/[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 101 - (show annotations)
Tue Jan 30 23:57:28 2001 UTC (19 years, 5 months ago) by frodo
File MIME type: text/plain
File size: 20058 byte(s)
(Frodo) Added floats

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 int psiconv_parse_formula(const psiconv_buffer buf, int lev,
295 psiconv_u32 off, int *length,
296 psiconv_formula *result)
297 {
298 int res=0;
299 int len=0;
300 int leng;
301 int eof = 0;
302 psiconv_u8 marker;
303 psiconv_u32 bytelen;
304 psiconv_formula_list formula_stack;
305 psiconv_formula formula,subformula1,subformula2,subformula3,subformula4;
306
307 psiconv_progress(lev+1,off,"Going to read a formula");
308 if (!(*result = malloc(sizeof(**result))))
309 goto ERROR1;
310 if (!(formula_stack = psiconv_list_new(sizeof(struct psiconv_formula_s))))
311 goto ERROR2;
312 if (!(formula = malloc(sizeof(*formula))))
313 goto ERROR3;
314 /* By setting the type to unknown, we can safely call psiconv_free_formula */
315 formula->type = psiconv_formula_unknown;
316 if (!(subformula1 = malloc(sizeof(*subformula1))))
317 goto ERROR4;
318 subformula1->type = psiconv_formula_unknown;
319 if (!(subformula2 = malloc(sizeof(*subformula2))))
320 goto ERROR5;
321 subformula2->type = psiconv_formula_unknown;
322 if (!(subformula3 = malloc(sizeof(*subformula3))))
323 goto ERROR6;
324 subformula3->type = psiconv_formula_unknown;
325 if (!(subformula4 = malloc(sizeof(*subformula4))))
326 goto ERROR7;
327 subformula4->type = psiconv_formula_unknown;
328
329 psiconv_progress(lev+2,off+len,
330 "Going to read the formula byte length");
331 bytelen = psiconv_read_S(buf,lev+2,off+len,&leng,&res);
332 if (res)
333 goto ERROR8;
334 psiconv_debug(lev+2,off+len,"Formula byte length: %d",bytelen);
335 len += leng;
336 bytelen += len;
337
338 psiconv_progress(lev+2,off+len,"Going to read the formula items");
339 while (!eof && len < bytelen) {
340 psiconv_progress(lev+3,off+len,"Going to read a formula item marker");
341 marker = psiconv_read_u8(buf,lev+2,off+len,&res);
342 if (res)
343 goto ERROR8;
344 psiconv_debug(lev+3,off+len,"Marker: %02x (%s)",marker,
345 formula_elements[marker].name);
346 len ++;
347
348 if (formula_elements[marker].formula_type == psiconv_formula_unknown) {
349 psiconv_warn(lev+3,off+len,"Unknown formula marker found!");
350 goto ERROR8;
351 } else if (formula_elements[marker].formula_type ==
352 psiconv_formula_mark_eof) {
353 psiconv_progress(lev+3,off+len,"End of formula");
354 eof = 1;
355 } else if (formula_elements[marker].formula_type ==
356 psiconv_formula_dat_int) {
357 psiconv_progress(lev+3,off+len,"Next item: an integer");
358 formula->data.dat_int = psiconv_read_u32(buf,lev+2,off+len,&res);
359 if (res)
360 goto ERROR8;
361 formula->type = formula_elements[marker].formula_type;
362 psiconv_debug(lev+3,off+len,"Value: %08x",formula->data.dat_int);
363 len += 4;
364 if ((res = psiconv_list_add(formula_stack,formula)))
365 goto ERROR8;
366 formula->type = psiconv_formula_unknown;
367 } else if (formula_elements[marker].formula_type ==
368 psiconv_formula_dat_float) {
369 psiconv_progress(lev+3,off+len,"Next item: a float");
370 formula->data.dat_float = psiconv_read_float(buf,lev+2,off+len,&leng,
371 &res);
372 if (res)
373 goto ERROR8;
374 formula->type = formula_elements[marker].formula_type;
375 psiconv_debug(lev+3,off+len,"Value: %f",formula->data.dat_float);
376 len += leng;
377 if ((res = psiconv_list_add(formula_stack,formula)))
378 goto ERROR8;
379 formula->type = psiconv_formula_unknown;
380
381 } else if ((formula_elements[marker].formula_type ==
382 psiconv_formula_dat_var) ||
383 (formula_elements[marker].formula_type ==
384 psiconv_formula_dat_string) ||
385 (formula_elements[marker].formula_type ==
386 psiconv_formula_dat_cellref) ||
387 (formula_elements[marker].formula_type ==
388 psiconv_formula_dat_cellblock) ||
389 (formula_elements[marker].formula_type ==
390 psiconv_formula_dat_vcellblock) ||
391 (formula_elements[marker].formula_type ==
392 psiconv_formula_mark_opsep) ||
393 (formula_elements[marker].formula_type ==
394 psiconv_formula_mark_opend)) {
395 psiconv_warn(lev+3,off+len,"Not yet supported formula mark!");
396 goto ERROR8;
397 } else if (formula_elements[marker].number_of_args == -1) {
398 psiconv_warn(lev+3,off+len,"Vararg functions not yet supported!");
399 goto ERROR8;
400 } else {
401 if (formula_elements[marker].number_of_args > 0)
402 if ((res = psiconv_list_pop(formula_stack,subformula1)))
403 goto ERROR8;
404 if (formula_elements[marker].number_of_args > 1)
405 if ((res = psiconv_list_pop(formula_stack,subformula2)))
406 goto ERROR8;
407 if (formula_elements[marker].number_of_args > 2)
408 if ((res = psiconv_list_pop(formula_stack,subformula3)))
409 goto ERROR8;
410 if (formula_elements[marker].number_of_args > 3)
411 if ((res = psiconv_list_pop(formula_stack,subformula4)))
412 goto ERROR8;
413 if (!(formula->data.fun_operands =
414 psiconv_list_new(sizeof(*formula))))
415 goto ERROR8;
416 formula->type = formula_elements[marker].formula_type;
417 if (formula_elements[marker].number_of_args > 3)
418 if ((res = psiconv_list_add(formula->data.fun_operands,subformula4)))
419 goto ERROR8;
420 if (formula_elements[marker].number_of_args > 2)
421 if ((res = psiconv_list_add(formula->data.fun_operands,subformula3)))
422 goto ERROR8;
423 if (formula_elements[marker].number_of_args > 1)
424 if ((res = psiconv_list_add(formula->data.fun_operands,subformula2)))
425 goto ERROR8;
426 if (formula_elements[marker].number_of_args > 0)
427 if ((res = psiconv_list_add(formula->data.fun_operands,subformula1)))
428 goto ERROR8;
429 if ((res = psiconv_list_add(formula_stack,formula)))
430 goto ERROR8;
431 subformula4->type = subformula3->type = subformula2->type =
432 subformula1->type = formula->type = psiconv_formula_unknown;
433 }
434 }
435 if ((len != bytelen) || !eof) {
436 psiconv_warn(lev+2,off+len,"Formula corrupted!");
437 psiconv_debug(lev+2,off+len,"Expected end: %04x, found end: %04x",
438 bytelen,len);
439 goto ERROR8;
440 }
441 if ((psiconv_list_length(formula_stack)) != 1) {
442 psiconv_warn(lev+2,off+len,"Formula corrupted!");
443 psiconv_debug(lev+2,off+len,"More than one item left on the stack (%d)",
444 psiconv_list_length(formula_stack));
445 goto ERROR8;
446 }
447 if ((res = psiconv_list_pop(formula_stack,*result)))
448 goto ERROR8;
449 psiconv_list_free(formula_stack);
450 free(formula);
451
452 if (length)
453 *length = len;
454
455 psiconv_progress(lev,off+len-1,
456 "End of formula (total length: %08x)", len);
457 return 0;
458
459 ERROR8:
460 psiconv_free_formula(subformula4);
461 ERROR7:
462 psiconv_free_formula(subformula3);
463 ERROR6:
464 psiconv_free_formula(subformula2);
465 ERROR5:
466 psiconv_free_formula(subformula1);
467 ERROR4:
468 psiconv_free_formula(formula);
469 ERROR3:
470 psiconv_free_formula_list(formula_stack);
471 ERROR2:
472 free (*result);
473 ERROR1:
474 psiconv_warn(lev+1,off,"Reading of formula failed");
475 if (length)
476 *length = 0;
477 if (!res)
478 return -PSICONV_E_NOMEM;
479 else
480 return res;
481 }
482

frodo@frodo.looijaard.name
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