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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 /* I (d2) borrowed and rewrote this for Nachos 145 /* I (d2) borrowed and rewrote this for Nachos/INSA Rennes. Thanks to 146 them for having kindly allowed me to do so. 146 them for having kindly allowed me to do so. */ 147 int vsnprintf(char *buff, sos_size_t len, cons 147 int vsnprintf(char *buff, sos_size_t len, const char * format, va_list ap) 148 { 148 { 149 sos_size_t i, result; 149 sos_size_t i, result; 150 150 151 if (!buff || !format || (len < 0)) 151 if (!buff || !format || (len < 0)) 152 return -1; 152 return -1; 153 153 154 #define PUTCHAR(thechar) \ 154 #define PUTCHAR(thechar) \ 155 do { \ 155 do { \ 156 if (result < len-1) \ 156 if (result < len-1) \ 157 *buff++ = (thechar); \ 157 *buff++ = (thechar); \ 158 result++; \ 158 result++; \ 159 } while (0) 159 } while (0) 160 160 161 result = 0; 161 result = 0; 162 for(i=0 ; format[i] != '\0' ; i++){ 162 for(i=0 ; format[i] != '\0' ; i++){ 163 switch (format[i]) 163 switch (format[i]) 164 { 164 { 165 case '%': 165 case '%': 166 i++; 166 i++; 167 switch(format[i]) 167 switch(format[i]) 168 { 168 { 169 case '%': 169 case '%': 170 { 170 { 171 PUTCHAR('%'); 171 PUTCHAR('%'); 172 break; 172 break; 173 } 173 } 174 case 'i':; 174 case 'i':; 175 case 'd': 175 case 'd': 176 { 176 { 177 int integer = va_arg(ap,int); 177 int integer = va_arg(ap,int); 178 int cpt2 = 0; 178 int cpt2 = 0; 179 char buff_int[16]; 179 char buff_int[16]; 180 180 181 if (integer<0) 181 if (integer<0) 182 PUTCHAR('-'); 182 PUTCHAR('-'); 183 /* Ne fait pas integer = -intege 183 /* Ne fait pas integer = -integer ici parce que INT_MIN 184 n'a pas d'equivalent positif 184 n'a pas d'equivalent positif (int = [-2^31, 2^31-1]) */ 185 185 186 do { 186 do { 187 int m10 = integer%10; 187 int m10 = integer%10; 188 m10 = (m10 < 0)? -m10:m10; 188 m10 = (m10 < 0)? -m10:m10; 189 buff_int[cpt2++]=(char)('0'+ m 189 buff_int[cpt2++]=(char)('0'+ m10); 190 integer=integer/10; 190 integer=integer/10; 191 } while(integer!=0); 191 } while(integer!=0); 192 192 193 for(cpt2 = cpt2 - 1 ; cpt2 >= 0 193 for(cpt2 = cpt2 - 1 ; cpt2 >= 0 ; cpt2--) 194 PUTCHAR(buff_int[cpt2]); 194 PUTCHAR(buff_int[cpt2]); 195 195 196 break; 196 break; 197 } 197 } 198 198 199 case 'c': 199 case 'c': 200 { 200 { 201 int value = va_arg(ap,int); 201 int value = va_arg(ap,int); 202 PUTCHAR((char)value); 202 PUTCHAR((char)value); 203 break; 203 break; 204 } 204 } 205 205 206 case 's': 206 case 's': 207 { 207 { 208 char *string = va_arg(ap,char *) 208 char *string = va_arg(ap,char *); 209 if (! string) 209 if (! string) 210 string = "(null)"; 210 string = "(null)"; 211 for( ; *string != '\0' ; string+ 211 for( ; *string != '\0' ; string++) 212 PUTCHAR(*string); 212 PUTCHAR(*string); 213 break; 213 break; 214 } 214 } 215 215 216 case 'x': 216 case 'x': 217 { 217 { 218 unsigned int hexa = va_arg(ap,in 218 unsigned int hexa = va_arg(ap,int); 219 unsigned int nb; 219 unsigned int nb; 220 int i, had_nonzero = 0; 220 int i, had_nonzero = 0; 221 for(i=0 ; i < 8 ; i++) 221 for(i=0 ; i < 8 ; i++) 222 { 222 { 223 nb = (unsigned int)(hexa << 223 nb = (unsigned int)(hexa << (i*4)); 224 nb = (nb >> 28) & 0xf; 224 nb = (nb >> 28) & 0xf; 225 // Skip the leading zeros 225 // Skip the leading zeros 226 if (nb == 0) 226 if (nb == 0) 227 { 227 { 228 if (had_nonzero) 228 if (had_nonzero) 229 PUTCHAR('0'); 229 PUTCHAR('0'); 230 } 230 } 231 else 231 else 232 { 232 { 233 had_nonzero = 1; 233 had_nonzero = 1; 234 if (nb < 10) 234 if (nb < 10) 235 PUTCHAR('0'+nb); 235 PUTCHAR('0'+nb); 236 else 236 else 237 PUTCHAR('a'+(nb-10)); 237 PUTCHAR('a'+(nb-10)); 238 } 238 } 239 } 239 } 240 if (! had_nonzero) 240 if (! had_nonzero) 241 PUTCHAR('0'); 241 PUTCHAR('0'); 242 break; 242 break; 243 } 243 } 244 break; 244 break; 245 245 246 default: 246 default: 247 PUTCHAR('%'); 247 PUTCHAR('%'); 248 PUTCHAR(format[i]); 248 PUTCHAR(format[i]); 249 } 249 } 250 break; 250 break; 251 251 252 default: 252 default: 253 PUTCHAR(format[i]); 253 PUTCHAR(format[i]); 254 } 254 } 255 } 255 } 256 256 257 *buff = '\0'; 257 *buff = '\0'; 258 return result; 258 return result; 259 } 259 } 260 260 261 261 262 int snprintf(char * buff, sos_size_t len, cons 262 int snprintf(char * buff, sos_size_t len, const char *format, ...) 263 { 263 { 264 va_list ap; 264 va_list ap; 265 265 266 va_start(ap, format); 266 va_start(ap, format); 267 len = vsnprintf(buff, len, format, ap); 267 len = vsnprintf(buff, len, format, ap); 268 va_end(ap); 268 va_end(ap); 269 269 270 return len; 270 return len; 271 } 271 }
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