/[public]/psiconv/trunk/lib/psiconv/parse_simple.c
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Revision 79 Revision 196
1/* 1/*
2 parse_simple.c - Part of psiconv, a PSION 5 file formats converter 2 parse_simple.c - Part of psiconv, a PSION 5 file formats converter
3 Copyright (c) 1999, 2000 Frodo Looijaard <frodol@dds.nl> 3 Copyright (c) 1999-2004 Frodo Looijaard <frodol@dds.nl>
4 4
5 This program is free software; you can redistribute it and/or modify 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 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 7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version. 8 (at your option) any later version.
… …
19 19
20#include "config.h" 20#include "config.h"
21#include "compat.h" 21#include "compat.h"
22 22
23#include <stdlib.h> 23#include <stdlib.h>
24#include <math.h>
24 25
25#include "parse_routines.h" 26#include "parse_routines.h"
26#include "error.h" 27#include "error.h"
28#include "unicode.h"
27 29
30#ifdef DMALLOC
31#include <dmalloc.h>
32#endif
33
34static psiconv_float_t pow2(int n);
35static psiconv_string_t psiconv_read_string_aux(const psiconv_config config,
36 const psiconv_buffer buf,int lev,
37 psiconv_u32 off,int *length, int *status,
38 int kind);
39
40/* Very inefficient, but good enough for now. By implementing it ourselves,
41 we do not have to link with -lm */
42psiconv_float_t pow2(int n)
43{
44 psiconv_float_t res=1.0;
45 int i;
46
47 for (i = 0; i < (n<0?-n:n); i++)
48 res *= 2.0;
49
50 return n<0?1/res:res;
51}
28psiconv_u8 psiconv_read_u8(const psiconv_buffer buf,int lev,psiconv_u32 off, 52psiconv_u8 psiconv_read_u8(const psiconv_config config,const psiconv_buffer buf,int lev,psiconv_u32 off,
29 int *status) 53 int *status)
30{ 54{
31 psiconv_u8 *ptr; 55 psiconv_u8 *ptr;
32 ptr = psiconv_buffer_get(buf,off); 56 ptr = psiconv_buffer_get(buf,off);
33 if (!ptr) { 57 if (!ptr) {
34 psiconv_warn(lev,off,"Trying byte read past the end of the file"); 58 psiconv_error(config,lev,off,"Trying byte read past the end of the file");
35 if (status) 59 if (status)
36 *status = -PSICONV_E_PARSE; 60 *status = -PSICONV_E_PARSE;
37 return 0; 61 return 0;
38 } 62 }
39 if (status) 63 if (status)
40 *status = 0; 64 *status = 0;
41 return *ptr; 65 return *ptr;
42} 66}
43 67
44psiconv_u16 psiconv_read_u16(const psiconv_buffer buf,int lev,psiconv_u32 off, 68psiconv_u16 psiconv_read_u16(const psiconv_config config,const psiconv_buffer buf,int lev,psiconv_u32 off,
45 int *status) 69 int *status)
46{ 70{
47 psiconv_u8 *ptr0,*ptr1; 71 psiconv_u8 *ptr0,*ptr1;
48 ptr0 = psiconv_buffer_get(buf,off); 72 ptr0 = psiconv_buffer_get(buf,off);
49 ptr1 = psiconv_buffer_get(buf,off+1); 73 ptr1 = psiconv_buffer_get(buf,off+1);
50 if (!ptr0 || !ptr1) { 74 if (!ptr0 || !ptr1) {
51 psiconv_warn(lev,off,"Trying word read past the end of the file"); 75 psiconv_error(config,lev,off,"Trying word read past the end of the file");
52 if (status) 76 if (status)
53 *status = -PSICONV_E_PARSE; 77 *status = -PSICONV_E_PARSE;
54 return 0; 78 return 0;
55 } 79 }
56 if (status) 80 if (status)
57 *status = 0; 81 *status = 0;
58 return *ptr0 + (*ptr1 << 8); 82 return *ptr0 + (*ptr1 << 8);
59} 83}
60 84
61psiconv_u32 psiconv_read_u32(const psiconv_buffer buf,int lev,psiconv_u32 off, 85psiconv_u32 psiconv_read_u32(const psiconv_config config,const psiconv_buffer buf,int lev,psiconv_u32 off,
62 int *status) 86 int *status)
63{ 87{
64 psiconv_u8 *ptr0,*ptr1,*ptr2,*ptr3; 88 psiconv_u8 *ptr0,*ptr1,*ptr2,*ptr3;
65 ptr0 = psiconv_buffer_get(buf,off); 89 ptr0 = psiconv_buffer_get(buf,off);
66 ptr1 = psiconv_buffer_get(buf,off+1); 90 ptr1 = psiconv_buffer_get(buf,off+1);
67 ptr2 = psiconv_buffer_get(buf,off+2); 91 ptr2 = psiconv_buffer_get(buf,off+2);
68 ptr3 = psiconv_buffer_get(buf,off+3); 92 ptr3 = psiconv_buffer_get(buf,off+3);
69 if (!ptr0 || !ptr1 || !ptr2 || !ptr3) { 93 if (!ptr0 || !ptr1 || !ptr2 || !ptr3) {
70 psiconv_warn(lev,off,"Trying long read past the end of the file"); 94 psiconv_error(config,lev,off,"Trying long read past the end of the file");
71 if (status) 95 if (status)
72 *status = -PSICONV_E_PARSE; 96 *status = -PSICONV_E_PARSE;
73 return 0; 97 return 0;
74 } 98 }
75 if (status) 99 if (status)
76 *status = 0; 100 *status = 0;
77 return *ptr0 + (*ptr1 << 8) + (*ptr2 << 16) + (*ptr3 << 24); 101 return *ptr0 + (*ptr1 << 8) + (*ptr2 << 16) + (*ptr3 << 24);
78} 102}
79 103
104psiconv_s32 psiconv_read_sint(const psiconv_config config,const psiconv_buffer buf,int lev,psiconv_u32 off,
105 int *length,int *status)
106{
107 int localstatus;
108 psiconv_u32 temp;
109
110 temp=psiconv_read_u32(config,buf,lev,off,&localstatus);
111 if (status)
112 *status = localstatus;
113 if (length)
114 *length = localstatus?0:4;
115
116 return localstatus?0:(temp & 0x7fffffff)*(temp&0x80000000?-1:1);
117}
118
80psiconv_S_t psiconv_read_S(const psiconv_buffer buf, int lev, psiconv_u32 off, 119psiconv_u32 psiconv_read_S(const psiconv_config config,const psiconv_buffer buf, int lev, psiconv_u32 off,
81 int *length,int *status) 120 int *length,int *status)
82{ 121{
83 psiconv_u8 temp; 122 psiconv_u8 temp;
84 psiconv_S_t res; 123 psiconv_u32 res;
85 int len,localstatus; 124 int len,localstatus;
86 125
87 psiconv_progress(lev+1,off,"Going to read a S length indicator"); 126 psiconv_progress(config,lev+1,off,"Going to read a S length indicator");
88 temp = psiconv_read_u8(buf,lev+2,off,&localstatus); 127 temp = psiconv_read_u8(config,buf,lev+2,off,&localstatus);
89 if (localstatus) 128 if (localstatus)
90 goto ERROR; 129 goto ERROR;
91 if ((temp & 0x03) == 0x02) { 130 if ((temp & 0x03) == 0x02) {
92 res = psiconv_read_u8(buf,lev+2,off,&localstatus) >> 2; 131 res = psiconv_read_u8(config,buf,lev+2,off,&localstatus) >> 2;
93 if (localstatus) 132 if (localstatus)
94 goto ERROR; 133 goto ERROR;
95 len = 1; 134 len = 1;
96 psiconv_debug(lev+2,off,"Indicator (1 byte): %02x",res); 135 psiconv_debug(config,lev+2,off,"Indicator (1 byte): %02x",res);
97 } else if ((temp & 0x07) == 0x03) { 136 } else if ((temp & 0x07) == 0x05) {
98 res = psiconv_read_u16(buf,lev+2,off,&localstatus) >> 3; 137 res = psiconv_read_u16(config,buf,lev+2,off,&localstatus) >> 3;
99 if (localstatus) 138 if (localstatus)
100 goto ERROR; 139 goto ERROR;
101 len = 2; 140 len = 2;
102 psiconv_debug(lev+2,off,"Indicator (2 bytes): %04x",res); 141 psiconv_debug(config,lev+2,off,"Indicator (2 bytes): %04x",res);
103 } else { 142 } else {
104 psiconv_warn(lev+2,off,"S indicator: unknown encoding!"); 143 psiconv_error(config,lev+2,off,"S indicator: unknown encoding!");
105 psiconv_debug(lev+2,off,"Raw data first byte: %02x",temp); 144 psiconv_debug(config,lev+2,off,"Raw data first byte: %02x",temp);
106 goto ERROR; 145 goto ERROR;
107 } 146 }
108 147
109 if (length) 148 if (length)
110 *length = len; 149 *length = len;
111 if (status) 150 if (status)
112 *status = 0; 151 *status = 0;
113 152
114 psiconv_progress(lev+1,off+len-1, 153 psiconv_progress(config,lev+1,off+len-1,
115 "End of S length indicator (total length: %08x)", len); 154 "End of S length indicator (total length: %08x)", len);
116 155
117 return res; 156 return res;
118 157
119ERROR: 158ERROR:
120 psiconv_warn(lev+1,off,"Reading of S indicator failed"); 159 psiconv_error(config,lev+1,off,"Reading of S indicator failed");
121 if (status) 160 if (status)
122 *status = localstatus; 161 *status = localstatus;
123 if (length) 162 if (length)
124 *length = 0; 163 *length = 0;
125 return 0; 164 return 0;
126} 165}
127 166
128psiconv_X_t psiconv_read_X(const psiconv_buffer buf, int lev, psiconv_u32 off, 167psiconv_u32 psiconv_read_X(const psiconv_config config,const psiconv_buffer buf, int lev, psiconv_u32 off,
129 int *length, int *status) 168 int *length, int *status)
130{ 169{
131 psiconv_u8 temp; 170 psiconv_u8 temp;
132 psiconv_X_t res; 171 psiconv_u32 res;
133 int len,localstatus; 172 int len,localstatus;
134 173
135 psiconv_progress(lev+1,off,"Going to read a X length indicator"); 174 psiconv_progress(config,lev+1,off,"Going to read a X length indicator");
136 temp = psiconv_read_u8(buf,lev+2,off,&localstatus); 175 temp = psiconv_read_u8(config,buf,lev+2,off,&localstatus);
137 if (localstatus) 176 if (localstatus)
138 goto ERROR; 177 goto ERROR;
139 if ((temp & 0x01) == 0x00) { 178 if ((temp & 0x01) == 0x00) {
140 res = psiconv_read_u8(buf,lev+2,off,&localstatus) >> 1; 179 res = psiconv_read_u8(config,buf,lev+2,off,&localstatus) >> 1;
141 if (localstatus) 180 if (localstatus)
142 goto ERROR; 181 goto ERROR;
143 len = 1; 182 len = 1;
144 psiconv_debug(lev+2,off,"Indicator (1 byte): %02x",res); 183 psiconv_debug(config,lev+2,off,"Indicator (1 byte): %02x",res);
145 } else if ((temp & 0x03) == 0x01) { 184 } else if ((temp & 0x03) == 0x01) {
146 res = psiconv_read_u16(buf,lev+2,off,&localstatus) >> 2; 185 res = psiconv_read_u16(config,buf,lev+2,off,&localstatus) >> 2;
147 if (localstatus) 186 if (localstatus)
148 goto ERROR; 187 goto ERROR;
149 len = 2; 188 len = 2;
150 psiconv_debug(lev+2,off,"Indicator (2 bytes): %04x",res); 189 psiconv_debug(config,lev+2,off,"Indicator (2 bytes): %04x",res);
151 } else if ((temp & 0x07) == 0x03) { 190 } else if ((temp & 0x07) == 0x03) {
152 res = psiconv_read_u32(buf,lev+2,off,&localstatus) >> 3; 191 res = psiconv_read_u32(config,buf,lev+2,off,&localstatus) >> 3;
153 if (localstatus) 192 if (localstatus)
154 goto ERROR; 193 goto ERROR;
155 len = 4; 194 len = 4;
156 psiconv_debug(lev+2,off,"Indicator (4 bytes): %08x",res); 195 psiconv_debug(config,lev+2,off,"Indicator (4 bytes): %08x",res);
157 } else { 196 } else {
158 psiconv_warn(lev+2,off,"X indicator: unknown encoding!"); 197 psiconv_error(config,lev+2,off,"X indicator: unknown encoding!");
159 psiconv_debug(lev+2,off,"Raw data first byte: %02x",temp); 198 psiconv_debug(config,lev+2,off,"Raw data first byte: %02x",temp);
160 goto ERROR; 199 goto ERROR;
161 } 200 }
162 201
163 if (length) 202 if (length)
164 *length = len; 203 *length = len;
165 if (status) 204 if (status)
166 *status = 0; 205 *status = 0;
167 206
168 psiconv_progress(lev+1,off+len-1, 207 psiconv_progress(config,lev+1,off+len-1,
169 "End of X length indicator (total length: %08x)", len); 208 "End of X length indicator (total length: %08x)", len);
170 209
171 return res; 210 return res;
172 211
173ERROR: 212ERROR:
174 psiconv_warn(lev+1,off,"Reading of X indicator failed"); 213 psiconv_error(config,lev+1,off,"Reading of X indicator failed");
175 if (status) 214 if (status)
176 *status = localstatus; 215 *status = localstatus;
177 if (length) 216 if (length)
178 *length = 0; 217 *length = 0;
179 return 0; 218 return 0;
180} 219}
181 220
182psiconv_length_t psiconv_read_length(const psiconv_buffer buf, int lev, 221psiconv_length_t psiconv_read_length(const psiconv_config config,const psiconv_buffer buf, int lev,
183 psiconv_u32 off, int *length, int *status) 222 psiconv_u32 off, int *length, int *status)
184{ 223{
185 psiconv_length_t res; 224 psiconv_length_t res;
186 int localstatus; 225 int localstatus;
187 226
188 res = (2.54/1440.0) * ((psiconv_s32) psiconv_read_u32(buf,lev,off, 227 res = (2.54/1440.0) * ((psiconv_s32) psiconv_read_u32(config,buf,lev,off,
189 &localstatus)); 228 &localstatus));
190 if (localstatus) { 229 if (localstatus) {
191 psiconv_warn(lev+1,off,"Reading of length failed"); 230 psiconv_error(config,lev+1,off,"Reading of length failed");
192 if (length) 231 if (length)
193 *length = 0; 232 *length = 0;
194 if (status) 233 if (status)
195 *status = localstatus; 234 *status = localstatus;
196 return 0; 235 return 0;
197 } 236 }
198 psiconv_debug(lev+1,off,"Length: %f",res); 237 psiconv_debug(config,lev+1,off,"Length: %f",res);
199 if (length) 238 if (length)
200 *length = 4; 239 *length = 4;
201 if (status) 240 if (status)
202 *status = 0; 241 *status = 0;
203 return res; 242 return res;
204} 243}
205 244
206psiconv_size_t psiconv_read_size(const psiconv_buffer buf, int lev, 245psiconv_size_t psiconv_read_size(const psiconv_config config,const psiconv_buffer buf, int lev,
207 psiconv_u32 off, int *length, int *status) 246 psiconv_u32 off, int *length, int *status)
208{ 247{
209 psiconv_size_t res; 248 psiconv_size_t res;
210 int localstatus; 249 int localstatus;
211 res = ((psiconv_s32) psiconv_read_u32(buf,lev,off,&localstatus)) / 20.0; 250 res = ((psiconv_s32) psiconv_read_u32(config,buf,lev,off,&localstatus)) / 20.0;
212 if (localstatus) { 251 if (localstatus) {
213 psiconv_warn(lev+1,off,"Reading of size failed"); 252 psiconv_error(config,lev+1,off,"Reading of size failed");
214 if (length) 253 if (length)
215 *length = 0; 254 *length = 0;
216 if (status) 255 if (status)
217 *status = localstatus; 256 *status = localstatus;
218 return 0; 257 return 0;
219 } 258 }
220 psiconv_debug(lev+1,off,"Size: %f",res); 259 psiconv_debug(config,lev+1,off,"Size: %f",res);
221 if (status) 260 if (status)
222 *status = 0; 261 *status = 0;
223 if (length) 262 if (length)
224 *length = 4; 263 *length = 4;
225 return res; 264 return res;
226} 265}
227 266
228int psiconv_parse_bool(const psiconv_buffer buf, int lev, psiconv_u32 off, 267int psiconv_parse_bool(const psiconv_config config,const psiconv_buffer buf, int lev, psiconv_u32 off,
229 int *length, psiconv_bool_t *result) 268 int *length, psiconv_bool_t *result)
230{ 269{
231 psiconv_u8 temp; 270 psiconv_u8 temp;
232 int localstatus; 271 int localstatus;
233 temp = psiconv_read_u8(buf,lev,off,&localstatus); 272 temp = psiconv_read_u8(config,buf,lev,off,&localstatus);
234 if (localstatus) { 273 if (localstatus) {
235 psiconv_warn(lev+1,off,"Reading of bool failed"); 274 psiconv_error(config,lev+1,off,"Reading of bool failed");
236 if (length) 275 if (length)
237 *length = 0; 276 *length = 0;
238 return localstatus; 277 return localstatus;
239 } 278 }
240 if (length) 279 if (length)
… …
244 return 0; 283 return 0;
245 } else if (temp == 1) { 284 } else if (temp == 1) {
246 *result = psiconv_bool_true; 285 *result = psiconv_bool_true;
247 return 0; 286 return 0;
248 } 287 }
249 psiconv_warn(lev+1,off,"Unknown value for boolean"); 288 psiconv_warn(config,lev+1,off,"Unknown value for boolean");
250 psiconv_debug(lev+1,off,"Boolean value: %02x",temp); 289 psiconv_debug(config,lev+1,off,"Boolean value: %02x",temp);
251 *result = psiconv_bool_true; 290 *result = psiconv_bool_true;
252 return 0; 291 return 0;
253} 292}
254 293
255psiconv_string_t psiconv_read_string(const psiconv_buffer buf,int lev, 294psiconv_string_t psiconv_read_string(const psiconv_config config,
295 const psiconv_buffer buf,int lev,
256 psiconv_u32 off,int *length, int *status) 296 psiconv_u32 off,int *length, int *status)
297{
298 return psiconv_read_string_aux(config,buf,lev,off,length,status,-1);
299}
300
301psiconv_string_t psiconv_read_short_string(const psiconv_config config,
302 const psiconv_buffer buf,int lev,
303 psiconv_u32 off,int *length, int *status)
304{
305 return psiconv_read_string_aux(config,buf,lev,off,length,status,-2);
306}
307
308psiconv_string_t psiconv_read_charlist(const psiconv_config config,
309 const psiconv_buffer buf, int lev,
310 psiconv_u32 off, int nrofchars,
311 int *status)
312{
313 int length;
314 if (nrofchars <= 0) {
315 psiconv_error(config,lev,off,
316 "psiconv_read_charlist called with non-positive nrofchars");
317 if (status)
318 *status = -PSICONV_E_OTHER;
319 return NULL;
320 }
321 return psiconv_read_string_aux(config,buf,lev,off,&length,status,nrofchars);
322}
323
324
325psiconv_string_t psiconv_read_string_aux(const psiconv_config config,
326 const psiconv_buffer buf,int lev,
327 psiconv_u32 off,int *length, int *status,
328 int kind)
257{ 329{
258 int stringlen,i,leng,len,localstatus; 330 int stringlen,i,leng,len,localstatus;
259 psiconv_string_t result; 331 psiconv_string_t result;
260 char *res_copy; 332 char *res_copy;
333 psiconv_u8 temp;
261 334
262 psiconv_progress(lev+1,off,"Going to read a string"); 335 psiconv_progress(config,lev+1,off,"Going to read a string");
263 336
337 if (kind == -1)
264 stringlen = psiconv_read_S(buf,lev+2,off,&leng,&localstatus); 338 stringlen = psiconv_read_S(config,buf,lev+2,off,&leng,&localstatus);
339 else if (kind == -2) {
340 stringlen = psiconv_read_u8(config,buf,lev+2,off,&localstatus);
341 leng = 1;
342 } else {
343 stringlen = kind;
344 leng = 0;
345 localstatus = 0;
346 }
265 if (localstatus) 347 if (localstatus)
266 goto ERROR1; 348 goto ERROR1;
267 psiconv_debug(lev+2,off,"Length: %i",stringlen); 349 psiconv_debug(config,lev+2,off,"Length: %i",stringlen);
268 len = leng; 350 len = leng;
269 351
270 result = malloc(stringlen + 1); 352 result = malloc(sizeof(*result) * (stringlen + 1));
271 if (!result) 353 if (!result)
272 goto ERROR1; 354 goto ERROR1;
273 for (i = 0; (i < stringlen) && !localstatus; i++) 355 for (i = 0; i < stringlen; i++) {
274 result[i] = psiconv_read_u8(buf,lev,off+i+len,&localstatus); 356 temp = psiconv_read_u8(config,buf,lev,off+i+len,&localstatus);
275 if (localstatus) 357 if (localstatus)
276 goto ERROR2; 358 goto ERROR2;
359 result[i] = psiconv_unicode_from_char(config,temp);
360 }
277 result[stringlen] = 0; 361 result[stringlen] = 0;
278 len += stringlen; 362 len += stringlen;
279 363
280 res_copy = psiconv_make_printable(result); 364 res_copy = psiconv_make_printable(config,result);
281 if (!res_copy) 365 if (!res_copy)
282 goto ERROR2; 366 goto ERROR2;
283 psiconv_debug(lev+2,off,"Contents: `%s'",res_copy); 367 psiconv_debug(config,lev+2,off,"Contents: `%s'",res_copy);
284 free(res_copy); 368 free(res_copy);
285 369
286 if (length) 370 if (length)
287 *length = len; 371 *length = len;
288 372
289 if (status) 373 if (status)
290 *status = 0; 374 *status = 0;
291 375
292 psiconv_progress(lev+1,off+len-1,"End of string (total length: %08x)",len); 376 psiconv_progress(config,lev+1,off+len-1,"End of string (total length: %08x)",len);
293 377
294 return result; 378 return result;
295 379
296ERROR2: 380ERROR2:
297 free(result); 381 free(result);
298ERROR1: 382ERROR1:
299 psiconv_warn(lev+1,off,"Reading of string failed"); 383 psiconv_error(config,lev+1,off,"Reading of string failed");
300 if (status) 384 if (status)
301 *status = localstatus; 385 *status = localstatus;
302 if (length) 386 if (length)
303 *length = 0; 387 *length = 0;
304 return NULL; 388 return NULL;
305} 389}
390
391psiconv_float_t psiconv_read_float(const psiconv_config config,const psiconv_buffer buf, int lev,
392 psiconv_u32 off, int *length, int *status)
393{
394 psiconv_float_t result,bitvalue;
395 int res,bit;
396 psiconv_u32 temp=0;
397
398 psiconv_progress(config,lev+1,off,"Going to read a float");
399
400 bitvalue = 0.5;
401 result = 1.0;
402 for (bit = 0x33; bit > 0; bit--) {
403 if ((bit == 0x33) || ((bit & 0x07) == 0x07))
404 temp = psiconv_read_u8(config,buf,lev+2,off+ (bit >> 3),&res);
405 if (res)
406 goto ERROR;
407 if (temp & (0x01 << (bit & 0x07)))
408 result += bitvalue;
409 bitvalue /= 2.0;
410 }
411 temp = psiconv_read_u16(config,buf,lev+2,off+6,&res);
412 if (res)
413 goto ERROR;
414 if (temp & 0x8000)
415 result = -result;
416 temp = (temp & 0x7ff0) >> 4;
417 result *= pow2(((int) temp)-0x3ff);
418 psiconv_debug(config,lev+1,off,"Float value: %f",result);
419 if (length)
420 *length = 8;
421 if (*status)
422 *status = res;
423 return result;
424ERROR:
425 psiconv_error(config,lev+1,off,"Reading of float failed");
426 if (length)
427 *length = 0;
428 if (*status)
429 *status = res;
430 return 0.0;
431}
432
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