| 1 | /* Provide a version of _doprnt in terms of fprintf. |
| 2 | Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. |
| 3 | Contributed by Kaveh Ghazi (ghazi@caip.rutgers.edu) 3/29/98 |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify it |
| 6 | under the terms of the GNU General Public License as published by the |
| 7 | Free Software Foundation; either version 2, or (at your option) any |
| 8 | later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program; if not, write to the Free Software |
| 17 | Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
| 18 | |
| 19 | #include "config.h" |
| 20 | #include "ansidecl.h" |
| 21 | #include "safe-ctype.h" |
| 22 | |
| 23 | #include <stdio.h> |
| 24 | #include <stdarg.h> |
| 25 | #ifdef HAVE_STRING_H |
| 26 | #include <string.h> |
| 27 | #endif |
| 28 | #ifdef HAVE_STDLIB_H |
| 29 | #include <stdlib.h> |
| 30 | #endif |
| 31 | |
| 32 | #undef _doprnt |
| 33 | |
| 34 | #ifdef HAVE__DOPRNT |
| 35 | #define TEST |
| 36 | #endif |
| 37 | |
| 38 | #ifdef TEST /* Make sure to use the internal one. */ |
| 39 | #define _doprnt my_doprnt |
| 40 | #endif |
| 41 | |
| 42 | #define COPY_VA_INT \ |
| 43 | do { \ |
| 44 | const int value = abs (va_arg (ap, int)); \ |
| 45 | char buf[32]; \ |
| 46 | ptr++; /* Go past the asterisk. */ \ |
| 47 | *sptr = '\0'; /* NULL terminate sptr. */ \ |
| 48 | sprintf(buf, "%d", value); \ |
| 49 | strcat(sptr, buf); \ |
| 50 | while (*sptr) sptr++; \ |
| 51 | } while (0) |
| 52 | |
| 53 | #define PRINT_CHAR(CHAR) \ |
| 54 | do { \ |
| 55 | putc(CHAR, stream); \ |
| 56 | ptr++; \ |
| 57 | total_printed++; \ |
| 58 | continue; \ |
| 59 | } while (0) |
| 60 | |
| 61 | #define PRINT_TYPE(TYPE) \ |
| 62 | do { \ |
| 63 | int result; \ |
| 64 | TYPE value = va_arg (ap, TYPE); \ |
| 65 | *sptr++ = *ptr++; /* Copy the type specifier. */ \ |
| 66 | *sptr = '\0'; /* NULL terminate sptr. */ \ |
| 67 | result = fprintf(stream, specifier, value); \ |
| 68 | if (result == -1) \ |
| 69 | return -1; \ |
| 70 | else \ |
| 71 | { \ |
| 72 | total_printed += result; \ |
| 73 | continue; \ |
| 74 | } \ |
| 75 | } while (0) |
| 76 | |
| 77 | int |
| 78 | _doprnt (const char *format, va_list ap, FILE *stream) |
| 79 | { |
| 80 | const char * ptr = format; |
| 81 | char specifier[128]; |
| 82 | int total_printed = 0; |
| 83 | |
| 84 | while (*ptr != '\0') |
| 85 | { |
| 86 | if (*ptr != '%') /* While we have regular characters, print them. */ |
| 87 | PRINT_CHAR(*ptr); |
| 88 | else /* We got a format specifier! */ |
| 89 | { |
| 90 | char * sptr = specifier; |
| 91 | int wide_width = 0, short_width = 0; |
| 92 | |
| 93 | *sptr++ = *ptr++; /* Copy the % and move forward. */ |
| 94 | |
| 95 | while (strchr ("-+ #0", *ptr)) /* Move past flags. */ |
| 96 | *sptr++ = *ptr++; |
| 97 | |
| 98 | if (*ptr == '*') |
| 99 | COPY_VA_INT; |
| 100 | else |
| 101 | while (ISDIGIT(*ptr)) /* Handle explicit numeric value. */ |
| 102 | *sptr++ = *ptr++; |
| 103 | |
| 104 | if (*ptr == '.') |
| 105 | { |
| 106 | *sptr++ = *ptr++; /* Copy and go past the period. */ |
| 107 | if (*ptr == '*') |
| 108 | COPY_VA_INT; |
| 109 | else |
| 110 | while (ISDIGIT(*ptr)) /* Handle explicit numeric value. */ |
| 111 | *sptr++ = *ptr++; |
| 112 | } |
| 113 | while (strchr ("hlL", *ptr)) |
| 114 | { |
| 115 | switch (*ptr) |
| 116 | { |
| 117 | case 'h': |
| 118 | short_width = 1; |
| 119 | break; |
| 120 | case 'l': |
| 121 | wide_width++; |
| 122 | break; |
| 123 | case 'L': |
| 124 | wide_width = 2; |
| 125 | break; |
| 126 | default: |
| 127 | abort(); |
| 128 | } |
| 129 | *sptr++ = *ptr++; |
| 130 | } |
| 131 | |
| 132 | switch (*ptr) |
| 133 | { |
| 134 | case 'd': |
| 135 | case 'i': |
| 136 | case 'o': |
| 137 | case 'u': |
| 138 | case 'x': |
| 139 | case 'X': |
| 140 | case 'c': |
| 141 | { |
| 142 | /* Short values are promoted to int, so just copy it |
| 143 | as an int and trust the C library printf to cast it |
| 144 | to the right width. */ |
| 145 | if (short_width) |
| 146 | PRINT_TYPE(int); |
| 147 | else |
| 148 | { |
| 149 | switch (wide_width) |
| 150 | { |
| 151 | case 0: |
| 152 | PRINT_TYPE(int); |
| 153 | break; |
| 154 | case 1: |
| 155 | PRINT_TYPE(long); |
| 156 | break; |
| 157 | case 2: |
| 158 | default: |
| 159 | #if defined(__GNUC__) || defined(HAVE_LONG_LONG) |
| 160 | PRINT_TYPE(long long); |
| 161 | #else |
| 162 | PRINT_TYPE(long); /* Fake it and hope for the best. */ |
| 163 | #endif |
| 164 | break; |
| 165 | } /* End of switch (wide_width) */ |
| 166 | } /* End of else statement */ |
| 167 | } /* End of integer case */ |
| 168 | break; |
| 169 | case 'f': |
| 170 | case 'e': |
| 171 | case 'E': |
| 172 | case 'g': |
| 173 | case 'G': |
| 174 | { |
| 175 | if (wide_width == 0) |
| 176 | PRINT_TYPE(double); |
| 177 | else |
| 178 | { |
| 179 | #if defined(__GNUC__) || defined(HAVE_LONG_DOUBLE) |
| 180 | PRINT_TYPE(long double); |
| 181 | #else |
| 182 | PRINT_TYPE(double); /* Fake it and hope for the best. */ |
| 183 | #endif |
| 184 | } |
| 185 | } |
| 186 | break; |
| 187 | case 's': |
| 188 | PRINT_TYPE(char *); |
| 189 | break; |
| 190 | case 'p': |
| 191 | PRINT_TYPE(void *); |
| 192 | break; |
| 193 | case '%': |
| 194 | PRINT_CHAR('%'); |
| 195 | break; |
| 196 | default: |
| 197 | abort(); |
| 198 | } /* End of switch (*ptr) */ |
| 199 | } /* End of else statement */ |
| 200 | } |
| 201 | |
| 202 | return total_printed; |
| 203 | } |
| 204 | |
| 205 | #ifdef TEST |
| 206 | |
| 207 | #include <math.h> |
| 208 | #ifndef M_PI |
| 209 | #define M_PI (3.1415926535897932385) |
| 210 | #endif |
| 211 | |
| 212 | #define RESULT(x) do \ |
| 213 | { \ |
| 214 | int i = (x); \ |
| 215 | printf ("printed %d characters\n", i); \ |
| 216 | fflush(stdin); \ |
| 217 | } while (0) |
| 218 | |
| 219 | static int checkit (const char * format, ...) ATTRIBUTE_PRINTF_1; |
| 220 | |
| 221 | static int |
| 222 | checkit (const char* format, ...) |
| 223 | { |
| 224 | int result; |
| 225 | VA_OPEN (args, format); |
| 226 | VA_FIXEDARG (args, char *, format); |
| 227 | |
| 228 | result = _doprnt (format, args, stdout); |
| 229 | VA_CLOSE (args); |
| 230 | |
| 231 | return result; |
| 232 | } |
| 233 | |
| 234 | int |
| 235 | main (void) |
| 236 | { |
| 237 | RESULT(checkit ("<%d>\n", 0x12345678)); |
| 238 | RESULT(printf ("<%d>\n", 0x12345678)); |
| 239 | |
| 240 | RESULT(checkit ("<%200d>\n", 5)); |
| 241 | RESULT(printf ("<%200d>\n", 5)); |
| 242 | |
| 243 | RESULT(checkit ("<%.300d>\n", 6)); |
| 244 | RESULT(printf ("<%.300d>\n", 6)); |
| 245 | |
| 246 | RESULT(checkit ("<%100.150d>\n", 7)); |
| 247 | RESULT(printf ("<%100.150d>\n", 7)); |
| 248 | |
| 249 | RESULT(checkit ("<%s>\n", |
| 250 | "jjjjjjjjjiiiiiiiiiiiiiiioooooooooooooooooppppppppppppaa\n\ |
| 251 | 777777777777777777333333333333366666666666622222222222777777777777733333")); |
| 252 | RESULT(printf ("<%s>\n", |
| 253 | "jjjjjjjjjiiiiiiiiiiiiiiioooooooooooooooooppppppppppppaa\n\ |
| 254 | 777777777777777777333333333333366666666666622222222222777777777777733333")); |
| 255 | |
| 256 | RESULT(checkit ("<%f><%0+#f>%s%d%s>\n", |
| 257 | 1.0, 1.0, "foo", 77, "asdjffffffffffffffiiiiiiiiiiixxxxx")); |
| 258 | RESULT(printf ("<%f><%0+#f>%s%d%s>\n", |
| 259 | 1.0, 1.0, "foo", 77, "asdjffffffffffffffiiiiiiiiiiixxxxx")); |
| 260 | |
| 261 | RESULT(checkit ("<%4f><%.4f><%%><%4.4f>\n", M_PI, M_PI, M_PI)); |
| 262 | RESULT(printf ("<%4f><%.4f><%%><%4.4f>\n", M_PI, M_PI, M_PI)); |
| 263 | |
| 264 | RESULT(checkit ("<%*f><%.*f><%%><%*.*f>\n", 3, M_PI, 3, M_PI, 3, 3, M_PI)); |
| 265 | RESULT(printf ("<%*f><%.*f><%%><%*.*f>\n", 3, M_PI, 3, M_PI, 3, 3, M_PI)); |
| 266 | |
| 267 | RESULT(checkit ("<%d><%i><%o><%u><%x><%X><%c>\n", |
| 268 | 75, 75, 75, 75, 75, 75, 75)); |
| 269 | RESULT(printf ("<%d><%i><%o><%u><%x><%X><%c>\n", |
| 270 | 75, 75, 75, 75, 75, 75, 75)); |
| 271 | |
| 272 | RESULT(checkit ("<%d><%i><%o><%u><%x><%X><%c>\n", |
| 273 | 75, 75, 75, 75, 75, 75, 75)); |
| 274 | RESULT(printf ("<%d><%i><%o><%u><%x><%X><%c>\n", |
| 275 | 75, 75, 75, 75, 75, 75, 75)); |
| 276 | |
| 277 | RESULT(checkit ("Testing (hd) short: <%d><%ld><%hd><%hd><%d>\n", 123, (long)234, 345, 123456789, 456)); |
| 278 | RESULT(printf ("Testing (hd) short: <%d><%ld><%hd><%hd><%d>\n", 123, (long)234, 345, 123456789, 456)); |
| 279 | |
| 280 | #if defined(__GNUC__) || defined (HAVE_LONG_LONG) |
| 281 | RESULT(checkit ("Testing (lld) long long: <%d><%lld><%d>\n", 123, 234234234234234234LL, 345)); |
| 282 | RESULT(printf ("Testing (lld) long long: <%d><%lld><%d>\n", 123, 234234234234234234LL, 345)); |
| 283 | RESULT(checkit ("Testing (Ld) long long: <%d><%Ld><%d>\n", 123, 234234234234234234LL, 345)); |
| 284 | RESULT(printf ("Testing (Ld) long long: <%d><%Ld><%d>\n", 123, 234234234234234234LL, 345)); |
| 285 | #endif |
| 286 | |
| 287 | #if defined(__GNUC__) || defined (HAVE_LONG_DOUBLE) |
| 288 | RESULT(checkit ("Testing (Lf) long double: <%.20f><%.20Lf><%0+#.20f>\n", |
| 289 | 1.23456, 1.234567890123456789L, 1.23456)); |
| 290 | RESULT(printf ("Testing (Lf) long double: <%.20f><%.20Lf><%0+#.20f>\n", |
| 291 | 1.23456, 1.234567890123456789L, 1.23456)); |
| 292 | #endif |
| 293 | |
| 294 | return 0; |
| 295 | } |
| 296 | #endif /* TEST */ |