/[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 105 - (show annotations)
Fri Feb 2 21:07:11 2001 UTC (19 years, 5 months ago) by frodo
File MIME type: text/plain
File size: 27452 byte(s)
(Frodo) Preparations for vararg functions

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_unknown,0,"*UNKNOWN*"},
52 {psiconv_formula_unknown,0,"*UNKNOWN*"},
53 {psiconv_formula_unknown,0,"*UNKNOWN*"}, /* 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 {psiconv_formula_unknown,0,"*UNKNOWN*"},
291 {psiconv_formula_unknown,0,"*UNKNOWN*"},
292 {psiconv_formula_unknown,0,"*UNKNOWN*"}};
293
294 static psiconv_string_t psiconv_read_sheet_string(const psiconv_buffer buf,
295 int lev,
296 psiconv_u32 off,int *length, int *status)
297 {
298 int stringlen,i,len,localstatus;
299 psiconv_string_t result;
300 char *res_copy;
301
302 psiconv_progress(lev+1,off,"Going to read a sheet string");
303
304 stringlen = psiconv_read_u8(buf,lev+2,off,&localstatus);
305 if (localstatus)
306 goto ERROR1;
307 psiconv_debug(lev+2,off,"Length: %i",stringlen);
308 len = 1;
309
310 result = malloc(stringlen + 1);
311 if (!result)
312 goto ERROR1;
313 for (i = 0; (i < stringlen) && !localstatus; i++)
314 result[i] = psiconv_read_u8(buf,lev,off+i+len,&localstatus);
315 if (localstatus)
316 goto ERROR2;
317 result[stringlen] = 0;
318 len += stringlen;
319
320 res_copy = psiconv_make_printable(result);
321 if (!res_copy)
322 goto ERROR2;
323 psiconv_debug(lev+2,off,"Contents: `%s'",res_copy);
324 free(res_copy);
325
326 if (length)
327 *length = len;
328
329 if (status)
330 *status = 0;
331
332 psiconv_progress(lev+1,off+len-1,"End of sheet string (total length: %08x)",
333 len);
334
335 return result;
336
337
338 ERROR2:
339 free(result);
340 ERROR1:
341 psiconv_warn(lev+1,off,"Reading of sheet string failed");
342 if (status)
343 *status = localstatus;
344 if (length)
345 *length = 0;
346 return NULL;
347 }
348
349
350 static int psiconv_parse_sheet_ref(const psiconv_buffer buf,int lev,
351 psiconv_u32 off, int *length,
352 psiconv_sheet_ref_t *result)
353 {
354 int res;
355 psiconv_u16 temp;
356
357 psiconv_progress(lev+1,off,"Going to read a sheet ref");
358 psiconv_progress(lev+2,off,"Going to read the offset encoding");
359 temp = psiconv_read_u16(buf,lev+2,off,&res);
360 if (res) {
361 if (length)
362 *length = 0;
363 return res;
364 }
365 psiconv_debug(lev+2,off,"Encoded word: %04x",temp);
366 result->absolute = (temp & 0x4000)?psiconv_bool_true:psiconv_bool_false;
367 result->offset = (temp & 0x3fff) * ((temp & 0x8000)?-1:1);
368 psiconv_debug(lev+2,off,"Reference: %s offset %d",
369 result->absolute?"absolute":"relative",result->offset);
370 if (length)
371 *length = 2;
372 return 0;
373 }
374
375 static int psiconv_parse_sheet_cell_reference(const psiconv_buffer buf,int lev,
376 psiconv_u32 off, int *length,
377 psiconv_sheet_cell_reference_t *result)
378 {
379 int len = 0;
380 int leng,res;
381 psiconv_u8 temp;
382
383 psiconv_progress(lev+1,off+len,"Going to read a sheet cell reference");
384 psiconv_progress(lev+2,off+len,"Going to read the row reference");
385 if ((res = psiconv_parse_sheet_ref(buf,lev+2,off+len,&leng,&result->row)))
386 goto ERROR;
387 len += leng;
388 psiconv_progress(lev+2,off+len,"Going to read the column reference");
389 if ((res = psiconv_parse_sheet_ref(buf,lev+2,off+len,&leng,&result->column)))
390 goto ERROR;
391 len += leng;
392
393 psiconv_progress(lev+2,off+len,
394 "Going to read the trailing byte (%02x expected)",0);
395 temp = psiconv_read_u8(buf,lev+2,off+len,&res);
396 if (res)
397 goto ERROR;
398 if (temp != 0) {
399 psiconv_warn(lev+2,off+len,"Unknown byte in cell reference (ignored");
400 psiconv_debug(lev+2,off+len,"Trailing byte: %02x",temp);
401 }
402 len ++;
403 psiconv_progress(lev,off+len-1,
404 "End of cell reference (total length: %08x)", len);
405 if (length)
406 *length = len;
407 return 0;
408 ERROR:
409 if (length)
410 *length = 0;
411 return res;
412 }
413
414 static int psiconv_parse_sheet_cell_block(const psiconv_buffer buf,int lev,
415 psiconv_u32 off, int *length,
416 psiconv_sheet_cell_block_t *result)
417 {
418 int len = 0;
419 int leng,res;
420
421 psiconv_progress(lev+1,off+len,"Going to read a sheet cell block");
422 psiconv_progress(lev+2,off+len,"Going to read the first cell");
423 if ((res = psiconv_parse_sheet_cell_reference(buf,lev+2,off+len,&leng,
424 &result->first)))
425 goto ERROR;
426 len += leng;
427 psiconv_progress(lev+2,off+len,"Going to read the last cell");
428 if ((res = psiconv_parse_sheet_cell_reference(buf,lev+2,off+len,&leng,
429 &result->last)))
430 goto ERROR;
431 len += leng;
432 psiconv_progress(lev,off+len-1,
433 "End of cell block (total length: %08x)", len);
434 if (length)
435 *length = len;
436 return 0;
437 ERROR:
438 if (length)
439 *length = 0;
440 return res;
441 }
442
443 static int psiconv_parse_formula_element_list(const psiconv_buffer buf, int lev,
444 psiconv_u32 off, int *length,
445 psiconv_formula *result,
446 psiconv_u32 maxlen)
447 {
448 int res=0;
449 int len=0;
450 int leng;
451 int eof = 0;
452 psiconv_u8 marker;
453 psiconv_formula_list formula_stack;
454 psiconv_formula formula,subformula1,subformula2,subformula3,subformula4;
455
456 psiconv_progress(lev+1,off,"Going to read a formula element list");
457 if (!(*result = malloc(sizeof(**result))))
458 goto ERROR1;
459 if (!(formula_stack = psiconv_list_new(sizeof(struct psiconv_formula_s))))
460 goto ERROR2;
461 if (!(formula = malloc(sizeof(*formula))))
462 goto ERROR3;
463 /* By setting the type to unknown, we can safely call psiconv_free_formula */
464 formula->type = psiconv_formula_unknown;
465 if (!(subformula1 = malloc(sizeof(*subformula1))))
466 goto ERROR4;
467 subformula1->type = psiconv_formula_unknown;
468 if (!(subformula2 = malloc(sizeof(*subformula2))))
469 goto ERROR5;
470 subformula2->type = psiconv_formula_unknown;
471 if (!(subformula3 = malloc(sizeof(*subformula3))))
472 goto ERROR6;
473 subformula3->type = psiconv_formula_unknown;
474 if (!(subformula4 = malloc(sizeof(*subformula4))))
475 goto ERROR7;
476 subformula4->type = psiconv_formula_unknown;
477
478 while (!eof && len+off < maxlen) {
479 psiconv_progress(lev+3,off+len,"Going to read a formula item marker");
480 marker = psiconv_read_u8(buf,lev+2,off+len,&res);
481 if (res)
482 goto ERROR8;
483 psiconv_debug(lev+3,off+len,"Marker: %02x (%s)",marker,
484 formula_elements[marker].name);
485 len ++;
486
487 if (formula_elements[marker].formula_type == psiconv_formula_unknown) {
488 psiconv_warn(lev+3,off+len,"Unknown formula marker found!");
489 goto ERROR8;
490 } else if ((formula_elements[marker].formula_type ==
491 psiconv_formula_mark_eof) ||
492 (formula_elements[marker].formula_type ==
493 psiconv_formula_mark_opend) ||
494 (formula_elements[marker].formula_type ==
495 psiconv_formula_mark_opsep)) {
496 len--;
497 psiconv_progress(lev+3,off+len,"End of this formula list");
498 eof = 1;
499 } else if (formula_elements[marker].formula_type ==
500 psiconv_formula_dat_int) {
501 psiconv_progress(lev+3,off+len,"Next item: an integer");
502 formula->data.dat_int = psiconv_read_u32(buf,lev+2,off+len,&res);
503 if (res)
504 goto ERROR8;
505 formula->type = formula_elements[marker].formula_type;
506 psiconv_debug(lev+3,off+len,"Value: %08x",formula->data.dat_int);
507 len += 4;
508 if ((res = psiconv_list_add(formula_stack,formula)))
509 goto ERROR8;
510 formula->type = psiconv_formula_unknown;
511 } else if (formula_elements[marker].formula_type ==
512 psiconv_formula_dat_float) {
513 psiconv_progress(lev+3,off+len,"Next item: a float");
514 formula->data.dat_float = psiconv_read_float(buf,lev+2,off+len,&leng,
515 &res);
516 if (res)
517 goto ERROR8;
518 formula->type = formula_elements[marker].formula_type;
519 psiconv_debug(lev+3,off+len,"Value: %f",formula->data.dat_float);
520 len += leng;
521 if ((res = psiconv_list_add(formula_stack,formula)))
522 goto ERROR8;
523 formula->type = psiconv_formula_unknown;
524 } else if (formula_elements[marker].formula_type ==
525 psiconv_formula_dat_cellref) {
526 psiconv_progress(lev+3,off+len,"Next item: a cell reference");
527 if ((res = psiconv_parse_sheet_cell_reference(buf,lev+2,off+len,&leng,
528 &formula->data.dat_cellref)))
529 goto ERROR8;
530 formula->type = formula_elements[marker].formula_type;
531 len += leng;
532 if ((res = psiconv_list_add(formula_stack,formula)))
533 goto ERROR8;
534 formula->type = psiconv_formula_unknown;
535 } else if (formula_elements[marker].formula_type ==
536 psiconv_formula_dat_cellblock) {
537 psiconv_progress(lev+3,off+len,"Next item: a cell block");
538 if ((res = psiconv_parse_sheet_cell_block(buf,lev+2,off+len,&leng,
539 &formula->data.dat_cellblock)))
540 goto ERROR8;
541 formula->type = formula_elements[marker].formula_type;
542 len += leng;
543 if ((res = psiconv_list_add(formula_stack,formula)))
544 goto ERROR8;
545 formula->type = psiconv_formula_unknown;
546 } else if (formula_elements[marker].formula_type ==
547 psiconv_formula_dat_string) {
548 psiconv_progress(lev+3,off+len,"Next item: a string");
549 formula->data.dat_string =
550 psiconv_read_sheet_string(buf,lev+2,off+len,&leng,&res);
551 if (res)
552 goto ERROR8;
553 formula->type = formula_elements[marker].formula_type;
554 len += leng;
555 if ((res = psiconv_list_add(formula_stack,formula)))
556 goto ERROR8;
557 formula->type = psiconv_formula_unknown;
558 } else if ((formula_elements[marker].formula_type ==
559 psiconv_formula_dat_var) ||
560 (formula_elements[marker].formula_type ==
561 psiconv_formula_dat_vcellblock)) {
562 psiconv_warn(lev+3,off+len,"Not yet supported formula mark!");
563 goto ERROR8;
564 } else if (formula_elements[marker].number_of_args == -1) {
565 psiconv_warn(lev+3,off+len,"Vararg functions not yet supported!");
566 goto ERROR8;
567 } else {
568 if (formula_elements[marker].number_of_args > 0)
569 if ((res = psiconv_list_pop(formula_stack,subformula1)))
570 goto ERROR8;
571 if (formula_elements[marker].number_of_args > 1)
572 if ((res = psiconv_list_pop(formula_stack,subformula2)))
573 goto ERROR8;
574 if (formula_elements[marker].number_of_args > 2)
575 if ((res = psiconv_list_pop(formula_stack,subformula3)))
576 goto ERROR8;
577 if (formula_elements[marker].number_of_args > 3)
578 if ((res = psiconv_list_pop(formula_stack,subformula4)))
579 goto ERROR8;
580 if (!(formula->data.fun_operands =
581 psiconv_list_new(sizeof(*formula))))
582 goto ERROR8;
583 formula->type = formula_elements[marker].formula_type;
584 if (formula_elements[marker].number_of_args > 3)
585 if ((res = psiconv_list_add(formula->data.fun_operands,subformula4)))
586 goto ERROR8;
587 if (formula_elements[marker].number_of_args > 2)
588 if ((res = psiconv_list_add(formula->data.fun_operands,subformula3)))
589 goto ERROR8;
590 if (formula_elements[marker].number_of_args > 1)
591 if ((res = psiconv_list_add(formula->data.fun_operands,subformula2)))
592 goto ERROR8;
593 if (formula_elements[marker].number_of_args > 0)
594 if ((res = psiconv_list_add(formula->data.fun_operands,subformula1)))
595 goto ERROR8;
596 if ((res = psiconv_list_add(formula_stack,formula)))
597 goto ERROR8;
598 subformula4->type = subformula3->type = subformula2->type =
599 subformula1->type = formula->type = psiconv_formula_unknown;
600 }
601 }
602 if ((len+off > maxlen) || !eof) {
603 psiconv_warn(lev+2,off+len,"Formula corrupted!");
604 psiconv_debug(lev+2,off+len,"Expected end: %04x, found end: %04x",
605 maxlen,len+off);
606 goto ERROR8;
607 }
608 if ((psiconv_list_length(formula_stack)) != 1) {
609 psiconv_warn(lev+2,off+len,"Formula corrupted!");
610 psiconv_debug(lev+2,off+len,"More than one item left on the stack (%d)",
611 psiconv_list_length(formula_stack));
612 goto ERROR8;
613 }
614 if ((res = psiconv_list_pop(formula_stack,*result)))
615 goto ERROR8;
616 psiconv_list_free(formula_stack);
617 free(formula);
618
619 if (length)
620 *length = len;
621
622 psiconv_progress(lev,off+len-1,
623 "End of formula element list (total length: %08x)", len);
624 return 0;
625
626 ERROR8:
627 psiconv_free_formula(subformula4);
628 ERROR7:
629 psiconv_free_formula(subformula3);
630 ERROR6:
631 psiconv_free_formula(subformula2);
632 ERROR5:
633 psiconv_free_formula(subformula1);
634 ERROR4:
635 psiconv_free_formula(formula);
636 ERROR3:
637 psiconv_free_formula_list(formula_stack);
638 ERROR2:
639 free (*result);
640 ERROR1:
641 psiconv_warn(lev+1,off,"Reading of formula element list failed");
642 if (length)
643 *length = 0;
644 if (!res)
645 return -PSICONV_E_NOMEM;
646 else
647 return res;
648 }
649
650
651
652
653 int psiconv_parse_formula(const psiconv_buffer buf, int lev,
654 psiconv_u32 off, int *length,
655 psiconv_formula *result)
656 {
657 int res=0;
658 int len=0;
659 int leng;
660 psiconv_u32 bytelen,formula_end;
661 psiconv_u8 temp;
662
663 psiconv_progress(lev+1,off,"Going to read a formula");
664
665 psiconv_progress(lev+2,off+len,
666 "Going to read the formula byte length");
667 bytelen = psiconv_read_S(buf,lev+2,off+len,&leng,&res);
668 if (res)
669 goto ERROR1;
670 psiconv_debug(lev+2,off+len,"Formula byte length: %d",bytelen);
671 len += leng;
672 bytelen += len;
673 formula_end = off + bytelen;
674
675 psiconv_progress(lev+2,off+len,"Going to read the formula elements list");
676 if ((res = psiconv_parse_formula_element_list(buf,lev+2,off+len,&leng,
677 result,formula_end)))
678 goto ERROR1;
679 len += leng;
680
681 psiconv_progress(lev+2,off+len,"Going to read the eof marker");
682 temp = psiconv_read_u8(buf,lev+2,off+len,&res);
683 if (res)
684 goto ERROR2;
685 if (formula_elements[temp].formula_type != psiconv_formula_mark_eof) {
686 psiconv_warn(lev+2,off+len,"Formula corrupted!");
687 psiconv_debug(lev+2,off+len,"Expected marker: %02x, found byte: %02x",
688 0x15,temp);
689 goto ERROR2;
690 }
691 len ++;
692
693 if (off+len != formula_end) {
694 psiconv_warn(lev+2,off+len,"Formula corrupted!");
695 psiconv_debug(lev+2,off+len,"Expected end: %04x, found end: %04x",
696 formula_end,len+off);
697 goto ERROR2;
698 }
699
700 if (length)
701 *length = len;
702
703 psiconv_progress(lev,off+len-1,
704 "End of formula (total length: %08x)", len);
705 return 0;
706
707 ERROR2:
708 psiconv_free_formula(*result);
709 ERROR1:
710 psiconv_warn(lev+1,off,"Reading of formula failed");
711 if (length)
712 *length = 0;
713 if (!res)
714 return -PSICONV_E_NOMEM;
715 else
716 return res;
717 }
718
719

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