/[public]/psiconv/trunk/lib/psiconv/parse_formula.c
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Revision 100 - (hide annotations)
Tue Jan 30 23:15:24 2001 UTC (23 years, 2 months ago) by frodo
File MIME type: text/plain
File size: 19548 byte(s)
(Frodo) Forgot to add parse_formula.c in the previous patch

1 frodo 100 /*
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     (formula_elements[marker].formula_type ==
370     psiconv_formula_dat_var) ||
371     (formula_elements[marker].formula_type ==
372     psiconv_formula_dat_string) ||
373     (formula_elements[marker].formula_type ==
374     psiconv_formula_dat_cellref) ||
375     (formula_elements[marker].formula_type ==
376     psiconv_formula_dat_cellblock) ||
377     (formula_elements[marker].formula_type ==
378     psiconv_formula_dat_vcellblock) ||
379     (formula_elements[marker].formula_type ==
380     psiconv_formula_mark_opsep) ||
381     (formula_elements[marker].formula_type ==
382     psiconv_formula_mark_opend)) {
383     psiconv_warn(lev+3,off+len,"Not yet supported formula mark!");
384     goto ERROR8;
385     } else if (formula_elements[marker].number_of_args == -1) {
386     psiconv_warn(lev+3,off+len,"Vararg functions not yet supported!");
387     goto ERROR8;
388     } else {
389     if (formula_elements[marker].number_of_args > 0)
390     if ((res = psiconv_list_pop(formula_stack,subformula1)))
391     goto ERROR8;
392     if (formula_elements[marker].number_of_args > 1)
393     if ((res = psiconv_list_pop(formula_stack,subformula2)))
394     goto ERROR8;
395     if (formula_elements[marker].number_of_args > 2)
396     if ((res = psiconv_list_pop(formula_stack,subformula3)))
397     goto ERROR8;
398     if (formula_elements[marker].number_of_args > 3)
399     if ((res = psiconv_list_pop(formula_stack,subformula4)))
400     goto ERROR8;
401     if (!(formula->data.fun_operands =
402     psiconv_list_new(sizeof(*formula))))
403     goto ERROR8;
404     formula->type = formula_elements[marker].formula_type;
405     if (formula_elements[marker].number_of_args > 3)
406     if ((res = psiconv_list_add(formula->data.fun_operands,subformula4)))
407     goto ERROR8;
408     if (formula_elements[marker].number_of_args > 2)
409     if ((res = psiconv_list_add(formula->data.fun_operands,subformula3)))
410     goto ERROR8;
411     if (formula_elements[marker].number_of_args > 1)
412     if ((res = psiconv_list_add(formula->data.fun_operands,subformula2)))
413     goto ERROR8;
414     if (formula_elements[marker].number_of_args > 0)
415     if ((res = psiconv_list_add(formula->data.fun_operands,subformula1)))
416     goto ERROR8;
417     if ((res = psiconv_list_add(formula_stack,formula)))
418     goto ERROR8;
419     subformula4->type = subformula3->type = subformula2->type =
420     subformula1->type = formula->type = psiconv_formula_unknown;
421     }
422     }
423     if ((len != bytelen) || !eof) {
424     psiconv_warn(lev+2,off+len,"Formula corrupted!");
425     psiconv_debug(lev+2,off+len,"Expected end: %04x, found end: %04x",
426     bytelen,len);
427     goto ERROR8;
428     }
429     if ((psiconv_list_length(formula_stack)) != 1) {
430     psiconv_warn(lev+2,off+len,"Formula corrupted!");
431     psiconv_debug(lev+2,off+len,"More than one item left on the stack (%d)",
432     psiconv_list_length(formula_stack));
433     goto ERROR8;
434     }
435     if ((res = psiconv_list_pop(formula_stack,*result)))
436     goto ERROR8;
437     psiconv_list_free(formula_stack);
438     free(formula);
439    
440     if (length)
441     *length = len;
442    
443     psiconv_progress(lev,off+len-1,
444     "End of formula (total length: %08x)", len);
445     return 0;
446    
447     ERROR8:
448     psiconv_free_formula(subformula4);
449     ERROR7:
450     psiconv_free_formula(subformula3);
451     ERROR6:
452     psiconv_free_formula(subformula2);
453     ERROR5:
454     psiconv_free_formula(subformula1);
455     ERROR4:
456     psiconv_free_formula(formula);
457     ERROR3:
458     psiconv_free_formula_list(formula_stack);
459     ERROR2:
460     free (*result);
461     ERROR1:
462     psiconv_warn(lev+1,off,"Reading of formula failed");
463     if (length)
464     *length = 0;
465     if (!res)
466     return -PSICONV_E_NOMEM;
467     else
468     return res;
469     }
470    

frodo@frodo.looijaard.name
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