Navigation
- Accueil
- Présentation :
- FAQ
- Bugs et errata
- Contributions de lecteurs
- Téléchargements
- LXR (référencement des sources)
- Mailing-list
- Liens et Projets reliés
Site hébergé par :
Site hébergé par :
|
[ source navigation ] [ diff markup ] [ identifier search ] [ general search ] |
|||
|
||||
001 /* Copyright (C) 2004 David Decotigny (with I 001 /* Copyright (C) 2004 David Decotigny (with INSA Rennes for vsnprintf) 002 Copyright (C) 2003 The KOS Team 002 Copyright (C) 2003 The KOS Team 003 Copyright (C) 1999 Free Software Foundatio 003 Copyright (C) 1999 Free Software Foundation 004 004 005 This program is free software; you can redi 005 This program is free software; you can redistribute it and/or 006 modify it under the terms of the GNU Genera 006 modify it under the terms of the GNU General Public License 007 as published by the Free Software Foundatio 007 as published by the Free Software Foundation; either version 2 008 of the License, or (at your option) any lat 008 of the License, or (at your option) any later version. 009 009 010 This program is distributed in the hope tha 010 This program is distributed in the hope that it will be useful, 011 but WITHOUT ANY WARRANTY; without even the 011 but WITHOUT ANY WARRANTY; without even the implied warranty of 012 MERCHANTABILITY or FITNESS FOR A PARTICULAR 012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 013 GNU General Public License for more details 013 GNU General Public License for more details. 014 014 015 You should have received a copy of the GNU 015 You should have received a copy of the GNU General Public License 016 along with this program; if not, write to t 016 along with this program; if not, write to the Free Software 017 Foundation, Inc., 59 Temple Place - Suite 3 017 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 018 USA. 018 USA. 019 */ 019 */ 020 #include "klibc.h" 020 #include "klibc.h" 021 021 022 /* For an optimized version, see BSD sources ; 022 /* For an optimized version, see BSD sources ;) */ 023 void *memcpy(void *dst0, const void *src0, reg 023 void *memcpy(void *dst0, const void *src0, register unsigned int size) 024 { 024 { 025 char *dst; 025 char *dst; 026 const char *src; 026 const char *src; 027 for (dst = (char*)dst0, src = (const char*)s 027 for (dst = (char*)dst0, src = (const char*)src0 ; 028 size > 0 ; 028 size > 0 ; 029 dst++, src++, size--) 029 dst++, src++, size--) 030 *dst = *src; 030 *dst = *src; 031 return dst0; 031 return dst0; 032 } 032 } 033 033 034 /* ditto */ 034 /* ditto */ 035 void *memset(void *dst0, register int c, regis 035 void *memset(void *dst0, register int c, register unsigned int length) 036 { 036 { 037 char *dst; 037 char *dst; 038 for (dst = (char*) dst0 ; 038 for (dst = (char*) dst0 ; 039 length > 0 ; 039 length > 0 ; 040 dst++, length --) 040 dst++, length --) 041 *dst = (char)c; 041 *dst = (char)c; 042 return dst0; 042 return dst0; 043 } 043 } 044 044 045 int memcmp(const void *s1, const void *s2, sos 045 int memcmp(const void *s1, const void *s2, sos_size_t len) 046 { 046 { 047 const unsigned char *c1, *c2; 047 const unsigned char *c1, *c2; 048 unsigned int i; 048 unsigned int i; 049 049 050 for (i = 0, c1 = s1, c2 = s2; i < len; i++, 050 for (i = 0, c1 = s1, c2 = s2; i < len; i++, c1++, c2++) 051 { 051 { 052 if(*c1 != *c2) 052 if(*c1 != *c2) 053 return *c1 - *c2; 053 return *c1 - *c2; 054 } 054 } 055 055 056 return 0; 056 return 0; 057 } 057 } 058 058 059 059 060 unsigned int strlen(register const char *str) 060 unsigned int strlen(register const char *str) 061 { 061 { 062 unsigned int retval = 0; 062 unsigned int retval = 0; 063 063 064 while (*str++) 064 while (*str++) 065 retval++; 065 retval++; 066 066 067 return retval; 067 return retval; 068 } 068 } 069 069 070 070 071 unsigned int strnlen(const char * s, sos_size_ 071 unsigned int strnlen(const char * s, sos_size_t count) 072 { 072 { 073 const char *sc; 073 const char *sc; 074 074 075 for (sc = s; count-- && *sc != '\0'; ++sc) 075 for (sc = s; count-- && *sc != '\0'; ++sc) 076 /* nothing */continue; 076 /* nothing */continue; 077 077 078 return sc - s; 078 return sc - s; 079 } 079 } 080 080 081 081 082 char *strzcpy(register char *dst, register con 082 char *strzcpy(register char *dst, register const char *src, register int len) 083 { 083 { 084 int i; 084 int i; 085 085 086 if (len <= 0) 086 if (len <= 0) 087 return dst; 087 return dst; 088 088 089 for (i = 0; i < len; i++) 089 for (i = 0; i < len; i++) 090 { 090 { 091 dst[i] = src[i]; 091 dst[i] = src[i]; 092 if(src[i] == '\0') 092 if(src[i] == '\0') 093 return dst; 093 return dst; 094 } 094 } 095 095 096 dst[len-1] = '\0'; 096 dst[len-1] = '\0'; 097 return dst; 097 return dst; 098 } 098 } 099 099 100 100 101 char *strzcat (char *dest, const char *src, so 101 char *strzcat (char *dest, const char *src, sos_size_t n) 102 { 102 { 103 char *res = dest; 103 char *res = dest; 104 104 105 for ( ; *dest ; dest++); 105 for ( ; *dest ; dest++); 106 106 107 for ( ; *src ; src++, dest++) { 107 for ( ; *src ; src++, dest++) { 108 *dest = *src; 108 *dest = *src; 109 n--; 109 n--; 110 if (n <= 0) 110 if (n <= 0) 111 break; 111 break; 112 } 112 } 113 113 114 *dest = '\0'; 114 *dest = '\0'; 115 return res; 115 return res; 116 } 116 } 117 117 118 int strcmp(register const char *s1, register c 118 int strcmp(register const char *s1, register const char *s2) 119 { 119 { 120 while (*s1 == *s2++) 120 while (*s1 == *s2++) 121 if (*s1++ == 0) 121 if (*s1++ == 0) 122 return (0); 122 return (0); 123 123 124 return (*(const unsigned char *)s1 - *(const 124 return (*(const unsigned char *)s1 - *(const unsigned char *)(s2 - 1)); 125 } 125 } 126 126 127 127 128 int strncmp(register const char *s1, register 128 int strncmp(register const char *s1, register const char *s2, register int len) 129 { 129 { 130 char c1 = '\0', c2 = '\0'; 130 char c1 = '\0', c2 = '\0'; 131 131 132 while (len > 0) 132 while (len > 0) 133 { 133 { 134 c1 = (unsigned char) *s1++; 134 c1 = (unsigned char) *s1++; 135 c2 = (unsigned char) *s2++; 135 c2 = (unsigned char) *s2++; 136 if (c1 == '\0' || c1 != c2) 136 if (c1 == '\0' || c1 != c2) 137 return c1 - c2; 137 return c1 - c2; 138 len--; 138 len--; 139 } 139 } 140 140 141 return c1 - c2; 141 return c1 - c2; 142 } 142 } 143 143 144 144 145 static unsigned long int _random_seed = 931867 145 static unsigned long int _random_seed = 93186752; 146 146 147 /** 147 /** 148 * The following code is borrowed from Glenn R 148 * The following code is borrowed from Glenn Rhoads. 149 * http://remus.rutgers.edu/~rhoads/Code/code. 149 * http://remus.rutgers.edu/~rhoads/Code/code.html 150 * License to be defined... 150 * License to be defined... 151 */ 151 */ 152 unsigned long int random (void) 152 unsigned long int random (void) 153 { 153 { 154 /* The following parameters are recommended se 154 /* The following parameters are recommended settings based on research 155 uncomment the one you want. */ 155 uncomment the one you want. */ 156 156 157 /* For RAND_MAX == 4294967291 */ 157 /* For RAND_MAX == 4294967291 */ 158 static unsigned int a = 1588635695, q = 2, 158 static unsigned int a = 1588635695, q = 2, r = 1117695901; 159 /* static unsigned int a = 1223106847, m = 429 159 /* static unsigned int a = 1223106847, m = 4294967291U, q = 3, r = 625646750;*/ 160 /* static unsigned int a = 279470273, m = 4294 160 /* static unsigned int a = 279470273, m = 4294967291U, q = 15, r = 102913196;*/ 161 161 162 /* For RAND_MAX == 2147483647 */ 162 /* For RAND_MAX == 2147483647 */ 163 /* static unsigned int a = 1583458089, m = 214 163 /* static unsigned int a = 1583458089, m = 2147483647, q = 1, r = 564025558; */ 164 /* static unsigned int a = 784588716, m = 2147 164 /* static unsigned int a = 784588716, m = 2147483647, q = 2, r = 578306215; */ 165 /* static unsigned int a = 16807, m = 21474836 165 /* static unsigned int a = 16807, m = 2147483647, q = 127773, r = 2836; */ 166 /* static unsigned int a = 950706376, m = 2147 166 /* static unsigned int a = 950706376, m = 2147483647, q = 2, r = 246070895; */ 167 167 168 _random_seed = a*(_random_seed % q) - r*(_r 168 _random_seed = a*(_random_seed % q) - r*(_random_seed / q); 169 return _random_seed; 169 return _random_seed; 170 } 170 } 171 171 172 172 173 void srandom (unsigned long int seed) 173 void srandom (unsigned long int seed) 174 { 174 { 175 _random_seed = seed; 175 _random_seed = seed; 176 } 176 } 177 177 178 178 179 /* I (d2) borrowed and rewrote this for Nachos 179 /* I (d2) borrowed and rewrote this for Nachos/INSA Rennes. Thanks to 180 them for having kindly allowed me to do so. 180 them for having kindly allowed me to do so. */ 181 int vsnprintf(char *buff, sos_size_t len, cons 181 int vsnprintf(char *buff, sos_size_t len, const char * format, va_list ap) 182 { 182 { 183 sos_size_t i, result; 183 sos_size_t i, result; >> 184 sos_bool_t fmt_modifiers = FALSE; >> 185 sos_bool_t prefix_long = FALSE; >> 186 sos_bool_t prefix_long_long = FALSE; 184 187 185 if (!buff || !format || (len < 0)) 188 if (!buff || !format || (len < 0)) 186 return -1; 189 return -1; 187 190 188 #define PUTCHAR(thechar) \ 191 #define PUTCHAR(thechar) \ 189 do { \ 192 do { \ 190 if (result < len-1) \ 193 if (result < len-1) \ 191 *buff++ = (thechar); \ 194 *buff++ = (thechar); \ 192 result++; \ 195 result++; \ 193 } while (0) 196 } while (0) 194 197 195 result = 0; 198 result = 0; 196 for(i=0 ; format[i] != '\0' ; i++){ !! 199 for(i=0 ; format[i] != '\0' ; i++) 197 switch (format[i]) !! 200 { 198 { !! 201 if (!fmt_modifiers && (format[i] != '%')) 199 case '%': !! 202 { 200 i++; !! 203 PUTCHAR(format[i]); 201 switch(format[i]) !! 204 continue; 202 { !! 205 } 203 case '%': !! 206 >> 207 switch (format[i]) >> 208 { >> 209 case '%': >> 210 if (fmt_modifiers) 204 { 211 { 205 PUTCHAR('%'); 212 PUTCHAR('%'); >> 213 fmt_modifiers = FALSE; 206 break; 214 break; 207 } 215 } 208 case 'i':; !! 216 209 case 'd': !! 217 fmt_modifiers = TRUE; 210 { !! 218 prefix_long = FALSE; 211 int integer = va_arg(ap,int); !! 219 prefix_long_long = FALSE; 212 int cpt2 = 0; !! 220 break; 213 char buff_int[16]; !! 221 214 !! 222 case 'l': 215 if (integer<0) !! 223 if (prefix_long) 216 PUTCHAR('-'); !! 224 prefix_long_long = TRUE; 217 /* Ne fait pas integer = -intege !! 225 else 218 n'a pas d'equivalent positif !! 226 prefix_long = TRUE; 219 !! 227 break; 220 do { !! 228 221 int m10 = integer%10; !! 229 case 'u': 222 m10 = (m10 < 0)? -m10:m10; !! 230 { 223 buff_int[cpt2++]=(char)('0'+ m !! 231 if (! prefix_long_long) 224 integer=integer/10; !! 232 { 225 } while(integer!=0); !! 233 unsigned int integer = va_arg(ap,unsigned int); 226 !! 234 int cpt2 = 0; 227 for(cpt2 = cpt2 - 1 ; cpt2 >= 0 !! 235 char buff_int[16]; 228 PUTCHAR(buff_int[cpt2]); !! 236 229 !! 237 do { 230 break; !! 238 int m10 = integer%10; 231 } !! 239 buff_int[cpt2++]=(char)('0'+ m10); >> 240 integer=integer/10; >> 241 } while(integer!=0); 232 242 233 case 'c': !! 243 for(cpt2 = cpt2 - 1 ; cpt2 >= 0 ; cpt2--) 234 { !! 244 PUTCHAR(buff_int[cpt2]); 235 int value = va_arg(ap,int); !! 245 } 236 PUTCHAR((char)value); !! 246 else 237 break; !! 247 { 238 } !! 248 unsigned long long int integer >> 249 = va_arg(ap,unsigned long long int); >> 250 int cpt2 = 0; >> 251 char buff_int[32]; >> 252 >> 253 do { >> 254 int m10 = integer%10; >> 255 buff_int[cpt2++]=(char)('0'+ m10); >> 256 integer=integer/10; >> 257 } while(integer!=0); 239 258 240 case 's': !! 259 for(cpt2 = cpt2 - 1 ; cpt2 >= 0 ; cpt2--) 241 { !! 260 PUTCHAR(buff_int[cpt2]); 242 char *string = va_arg(ap,char *) !! 261 } 243 if (! string) !! 262 } 244 string = "(null)"; !! 263 fmt_modifiers = FALSE; 245 for( ; *string != '\0' ; string+ !! 264 break; 246 PUTCHAR(*string); << 247 break; << 248 } << 249 265 250 case 'p': !! 266 case 'i': 251 PUTCHAR('0'); !! 267 case 'd': 252 PUTCHAR('x'); !! 268 { 253 case 'x': !! 269 if (! prefix_long_long) 254 { !! 270 { 255 unsigned int hexa = va_arg(ap,in !! 271 int integer = va_arg(ap,int); 256 unsigned int nb; !! 272 int cpt2 = 0; 257 int i, had_nonzero = 0; !! 273 char buff_int[16]; 258 for(i=0 ; i < 8 ; i++) !! 274 259 { !! 275 if (integer<0) 260 nb = (unsigned int)(hexa << !! 276 PUTCHAR('-'); 261 nb = (nb >> 28) & 0xf; !! 277 /* Ne fait pas integer = -integer ici parce que INT_MIN 262 // Skip the leading zeros !! 278 n'a pas d'equivalent positif (int = [-2^31, 2^31-1]) */ 263 if (nb == 0) !! 279 264 { !! 280 do { 265 if (had_nonzero) !! 281 int m10 = integer%10; 266 PUTCHAR('0'); !! 282 m10 = (m10 < 0)? -m10:m10; 267 } !! 283 buff_int[cpt2++]=(char)('0'+ m10); 268 else !! 284 integer=integer/10; 269 { !! 285 } while(integer!=0); 270 had_nonzero = 1; !! 286 271 if (nb < 10) !! 287 for(cpt2 = cpt2 - 1 ; cpt2 >= 0 ; cpt2--) 272 PUTCHAR('0'+nb); !! 288 PUTCHAR(buff_int[cpt2]); 273 else !! 289 } 274 PUTCHAR('a'+(nb-10)); !! 290 else 275 } !! 291 { 276 } !! 292 long long int integer = va_arg(ap,long long int); 277 if (! had_nonzero) !! 293 int cpt2 = 0; 278 PUTCHAR('0'); !! 294 char buff_int[32]; 279 break; !! 295 280 } !! 296 if (integer<0) >> 297 PUTCHAR('-'); >> 298 /* Ne fait pas integer = -integer ici parce que INT_MIN >> 299 n'a pas d'equivalent positif (int = [-2^63, 2^63-1]) */ >> 300 >> 301 do { >> 302 int m10 = integer%10; >> 303 m10 = (m10 < 0)? -m10:m10; >> 304 buff_int[cpt2++]=(char)('0'+ m10); >> 305 integer=integer/10; >> 306 } while(integer!=0); >> 307 >> 308 for(cpt2 = cpt2 - 1 ; cpt2 >= 0 ; cpt2--) >> 309 PUTCHAR(buff_int[cpt2]); >> 310 } >> 311 } >> 312 fmt_modifiers = FALSE; >> 313 break; >> 314 >> 315 case 'c': >> 316 { >> 317 int value = va_arg(ap,int); >> 318 PUTCHAR((char)value); >> 319 fmt_modifiers = FALSE; 281 break; 320 break; 282 << 283 default: << 284 PUTCHAR('%'); << 285 PUTCHAR(format[i]); << 286 } 321 } 287 break; !! 322 288 !! 323 case 's': 289 default: !! 324 { 290 PUTCHAR(format[i]); !! 325 char *string = va_arg(ap,char *); 291 } !! 326 if (! string) 292 } !! 327 string = "(null)"; 293 !! 328 for( ; *string != '\0' ; string++) >> 329 PUTCHAR(*string); >> 330 fmt_modifiers = FALSE; >> 331 break; >> 332 } >> 333 >> 334 case 'p': >> 335 PUTCHAR('0'); >> 336 PUTCHAR('x'); >> 337 case 'x': >> 338 { >> 339 unsigned long long int hexa; >> 340 unsigned long long int nb; >> 341 int i, had_nonzero = 0; >> 342 >> 343 if (prefix_long_long) >> 344 hexa = va_arg(ap,unsigned long long int); >> 345 else >> 346 hexa = va_arg(ap,unsigned int); >> 347 >> 348 for(i=0 ; i < 16 ; i++) >> 349 { >> 350 nb = (unsigned long long int)(hexa << (i*4)); >> 351 nb = (nb >> 60) & 0xf; >> 352 // Skip the leading zeros >> 353 if (nb == 0) >> 354 { >> 355 if (had_nonzero) >> 356 PUTCHAR('0'); >> 357 } >> 358 else >> 359 { >> 360 had_nonzero = 1; >> 361 if (nb < 10) >> 362 PUTCHAR('0'+nb); >> 363 else >> 364 PUTCHAR('a'+(nb-10)); >> 365 } >> 366 } >> 367 if (! had_nonzero) >> 368 PUTCHAR('0'); >> 369 } >> 370 fmt_modifiers = FALSE; >> 371 break; >> 372 >> 373 default: >> 374 PUTCHAR('%'); >> 375 if (prefix_long) >> 376 PUTCHAR('l'); >> 377 if (prefix_long_long) >> 378 PUTCHAR('l'); >> 379 PUTCHAR(format[i]); >> 380 fmt_modifiers = FALSE; >> 381 } >> 382 } >> 383 294 *buff = '\0'; 384 *buff = '\0'; 295 return result; 385 return result; 296 } 386 } 297 387 298 388 299 int snprintf(char * buff, sos_size_t len, cons 389 int snprintf(char * buff, sos_size_t len, const char *format, ...) 300 { 390 { 301 va_list ap; 391 va_list ap; 302 392 303 va_start(ap, format); 393 va_start(ap, format); 304 len = vsnprintf(buff, len, format, ap); 394 len = vsnprintf(buff, len, format, ap); 305 va_end(ap); 395 va_end(ap); 306 396 307 return len; 397 return len; 308 } 398 }
| [ source navigation ] | [ diff markup ] | [ identifier search ] | [ general search ] |