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 |
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|
|
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 |
|
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 |
|
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GNU General Public License for more details. |
14 |
|
|
|
15 |
|
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You should have received a copy of the GNU General Public License |
16 |
|
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along with this program; if not, write to the Free Software |
17 |
|
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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 |
64 |
psiconv_u8 psiconv_read_u8(const psiconv_buffer buf,int lev,psiconv_u32 off, |
30 |
|
|
int *status) |
31 |
frodo |
2 |
{ |
32 |
|
|
psiconv_u8 *ptr; |
33 |
frodo |
79 |
ptr = psiconv_buffer_get(buf,off); |
34 |
frodo |
64 |
if (!ptr) { |
35 |
|
|
psiconv_warn(lev,off,"Trying byte read past the end of the file"); |
36 |
|
|
if (status) |
37 |
|
|
*status = -PSICONV_E_PARSE; |
38 |
|
|
return 0; |
39 |
|
|
} |
40 |
|
|
if (status) |
41 |
|
|
*status = 0; |
42 |
frodo |
2 |
return *ptr; |
43 |
|
|
} |
44 |
|
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|
45 |
frodo |
64 |
psiconv_u16 psiconv_read_u16(const psiconv_buffer buf,int lev,psiconv_u32 off, |
46 |
|
|
int *status) |
47 |
frodo |
2 |
{ |
48 |
|
|
psiconv_u8 *ptr0,*ptr1; |
49 |
frodo |
79 |
ptr0 = psiconv_buffer_get(buf,off); |
50 |
|
|
ptr1 = psiconv_buffer_get(buf,off+1); |
51 |
frodo |
64 |
if (!ptr0 || !ptr1) { |
52 |
|
|
psiconv_warn(lev,off,"Trying word read past the end of the file"); |
53 |
|
|
if (status) |
54 |
|
|
*status = -PSICONV_E_PARSE; |
55 |
|
|
return 0; |
56 |
|
|
} |
57 |
|
|
if (status) |
58 |
|
|
*status = 0; |
59 |
frodo |
2 |
return *ptr0 + (*ptr1 << 8); |
60 |
|
|
} |
61 |
|
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|
62 |
frodo |
64 |
psiconv_u32 psiconv_read_u32(const psiconv_buffer buf,int lev,psiconv_u32 off, |
63 |
|
|
int *status) |
64 |
frodo |
2 |
{ |
65 |
|
|
psiconv_u8 *ptr0,*ptr1,*ptr2,*ptr3; |
66 |
frodo |
79 |
ptr0 = psiconv_buffer_get(buf,off); |
67 |
|
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ptr1 = psiconv_buffer_get(buf,off+1); |
68 |
|
|
ptr2 = psiconv_buffer_get(buf,off+2); |
69 |
|
|
ptr3 = psiconv_buffer_get(buf,off+3); |
70 |
frodo |
64 |
if (!ptr0 || !ptr1 || !ptr2 || !ptr3) { |
71 |
|
|
psiconv_warn(lev,off,"Trying long read past the end of the file"); |
72 |
|
|
if (status) |
73 |
|
|
*status = -PSICONV_E_PARSE; |
74 |
|
|
return 0; |
75 |
|
|
} |
76 |
|
|
if (status) |
77 |
|
|
*status = 0; |
78 |
frodo |
2 |
return *ptr0 + (*ptr1 << 8) + (*ptr2 << 16) + (*ptr3 << 24); |
79 |
|
|
} |
80 |
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|
81 |
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psiconv_S_t psiconv_read_S(const psiconv_buffer buf, int lev, psiconv_u32 off, |
82 |
frodo |
64 |
int *length,int *status) |
83 |
frodo |
2 |
{ |
84 |
|
|
psiconv_u8 temp; |
85 |
|
|
psiconv_S_t res; |
86 |
frodo |
64 |
int len,localstatus; |
87 |
frodo |
2 |
|
88 |
|
|
psiconv_progress(lev+1,off,"Going to read a S length indicator"); |
89 |
frodo |
64 |
temp = psiconv_read_u8(buf,lev+2,off,&localstatus); |
90 |
|
|
if (localstatus) |
91 |
|
|
goto ERROR; |
92 |
frodo |
2 |
if ((temp & 0x03) == 0x02) { |
93 |
frodo |
64 |
res = psiconv_read_u8(buf,lev+2,off,&localstatus) >> 2; |
94 |
|
|
if (localstatus) |
95 |
|
|
goto ERROR; |
96 |
frodo |
2 |
len = 1; |
97 |
|
|
psiconv_debug(lev+2,off,"Indicator (1 byte): %02x",res); |
98 |
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|
} else if ((temp & 0x07) == 0x03) { |
99 |
frodo |
64 |
res = psiconv_read_u16(buf,lev+2,off,&localstatus) >> 3; |
100 |
|
|
if (localstatus) |
101 |
|
|
goto ERROR; |
102 |
frodo |
2 |
len = 2; |
103 |
|
|
psiconv_debug(lev+2,off,"Indicator (2 bytes): %04x",res); |
104 |
|
|
} else { |
105 |
|
|
psiconv_warn(lev+2,off,"S indicator: unknown encoding!"); |
106 |
|
|
psiconv_debug(lev+2,off,"Raw data first byte: %02x",temp); |
107 |
frodo |
64 |
goto ERROR; |
108 |
frodo |
2 |
} |
109 |
|
|
|
110 |
|
|
if (length) |
111 |
|
|
*length = len; |
112 |
frodo |
64 |
if (status) |
113 |
|
|
*status = 0; |
114 |
frodo |
2 |
|
115 |
|
|
psiconv_progress(lev+1,off+len-1, |
116 |
|
|
"End of S length indicator (total length: %08x)", len); |
117 |
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|
|
118 |
|
|
return res; |
119 |
frodo |
64 |
|
120 |
|
|
ERROR: |
121 |
|
|
psiconv_warn(lev+1,off,"Reading of S indicator failed"); |
122 |
|
|
if (status) |
123 |
|
|
*status = localstatus; |
124 |
|
|
if (length) |
125 |
|
|
*length = 0; |
126 |
|
|
return 0; |
127 |
frodo |
2 |
} |
128 |
|
|
|
129 |
|
|
psiconv_X_t psiconv_read_X(const psiconv_buffer buf, int lev, psiconv_u32 off, |
130 |
frodo |
64 |
int *length, int *status) |
131 |
frodo |
2 |
{ |
132 |
|
|
psiconv_u8 temp; |
133 |
|
|
psiconv_X_t res; |
134 |
frodo |
64 |
int len,localstatus; |
135 |
frodo |
2 |
|
136 |
|
|
psiconv_progress(lev+1,off,"Going to read a X length indicator"); |
137 |
frodo |
64 |
temp = psiconv_read_u8(buf,lev+2,off,&localstatus); |
138 |
|
|
if (localstatus) |
139 |
|
|
goto ERROR; |
140 |
frodo |
2 |
if ((temp & 0x01) == 0x00) { |
141 |
frodo |
64 |
res = psiconv_read_u8(buf,lev+2,off,&localstatus) >> 1; |
142 |
|
|
if (localstatus) |
143 |
|
|
goto ERROR; |
144 |
frodo |
2 |
len = 1; |
145 |
|
|
psiconv_debug(lev+2,off,"Indicator (1 byte): %02x",res); |
146 |
|
|
} else if ((temp & 0x03) == 0x01) { |
147 |
frodo |
64 |
res = psiconv_read_u16(buf,lev+2,off,&localstatus) >> 2; |
148 |
|
|
if (localstatus) |
149 |
|
|
goto ERROR; |
150 |
frodo |
2 |
len = 2; |
151 |
|
|
psiconv_debug(lev+2,off,"Indicator (2 bytes): %04x",res); |
152 |
|
|
} else if ((temp & 0x07) == 0x03) { |
153 |
frodo |
64 |
res = psiconv_read_u32(buf,lev+2,off,&localstatus) >> 3; |
154 |
|
|
if (localstatus) |
155 |
|
|
goto ERROR; |
156 |
frodo |
2 |
len = 4; |
157 |
|
|
psiconv_debug(lev+2,off,"Indicator (4 bytes): %08x",res); |
158 |
|
|
} else { |
159 |
|
|
psiconv_warn(lev+2,off,"X indicator: unknown encoding!"); |
160 |
|
|
psiconv_debug(lev+2,off,"Raw data first byte: %02x",temp); |
161 |
frodo |
64 |
goto ERROR; |
162 |
frodo |
2 |
} |
163 |
|
|
|
164 |
|
|
if (length) |
165 |
|
|
*length = len; |
166 |
frodo |
64 |
if (status) |
167 |
|
|
*status = 0; |
168 |
frodo |
2 |
|
169 |
|
|
psiconv_progress(lev+1,off+len-1, |
170 |
|
|
"End of X length indicator (total length: %08x)", len); |
171 |
|
|
|
172 |
|
|
return res; |
173 |
frodo |
64 |
|
174 |
|
|
ERROR: |
175 |
|
|
psiconv_warn(lev+1,off,"Reading of X indicator failed"); |
176 |
|
|
if (status) |
177 |
|
|
*status = localstatus; |
178 |
|
|
if (length) |
179 |
|
|
*length = 0; |
180 |
|
|
return 0; |
181 |
frodo |
2 |
} |
182 |
|
|
|
183 |
|
|
psiconv_length_t psiconv_read_length(const psiconv_buffer buf, int lev, |
184 |
frodo |
64 |
psiconv_u32 off, int *length, int *status) |
185 |
frodo |
2 |
{ |
186 |
|
|
psiconv_length_t res; |
187 |
frodo |
64 |
int localstatus; |
188 |
|
|
|
189 |
|
|
res = (2.54/1440.0) * ((psiconv_s32) psiconv_read_u32(buf,lev,off, |
190 |
|
|
&localstatus)); |
191 |
|
|
if (localstatus) { |
192 |
|
|
psiconv_warn(lev+1,off,"Reading of length failed"); |
193 |
|
|
if (length) |
194 |
|
|
*length = 0; |
195 |
|
|
if (status) |
196 |
|
|
*status = localstatus; |
197 |
|
|
return 0; |
198 |
|
|
} |
199 |
frodo |
2 |
psiconv_debug(lev+1,off,"Length: %f",res); |
200 |
|
|
if (length) |
201 |
|
|
*length = 4; |
202 |
frodo |
64 |
if (status) |
203 |
|
|
*status = 0; |
204 |
frodo |
2 |
return res; |
205 |
|
|
} |
206 |
|
|
|
207 |
|
|
psiconv_size_t psiconv_read_size(const psiconv_buffer buf, int lev, |
208 |
frodo |
64 |
psiconv_u32 off, int *length, int *status) |
209 |
frodo |
2 |
{ |
210 |
|
|
psiconv_size_t res; |
211 |
frodo |
64 |
int localstatus; |
212 |
|
|
res = ((psiconv_s32) psiconv_read_u32(buf,lev,off,&localstatus)) / 20.0; |
213 |
|
|
if (localstatus) { |
214 |
|
|
psiconv_warn(lev+1,off,"Reading of size failed"); |
215 |
|
|
if (length) |
216 |
|
|
*length = 0; |
217 |
|
|
if (status) |
218 |
|
|
*status = localstatus; |
219 |
|
|
return 0; |
220 |
|
|
} |
221 |
frodo |
2 |
psiconv_debug(lev+1,off,"Size: %f",res); |
222 |
frodo |
64 |
if (status) |
223 |
|
|
*status = 0; |
224 |
frodo |
2 |
if (length) |
225 |
|
|
*length = 4; |
226 |
|
|
return res; |
227 |
|
|
} |
228 |
|
|
|
229 |
|
|
int psiconv_parse_bool(const psiconv_buffer buf, int lev, psiconv_u32 off, |
230 |
|
|
int *length, psiconv_bool_t *result) |
231 |
|
|
{ |
232 |
|
|
psiconv_u8 temp; |
233 |
frodo |
64 |
int localstatus; |
234 |
|
|
temp = psiconv_read_u8(buf,lev,off,&localstatus); |
235 |
|
|
if (localstatus) { |
236 |
|
|
psiconv_warn(lev+1,off,"Reading of bool failed"); |
237 |
|
|
if (length) |
238 |
|
|
*length = 0; |
239 |
|
|
return localstatus; |
240 |
|
|
} |
241 |
frodo |
2 |
if (length) |
242 |
|
|
*length = 1; |
243 |
|
|
if (temp == 0) { |
244 |
|
|
*result = psiconv_bool_false; |
245 |
|
|
return 0; |
246 |
|
|
} else if (temp == 1) { |
247 |
|
|
*result = psiconv_bool_true; |
248 |
|
|
return 0; |
249 |
|
|
} |
250 |
|
|
psiconv_warn(lev+1,off,"Unknown value for boolean"); |
251 |
|
|
psiconv_debug(lev+1,off,"Boolean value: %02x",temp); |
252 |
|
|
*result = psiconv_bool_true; |
253 |
frodo |
64 |
return 0; |
254 |
frodo |
2 |
} |
255 |
|
|
|
256 |
|
|
psiconv_string_t psiconv_read_string(const psiconv_buffer buf,int lev, |
257 |
frodo |
64 |
psiconv_u32 off,int *length, int *status) |
258 |
frodo |
2 |
{ |
259 |
frodo |
64 |
int stringlen,i,leng,len,localstatus; |
260 |
frodo |
2 |
psiconv_string_t result; |
261 |
|
|
char *res_copy; |
262 |
|
|
|
263 |
|
|
psiconv_progress(lev+1,off,"Going to read a string"); |
264 |
|
|
|
265 |
frodo |
64 |
stringlen = psiconv_read_S(buf,lev+2,off,&leng,&localstatus); |
266 |
|
|
if (localstatus) |
267 |
|
|
goto ERROR1; |
268 |
frodo |
2 |
psiconv_debug(lev+2,off,"Length: %i",stringlen); |
269 |
|
|
len = leng; |
270 |
|
|
|
271 |
|
|
result = malloc(stringlen + 1); |
272 |
frodo |
64 |
if (!result) |
273 |
|
|
goto ERROR1; |
274 |
|
|
for (i = 0; (i < stringlen) && !localstatus; i++) |
275 |
|
|
result[i] = psiconv_read_u8(buf,lev,off+i+len,&localstatus); |
276 |
|
|
if (localstatus) |
277 |
|
|
goto ERROR2; |
278 |
frodo |
2 |
result[stringlen] = 0; |
279 |
|
|
len += stringlen; |
280 |
|
|
|
281 |
|
|
res_copy = psiconv_make_printable(result); |
282 |
frodo |
64 |
if (!res_copy) |
283 |
|
|
goto ERROR2; |
284 |
frodo |
2 |
psiconv_debug(lev+2,off,"Contents: `%s'",res_copy); |
285 |
|
|
free(res_copy); |
286 |
|
|
|
287 |
|
|
if (length) |
288 |
|
|
*length = len; |
289 |
|
|
|
290 |
frodo |
64 |
if (status) |
291 |
|
|
*status = 0; |
292 |
|
|
|
293 |
frodo |
2 |
psiconv_progress(lev+1,off+len-1,"End of string (total length: %08x)",len); |
294 |
|
|
|
295 |
|
|
return result; |
296 |
frodo |
64 |
|
297 |
|
|
ERROR2: |
298 |
|
|
free(result); |
299 |
|
|
ERROR1: |
300 |
|
|
psiconv_warn(lev+1,off,"Reading of string failed"); |
301 |
|
|
if (status) |
302 |
|
|
*status = localstatus; |
303 |
|
|
if (length) |
304 |
|
|
*length = 0; |
305 |
|
|
return NULL; |
306 |
frodo |
2 |
} |
307 |
frodo |
101 |
|
308 |
frodo |
110 |
psiconv_string_t psiconv_read_short_string(const psiconv_buffer buf, |
309 |
|
|
int lev, |
310 |
|
|
psiconv_u32 off,int *length, int *status) |
311 |
|
|
{ |
312 |
|
|
int stringlen,i,len,localstatus; |
313 |
|
|
psiconv_string_t result; |
314 |
|
|
char *res_copy; |
315 |
|
|
|
316 |
|
|
psiconv_progress(lev+1,off,"Going to read a short string"); |
317 |
|
|
|
318 |
|
|
stringlen = psiconv_read_u8(buf,lev+2,off,&localstatus); |
319 |
|
|
if (localstatus) |
320 |
|
|
goto ERROR1; |
321 |
|
|
psiconv_debug(lev+2,off,"Length: %i",stringlen); |
322 |
|
|
len = 1; |
323 |
|
|
|
324 |
|
|
result = malloc(stringlen + 1); |
325 |
|
|
if (!result) |
326 |
|
|
goto ERROR1; |
327 |
|
|
for (i = 0; (i < stringlen) && !localstatus; i++) |
328 |
|
|
result[i] = psiconv_read_u8(buf,lev,off+i+len,&localstatus); |
329 |
|
|
if (localstatus) |
330 |
|
|
goto ERROR2; |
331 |
|
|
result[stringlen] = 0; |
332 |
|
|
len += stringlen; |
333 |
|
|
|
334 |
|
|
res_copy = psiconv_make_printable(result); |
335 |
|
|
if (!res_copy) |
336 |
|
|
goto ERROR2; |
337 |
|
|
psiconv_debug(lev+2,off,"Contents: `%s'",res_copy); |
338 |
|
|
free(res_copy); |
339 |
|
|
|
340 |
|
|
if (length) |
341 |
|
|
*length = len; |
342 |
|
|
|
343 |
|
|
if (status) |
344 |
|
|
*status = 0; |
345 |
|
|
|
346 |
|
|
psiconv_progress(lev+1,off+len-1,"End of short string (total length: %08x)", |
347 |
|
|
len); |
348 |
|
|
|
349 |
|
|
return result; |
350 |
|
|
|
351 |
|
|
|
352 |
|
|
ERROR2: |
353 |
|
|
free(result); |
354 |
|
|
ERROR1: |
355 |
|
|
psiconv_warn(lev+1,off,"Reading of short string failed"); |
356 |
|
|
if (status) |
357 |
|
|
*status = localstatus; |
358 |
|
|
if (length) |
359 |
|
|
*length = 0; |
360 |
|
|
return NULL; |
361 |
|
|
} |
362 |
|
|
|
363 |
frodo |
101 |
psiconv_float_t psiconv_read_float(const psiconv_buffer buf, int lev, |
364 |
|
|
psiconv_u32 off, int *length, int *status) |
365 |
|
|
{ |
366 |
|
|
psiconv_float_t result,bitvalue; |
367 |
|
|
int res,bit; |
368 |
|
|
psiconv_u32 temp=0; |
369 |
|
|
|
370 |
|
|
psiconv_progress(lev+1,off,"Going to read a float"); |
371 |
|
|
|
372 |
|
|
bitvalue = 0.5; |
373 |
|
|
result = 1.0; |
374 |
|
|
for (bit = 0x33; bit > 0; bit--) { |
375 |
|
|
if ((bit == 0x33) || ((bit & 0x07) == 0x07)) |
376 |
|
|
temp = psiconv_read_u8(buf,lev+2,off+ (bit >> 3),&res); |
377 |
|
|
if (res) |
378 |
|
|
goto ERROR; |
379 |
|
|
if (temp & (0x01 << (bit & 0x07))) |
380 |
|
|
result += bitvalue; |
381 |
|
|
bitvalue /= 2.0; |
382 |
|
|
} |
383 |
|
|
temp = psiconv_read_u16(buf,lev+2,off+6,&res); |
384 |
|
|
if (res) |
385 |
|
|
goto ERROR; |
386 |
|
|
if (temp & 0x8000) |
387 |
|
|
result = -result; |
388 |
|
|
temp = (temp & 0x7ff0) >> 4; |
389 |
|
|
result *= pow(2.0,((int) temp)-0x3ff); |
390 |
|
|
psiconv_debug(lev+1,off,"Float value: %f",result); |
391 |
|
|
if (length) |
392 |
|
|
*length = 8; |
393 |
|
|
if (*status) |
394 |
|
|
*status = res; |
395 |
|
|
return result; |
396 |
|
|
ERROR: |
397 |
|
|
psiconv_warn(lev+1,off,"Reading of float failed"); |
398 |
|
|
if (length) |
399 |
|
|
*length = 0; |
400 |
|
|
if (*status) |
401 |
|
|
*status = res; |
402 |
|
|
return 0.0; |
403 |
|
|
} |