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