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