| 1 | /* |
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| 2 | This file is part of MutekP. |
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| 3 | |
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| 4 | MutekP is free software; you can redistribute it and/or modify it |
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| 5 | under the terms of the GNU General Public License as published by |
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| 6 | the Free Software Foundation; either version 2 of the License, or |
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| 7 | (at your option) any later version. |
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| 8 | |
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| 9 | MutekP is distributed in the hope that it will be useful, but |
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| 10 | WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU General Public License |
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| 15 | along with MutekP; if not, write to the Free Software Foundation, |
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| 16 | Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 17 | |
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| 18 | UPMC / LIP6 / SOC (c) 2007 |
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| 19 | */ |
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| 20 | |
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| 21 | /* |
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| 22 | * stdio of the ghost of libc |
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| 23 | * Developped by Denis Hommais and Frédéric Pétrot |
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| 24 | * $Log: iprintf.c,v $ |
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| 25 | * Revision 1.2 2003/07/01 13:40:46 fred |
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| 26 | Supports the %u and doesnt core anymore on an unrecognized char |
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| 27 | following a % |
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| 28 | * Revision 1.1.1.1 2002/02/28 12:58:56 disydent |
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| 29 | Creation of Disydent CVS Tree |
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| 30 | * Revision 1.1 2001/11/22 15:07:36 fred |
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| 31 | Adding the iprintf function that does the formatting, and removes all |
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| 32 | the old stuff hanging around. |
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| 33 | * $Id: iprintf.c,v 1.2 2003/07/01 13:40:46 fred Exp $ |
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| 34 | Made up this file to centralize the printf behavior |
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| 35 | */ |
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| 36 | |
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| 37 | |
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| 38 | #include <stdarg.h> |
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| 39 | #include <stdio.h> |
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| 40 | |
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| 41 | /* |
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| 42 | * Handling of the printf internals |
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| 43 | * Addr is either the buffer or the tty addrs |
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| 44 | * inc is 0 for a tty and 1 for a buffer |
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| 45 | * Other arguments are self explanatory |
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| 46 | */ |
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| 47 | #define SIZE_OF_BUF 16 |
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| 48 | int iprintf (char *addr, int inc, const char *fmt, va_list ap) |
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| 49 | { |
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| 50 | register char *tmp; |
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| 51 | int val, i = 0, count = 0; |
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| 52 | char buf[SIZE_OF_BUF], *xdigit; |
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| 53 | |
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| 54 | while (*fmt) |
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| 55 | { |
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| 56 | while ((*fmt != '%') && (*fmt)) |
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| 57 | { |
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| 58 | *addr = *fmt++; |
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| 59 | addr += inc; |
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| 60 | count++; |
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| 61 | } |
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| 62 | if (*fmt) |
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| 63 | { |
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| 64 | fmt++; |
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| 65 | switch (*fmt) |
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| 66 | { |
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| 67 | case '%': |
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| 68 | *addr = '%'; |
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| 69 | addr += inc; |
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| 70 | count++; |
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| 71 | goto next; |
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| 72 | case 'c': |
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| 73 | *addr = va_arg (ap, int); |
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| 74 | addr += inc; |
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| 75 | count++; |
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| 76 | goto next; |
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| 77 | case 'd': |
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| 78 | case 'i': |
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| 79 | val = va_arg (ap, int); |
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| 80 | if (val < 0) |
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| 81 | { |
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| 82 | val = -val; |
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| 83 | *addr = '-'; |
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| 84 | addr += inc; |
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| 85 | count++; |
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| 86 | } |
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| 87 | tmp = buf + SIZE_OF_BUF; |
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| 88 | *--tmp = '\0'; |
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| 89 | do |
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| 90 | { |
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| 91 | *--tmp = val % 10 + '0'; |
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| 92 | val /= 10; |
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| 93 | } |
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| 94 | while (val); |
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| 95 | break; |
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| 96 | case 'u': |
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| 97 | val = va_arg (ap, unsigned int); |
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| 98 | tmp = buf + SIZE_OF_BUF; |
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| 99 | *--tmp = '\0'; |
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| 100 | do |
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| 101 | { |
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| 102 | *--tmp = val % 10 + '0'; |
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| 103 | val /= 10; |
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| 104 | } |
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| 105 | while (val); |
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| 106 | break; |
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| 107 | case 'o': |
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| 108 | val = va_arg (ap, int); |
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| 109 | tmp = buf + SIZE_OF_BUF; |
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| 110 | *--tmp = '\0'; |
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| 111 | do |
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| 112 | { |
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| 113 | *--tmp = (val & 7) + '0'; |
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| 114 | val = (unsigned int) val >> 3; |
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| 115 | } |
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| 116 | while (val); |
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| 117 | break; |
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| 118 | case 's': |
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| 119 | tmp = va_arg (ap, char *); |
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| 120 | if (!tmp) |
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| 121 | tmp = "empty str"; |
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| 122 | break; |
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| 123 | case 'p': |
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| 124 | case 'x': |
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| 125 | case 'X': |
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| 126 | val = va_arg (ap, int); |
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| 127 | tmp = buf + SIZE_OF_BUF; |
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| 128 | *--tmp = '\0'; |
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| 129 | if (*fmt != 'X') |
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| 130 | xdigit = "0123456789abcdef"; |
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| 131 | else |
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| 132 | xdigit = "0123456789ABCDEF"; |
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| 133 | do |
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| 134 | { |
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| 135 | *--tmp = xdigit[val & 15]; |
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| 136 | val = (unsigned int) val >> 4; |
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| 137 | i++; |
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| 138 | } |
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| 139 | while (val); |
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| 140 | if (*fmt == 'p') |
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| 141 | while (i < 8) |
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| 142 | { |
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| 143 | *--tmp = xdigit[0]; |
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| 144 | i++; |
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| 145 | } |
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| 146 | break; |
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| 147 | default: |
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| 148 | *addr = *fmt; |
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| 149 | count++; |
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| 150 | goto next; |
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| 151 | } |
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| 152 | while (*tmp) |
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| 153 | { |
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| 154 | *addr = *tmp++; |
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| 155 | addr += inc; |
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| 156 | count++; |
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| 157 | } |
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| 158 | next: |
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| 159 | fmt++; |
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| 160 | } |
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| 161 | } |
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| 162 | va_end (ap); |
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| 163 | return count; |
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| 164 | } |
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| 165 | |
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