| 1 | /*-␊ |
| 2 | * Copyright (c) 1990, 1993␊ |
| 3 | *␉The Regents of the University of California. All rights reserved.␊ |
| 4 | *␊ |
| 5 | * This code is derived from software contributed to Berkeley by␊ |
| 6 | * Chris Torek.␊ |
| 7 | *␊ |
| 8 | * Redistribution and use in source and binary forms, with or without␊ |
| 9 | * modification, are permitted provided that the following conditions␊ |
| 10 | * are met:␊ |
| 11 | * 1. Redistributions of source code must retain the above copyright␊ |
| 12 | * notice, this list of conditions and the following disclaimer.␊ |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright␊ |
| 14 | * notice, this list of conditions and the following disclaimer in the␊ |
| 15 | * documentation and/or other materials provided with the distribution.␊ |
| 16 | * 3. All advertising materials mentioning features or use of this software␊ |
| 17 | * must display the following acknowledgement:␊ |
| 18 | *␉This product includes software developed by the University of␊ |
| 19 | *␉California, Berkeley and its contributors.␊ |
| 20 | * 4. Neither the name of the University nor the names of its contributors␊ |
| 21 | * may be used to endorse or promote products derived from this software␊ |
| 22 | * without specific prior written permission.␊ |
| 23 | *␊ |
| 24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND␊ |
| 25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE␊ |
| 26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE␊ |
| 27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE␊ |
| 28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL␊ |
| 29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS␊ |
| 30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)␊ |
| 31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT␊ |
| 32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY␊ |
| 33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF␊ |
| 34 | * SUCH DAMAGE.␊ |
| 35 | */␊ |
| 36 | ␊ |
| 37 | #if defined(LIBC_SCCS) && !defined(lint)␊ |
| 38 | #if 0␊ |
| 39 | static char sccsid[] = "@(#)vfprintf.c␉8.1 (Berkeley) 6/4/93";␊ |
| 40 | #endif␊ |
| 41 | static const char rcsid[] =␊ |
| 42 | "$FreeBSD: src/lib/libc/stdio/vfprintf.c,v 1.22.2.6 2012/11/17 07:23:37 svnexp Exp $";␊ |
| 43 | #endif /* LIBC_SCCS and not lint */␊ |
| 44 | ␊ |
| 45 | /*␊ |
| 46 | * Actual printf innards.␊ |
| 47 | *␊ |
| 48 | * This code is large and complicated...␊ |
| 49 | */␊ |
| 50 | ␊ |
| 51 | #include "namespace.h"␊ |
| 52 | #include <sys/types.h>␊ |
| 53 | ␊ |
| 54 | #include <ctype.h>␊ |
| 55 | #include <limits.h>␊ |
| 56 | #include <locale.h>␊ |
| 57 | #include <stddef.h>␊ |
| 58 | #include <stdint.h>␊ |
| 59 | #include <stdio.h>␊ |
| 60 | #include <stdlib.h>␊ |
| 61 | #include <string.h>␊ |
| 62 | #if __STDC__␊ |
| 63 | #include <stdarg.h>␊ |
| 64 | #else␊ |
| 65 | #include <varargs.h>␊ |
| 66 | #endif␊ |
| 67 | #include <errno.h>␊ |
| 68 | #include "un-namespace.h"␊ |
| 69 | #include "local.h"␊ |
| 70 | #include "fvwrite.h"␊ |
| 71 | #include "printflocal.h"␊ |
| 72 | ␊ |
| 73 | static int␉__sprint __P((FILE *, struct __suio *));␊ |
| 74 | static int␉__sbprintf __P((FILE *, const char *, va_list));␊ |
| 75 | static char *␉__ultoa __P((u_long, char *, int, int, char *));␊ |
| 76 | static char *␉__uqtoa __P((u_quad_t, char *, int, int, char *));␊ |
| 77 | ␊ |
| 78 | /*␊ |
| 79 | * Flush out all the vectors defined by the given uio,␊ |
| 80 | * then reset it so that it can be reused.␊ |
| 81 | */␊ |
| 82 | static int␊ |
| 83 | __sprint(FILE *fp, struct __suio *uio)␊ |
| 84 | {␊ |
| 85 | ␉int err;␊ |
| 86 | ␊ |
| 87 | ␉if (uio->uio_resid == 0) {␊ |
| 88 | ␉␉uio->uio_iovcnt = 0;␊ |
| 89 | ␉␉return (0);␊ |
| 90 | ␉}␊ |
| 91 | ␉err = __sfvwrite(fp, uio);␊ |
| 92 | ␉uio->uio_resid = 0;␊ |
| 93 | ␉uio->uio_iovcnt = 0;␊ |
| 94 | ␉return (err);␊ |
| 95 | }␊ |
| 96 | ␊ |
| 97 | /*␊ |
| 98 | * Helper function for `fprintf to unbuffered unix file': creates a␊ |
| 99 | * temporary buffer. We only work on write-only files; this avoids␊ |
| 100 | * worries about ungetc buffers and so forth.␊ |
| 101 | */␊ |
| 102 | static int␊ |
| 103 | __sbprintf(FILE *fp, const char *fmt, va_list ap)␊ |
| 104 | {␊ |
| 105 | ␉int ret;␊ |
| 106 | ␉FILE fake;␊ |
| 107 | ␉unsigned char buf[BUFSIZ];␊ |
| 108 | ␊ |
| 109 | ␉/* copy the important variables */␊ |
| 110 | ␉fake._flags = fp->_flags & ~__SNBF;␊ |
| 111 | ␉fake._file = fp->_file;␊ |
| 112 | ␉fake._cookie = fp->_cookie;␊ |
| 113 | ␉fake._write = fp->_write;␊ |
| 114 | ␊ |
| 115 | ␉/* set up the buffer */␊ |
| 116 | ␉fake._bf._base = fake._p = buf;␊ |
| 117 | ␉fake._bf._size = fake._w = sizeof(buf);␊ |
| 118 | ␉fake._lbfsize = 0;␉/* not actually used, but Just In Case */␊ |
| 119 | ␊ |
| 120 | ␉/* do the work, then copy any error status */␊ |
| 121 | ␉ret = vfprintf(&fake, fmt, ap);␊ |
| 122 | ␉if (ret >= 0 && fflush(&fake))␊ |
| 123 | ␉␉ret = EOF;␊ |
| 124 | ␉if (fake._flags & __SERR)␊ |
| 125 | ␉␉fp->_flags |= __SERR;␊ |
| 126 | ␉return (ret);␊ |
| 127 | }␊ |
| 128 | ␊ |
| 129 | /*␊ |
| 130 | * Macros for converting digits to letters and vice versa␊ |
| 131 | */␊ |
| 132 | #define␉to_digit(c)␉((c) - '0')␊ |
| 133 | #define is_digit(c)␉((unsigned)to_digit(c) <= 9)␊ |
| 134 | #define␉to_char(n)␉((n) + '0')␊ |
| 135 | ␊ |
| 136 | /*␊ |
| 137 | * Convert an unsigned long to ASCII for printf purposes, returning␊ |
| 138 | * a pointer to the first character of the string representation.␊ |
| 139 | * Octal numbers can be forced to have a leading zero; hex numbers␊ |
| 140 | * use the given digits.␊ |
| 141 | */␊ |
| 142 | static char *␊ |
| 143 | __ultoa(u_long val, char *endp, int base, int octzero, char *xdigs)␊ |
| 144 | {␊ |
| 145 | ␉register char *cp = endp;␊ |
| 146 | ␉register long sval;␊ |
| 147 | ␊ |
| 148 | ␉/*␊ |
| 149 | ␉ * Handle the three cases separately, in the hope of getting␊ |
| 150 | ␉ * better/faster code.␊ |
| 151 | ␉ */␊ |
| 152 | ␉switch (base) {␊ |
| 153 | case 10:␊ |
| 154 | if (val < 10) {␉/* many numbers are 1 digit */␊ |
| 155 | *--cp = to_char(val);␊ |
| 156 | return (cp);␊ |
| 157 | }␊ |
| 158 | /*␊ |
| 159 | * On many machines, unsigned arithmetic is harder than␊ |
| 160 | * signed arithmetic, so we do at most one unsigned mod and␊ |
| 161 | * divide; this is sufficient to reduce the range of␊ |
| 162 | * the incoming value to where signed arithmetic works.␊ |
| 163 | */␊ |
| 164 | if (val > LONG_MAX) {␊ |
| 165 | *--cp = to_char(val % 10);␊ |
| 166 | sval = val / 10;␊ |
| 167 | } else␊ |
| 168 | sval = val;␊ |
| 169 | do {␊ |
| 170 | *--cp = to_char(sval % 10);␊ |
| 171 | sval /= 10;␊ |
| 172 | } while (sval != 0);␊ |
| 173 | break;␊ |
| 174 | ␊ |
| 175 | case 8:␊ |
| 176 | do {␊ |
| 177 | *--cp = to_char(val & 7);␊ |
| 178 | val >>= 3;␊ |
| 179 | } while (val);␊ |
| 180 | if (octzero && *cp != '0')␊ |
| 181 | *--cp = '0';␊ |
| 182 | break;␊ |
| 183 | ␊ |
| 184 | case 16:␊ |
| 185 | do {␊ |
| 186 | *--cp = xdigs[val & 15];␊ |
| 187 | val >>= 4;␊ |
| 188 | } while (val);␊ |
| 189 | break;␊ |
| 190 | ␊ |
| 191 | default:␉␉␉/* oops */␊ |
| 192 | abort();␊ |
| 193 | ␉}␊ |
| 194 | ␉return (cp);␊ |
| 195 | }␊ |
| 196 | ␊ |
| 197 | /* Identical to __ultoa, but for quads. */␊ |
| 198 | static char *␊ |
| 199 | __uqtoa(u_quad_t val, char *endp, int base, int octzero, char *xdigs)␊ |
| 200 | {␊ |
| 201 | ␉char *cp = endp;␊ |
| 202 | ␉quad_t sval;␊ |
| 203 | ␊ |
| 204 | ␉/* quick test for small values; __ultoa is typically much faster */␊ |
| 205 | ␉/* (perhaps instead we should run until small, then call __ultoa?) */␊ |
| 206 | ␉if (val <= ULONG_MAX)␊ |
| 207 | ␉␉return (__ultoa((u_long)val, endp, base, octzero, xdigs));␊ |
| 208 | ␉switch (base) {␊ |
| 209 | case 10:␊ |
| 210 | if (val < 10) {␊ |
| 211 | *--cp = to_char(val % 10);␊ |
| 212 | return (cp);␊ |
| 213 | }␊ |
| 214 | if (val > QUAD_MAX) {␊ |
| 215 | *--cp = to_char(val % 10);␊ |
| 216 | sval = val / 10;␊ |
| 217 | } else␊ |
| 218 | sval = val;␊ |
| 219 | do {␊ |
| 220 | *--cp = to_char(sval % 10);␊ |
| 221 | sval /= 10;␊ |
| 222 | } while (sval != 0);␊ |
| 223 | break;␊ |
| 224 | ␊ |
| 225 | case 8:␊ |
| 226 | do {␊ |
| 227 | *--cp = to_char(val & 7);␊ |
| 228 | val >>= 3;␊ |
| 229 | } while (val);␊ |
| 230 | if (octzero && *cp != '0')␊ |
| 231 | *--cp = '0';␊ |
| 232 | break;␊ |
| 233 | ␊ |
| 234 | case 16:␊ |
| 235 | do {␊ |
| 236 | *--cp = xdigs[val & 15];␊ |
| 237 | val >>= 4;␊ |
| 238 | } while (val);␊ |
| 239 | break;␊ |
| 240 | ␊ |
| 241 | default:␊ |
| 242 | abort();␊ |
| 243 | ␉}␊ |
| 244 | ␉return (cp);␊ |
| 245 | }␊ |
| 246 | ␊ |
| 247 | #ifndef NO_FLOATING_POINT␊ |
| 248 | ␊ |
| 249 | ␊ |
| 250 | #else /* no FLOATING_POINT */␊ |
| 251 | ␊ |
| 252 | #define␉BUF␉␉68␊ |
| 253 | ␊ |
| 254 | #endif /* FLOATING_POINT */␊ |
| 255 | ␊ |
| 256 | #define STATIC_ARG_TBL_SIZE 8 /* Size of static argument table. */␊ |
| 257 | ␊ |
| 258 | /*␊ |
| 259 | * Flags used during conversion.␊ |
| 260 | */␊ |
| 261 | #define␉ALT␉␉0x001␉␉/* alternate form */␊ |
| 262 | #define␉HEXPREFIX␉0x002␉␉/* add 0x or 0X prefix */␊ |
| 263 | #define␉LADJUST␉␉0x004␉␉/* left adjustment */␊ |
| 264 | #define␉LONGDBL␉␉0x008␉␉/* long double */␊ |
| 265 | #define␉LONGINT␉␉0x010␉␉/* long integer */␊ |
| 266 | #define␉QUADINT␉␉0x020␉␉/* quad integer */␊ |
| 267 | #define␉SHORTINT␉0x040␉␉/* short integer */␊ |
| 268 | #define␉ZEROPAD␉␉0x080␉␉/* zero (as opposed to blank) pad */␊ |
| 269 | #define FPT␉␉0x100␉␉/* Floating point number */␊ |
| 270 | int␊ |
| 271 | vfprintf(FILE *fp, const char *fmt0, va_list ap)␊ |
| 272 | {␊ |
| 273 | ␉char *fmt;␉␉/* format string */␊ |
| 274 | ␉int ch;␉␉␉/* character from fmt */␊ |
| 275 | ␉int n, n2;␉␉/* handy integer (short term usage) */␊ |
| 276 | ␉char *cp;␉␉/* handy char pointer (short term usage) */␊ |
| 277 | ␉struct __siov *iovp;␉/* for PRINT macro */␊ |
| 278 | ␉int flags;␉␉/* flags as above */␊ |
| 279 | ␉int ret;␉␉/* return value accumulator */␊ |
| 280 | ␉int width;␉␉/* width from format (%8d), or 0 */␊ |
| 281 | ␉int prec;␉␉/* precision from format (%.3d), or -1 */␊ |
| 282 | ␉char sign;␉␉/* sign prefix (' ', '+', '-', or \0) */␊ |
| 283 | #ifndef NO_FLOATING_POINT␊ |
| 284 | ␉char *decimal_point = localeconv()->decimal_point;␊ |
| 285 | ␉char softsign;␉␉/* temporary negative sign for floats */␊ |
| 286 | ␉double _double;␉␉/* double precision arguments %[eEfgG] */␊ |
| 287 | ␉int expt;␉␉/* integer value of exponent */␊ |
| 288 | ␉int expsize;␉␉/* character count for expstr */␊ |
| 289 | ␉int ndig;␉␉/* actual number of digits returned by cvt */␊ |
| 290 | ␉char expstr[7];␉␉/* buffer for exponent string */␊ |
| 291 | ␉char *dtoaresult;␉/* buffer allocated by dtoa */␊ |
| 292 | #endif␊ |
| 293 | ␉u_long␉ulval = 0;␉␉/* integer arguments %[diouxX] */␊ |
| 294 | ␉u_quad_t uqval = 0;␉␉/* %q integers */␊ |
| 295 | ␉int base;␉␉/* base for [diouxX] conversion */␊ |
| 296 | ␉int dprec;␉␉/* a copy of prec if [diouxX], 0 otherwise */␊ |
| 297 | ␉int realsz;␉␉/* field size expanded by dprec, sign, etc */␊ |
| 298 | ␉int size;␉␉/* size of converted field or string */␊ |
| 299 | ␉int prsize; /* max size of printed field */␊ |
| 300 | ␉char *xdigs = NULL;␉␉/* digits for [xX] conversion */␊ |
| 301 | #define NIOV 8␊ |
| 302 | ␉struct __suio uio;␉/* output information: summary */␊ |
| 303 | ␉struct __siov iov[NIOV];/* ... and individual io vectors */␊ |
| 304 | ␉char buf[BUF];␉␉/* space for %c, %[diouxX], %[eEfgG] */␊ |
| 305 | ␉char ox[2];␉␉/* space for 0x hex-prefix */␊ |
| 306 | union arg *argtable; /* args, built due to positional arg */␊ |
| 307 | ␉union arg statargtable [STATIC_ARG_TBL_SIZE];␊ |
| 308 | int nextarg; /* 1-based argument index */␊ |
| 309 | va_list orgap; /* original argument pointer */␊ |
| 310 | ␊ |
| 311 | ␉/*␊ |
| 312 | ␉ * Choose PADSIZE to trade efficiency vs. size. If larger printf␊ |
| 313 | ␉ * fields occur frequently, increase PADSIZE and make the initialisers␊ |
| 314 | ␉ * below longer.␊ |
| 315 | ␉ */␊ |
| 316 | #define␉PADSIZE␉16␉␉/* pad chunk size */␊ |
| 317 | ␉static char blanks[PADSIZE] =␊ |
| 318 | {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};␊ |
| 319 | ␉static char zeroes[PADSIZE] =␊ |
| 320 | {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};␊ |
| 321 | ␊ |
| 322 | ␉/*␊ |
| 323 | ␉ * BEWARE, these `goto error' on error, and PAD uses `n'.␊ |
| 324 | ␉ */␊ |
| 325 | #define␉PRINT(ptr, len) { \␊ |
| 326 | iovp->iov_base = (ptr); \␊ |
| 327 | iovp->iov_len = (len); \␊ |
| 328 | uio.uio_resid += (len); \␊ |
| 329 | iovp++; \␊ |
| 330 | if (++uio.uio_iovcnt >= NIOV) { \␊ |
| 331 | if (__sprint(fp, &uio)) \␊ |
| 332 | goto error; \␊ |
| 333 | iovp = iov; \␊ |
| 334 | } \␊ |
| 335 | }␊ |
| 336 | #define␉PAD(howmany, with) { \␊ |
| 337 | if ((n = (howmany)) > 0) { \␊ |
| 338 | while (n > PADSIZE) { \␊ |
| 339 | PRINT(with, PADSIZE); \␊ |
| 340 | n -= PADSIZE; \␊ |
| 341 | } \␊ |
| 342 | PRINT(with, n); \␊ |
| 343 | } \␊ |
| 344 | }␊ |
| 345 | #define␉FLUSH() { \␊ |
| 346 | if (uio.uio_resid && __sprint(fp, &uio)) \␊ |
| 347 | goto error; \␊ |
| 348 | uio.uio_iovcnt = 0; \␊ |
| 349 | iovp = iov; \␊ |
| 350 | }␊ |
| 351 | ␊ |
| 352 | ␉/*␊ |
| 353 | ␉ * Get the argument indexed by nextarg. If the argument table is␊ |
| 354 | ␉ * built, use it to get the argument. If its not, get the next␊ |
| 355 | ␉ * argument (and arguments must be gotten sequentially).␊ |
| 356 | ␉ */␊ |
| 357 | #define GETARG(type) \␊ |
| 358 | ((argtable != NULL) ? *((type*)(&argtable[nextarg++])) : \␊ |
| 359 | (nextarg++, va_arg(ap, type)))␊ |
| 360 | ␊ |
| 361 | ␉/*␊ |
| 362 | ␉ * To extend shorts properly, we need both signed and unsigned␊ |
| 363 | ␉ * argument extraction methods.␊ |
| 364 | ␉ */␊ |
| 365 | #define␉SARG() \␊ |
| 366 | (flags&LONGINT ? GETARG(long) : \␊ |
| 367 | flags&SHORTINT ? (long)(short)GETARG(int) : \␊ |
| 368 | flags&CHARINT ? (long)(signed char)GETARG(int) : \␊ |
| 369 | (long)GETARG(int))␊ |
| 370 | #define␉UARG() \␊ |
| 371 | (flags&LONGINT ? GETARG(u_long) : \␊ |
| 372 | flags&SHORTINT ? (u_long)(u_short)GETARG(int) : \␊ |
| 373 | flags&CHARINT ? (u_long)(u_char)GETARG(int) : \␊ |
| 374 | (u_long)GETARG(u_int))␊ |
| 375 | #define␉INTMAX_SIZE␉(INTMAXT|SIZET|PTRDIFFT|LLONGINT)␊ |
| 376 | #define SJARG() \␊ |
| 377 | (flags&INTMAXT ? GETARG(intmax_t) : \␊ |
| 378 | flags&SIZET ? (intmax_t)GETARG(ssize_t) : \␊ |
| 379 | flags&PTRDIFFT ? (intmax_t)GETARG(ptrdiff_t) : \␊ |
| 380 | (intmax_t)GETARG(long long))␊ |
| 381 | #define␉UJARG() \␊ |
| 382 | (flags&INTMAXT ? GETARG(uintmax_t) : \␊ |
| 383 | flags&SIZET ? (uintmax_t)GETARG(size_t) : \␊ |
| 384 | flags&PTRDIFFT ? (uintmax_t)GETARG(ptrdiff_t) : \␊ |
| 385 | (uintmax_t)GETARG(unsigned long long))␊ |
| 386 | ␊ |
| 387 | ␉/*␊ |
| 388 | ␉ * Get * arguments, including the form *nn$. Preserve the nextarg␊ |
| 389 | ␉ * that the argument can be gotten once the type is determined.␊ |
| 390 | ␉ */␊ |
| 391 | #define GETASTER(val) \␊ |
| 392 | n2 = 0; \␊ |
| 393 | cp = fmt; \␊ |
| 394 | while (is_digit(*cp)) { \␊ |
| 395 | n2 = 10 * n2 + to_digit(*cp); \␊ |
| 396 | cp++; \␊ |
| 397 | } \␊ |
| 398 | if (*cp == '$') { \␊ |
| 399 | int hold = nextarg; \␊ |
| 400 | if (argtable == NULL) { \␊ |
| 401 | argtable = statargtable; \␊ |
| 402 | if (__find_arguments (fmt0, orgap, &argtable)) { \␊ |
| 403 | ret = EOF; \␊ |
| 404 | goto error; \␊ |
| 405 | } \␊ |
| 406 | } \␊ |
| 407 | nextarg = n2; \␊ |
| 408 | val = GETARG (int); \␊ |
| 409 | nextarg = hold; \␊ |
| 410 | fmt = ++cp; \␊ |
| 411 | } else { \␊ |
| 412 | val = GETARG (int); \␊ |
| 413 | }␊ |
| 414 | ␊ |
| 415 | ␊ |
| 416 | #ifndef NO_FLOATING_POINT␊ |
| 417 | ␉dtoaresult = NULL;␊ |
| 418 | #endif␊ |
| 419 | ␉/* sorry, fprintf(read_only_file, "") returns EOF, not 0 */␊ |
| 420 | ␉if (prepwrite(fp) != 0)␊ |
| 421 | ␉␉return (EOF);␊ |
| 422 | ␊ |
| 423 | ␉/* optimise fprintf(stderr) (and other unbuffered Unix files) */␊ |
| 424 | ␉if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) &&␊ |
| 425 | ␉ fp->_file >= 0) {␊ |
| 426 | ␉␉return (__sbprintf(fp, fmt0, ap));␊ |
| 427 | ␉}␊ |
| 428 | ␊ |
| 429 | ␉fmt = (char *)fmt0;␊ |
| 430 | argtable = NULL;␊ |
| 431 | nextarg = 1;␊ |
| 432 | orgap = ap;␊ |
| 433 | ␉uio.uio_iov = iovp = iov;␊ |
| 434 | ␉uio.uio_resid = 0;␊ |
| 435 | ␉uio.uio_iovcnt = 0;␊ |
| 436 | ␉ret = 0;␊ |
| 437 | ␊ |
| 438 | ␉/*␊ |
| 439 | ␉ * Scan the format for conversions (`%' character).␊ |
| 440 | ␉ */␊ |
| 441 | ␉for (;;) {␊ |
| 442 | ␉␉for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++)␊ |
| 443 | /* void */;␊ |
| 444 | ␉␉if ((n = fmt - cp) != 0) {␊ |
| 445 | ␉␉␉if ((unsigned)ret + n > INT_MAX) {␊ |
| 446 | ␉␉␉␉ret = EOF;␊ |
| 447 | ␉␉␉␉goto error;␊ |
| 448 | ␉␉␉}␊ |
| 449 | ␉␉␉PRINT(cp, n);␊ |
| 450 | ␉␉␉ret += n;␊ |
| 451 | ␉␉}␊ |
| 452 | ␉␉if (ch == '\0')␊ |
| 453 | ␉␉␉goto done;␊ |
| 454 | ␉␉fmt++;␉␉/* skip over '%' */␊ |
| 455 | ␊ |
| 456 | ␉␉flags = 0;␊ |
| 457 | ␉␉dprec = 0;␊ |
| 458 | ␉␉width = 0;␊ |
| 459 | ␉␉prec = -1;␊ |
| 460 | ␉␉sign = '\0';␊ |
| 461 | ␊ |
| 462 | rflag:␉␉ch = *fmt++;␊ |
| 463 | reswitch:␉switch (ch) {␊ |
| 464 | ␉␉case ' ':␊ |
| 465 | ␉␉␉/*␊ |
| 466 | ␉␉␉ * ``If the space and + flags both appear, the space␊ |
| 467 | ␉␉␉ * flag will be ignored.''␊ |
| 468 | ␉␉␉ *␉-- ANSI X3J11␊ |
| 469 | ␉␉␉ */␊ |
| 470 | ␉␉␉if (!sign)␊ |
| 471 | ␉␉␉␉sign = ' ';␊ |
| 472 | ␉␉␉goto rflag;␊ |
| 473 | ␉␉case '#':␊ |
| 474 | ␉␉␉flags |= ALT;␊ |
| 475 | ␉␉␉goto rflag;␊ |
| 476 | ␉␉case '*':␊ |
| 477 | ␉␉␉/*␊ |
| 478 | ␉␉␉ * ``A negative field width argument is taken as a␊ |
| 479 | ␉␉␉ * - flag followed by a positive field width.''␊ |
| 480 | ␉␉␉ *␉-- ANSI X3J11␊ |
| 481 | ␉␉␉ * They don't exclude field widths read from args.␊ |
| 482 | ␉␉␉ */␊ |
| 483 | ␉␉␉GETASTER (width);␊ |
| 484 | ␉␉␉if (width >= 0)␊ |
| 485 | ␉␉␉␉goto rflag;␊ |
| 486 | ␉␉␉width = -width;␊ |
| 487 | ␉␉␉/* FALLTHROUGH */␊ |
| 488 | ␉␉case '-':␊ |
| 489 | ␉␉␉flags |= LADJUST;␊ |
| 490 | ␉␉␉goto rflag;␊ |
| 491 | ␉␉case '+':␊ |
| 492 | ␉␉␉sign = '+';␊ |
| 493 | ␉␉␉goto rflag;␊ |
| 494 | ␉␉case '.':␊ |
| 495 | ␉␉␉if ((ch = *fmt++) == '*') {␊ |
| 496 | ␉␉␉␉GETASTER (n);␊ |
| 497 | ␉␉␉␉prec = n < 0 ? -1 : n;␊ |
| 498 | ␉␉␉␉goto rflag;␊ |
| 499 | ␉␉␉}␊ |
| 500 | ␉␉␉n = 0;␊ |
| 501 | ␉␉␉while (is_digit(ch)) {␊ |
| 502 | ␉␉␉␉n = 10 * n + to_digit(ch);␊ |
| 503 | ␉␉␉␉ch = *fmt++;␊ |
| 504 | ␉␉␉}␊ |
| 505 | ␉␉␉prec = n < 0 ? -1 : n;␊ |
| 506 | ␉␉␉goto reswitch;␊ |
| 507 | ␉␉case '0':␊ |
| 508 | ␉␉␉/*␊ |
| 509 | ␉␉␉ * ``Note that 0 is taken as a flag, not as the␊ |
| 510 | ␉␉␉ * beginning of a field width.''␊ |
| 511 | ␉␉␉ *␉-- ANSI X3J11␊ |
| 512 | ␉␉␉ */␊ |
| 513 | ␉␉␉flags |= ZEROPAD;␊ |
| 514 | ␉␉␉goto rflag;␊ |
| 515 | ␉␉case '1': case '2': case '3': case '4':␊ |
| 516 | ␉␉case '5': case '6': case '7': case '8': case '9':␊ |
| 517 | ␉␉␉n = 0;␊ |
| 518 | ␉␉␉do {␊ |
| 519 | ␉␉␉␉n = 10 * n + to_digit(ch);␊ |
| 520 | ␉␉␉␉ch = *fmt++;␊ |
| 521 | ␉␉␉} while (is_digit(ch));␊ |
| 522 | ␉␉␉if (ch == '$') {␊ |
| 523 | ␉␉␉␉nextarg = n;␊ |
| 524 | if (argtable == NULL) {␊ |
| 525 | argtable = statargtable;␊ |
| 526 | __find_arguments (fmt0, orgap,␊ |
| 527 | &argtable);␊ |
| 528 | ␉␉␉␉}␊ |
| 529 | ␉␉␉␉goto rflag;␊ |
| 530 | }␊ |
| 531 | ␉␉␉width = n;␊ |
| 532 | ␉␉␉goto reswitch;␊ |
| 533 | #ifndef NO_FLOATING_POINT␊ |
| 534 | ␉␉case 'L':␊ |
| 535 | ␉␉␉flags |= LONGDBL;␊ |
| 536 | ␉␉␉goto rflag;␊ |
| 537 | #endif␊ |
| 538 | ␉␉case 'h':␊ |
| 539 | ␉␉␉flags |= SHORTINT;␊ |
| 540 | ␉␉␉goto rflag;␊ |
| 541 | ␉␉case 'l':␊ |
| 542 | ␉␉␉if (flags & LONGINT)␊ |
| 543 | ␉␉␉␉flags |= QUADINT;␊ |
| 544 | ␉␉␉else␊ |
| 545 | ␉␉␉␉flags |= LONGINT;␊ |
| 546 | ␉␉␉goto rflag;␊ |
| 547 | ␉␉case 'q':␊ |
| 548 | ␉␉␉flags |= QUADINT;␊ |
| 549 | ␉␉␉goto rflag;␊ |
| 550 | ␉␉case 'c':␊ |
| 551 | ␉␉␉*(cp = buf) = GETARG(int);␊ |
| 552 | ␉␉␉size = 1;␊ |
| 553 | ␉␉␉sign = '\0';␊ |
| 554 | ␉␉␉break;␊ |
| 555 | ␉␉case 'D':␊ |
| 556 | ␉␉␉flags |= LONGINT;␊ |
| 557 | ␉␉␉/*FALLTHROUGH*/␊ |
| 558 | ␉␉case 'd':␊ |
| 559 | ␉␉case 'i':␊ |
| 560 | ␉␉␉if (flags & QUADINT) {␊ |
| 561 | ␉␉␉␉uqval = GETARG(quad_t);␊ |
| 562 | ␉␉␉␉if ((quad_t)uqval < 0) {␊ |
| 563 | ␉␉␉␉␉uqval = -uqval;␊ |
| 564 | ␉␉␉␉␉sign = '-';␊ |
| 565 | ␉␉␉␉}␊ |
| 566 | ␉␉␉} else {␊ |
| 567 | ␉␉␉␉ulval = SARG();␊ |
| 568 | ␉␉␉␉if ((long)ulval < 0) {␊ |
| 569 | ␉␉␉␉␉ulval = -ulval;␊ |
| 570 | ␉␉␉␉␉sign = '-';␊ |
| 571 | ␉␉␉␉}␊ |
| 572 | ␉␉␉}␊ |
| 573 | ␉␉␉base = 10;␊ |
| 574 | ␉␉␉goto number;␊ |
| 575 | #ifndef NO_FLOATING_POINT␊ |
| 576 | ␉␉case 'e':␊ |
| 577 | ␉␉case 'E':␊ |
| 578 | ␉␉case 'f':␊ |
| 579 | ␉␉␉goto fp_begin;␊ |
| 580 | ␉␉case 'g':␊ |
| 581 | ␉␉case 'G':␊ |
| 582 | ␉␉␉if (prec == 0)␊ |
| 583 | ␉␉␉␉prec = 1;␊ |
| 584 | fp_begin:␉␉if (prec == -1)␊ |
| 585 | prec = DEFPREC;␊ |
| 586 | ␉␉␉if (flags & LONGDBL)␊ |
| 587 | /* XXX this loses precision. */␊ |
| 588 | ␉␉␉␉_double = (double)GETARG(long double);␊ |
| 589 | ␉␉␉else␊ |
| 590 | ␉␉␉␉_double = GETARG(double);␊ |
| 591 | ␉␉␉/* do this before tricky precision changes */␊ |
| 592 | ␉␉␉if (isinf(_double)) {␊ |
| 593 | ␉␉␉␉if (_double < 0)␊ |
| 594 | ␉␉␉␉␉sign = '-';␊ |
| 595 | ␉␉␉␉cp = "Inf";␊ |
| 596 | ␉␉␉␉size = 3;␊ |
| 597 | ␉␉␉␉break;␊ |
| 598 | ␉␉␉}␊ |
| 599 | ␉␉␉if (isnan(_double)) {␊ |
| 600 | ␉␉␉␉cp = "NaN";␊ |
| 601 | ␉␉␉␉size = 3;␊ |
| 602 | ␉␉␉␉break;␊ |
| 603 | ␉␉␉}␊ |
| 604 | ␉␉␉flags |= FPT;␊ |
| 605 | ␉␉␉if (dtoaresult != NULL) {␊ |
| 606 | ␉␉␉␉free(dtoaresult);␊ |
| 607 | ␉␉␉␉dtoaresult = NULL;␊ |
| 608 | ␉␉␉}␊ |
| 609 | ␉␉␉cp = cvt(_double, prec, flags, &softsign,␊ |
| 610 | &expt, ch, &ndig, &dtoaresult);␊ |
| 611 | ␉␉␉if (ch == 'g' || ch == 'G') {␊ |
| 612 | ␉␉␉␉if (expt <= -4 || expt > prec)␊ |
| 613 | ␉␉␉␉␉ch = (ch == 'g') ? 'e' : 'E';␊ |
| 614 | ␉␉␉␉else␊ |
| 615 | ␉␉␉␉␉ch = 'g';␊ |
| 616 | ␉␉␉}␊ |
| 617 | ␉␉␉if (ch <= 'e') {␉/* 'e' or 'E' fmt */␊ |
| 618 | ␉␉␉␉--expt;␊ |
| 619 | ␉␉␉␉expsize = exponent(expstr, expt, ch);␊ |
| 620 | ␉␉␉␉size = expsize + ndig;␊ |
| 621 | ␉␉␉␉if (ndig > 1 || flags & ALT)␊ |
| 622 | ␉␉␉␉␉++size;␊ |
| 623 | ␉␉␉} else if (ch == 'f') {␉␉/* f fmt */␊ |
| 624 | ␉␉␉␉if (expt > 0) {␊ |
| 625 | ␉␉␉␉␉size = expt;␊ |
| 626 | ␉␉␉␉␉if (prec || flags & ALT)␊ |
| 627 | ␉␉␉␉␉␉size += prec + 1;␊ |
| 628 | ␉␉␉␉} else␉/* "0.X" */␊ |
| 629 | ␉␉␉␉␉size = prec + 2;␊ |
| 630 | ␉␉␉} else if (expt >= ndig) {␉/* fixed g fmt */␊ |
| 631 | ␉␉␉␉size = expt;␊ |
| 632 | ␉␉␉␉if (flags & ALT)␊ |
| 633 | ␉␉␉␉␉++size;␊ |
| 634 | ␉␉␉} else␊ |
| 635 | ␉␉␉␉size = ndig + (expt > 0 ?␊ |
| 636 | 1 : 2 - expt);␊ |
| 637 | ␊ |
| 638 | ␉␉␉if (softsign)␊ |
| 639 | ␉␉␉␉sign = '-';␊ |
| 640 | ␉␉␉break;␊ |
| 641 | #endif /* FLOATING_POINT */␊ |
| 642 | ␉␉case 'n':␊ |
| 643 | ␉␉␉if (flags & QUADINT)␊ |
| 644 | ␉␉␉␉*GETARG(quad_t *) = ret;␊ |
| 645 | ␉␉␉else if (flags & LONGINT)␊ |
| 646 | ␉␉␉␉*GETARG(long *) = ret;␊ |
| 647 | ␉␉␉else if (flags & SHORTINT)␊ |
| 648 | ␉␉␉␉*GETARG(short *) = ret;␊ |
| 649 | ␉␉␉else␊ |
| 650 | ␉␉␉␉*GETARG(int *) = ret;␊ |
| 651 | ␉␉␉continue;␉/* no output */␊ |
| 652 | ␉␉case 'O':␊ |
| 653 | ␉␉␉flags |= LONGINT;␊ |
| 654 | ␉␉␉/*FALLTHROUGH*/␊ |
| 655 | ␉␉case 'o':␊ |
| 656 | ␉␉␉if (flags & QUADINT)␊ |
| 657 | ␉␉␉␉uqval = GETARG(u_quad_t);␊ |
| 658 | ␉␉␉else␊ |
| 659 | ␉␉␉␉ulval = UARG();␊ |
| 660 | ␉␉␉base = 8;␊ |
| 661 | ␉␉␉goto nosign;␊ |
| 662 | ␉␉case 'p':␊ |
| 663 | ␉␉␉/*␊ |
| 664 | ␉␉␉ * ``The argument shall be a pointer to void. The␊ |
| 665 | ␉␉␉ * value of the pointer is converted to a sequence␊ |
| 666 | ␉␉␉ * of printable characters, in an implementation-␊ |
| 667 | ␉␉␉ * defined manner.''␊ |
| 668 | ␉␉␉ *␉-- ANSI X3J11␊ |
| 669 | ␉␉␉ */␊ |
| 670 | ␉␉␉ulval = (u_long)GETARG(void *);␊ |
| 671 | ␉␉␉base = 16;␊ |
| 672 | ␉␉␉xdigs = "0123456789abcdef";␊ |
| 673 | ␉␉␉flags = (flags & ~QUADINT) | HEXPREFIX;␊ |
| 674 | ␉␉␉ch = 'x';␊ |
| 675 | ␉␉␉goto nosign;␊ |
| 676 | ␉␉case 's':␊ |
| 677 | ␉␉␉if ((cp = GETARG(char *)) == NULL)␊ |
| 678 | ␉␉␉␉cp = "(null)";␊ |
| 679 | ␉␉␉if (prec >= 0) {␊ |
| 680 | ␉␉␉␉/*␊ |
| 681 | ␉␉␉␉ * can't use strlen; can only look for the␊ |
| 682 | ␉␉␉␉ * NUL in the first `prec' characters, and␊ |
| 683 | ␉␉␉␉ * strlen() will go further.␊ |
| 684 | ␉␉␉␉ */␊ |
| 685 | ␉␉␉␉char *p = memchr(cp, 0, (size_t)prec);␊ |
| 686 | ␊ |
| 687 | ␉␉␉␉if (p != NULL) {␊ |
| 688 | ␉␉␉␉␉size = p - cp;␊ |
| 689 | ␉␉␉␉␉if (size > prec)␊ |
| 690 | ␉␉␉␉␉␉size = prec;␊ |
| 691 | ␉␉␉␉} else␊ |
| 692 | ␉␉␉␉␉size = prec;␊ |
| 693 | ␉␉␉} else␊ |
| 694 | ␉␉␉␉size = strlen(cp);␊ |
| 695 | ␉␉␉sign = '\0';␊ |
| 696 | ␉␉␉break;␊ |
| 697 | ␉␉case 'U':␊ |
| 698 | ␉␉␉flags |= LONGINT;␊ |
| 699 | ␉␉␉/*FALLTHROUGH*/␊ |
| 700 | ␉␉case 'u':␊ |
| 701 | ␉␉␉if (flags & QUADINT)␊ |
| 702 | ␉␉␉␉uqval = GETARG(u_quad_t);␊ |
| 703 | ␉␉␉else␊ |
| 704 | ␉␉␉␉ulval = UARG();␊ |
| 705 | ␉␉␉base = 10;␊ |
| 706 | ␉␉␉goto nosign;␊ |
| 707 | ␉␉case 'X':␊ |
| 708 | ␉␉␉xdigs = "0123456789ABCDEF";␊ |
| 709 | ␉␉␉goto hex;␊ |
| 710 | ␉␉case 'x':␊ |
| 711 | ␉␉␉xdigs = "0123456789abcdef";␊ |
| 712 | hex:␉␉␉if (flags & QUADINT)␊ |
| 713 | uqval = GETARG(u_quad_t);␊ |
| 714 | else␊ |
| 715 | ulval = UARG();␊ |
| 716 | ␉␉␉base = 16;␊ |
| 717 | ␉␉␉/* leading 0x/X only if non-zero */␊ |
| 718 | ␉␉␉if (flags & ALT &&␊ |
| 719 | ␉␉␉ (flags & QUADINT ? uqval != 0 : ulval != 0))␊ |
| 720 | ␉␉␉␉flags |= HEXPREFIX;␊ |
| 721 | ␊ |
| 722 | ␉␉␉/* unsigned conversions */␊ |
| 723 | nosign:␉␉␉sign = '\0';␊ |
| 724 | ␉␉␉/*␊ |
| 725 | ␉␉␉ * ``... diouXx conversions ... if a precision is␊ |
| 726 | ␉␉␉ * specified, the 0 flag will be ignored.''␊ |
| 727 | ␉␉␉ *␉-- ANSI X3J11␊ |
| 728 | ␉␉␉ */␊ |
| 729 | number:␉␉␉if ((dprec = prec) >= 0)␊ |
| 730 | flags &= ~ZEROPAD;␊ |
| 731 | ␊ |
| 732 | ␉␉␉/*␊ |
| 733 | ␉␉␉ * ``The result of converting a zero value with an␊ |
| 734 | ␉␉␉ * explicit precision of zero is no characters.''␊ |
| 735 | ␉␉␉ *␉-- ANSI X3J11␊ |
| 736 | ␉␉␉ */␊ |
| 737 | ␉␉␉cp = buf + BUF;␊ |
| 738 | ␉␉␉if (flags & QUADINT) {␊ |
| 739 | ␉␉␉␉if (uqval != 0 || prec != 0)␊ |
| 740 | ␉␉␉␉␉cp = __uqtoa(uqval, cp, base,␊ |
| 741 | flags & ALT, xdigs);␊ |
| 742 | ␉␉␉} else {␊ |
| 743 | ␉␉␉␉if (ulval != 0 || prec != 0)␊ |
| 744 | ␉␉␉␉␉cp = __ultoa(ulval, cp, base,␊ |
| 745 | flags & ALT, xdigs);␊ |
| 746 | ␉␉␉}␊ |
| 747 | ␉␉␉size = buf + BUF - cp;␊ |
| 748 | ␉␉␉break;␊ |
| 749 | ␉␉default:␉/* "%?" prints ?, unless ? is NUL */␊ |
| 750 | ␉␉␉if (ch == '\0')␊ |
| 751 | ␉␉␉␉goto done;␊ |
| 752 | ␉␉␉/* pretend it was %c with argument ch */␊ |
| 753 | ␉␉␉cp = buf;␊ |
| 754 | ␉␉␉*cp = ch;␊ |
| 755 | ␉␉␉size = 1;␊ |
| 756 | ␉␉␉sign = '\0';␊ |
| 757 | ␉␉␉break;␊ |
| 758 | }␊ |
| 759 | ␊ |
| 760 | ␉␉/*␊ |
| 761 | ␉␉ * All reasonable formats wind up here. At this point, `cp'␊ |
| 762 | ␉␉ * points to a string which (if not flags&LADJUST) should be␊ |
| 763 | ␉␉ * padded out to `width' places. If flags&ZEROPAD, it should␊ |
| 764 | ␉␉ * first be prefixed by any sign or other prefix; otherwise,␊ |
| 765 | ␉␉ * it should be blank padded before the prefix is emitted.␊ |
| 766 | ␉␉ * After any left-hand padding and prefixing, emit zeroes␊ |
| 767 | ␉␉ * required by a decimal [diouxX] precision, then print the␊ |
| 768 | ␉␉ * string proper, then emit zeroes required by any leftover␊ |
| 769 | ␉␉ * floating precision; finally, if LADJUST, pad with blanks.␊ |
| 770 | ␉␉ *␊ |
| 771 | ␉␉ * Compute actual size, so we know how much to pad.␊ |
| 772 | ␉␉ * size excludes decimal prec; realsz includes it.␊ |
| 773 | ␉␉ */␊ |
| 774 | ␉␉realsz = dprec > size ? dprec : size;␊ |
| 775 | ␉␉if (sign)␊ |
| 776 | ␉␉␉realsz++;␊ |
| 777 | ␉␉else if (flags & HEXPREFIX)␊ |
| 778 | ␉␉␉realsz += 2;␊ |
| 779 | ␊ |
| 780 | ␉␉prsize = width > realsz ? width : realsz;␊ |
| 781 | ␉␉if ((unsigned)ret + prsize > INT_MAX) {␊ |
| 782 | ␉␉␉ret = EOF;␊ |
| 783 | ␉␉␉goto error;␊ |
| 784 | ␉␉}␊ |
| 785 | ␊ |
| 786 | ␉␉/* right-adjusting blank padding */␊ |
| 787 | ␉␉if ((flags & (LADJUST|ZEROPAD)) == 0)␊ |
| 788 | ␉␉␉PAD(width - realsz, blanks);␊ |
| 789 | ␊ |
| 790 | ␉␉/* prefix */␊ |
| 791 | ␉␉if (sign) {␊ |
| 792 | ␉␉␉PRINT(&sign, 1);␊ |
| 793 | ␉␉} else if (flags & HEXPREFIX) {␊ |
| 794 | ␉␉␉ox[0] = '0';␊ |
| 795 | ␉␉␉ox[1] = ch;␊ |
| 796 | ␉␉␉PRINT(ox, 2);␊ |
| 797 | ␉␉}␊ |
| 798 | ␊ |
| 799 | ␉␉/* right-adjusting zero padding */␊ |
| 800 | ␉␉if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD)␊ |
| 801 | ␉␉␉PAD(width - realsz, zeroes);␊ |
| 802 | ␊ |
| 803 | ␉␉/* leading zeroes from decimal precision */␊ |
| 804 | ␉␉PAD(dprec - size, zeroes);␊ |
| 805 | ␊ |
| 806 | ␉␉/* the string or number proper */␊ |
| 807 | #ifndef NO_FLOATING_POINT␊ |
| 808 | ␉␉if ((flags & FPT) == 0) {␊ |
| 809 | ␉␉␉PRINT(cp, size);␊ |
| 810 | ␉␉} else {␉/* glue together f_p fragments */␊ |
| 811 | ␉␉␉if (ch >= 'f') {␉/* 'f' or 'g' */␊ |
| 812 | ␉␉␉␉if (_double == 0) {␊ |
| 813 | ␉␉␉␉␉/* kludge for __dtoa irregularity */␊ |
| 814 | ␉␉␉␉␉PRINT("0", 1);␊ |
| 815 | ␉␉␉␉␉if (expt < ndig || (flags & ALT) != 0) {␊ |
| 816 | ␉␉␉␉␉␉PRINT(decimal_point, 1);␊ |
| 817 | ␉␉␉␉␉␉PAD(ndig - 1, zeroes);␊ |
| 818 | ␉␉␉␉␉}␊ |
| 819 | ␉␉␉␉} else if (expt <= 0) {␊ |
| 820 | ␉␉␉␉␉PRINT("0", 1);␊ |
| 821 | ␉␉␉␉␉PRINT(decimal_point, 1);␊ |
| 822 | ␉␉␉␉␉PAD(-expt, zeroes);␊ |
| 823 | ␉␉␉␉␉PRINT(cp, ndig);␊ |
| 824 | ␉␉␉␉} else if (expt >= ndig) {␊ |
| 825 | ␉␉␉␉␉PRINT(cp, ndig);␊ |
| 826 | ␉␉␉␉␉PAD(expt - ndig, zeroes);␊ |
| 827 | ␉␉␉␉␉if (flags & ALT)␊ |
| 828 | ␉␉␉␉␉␉PRINT(decimal_point, 1);␊ |
| 829 | ␉␉␉␉} else {␊ |
| 830 | ␉␉␉␉␉PRINT(cp, expt);␊ |
| 831 | ␉␉␉␉␉cp += expt;␊ |
| 832 | ␉␉␉␉␉PRINT(decimal_point, 1);␊ |
| 833 | ␉␉␉␉␉PRINT(cp, ndig-expt);␊ |
| 834 | ␉␉␉␉}␊ |
| 835 | ␉␉␉} else {␉/* 'e' or 'E' */␊ |
| 836 | ␉␉␉␉if (ndig > 1 || flags & ALT) {␊ |
| 837 | ␉␉␉␉␉ox[0] = *cp++;␊ |
| 838 | ␉␉␉␉␉ox[1] = *decimal_point;␊ |
| 839 | ␉␉␉␉␉PRINT(ox, 2);␊ |
| 840 | ␉␉␉␉␉if (_double) {␊ |
| 841 | ␉␉␉␉␉␉PRINT(cp, ndig-1);␊ |
| 842 | ␉␉␉␉␉} else␉/* 0.[0..] */␊ |
| 843 | /* __dtoa irregularity */␊ |
| 844 | ␉␉␉␉␉␉PAD(ndig - 1, zeroes);␊ |
| 845 | ␉␉␉␉} else␉/* XeYYY */␊ |
| 846 | ␉␉␉␉␉PRINT(cp, 1);␊ |
| 847 | ␉␉␉␉PRINT(expstr, expsize);␊ |
| 848 | ␉␉␉}␊ |
| 849 | ␉␉}␊ |
| 850 | #else␊ |
| 851 | ␉␉PRINT(cp, size);␊ |
| 852 | #endif␊ |
| 853 | ␉␉/* left-adjusting padding (always blank) */␊ |
| 854 | ␉␉if (flags & LADJUST)␊ |
| 855 | ␉␉␉PAD(width - realsz, blanks);␊ |
| 856 | ␊ |
| 857 | ␉␉/* finally, adjust ret */␊ |
| 858 | ␉␉ret += prsize;␊ |
| 859 | ␊ |
| 860 | ␉␉FLUSH();␉/* copy out the I/O vectors */␊ |
| 861 | ␉}␊ |
| 862 | done:␊ |
| 863 | ␉FLUSH();␊ |
| 864 | error:␊ |
| 865 | #ifndef NO_FLOATING_POINT␊ |
| 866 | ␉if (dtoaresult != NULL)␊ |
| 867 | ␉␉free(dtoaresult);␊ |
| 868 | #endif␊ |
| 869 | ␉if (__sferror(fp))␊ |
| 870 | ␉␉ret = EOF;␊ |
| 871 | if ((argtable != NULL) && (argtable != statargtable))␊ |
| 872 | free (argtable);␊ |
| 873 | ␉return (ret);␊ |
| 874 | ␉/* NOTREACHED */␊ |
| 875 | }␊ |
| 876 | |
