1 |
frodo |
2 |
/* |
2 |
|
|
parse_simple.c - Part of psiconv, a PSION 5 file formats converter |
3 |
frodo |
63 |
Copyright (c) 1999, 2000 Frodo Looijaard <frodol@dds.nl> |
4 |
frodo |
2 |
|
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 |
|
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the Free Software Foundation; either version 2 of the License, or |
8 |
|
|
(at your option) any later version. |
9 |
|
|
|
10 |
|
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This program is distributed in the hope that it will be useful, |
11 |
|
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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 |
|
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|
20 |
|
|
#include "config.h" |
21 |
frodo |
71 |
#include "compat.h" |
22 |
|
|
|
23 |
frodo |
2 |
#include <stdlib.h> |
24 |
frodo |
101 |
#include <math.h> |
25 |
frodo |
2 |
|
26 |
|
|
#include "parse_routines.h" |
27 |
frodo |
71 |
#include "error.h" |
28 |
frodo |
2 |
|
29 |
frodo |
118 |
/* Very inefficient, but good enough for now. By implementing it ourselves, |
30 |
|
|
we do not have to link with -lm */ |
31 |
|
|
psiconv_float_t pow2(int n) |
32 |
|
|
{ |
33 |
|
|
psiconv_float_t res=1.0; |
34 |
|
|
int i; |
35 |
|
|
|
36 |
|
|
for (i = 0; i < (n<0?-n:n); i++) |
37 |
|
|
res *= 2.0; |
38 |
|
|
|
39 |
|
|
return n<0?1/res:res; |
40 |
|
|
} |
41 |
frodo |
64 |
psiconv_u8 psiconv_read_u8(const psiconv_buffer buf,int lev,psiconv_u32 off, |
42 |
|
|
int *status) |
43 |
frodo |
2 |
{ |
44 |
|
|
psiconv_u8 *ptr; |
45 |
frodo |
79 |
ptr = psiconv_buffer_get(buf,off); |
46 |
frodo |
64 |
if (!ptr) { |
47 |
|
|
psiconv_warn(lev,off,"Trying byte read past the end of the file"); |
48 |
|
|
if (status) |
49 |
|
|
*status = -PSICONV_E_PARSE; |
50 |
|
|
return 0; |
51 |
|
|
} |
52 |
|
|
if (status) |
53 |
|
|
*status = 0; |
54 |
frodo |
2 |
return *ptr; |
55 |
|
|
} |
56 |
|
|
|
57 |
frodo |
64 |
psiconv_u16 psiconv_read_u16(const psiconv_buffer buf,int lev,psiconv_u32 off, |
58 |
|
|
int *status) |
59 |
frodo |
2 |
{ |
60 |
|
|
psiconv_u8 *ptr0,*ptr1; |
61 |
frodo |
79 |
ptr0 = psiconv_buffer_get(buf,off); |
62 |
|
|
ptr1 = psiconv_buffer_get(buf,off+1); |
63 |
frodo |
64 |
if (!ptr0 || !ptr1) { |
64 |
|
|
psiconv_warn(lev,off,"Trying word read past the end of the file"); |
65 |
|
|
if (status) |
66 |
|
|
*status = -PSICONV_E_PARSE; |
67 |
|
|
return 0; |
68 |
|
|
} |
69 |
|
|
if (status) |
70 |
|
|
*status = 0; |
71 |
frodo |
2 |
return *ptr0 + (*ptr1 << 8); |
72 |
|
|
} |
73 |
|
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|
74 |
frodo |
64 |
psiconv_u32 psiconv_read_u32(const psiconv_buffer buf,int lev,psiconv_u32 off, |
75 |
|
|
int *status) |
76 |
frodo |
2 |
{ |
77 |
|
|
psiconv_u8 *ptr0,*ptr1,*ptr2,*ptr3; |
78 |
frodo |
79 |
ptr0 = psiconv_buffer_get(buf,off); |
79 |
|
|
ptr1 = psiconv_buffer_get(buf,off+1); |
80 |
|
|
ptr2 = psiconv_buffer_get(buf,off+2); |
81 |
|
|
ptr3 = psiconv_buffer_get(buf,off+3); |
82 |
frodo |
64 |
if (!ptr0 || !ptr1 || !ptr2 || !ptr3) { |
83 |
|
|
psiconv_warn(lev,off,"Trying long read past the end of the file"); |
84 |
|
|
if (status) |
85 |
|
|
*status = -PSICONV_E_PARSE; |
86 |
|
|
return 0; |
87 |
|
|
} |
88 |
|
|
if (status) |
89 |
|
|
*status = 0; |
90 |
frodo |
2 |
return *ptr0 + (*ptr1 << 8) + (*ptr2 << 16) + (*ptr3 << 24); |
91 |
|
|
} |
92 |
|
|
|
93 |
|
|
psiconv_S_t psiconv_read_S(const psiconv_buffer buf, int lev, psiconv_u32 off, |
94 |
frodo |
64 |
int *length,int *status) |
95 |
frodo |
2 |
{ |
96 |
|
|
psiconv_u8 temp; |
97 |
|
|
psiconv_S_t res; |
98 |
frodo |
64 |
int len,localstatus; |
99 |
frodo |
2 |
|
100 |
|
|
psiconv_progress(lev+1,off,"Going to read a S length indicator"); |
101 |
frodo |
64 |
temp = psiconv_read_u8(buf,lev+2,off,&localstatus); |
102 |
|
|
if (localstatus) |
103 |
|
|
goto ERROR; |
104 |
frodo |
2 |
if ((temp & 0x03) == 0x02) { |
105 |
frodo |
64 |
res = psiconv_read_u8(buf,lev+2,off,&localstatus) >> 2; |
106 |
|
|
if (localstatus) |
107 |
|
|
goto ERROR; |
108 |
frodo |
2 |
len = 1; |
109 |
|
|
psiconv_debug(lev+2,off,"Indicator (1 byte): %02x",res); |
110 |
|
|
} else if ((temp & 0x07) == 0x03) { |
111 |
frodo |
64 |
res = psiconv_read_u16(buf,lev+2,off,&localstatus) >> 3; |
112 |
|
|
if (localstatus) |
113 |
|
|
goto ERROR; |
114 |
frodo |
2 |
len = 2; |
115 |
|
|
psiconv_debug(lev+2,off,"Indicator (2 bytes): %04x",res); |
116 |
|
|
} else { |
117 |
|
|
psiconv_warn(lev+2,off,"S indicator: unknown encoding!"); |
118 |
|
|
psiconv_debug(lev+2,off,"Raw data first byte: %02x",temp); |
119 |
frodo |
64 |
goto ERROR; |
120 |
frodo |
2 |
} |
121 |
|
|
|
122 |
|
|
if (length) |
123 |
|
|
*length = len; |
124 |
frodo |
64 |
if (status) |
125 |
|
|
*status = 0; |
126 |
frodo |
2 |
|
127 |
|
|
psiconv_progress(lev+1,off+len-1, |
128 |
|
|
"End of S length indicator (total length: %08x)", len); |
129 |
|
|
|
130 |
|
|
return res; |
131 |
frodo |
64 |
|
132 |
|
|
ERROR: |
133 |
|
|
psiconv_warn(lev+1,off,"Reading of S indicator failed"); |
134 |
|
|
if (status) |
135 |
|
|
*status = localstatus; |
136 |
|
|
if (length) |
137 |
|
|
*length = 0; |
138 |
|
|
return 0; |
139 |
frodo |
2 |
} |
140 |
|
|
|
141 |
|
|
psiconv_X_t psiconv_read_X(const psiconv_buffer buf, int lev, psiconv_u32 off, |
142 |
frodo |
64 |
int *length, int *status) |
143 |
frodo |
2 |
{ |
144 |
|
|
psiconv_u8 temp; |
145 |
|
|
psiconv_X_t res; |
146 |
frodo |
64 |
int len,localstatus; |
147 |
frodo |
2 |
|
148 |
|
|
psiconv_progress(lev+1,off,"Going to read a X length indicator"); |
149 |
frodo |
64 |
temp = psiconv_read_u8(buf,lev+2,off,&localstatus); |
150 |
|
|
if (localstatus) |
151 |
|
|
goto ERROR; |
152 |
frodo |
2 |
if ((temp & 0x01) == 0x00) { |
153 |
frodo |
64 |
res = psiconv_read_u8(buf,lev+2,off,&localstatus) >> 1; |
154 |
|
|
if (localstatus) |
155 |
|
|
goto ERROR; |
156 |
frodo |
2 |
len = 1; |
157 |
|
|
psiconv_debug(lev+2,off,"Indicator (1 byte): %02x",res); |
158 |
|
|
} else if ((temp & 0x03) == 0x01) { |
159 |
frodo |
64 |
res = psiconv_read_u16(buf,lev+2,off,&localstatus) >> 2; |
160 |
|
|
if (localstatus) |
161 |
|
|
goto ERROR; |
162 |
frodo |
2 |
len = 2; |
163 |
|
|
psiconv_debug(lev+2,off,"Indicator (2 bytes): %04x",res); |
164 |
|
|
} else if ((temp & 0x07) == 0x03) { |
165 |
frodo |
64 |
res = psiconv_read_u32(buf,lev+2,off,&localstatus) >> 3; |
166 |
|
|
if (localstatus) |
167 |
|
|
goto ERROR; |
168 |
frodo |
2 |
len = 4; |
169 |
|
|
psiconv_debug(lev+2,off,"Indicator (4 bytes): %08x",res); |
170 |
|
|
} else { |
171 |
|
|
psiconv_warn(lev+2,off,"X indicator: unknown encoding!"); |
172 |
|
|
psiconv_debug(lev+2,off,"Raw data first byte: %02x",temp); |
173 |
frodo |
64 |
goto ERROR; |
174 |
frodo |
2 |
} |
175 |
|
|
|
176 |
|
|
if (length) |
177 |
|
|
*length = len; |
178 |
frodo |
64 |
if (status) |
179 |
|
|
*status = 0; |
180 |
frodo |
2 |
|
181 |
|
|
psiconv_progress(lev+1,off+len-1, |
182 |
|
|
"End of X length indicator (total length: %08x)", len); |
183 |
|
|
|
184 |
|
|
return res; |
185 |
frodo |
64 |
|
186 |
|
|
ERROR: |
187 |
|
|
psiconv_warn(lev+1,off,"Reading of X indicator failed"); |
188 |
|
|
if (status) |
189 |
|
|
*status = localstatus; |
190 |
|
|
if (length) |
191 |
|
|
*length = 0; |
192 |
|
|
return 0; |
193 |
frodo |
2 |
} |
194 |
|
|
|
195 |
|
|
psiconv_length_t psiconv_read_length(const psiconv_buffer buf, int lev, |
196 |
frodo |
64 |
psiconv_u32 off, int *length, int *status) |
197 |
frodo |
2 |
{ |
198 |
|
|
psiconv_length_t res; |
199 |
frodo |
64 |
int localstatus; |
200 |
|
|
|
201 |
|
|
res = (2.54/1440.0) * ((psiconv_s32) psiconv_read_u32(buf,lev,off, |
202 |
|
|
&localstatus)); |
203 |
|
|
if (localstatus) { |
204 |
|
|
psiconv_warn(lev+1,off,"Reading of length failed"); |
205 |
|
|
if (length) |
206 |
|
|
*length = 0; |
207 |
|
|
if (status) |
208 |
|
|
*status = localstatus; |
209 |
|
|
return 0; |
210 |
|
|
} |
211 |
frodo |
2 |
psiconv_debug(lev+1,off,"Length: %f",res); |
212 |
|
|
if (length) |
213 |
|
|
*length = 4; |
214 |
frodo |
64 |
if (status) |
215 |
|
|
*status = 0; |
216 |
frodo |
2 |
return res; |
217 |
|
|
} |
218 |
|
|
|
219 |
|
|
psiconv_size_t psiconv_read_size(const psiconv_buffer buf, int lev, |
220 |
frodo |
64 |
psiconv_u32 off, int *length, int *status) |
221 |
frodo |
2 |
{ |
222 |
|
|
psiconv_size_t res; |
223 |
frodo |
64 |
int localstatus; |
224 |
|
|
res = ((psiconv_s32) psiconv_read_u32(buf,lev,off,&localstatus)) / 20.0; |
225 |
|
|
if (localstatus) { |
226 |
|
|
psiconv_warn(lev+1,off,"Reading of size failed"); |
227 |
|
|
if (length) |
228 |
|
|
*length = 0; |
229 |
|
|
if (status) |
230 |
|
|
*status = localstatus; |
231 |
|
|
return 0; |
232 |
|
|
} |
233 |
frodo |
2 |
psiconv_debug(lev+1,off,"Size: %f",res); |
234 |
frodo |
64 |
if (status) |
235 |
|
|
*status = 0; |
236 |
frodo |
2 |
if (length) |
237 |
|
|
*length = 4; |
238 |
|
|
return res; |
239 |
|
|
} |
240 |
|
|
|
241 |
|
|
int psiconv_parse_bool(const psiconv_buffer buf, int lev, psiconv_u32 off, |
242 |
|
|
int *length, psiconv_bool_t *result) |
243 |
|
|
{ |
244 |
|
|
psiconv_u8 temp; |
245 |
frodo |
64 |
int localstatus; |
246 |
|
|
temp = psiconv_read_u8(buf,lev,off,&localstatus); |
247 |
|
|
if (localstatus) { |
248 |
|
|
psiconv_warn(lev+1,off,"Reading of bool failed"); |
249 |
|
|
if (length) |
250 |
|
|
*length = 0; |
251 |
|
|
return localstatus; |
252 |
|
|
} |
253 |
frodo |
2 |
if (length) |
254 |
|
|
*length = 1; |
255 |
|
|
if (temp == 0) { |
256 |
|
|
*result = psiconv_bool_false; |
257 |
|
|
return 0; |
258 |
|
|
} else if (temp == 1) { |
259 |
|
|
*result = psiconv_bool_true; |
260 |
|
|
return 0; |
261 |
|
|
} |
262 |
|
|
psiconv_warn(lev+1,off,"Unknown value for boolean"); |
263 |
|
|
psiconv_debug(lev+1,off,"Boolean value: %02x",temp); |
264 |
|
|
*result = psiconv_bool_true; |
265 |
frodo |
64 |
return 0; |
266 |
frodo |
2 |
} |
267 |
|
|
|
268 |
|
|
psiconv_string_t psiconv_read_string(const psiconv_buffer buf,int lev, |
269 |
frodo |
64 |
psiconv_u32 off,int *length, int *status) |
270 |
frodo |
2 |
{ |
271 |
frodo |
64 |
int stringlen,i,leng,len,localstatus; |
272 |
frodo |
2 |
psiconv_string_t result; |
273 |
|
|
char *res_copy; |
274 |
|
|
|
275 |
|
|
psiconv_progress(lev+1,off,"Going to read a string"); |
276 |
|
|
|
277 |
frodo |
64 |
stringlen = psiconv_read_S(buf,lev+2,off,&leng,&localstatus); |
278 |
|
|
if (localstatus) |
279 |
|
|
goto ERROR1; |
280 |
frodo |
2 |
psiconv_debug(lev+2,off,"Length: %i",stringlen); |
281 |
|
|
len = leng; |
282 |
|
|
|
283 |
|
|
result = malloc(stringlen + 1); |
284 |
frodo |
64 |
if (!result) |
285 |
|
|
goto ERROR1; |
286 |
|
|
for (i = 0; (i < stringlen) && !localstatus; i++) |
287 |
|
|
result[i] = psiconv_read_u8(buf,lev,off+i+len,&localstatus); |
288 |
|
|
if (localstatus) |
289 |
|
|
goto ERROR2; |
290 |
frodo |
2 |
result[stringlen] = 0; |
291 |
|
|
len += stringlen; |
292 |
|
|
|
293 |
|
|
res_copy = psiconv_make_printable(result); |
294 |
frodo |
64 |
if (!res_copy) |
295 |
|
|
goto ERROR2; |
296 |
frodo |
2 |
psiconv_debug(lev+2,off,"Contents: `%s'",res_copy); |
297 |
|
|
free(res_copy); |
298 |
|
|
|
299 |
|
|
if (length) |
300 |
|
|
*length = len; |
301 |
|
|
|
302 |
frodo |
64 |
if (status) |
303 |
|
|
*status = 0; |
304 |
|
|
|
305 |
frodo |
2 |
psiconv_progress(lev+1,off+len-1,"End of string (total length: %08x)",len); |
306 |
|
|
|
307 |
|
|
return result; |
308 |
frodo |
64 |
|
309 |
|
|
ERROR2: |
310 |
|
|
free(result); |
311 |
|
|
ERROR1: |
312 |
|
|
psiconv_warn(lev+1,off,"Reading of string failed"); |
313 |
|
|
if (status) |
314 |
|
|
*status = localstatus; |
315 |
|
|
if (length) |
316 |
|
|
*length = 0; |
317 |
|
|
return NULL; |
318 |
frodo |
2 |
} |
319 |
frodo |
101 |
|
320 |
frodo |
110 |
psiconv_string_t psiconv_read_short_string(const psiconv_buffer buf, |
321 |
|
|
int lev, |
322 |
|
|
psiconv_u32 off,int *length, int *status) |
323 |
|
|
{ |
324 |
|
|
int stringlen,i,len,localstatus; |
325 |
|
|
psiconv_string_t result; |
326 |
|
|
char *res_copy; |
327 |
|
|
|
328 |
|
|
psiconv_progress(lev+1,off,"Going to read a short string"); |
329 |
|
|
|
330 |
|
|
stringlen = psiconv_read_u8(buf,lev+2,off,&localstatus); |
331 |
|
|
if (localstatus) |
332 |
|
|
goto ERROR1; |
333 |
|
|
psiconv_debug(lev+2,off,"Length: %i",stringlen); |
334 |
|
|
len = 1; |
335 |
|
|
|
336 |
|
|
result = malloc(stringlen + 1); |
337 |
|
|
if (!result) |
338 |
|
|
goto ERROR1; |
339 |
|
|
for (i = 0; (i < stringlen) && !localstatus; i++) |
340 |
|
|
result[i] = psiconv_read_u8(buf,lev,off+i+len,&localstatus); |
341 |
|
|
if (localstatus) |
342 |
|
|
goto ERROR2; |
343 |
|
|
result[stringlen] = 0; |
344 |
|
|
len += stringlen; |
345 |
|
|
|
346 |
|
|
res_copy = psiconv_make_printable(result); |
347 |
|
|
if (!res_copy) |
348 |
|
|
goto ERROR2; |
349 |
|
|
psiconv_debug(lev+2,off,"Contents: `%s'",res_copy); |
350 |
|
|
free(res_copy); |
351 |
|
|
|
352 |
|
|
if (length) |
353 |
|
|
*length = len; |
354 |
|
|
|
355 |
|
|
if (status) |
356 |
|
|
*status = 0; |
357 |
|
|
|
358 |
|
|
psiconv_progress(lev+1,off+len-1,"End of short string (total length: %08x)", |
359 |
|
|
len); |
360 |
|
|
|
361 |
|
|
return result; |
362 |
|
|
|
363 |
|
|
|
364 |
|
|
ERROR2: |
365 |
|
|
free(result); |
366 |
|
|
ERROR1: |
367 |
|
|
psiconv_warn(lev+1,off,"Reading of short string failed"); |
368 |
|
|
if (status) |
369 |
|
|
*status = localstatus; |
370 |
|
|
if (length) |
371 |
|
|
*length = 0; |
372 |
|
|
return NULL; |
373 |
|
|
} |
374 |
|
|
|
375 |
frodo |
101 |
psiconv_float_t psiconv_read_float(const psiconv_buffer buf, int lev, |
376 |
|
|
psiconv_u32 off, int *length, int *status) |
377 |
|
|
{ |
378 |
|
|
psiconv_float_t result,bitvalue; |
379 |
|
|
int res,bit; |
380 |
|
|
psiconv_u32 temp=0; |
381 |
|
|
|
382 |
|
|
psiconv_progress(lev+1,off,"Going to read a float"); |
383 |
|
|
|
384 |
|
|
bitvalue = 0.5; |
385 |
|
|
result = 1.0; |
386 |
|
|
for (bit = 0x33; bit > 0; bit--) { |
387 |
|
|
if ((bit == 0x33) || ((bit & 0x07) == 0x07)) |
388 |
|
|
temp = psiconv_read_u8(buf,lev+2,off+ (bit >> 3),&res); |
389 |
|
|
if (res) |
390 |
|
|
goto ERROR; |
391 |
|
|
if (temp & (0x01 << (bit & 0x07))) |
392 |
|
|
result += bitvalue; |
393 |
|
|
bitvalue /= 2.0; |
394 |
|
|
} |
395 |
|
|
temp = psiconv_read_u16(buf,lev+2,off+6,&res); |
396 |
|
|
if (res) |
397 |
|
|
goto ERROR; |
398 |
|
|
if (temp & 0x8000) |
399 |
|
|
result = -result; |
400 |
|
|
temp = (temp & 0x7ff0) >> 4; |
401 |
frodo |
118 |
result *= pow2(((int) temp)-0x3ff); |
402 |
frodo |
101 |
psiconv_debug(lev+1,off,"Float value: %f",result); |
403 |
|
|
if (length) |
404 |
|
|
*length = 8; |
405 |
|
|
if (*status) |
406 |
|
|
*status = res; |
407 |
|
|
return result; |
408 |
|
|
ERROR: |
409 |
|
|
psiconv_warn(lev+1,off,"Reading of float failed"); |
410 |
|
|
if (length) |
411 |
|
|
*length = 0; |
412 |
|
|
if (*status) |
413 |
|
|
*status = res; |
414 |
|
|
return 0.0; |
415 |
|
|
} |
416 |
frodo |
118 |
|