1,"HOUR"},
135 {psiconv_formula_fun_minute,1,"MINUTE"},
136 {psiconv_formula_fun_month,1,"MONTH"},
137 {psiconv_formula_fun_now,0,"NOW"},
138 {psiconv_formula_fun_second,1,"SECOND"},
139 {psiconv_formula_fun_today,0,"TODAY"},
140 {psiconv_formula_fun_time,3,"TIME"},
141 {psiconv_formula_fun_timevalue,1,"TIMEVALUE"},
142 {psiconv_formula_fun_year,1,"YEAR"},
143 {psiconv_formula_fun_abs,1,"ABS"},
144 {psiconv_formula_fun_acos,1,"ACOS"},
145 {psiconv_formula_fun_asin,1,"ASIN"},
146 {psiconv_formula_fun_atan,1,"ATAN"},
147 {psiconv_formula_fun_atan2,2,"ATAN2"},
148 {psiconv_formula_fun_cos,1,"COS"},
149 {psiconv_formula_fun_degrees,0,"DEGREES"}, /* 70 */
150 {psiconv_formula_fun_exp,1,"EXP"},
151 {psiconv_formula_fun_fact,1,"FACT"},
152 {psiconv_formula_fun_int,1,"INT"},
153 {psiconv_formula_fun_ln,1,"LN"},
154 {psiconv_formula_fun_log10,1,"LOG10"},
155 {psiconv_formula_fun_mod,2,"MOD"},
156 {psiconv_formula_fun_pi,0,"PI"},
157 {psiconv_formula_fun_radians,1,"RADIANS"},
158 {psiconv_formula_fun_rand,0,"RAND"},
159 {psiconv_formula_fun_round,2,"ROUND"},
160 {psiconv_formula_fun_sign,1,"SIGN"},
161 {psiconv_formula_fun_sin,1,"SIN"},
162 {psiconv_formula_fun_sqrt,1,"SQRT"},
163 {psiconv_formula_fun_sumproduct,2,"SUMPRODUCT"},
164 {psiconv_formula_fun_tan,1,"TAN"},
165 {psiconv_formula_fun_trunc,1,"TRUNC"}, /* 80 */
166 {psiconv_formula_fun_cterm,3,"CTERM"},
167 {psiconv_formula_fun_ddb,4,"DDB"},
168 {psiconv_formula_fun_fv,3,"FV"},
169 {psiconv_formula_fun_irr,2,"IRR"},
170 {psiconv_formula_fun_npv,2,"NPV"},
171 {psiconv_formula_fun_pmt,3,"PMT"},
172 {psiconv_formula_fun_pv,3,"PV"},
173 {psiconv_formula_fun_rate,3,"RATE"},
174 {psiconv_formula_fun_sln,3,"SLN"},
175 {psiconv_formula_fun_syd,4,"SYD"},
176 {psiconv_formula_fun_term,3,"TERM"},
177 {psiconv_formula_fun_combin,2,"COMBIN"},
178 {psiconv_formula_fun_permut,2,"PERMUT"},
179 {psiconv_formula_vfn_average,-1,"AVERAGE"},
180 {psiconv_formula_vfn_choose,-1,"CHOOSE"},
181 {psiconv_formula_vfn_count,-1,"COUNT"}, /* 90 */
182 {psiconv_formula_vfn_counta,-1,"COUNTA"},
183 {psiconv_formula_vfn_countblank,-1,"COUNTBLANK"},
184 {psiconv_formula_vfn_max,-1,"MAX"},
185 {psiconv_formula_vfn_min,-1,"MIN"},
186 {psiconv_formula_vfn_product,-1,"PRODUCT"},
187 {psiconv_formula_vfn_stdevp,-1,"STDEVP"},
188 {psiconv_formula_vfn_stdev,-1,"STDEV"},
189 {psiconv_formula_vfn_sum,-1,"SUM"},
190 {psiconv_formula_vfn_sumsq,-1,"SUMSQ"},
191 {psiconv_formula_vfn_varp,-1,"VARP"},
192 {psiconv_formula_vfn_var,-1,"VAR"},
193 {psiconv_formula_unknown,0,"*UNKNOWN*"},
194 {psiconv_formula_unknown,0,"*UNKNOWN*"},
195 {psiconv_formula_unknown,0,"*UNKNOWN*"},
196 {psiconv_formula_unknown,0,"*UNKNOWN*"},
197 {psiconv_formula_unknown,0,"*UNKNOWN*"}, /* A0 */
198 {psiconv_formula_unknown,0,"*UNKNOWN*"},
199 {psiconv_formula_unknown,0,"*UNKNOWN*"},
200 {psiconv_formula_unknown,0,"*UNKNOWN*"},
201 {psiconv_formula_unknown,0,"*UNKNOWN*"},
202 {psiconv_formula_unknown,0,"*UNKNOWN*"},
203 {psiconv_formula_unknown,0,"*UNKNOWN*"},
204 {psiconv_formula_unknown,0,"*UNKNOWN*"},
205 {psiconv_formula_unknown,0,"*UNKNOWN*"},
206 {psiconv_formula_unknown,0,"*UNKNOWN*"},
207 {psiconv_formula_unknown,0,"*UNKNOWN*"},
208 {psiconv_formula_unknown,0,"*UNKNOWN*"},
209 {psiconv_formula_unknown,0,"*UNKNOWN*"},
210 {psiconv_formula_unknown,0,"*UNKNOWN*"},
211 {psiconv_formula_unknown,0,"*UNKNOWN*"},
212 {psiconv_formula_unknown,0,"*UNKNOWN*"},
213 {psiconv_formula_unknown,0,"*UNKNOWN*"}, /* B0 */
214 {psiconv_formula_unknown,0,"*UNKNOWN*"},
215 {psiconv_formula_unknown,0,"*UNKNOWN*"},
216 {psiconv_formula_unknown,0,"*UNKNOWN*"},
217 {psiconv_formula_unknown,0,"*UNKNOWN*"},
218 {psiconv_formula_unknown,0,"*UNKNOWN*"},
219 {psiconv_formula_unknown,0,"*UNKNOWN*"},
220 {psiconv_formula_unknown,0,"*UNKNOWN*"},
221 {psiconv_formula_unknown,0,"*UNKNOWN*"},
222 {psiconv_formula_unknown,0,"*UNKNOWN*"},
223 {psiconv_formula_unknown,0,"*UNKNOWN*"},
224 {psiconv_formula_unknown,0,"*UNKNOWN*"},
225 {psiconv_formula_unknown,0,"*UNKNOWN*"},
226 {psiconv_formula_unknown,0,"*UNKNOWN*"},
227 {psiconv_formula_unknown,0,"*UNKNOWN*"},
228 {psiconv_formula_unknown,0,"*UNKNOWN*"},
229 {psiconv_formula_unknown,0,"*UNKNOWN*"}, /* C0 */
230 {psiconv_formula_unknown,0,"*UNKNOWN*"},
231 {psiconv_formula_unknown,0,"*UNKNOWN*"},
232 {psiconv_formula_unknown,0,"*UNKNOWN*"},
233 {psiconv_formula_unknown,0,"*UNKNOWN*"},
234 {psiconv_formula_unknown,0,"*UNKNOWN*"},
235 {psiconv_formula_unknown,0,"*UNKNOWN*"},
236 {psiconv_formula_unknown,0,"*UNKNOWN*"},
237 {psiconv_formula_unknown,0,"*UNKNOWN*"},
238 {psiconv_formula_unknown,0,"*UNKNOWN*"},
239 {psiconv_formula_unknown,0,"*UNKNOWN*"},
240 {psiconv_formula_unknown,0,"*UNKNOWN*"},
241 {psiconv_formula_unknown,0,"*UNKNOWN*"},
242 {psiconv_formula_unknown,0,"*UNKNOWN*"},
243 {psiconv_formula_unknown,0,"*UNKNOWN*"},
244 {psiconv_formula_unknown,0,"*UNKNOWN*"},
245 {psiconv_formula_unknown,0,"*UNKNOWN*"}, /* D0 */
246 {psiconv_formula_unknown,0,"*UNKNOWN*"},
247 {psiconv_formula_unknown,0,"*UNKNOWN*"},
248 {psiconv_formula_unknown,0,"*UNKNOWN*"},
249 {psiconv_formula_unknown,0,"*UNKNOWN*"},
250 {psiconv_formula_unknown,0,"*UNKNOWN*"},
251 {psiconv_formula_unknown,0,"*UNKNOWN*"},
252 {psiconv_formula_unknown,0,"*UNKNOWN*"},
253 {psiconv_formula_unknown,0,"*UNKNOWN*"},
254 {psiconv_formula_unknown,0,"*UNKNOWN*"},
255 {psiconv_formula_unknown,0,"*UNKNOWN*"},
256 {psiconv_formula_unknown,0,"*UNKNOWN*"},
257 {psiconv_formula_unknown,0,"*UNKNOWN*"},
258 {psiconv_formula_unknown,0,"*UNKNOWN*"},
259 {psiconv_formula_unknown,0,"*UNKNOWN*"},
260 {psiconv_formula_unknown,0,"*UNKNOWN*"},
261 {psiconv_formula_unknown,0,"*UNKNOWN*"}, /* E0 */
262 {psiconv_formula_unknown,0,"*UNKNOWN*"},
263 {psiconv_formula_unknown,0,"*UNKNOWN*"},
264 {psiconv_formula_unknown,0,"*UNKNOWN*"},
265 {psiconv_formula_unknown,0,"*UNKNOWN*"},
266 {psiconv_formula_unknown,0,"*UNKNOWN*"},
267 {psiconv_formula_unknown,0,"*UNKNOWN*"},
268 {psiconv_formula_unknown,0,"*UNKNOWN*"},
269 {psiconv_formula_unknown,0,"*UNKNOWN*"},
270 {psiconv_formula_unknown,0,"*UNKNOWN*"},
271 {psiconv_formula_unknown,0,"*UNKNOWN*"},
272 {psiconv_formula_unknown,0,"*UNKNOWN*"},
273 {psiconv_formula_unknown,0,"*UNKNOWN*"},
274 {psiconv_formula_unknown,0,"*UNKNOWN*"},
275 {psiconv_formula_unknown,0,"*UNKNOWN*"},
276 {psiconv_formula_unknown,0,"*UNKNOWN*"},
277 {psiconv_formula_unknown,0,"*UNKNOWN*"}, /* F0 */
278 {psiconv_formula_unknown,0,"*UNKNOWN*"},
279 {psiconv_formula_unknown,0,"*UNKNOWN*"},
280 {psiconv_formula_unknown,0,"*UNKNOWN*"},
281 {psiconv_formula_unknown,0,"*UNKNOWN*"},
282 {psiconv_formula_unknown,0,"*UNKNOWN*"},
283 {psiconv_formula_unknown,0,"*UNKNOWN*"},
284 {psiconv_formula_unknown,0,"*UNKNOWN*"},
285 {psiconv_formula_unknown,0,"*UNKNOWN*"},
286 {psiconv_formula_unknown,0,"*UNKNOWN*"},
287 {psiconv_formula_unknown,0,"*UNKNOWN*"},
288 {psiconv_formula_unknown,0,"*UNKNOWN*"},
289 {psiconv_formula_unknown,0,"*UNKNOWN*"}};
290
291 static psiconv_string_t psiconv_read_sheet_string(const psiconv_buffer buf,
292 int lev,
293 psiconv_u32 off,int *length, int *status)
294 {
295 int stringlen,i,len,localstatus;
296 psiconv_string_t result;
297 char *res_copy;
298
299 psiconv_progress(lev+1,off,"Going to read a sheet string");
300
301 stringlen = psiconv_read_u8(buf,lev+2,off,&localstatus);
302 if (localstatus)
303 goto ERROR1;
304 psiconv_debug(lev+2,off,"Length: %i",stringlen);
305 len = 1;
306
307 result = malloc(stringlen + 1);
308 if (!result)
309 goto ERROR1;
310 for (i = 0; (i < stringlen) && !localstatus; i++)
311 result[i] = psiconv_read_u8(buf,lev,off+i+len,&localstatus);
312 if (localstatus)
313 goto ERROR2;
314 result[stringlen] = 0;
315 len += stringlen;
316
317 res_copy = psiconv_make_printable(result);
318 if (!res_copy)
319 goto ERROR2;
320 psiconv_debug(lev+2,off,"Contents: `%s'",res_copy);
321 free(res_copy);
322
323 if (length)
324 *length = len;
325
326 if (status)
327 *status = 0;
328
329 psiconv_progress(lev+1,off+len-1,"End of sheet string (total length: %08x)",
330 len);
331
332 return result;
333
334
335 ERROR2:
336 free(result);
337 ERROR1:
338 psiconv_warn(lev+1,off,"Reading of sheet string failed");
339 if (status)
340 *status = localstatus;
341 if (length)
342 *length = 0;
343 return NULL;
344 }
345
346
347 static int psiconv_parse_sheet_ref(const psiconv_buffer buf,int lev,
348 psiconv_u32 off, int *length,
349 psiconv_sheet_ref_t *result)
350 {
351 int res;
352 psiconv_u16 temp;
353
354 psiconv_progress(lev+1,off,"Going to read a sheet ref");
355 psiconv_progress(lev+2,off,"Going to read the offset encoding");
356 temp = psiconv_read_u16(buf,lev+2,off,&res);
357 if (res) {
358 if (length)
359 *length = 0;
360 return res;
361 }
362 psiconv_debug(lev+2,off,"Encoded word: %04x",temp);
363 result->absolute = (temp & 0x4000)?psiconv_bool_true:psiconv_bool_false;
364 result->offset = (temp & 0x3fff) * ((temp & 0x8000)?-1:1);
365 psiconv_debug(lev+2,off,"Reference: %s offset %d",
366 result->absolute?"absolute":"relative",result->offset);
367 if (length)
368 *length = 2;
369 return 0;
370 }
371
372 static int psiconv_parse_sheet_cell_reference(const psiconv_buffer buf,int lev,
373 psiconv_u32 off, int *length,
374 psiconv_sheet_cell_reference_t *result)
375 {
376 int len = 0;
377 int leng,res;
378 psiconv_u8 temp;
379
380 psiconv_progress(lev+1,off+len,"Going to read a sheet cell reference");
381 psiconv_progress(lev+2,off+len,"Going to read the row reference");
382 if ((res = psiconv_parse_sheet_ref(buf,lev+2,off+len,&leng,&result->row)))
383 goto ERROR;
384 len += leng;
385 psiconv_progress(lev+2,off+len,"Going to read the column reference");
386 if ((res = psiconv_parse_sheet_ref(buf,lev+2,off+len,&leng,&result->column)))
387 goto ERROR;
388 len += leng;
389
390 psiconv_progress(lev+2,off+len,
391 "Going to read the trailing byte (%02x expected)",0);
392 temp = psiconv_read_u8(buf,lev+2,off+len,&res);
393 if (res)
394 goto ERROR;
395 if (temp != 0) {
396 psiconv_warn(lev+2,off+len,"Unknown byte in cell reference (ignored");
397 psiconv_debug(lev+2,off+len,"Trailing byte: %02x",temp);
398 }
399 len ++;
400 psiconv_progress(lev,off+len-1,
401 "End of cell reference (total length: %08x)", len);
402 if (length)
403 *length = len;
404 return 0;
405 ERROR:
406 if (length)
407 *length = 0;
408 return res;
409 }
410
411 static int psiconv_parse_sheet_cell_block(const psiconv_buffer buf,int lev,
412 psiconv_u32 off, int *length,
413 psiconv_sheet_cell_block_t *result)
414 {
415 int len = 0;
416 int leng,res;
417
418 psiconv_progress(lev+1,off+len,"Going to read a sheet cell block");
419 psiconv_progress(lev+2,off+len,"Going to read the first cell");
420 if ((res = psiconv_parse_sheet_cell_reference(buf,lev+2,off+len,&leng,
421 &result->first)))
422 goto ERROR;
423 len += leng;
424 psiconv_progress(lev+2,off+len,"Going to read the last cell");
425 if ((res = psiconv_parse_sheet_cell_reference(buf,lev+2,off+len,&leng,
426 &result->last)))
427 goto ERROR;
428 len += leng;
429 psiconv_progress(lev,off+len-1,
430 "End of cell block (total length: %08x)", len);
431 if (length)
432 *length = len;
433 return 0;
434 ERROR:
435 if (length)
436 *length = 0;
437 return res;
438 }
439
440 static int psiconv_parse_formula_element_list(const psiconv_buffer buf, int lev,
441 psiconv_u32 off, int *length,
442 psiconv_formula *result,
443 psiconv_u32 maxlen)
444 {
445 int res=0;
446 int len=0;
447 int leng;
448 int eof = 0;
449 psiconv_u8 marker,submarker;
450 psiconv_formula_list formula_stack;
451 psiconv_formula formula,subformula,subformula1,subformula2,
452 subformula3,subformula4;
453 psiconv_u16 temp,nr_of_subs;
454
455 psiconv_progress(lev+1,off,"Going to read a formula element list");
456 if (!(*result = malloc(sizeof(**result))))
457 goto ERROR1;
458 if (!(formula_stack = psiconv_list_new(sizeof(struct psiconv_formula_s))))
459 goto ERROR2;
460 if (!(formula = malloc(sizeof(*formula))))
461 goto ERROR3;
462 /* By setting the type to unknown, we can safely call psiconv_free_formula */
463 formula->type = psiconv_formula_unknown;
464 if (!(subformula1 = malloc(sizeof(*subformula1))))
465 goto ERROR4;
466 subformula1->type = psiconv_formula_unknown;
467 if (!(subformula2 = malloc(sizeof(*subformula2))))
468 goto ERROR5;
469 subformula2->type = psiconv_formula_unknown;
470 if (!(subformula3 = malloc(sizeof(*subformula3))))
471 goto ERROR6;
472 subformula3->type = psiconv_formula_unknown;
473 if (!(subformula4 = malloc(sizeof(*subformula4))))
474 goto ERROR7;
475 subformula4->type = psiconv_formula_unknown;
476
477 while (!eof && len+off < maxlen) {
478 psiconv_progress(lev+3,off+len,"Going to read a formula item marker");
479 marker = psiconv_read_u8(buf,lev+2,off+len,&res);
480 if (res)
481 goto ERROR8;
482 psiconv_debug(lev+3,off+len,"Marker: %02x (%s)",marker,
483 formula_elements[marker].name);
484 len ++;
485
486 if (formula_elements[marker].formula_type == psiconv_formula_unknown) {
487 psiconv_warn(lev+3,off+len,"Unknown formula marker found!");
488 goto ERROR8;
489 } else if ((formula_elements[marker].formula_type ==
490 psiconv_formula_mark_eof) ||
491 (formula_elements[marker].formula_type ==
492 psiconv_formula_mark_opend) ||
493 (formula_elements[marker].formula_type ==
494 psiconv_formula_mark_opsep)) {
495 len--;
496 psiconv_progress(lev+3,off+len,"End of this formula list");
497 eof = 1;
498 } else if (formula_elements[marker].formula_type ==
499 psiconv_formula_dat_int) {
500 psiconv_progress(lev+3,off+len,"Next item: an integer");
501 formula->data.dat_int = psiconv_read_u32(buf,lev+2,off+len,&res);
502 if (res)
503 goto ERROR8;
504 formula->type = formula_elements[marker].formula_type;
505 psiconv_debug(lev+3,off+len,"Value: %08x",formula->data.dat_int);
506 len += 4;
507 if ((res = psiconv_list_add(formula_stack,formula)))
508 goto ERROR8;
509 formula->type = psiconv_formula_unknown;
510 } else if (formula_elements[marker].formula_type ==
511 psiconv_formula_dat_float) {
512 psiconv_progress(lev+3,off+len,"Next item: a float");
513 formula->data.dat_float = psiconv_read_float(buf,lev+2,off+len,&leng,
514 &res);
515 if (res)
516 goto ERROR8;
517 formula->type = formula_elements[marker].formula_type;
518 psiconv_debug(lev+3,off+len,"Value: %f",formula->data.dat_float);
519 len += leng;
520 if ((res = psiconv_list_add(formula_stack,formula)))
521 goto ERROR8;
522 formula->type = psiconv_formula_unknown;
523 } else if (formula_elements[marker].formula_type ==
524 psiconv_formula_dat_cellref) {
525 psiconv_progress(lev+3,off+len,"Next item: a cell reference");
526 if ((res = psiconv_parse_sheet_cell_reference(buf,lev+2,off+len,&leng,
527 &formula->data.dat_cellref)))
528 goto ERROR8;
529 formula->type = formula_elements[marker].formula_type;
530 len += leng;
531 if ((res = psiconv_list_add(formula_stack,formula)))
532 goto ERROR8;
533 formula->type = psiconv_formula_unknown;
534 } else if ((formula_elements[marker].formula_type ==
535 psiconv_formula_dat_cellblock) ||
536 (formula_elements[marker].formula_type ==
537 psiconv_formula_dat_vcellblock)) {
538 psiconv_progress(lev+3,off+len,"Next item: a cell block");
539 if ((res = psiconv_parse_sheet_cell_block(buf,lev+2,off+len,&leng,
540 &formula->data.dat_cellblock)))
541 goto ERROR8;
542 formula->type = formula_elements[marker].formula_type;
543 len += leng;
544 if ((res = psiconv_list_add(formula_stack,formula)))
545 goto ERROR8;
546 formula->type = psiconv_formula_unknown;
547 } else if (formula_elements[marker].formula_type ==
548 psiconv_formula_dat_string) {
549 psiconv_progress(lev+3,off+len,"Next item: a string");
550 formula->data.dat_string =
551 psiconv_read_sheet_string(buf,lev+2,off+len,&leng,&res);
552 if (res)
553 goto ERROR8;
554 formula->type = formula_elements[marker].formula_type;
555 len += leng;
556 if ((res = psiconv_list_add(formula_stack,formula)))
557 goto ERROR8;
558 formula->type = psiconv_formula_unknown;
559 } else if ((formula_elements[marker].formula_type ==
560 psiconv_formula_dat_var) ||
561 (formula_elements[marker].formula_type ==
562 psiconv_formula_dat_vcellblock)) {
563 psiconv_warn(lev+3,off+len,"Not yet supported formula mark!");
564 goto ERROR8;
565 } else if (formula_elements[marker].number_of_args == -1) {
566 psiconv_progress(lev+3,off+len,"Going to parse a vararg function");
567 if (!(formula->data.fun_operands =
568 psiconv_list_new(sizeof(*formula))))
569 goto ERROR8;
570 formula->type = formula_elements[marker].formula_type;
571 nr_of_subs = 0;
572 do {
573 nr_of_subs ++;
574 psiconv_progress(lev+4,off+len,"Going to read vararg argument %d",
575 nr_of_subs);
576 if ((res = psiconv_parse_formula_element_list(buf,lev+4,off+len,&leng,
577 &subformula,maxlen)))
578 goto ERROR8;
579 len += leng;
580 if ((res = psiconv_list_add(formula->data.fun_operands,subformula))) {
581 psiconv_free_formula(subformula);
582 goto ERROR8;
583 }
584 free(subformula);
585 psiconv_progress(lev+4,off+len,"Going to read the next marker");
586 submarker = psiconv_read_u8(buf,lev+4,off+len,&res);
587 len ++;
588 if (res)
589 goto ERROR8;
590 } while (formula_elements[submarker].formula_type
591 == psiconv_formula_mark_opsep);
592 if (formula_elements[submarker].formula_type
593 != psiconv_formula_mark_opend) {
594 psiconv_warn(lev+3,off+len,"Formula corrupted!");
595 psiconv_debug(lev+3,off+len,"Found unexpected marker %02x",submarker);
596 goto ERROR8;
597 }
598 psiconv_progress(lev+3,off+len,"Going to read the repeated marker %02x",
599 marker);
600 submarker = psiconv_read_u8(buf,lev+3,off+len,&res);
601 if (res)
602 goto ERROR8;
603 if (submarker != marker) {
604 psiconv_warn(lev+3,off+len,"Formula corrupted!");
605 psiconv_debug(lev+3,off+len,"Expected marker %02x, found %02x",
606 marker,submarker);
607 goto ERROR8;
608 }
609 len++;
610 psiconv_progress(lev+3,off+len,
611 "Going to read the number of arguments (%d expected)",
612 nr_of_subs);
613 temp = psiconv_read_u16(buf,lev+3,off+len,&res);
614 if (res)
615 goto ERROR8;
616 if (temp != nr_of_subs) {
617 psiconv_warn(lev+3,off+len,"Formula corrupted!");
618 psiconv_debug(lev+3,off+len,
619 "Read %d arguments, but formula says there are %d",
620 nr_of_subs,temp);
621 goto ERROR8;
622 }
623 len += 2;
624 if ((res = psiconv_list_add(formula_stack,formula)))
625 goto ERROR8;
626 formula->type = psiconv_formula_unknown;
627 } else {
628 if (formula_elements[marker].number_of_args > 0)
629 if ((res = psiconv_list_pop(formula_stack,subformula1)))
630 goto ERROR8;
631 if (formula_elements[marker].number_of_args > 1)
632 if ((res = psiconv_list_pop(formula_stack,subformula2)))
633 goto ERROR8;
634 if (formula_elements[marker].number_of_args > 2)
635 if ((res = psiconv_list_pop(formula_stack,subformula3)))
636 goto ERROR8;
637 if (formula_elements[marker].number_of_args > 3)
638 if ((res = psiconv_list_pop(formula_stack,subformula4)))
639 goto ERROR8;
640 if (!(formula->data.fun_operands =
641 psiconv_list_new(sizeof(*formula))))
642 goto ERROR8;
643 formula->type = formula_elements[marker].formula_type;
644 if (formula_elements[marker].number_of_args > 3)
645 if ((res = psiconv_list_add(formula->data.fun_operands,subformula4)))
646 goto ERROR8;
647 if (formula_elements[marker].number_of_args > 2)
648 if ((res = psiconv_list_add(formula->data.fun_operands,subformula3)))
649 goto ERROR8;
650 if (formula_elements[marker].number_of_args > 1)
651 if ((res = psiconv_list_add(formula->data.fun_operands,subformula2)))
652 goto ERROR8;
653 if (formula_elements[marker].number_of_args > 0)
654 if ((res = psiconv_list_add(formula->data.fun_operands,subformula1)))
655 goto ERROR8;
656 if ((res = psiconv_list_add(formula_stack,formula)))
657 goto ERROR8;
658 subformula4->type = subformula3->type = subformula2->type =
659 subformula1->type = formula->type = psiconv_formula_unknown;
660 }
661 }
662 if ((len+off > maxlen) || !eof) {
663 psiconv_warn(lev+2,off+len,"Formula corrupted!");
664 psiconv_debug(lev+2,off+len,"Expected end: %04x, found end: %04x",
665 maxlen,len+off);
666 goto ERROR8;
667 }
668 if ((psiconv_list_length(formula_stack)) != 1) {
669 psiconv_warn(lev+2,off+len,"Formula corrupted!");
670 psiconv_debug(lev+2,off+len,"More than one item left on the stack (%d)",
671 psiconv_list_length(formula_stack));
672 goto ERROR8;
673 }
674 if ((res = psiconv_list_pop(formula_stack,*result)))
675 goto ERROR8;
676 psiconv_list_free(formula_stack);
677 free(formula);
678
679 if (length)
680 *length = len;
681
682 psiconv_progress(lev,off+len-1,
683 "End of formula element list (total length: %08x)", len);
684 return 0;
685
686 ERROR8:
687 psiconv_free_formula(subformula4);
688 ERROR7:
689 psiconv_free_formula(subformula3);
690 ERROR6:
691 psiconv_free_formula(subformula2);
692 ERROR5:
693 psiconv_free_formula(subformula1);
694 ERROR4:
695 psiconv_free_formula(formula);
696 ERROR3:
697 psiconv_free_formula_list(formula_stack);
698 ERROR2:
699 free (*result);
700 ERROR1:
701 psiconv_warn(lev+1,off,"Reading of formula element list failed");
702 if (length)
703 *length = 0;
704 if (!res)
705 return -PSICONV_E_NOMEM;
706 else
707 return res;
708 }
709
710
711
712
713 int psiconv_parse_formula(const psiconv_buffer buf, int lev,
714 psiconv_u32 off, int *length,
715 psiconv_formula *result)
716 {
717 int res=0;
718 int len=0;
719 int leng;
720 psiconv_u32 bytelen,formula_end;
721 psiconv_u8 temp;
722
723 psiconv_progress(lev+1,off,"Going to read a formula");
724
725 psiconv_progress(lev+2,off+len,
726 "Going to read the formula byte length");
727 bytelen = psiconv_read_S(buf,lev+2,off+len,&leng,&res);
728 if (res)
729 goto ERROR1;
730 psiconv_debug(lev+2,off+len,"Formula byte length: %d",bytelen);
731 len += leng;
732 bytelen += len;
733 formula_end = off + bytelen;
734
735 psiconv_progress(lev+2,off+len,"Going to read the formula elements list");
736 if ((res = psiconv_parse_formula_element_list(buf,lev+2,off+len,&leng,
737 result,formula_end)))
738 goto ERROR1;
739 len += leng;
740
741 psiconv_progress(lev+2,off+len,"Going to read the eof marker");
742 temp = psiconv_read_u8(buf,lev+2,off+len,&res);
743 if (res)
744 goto ERROR2;
745 if (formula_elements[temp].formula_type != psiconv_formula_mark_eof) {
746 psiconv_warn(lev+2,off+len,"Formula corrupted!");
747 psiconv_debug(lev+2,off+len,"Expected marker: %02x, found byte: %02x",
748 0x15,temp);
749 goto ERROR2;
750 }
751 len ++;
752
753 if (off+len != formula_end) {
754 psiconv_warn(lev+2,off+len,"Formula corrupted!");
755 psiconv_debug(lev+2,off+len,"Expected end: %04x, found end: %04x",
756 formula_end,len+off);
757 goto ERROR2;
758 }
759
760 if (length)
761 *length = len;
762
763 psiconv_progress(lev,off+len-1,
764 "End of formula (total length: %08x)", len);
765 return 0;
766
767 ERROR2:
768 psiconv_free_formula(*result);
769 ERROR1:
770 psiconv_warn(lev+1,off,"Reading of formula failed");
771 if (length)
772 *length = 0;
773 if (!res)
774 return -PSICONV_E_NOMEM;
775 else
776 return res;
777 }
778
779

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