1 /* $NetBSD: vfwprintf.c,v 1.5 2005/12/02 14:45:24 yamt Exp $ */ 2 3 /*- 4 * Copyright (c) 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Chris Torek. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #if defined(LIBC_SCCS) && !defined(lint) 41 #if 0 42 static char sccsid[] = "@(#)vfprintf.c 8.1 (Berkeley) 6/4/93"; 43 __FBSDID("$FreeBSD: src/lib/libc/stdio/vfwprintf.c,v 1.24 2005/04/16 22:36:51 das Exp $"); 44 #else 45 __RCSID("$NetBSD: vfwprintf.c,v 1.5 2005/12/02 14:45:24 yamt Exp $"); 46 #endif 47 #endif /* LIBC_SCCS and not lint */ 48 49 /* 50 * Actual wprintf innards. 51 * 52 * Avoid making gratuitous changes to this source file; it should be kept 53 * as close as possible to vfprintf.c for ease of maintenance. 54 */ 55 56 #include "namespace.h" 57 #include <sys/types.h> 58 59 #include <assert.h> 60 #include <ctype.h> 61 #include <limits.h> 62 #include <locale.h> 63 #include <stdarg.h> 64 #include <stddef.h> 65 #include <stdint.h> 66 #include <stdio.h> 67 #include <stdlib.h> 68 #include <string.h> 69 #include <errno.h> 70 #include <wchar.h> 71 #include <wctype.h> 72 73 #include "reentrant.h" 74 #include "local.h" 75 #include "extern.h" 76 #include "fvwrite.h" 77 78 union arg { 79 int intarg; 80 u_int uintarg; 81 long longarg; 82 u_long ulongarg; 83 quad_t longlongarg; 84 u_quad_t ulonglongarg; 85 ptrdiff_t ptrdiffarg; 86 size_t sizearg; 87 intmax_t intmaxarg; 88 uintmax_t uintmaxarg; 89 void *pvoidarg; 90 char *pchararg; 91 signed char *pschararg; 92 short *pshortarg; 93 int *pintarg; 94 long *plongarg; 95 quad_t *plonglongarg; 96 ptrdiff_t *pptrdiffarg; 97 size_t *psizearg; 98 intmax_t *pintmaxarg; 99 #ifndef NO_FLOATING_POINT 100 double doublearg; 101 long double longdoublearg; 102 #endif 103 wint_t wintarg; 104 wchar_t *pwchararg; 105 }; 106 107 /* 108 * Type ids for argument type table. 109 */ 110 enum typeid { 111 T_UNUSED, TP_SHORT, T_INT, T_U_INT, TP_INT, 112 T_LONG, T_U_LONG, TP_LONG, T_LLONG, T_U_LLONG, TP_LLONG, 113 T_PTRDIFFT, TP_PTRDIFFT, T_SIZET, TP_SIZET, 114 T_INTMAXT, T_UINTMAXT, TP_INTMAXT, TP_VOID, TP_CHAR, TP_SCHAR, 115 T_DOUBLE, T_LONG_DOUBLE, T_WINT, TP_WCHAR 116 }; 117 118 static int __sbprintf(FILE *, const wchar_t *, va_list); 119 static wint_t __xfputwc(wchar_t, FILE *); 120 static wchar_t *__ujtoa(uintmax_t, wchar_t *, int, int, const char *, int, 121 char, const char *); 122 static wchar_t *__ultoa(u_long, wchar_t *, int, int, const char *, int, 123 char, const char *); 124 static wchar_t *__mbsconv(char *, int); 125 static void __find_arguments(const wchar_t *, va_list, union arg **); 126 static void __grow_type_table(int, enum typeid **, int *); 127 128 /* 129 * Helper function for `fprintf to unbuffered unix file': creates a 130 * temporary buffer. We only work on write-only files; this avoids 131 * worries about ungetc buffers and so forth. 132 */ 133 static int 134 __sbprintf(FILE *fp, const wchar_t *fmt, va_list ap) 135 { 136 int ret; 137 FILE fake; 138 unsigned char buf[BUFSIZ]; 139 140 /* copy the important variables */ 141 fake._flags = fp->_flags & ~__SNBF; 142 fake._file = fp->_file; 143 fake._cookie = fp->_cookie; 144 fake._write = fp->_write; 145 146 /* set up the buffer */ 147 fake._bf._base = fake._p = buf; 148 fake._bf._size = fake._w = sizeof(buf); 149 fake._lbfsize = 0; /* not actually used, but Just In Case */ 150 151 /* do the work, then copy any error status */ 152 ret = __vfwprintf_unlocked(&fake, fmt, ap); 153 if (ret >= 0 && fflush(&fake)) 154 ret = WEOF; 155 if (fake._flags & __SERR) 156 fp->_flags |= __SERR; 157 return (ret); 158 } 159 160 /* 161 * Like __fputwc, but handles fake string (__SSTR) files properly. 162 * File must already be locked. 163 */ 164 static wint_t 165 __xfputwc(wchar_t wc, FILE *fp) 166 { 167 static const mbstate_t initial; 168 mbstate_t mbs; 169 char buf[MB_LEN_MAX]; 170 struct __suio uio; 171 struct __siov iov; 172 size_t len; 173 174 if ((fp->_flags & __SSTR) == 0) 175 return (__fputwc_unlock(wc, fp)); 176 177 mbs = initial; 178 if ((len = wcrtomb(buf, wc, &mbs)) == (size_t)-1) { 179 fp->_flags |= __SERR; 180 return (WEOF); 181 } 182 uio.uio_iov = &iov; 183 uio.uio_resid = len; 184 uio.uio_iovcnt = 1; 185 iov.iov_base = buf; 186 iov.iov_len = len; 187 return (__sfvwrite(fp, &uio) != EOF ? (wint_t)wc : WEOF); 188 } 189 190 /* 191 * Macros for converting digits to letters and vice versa 192 */ 193 #define to_digit(c) ((c) - '0') 194 #define is_digit(c) ((unsigned)to_digit(c) <= 9) 195 #define to_char(n) (wchar_t)((n) + '0') 196 197 /* 198 * Convert an unsigned long to ASCII for printf purposes, returning 199 * a pointer to the first character of the string representation. 200 * Octal numbers can be forced to have a leading zero; hex numbers 201 * use the given digits. 202 */ 203 static wchar_t * 204 __ultoa(u_long val, wchar_t *endp, int base, int octzero, const char *xdigs, 205 int needgrp, char thousep, const char *grp) 206 { 207 wchar_t *cp = endp; 208 long sval; 209 int ndig; 210 211 /* 212 * Handle the three cases separately, in the hope of getting 213 * better/faster code. 214 */ 215 switch (base) { 216 case 10: 217 if (val < 10) { /* many numbers are 1 digit */ 218 *--cp = to_char(val); 219 return (cp); 220 } 221 ndig = 0; 222 /* 223 * On many machines, unsigned arithmetic is harder than 224 * signed arithmetic, so we do at most one unsigned mod and 225 * divide; this is sufficient to reduce the range of 226 * the incoming value to where signed arithmetic works. 227 */ 228 if (val > LONG_MAX) { 229 *--cp = to_char(val % 10); 230 ndig++; 231 sval = val / 10; 232 } else 233 sval = val; 234 do { 235 *--cp = to_char(sval % 10); 236 ndig++; 237 /* 238 * If (*grp == CHAR_MAX) then no more grouping 239 * should be performed. 240 */ 241 if (needgrp && ndig == *grp && *grp != CHAR_MAX 242 && sval > 9) { 243 *--cp = thousep; 244 ndig = 0; 245 /* 246 * If (*(grp+1) == '\0') then we have to 247 * use *grp character (last grouping rule) 248 * for all next cases 249 */ 250 if (*(grp+1) != '\0') 251 grp++; 252 } 253 sval /= 10; 254 } while (sval != 0); 255 break; 256 257 case 8: 258 do { 259 *--cp = to_char(val & 7); 260 val >>= 3; 261 } while (val); 262 if (octzero && *cp != '0') 263 *--cp = '0'; 264 break; 265 266 case 16: 267 do { 268 *--cp = xdigs[(size_t)val & 15]; 269 val >>= 4; 270 } while (val); 271 break; 272 273 default: /* oops */ 274 abort(); 275 } 276 return (cp); 277 } 278 279 /* Identical to __ultoa, but for intmax_t. */ 280 static wchar_t * 281 __ujtoa(uintmax_t val, wchar_t *endp, int base, int octzero, 282 const char *xdigs, int needgrp, char thousep, const char *grp) 283 { 284 wchar_t *cp = endp; 285 intmax_t sval; 286 int ndig; 287 288 /* quick test for small values; __ultoa is typically much faster */ 289 /* (perhaps instead we should run until small, then call __ultoa?) */ 290 if (val <= ULONG_MAX) 291 return (__ultoa((u_long)val, endp, base, octzero, xdigs, 292 needgrp, thousep, grp)); 293 switch (base) { 294 case 10: 295 if (val < 10) { 296 *--cp = to_char(val % 10); 297 return (cp); 298 } 299 ndig = 0; 300 if (val > INTMAX_MAX) { 301 *--cp = to_char(val % 10); 302 ndig++; 303 sval = val / 10; 304 } else 305 sval = val; 306 do { 307 *--cp = to_char(sval % 10); 308 ndig++; 309 /* 310 * If (*grp == CHAR_MAX) then no more grouping 311 * should be performed. 312 */ 313 if (needgrp && *grp != CHAR_MAX && ndig == *grp 314 && sval > 9) { 315 *--cp = thousep; 316 ndig = 0; 317 /* 318 * If (*(grp+1) == '\0') then we have to 319 * use *grp character (last grouping rule) 320 * for all next cases 321 */ 322 if (*(grp+1) != '\0') 323 grp++; 324 } 325 sval /= 10; 326 } while (sval != 0); 327 break; 328 329 case 8: 330 do { 331 *--cp = to_char(val & 7); 332 val >>= 3; 333 } while (val); 334 if (octzero && *cp != '0') 335 *--cp = '0'; 336 break; 337 338 case 16: 339 do { 340 *--cp = xdigs[(size_t)val & 15]; 341 val >>= 4; 342 } while (val); 343 break; 344 345 default: 346 abort(); 347 } 348 return (cp); 349 } 350 351 /* 352 * Convert a multibyte character string argument for the %s format to a wide 353 * string representation. ``prec'' specifies the maximum number of bytes 354 * to output. If ``prec'' is greater than or equal to zero, we can't assume 355 * that the multibyte char. string ends in a null character. 356 */ 357 static wchar_t * 358 __mbsconv(char *mbsarg, int prec) 359 { 360 static const mbstate_t initial; 361 mbstate_t mbs; 362 wchar_t *convbuf, *wcp; 363 const char *p; 364 size_t insize, nchars, nconv; 365 366 if (mbsarg == NULL) 367 return (NULL); 368 369 /* 370 * Supplied argument is a multibyte string; convert it to wide 371 * characters first. 372 */ 373 if (prec >= 0) { 374 /* 375 * String is not guaranteed to be NUL-terminated. Find the 376 * number of characters to print. 377 */ 378 p = mbsarg; 379 insize = nchars = nconv = 0; 380 mbs = initial; 381 while (nchars != (size_t)prec) { 382 nconv = mbrlen(p, MB_CUR_MAX, &mbs); 383 if (nconv == 0 || nconv == (size_t)-1 || 384 nconv == (size_t)-2) 385 break; 386 p += nconv; 387 nchars++; 388 insize += nconv; 389 } 390 if (nconv == (size_t)-1 || nconv == (size_t)-2) 391 return (NULL); 392 } else 393 insize = strlen(mbsarg); 394 395 /* 396 * Allocate buffer for the result and perform the conversion, 397 * converting at most `size' bytes of the input multibyte string to 398 * wide characters for printing. 399 */ 400 convbuf = malloc((insize + 1) * sizeof(*convbuf)); 401 if (convbuf == NULL) 402 return (NULL); 403 wcp = convbuf; 404 p = mbsarg; 405 mbs = initial; 406 nconv = 0; 407 while (insize != 0) { 408 nconv = mbrtowc(wcp, p, insize, &mbs); 409 if (nconv == 0 || nconv == (size_t)-1 || nconv == (size_t)-2) 410 break; 411 wcp++; 412 p += nconv; 413 insize -= nconv; 414 } 415 if (nconv == (size_t)-1 || nconv == (size_t)-2) { 416 free(convbuf); 417 return (NULL); 418 } 419 *wcp = L'\0'; 420 421 return (convbuf); 422 } 423 424 /* 425 * MT-safe version 426 */ 427 int 428 vfwprintf(FILE * __restrict fp, const wchar_t * __restrict fmt0, va_list ap) 429 { 430 int ret; 431 432 FLOCKFILE(fp); 433 ret = __vfwprintf_unlocked(fp, fmt0, ap); 434 FUNLOCKFILE(fp); 435 return (ret); 436 } 437 438 #ifndef NO_FLOATING_POINT 439 440 #define dtoa __dtoa 441 #define freedtoa __freedtoa 442 443 #include <float.h> 444 #include <math.h> 445 #include "floatio.h" 446 447 #define DEFPREC 6 448 449 static int exponent(wchar_t *, int, wchar_t); 450 static wchar_t *cvt(double, int, int, char *, int *, int, int *); 451 452 #endif /* !NO_FLOATING_POINT */ 453 454 /* 455 * The size of the buffer we use as scratch space for integer 456 * conversions, among other things. Technically, we would need the 457 * most space for base 10 conversions with thousands' grouping 458 * characters between each pair of digits. 100 bytes is a 459 * conservative overestimate even for a 128-bit uintmax_t. 460 */ 461 #define BUF 100 462 463 #define STATIC_ARG_TBL_SIZE 8 /* Size of static argument table. */ 464 465 /* 466 * Flags used during conversion. 467 */ 468 #define ALT 0x001 /* alternate form */ 469 #define LADJUST 0x004 /* left adjustment */ 470 #define LONGDBL 0x008 /* long double */ 471 #define LONGINT 0x010 /* long integer */ 472 #define LLONGINT 0x020 /* quad_t integer */ 473 #define SHORTINT 0x040 /* short integer */ 474 #define ZEROPAD 0x080 /* zero (as opposed to blank) pad */ 475 #define FPT 0x100 /* Floating point number */ 476 #define GROUPING 0x200 /* use grouping ("'" flag) */ 477 /* C99 additional size modifiers: */ 478 #define SIZET 0x400 /* size_t */ 479 #define PTRDIFFT 0x800 /* ptrdiff_t */ 480 #define INTMAXT 0x1000 /* intmax_t */ 481 #define CHARINT 0x2000 /* print char using int format */ 482 483 /* 484 * Non-MT-safe version 485 */ 486 int 487 __vfwprintf_unlocked(FILE *fp, const wchar_t *fmt0, va_list ap) 488 { 489 wchar_t *fmt; /* format string */ 490 wchar_t ch; /* character from fmt */ 491 int n, n2, n3; /* handy integer (short term usage) */ 492 wchar_t *cp; /* handy char pointer (short term usage) */ 493 int flags; /* flags as above */ 494 int ret; /* return value accumulator */ 495 int width; /* width from format (%8d), or 0 */ 496 int prec; /* precision from format; <0 for N/A */ 497 wchar_t sign; /* sign prefix (' ', '+', '-', or \0) */ 498 char thousands_sep; /* locale specific thousands separator */ 499 const char *grouping; /* locale specific numeric grouping rules */ 500 #ifndef NO_FLOATING_POINT 501 /* 502 * We can decompose the printed representation of floating 503 * point numbers into several parts, some of which may be empty: 504 * 505 * [+|-| ] [0x|0X] MMM . NNN [e|E|p|P] [+|-] ZZ 506 * A B ---C--- D E F 507 * 508 * A: 'sign' holds this value if present; '\0' otherwise 509 * B: ox[1] holds the 'x' or 'X'; '\0' if not hexadecimal 510 * C: cp points to the string MMMNNN. Leading and trailing 511 * zeros are not in the string and must be added. 512 * D: expchar holds this character; '\0' if no exponent, e.g. %f 513 * F: at least two digits for decimal, at least one digit for hex 514 */ 515 char *decimal_point; /* locale specific decimal point */ 516 #ifdef notyet 517 int signflag; /* true if float is negative */ 518 union { /* floating point arguments %[aAeEfFgG] */ 519 double dbl; 520 long double ldbl; 521 } fparg; 522 char *dtoaend; /* pointer to end of converted digits */ 523 char *dtoaresult; /* buffer allocated by dtoa */ 524 #else 525 double _double; /* double precision arguments %[eEfgG] */ 526 char softsign; /* temporary negative sign for floats */ 527 #endif 528 int expt; /* integer value of exponent */ 529 char expchar; /* exponent character: [eEpP\0] */ 530 int expsize; /* character count for expstr */ 531 int lead; /* sig figs before decimal or group sep */ 532 int ndig; /* actual number of digits returned by dtoa */ 533 wchar_t expstr[MAXEXPDIG+2]; /* buffer for exponent string: e+ZZZ */ 534 int nseps; /* number of group separators with ' */ 535 int nrepeats; /* number of repeats of the last group */ 536 #endif 537 u_long ulval; /* integer arguments %[diouxX] */ 538 uintmax_t ujval; /* %j, %ll, %q, %t, %z integers */ 539 int base; /* base for [diouxX] conversion */ 540 int dprec; /* a copy of prec if [diouxX], 0 otherwise */ 541 int realsz; /* field size expanded by dprec, sign, etc */ 542 int size; /* size of converted field or string */ 543 int prsize; /* max size of printed field */ 544 const char *xdigs; /* digits for [xX] conversion */ 545 wchar_t buf[BUF]; /* buffer with space for digits of uintmax_t */ 546 wchar_t ox[2]; /* space for 0x hex-prefix */ 547 union arg *argtable; /* args, built due to positional arg */ 548 union arg statargtable [STATIC_ARG_TBL_SIZE]; 549 int nextarg; /* 1-based argument index */ 550 va_list orgap; /* original argument pointer */ 551 wchar_t *convbuf; /* multibyte to wide conversion result */ 552 553 /* 554 * Choose PADSIZE to trade efficiency vs. size. If larger printf 555 * fields occur frequently, increase PADSIZE and make the initialisers 556 * below longer. 557 */ 558 #define PADSIZE 16 /* pad chunk size */ 559 static wchar_t blanks[PADSIZE] = 560 {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '}; 561 static wchar_t zeroes[PADSIZE] = 562 {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'}; 563 564 static const char xdigs_lower[16] = "0123456789abcdef"; 565 static const char xdigs_upper[16] = "0123456789ABCDEF"; 566 567 /* 568 * BEWARE, these `goto error' on error, PRINT uses `n2' and 569 * PAD uses `n'. 570 */ 571 #define PRINT(ptr, len) do { \ 572 for (n3 = 0; n3 < (len); n3++) \ 573 __xfputwc((ptr)[n3], fp); \ 574 } while (/*CONSTCOND*/0) 575 #define PAD(howmany, with) do { \ 576 if ((n = (howmany)) > 0) { \ 577 while (n > PADSIZE) { \ 578 PRINT(with, PADSIZE); \ 579 n -= PADSIZE; \ 580 } \ 581 PRINT(with, n); \ 582 } \ 583 } while (/*CONSTCOND*/0) 584 #define PRINTANDPAD(p, ep, len, with) do { \ 585 n2 = (ep) - (p); \ 586 if (n2 > (len)) \ 587 n2 = (len); \ 588 if (n2 > 0) \ 589 PRINT((p), n2); \ 590 PAD((len) - (n2 > 0 ? n2 : 0), (with)); \ 591 } while(/*CONSTCOND*/0) 592 593 /* 594 * Get the argument indexed by nextarg. If the argument table is 595 * built, use it to get the argument. If its not, get the next 596 * argument (and arguments must be gotten sequentially). 597 */ 598 #define GETARG(type) \ 599 ((/*CONSTCOND*/argtable != NULL) ? *((type*)(void*)(&argtable[nextarg++])) : \ 600 (nextarg++, va_arg(ap, type))) 601 602 /* 603 * To extend shorts properly, we need both signed and unsigned 604 * argument extraction methods. 605 */ 606 #define SARG() \ 607 (flags&LONGINT ? GETARG(long) : \ 608 flags&SHORTINT ? (long)(short)GETARG(int) : \ 609 flags&CHARINT ? (long)(signed char)GETARG(int) : \ 610 (long)GETARG(int)) 611 #define UARG() \ 612 (flags&LONGINT ? GETARG(u_long) : \ 613 flags&SHORTINT ? (u_long)(u_short)GETARG(int) : \ 614 flags&CHARINT ? (u_long)(u_char)GETARG(int) : \ 615 (u_long)GETARG(u_int)) 616 #define INTMAX_SIZE (INTMAXT|SIZET|PTRDIFFT|LLONGINT) 617 #define SJARG() \ 618 (flags&INTMAXT ? GETARG(intmax_t) : \ 619 flags&SIZET ? (intmax_t)GETARG(size_t) : \ 620 flags&PTRDIFFT ? (intmax_t)GETARG(ptrdiff_t) : \ 621 (intmax_t)GETARG(quad_t)) 622 #define UJARG() \ 623 (flags&INTMAXT ? GETARG(uintmax_t) : \ 624 flags&SIZET ? (uintmax_t)GETARG(size_t) : \ 625 flags&PTRDIFFT ? (uintmax_t)GETARG(ptrdiff_t) : \ 626 (uintmax_t)GETARG(u_quad_t)) 627 628 /* 629 * Get * arguments, including the form *nn$. Preserve the nextarg 630 * that the argument can be gotten once the type is determined. 631 */ 632 #define GETASTER(val) \ 633 n2 = 0; \ 634 cp = fmt; \ 635 while (is_digit(*cp)) { \ 636 n2 = 10 * n2 + to_digit(*cp); \ 637 cp++; \ 638 } \ 639 if (*cp == '$') { \ 640 int hold = nextarg; \ 641 if (argtable == NULL) { \ 642 argtable = statargtable; \ 643 __find_arguments (fmt0, orgap, &argtable); \ 644 } \ 645 nextarg = n2; \ 646 val = GETARG (int); \ 647 nextarg = hold; \ 648 fmt = ++cp; \ 649 } else { \ 650 val = GETARG (int); \ 651 } 652 653 654 thousands_sep = '\0'; 655 grouping = NULL; 656 #ifndef NO_FLOATING_POINT 657 decimal_point = localeconv()->decimal_point; 658 expsize = 0; /* XXXGCC -Wuninitialized [sh3,m68000] */ 659 #endif 660 convbuf = NULL; 661 /* sorry, fwprintf(read_only_file, L"") returns WEOF, not 0 */ 662 if (cantwrite(fp)) { 663 errno = EBADF; 664 return (WEOF); 665 } 666 667 /* optimise fprintf(stderr) (and other unbuffered Unix files) */ 668 if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) && 669 fp->_file >= 0) 670 return (__sbprintf(fp, fmt0, ap)); 671 672 fmt = (wchar_t *)__UNCONST(fmt0); 673 argtable = NULL; 674 nextarg = 1; 675 va_copy(orgap, ap); 676 ret = 0; 677 678 /* 679 * Scan the format for conversions (`%' character). 680 */ 681 for (;;) { 682 const wchar_t *result; 683 684 for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++) 685 /* void */; 686 if ((n = fmt - cp) != 0) { 687 if ((unsigned)ret + n > INT_MAX) { 688 ret = EOF; 689 goto error; 690 } 691 PRINT(cp, n); 692 ret += n; 693 } 694 if (ch == '\0') 695 goto done; 696 fmt++; /* skip over '%' */ 697 698 flags = 0; 699 dprec = 0; 700 width = 0; 701 prec = -1; 702 sign = '\0'; 703 ox[1] = '\0'; 704 expchar = '\0'; 705 lead = 0; 706 nseps = nrepeats = 0; 707 ulval = 0; 708 ujval = 0; 709 xdigs = NULL; 710 711 rflag: ch = *fmt++; 712 reswitch: switch (ch) { 713 case ' ': 714 /*- 715 * ``If the space and + flags both appear, the space 716 * flag will be ignored.'' 717 * -- ANSI X3J11 718 */ 719 if (!sign) 720 sign = ' '; 721 goto rflag; 722 case '#': 723 flags |= ALT; 724 goto rflag; 725 case '*': 726 /*- 727 * ``A negative field width argument is taken as a 728 * - flag followed by a positive field width.'' 729 * -- ANSI X3J11 730 * They don't exclude field widths read from args. 731 */ 732 GETASTER (width); 733 if (width >= 0) 734 goto rflag; 735 width = -width; 736 /* FALLTHROUGH */ 737 case '-': 738 flags |= LADJUST; 739 goto rflag; 740 case '+': 741 sign = '+'; 742 goto rflag; 743 case '\'': 744 flags |= GROUPING; 745 thousands_sep = *(localeconv()->thousands_sep); 746 grouping = localeconv()->grouping; 747 goto rflag; 748 case '.': 749 if ((ch = *fmt++) == '*') { 750 GETASTER (prec); 751 goto rflag; 752 } 753 prec = 0; 754 while (is_digit(ch)) { 755 prec = 10 * prec + to_digit(ch); 756 ch = *fmt++; 757 } 758 goto reswitch; 759 case '0': 760 /*- 761 * ``Note that 0 is taken as a flag, not as the 762 * beginning of a field width.'' 763 * -- ANSI X3J11 764 */ 765 flags |= ZEROPAD; 766 goto rflag; 767 case '1': case '2': case '3': case '4': 768 case '5': case '6': case '7': case '8': case '9': 769 n = 0; 770 do { 771 n = 10 * n + to_digit(ch); 772 ch = *fmt++; 773 } while (is_digit(ch)); 774 if (ch == '$') { 775 nextarg = n; 776 if (argtable == NULL) { 777 argtable = statargtable; 778 __find_arguments (fmt0, orgap, 779 &argtable); 780 } 781 goto rflag; 782 } 783 width = n; 784 goto reswitch; 785 #ifndef NO_FLOATING_POINT 786 case 'L': 787 flags |= LONGDBL; 788 goto rflag; 789 #endif 790 case 'h': 791 if (flags & SHORTINT) { 792 flags &= ~SHORTINT; 793 flags |= CHARINT; 794 } else 795 flags |= SHORTINT; 796 goto rflag; 797 case 'j': 798 flags |= INTMAXT; 799 goto rflag; 800 case 'l': 801 if (flags & LONGINT) { 802 flags &= ~LONGINT; 803 flags |= LLONGINT; 804 } else 805 flags |= LONGINT; 806 goto rflag; 807 case 'q': 808 flags |= LLONGINT; /* not necessarily */ 809 goto rflag; 810 case 't': 811 flags |= PTRDIFFT; 812 goto rflag; 813 case 'z': 814 flags |= SIZET; 815 goto rflag; 816 case 'C': 817 flags |= LONGINT; 818 /*FALLTHROUGH*/ 819 case 'c': 820 if (flags & LONGINT) 821 *buf = (wchar_t)GETARG(wint_t); 822 else 823 *buf = (wchar_t)btowc(GETARG(int)); 824 result = buf; 825 size = 1; 826 sign = '\0'; 827 break; 828 case 'D': 829 flags |= LONGINT; 830 /*FALLTHROUGH*/ 831 case 'd': 832 case 'i': 833 if (flags & INTMAX_SIZE) { 834 ujval = SJARG(); 835 if ((intmax_t)ujval < 0) { 836 ujval = -ujval; 837 sign = '-'; 838 } 839 } else { 840 ulval = SARG(); 841 if ((long)ulval < 0) { 842 ulval = -ulval; 843 sign = '-'; 844 } 845 } 846 base = 10; 847 goto number; 848 #ifndef NO_FLOATING_POINT 849 #ifdef notyet 850 case 'a': 851 case 'A': 852 if (ch == 'a') { 853 ox[1] = 'x'; 854 xdigs = xdigs_lower; 855 expchar = 'p'; 856 } else { 857 ox[1] = 'X'; 858 xdigs = xdigs_upper; 859 expchar = 'P'; 860 } 861 if (prec >= 0) 862 prec++; 863 if (flags & LONGDBL) { 864 fparg.ldbl = GETARG(long double); 865 dtoaresult = 866 __hldtoa(fparg.ldbl, xdigs, prec, 867 &expt, &signflag, &dtoaend); 868 } else { 869 fparg.dbl = GETARG(double); 870 dtoaresult = 871 __hdtoa(fparg.dbl, xdigs, prec, 872 &expt, &signflag, &dtoaend); 873 } 874 875 if (prec < 0) 876 prec = dtoaend - dtoaresult; 877 if (expt == INT_MAX) 878 ox[1] = '\0'; 879 if (convbuf != NULL) 880 free(convbuf); 881 ndig = dtoaend - dtoaresult; 882 result = convbuf = __mbsconv(dtoaresult, -1); 883 freedtoa(dtoaresult); 884 goto fp_common; 885 case 'e': 886 case 'E': 887 expchar = ch; 888 if (prec < 0) /* account for digit before decpt */ 889 prec = DEFPREC + 1; 890 else 891 prec++; 892 goto fp_begin; 893 case 'f': 894 case 'F': 895 expchar = '\0'; 896 goto fp_begin; 897 case 'g': 898 case 'G': 899 expchar = ch - ('g' - 'e'); 900 if (prec == 0) 901 prec = 1; 902 fp_begin: 903 if (prec < 0) 904 prec = DEFPREC; 905 if (convbuf != NULL) 906 free(convbuf); 907 if (flags & LONGDBL) { 908 fparg.ldbl = GETARG(long double); 909 dtoaresult = 910 __ldtoa(&fparg.ldbl, expchar ? 2 : 3, prec, 911 &expt, &signflag, &dtoaend); 912 } else { 913 fparg.dbl = GETARG(double); 914 dtoaresult = 915 dtoa(fparg.dbl, expchar ? 2 : 3, prec, 916 &expt, &signflag, &dtoaend); 917 if (expt == 9999) 918 expt = INT_MAX; 919 } 920 ndig = dtoaend - dtoaresult; 921 result = convbuf = __mbsconv(dtoaresult, -1); 922 freedtoa(dtoaresult); 923 fp_common: 924 if (signflag) 925 sign = '-'; 926 if (expt == INT_MAX) { /* inf or nan */ 927 if (*result == 'N') { 928 result = (ch >= 'a') ? L"nan" : L"NAN"; 929 sign = '\0'; 930 } else 931 result = (ch >= 'a') ? L"inf" : L"INF"; 932 size = 3; 933 break; 934 } 935 #else 936 case 'e': 937 case 'E': 938 case 'f': 939 case 'F': 940 case 'g': 941 case 'G': 942 if (prec == -1) { 943 prec = DEFPREC; 944 } else if ((ch == 'g' || ch == 'G') && prec == 0) { 945 prec = 1; 946 } 947 948 if (flags & LONGDBL) { 949 _double = (double) GETARG(long double); 950 } else { 951 _double = GETARG(double); 952 } 953 954 /* do this before tricky precision changes */ 955 if (isinf(_double)) { 956 if (_double < 0) 957 sign = '-'; 958 if (ch == 'E' || ch == 'F' || ch == 'G') 959 result = L"INF"; 960 else 961 result = L"inf"; 962 size = 3; 963 break; 964 } 965 if (isnan(_double)) { 966 if (ch == 'E' || ch == 'F' || ch == 'G') 967 result = L"NAN"; 968 else 969 result = L"nan"; 970 size = 3; 971 break; 972 } 973 974 flags |= FPT; 975 result = cvt(_double, prec, flags, &softsign, 976 &expt, ch, &ndig); 977 if (softsign) 978 sign = '-'; 979 #endif 980 flags |= FPT; 981 if (ch == 'g' || ch == 'G') { 982 if (expt > -4 && expt <= prec) { 983 /* Make %[gG] smell like %[fF] */ 984 expchar = '\0'; 985 if (flags & ALT) 986 prec -= expt; 987 else 988 prec = ndig - expt; 989 if (prec < 0) 990 prec = 0; 991 } else { 992 /* 993 * Make %[gG] smell like %[eE], but 994 * trim trailing zeroes if no # flag. 995 */ 996 if (!(flags & ALT)) 997 prec = ndig; 998 } 999 } 1000 if (expchar) { 1001 expsize = exponent(expstr, expt - 1, expchar); 1002 size = expsize + prec; 1003 if (prec > 1 || flags & ALT) 1004 ++size; 1005 } else { 1006 /* space for digits before decimal point */ 1007 if (expt > 0) 1008 size = expt; 1009 else /* "0" */ 1010 size = 1; 1011 /* space for decimal pt and following digits */ 1012 if (prec || flags & ALT) 1013 size += prec + 1; 1014 if (grouping && expt > 0) { 1015 /* space for thousands' grouping */ 1016 nseps = nrepeats = 0; 1017 lead = expt; 1018 while (*grouping != CHAR_MAX) { 1019 if (lead <= *grouping) 1020 break; 1021 lead -= *grouping; 1022 if (*(grouping+1)) { 1023 nseps++; 1024 grouping++; 1025 } else 1026 nrepeats++; 1027 } 1028 size += nseps + nrepeats; 1029 } else 1030 lead = expt; 1031 } 1032 break; 1033 #endif /* !NO_FLOATING_POINT */ 1034 case 'n': 1035 /* 1036 * Assignment-like behavior is specified if the 1037 * value overflows or is otherwise unrepresentable. 1038 * C99 says to use `signed char' for %hhn conversions. 1039 */ 1040 if (flags & LLONGINT) 1041 *GETARG(quad_t *) = ret; 1042 else if (flags & SIZET) 1043 *GETARG(ssize_t *) = (ssize_t)ret; 1044 else if (flags & PTRDIFFT) 1045 *GETARG(ptrdiff_t *) = ret; 1046 else if (flags & INTMAXT) 1047 *GETARG(intmax_t *) = ret; 1048 else if (flags & LONGINT) 1049 *GETARG(long *) = ret; 1050 else if (flags & SHORTINT) 1051 *GETARG(short *) = ret; 1052 else if (flags & CHARINT) 1053 *GETARG(signed char *) = ret; 1054 else 1055 *GETARG(int *) = ret; 1056 continue; /* no output */ 1057 case 'O': 1058 flags |= LONGINT; 1059 /*FALLTHROUGH*/ 1060 case 'o': 1061 if (flags & INTMAX_SIZE) 1062 ujval = UJARG(); 1063 else 1064 ulval = UARG(); 1065 base = 8; 1066 goto nosign; 1067 case 'p': 1068 /*- 1069 * ``The argument shall be a pointer to void. The 1070 * value of the pointer is converted to a sequence 1071 * of printable characters, in an implementation- 1072 * defined manner.'' 1073 * -- ANSI X3J11 1074 */ 1075 ujval = (uintmax_t)(uintptr_t)GETARG(void *); 1076 base = 16; 1077 xdigs = xdigs_lower; 1078 flags = flags | INTMAXT; 1079 ox[1] = 'x'; 1080 goto nosign; 1081 case 'S': 1082 flags |= LONGINT; 1083 /*FALLTHROUGH*/ 1084 case 's': 1085 if (flags & LONGINT) { 1086 if ((result = GETARG(wchar_t *)) == NULL) 1087 result = L"(null)"; 1088 } else { 1089 char *mbp; 1090 1091 if (convbuf != NULL) 1092 free(convbuf); 1093 if ((mbp = GETARG(char *)) == NULL) 1094 result = L"(null)"; 1095 else { 1096 convbuf = __mbsconv(mbp, prec); 1097 if (convbuf == NULL) { 1098 fp->_flags |= __SERR; 1099 goto error; 1100 } 1101 result = convbuf; 1102 } 1103 } 1104 1105 if (prec >= 0) { 1106 /* 1107 * can't use wcslen; can only look for the 1108 * NUL in the first `prec' characters, and 1109 * wcslen() will go further. 1110 */ 1111 wchar_t *p = wmemchr(result, 0, (size_t)prec); 1112 1113 if (p != NULL) { 1114 size = p - result; 1115 if (size > prec) 1116 size = prec; 1117 } else 1118 size = prec; 1119 } else 1120 size = wcslen(result); 1121 sign = '\0'; 1122 break; 1123 case 'U': 1124 flags |= LONGINT; 1125 /*FALLTHROUGH*/ 1126 case 'u': 1127 if (flags & INTMAX_SIZE) 1128 ujval = UJARG(); 1129 else 1130 ulval = UARG(); 1131 base = 10; 1132 goto nosign; 1133 case 'X': 1134 xdigs = xdigs_upper; 1135 goto hex; 1136 case 'x': 1137 xdigs = xdigs_lower; 1138 hex: 1139 if (flags & INTMAX_SIZE) 1140 ujval = UJARG(); 1141 else 1142 ulval = UARG(); 1143 base = 16; 1144 /* leading 0x/X only if non-zero */ 1145 if (flags & ALT && 1146 (flags & INTMAX_SIZE ? ujval != 0 : ulval != 0)) 1147 ox[1] = ch; 1148 1149 flags &= ~GROUPING; 1150 /* unsigned conversions */ 1151 nosign: sign = '\0'; 1152 /*- 1153 * ``... diouXx conversions ... if a precision is 1154 * specified, the 0 flag will be ignored.'' 1155 * -- ANSI X3J11 1156 */ 1157 number: if ((dprec = prec) >= 0) 1158 flags &= ~ZEROPAD; 1159 1160 /*- 1161 * ``The result of converting a zero value with an 1162 * explicit precision of zero is no characters.'' 1163 * -- ANSI X3J11 1164 * 1165 * ``The C Standard is clear enough as is. The call 1166 * printf("%#.0o", 0) should print 0.'' 1167 * -- Defect Report #151 1168 */ 1169 result = cp = buf + BUF; 1170 if (flags & INTMAX_SIZE) { 1171 if (ujval != 0 || prec != 0 || 1172 (flags & ALT && base == 8)) 1173 result = __ujtoa(ujval, cp, base, 1174 flags & ALT, xdigs, 1175 flags & GROUPING, thousands_sep, 1176 grouping); 1177 } else { 1178 if (ulval != 0 || prec != 0 || 1179 (flags & ALT && base == 8)) 1180 result = __ultoa(ulval, cp, base, 1181 flags & ALT, xdigs, 1182 flags & GROUPING, thousands_sep, 1183 grouping); 1184 } 1185 size = buf + BUF - result; 1186 if (size > BUF) /* should never happen */ 1187 abort(); 1188 break; 1189 default: /* "%?" prints ?, unless ? is NUL */ 1190 if (ch == '\0') 1191 goto done; 1192 /* pretend it was %c with argument ch */ 1193 *buf = ch; 1194 result = buf; 1195 size = 1; 1196 sign = '\0'; 1197 break; 1198 } 1199 1200 /* 1201 * All reasonable formats wind up here. At this point, `result' 1202 * points to a string which (if not flags&LADJUST) should be 1203 * padded out to `width' places. If flags&ZEROPAD, it should 1204 * first be prefixed by any sign or other prefix; otherwise, 1205 * it should be blank padded before the prefix is emitted. 1206 * After any left-hand padding and prefixing, emit zeroes 1207 * required by a decimal [diouxX] precision, then print the 1208 * string proper, then emit zeroes required by any leftover 1209 * floating precision; finally, if LADJUST, pad with blanks. 1210 * 1211 * Compute actual size, so we know how much to pad. 1212 * size excludes decimal prec; realsz includes it. 1213 */ 1214 realsz = dprec > size ? dprec : size; 1215 if (sign) 1216 realsz++; 1217 if (ox[1]) 1218 realsz += 2; 1219 1220 prsize = width > realsz ? width : realsz; 1221 if ((unsigned)ret + prsize > INT_MAX) { 1222 ret = EOF; 1223 goto error; 1224 } 1225 1226 /* right-adjusting blank padding */ 1227 if ((flags & (LADJUST|ZEROPAD)) == 0) 1228 PAD(width - realsz, blanks); 1229 1230 /* prefix */ 1231 if (sign) 1232 PRINT(&sign, 1); 1233 1234 if (ox[1]) { /* ox[1] is either x, X, or \0 */ 1235 ox[0] = '0'; 1236 PRINT(ox, 2); 1237 } 1238 1239 /* right-adjusting zero padding */ 1240 if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD) 1241 PAD(width - realsz, zeroes); 1242 1243 /* leading zeroes from decimal precision */ 1244 PAD(dprec - size, zeroes); 1245 1246 /* the string or number proper */ 1247 #ifndef NO_FLOATING_POINT 1248 if ((flags & FPT) == 0) { 1249 PRINT(result, size); 1250 } else { /* glue together f_p fragments */ 1251 if (!expchar) { /* %[fF] or sufficiently short %[gG] */ 1252 if (expt <= 0) { 1253 PRINT(zeroes, 1); 1254 if (prec || flags & ALT) 1255 PRINT(decimal_point, 1); 1256 PAD(-expt, zeroes); 1257 /* already handled initial 0's */ 1258 prec += expt; 1259 } else { 1260 PRINTANDPAD(result, convbuf + ndig, 1261 lead, zeroes); 1262 result += lead; 1263 if (grouping) { 1264 while (nseps>0 || nrepeats>0) { 1265 if (nrepeats > 0) 1266 nrepeats--; 1267 else { 1268 grouping--; 1269 nseps--; 1270 } 1271 PRINT(&thousands_sep, 1272 1); 1273 PRINTANDPAD(result, 1274 convbuf + ndig, 1275 *grouping, zeroes); 1276 result += *grouping; 1277 } 1278 if (result > convbuf + ndig) 1279 result = convbuf + ndig; 1280 } 1281 if (prec || flags & ALT) { 1282 buf[0] = *decimal_point; 1283 PRINT(buf, 1); 1284 } 1285 } 1286 PRINTANDPAD(result, convbuf + ndig, prec, 1287 zeroes); 1288 } else { /* %[eE] or sufficiently long %[gG] */ 1289 if (prec > 1 || flags & ALT) { 1290 buf[0] = *result++; 1291 buf[1] = *decimal_point; 1292 PRINT(buf, 2); 1293 PRINT(result, ndig-1); 1294 PAD(prec - ndig, zeroes); 1295 } else /* XeYYY */ 1296 PRINT(result, 1); 1297 PRINT(expstr, expsize); 1298 } 1299 } 1300 #else 1301 PRINT(result, size); 1302 #endif 1303 /* left-adjusting padding (always blank) */ 1304 if (flags & LADJUST) 1305 PAD(width - realsz, blanks); 1306 1307 /* finally, adjust ret */ 1308 ret += prsize; 1309 } 1310 done: 1311 error: 1312 va_end(orgap); 1313 if (convbuf != NULL) 1314 free(convbuf); 1315 if (__sferror(fp)) 1316 ret = EOF; 1317 if ((argtable != NULL) && (argtable != statargtable)) 1318 free (argtable); 1319 return (ret); 1320 /* NOTREACHED */ 1321 } 1322 1323 /* 1324 * Find all arguments when a positional parameter is encountered. Returns a 1325 * table, indexed by argument number, of pointers to each arguments. The 1326 * initial argument table should be an array of STATIC_ARG_TBL_SIZE entries. 1327 * It will be replaces with a malloc-ed one if it overflows. 1328 */ 1329 static void 1330 __find_arguments (const wchar_t *fmt0, va_list ap, union arg **argtable) 1331 { 1332 wchar_t *fmt; /* format string */ 1333 wchar_t ch; /* character from fmt */ 1334 int n, n2; /* handy integer (short term usage) */ 1335 wchar_t *cp; /* handy char pointer (short term usage) */ 1336 int flags; /* flags as above */ 1337 enum typeid *typetable; /* table of types */ 1338 enum typeid stattypetable [STATIC_ARG_TBL_SIZE]; 1339 int tablesize; /* current size of type table */ 1340 int tablemax; /* largest used index in table */ 1341 int nextarg; /* 1-based argument index */ 1342 1343 /* 1344 * Add an argument type to the table, expanding if necessary. 1345 */ 1346 #define ADDTYPE(type) \ 1347 /*LINTED null effect*/ \ 1348 (void)((nextarg >= tablesize) ? \ 1349 __grow_type_table(nextarg, &typetable, &tablesize) : (void)0, \ 1350 (nextarg > tablemax) ? tablemax = nextarg : 0, \ 1351 typetable[nextarg++] = type) 1352 1353 #define ADDSARG() \ 1354 (void)((flags&INTMAXT) ? ADDTYPE(T_INTMAXT) : \ 1355 ((flags&SIZET) ? ADDTYPE(T_SIZET) : \ 1356 ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \ 1357 ((flags&LLONGINT) ? ADDTYPE(T_LLONG) : \ 1358 ((flags&LONGINT) ? ADDTYPE(T_LONG) : ADDTYPE(T_INT)))))) 1359 1360 #define ADDUARG() \ 1361 (void)((flags&INTMAXT) ? ADDTYPE(T_UINTMAXT) : \ 1362 ((flags&SIZET) ? ADDTYPE(T_SIZET) : \ 1363 ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \ 1364 ((flags&LLONGINT) ? ADDTYPE(T_U_LLONG) : \ 1365 ((flags&LONGINT) ? ADDTYPE(T_U_LONG) : ADDTYPE(T_U_INT)))))) 1366 1367 /* 1368 * Add * arguments to the type array. 1369 */ 1370 #define ADDASTER() \ 1371 n2 = 0; \ 1372 cp = fmt; \ 1373 while (is_digit(*cp)) { \ 1374 n2 = 10 * n2 + to_digit(*cp); \ 1375 cp++; \ 1376 } \ 1377 if (*cp == '$') { \ 1378 int hold = nextarg; \ 1379 nextarg = n2; \ 1380 ADDTYPE (T_INT); \ 1381 nextarg = hold; \ 1382 fmt = ++cp; \ 1383 } else { \ 1384 ADDTYPE (T_INT); \ 1385 } 1386 fmt = (wchar_t *)__UNCONST(fmt0); 1387 typetable = stattypetable; 1388 tablesize = STATIC_ARG_TBL_SIZE; 1389 tablemax = 0; 1390 nextarg = 1; 1391 for (n = 0; n < STATIC_ARG_TBL_SIZE; n++) 1392 typetable[n] = T_UNUSED; 1393 1394 /* 1395 * Scan the format for conversions (`%' character). 1396 */ 1397 for (;;) { 1398 for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++) 1399 /* void */; 1400 if (ch == '\0') 1401 goto done; 1402 fmt++; /* skip over '%' */ 1403 1404 flags = 0; 1405 1406 rflag: ch = *fmt++; 1407 reswitch: switch (ch) { 1408 case ' ': 1409 case '#': 1410 goto rflag; 1411 case '*': 1412 ADDASTER (); 1413 goto rflag; 1414 case '-': 1415 case '+': 1416 case '\'': 1417 goto rflag; 1418 case '.': 1419 if ((ch = *fmt++) == '*') { 1420 ADDASTER (); 1421 goto rflag; 1422 } 1423 while (is_digit(ch)) { 1424 ch = *fmt++; 1425 } 1426 goto reswitch; 1427 case '0': 1428 goto rflag; 1429 case '1': case '2': case '3': case '4': 1430 case '5': case '6': case '7': case '8': case '9': 1431 n = 0; 1432 do { 1433 n = 10 * n + to_digit(ch); 1434 ch = *fmt++; 1435 } while (is_digit(ch)); 1436 if (ch == '$') { 1437 nextarg = n; 1438 goto rflag; 1439 } 1440 goto reswitch; 1441 #ifndef NO_FLOATING_POINT 1442 case 'L': 1443 flags |= LONGDBL; 1444 goto rflag; 1445 #endif 1446 case 'h': 1447 if (flags & SHORTINT) { 1448 flags &= ~SHORTINT; 1449 flags |= CHARINT; 1450 } else 1451 flags |= SHORTINT; 1452 goto rflag; 1453 case 'j': 1454 flags |= INTMAXT; 1455 goto rflag; 1456 case 'l': 1457 if (flags & LONGINT) { 1458 flags &= ~LONGINT; 1459 flags |= LLONGINT; 1460 } else 1461 flags |= LONGINT; 1462 goto rflag; 1463 case 'q': 1464 flags |= LLONGINT; /* not necessarily */ 1465 goto rflag; 1466 case 't': 1467 flags |= PTRDIFFT; 1468 goto rflag; 1469 case 'z': 1470 flags |= SIZET; 1471 goto rflag; 1472 case 'C': 1473 flags |= LONGINT; 1474 /*FALLTHROUGH*/ 1475 case 'c': 1476 if (flags & LONGINT) 1477 ADDTYPE(T_WINT); 1478 else 1479 ADDTYPE(T_INT); 1480 break; 1481 case 'D': 1482 flags |= LONGINT; 1483 /*FALLTHROUGH*/ 1484 case 'd': 1485 case 'i': 1486 ADDSARG(); 1487 break; 1488 #ifndef NO_FLOATING_POINT 1489 case 'a': 1490 case 'A': 1491 case 'e': 1492 case 'E': 1493 case 'f': 1494 case 'g': 1495 case 'G': 1496 if (flags & LONGDBL) 1497 ADDTYPE(T_LONG_DOUBLE); 1498 else 1499 ADDTYPE(T_DOUBLE); 1500 break; 1501 #endif /* !NO_FLOATING_POINT */ 1502 case 'n': 1503 if (flags & INTMAXT) 1504 ADDTYPE(TP_INTMAXT); 1505 else if (flags & PTRDIFFT) 1506 ADDTYPE(TP_PTRDIFFT); 1507 else if (flags & SIZET) 1508 ADDTYPE(TP_SIZET); 1509 else if (flags & LLONGINT) 1510 ADDTYPE(TP_LLONG); 1511 else if (flags & LONGINT) 1512 ADDTYPE(TP_LONG); 1513 else if (flags & SHORTINT) 1514 ADDTYPE(TP_SHORT); 1515 else if (flags & CHARINT) 1516 ADDTYPE(TP_SCHAR); 1517 else 1518 ADDTYPE(TP_INT); 1519 continue; /* no output */ 1520 case 'O': 1521 flags |= LONGINT; 1522 /*FALLTHROUGH*/ 1523 case 'o': 1524 ADDUARG(); 1525 break; 1526 case 'p': 1527 ADDTYPE(TP_VOID); 1528 break; 1529 case 'S': 1530 flags |= LONGINT; 1531 /*FALLTHROUGH*/ 1532 case 's': 1533 if (flags & LONGINT) 1534 ADDTYPE(TP_WCHAR); 1535 else 1536 ADDTYPE(TP_CHAR); 1537 break; 1538 case 'U': 1539 flags |= LONGINT; 1540 /*FALLTHROUGH*/ 1541 case 'u': 1542 case 'X': 1543 case 'x': 1544 ADDUARG(); 1545 break; 1546 default: /* "%?" prints ?, unless ? is NUL */ 1547 if (ch == '\0') 1548 goto done; 1549 break; 1550 } 1551 } 1552 done: 1553 /* 1554 * Build the argument table. 1555 */ 1556 if (tablemax >= STATIC_ARG_TBL_SIZE) { 1557 *argtable = (union arg *) 1558 malloc (sizeof (union arg) * (tablemax + 1)); 1559 } 1560 1561 (*argtable) [0].intarg = 0; 1562 for (n = 1; n <= tablemax; n++) { 1563 switch (typetable [n]) { 1564 case T_UNUSED: /* whoops! */ 1565 (*argtable) [n].intarg = va_arg (ap, int); 1566 break; 1567 case TP_SCHAR: 1568 (*argtable) [n].pschararg = va_arg (ap, signed char *); 1569 break; 1570 case TP_SHORT: 1571 (*argtable) [n].pshortarg = va_arg (ap, short *); 1572 break; 1573 case T_INT: 1574 (*argtable) [n].intarg = va_arg (ap, int); 1575 break; 1576 case T_U_INT: 1577 (*argtable) [n].uintarg = va_arg (ap, unsigned int); 1578 break; 1579 case TP_INT: 1580 (*argtable) [n].pintarg = va_arg (ap, int *); 1581 break; 1582 case T_LONG: 1583 (*argtable) [n].longarg = va_arg (ap, long); 1584 break; 1585 case T_U_LONG: 1586 (*argtable) [n].ulongarg = va_arg (ap, unsigned long); 1587 break; 1588 case TP_LONG: 1589 (*argtable) [n].plongarg = va_arg (ap, long *); 1590 break; 1591 case T_LLONG: 1592 (*argtable) [n].longlongarg = va_arg (ap, quad_t); 1593 break; 1594 case T_U_LLONG: 1595 (*argtable) [n].ulonglongarg = va_arg (ap, u_quad_t); 1596 break; 1597 case TP_LLONG: 1598 (*argtable) [n].plonglongarg = va_arg (ap, quad_t *); 1599 break; 1600 case T_PTRDIFFT: 1601 (*argtable) [n].ptrdiffarg = va_arg (ap, ptrdiff_t); 1602 break; 1603 case TP_PTRDIFFT: 1604 (*argtable) [n].pptrdiffarg = va_arg (ap, ptrdiff_t *); 1605 break; 1606 case T_SIZET: 1607 (*argtable) [n].sizearg = va_arg (ap, size_t); 1608 break; 1609 case TP_SIZET: 1610 (*argtable) [n].psizearg = va_arg (ap, size_t *); 1611 break; 1612 case T_INTMAXT: 1613 (*argtable) [n].intmaxarg = va_arg (ap, intmax_t); 1614 break; 1615 case T_UINTMAXT: 1616 (*argtable) [n].uintmaxarg = va_arg (ap, uintmax_t); 1617 break; 1618 case TP_INTMAXT: 1619 (*argtable) [n].pintmaxarg = va_arg (ap, intmax_t *); 1620 break; 1621 #ifndef NO_FLOATING_POINT 1622 case T_DOUBLE: 1623 (*argtable) [n].doublearg = va_arg (ap, double); 1624 break; 1625 case T_LONG_DOUBLE: 1626 (*argtable) [n].longdoublearg = va_arg (ap, long double); 1627 break; 1628 #endif 1629 case TP_CHAR: 1630 (*argtable) [n].pchararg = va_arg (ap, char *); 1631 break; 1632 case TP_VOID: 1633 (*argtable) [n].pvoidarg = va_arg (ap, void *); 1634 break; 1635 case T_WINT: 1636 (*argtable) [n].wintarg = va_arg (ap, wint_t); 1637 break; 1638 case TP_WCHAR: 1639 (*argtable) [n].pwchararg = va_arg (ap, wchar_t *); 1640 break; 1641 } 1642 } 1643 1644 if ((typetable != NULL) && (typetable != stattypetable)) 1645 free (typetable); 1646 } 1647 1648 /* 1649 * Increase the size of the type table. 1650 */ 1651 static void 1652 __grow_type_table (int nextarg, enum typeid **typetable, int *tablesize) 1653 { 1654 enum typeid *const oldtable = *typetable; 1655 const int oldsize = *tablesize; 1656 enum typeid *newtable; 1657 int n, newsize = oldsize * 2; 1658 1659 if (newsize < nextarg + 1) 1660 newsize = nextarg + 1; 1661 if (oldsize == STATIC_ARG_TBL_SIZE) { 1662 if ((newtable = malloc(newsize * sizeof(enum typeid))) == NULL) 1663 abort(); /* XXX handle better */ 1664 bcopy(oldtable, newtable, oldsize * sizeof(enum typeid)); 1665 } else { 1666 newtable = realloc(oldtable, newsize * sizeof(enum typeid)); 1667 if (newtable == NULL) 1668 abort(); /* XXX handle better */ 1669 } 1670 for (n = oldsize; n < newsize; n++) 1671 newtable[n] = T_UNUSED; 1672 1673 *typetable = newtable; 1674 *tablesize = newsize; 1675 } 1676 1677 1678 #ifndef NO_FLOATING_POINT 1679 static wchar_t * 1680 cvt(double value, int ndigits, int flags, char *sign, int *decpt, int ch, 1681 int *length) 1682 { 1683 int mode, dsgn; 1684 char *digits, *bp, *rve; 1685 static wchar_t buf[512]; 1686 1687 _DIAGASSERT(decpt != NULL); 1688 _DIAGASSERT(length != NULL); 1689 _DIAGASSERT(sign != NULL); 1690 1691 if (ch == 'f') { 1692 mode = 3; /* ndigits after the decimal point */ 1693 } else { 1694 /* To obtain ndigits after the decimal point for the 'e' 1695 * and 'E' formats, round to ndigits + 1 significant 1696 * figures. 1697 */ 1698 if (ch == 'e' || ch == 'E') { 1699 ndigits++; 1700 } 1701 mode = 2; /* ndigits significant digits */ 1702 } 1703 1704 digits = __dtoa(value, mode, ndigits, decpt, &dsgn, &rve); 1705 if (dsgn) { 1706 value = -value; 1707 *sign = '-'; 1708 } else 1709 *sign = '\000'; 1710 if ((ch != 'g' && ch != 'G') || flags & ALT) { /* Print trailing zeros */ 1711 bp = digits + ndigits; 1712 if (ch == 'f') { 1713 if (*digits == '0' && value) 1714 *decpt = -ndigits + 1; 1715 bp += *decpt; 1716 } 1717 if (value == 0) /* kludge for __dtoa irregularity */ 1718 rve = bp; 1719 while (rve < bp) 1720 *rve++ = '0'; 1721 } 1722 *length = rve - digits; 1723 (void)mbstowcs(buf, digits, sizeof(buf)/sizeof(buf[0])); 1724 return buf; 1725 } 1726 static int 1727 exponent(wchar_t *p0, int expo, wchar_t fmtch) 1728 { 1729 wchar_t *p, *t; 1730 wchar_t expbuf[MAXEXPDIG]; 1731 1732 p = p0; 1733 *p++ = fmtch; 1734 if (expo < 0) { 1735 expo = -expo; 1736 *p++ = '-'; 1737 } 1738 else 1739 *p++ = '+'; 1740 t = expbuf + MAXEXPDIG; 1741 if (expo > 9) { 1742 do { 1743 *--t = to_char(expo % 10); 1744 } while ((expo /= 10) > 9); 1745 *--t = to_char(expo); 1746 for (; t < expbuf + MAXEXPDIG; *p++ = *t++); 1747 } 1748 else { 1749 /* 1750 * Exponents for decimal floating point conversions 1751 * (%[eEgG]) must be at least two characters long, 1752 * whereas exponents for hexadecimal conversions can 1753 * be only one character long. 1754 */ 1755 if (fmtch == 'e' || fmtch == 'E') 1756 *p++ = '0'; 1757 *p++ = to_char(expo); 1758 } 1759 return (p - p0); 1760 } 1761 #endif /* !NO_FLOATING_POINT */ 1762