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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 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/i386/float.h> |
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| 26 | #include <ll/i386/mem.h> |
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| 27 | #include <ll/stdarg.h> |
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| 28 | #include <ll/ctype.h> |
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| 29 | #include <ll/math.h> |
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| 30 | #include "sprintf.h" |
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| 31 | |||
| 32 | FILE(ksprintf); |
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| 33 | |||
| 34 | #define STD_SIZE 0 |
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| 35 | #define SHORT_SIZE 1 |
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| 36 | #define LONG_SIZE 2 |
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| 37 | |||
| 38 | int vksprintf(char *buf,char *fmt,va_list parms) |
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| 39 | { |
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| 40 | int scanned = 0,w = 0,prec = 0,l = 0,size = 0; |
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| 41 | int n1 = 0; |
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| 42 | unsigned n2 = 0,parsing = 0,flag = 0; |
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| 43 | char *base = buf; |
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| 44 | char *sp = NULL; |
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| 45 | |||
| 46 | while (*fmt != 0) { |
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| 47 | if (*fmt != '%' && !parsing) { |
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| 48 | /* No token detected */ |
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| 49 | *buf++ = *fmt++; |
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| 50 | scanned++; |
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| 51 | } |
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| 52 | else { |
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| 53 | /* We need to make a conversion */ |
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| 54 | if (*fmt == '%') { |
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| 55 | fmt++; |
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| 56 | parsing = 1; |
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| 57 | w = 10; |
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| 58 | prec = 4; |
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| 59 | size = STD_SIZE; |
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| 60 | flag = 0; |
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| 61 | } |
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| 62 | /* Parse token */ |
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| 63 | switch(*fmt) { |
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| 64 | case '%' : *buf++ = '%'; |
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| 65 | scanned++; |
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| 66 | parsing = 0; |
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| 67 | break; |
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| 68 | case 'c' : *buf++ = va_arg(parms, char); |
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| 69 | scanned++; |
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| 70 | parsing = 0; |
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| 71 | break; |
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| 72 | case 'i' : |
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| 73 | case 'd' : switch (size) { |
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| 74 | case STD_SIZE : n1 = va_arg(parms, int); |
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| 75 | break; |
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| 76 | case LONG_SIZE : n1 = va_arg(parms, long int); |
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| 77 | break; |
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| 78 | case SHORT_SIZE : n1 = va_arg(parms, short int); |
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| 79 | break; |
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| 80 | } |
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| 81 | l = dcvt(n1,buf,10,w,flag); |
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| 82 | scanned += l; |
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| 83 | buf += l; |
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| 84 | parsing = 0; |
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| 85 | break; |
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| 86 | case 'u' : switch (size) { |
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| 87 | case STD_SIZE : n2 = va_arg(parms, unsigned); |
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| 88 | break; |
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| 89 | case LONG_SIZE : n2 = va_arg(parms, unsigned long); |
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| 90 | break; |
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| 91 | case SHORT_SIZE : n2 = va_arg(parms, unsigned short); |
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| 92 | break; |
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| 93 | } |
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| 94 | l = ucvt(n2,buf,10,w,flag); |
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| 95 | scanned += l; |
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| 96 | buf += l; |
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| 97 | parsing = 0; |
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| 98 | break; |
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| 99 | case 'x' : switch (size) { |
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| 100 | case STD_SIZE : n2 = va_arg(parms, unsigned); |
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| 101 | break; |
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| 102 | case LONG_SIZE : n2 = va_arg(parms, unsigned long); |
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| 103 | break; |
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| 104 | case SHORT_SIZE : n2 = va_arg(parms, unsigned short); |
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| 105 | break; |
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| 106 | } |
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| 107 | l = ucvt(n2,buf,16,w,flag); |
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| 108 | scanned += l; |
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| 109 | buf += l; |
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| 110 | parsing = 0; |
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| 111 | break; |
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| 112 | case 's' : sp = va_arg(parms, char *); |
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| 113 | while (*sp != 0) { |
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| 114 | *buf++ = *sp++; |
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| 115 | l++; |
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| 116 | } |
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| 117 | scanned += l; |
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| 118 | parsing = 0; |
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| 119 | break; |
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| 120 | case 'l' : size = LONG_SIZE; |
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| 121 | break; |
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| 122 | case 'n' : |
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| 123 | case 'h' : size = SHORT_SIZE; |
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| 124 | break; |
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| 125 | case '+' : flag |= ADD_PLUS; |
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| 126 | break; |
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| 127 | case '-' : flag |= LEFT_PAD; |
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| 128 | break; |
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| 129 | case '.' : parsing = 2; |
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| 130 | flag |= RESPECT_WIDTH; |
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| 131 | break; |
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| 132 | case '1' : |
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| 133 | case '2' : |
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| 134 | case '3' : |
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| 135 | case '4' : |
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| 136 | case '5' : |
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| 137 | case '6' : |
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| 138 | case '7' : |
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| 139 | case '8' : |
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| 140 | case '9' : |
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| 141 | case '0' : if (parsing == 1) { |
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| 142 | w = strtou(fmt,10,&base); |
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| 143 | /* MG */ |
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| 144 | /* if the first numeral is zero a ZERO pad is */ |
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| 145 | /* required */ |
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| 146 | /* but not if LEFT_PAD is set*/ |
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| 147 | if (*fmt!='0'||flag&LEFT_PAD) |
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| 148 | flag |= SPACE_PAD ; |
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| 149 | else |
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| 150 | flag |= ZERO_PAD ; |
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| 151 | fmt = base-1; |
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| 152 | } else if (parsing == 2) { |
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| 153 | prec = strtou(fmt,10,&base); |
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| 154 | fmt = base-1; |
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| 155 | parsing = 1; |
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| 156 | } |
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| 157 | break; |
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| 158 | default : parsing = 0; |
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| 159 | break; |
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| 160 | } |
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| 161 | fmt++; |
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| 162 | } |
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| 163 | } |
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| 164 | *buf = 0; |
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| 165 | return(scanned); |
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| 166 | } |
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| 167 | |||
| 168 | int ksprintf(char *buf,char *fmt,...) |
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| 169 | { |
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| 170 | va_list parms; |
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| 171 | int result; |
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| 172 | |||
| 173 | va_start(parms,fmt); |
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| 174 | result = vksprintf(buf,fmt,parms); |
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| 175 | va_end(parms); |
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| 176 | return(result); |
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| 177 | } |