oculus1: b2abb08c8f94 libovr/Src/Kernel/OVR

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view libovr/Src/Kernel/OVR_Std.h @ 10:b2abb08c8f94

proper FPS-style vr tracking

author	John Tsiombikas <nuclear@member.fsf.org>
date	Fri, 20 Sep 2013 06:49:39 +0300
parents	e2f9e4603129
children

line source

1 /************************************************************************************

3 PublicHeader: OVR.h

4 Filename : OVR_Std.h

5 Content : Standard C function interface

6 Created : September 19, 2012

7 Notes :

11 Use of this software is subject to the terms of the Oculus license

12 agreement provided at the time of installation or download, or which

13 otherwise accompanies this software in either electronic or hard copy form.

15 ************************************************************************************/

17 #ifndef OVR_Std_h

18 #define OVR_Std_h

20 #include "OVR_Types.h"

21 #include <stdarg.h> // for va_list args

22 #include <string.h>

23 #include <stdio.h>

24 #include <stdlib.h>

25 #include <ctype.h>

27 #if !defined(OVR_OS_WINCE) && defined(OVR_CC_MSVC) && (OVR_CC_MSVC >= 1400)

28 #define OVR_MSVC_SAFESTRING

29 #include <errno.h>

30 #endif

32 // Wide-char funcs

33 #include <wchar.h>

34 #include <wctype.h>

36 namespace OVR {

38 #if defined(OVR_OS_WIN32)

39 inline char* OVR_CDECL OVR_itoa(int val, char *dest, UPInt destsize, int radix)

40 {

41 #if defined(OVR_MSVC_SAFESTRING)

42 _itoa_s(val, dest, destsize, radix);

43 return dest;

44 #else

45 OVR_UNUSED(destsize);

46 return itoa(val, dest, radix);

47 #endif

48 }

49 #else // OVR_OS_WIN32

50 inline char* OVR_itoa(int val, char* dest, unsigned int len, int radix)

51 {

52 if (val == 0)

53 {

54 if (len > 1)

55 {

56 dest[0] = '0';

57 dest[1] = '\0';

58 }

59 return dest;

60 }

62 int cur = val;

63 unsigned int i = 0;

64 unsigned int sign = 0;

66 if (val < 0)

67 {

68 val = -val;

69 sign = 1;

70 }

72 while ((val != 0) && (i < (len - 1 - sign)))

73 {

74 cur = val % radix;

75 val /= radix;

77 if (radix == 16)

78 {

79 switch(cur)

80 {

81 case 10:

82 dest[i] = 'a';

83 break;

84 case 11:

85 dest[i] = 'b';

86 break;

87 case 12:

88 dest[i] = 'c';

89 break;

90 case 13:

91 dest[i] = 'd';

92 break;

93 case 14:

94 dest[i] = 'e';

95 break;

96 case 15:

97 dest[i] = 'f';

98 break;

99 default:

100 dest[i] = (char)('0' + cur);

101 break;

102 }

103 }

104 else

105 {

106 dest[i] = (char)('0' + cur);

107 }

108 ++i;

109 }

110

111 if (sign)

112 {

113 dest[i++] = '-';

114 }

115

116 for (unsigned int j = 0; j < i / 2; ++j)

117 {

118 char tmp = dest[j];

119 dest[j] = dest[i - 1 - j];

120 dest[i - 1 - j] = tmp;

121 }

122 dest[i] = '\0';

123

124 return dest;

125 }

126

127 #endif

128

129

130 // String functions

131

132 inline UPInt OVR_CDECL OVR_strlen(const char* str)

133 {

134 return strlen(str);

135 }

136

137 inline char* OVR_CDECL OVR_strcpy(char* dest, UPInt destsize, const char* src)

138 {

139 #if defined(OVR_MSVC_SAFESTRING)

140 strcpy_s(dest, destsize, src);

141 return dest;

142 #else

143 OVR_UNUSED(destsize);

144 return strcpy(dest, src);

145 #endif

146 }

147

148 inline char* OVR_CDECL OVR_strncpy(char* dest, UPInt destsize, const char* src, UPInt count)

149 {

150 #if defined(OVR_MSVC_SAFESTRING)

151 strncpy_s(dest, destsize, src, count);

152 return dest;

153 #else

154 OVR_UNUSED(destsize);

155 return strncpy(dest, src, count);

156 #endif

157 }

158

159 inline char * OVR_CDECL OVR_strcat(char* dest, UPInt destsize, const char* src)

160 {

161 #if defined(OVR_MSVC_SAFESTRING)

162 strcat_s(dest, destsize, src);

163 return dest;

164 #else

165 OVR_UNUSED(destsize);

166 return strcat(dest, src);

167 #endif

168 }

169

170 inline int OVR_CDECL OVR_strcmp(const char* dest, const char* src)

171 {

172 return strcmp(dest, src);

173 }

174

175 inline const char* OVR_CDECL OVR_strchr(const char* str, char c)

176 {

177 return strchr(str, c);

178 }

179

180 inline char* OVR_CDECL OVR_strchr(char* str, char c)

181 {

182 return strchr(str, c);

183 }

184

185 inline const char* OVR_strrchr(const char* str, char c)

186 {

187 UPInt len = OVR_strlen(str);

188 for (UPInt i=len; i>0; i--)

189 if (str[i]==c)

190 return str+i;

191 return 0;

192 }

193

194 inline const UByte* OVR_CDECL OVR_memrchr(const UByte* str, UPInt size, UByte c)

195 {

196 for (SPInt i = (SPInt)size - 1; i >= 0; i--)

197 {

198 if (str[i] == c)

199 return str + i;

200 }

201 return 0;

202 }

203

204 inline char* OVR_CDECL OVR_strrchr(char* str, char c)

205 {

206 UPInt len = OVR_strlen(str);

207 for (UPInt i=len; i>0; i--)

208 if (str[i]==c)

209 return str+i;

210 return 0;

211 }

212

213

214 double OVR_CDECL OVR_strtod(const char* string, char** tailptr);

215

216 inline long OVR_CDECL OVR_strtol(const char* string, char** tailptr, int radix)

217 {

218 return strtol(string, tailptr, radix);

219 }

220

221 inline long OVR_CDECL OVR_strtoul(const char* string, char** tailptr, int radix)

222 {

223 return strtoul(string, tailptr, radix);

224 }

225

226 inline int OVR_CDECL OVR_strncmp(const char* ws1, const char* ws2, UPInt size)

227 {

228 return strncmp(ws1, ws2, size);

229 }

230

231 inline UInt64 OVR_CDECL OVR_strtouq(const char *nptr, char **endptr, int base)

232 {

233 #if defined(OVR_CC_MSVC) && !defined(OVR_OS_WINCE)

234 return _strtoui64(nptr, endptr, base);

235 #else

236 return strtoull(nptr, endptr, base);

237 #endif

238 }

239

240 inline SInt64 OVR_CDECL OVR_strtoq(const char *nptr, char **endptr, int base)

241 {

242 #if defined(OVR_CC_MSVC) && !defined(OVR_OS_WINCE)

243 return _strtoi64(nptr, endptr, base);

244 #else

245 return strtoll(nptr, endptr, base);

246 #endif

247 }

248

249

250 inline SInt64 OVR_CDECL OVR_atoq(const char* string)

251 {

252 #if defined(OVR_CC_MSVC) && !defined(OVR_OS_WINCE)

253 return _atoi64(string);

254 #else

255 return atoll(string);

256 #endif

257 }

258

259 inline UInt64 OVR_CDECL OVR_atouq(const char* string)

260 {

261 return OVR_strtouq(string, NULL, 10);

262 }

263

264

265 // Implemented in GStd.cpp in platform-specific manner.

266 int OVR_CDECL OVR_stricmp(const char* dest, const char* src);

267 int OVR_CDECL OVR_strnicmp(const char* dest, const char* src, UPInt count);

268

269 inline UPInt OVR_CDECL OVR_sprintf(char *dest, UPInt destsize, const char* format, ...)

270 {

271 va_list argList;

272 va_start(argList,format);

273 UPInt ret;

274 #if defined(OVR_CC_MSVC)

275 #if defined(OVR_MSVC_SAFESTRING)

276 ret = _vsnprintf_s(dest, destsize, _TRUNCATE, format, argList);

277 OVR_ASSERT(ret != -1);

278 #else

279 OVR_UNUSED(destsize);

280 ret = _vsnprintf(dest, destsize - 1, format, argList); // -1 for space for the null character

281 OVR_ASSERT(ret != -1);

282 dest[destsize-1] = 0;

283 #endif

284 #else

285 OVR_UNUSED(destsize);

286 ret = vsprintf(dest, format, argList);

287 OVR_ASSERT(ret < destsize);

288 #endif

289 va_end(argList);

290 return ret;

291 }

292

293 inline UPInt OVR_CDECL OVR_vsprintf(char *dest, UPInt destsize, const char * format, va_list argList)

294 {

295 UPInt ret;

296 #if defined(OVR_CC_MSVC)

297 #if defined(OVR_MSVC_SAFESTRING)

298 dest[0] = '\0';

299 int rv = vsnprintf_s(dest, destsize, _TRUNCATE, format, argList);

300 if (rv == -1)

301 {

302 dest[destsize - 1] = '\0';

303 ret = destsize - 1;

304 }

305 else

306 ret = (UPInt)rv;

307 #else

308 OVR_UNUSED(destsize);

309 int rv = _vsnprintf(dest, destsize - 1, format, argList);

310 OVR_ASSERT(rv != -1);

311 ret = (UPInt)rv;

312 dest[destsize-1] = 0;

313 #endif

314 #else

315 OVR_UNUSED(destsize);

316 ret = (UPInt)vsprintf(dest, format, argList);

317 OVR_ASSERT(ret < destsize);

318 #endif

319 return ret;

320 }

321

322 // Returns the number of characters in the formatted string.

323 inline UPInt OVR_CDECL OVR_vscprintf(const char * format, va_list argList)

324 {

325 UPInt ret;

326 #if defined(OVR_CC_MSVC)

327 ret = (UPInt) _vscprintf(format, argList);

328 #else

329 ret = (UPInt) vsnprintf(NULL, 0, format, argList);

330 #endif

331 return ret;

332 }

333

334

335 wchar_t* OVR_CDECL OVR_wcscpy(wchar_t* dest, UPInt destsize, const wchar_t* src);

336 wchar_t* OVR_CDECL OVR_wcsncpy(wchar_t* dest, UPInt destsize, const wchar_t* src, UPInt count);

337 wchar_t* OVR_CDECL OVR_wcscat(wchar_t* dest, UPInt destsize, const wchar_t* src);

338 UPInt OVR_CDECL OVR_wcslen(const wchar_t* str);

339 int OVR_CDECL OVR_wcscmp(const wchar_t* a, const wchar_t* b);

340 int OVR_CDECL OVR_wcsicmp(const wchar_t* a, const wchar_t* b);

341

342 inline int OVR_CDECL OVR_wcsicoll(const wchar_t* a, const wchar_t* b)

343 {

344 #if defined(OVR_OS_WIN32)

345 #if defined(OVR_CC_MSVC) && (OVR_CC_MSVC >= 1400)

346 return ::_wcsicoll(a, b);

347 #else

348 return ::wcsicoll(a, b);

349 #endif

350 #else

351 // not supported, use regular wcsicmp

352 return OVR_wcsicmp(a, b);

353 #endif

354 }

355

356 inline int OVR_CDECL OVR_wcscoll(const wchar_t* a, const wchar_t* b)

357 {

358 #if defined(OVR_OS_WIN32) || defined(OVR_OS_LINUX)

359 return wcscoll(a, b);

360 #else

361 // not supported, use regular wcscmp

362 return OVR_wcscmp(a, b);

363 #endif

364 }

365

366 #ifndef OVR_NO_WCTYPE

367

368 inline int OVR_CDECL UnicodeCharIs(const UInt16* table, wchar_t charCode)

369 {

370 unsigned offset = table[charCode >> 8];

371 if (offset == 0) return 0;

372 if (offset == 1) return 1;

373 return (table[offset + ((charCode >> 4) & 15)] & (1 << (charCode & 15))) != 0;

374 }

375

376 extern const UInt16 UnicodeAlnumBits[];

377 extern const UInt16 UnicodeAlphaBits[];

378 extern const UInt16 UnicodeDigitBits[];

379 extern const UInt16 UnicodeSpaceBits[];

380 extern const UInt16 UnicodeXDigitBits[];

381

382 // Uncomment if necessary

383 //extern const UInt16 UnicodeCntrlBits[];

384 //extern const UInt16 UnicodeGraphBits[];

385 //extern const UInt16 UnicodeLowerBits[];

386 //extern const UInt16 UnicodePrintBits[];

387 //extern const UInt16 UnicodePunctBits[];

388 //extern const UInt16 UnicodeUpperBits[];

389

390 inline int OVR_CDECL OVR_iswalnum (wchar_t charCode) { return UnicodeCharIs(UnicodeAlnumBits, charCode); }

391 inline int OVR_CDECL OVR_iswalpha (wchar_t charCode) { return UnicodeCharIs(UnicodeAlphaBits, charCode); }

392 inline int OVR_CDECL OVR_iswdigit (wchar_t charCode) { return UnicodeCharIs(UnicodeDigitBits, charCode); }

393 inline int OVR_CDECL OVR_iswspace (wchar_t charCode) { return UnicodeCharIs(UnicodeSpaceBits, charCode); }

394 inline int OVR_CDECL OVR_iswxdigit(wchar_t charCode) { return UnicodeCharIs(UnicodeXDigitBits, charCode); }

395

396 // Uncomment if necessary

397 //inline int OVR_CDECL OVR_iswcntrl (wchar_t charCode) { return UnicodeCharIs(UnicodeCntrlBits, charCode); }

398 //inline int OVR_CDECL OVR_iswgraph (wchar_t charCode) { return UnicodeCharIs(UnicodeGraphBits, charCode); }

399 //inline int OVR_CDECL OVR_iswlower (wchar_t charCode) { return UnicodeCharIs(UnicodeLowerBits, charCode); }

400 //inline int OVR_CDECL OVR_iswprint (wchar_t charCode) { return UnicodeCharIs(UnicodePrintBits, charCode); }

401 //inline int OVR_CDECL OVR_iswpunct (wchar_t charCode) { return UnicodeCharIs(UnicodePunctBits, charCode); }

402 //inline int OVR_CDECL OVR_iswupper (wchar_t charCode) { return UnicodeCharIs(UnicodeUpperBits, charCode); }

403

404 int OVR_CDECL OVR_towupper(wchar_t charCode);

405 int OVR_CDECL OVR_towlower(wchar_t charCode);

406

407 #else // OVR_NO_WCTYPE

408

409 inline int OVR_CDECL OVR_iswspace(wchar_t c)

410 {

411 return iswspace(c);

412 }

413

414 inline int OVR_CDECL OVR_iswdigit(wchar_t c)

415 {

416 return iswdigit(c);

417 }

418

419 inline int OVR_CDECL OVR_iswxdigit(wchar_t c)

420 {

421 return iswxdigit(c);

422 }

423

424 inline int OVR_CDECL OVR_iswalpha(wchar_t c)

425 {

426 return iswalpha(c);

427 }

428

429 inline int OVR_CDECL OVR_iswalnum(wchar_t c)

430 {

431 return iswalnum(c);

432 }

433

434 inline wchar_t OVR_CDECL OVR_towlower(wchar_t c)

435 {

436 return (wchar_t)towlower(c);

437 }

438

439 inline wchar_t OVR_towupper(wchar_t c)

440 {

441 return (wchar_t)towupper(c);

442 }

443

444 #endif // OVR_NO_WCTYPE

445

446 // ASCII versions of tolower and toupper. Don't use "char"

447 inline int OVR_CDECL OVR_tolower(int c)

448 {

449 return (c >= 'A' && c <= 'Z') ? c - 'A' + 'a' : c;

450 }

451

452 inline int OVR_CDECL OVR_toupper(int c)

453 {

454 return (c >= 'a' && c <= 'z') ? c - 'a' + 'A' : c;

455 }

456

457

458

459 inline double OVR_CDECL OVR_wcstod(const wchar_t* string, wchar_t** tailptr)

460 {

461 #if defined(OVR_OS_OTHER)

462 OVR_UNUSED(tailptr);

463 char buffer[64];

464 char* tp = NULL;

465 UPInt max = OVR_wcslen(string);

466 if (max > 63) max = 63;

467 unsigned char c = 0;

468 for (UPInt i=0; i < max; i++)

469 {

470 c = (unsigned char)string[i];

471 buffer[i] = ((c) < 128 ? (char)c : '!');

472 }

473 buffer[max] = 0;

474 return OVR_strtod(buffer, &tp);

475 #else

476 return wcstod(string, tailptr);

477 #endif

478 }

479

480 inline long OVR_CDECL OVR_wcstol(const wchar_t* string, wchar_t** tailptr, int radix)

481 {

482 #if defined(OVR_OS_OTHER)

483 OVR_UNUSED(tailptr);

484 char buffer[64];

485 char* tp = NULL;

486 UPInt max = OVR_wcslen(string);

487 if (max > 63) max = 63;

488 unsigned char c = 0;

489 for (UPInt i=0; i < max; i++)

490 {

491 c = (unsigned char)string[i];

492 buffer[i] = ((c) < 128 ? (char)c : '!');

493 }

494 buffer[max] = 0;

495 return strtol(buffer, &tp, radix);

496 #else

497 return wcstol(string, tailptr, radix);

498 #endif

499 }

500

501 } // OVR

502

503 #endif // OVR_Std_h