| 1 | /*- |
| 2 | * Copyright (c) 1991 The Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * 3. All advertising materials mentioning features or use of this software |
| 14 | * must display the following acknowledgement: |
| 15 | * This product includes software developed by the University of |
| 16 | * California, Berkeley and its contributors. |
| 17 | * 4. Neither the name of the University nor the names of its contributors |
| 18 | * may be used to endorse or promote products derived from this software |
| 19 | * without specific prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 31 | * SUCH DAMAGE. |
| 32 | */ |
| 33 | |
| 34 | #ifndef lint |
| 35 | static char sccsid[] = "@(#)printf.c 5.4 (Berkeley) 6/16/91"; |
| 36 | #endif /* not lint */ |
| 37 | |
| 38 | /* |
| 39 | * tc.printf.c: A public-domain, minimal printf/sprintf routine that prints |
| 40 | * through the putchar() routine. Feel free to use for |
| 41 | * anything... -- 7/17/87 Paul Placeway |
| 42 | */ |
| 43 | #include <strings.h> |
| 44 | #include <stdlib.h> |
| 45 | #if __STDC__ |
| 46 | # include <stdarg.h> |
| 47 | #else |
| 48 | # include <varargs.h> |
| 49 | #endif |
| 50 | #include "csh.h" |
| 51 | #include "char.h" |
| 52 | #include "extern.h" |
| 53 | |
| 54 | #ifdef lint |
| 55 | #undef va_arg |
| 56 | #define va_arg(a, b) (a ? (b) 0 : (b) 0) |
| 57 | #endif |
| 58 | |
| 59 | #define INF 32766 /* should be bigger than any field to print */ |
| 60 | |
| 61 | static unsigned char buf[128]; |
| 62 | |
| 63 | static void |
| 64 | doprnt(addchar, sfmt, ap) |
| 65 | void (*addchar) (); |
| 66 | char *sfmt; |
| 67 | va_list ap; |
| 68 | { |
| 69 | register unsigned char *f, *bp; |
| 70 | register long l; |
| 71 | register unsigned long u; |
| 72 | register int i; |
| 73 | register int fmt; |
| 74 | register unsigned char pad = ' '; |
| 75 | int flush_left = 0, f_width = 0, prec = INF, hash = 0, do_long = 0; |
| 76 | int sign = 0; |
| 77 | |
| 78 | f = (unsigned char *) sfmt; |
| 79 | for (; *f; f++) { |
| 80 | if (*f != '%') { /* then just out the char */ |
| 81 | (*addchar) ((int) (*f)); |
| 82 | } |
| 83 | else { |
| 84 | f++; /* skip the % */ |
| 85 | |
| 86 | if (*f == '-') { /* minus: flush left */ |
| 87 | flush_left = 1; |
| 88 | f++; |
| 89 | } |
| 90 | |
| 91 | if (*f == '0' || *f == '.') { |
| 92 | /* padding with 0 rather than blank */ |
| 93 | pad = '0'; |
| 94 | f++; |
| 95 | } |
| 96 | if (*f == '*') { /* field width */ |
| 97 | f_width = va_arg(ap, int); |
| 98 | f++; |
| 99 | } |
| 100 | else if (Isdigit(*f)) { |
| 101 | f_width = atoi((char *) f); |
| 102 | while (Isdigit(*f)) |
| 103 | f++; /* skip the digits */ |
| 104 | } |
| 105 | |
| 106 | if (*f == '.') { /* precision */ |
| 107 | f++; |
| 108 | if (*f == '*') { |
| 109 | prec = va_arg(ap, int); |
| 110 | f++; |
| 111 | } |
| 112 | else if (Isdigit(*f)) { |
| 113 | prec = atoi((char *) f); |
| 114 | while (Isdigit(*f)) |
| 115 | f++; /* skip the digits */ |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | if (*f == '#') { /* alternate form */ |
| 120 | hash = 1; |
| 121 | f++; |
| 122 | } |
| 123 | |
| 124 | if (*f == 'l') { /* long format */ |
| 125 | do_long = 1; |
| 126 | f++; |
| 127 | } |
| 128 | |
| 129 | fmt = *f; |
| 130 | if (Isupper(fmt)) { |
| 131 | do_long = 1; |
| 132 | fmt = Tolower(fmt); |
| 133 | } |
| 134 | bp = buf; |
| 135 | switch (fmt) { /* do the format */ |
| 136 | case 'd': |
| 137 | if (do_long) |
| 138 | l = va_arg(ap, long); |
| 139 | else |
| 140 | l = (long) (va_arg(ap, int)); |
| 141 | if (l < 0) { |
| 142 | sign = 1; |
| 143 | l = -l; |
| 144 | } |
| 145 | do { |
| 146 | *bp++ = l % 10 + '0'; |
| 147 | } while ((l /= 10) > 0); |
| 148 | if (sign) |
| 149 | *bp++ = '-'; |
| 150 | f_width = f_width - (bp - buf); |
| 151 | if (!flush_left) |
| 152 | while (f_width-- > 0) |
| 153 | (*addchar) ((int) (pad)); |
| 154 | for (bp--; bp >= buf; bp--) |
| 155 | (*addchar) ((int) (*bp)); |
| 156 | if (flush_left) |
| 157 | while (f_width-- > 0) |
| 158 | (*addchar) ((int) (' ')); |
| 159 | break; |
| 160 | |
| 161 | case 'o': |
| 162 | case 'x': |
| 163 | case 'u': |
| 164 | if (do_long) |
| 165 | u = va_arg(ap, unsigned long); |
| 166 | else |
| 167 | u = (unsigned long) (va_arg(ap, unsigned)); |
| 168 | if (fmt == 'u') { /* unsigned decimal */ |
| 169 | do { |
| 170 | *bp++ = u % 10 + '0'; |
| 171 | } while ((u /= 10) > 0); |
| 172 | } |
| 173 | else if (fmt == 'o') { /* octal */ |
| 174 | do { |
| 175 | *bp++ = u % 8 + '0'; |
| 176 | } while ((u /= 8) > 0); |
| 177 | if (hash) |
| 178 | *bp++ = '0'; |
| 179 | } |
| 180 | else if (fmt == 'x') { /* hex */ |
| 181 | do { |
| 182 | i = u % 16; |
| 183 | if (i < 10) |
| 184 | *bp++ = i + '0'; |
| 185 | else |
| 186 | *bp++ = i - 10 + 'a'; |
| 187 | } while ((u /= 16) > 0); |
| 188 | if (hash) { |
| 189 | *bp++ = 'x'; |
| 190 | *bp++ = '0'; |
| 191 | } |
| 192 | } |
| 193 | i = f_width - (bp - buf); |
| 194 | if (!flush_left) |
| 195 | while (i-- > 0) |
| 196 | (*addchar) ((int) (pad)); |
| 197 | for (bp--; bp >= buf; bp--) |
| 198 | (*addchar) ((int) (*bp)); |
| 199 | if (flush_left) |
| 200 | while (i-- > 0) |
| 201 | (*addchar) ((int) (' ')); |
| 202 | break; |
| 203 | |
| 204 | |
| 205 | case 'c': |
| 206 | i = va_arg(ap, int); |
| 207 | (*addchar) ((int) (i)); |
| 208 | break; |
| 209 | |
| 210 | case 's': |
| 211 | bp = va_arg(ap, unsigned char *); |
| 212 | if (!bp) |
| 213 | bp = (unsigned char *) "(nil)"; |
| 214 | f_width = f_width - strlen((char *) bp); |
| 215 | if (!flush_left) |
| 216 | while (f_width-- > 0) |
| 217 | (*addchar) ((int) (pad)); |
| 218 | for (i = 0; *bp && i < prec; i++) { |
| 219 | (*addchar) ((int) (*bp)); |
| 220 | bp++; |
| 221 | } |
| 222 | if (flush_left) |
| 223 | while (f_width-- > 0) |
| 224 | (*addchar) ((int) (' ')); |
| 225 | |
| 226 | break; |
| 227 | |
| 228 | case '%': |
| 229 | (*addchar) ((int) ('%')); |
| 230 | break; |
| 231 | } |
| 232 | flush_left = 0, f_width = 0, prec = INF, hash = 0, do_long = 0; |
| 233 | sign = 0; |
| 234 | pad = ' '; |
| 235 | } |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | |
| 240 | static unsigned char *xstring; |
| 241 | static void |
| 242 | xaddchar(c) |
| 243 | int c; |
| 244 | { |
| 245 | *xstring++ = c; |
| 246 | } |
| 247 | |
| 248 | |
| 249 | void |
| 250 | #if __STDC__ |
| 251 | xsprintf(char *str, char *fmt, ...) |
| 252 | #else |
| 253 | xsprintf(str, fmt, va_alist) |
| 254 | char *str; |
| 255 | char *fmt; |
| 256 | va_dcl |
| 257 | #endif |
| 258 | { |
| 259 | va_list va; |
| 260 | |
| 261 | #if __STDC__ |
| 262 | va_start(va, fmt); |
| 263 | #else |
| 264 | va_start(va); |
| 265 | #endif |
| 266 | xstring = (unsigned char *) str; |
| 267 | doprnt(xaddchar, fmt, va); |
| 268 | va_end(va); |
| 269 | *xstring++ = '\0'; |
| 270 | } |
| 271 | |
| 272 | |
| 273 | void |
| 274 | #if __STDC__ |
| 275 | xprintf(char *fmt, ...) |
| 276 | #else |
| 277 | xprintf(fmt, va_alist) |
| 278 | char *fmt; |
| 279 | va_dcl |
| 280 | #endif |
| 281 | { |
| 282 | va_list va; |
| 283 | |
| 284 | #if __STDC__ |
| 285 | va_start(va, fmt); |
| 286 | #else |
| 287 | va_start(va); |
| 288 | #endif |
| 289 | doprnt(xputchar, fmt, va); |
| 290 | va_end(va); |
| 291 | } |
| 292 | |
| 293 | |
| 294 | void |
| 295 | xvprintf(fmt, va) |
| 296 | char *fmt; |
| 297 | va_list va; |
| 298 | { |
| 299 | doprnt(xputchar, fmt, va); |
| 300 | } |
| 301 | |
| 302 | void |
| 303 | xvsprintf(str, fmt, va) |
| 304 | char *str; |
| 305 | char *fmt; |
| 306 | va_list va; |
| 307 | { |
| 308 | xstring = (unsigned char *) str; |
| 309 | doprnt(xaddchar, fmt, va); |
| 310 | *xstring++ = '\0'; |
| 311 | } |