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| Rev | Author | Line No. | Line |
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| 2 | pj | 1 | /* Project: OSLib |
| 2 | * Description: The OS Construction Kit |
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| 3 | * Date: 1.6.2000 |
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| 4 | * Idea by: Luca Abeni & Gerardo Lamastra |
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| 5 | * |
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| 6 | * OSLib is an SO project aimed at developing a common, easy-to-use |
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| 7 | * low-level infrastructure for developing OS kernels and Embedded |
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| 8 | * Applications; it partially derives from the HARTIK project but it |
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| 9 | * currently is independently developed. |
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| 10 | * |
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| 11 | * OSLib is distributed under GPL License, and some of its code has |
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| 12 | * been derived from the Linux kernel source; also some important |
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| 13 | * ideas come from studying the DJGPP go32 extender. |
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| 14 | * |
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| 15 | * We acknowledge the Linux Community, Free Software Foundation, |
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| 16 | * D.J. Delorie and all the other developers who believe in the |
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| 17 | * freedom of software and ideas. |
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| 18 | * |
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| 19 | * For legalese, check out the included GPL license. |
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| 20 | */ |
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| 21 | |||
| 22 | #include <ll/i386/stdlib.h> |
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| 23 | #include <ll/i386/string.h> |
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| 24 | #include <ll/i386/limits.h> |
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| 25 | #include <ll/stdarg.h> |
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| 26 | #include <ll/ctype.h> |
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| 27 | #include "sprintf.h" |
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| 28 | |||
| 29 | FILE(sscanf); |
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| 30 | |||
| 31 | #define STD_SIZE 0 |
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| 32 | #define SHORT_SIZE 1 |
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| 33 | #define LONG_SIZE 2 |
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| 34 | |||
| 35 | int vsscanf(char *buf,char *fmt,va_list parms) |
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| 36 | { |
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| 37 | int scanned = 0,size = 0,suppress = 0; |
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| 38 | int w = 0,flag = 0,l = 0; |
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| 39 | char c,*c_ptr; |
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| 40 | long int n1,*n1l; |
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| 41 | int *n1b; |
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| 42 | short int *n1s; |
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| 43 | long unsigned n2,*n2l,parsing = 0; |
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| 44 | unsigned *n2b; |
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| 45 | short unsigned *n2s; |
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| 46 | double n3,*n3l; |
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| 47 | float *n3s; |
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| 48 | char *base = buf; |
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| 49 | while (*fmt != 0) { |
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| 50 | if (*fmt != '%' && !parsing) { |
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| 51 | /* No token detected */ |
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| 52 | fmt++; |
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| 53 | } |
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| 54 | else { |
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| 55 | /* We need to make a conversion */ |
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| 56 | if (*fmt == '%') { |
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| 57 | fmt++; |
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| 58 | parsing = 1; |
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| 59 | size = STD_SIZE; |
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| 60 | suppress = 0; |
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| 61 | w = 0; |
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| 62 | flag = 0; |
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| 63 | l = 0; |
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| 64 | } |
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| 65 | /* Parse token */ |
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| 66 | switch(*fmt) { |
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| 67 | case '1' : |
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| 68 | case '2' : |
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| 69 | case '3' : |
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| 70 | case '4' : |
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| 71 | case '5' : |
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| 72 | case '6' : |
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| 73 | case '7' : |
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| 74 | case '8' : |
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| 75 | case '9' : |
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| 76 | case '0' : if (parsing == 1) { |
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| 77 | w = strtou(fmt,10,&base); |
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| 78 | /* We use SPACE_PAD to parse %10s |
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| 79 | commands where the number is the |
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| 80 | maximum number of char to store! |
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| 81 | */ |
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| 82 | flag |= SPACE_PAD; |
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| 83 | fmt = base-1; |
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| 84 | } |
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| 85 | break; |
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| 86 | case 'c' : c = *buf++; |
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| 87 | c_ptr = va_arg(parms, char *); |
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| 88 | *c_ptr = c; |
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| 89 | scanned++; |
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| 90 | parsing = 0; |
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| 91 | break; |
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| 92 | case 's' : c_ptr = va_arg(parms, char *); |
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| 93 | while (*buf != 0 && isspace(*buf)) buf++; |
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| 94 | l = 0; |
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| 95 | while (*buf != 0 && !isspace(*buf)) { |
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| 96 | if (!(flag & SPACE_PAD)) *c_ptr++ = *buf; |
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| 97 | else if (l < w) { |
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| 98 | *c_ptr++ = *buf; |
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| 99 | l++; |
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| 100 | } |
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| 101 | buf++; |
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| 102 | } |
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| 103 | *c_ptr = 0; |
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| 104 | scanned++; |
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| 105 | parsing = 0; |
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| 106 | break; |
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| 107 | case 'i' : |
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| 108 | case 'd' : buf = strscn(buf,"1234567890-+"); |
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| 109 | n1 = strtoi(buf,10,&base); |
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| 110 | buf = base; |
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| 111 | if (!suppress) { |
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| 112 | switch (size) { |
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| 113 | case STD_SIZE : n1b = va_arg(parms, int *); |
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| 114 | *n1b = (int)n1; |
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| 115 | break; |
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| 116 | case LONG_SIZE : n1l = va_arg(parms, long int *); |
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| 117 | *n1l = n1; |
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| 118 | break; |
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| 119 | case SHORT_SIZE : n1s = va_arg(parms, short int *); |
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| 120 | *n1s = (short)(n1); |
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| 121 | break; |
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| 122 | } |
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| 123 | scanned++; |
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| 124 | } |
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| 125 | parsing = 0; |
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| 126 | break; |
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| 127 | case 'u' : buf = strscn(buf,"1234567890"); |
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| 128 | n2 = strtou(buf,10,&base); |
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| 129 | buf = base; |
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| 130 | if (!suppress) { |
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| 131 | switch (size) { |
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| 132 | case STD_SIZE : n2b = va_arg(parms, unsigned *); |
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| 133 | *n2b = (unsigned)n2; |
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| 134 | break; |
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| 135 | case LONG_SIZE : n2l = va_arg(parms, long unsigned *); |
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| 136 | *n2l = n2; |
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| 137 | break; |
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| 138 | case SHORT_SIZE : n2s = va_arg(parms, short unsigned *); |
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| 139 | *n2s = (short)(n2); |
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| 140 | break; |
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| 141 | } |
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| 142 | scanned++; |
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| 143 | } |
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| 144 | parsing = 0; |
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| 145 | break; |
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| 146 | case 'x' : buf = strscn(buf,"1234567890xabcdefABCDEF"); |
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| 147 | n2 = strtou(buf,16,&base); |
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| 148 | buf = base; |
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| 149 | if (!suppress) { |
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| 150 | switch (size) { |
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| 151 | case STD_SIZE : n2b = va_arg(parms, unsigned *); |
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| 152 | *n2b = (unsigned)n2; |
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| 153 | break; |
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| 154 | case LONG_SIZE : n2l = va_arg(parms, long unsigned *); |
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| 155 | *n2l = n2; |
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| 156 | break; |
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| 157 | case SHORT_SIZE : n2s = va_arg(parms, short unsigned *); |
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| 158 | *n2s = (short)(n2); |
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| 159 | break; |
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| 160 | } |
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| 161 | scanned++; |
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| 162 | } |
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| 163 | parsing = 0; |
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| 164 | break; |
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| 165 | case 'f' : |
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| 166 | case 'g' : |
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| 167 | case 'e' : buf = strscn(buf,"1234567890.e+-"); |
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| 168 | n3 = strtod(buf,&base); |
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| 169 | buf = base; |
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| 170 | if (!suppress) { |
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| 171 | switch (size) { |
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| 172 | case STD_SIZE : n3l = va_arg(parms, double *); |
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| 173 | *n3l = n3; |
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| 174 | break; |
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| 175 | case LONG_SIZE : n3l = va_arg(parms, double *); |
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| 176 | *n3l = n3; |
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| 177 | break; |
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| 178 | case SHORT_SIZE : n3s = va_arg(parms, float *); |
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| 179 | *n3s = (float)(n3); |
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| 180 | break; |
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| 181 | } |
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| 182 | scanned++; |
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| 183 | } |
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| 184 | parsing = 0; |
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| 185 | break; |
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| 186 | case 'l' : size = LONG_SIZE; |
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| 187 | break; |
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| 188 | case 'h' : |
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| 189 | case 'n' : size = SHORT_SIZE; |
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| 190 | break; |
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| 191 | case '*' : suppress = 1; |
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| 192 | break; |
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| 193 | default : parsing = 0; |
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| 194 | break; |
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| 195 | } |
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| 196 | fmt++; |
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| 197 | } |
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| 198 | } |
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| 199 | return(scanned); |
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| 200 | } |
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| 201 | |||
| 202 | int sscanf(char *buf,char *fmt,...) |
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| 203 | { |
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| 204 | va_list parms; |
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| 205 | int result; |
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| 206 | va_start(parms,fmt); |
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| 207 | result = vsscanf(buf,fmt,parms); |
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| 208 | va_end(parms); |
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| 209 | return(result); |
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| 210 | } |