1 /* $NetBSD: vfwprintf.c,v 1.3 2005/06/15 09:31:27 he 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 1.3 2005/06/15 09:31:27 he 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 for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++) 683 /* void */; 684 if ((n = fmt - cp) != 0) { 685 if ((unsigned)ret + n > INT_MAX) { 686 ret = EOF; 687 goto error; 688 } 689 PRINT(cp, n); 690 ret += n; 691 } 692 if (ch == '\0') 693 goto done; 694 fmt++; /* skip over '%' */ 695 696 flags = 0; 697 dprec = 0; 698 width = 0; 699 prec = -1; 700 sign = '\0'; 701 ox[1] = '\0'; 702 expchar = '\0'; 703 lead = 0; 704 nseps = nrepeats = 0; 705 ulval = 0; 706 ujval = 0; 707 xdigs = NULL; 708 709 rflag: ch = *fmt++; 710 reswitch: switch (ch) { 711 case ' ': 712 /*- 713 * ``If the space and + flags both appear, the space 714 * flag will be ignored.'' 715 * -- ANSI X3J11 716 */ 717 if (!sign) 718 sign = ' '; 719 goto rflag; 720 case '#': 721 flags |= ALT; 722 goto rflag; 723 case '*': 724 /*- 725 * ``A negative field width argument is taken as a 726 * - flag followed by a positive field width.'' 727 * -- ANSI X3J11 728 * They don't exclude field widths read from args. 729 */ 730 GETASTER (width); 731 if (width >= 0) 732 goto rflag; 733 width = -width; 734 /* FALLTHROUGH */ 735 case '-': 736 flags |= LADJUST; 737 goto rflag; 738 case '+': 739 sign = '+'; 740 goto rflag; 741 case '\'': 742 flags |= GROUPING; 743 thousands_sep = *(localeconv()->thousands_sep); 744 grouping = localeconv()->grouping; 745 goto rflag; 746 case '.': 747 if ((ch = *fmt++) == '*') { 748 GETASTER (prec); 749 goto rflag; 750 } 751 prec = 0; 752 while (is_digit(ch)) { 753 prec = 10 * prec + to_digit(ch); 754 ch = *fmt++; 755 } 756 goto reswitch; 757 case '0': 758 /*- 759 * ``Note that 0 is taken as a flag, not as the 760 * beginning of a field width.'' 761 * -- ANSI X3J11 762 */ 763 flags |= ZEROPAD; 764 goto rflag; 765 case '1': case '2': case '3': case '4': 766 case '5': case '6': case '7': case '8': case '9': 767 n = 0; 768 do { 769 n = 10 * n + to_digit(ch); 770 ch = *fmt++; 771 } while (is_digit(ch)); 772 if (ch == '$') { 773 nextarg = n; 774 if (argtable == NULL) { 775 argtable = statargtable; 776 __find_arguments (fmt0, orgap, 777 &argtable); 778 } 779 goto rflag; 780 } 781 width = n; 782 goto reswitch; 783 #ifndef NO_FLOATING_POINT 784 case 'L': 785 flags |= LONGDBL; 786 goto rflag; 787 #endif 788 case 'h': 789 if (flags & SHORTINT) { 790 flags &= ~SHORTINT; 791 flags |= CHARINT; 792 } else 793 flags |= SHORTINT; 794 goto rflag; 795 case 'j': 796 flags |= INTMAXT; 797 goto rflag; 798 case 'l': 799 if (flags & LONGINT) { 800 flags &= ~LONGINT; 801 flags |= LLONGINT; 802 } else 803 flags |= LONGINT; 804 goto rflag; 805 case 'q': 806 flags |= LLONGINT; /* not necessarily */ 807 goto rflag; 808 case 't': 809 flags |= PTRDIFFT; 810 goto rflag; 811 case 'z': 812 flags |= SIZET; 813 goto rflag; 814 case 'C': 815 flags |= LONGINT; 816 /*FALLTHROUGH*/ 817 case 'c': 818 if (flags & LONGINT) 819 *(cp = buf) = (wchar_t)GETARG(wint_t); 820 else 821 *(cp = buf) = (wchar_t)btowc(GETARG(int)); 822 size = 1; 823 sign = '\0'; 824 break; 825 case 'D': 826 flags |= LONGINT; 827 /*FALLTHROUGH*/ 828 case 'd': 829 case 'i': 830 if (flags & INTMAX_SIZE) { 831 ujval = SJARG(); 832 if ((intmax_t)ujval < 0) { 833 ujval = -ujval; 834 sign = '-'; 835 } 836 } else { 837 ulval = SARG(); 838 if ((long)ulval < 0) { 839 ulval = -ulval; 840 sign = '-'; 841 } 842 } 843 base = 10; 844 goto number; 845 #ifndef NO_FLOATING_POINT 846 #ifdef notyet 847 case 'a': 848 case 'A': 849 if (ch == 'a') { 850 ox[1] = 'x'; 851 xdigs = xdigs_lower; 852 expchar = 'p'; 853 } else { 854 ox[1] = 'X'; 855 xdigs = xdigs_upper; 856 expchar = 'P'; 857 } 858 if (prec >= 0) 859 prec++; 860 if (flags & LONGDBL) { 861 fparg.ldbl = GETARG(long double); 862 dtoaresult = 863 __hldtoa(fparg.ldbl, xdigs, prec, 864 &expt, &signflag, &dtoaend); 865 } else { 866 fparg.dbl = GETARG(double); 867 dtoaresult = 868 __hdtoa(fparg.dbl, xdigs, prec, 869 &expt, &signflag, &dtoaend); 870 } 871 872 if (prec < 0) 873 prec = dtoaend - dtoaresult; 874 if (expt == INT_MAX) 875 ox[1] = '\0'; 876 if (convbuf != NULL) 877 free(convbuf); 878 ndig = dtoaend - dtoaresult; 879 cp = convbuf = __mbsconv(dtoaresult, -1); 880 freedtoa(dtoaresult); 881 goto fp_common; 882 case 'e': 883 case 'E': 884 expchar = ch; 885 if (prec < 0) /* account for digit before decpt */ 886 prec = DEFPREC + 1; 887 else 888 prec++; 889 goto fp_begin; 890 case 'f': 891 case 'F': 892 expchar = '\0'; 893 goto fp_begin; 894 case 'g': 895 case 'G': 896 expchar = ch - ('g' - 'e'); 897 if (prec == 0) 898 prec = 1; 899 fp_begin: 900 if (prec < 0) 901 prec = DEFPREC; 902 if (convbuf != NULL) 903 free(convbuf); 904 if (flags & LONGDBL) { 905 fparg.ldbl = GETARG(long double); 906 dtoaresult = 907 __ldtoa(&fparg.ldbl, expchar ? 2 : 3, prec, 908 &expt, &signflag, &dtoaend); 909 } else { 910 fparg.dbl = GETARG(double); 911 dtoaresult = 912 dtoa(fparg.dbl, expchar ? 2 : 3, prec, 913 &expt, &signflag, &dtoaend); 914 if (expt == 9999) 915 expt = INT_MAX; 916 } 917 ndig = dtoaend - dtoaresult; 918 cp = convbuf = __mbsconv(dtoaresult, -1); 919 freedtoa(dtoaresult); 920 fp_common: 921 if (signflag) 922 sign = '-'; 923 if (expt == INT_MAX) { /* inf or nan */ 924 if (*cp == 'N') { 925 cp = (ch >= 'a') ? L"nan" : L"NAN"; 926 sign = '\0'; 927 } else 928 cp = (ch >= 'a') ? L"inf" : L"INF"; 929 size = 3; 930 break; 931 } 932 #else 933 case 'e': 934 case 'E': 935 case 'f': 936 case 'F': 937 case 'g': 938 case 'G': 939 if (prec == -1) { 940 prec = DEFPREC; 941 } else if ((ch == 'g' || ch == 'G') && prec == 0) { 942 prec = 1; 943 } 944 945 if (flags & LONGDBL) { 946 _double = (double) GETARG(long double); 947 } else { 948 _double = GETARG(double); 949 } 950 951 /* do this before tricky precision changes */ 952 if (isinf(_double)) { 953 if (_double < 0) 954 sign = '-'; 955 if (ch == 'E' || ch == 'F' || ch == 'G') 956 cp = L"INF"; 957 else 958 cp = L"inf"; 959 size = 3; 960 break; 961 } 962 if (isnan(_double)) { 963 if (ch == 'E' || ch == 'F' || ch == 'G') 964 cp = L"NAN"; 965 else 966 cp = L"nan"; 967 size = 3; 968 break; 969 } 970 971 flags |= FPT; 972 cp = cvt(_double, prec, flags, &softsign, 973 &expt, ch, &ndig); 974 if (softsign) 975 sign = '-'; 976 #endif 977 flags |= FPT; 978 if (ch == 'g' || ch == 'G') { 979 if (expt > -4 && expt <= prec) { 980 /* Make %[gG] smell like %[fF] */ 981 expchar = '\0'; 982 if (flags & ALT) 983 prec -= expt; 984 else 985 prec = ndig - expt; 986 if (prec < 0) 987 prec = 0; 988 } else { 989 /* 990 * Make %[gG] smell like %[eE], but 991 * trim trailing zeroes if no # flag. 992 */ 993 if (!(flags & ALT)) 994 prec = ndig; 995 } 996 } 997 if (expchar) { 998 expsize = exponent(expstr, expt - 1, expchar); 999 size = expsize + prec; 1000 if (prec > 1 || flags & ALT) 1001 ++size; 1002 } else { 1003 /* space for digits before decimal point */ 1004 if (expt > 0) 1005 size = expt; 1006 else /* "0" */ 1007 size = 1; 1008 /* space for decimal pt and following digits */ 1009 if (prec || flags & ALT) 1010 size += prec + 1; 1011 if (grouping && expt > 0) { 1012 /* space for thousands' grouping */ 1013 nseps = nrepeats = 0; 1014 lead = expt; 1015 while (*grouping != CHAR_MAX) { 1016 if (lead <= *grouping) 1017 break; 1018 lead -= *grouping; 1019 if (*(grouping+1)) { 1020 nseps++; 1021 grouping++; 1022 } else 1023 nrepeats++; 1024 } 1025 size += nseps + nrepeats; 1026 } else 1027 lead = expt; 1028 } 1029 break; 1030 #endif /* !NO_FLOATING_POINT */ 1031 case 'n': 1032 /* 1033 * Assignment-like behavior is specified if the 1034 * value overflows or is otherwise unrepresentable. 1035 * C99 says to use `signed char' for %hhn conversions. 1036 */ 1037 if (flags & LLONGINT) 1038 *GETARG(quad_t *) = ret; 1039 else if (flags & SIZET) 1040 *GETARG(ssize_t *) = (ssize_t)ret; 1041 else if (flags & PTRDIFFT) 1042 *GETARG(ptrdiff_t *) = ret; 1043 else if (flags & INTMAXT) 1044 *GETARG(intmax_t *) = ret; 1045 else if (flags & LONGINT) 1046 *GETARG(long *) = ret; 1047 else if (flags & SHORTINT) 1048 *GETARG(short *) = ret; 1049 else if (flags & CHARINT) 1050 *GETARG(signed char *) = ret; 1051 else 1052 *GETARG(int *) = ret; 1053 continue; /* no output */ 1054 case 'O': 1055 flags |= LONGINT; 1056 /*FALLTHROUGH*/ 1057 case 'o': 1058 if (flags & INTMAX_SIZE) 1059 ujval = UJARG(); 1060 else 1061 ulval = UARG(); 1062 base = 8; 1063 goto nosign; 1064 case 'p': 1065 /*- 1066 * ``The argument shall be a pointer to void. The 1067 * value of the pointer is converted to a sequence 1068 * of printable characters, in an implementation- 1069 * defined manner.'' 1070 * -- ANSI X3J11 1071 */ 1072 ujval = (uintmax_t)(uintptr_t)GETARG(void *); 1073 base = 16; 1074 xdigs = xdigs_lower; 1075 flags = flags | INTMAXT; 1076 ox[1] = 'x'; 1077 goto nosign; 1078 case 'S': 1079 flags |= LONGINT; 1080 /*FALLTHROUGH*/ 1081 case 's': 1082 if (flags & LONGINT) { 1083 if ((cp = GETARG(wchar_t *)) == NULL) 1084 cp = L"(null)"; 1085 } else { 1086 char *mbp; 1087 1088 if (convbuf != NULL) 1089 free(convbuf); 1090 if ((mbp = GETARG(char *)) == NULL) 1091 cp = L"(null)"; 1092 else { 1093 convbuf = __mbsconv(mbp, prec); 1094 if (convbuf == NULL) { 1095 fp->_flags |= __SERR; 1096 goto error; 1097 } 1098 cp = convbuf; 1099 } 1100 } 1101 1102 if (prec >= 0) { 1103 /* 1104 * can't use wcslen; can only look for the 1105 * NUL in the first `prec' characters, and 1106 * wcslen() will go further. 1107 */ 1108 wchar_t *p = wmemchr(cp, 0, (size_t)prec); 1109 1110 if (p != NULL) { 1111 size = p - cp; 1112 if (size > prec) 1113 size = prec; 1114 } else 1115 size = prec; 1116 } else 1117 size = wcslen(cp); 1118 sign = '\0'; 1119 break; 1120 case 'U': 1121 flags |= LONGINT; 1122 /*FALLTHROUGH*/ 1123 case 'u': 1124 if (flags & INTMAX_SIZE) 1125 ujval = UJARG(); 1126 else 1127 ulval = UARG(); 1128 base = 10; 1129 goto nosign; 1130 case 'X': 1131 xdigs = xdigs_upper; 1132 goto hex; 1133 case 'x': 1134 xdigs = xdigs_lower; 1135 hex: 1136 if (flags & INTMAX_SIZE) 1137 ujval = UJARG(); 1138 else 1139 ulval = UARG(); 1140 base = 16; 1141 /* leading 0x/X only if non-zero */ 1142 if (flags & ALT && 1143 (flags & INTMAX_SIZE ? ujval != 0 : ulval != 0)) 1144 ox[1] = ch; 1145 1146 flags &= ~GROUPING; 1147 /* unsigned conversions */ 1148 nosign: sign = '\0'; 1149 /*- 1150 * ``... diouXx conversions ... if a precision is 1151 * specified, the 0 flag will be ignored.'' 1152 * -- ANSI X3J11 1153 */ 1154 number: if ((dprec = prec) >= 0) 1155 flags &= ~ZEROPAD; 1156 1157 /*- 1158 * ``The result of converting a zero value with an 1159 * explicit precision of zero is no characters.'' 1160 * -- ANSI X3J11 1161 * 1162 * ``The C Standard is clear enough as is. The call 1163 * printf("%#.0o", 0) should print 0.'' 1164 * -- Defect Report #151 1165 */ 1166 cp = buf + BUF; 1167 if (flags & INTMAX_SIZE) { 1168 if (ujval != 0 || prec != 0 || 1169 (flags & ALT && base == 8)) 1170 cp = __ujtoa(ujval, cp, base, 1171 flags & ALT, xdigs, 1172 flags & GROUPING, thousands_sep, 1173 grouping); 1174 } else { 1175 if (ulval != 0 || prec != 0 || 1176 (flags & ALT && base == 8)) 1177 cp = __ultoa(ulval, cp, base, 1178 flags & ALT, xdigs, 1179 flags & GROUPING, thousands_sep, 1180 grouping); 1181 } 1182 size = buf + BUF - cp; 1183 if (size > BUF) /* should never happen */ 1184 abort(); 1185 break; 1186 default: /* "%?" prints ?, unless ? is NUL */ 1187 if (ch == '\0') 1188 goto done; 1189 /* pretend it was %c with argument ch */ 1190 cp = buf; 1191 *cp = ch; 1192 size = 1; 1193 sign = '\0'; 1194 break; 1195 } 1196 1197 /* 1198 * All reasonable formats wind up here. At this point, `cp' 1199 * points to a string which (if not flags&LADJUST) should be 1200 * padded out to `width' places. If flags&ZEROPAD, it should 1201 * first be prefixed by any sign or other prefix; otherwise, 1202 * it should be blank padded before the prefix is emitted. 1203 * After any left-hand padding and prefixing, emit zeroes 1204 * required by a decimal [diouxX] precision, then print the 1205 * string proper, then emit zeroes required by any leftover 1206 * floating precision; finally, if LADJUST, pad with blanks. 1207 * 1208 * Compute actual size, so we know how much to pad. 1209 * size excludes decimal prec; realsz includes it. 1210 */ 1211 realsz = dprec > size ? dprec : size; 1212 if (sign) 1213 realsz++; 1214 if (ox[1]) 1215 realsz += 2; 1216 1217 prsize = width > realsz ? width : realsz; 1218 if ((unsigned)ret + prsize > INT_MAX) { 1219 ret = EOF; 1220 goto error; 1221 } 1222 1223 /* right-adjusting blank padding */ 1224 if ((flags & (LADJUST|ZEROPAD)) == 0) 1225 PAD(width - realsz, blanks); 1226 1227 /* prefix */ 1228 if (sign) 1229 PRINT(&sign, 1); 1230 1231 if (ox[1]) { /* ox[1] is either x, X, or \0 */ 1232 ox[0] = '0'; 1233 PRINT(ox, 2); 1234 } 1235 1236 /* right-adjusting zero padding */ 1237 if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD) 1238 PAD(width - realsz, zeroes); 1239 1240 /* leading zeroes from decimal precision */ 1241 PAD(dprec - size, zeroes); 1242 1243 /* the string or number proper */ 1244 #ifndef NO_FLOATING_POINT 1245 if ((flags & FPT) == 0) { 1246 PRINT(cp, size); 1247 } else { /* glue together f_p fragments */ 1248 if (!expchar) { /* %[fF] or sufficiently short %[gG] */ 1249 if (expt <= 0) { 1250 PRINT(zeroes, 1); 1251 if (prec || flags & ALT) 1252 PRINT(decimal_point, 1); 1253 PAD(-expt, zeroes); 1254 /* already handled initial 0's */ 1255 prec += expt; 1256 } else { 1257 PRINTANDPAD(cp, convbuf + ndig, lead, zeroes); 1258 cp += lead; 1259 if (grouping) { 1260 while (nseps>0 || nrepeats>0) { 1261 if (nrepeats > 0) 1262 nrepeats--; 1263 else { 1264 grouping--; 1265 nseps--; 1266 } 1267 PRINT(&thousands_sep, 1268 1); 1269 PRINTANDPAD(cp, 1270 convbuf + ndig, 1271 *grouping, zeroes); 1272 cp += *grouping; 1273 } 1274 if (cp > convbuf + ndig) 1275 cp = convbuf + ndig; 1276 } 1277 if (prec || flags & ALT) { 1278 buf[0] = *decimal_point; 1279 PRINT(buf, 1); 1280 } 1281 } 1282 PRINTANDPAD(cp, convbuf + ndig, prec, zeroes); 1283 } else { /* %[eE] or sufficiently long %[gG] */ 1284 if (prec > 1 || flags & ALT) { 1285 buf[0] = *cp++; 1286 buf[1] = *decimal_point; 1287 PRINT(buf, 2); 1288 PRINT(cp, ndig-1); 1289 PAD(prec - ndig, zeroes); 1290 } else /* XeYYY */ 1291 PRINT(cp, 1); 1292 PRINT(expstr, expsize); 1293 } 1294 } 1295 #else 1296 PRINT(cp, size); 1297 #endif 1298 /* left-adjusting padding (always blank) */ 1299 if (flags & LADJUST) 1300 PAD(width - realsz, blanks); 1301 1302 /* finally, adjust ret */ 1303 ret += prsize; 1304 } 1305 done: 1306 error: 1307 va_end(orgap); 1308 if (convbuf != NULL) 1309 free(convbuf); 1310 if (__sferror(fp)) 1311 ret = EOF; 1312 if ((argtable != NULL) && (argtable != statargtable)) 1313 free (argtable); 1314 return (ret); 1315 /* NOTREACHED */ 1316 } 1317 1318 /* 1319 * Find all arguments when a positional parameter is encountered. Returns a 1320 * table, indexed by argument number, of pointers to each arguments. The 1321 * initial argument table should be an array of STATIC_ARG_TBL_SIZE entries. 1322 * It will be replaces with a malloc-ed one if it overflows. 1323 */ 1324 static void 1325 __find_arguments (const wchar_t *fmt0, va_list ap, union arg **argtable) 1326 { 1327 wchar_t *fmt; /* format string */ 1328 wchar_t ch; /* character from fmt */ 1329 int n, n2; /* handy integer (short term usage) */ 1330 wchar_t *cp; /* handy char pointer (short term usage) */ 1331 int flags; /* flags as above */ 1332 enum typeid *typetable; /* table of types */ 1333 enum typeid stattypetable [STATIC_ARG_TBL_SIZE]; 1334 int tablesize; /* current size of type table */ 1335 int tablemax; /* largest used index in table */ 1336 int nextarg; /* 1-based argument index */ 1337 1338 /* 1339 * Add an argument type to the table, expanding if necessary. 1340 */ 1341 #define ADDTYPE(type) \ 1342 /*LINTED null effect*/ \ 1343 (void)((nextarg >= tablesize) ? \ 1344 __grow_type_table(nextarg, &typetable, &tablesize) : (void)0, \ 1345 (nextarg > tablemax) ? tablemax = nextarg : 0, \ 1346 typetable[nextarg++] = type) 1347 1348 #define ADDSARG() \ 1349 (void)((flags&INTMAXT) ? ADDTYPE(T_INTMAXT) : \ 1350 ((flags&SIZET) ? ADDTYPE(T_SIZET) : \ 1351 ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \ 1352 ((flags&LLONGINT) ? ADDTYPE(T_LLONG) : \ 1353 ((flags&LONGINT) ? ADDTYPE(T_LONG) : ADDTYPE(T_INT)))))) 1354 1355 #define ADDUARG() \ 1356 (void)((flags&INTMAXT) ? ADDTYPE(T_UINTMAXT) : \ 1357 ((flags&SIZET) ? ADDTYPE(T_SIZET) : \ 1358 ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \ 1359 ((flags&LLONGINT) ? ADDTYPE(T_U_LLONG) : \ 1360 ((flags&LONGINT) ? ADDTYPE(T_U_LONG) : ADDTYPE(T_U_INT)))))) 1361 1362 /* 1363 * Add * arguments to the type array. 1364 */ 1365 #define ADDASTER() \ 1366 n2 = 0; \ 1367 cp = fmt; \ 1368 while (is_digit(*cp)) { \ 1369 n2 = 10 * n2 + to_digit(*cp); \ 1370 cp++; \ 1371 } \ 1372 if (*cp == '$') { \ 1373 int hold = nextarg; \ 1374 nextarg = n2; \ 1375 ADDTYPE (T_INT); \ 1376 nextarg = hold; \ 1377 fmt = ++cp; \ 1378 } else { \ 1379 ADDTYPE (T_INT); \ 1380 } 1381 fmt = (wchar_t *)__UNCONST(fmt0); 1382 typetable = stattypetable; 1383 tablesize = STATIC_ARG_TBL_SIZE; 1384 tablemax = 0; 1385 nextarg = 1; 1386 for (n = 0; n < STATIC_ARG_TBL_SIZE; n++) 1387 typetable[n] = T_UNUSED; 1388 1389 /* 1390 * Scan the format for conversions (`%' character). 1391 */ 1392 for (;;) { 1393 for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++) 1394 /* void */; 1395 if (ch == '\0') 1396 goto done; 1397 fmt++; /* skip over '%' */ 1398 1399 flags = 0; 1400 1401 rflag: ch = *fmt++; 1402 reswitch: switch (ch) { 1403 case ' ': 1404 case '#': 1405 goto rflag; 1406 case '*': 1407 ADDASTER (); 1408 goto rflag; 1409 case '-': 1410 case '+': 1411 case '\'': 1412 goto rflag; 1413 case '.': 1414 if ((ch = *fmt++) == '*') { 1415 ADDASTER (); 1416 goto rflag; 1417 } 1418 while (is_digit(ch)) { 1419 ch = *fmt++; 1420 } 1421 goto reswitch; 1422 case '0': 1423 goto rflag; 1424 case '1': case '2': case '3': case '4': 1425 case '5': case '6': case '7': case '8': case '9': 1426 n = 0; 1427 do { 1428 n = 10 * n + to_digit(ch); 1429 ch = *fmt++; 1430 } while (is_digit(ch)); 1431 if (ch == '$') { 1432 nextarg = n; 1433 goto rflag; 1434 } 1435 goto reswitch; 1436 #ifndef NO_FLOATING_POINT 1437 case 'L': 1438 flags |= LONGDBL; 1439 goto rflag; 1440 #endif 1441 case 'h': 1442 if (flags & SHORTINT) { 1443 flags &= ~SHORTINT; 1444 flags |= CHARINT; 1445 } else 1446 flags |= SHORTINT; 1447 goto rflag; 1448 case 'j': 1449 flags |= INTMAXT; 1450 goto rflag; 1451 case 'l': 1452 if (flags & LONGINT) { 1453 flags &= ~LONGINT; 1454 flags |= LLONGINT; 1455 } else 1456 flags |= LONGINT; 1457 goto rflag; 1458 case 'q': 1459 flags |= LLONGINT; /* not necessarily */ 1460 goto rflag; 1461 case 't': 1462 flags |= PTRDIFFT; 1463 goto rflag; 1464 case 'z': 1465 flags |= SIZET; 1466 goto rflag; 1467 case 'C': 1468 flags |= LONGINT; 1469 /*FALLTHROUGH*/ 1470 case 'c': 1471 if (flags & LONGINT) 1472 ADDTYPE(T_WINT); 1473 else 1474 ADDTYPE(T_INT); 1475 break; 1476 case 'D': 1477 flags |= LONGINT; 1478 /*FALLTHROUGH*/ 1479 case 'd': 1480 case 'i': 1481 ADDSARG(); 1482 break; 1483 #ifndef NO_FLOATING_POINT 1484 case 'a': 1485 case 'A': 1486 case 'e': 1487 case 'E': 1488 case 'f': 1489 case 'g': 1490 case 'G': 1491 if (flags & LONGDBL) 1492 ADDTYPE(T_LONG_DOUBLE); 1493 else 1494 ADDTYPE(T_DOUBLE); 1495 break; 1496 #endif /* !NO_FLOATING_POINT */ 1497 case 'n': 1498 if (flags & INTMAXT) 1499 ADDTYPE(TP_INTMAXT); 1500 else if (flags & PTRDIFFT) 1501 ADDTYPE(TP_PTRDIFFT); 1502 else if (flags & SIZET) 1503 ADDTYPE(TP_SIZET); 1504 else if (flags & LLONGINT) 1505 ADDTYPE(TP_LLONG); 1506 else if (flags & LONGINT) 1507 ADDTYPE(TP_LONG); 1508 else if (flags & SHORTINT) 1509 ADDTYPE(TP_SHORT); 1510 else if (flags & CHARINT) 1511 ADDTYPE(TP_SCHAR); 1512 else 1513 ADDTYPE(TP_INT); 1514 continue; /* no output */ 1515 case 'O': 1516 flags |= LONGINT; 1517 /*FALLTHROUGH*/ 1518 case 'o': 1519 ADDUARG(); 1520 break; 1521 case 'p': 1522 ADDTYPE(TP_VOID); 1523 break; 1524 case 'S': 1525 flags |= LONGINT; 1526 /*FALLTHROUGH*/ 1527 case 's': 1528 if (flags & LONGINT) 1529 ADDTYPE(TP_WCHAR); 1530 else 1531 ADDTYPE(TP_CHAR); 1532 break; 1533 case 'U': 1534 flags |= LONGINT; 1535 /*FALLTHROUGH*/ 1536 case 'u': 1537 case 'X': 1538 case 'x': 1539 ADDUARG(); 1540 break; 1541 default: /* "%?" prints ?, unless ? is NUL */ 1542 if (ch == '\0') 1543 goto done; 1544 break; 1545 } 1546 } 1547 done: 1548 /* 1549 * Build the argument table. 1550 */ 1551 if (tablemax >= STATIC_ARG_TBL_SIZE) { 1552 *argtable = (union arg *) 1553 malloc (sizeof (union arg) * (tablemax + 1)); 1554 } 1555 1556 (*argtable) [0].intarg = 0; 1557 for (n = 1; n <= tablemax; n++) { 1558 switch (typetable [n]) { 1559 case T_UNUSED: /* whoops! */ 1560 (*argtable) [n].intarg = va_arg (ap, int); 1561 break; 1562 case TP_SCHAR: 1563 (*argtable) [n].pschararg = va_arg (ap, signed char *); 1564 break; 1565 case TP_SHORT: 1566 (*argtable) [n].pshortarg = va_arg (ap, short *); 1567 break; 1568 case T_INT: 1569 (*argtable) [n].intarg = va_arg (ap, int); 1570 break; 1571 case T_U_INT: 1572 (*argtable) [n].uintarg = va_arg (ap, unsigned int); 1573 break; 1574 case TP_INT: 1575 (*argtable) [n].pintarg = va_arg (ap, int *); 1576 break; 1577 case T_LONG: 1578 (*argtable) [n].longarg = va_arg (ap, long); 1579 break; 1580 case T_U_LONG: 1581 (*argtable) [n].ulongarg = va_arg (ap, unsigned long); 1582 break; 1583 case TP_LONG: 1584 (*argtable) [n].plongarg = va_arg (ap, long *); 1585 break; 1586 case T_LLONG: 1587 (*argtable) [n].longlongarg = va_arg (ap, quad_t); 1588 break; 1589 case T_U_LLONG: 1590 (*argtable) [n].ulonglongarg = va_arg (ap, u_quad_t); 1591 break; 1592 case TP_LLONG: 1593 (*argtable) [n].plonglongarg = va_arg (ap, quad_t *); 1594 break; 1595 case T_PTRDIFFT: 1596 (*argtable) [n].ptrdiffarg = va_arg (ap, ptrdiff_t); 1597 break; 1598 case TP_PTRDIFFT: 1599 (*argtable) [n].pptrdiffarg = va_arg (ap, ptrdiff_t *); 1600 break; 1601 case T_SIZET: 1602 (*argtable) [n].sizearg = va_arg (ap, size_t); 1603 break; 1604 case TP_SIZET: 1605 (*argtable) [n].psizearg = va_arg (ap, size_t *); 1606 break; 1607 case T_INTMAXT: 1608 (*argtable) [n].intmaxarg = va_arg (ap, intmax_t); 1609 break; 1610 case T_UINTMAXT: 1611 (*argtable) [n].uintmaxarg = va_arg (ap, uintmax_t); 1612 break; 1613 case TP_INTMAXT: 1614 (*argtable) [n].pintmaxarg = va_arg (ap, intmax_t *); 1615 break; 1616 #ifndef NO_FLOATING_POINT 1617 case T_DOUBLE: 1618 (*argtable) [n].doublearg = va_arg (ap, double); 1619 break; 1620 case T_LONG_DOUBLE: 1621 (*argtable) [n].longdoublearg = va_arg (ap, long double); 1622 break; 1623 #endif 1624 case TP_CHAR: 1625 (*argtable) [n].pchararg = va_arg (ap, char *); 1626 break; 1627 case TP_VOID: 1628 (*argtable) [n].pvoidarg = va_arg (ap, void *); 1629 break; 1630 case T_WINT: 1631 (*argtable) [n].wintarg = va_arg (ap, wint_t); 1632 break; 1633 case TP_WCHAR: 1634 (*argtable) [n].pwchararg = va_arg (ap, wchar_t *); 1635 break; 1636 } 1637 } 1638 1639 if ((typetable != NULL) && (typetable != stattypetable)) 1640 free (typetable); 1641 } 1642 1643 /* 1644 * Increase the size of the type table. 1645 */ 1646 static void 1647 __grow_type_table (int nextarg, enum typeid **typetable, int *tablesize) 1648 { 1649 enum typeid *const oldtable = *typetable; 1650 const int oldsize = *tablesize; 1651 enum typeid *newtable; 1652 int n, newsize = oldsize * 2; 1653 1654 if (newsize < nextarg + 1) 1655 newsize = nextarg + 1; 1656 if (oldsize == STATIC_ARG_TBL_SIZE) { 1657 if ((newtable = malloc(newsize * sizeof(enum typeid))) == NULL) 1658 abort(); /* XXX handle better */ 1659 bcopy(oldtable, newtable, oldsize * sizeof(enum typeid)); 1660 } else { 1661 newtable = realloc(oldtable, newsize * sizeof(enum typeid)); 1662 if (newtable == NULL) 1663 abort(); /* XXX handle better */ 1664 } 1665 for (n = oldsize; n < newsize; n++) 1666 newtable[n] = T_UNUSED; 1667 1668 *typetable = newtable; 1669 *tablesize = newsize; 1670 } 1671 1672 1673 #ifndef NO_FLOATING_POINT 1674 static wchar_t * 1675 cvt(double value, int ndigits, int flags, char *sign, int *decpt, int ch, 1676 int *length) 1677 { 1678 int mode, dsgn; 1679 char *digits, *bp, *rve; 1680 static wchar_t buf[512]; 1681 1682 _DIAGASSERT(decpt != NULL); 1683 _DIAGASSERT(length != NULL); 1684 _DIAGASSERT(sign != NULL); 1685 1686 if (ch == 'f') { 1687 mode = 3; /* ndigits after the decimal point */ 1688 } else { 1689 /* To obtain ndigits after the decimal point for the 'e' 1690 * and 'E' formats, round to ndigits + 1 significant 1691 * figures. 1692 */ 1693 if (ch == 'e' || ch == 'E') { 1694 ndigits++; 1695 } 1696 mode = 2; /* ndigits significant digits */ 1697 } 1698 1699 digits = __dtoa(value, mode, ndigits, decpt, &dsgn, &rve); 1700 if (dsgn) { 1701 value = -value; 1702 *sign = '-'; 1703 } else 1704 *sign = '\000'; 1705 if ((ch != 'g' && ch != 'G') || flags & ALT) { /* Print trailing zeros */ 1706 bp = digits + ndigits; 1707 if (ch == 'f') { 1708 if (*digits == '0' && value) 1709 *decpt = -ndigits + 1; 1710 bp += *decpt; 1711 } 1712 if (value == 0) /* kludge for __dtoa irregularity */ 1713 rve = bp; 1714 while (rve < bp) 1715 *rve++ = '0'; 1716 } 1717 *length = rve - digits; 1718 (void)mbstowcs(buf, digits, sizeof(buf)/sizeof(buf[0])); 1719 return buf; 1720 } 1721 static int 1722 exponent(wchar_t *p0, int expo, wchar_t fmtch) 1723 { 1724 wchar_t *p, *t; 1725 wchar_t expbuf[MAXEXPDIG]; 1726 1727 p = p0; 1728 *p++ = fmtch; 1729 if (expo < 0) { 1730 expo = -expo; 1731 *p++ = '-'; 1732 } 1733 else 1734 *p++ = '+'; 1735 t = expbuf + MAXEXPDIG; 1736 if (expo > 9) { 1737 do { 1738 *--t = to_char(expo % 10); 1739 } while ((expo /= 10) > 9); 1740 *--t = to_char(expo); 1741 for (; t < expbuf + MAXEXPDIG; *p++ = *t++); 1742 } 1743 else { 1744 /* 1745 * Exponents for decimal floating point conversions 1746 * (%[eEgG]) must be at least two characters long, 1747 * whereas exponents for hexadecimal conversions can 1748 * be only one character long. 1749 */ 1750 if (fmtch == 'e' || fmtch == 'E') 1751 *p++ = '0'; 1752 *p++ = to_char(expo); 1753 } 1754 return (p - p0); 1755 } 1756 #endif /* !NO_FLOATING_POINT */ 1757