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 #include <sys/cdefs.h> 38 #if 0 39 #if defined(LIBC_SCCS) && !defined(lint) 40 static char sccsid[] = "@(#)vfprintf.c 8.1 (Berkeley) 6/4/93"; 41 #endif /* LIBC_SCCS and not lint */ 42 __FBSDID("FreeBSD: src/lib/libc/stdio/vfprintf.c,v 1.62 2004/01/18 10:32:49 das Exp"); 43 #endif 44 __FBSDID("$FreeBSD$"); 45 46 /* 47 * Actual wprintf innards. 48 * 49 * Avoid making gratuitous changes to this source file; it should be kept 50 * as close as possible to vfprintf.c for ease of maintenance. 51 */ 52 53 #include "namespace.h" 54 #include <sys/types.h> 55 56 #include <ctype.h> 57 #include <limits.h> 58 #include <locale.h> 59 #include <stdarg.h> 60 #include <stddef.h> 61 #include <stdint.h> 62 #include <stdio.h> 63 #include <stdlib.h> 64 #include <string.h> 65 #include <wchar.h> 66 #include <wctype.h> 67 #include "un-namespace.h" 68 69 #include "libc_private.h" 70 #include "local.h" 71 #include "fvwrite.h" 72 73 /* Define FLOATING_POINT to get floating point, HEXFLOAT to get %a. */ 74 #define FLOATING_POINT 75 #define HEXFLOAT 76 77 union arg { 78 int intarg; 79 u_int uintarg; 80 long longarg; 81 u_long ulongarg; 82 long long longlongarg; 83 unsigned long long ulonglongarg; 84 ptrdiff_t ptrdiffarg; 85 size_t sizearg; 86 intmax_t intmaxarg; 87 uintmax_t uintmaxarg; 88 void *pvoidarg; 89 char *pchararg; 90 signed char *pschararg; 91 short *pshortarg; 92 int *pintarg; 93 long *plongarg; 94 long long *plonglongarg; 95 ptrdiff_t *pptrdiffarg; 96 size_t *psizearg; 97 intmax_t *pintmaxarg; 98 #ifdef FLOATING_POINT 99 double doublearg; 100 long double longdoublearg; 101 #endif 102 wint_t wintarg; 103 wchar_t *pwchararg; 104 }; 105 106 /* 107 * Type ids for argument type table. 108 */ 109 enum typeid { 110 T_UNUSED, TP_SHORT, T_INT, T_U_INT, TP_INT, 111 T_LONG, T_U_LONG, TP_LONG, T_LLONG, T_U_LLONG, TP_LLONG, 112 T_PTRDIFFT, TP_PTRDIFFT, T_SIZET, TP_SIZET, 113 T_INTMAXT, T_UINTMAXT, TP_INTMAXT, TP_VOID, TP_CHAR, TP_SCHAR, 114 T_DOUBLE, T_LONG_DOUBLE, T_WINT, TP_WCHAR 115 }; 116 117 static int __sbprintf(FILE *, const wchar_t *, va_list); 118 static wint_t __xfputwc(wchar_t, FILE *); 119 static wchar_t *__ujtoa(uintmax_t, wchar_t *, int, int, const char *, int, 120 char, const char *); 121 static wchar_t *__ultoa(u_long, wchar_t *, int, int, const char *, int, 122 char, const char *); 123 static wchar_t *__mbsconv(char *, int); 124 static void __find_arguments(const wchar_t *, va_list, union arg **); 125 static void __grow_type_table(int, enum typeid **, int *); 126 127 /* 128 * Helper function for `fprintf to unbuffered unix file': creates a 129 * temporary buffer. We only work on write-only files; this avoids 130 * worries about ungetc buffers and so forth. 131 */ 132 static int 133 __sbprintf(FILE *fp, const wchar_t *fmt, va_list ap) 134 { 135 int ret; 136 FILE fake; 137 unsigned char buf[BUFSIZ]; 138 139 /* copy the important variables */ 140 fake._flags = fp->_flags & ~__SNBF; 141 fake._file = fp->_file; 142 fake._cookie = fp->_cookie; 143 fake._write = fp->_write; 144 fake._extra = fp->_extra; 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(&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(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) ((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[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[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 = 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 while (insize != 0) { 407 nconv = mbrtowc(wcp, p, insize, &mbs); 408 if (nconv == 0 || nconv == (size_t)-1 || nconv == (size_t)-2) 409 break; 410 wcp++; 411 p += nconv; 412 insize -= nconv; 413 } 414 if (nconv == (size_t)-1 || nconv == (size_t)-2) { 415 free(convbuf); 416 return (NULL); 417 } 418 *wcp = L'\0'; 419 420 return (convbuf); 421 } 422 423 /* 424 * MT-safe version 425 */ 426 int 427 vfwprintf(FILE * __restrict fp, const wchar_t * __restrict fmt0, va_list ap) 428 429 { 430 int ret; 431 432 FLOCKFILE(fp); 433 ret = __vfwprintf(fp, fmt0, ap); 434 FUNLOCKFILE(fp); 435 return (ret); 436 } 437 438 #ifdef 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 #include "gdtoa.h" 447 448 #define DEFPREC 6 449 450 static int exponent(wchar_t *, int, wchar_t); 451 452 #endif /* 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 /* long long 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(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 #ifdef 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 int signflag; /* true if float is negative */ 517 union { /* floating point arguments %[aAeEfFgG] */ 518 double dbl; 519 long double ldbl; 520 } fparg; 521 int expt; /* integer value of exponent */ 522 char expchar; /* exponent character: [eEpP\0] */ 523 char *dtoaend; /* pointer to end of converted digits */ 524 int expsize; /* character count for expstr */ 525 int lead; /* sig figs before decimal or group sep */ 526 int ndig; /* actual number of digits returned by dtoa */ 527 wchar_t expstr[MAXEXPDIG+2]; /* buffer for exponent string: e+ZZZ */ 528 char *dtoaresult; /* buffer allocated by dtoa */ 529 int nseps; /* number of group separators with ' */ 530 int nrepeats; /* number of repeats of the last group */ 531 #endif 532 u_long ulval; /* integer arguments %[diouxX] */ 533 uintmax_t ujval; /* %j, %ll, %q, %t, %z integers */ 534 int base; /* base for [diouxX] conversion */ 535 int dprec; /* a copy of prec if [diouxX], 0 otherwise */ 536 int realsz; /* field size expanded by dprec, sign, etc */ 537 int size; /* size of converted field or string */ 538 int prsize; /* max size of printed field */ 539 const char *xdigs; /* digits for [xX] conversion */ 540 wchar_t buf[BUF]; /* buffer with space for digits of uintmax_t */ 541 wchar_t ox[2]; /* space for 0x hex-prefix */ 542 union arg *argtable; /* args, built due to positional arg */ 543 union arg statargtable [STATIC_ARG_TBL_SIZE]; 544 int nextarg; /* 1-based argument index */ 545 va_list orgap; /* original argument pointer */ 546 wchar_t *convbuf; /* multibyte to wide conversion result */ 547 548 /* 549 * Choose PADSIZE to trade efficiency vs. size. If larger printf 550 * fields occur frequently, increase PADSIZE and make the initialisers 551 * below longer. 552 */ 553 #define PADSIZE 16 /* pad chunk size */ 554 static wchar_t blanks[PADSIZE] = 555 {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '}; 556 static wchar_t zeroes[PADSIZE] = 557 {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'}; 558 559 static const char xdigs_lower[16] = "0123456789abcdef"; 560 static const char xdigs_upper[16] = "0123456789ABCDEF"; 561 562 /* 563 * BEWARE, these `goto error' on error, PRINT uses `n2' and 564 * PAD uses `n'. 565 */ 566 #define PRINT(ptr, len) do { \ 567 for (n3 = 0; n3 < (len); n3++) \ 568 __xfputwc((ptr)[n3], fp); \ 569 } while (0) 570 #define PAD(howmany, with) do { \ 571 if ((n = (howmany)) > 0) { \ 572 while (n > PADSIZE) { \ 573 PRINT(with, PADSIZE); \ 574 n -= PADSIZE; \ 575 } \ 576 PRINT(with, n); \ 577 } \ 578 } while (0) 579 #define PRINTANDPAD(p, ep, len, with) do { \ 580 n2 = (ep) - (p); \ 581 if (n2 > (len)) \ 582 n2 = (len); \ 583 if (n2 > 0) \ 584 PRINT((p), n2); \ 585 PAD((len) - (n2 > 0 ? n2 : 0), (with)); \ 586 } while(0) 587 588 /* 589 * Get the argument indexed by nextarg. If the argument table is 590 * built, use it to get the argument. If its not, get the next 591 * argument (and arguments must be gotten sequentially). 592 */ 593 #define GETARG(type) \ 594 ((argtable != NULL) ? *((type*)(&argtable[nextarg++])) : \ 595 (nextarg++, va_arg(ap, type))) 596 597 /* 598 * To extend shorts properly, we need both signed and unsigned 599 * argument extraction methods. 600 */ 601 #define SARG() \ 602 (flags&LONGINT ? GETARG(long) : \ 603 flags&SHORTINT ? (long)(short)GETARG(int) : \ 604 flags&CHARINT ? (long)(signed char)GETARG(int) : \ 605 (long)GETARG(int)) 606 #define UARG() \ 607 (flags&LONGINT ? GETARG(u_long) : \ 608 flags&SHORTINT ? (u_long)(u_short)GETARG(int) : \ 609 flags&CHARINT ? (u_long)(u_char)GETARG(int) : \ 610 (u_long)GETARG(u_int)) 611 #define INTMAX_SIZE (INTMAXT|SIZET|PTRDIFFT|LLONGINT) 612 #define SJARG() \ 613 (flags&INTMAXT ? GETARG(intmax_t) : \ 614 flags&SIZET ? (intmax_t)GETARG(size_t) : \ 615 flags&PTRDIFFT ? (intmax_t)GETARG(ptrdiff_t) : \ 616 (intmax_t)GETARG(long long)) 617 #define UJARG() \ 618 (flags&INTMAXT ? GETARG(uintmax_t) : \ 619 flags&SIZET ? (uintmax_t)GETARG(size_t) : \ 620 flags&PTRDIFFT ? (uintmax_t)GETARG(ptrdiff_t) : \ 621 (uintmax_t)GETARG(unsigned long long)) 622 623 /* 624 * Get * arguments, including the form *nn$. Preserve the nextarg 625 * that the argument can be gotten once the type is determined. 626 */ 627 #define GETASTER(val) \ 628 n2 = 0; \ 629 cp = fmt; \ 630 while (is_digit(*cp)) { \ 631 n2 = 10 * n2 + to_digit(*cp); \ 632 cp++; \ 633 } \ 634 if (*cp == '$') { \ 635 int hold = nextarg; \ 636 if (argtable == NULL) { \ 637 argtable = statargtable; \ 638 __find_arguments (fmt0, orgap, &argtable); \ 639 } \ 640 nextarg = n2; \ 641 val = GETARG (int); \ 642 nextarg = hold; \ 643 fmt = ++cp; \ 644 } else { \ 645 val = GETARG (int); \ 646 } 647 648 649 thousands_sep = '\0'; 650 grouping = NULL; 651 #ifdef FLOATING_POINT 652 decimal_point = localeconv()->decimal_point; 653 #endif 654 convbuf = NULL; 655 /* sorry, fwprintf(read_only_file, L"") returns WEOF, not 0 */ 656 if (cantwrite(fp)) 657 return (EOF); 658 659 /* optimise fprintf(stderr) (and other unbuffered Unix files) */ 660 if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) && 661 fp->_file >= 0) 662 return (__sbprintf(fp, fmt0, ap)); 663 664 fmt = (wchar_t *)fmt0; 665 argtable = NULL; 666 nextarg = 1; 667 va_copy(orgap, ap); 668 ret = 0; 669 670 /* 671 * Scan the format for conversions (`%' character). 672 */ 673 for (;;) { 674 for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++) 675 /* void */; 676 if ((n = fmt - cp) != 0) { 677 if ((unsigned)ret + n > INT_MAX) { 678 ret = EOF; 679 goto error; 680 } 681 PRINT(cp, n); 682 ret += n; 683 } 684 if (ch == '\0') 685 goto done; 686 fmt++; /* skip over '%' */ 687 688 flags = 0; 689 dprec = 0; 690 width = 0; 691 prec = -1; 692 sign = '\0'; 693 ox[1] = '\0'; 694 695 rflag: ch = *fmt++; 696 reswitch: switch (ch) { 697 case ' ': 698 /*- 699 * ``If the space and + flags both appear, the space 700 * flag will be ignored.'' 701 * -- ANSI X3J11 702 */ 703 if (!sign) 704 sign = ' '; 705 goto rflag; 706 case '#': 707 flags |= ALT; 708 goto rflag; 709 case '*': 710 /*- 711 * ``A negative field width argument is taken as a 712 * - flag followed by a positive field width.'' 713 * -- ANSI X3J11 714 * They don't exclude field widths read from args. 715 */ 716 GETASTER (width); 717 if (width >= 0) 718 goto rflag; 719 width = -width; 720 /* FALLTHROUGH */ 721 case '-': 722 flags |= LADJUST; 723 goto rflag; 724 case '+': 725 sign = '+'; 726 goto rflag; 727 case '\'': 728 flags |= GROUPING; 729 thousands_sep = *(localeconv()->thousands_sep); 730 grouping = localeconv()->grouping; 731 goto rflag; 732 case '.': 733 if ((ch = *fmt++) == '*') { 734 GETASTER (prec); 735 goto rflag; 736 } 737 prec = 0; 738 while (is_digit(ch)) { 739 prec = 10 * prec + to_digit(ch); 740 ch = *fmt++; 741 } 742 goto reswitch; 743 case '0': 744 /*- 745 * ``Note that 0 is taken as a flag, not as the 746 * beginning of a field width.'' 747 * -- ANSI X3J11 748 */ 749 flags |= ZEROPAD; 750 goto rflag; 751 case '1': case '2': case '3': case '4': 752 case '5': case '6': case '7': case '8': case '9': 753 n = 0; 754 do { 755 n = 10 * n + to_digit(ch); 756 ch = *fmt++; 757 } while (is_digit(ch)); 758 if (ch == '$') { 759 nextarg = n; 760 if (argtable == NULL) { 761 argtable = statargtable; 762 __find_arguments (fmt0, orgap, 763 &argtable); 764 } 765 goto rflag; 766 } 767 width = n; 768 goto reswitch; 769 #ifdef FLOATING_POINT 770 case 'L': 771 flags |= LONGDBL; 772 goto rflag; 773 #endif 774 case 'h': 775 if (flags & SHORTINT) { 776 flags &= ~SHORTINT; 777 flags |= CHARINT; 778 } else 779 flags |= SHORTINT; 780 goto rflag; 781 case 'j': 782 flags |= INTMAXT; 783 goto rflag; 784 case 'l': 785 if (flags & LONGINT) { 786 flags &= ~LONGINT; 787 flags |= LLONGINT; 788 } else 789 flags |= LONGINT; 790 goto rflag; 791 case 'q': 792 flags |= LLONGINT; /* not necessarily */ 793 goto rflag; 794 case 't': 795 flags |= PTRDIFFT; 796 goto rflag; 797 case 'z': 798 flags |= SIZET; 799 goto rflag; 800 case 'C': 801 flags |= LONGINT; 802 /*FALLTHROUGH*/ 803 case 'c': 804 if (flags & LONGINT) 805 *(cp = buf) = (wchar_t)GETARG(wint_t); 806 else 807 *(cp = buf) = (wchar_t)btowc(GETARG(int)); 808 size = 1; 809 sign = '\0'; 810 break; 811 case 'D': 812 flags |= LONGINT; 813 /*FALLTHROUGH*/ 814 case 'd': 815 case 'i': 816 if (flags & INTMAX_SIZE) { 817 ujval = SJARG(); 818 if ((intmax_t)ujval < 0) { 819 ujval = -ujval; 820 sign = '-'; 821 } 822 } else { 823 ulval = SARG(); 824 if ((long)ulval < 0) { 825 ulval = -ulval; 826 sign = '-'; 827 } 828 } 829 base = 10; 830 goto number; 831 #ifdef FLOATING_POINT 832 #ifdef HEXFLOAT 833 case 'a': 834 case 'A': 835 if (ch == 'a') { 836 ox[1] = 'x'; 837 xdigs = xdigs_lower; 838 expchar = 'p'; 839 } else { 840 ox[1] = 'X'; 841 xdigs = xdigs_upper; 842 expchar = 'P'; 843 } 844 if (prec >= 0) 845 prec++; 846 if (flags & LONGDBL) { 847 fparg.ldbl = GETARG(long double); 848 dtoaresult = 849 __hldtoa(fparg.ldbl, xdigs, prec, 850 &expt, &signflag, &dtoaend); 851 } else { 852 fparg.dbl = GETARG(double); 853 dtoaresult = 854 __hdtoa(fparg.dbl, xdigs, prec, 855 &expt, &signflag, &dtoaend); 856 } 857 if (prec < 0) 858 prec = dtoaend - dtoaresult; 859 if (expt == INT_MAX) 860 ox[1] = '\0'; 861 if (convbuf != NULL) 862 free(convbuf); 863 ndig = dtoaend - dtoaresult; 864 cp = convbuf = __mbsconv(dtoaresult, -1); 865 freedtoa(dtoaresult); 866 goto fp_common; 867 #endif /* HEXFLOAT */ 868 case 'e': 869 case 'E': 870 expchar = ch; 871 if (prec < 0) /* account for digit before decpt */ 872 prec = DEFPREC + 1; 873 else 874 prec++; 875 goto fp_begin; 876 case 'f': 877 case 'F': 878 expchar = '\0'; 879 goto fp_begin; 880 case 'g': 881 case 'G': 882 expchar = ch - ('g' - 'e'); 883 if (prec == 0) 884 prec = 1; 885 fp_begin: 886 if (prec < 0) 887 prec = DEFPREC; 888 if (convbuf != NULL) 889 free(convbuf); 890 if (flags & LONGDBL) { 891 fparg.ldbl = GETARG(long double); 892 dtoaresult = 893 __ldtoa(&fparg.ldbl, expchar ? 2 : 3, prec, 894 &expt, &signflag, &dtoaend); 895 } else { 896 fparg.dbl = GETARG(double); 897 dtoaresult = 898 dtoa(fparg.dbl, expchar ? 2 : 3, prec, 899 &expt, &signflag, &dtoaend); 900 if (expt == 9999) 901 expt = INT_MAX; 902 } 903 ndig = dtoaend - dtoaresult; 904 cp = convbuf = __mbsconv(dtoaresult, -1); 905 freedtoa(dtoaresult); 906 fp_common: 907 if (signflag) 908 sign = '-'; 909 if (expt == INT_MAX) { /* inf or nan */ 910 if (*cp == 'N') { 911 cp = (ch >= 'a') ? L"nan" : L"NAN"; 912 sign = '\0'; 913 } else 914 cp = (ch >= 'a') ? L"inf" : L"INF"; 915 size = 3; 916 break; 917 } 918 flags |= FPT; 919 if (ch == 'g' || ch == 'G') { 920 if (expt > -4 && expt <= prec) { 921 /* Make %[gG] smell like %[fF] */ 922 expchar = '\0'; 923 if (flags & ALT) 924 prec -= expt; 925 else 926 prec = ndig - expt; 927 if (prec < 0) 928 prec = 0; 929 } else { 930 /* 931 * Make %[gG] smell like %[eE], but 932 * trim trailing zeroes if no # flag. 933 */ 934 if (!(flags & ALT)) 935 prec = ndig; 936 } 937 } 938 if (expchar) { 939 expsize = exponent(expstr, expt - 1, expchar); 940 size = expsize + prec; 941 if (prec > 1 || flags & ALT) 942 ++size; 943 } else { 944 /* space for digits before decimal point */ 945 if (expt > 0) 946 size = expt; 947 else /* "0" */ 948 size = 1; 949 /* space for decimal pt and following digits */ 950 if (prec || flags & ALT) 951 size += prec + 1; 952 if (grouping && expt > 0) { 953 /* space for thousands' grouping */ 954 nseps = nrepeats = 0; 955 lead = expt; 956 while (*grouping != CHAR_MAX) { 957 if (lead <= *grouping) 958 break; 959 lead -= *grouping; 960 if (*(grouping+1)) { 961 nseps++; 962 grouping++; 963 } else 964 nrepeats++; 965 } 966 size += nseps + nrepeats; 967 } else 968 lead = expt; 969 } 970 break; 971 #endif /* FLOATING_POINT */ 972 case 'n': 973 /* 974 * Assignment-like behavior is specified if the 975 * value overflows or is otherwise unrepresentable. 976 * C99 says to use `signed char' for %hhn conversions. 977 */ 978 if (flags & LLONGINT) 979 *GETARG(long long *) = ret; 980 else if (flags & SIZET) 981 *GETARG(ssize_t *) = (ssize_t)ret; 982 else if (flags & PTRDIFFT) 983 *GETARG(ptrdiff_t *) = ret; 984 else if (flags & INTMAXT) 985 *GETARG(intmax_t *) = ret; 986 else if (flags & LONGINT) 987 *GETARG(long *) = ret; 988 else if (flags & SHORTINT) 989 *GETARG(short *) = ret; 990 else if (flags & CHARINT) 991 *GETARG(signed char *) = ret; 992 else 993 *GETARG(int *) = ret; 994 continue; /* no output */ 995 case 'O': 996 flags |= LONGINT; 997 /*FALLTHROUGH*/ 998 case 'o': 999 if (flags & INTMAX_SIZE) 1000 ujval = UJARG(); 1001 else 1002 ulval = UARG(); 1003 base = 8; 1004 goto nosign; 1005 case 'p': 1006 /*- 1007 * ``The argument shall be a pointer to void. The 1008 * value of the pointer is converted to a sequence 1009 * of printable characters, in an implementation- 1010 * defined manner.'' 1011 * -- ANSI X3J11 1012 */ 1013 ujval = (uintmax_t)(uintptr_t)GETARG(void *); 1014 base = 16; 1015 xdigs = xdigs_lower; 1016 flags = flags | INTMAXT; 1017 ox[1] = 'x'; 1018 goto nosign; 1019 case 'S': 1020 flags |= LONGINT; 1021 /*FALLTHROUGH*/ 1022 case 's': 1023 if (flags & LONGINT) { 1024 if ((cp = GETARG(wchar_t *)) == NULL) 1025 cp = L"(null)"; 1026 } else { 1027 char *mbp; 1028 1029 if (convbuf != NULL) 1030 free(convbuf); 1031 if ((mbp = GETARG(char *)) == NULL) 1032 cp = L"(null)"; 1033 else { 1034 convbuf = __mbsconv(mbp, prec); 1035 if (convbuf == NULL) { 1036 fp->_flags |= __SERR; 1037 goto error; 1038 } 1039 cp = convbuf; 1040 } 1041 } 1042 1043 if (prec >= 0) { 1044 /* 1045 * can't use wcslen; can only look for the 1046 * NUL in the first `prec' characters, and 1047 * wcslen() will go further. 1048 */ 1049 wchar_t *p = wmemchr(cp, 0, (size_t)prec); 1050 1051 if (p != NULL) { 1052 size = p - cp; 1053 if (size > prec) 1054 size = prec; 1055 } else 1056 size = prec; 1057 } else 1058 size = wcslen(cp); 1059 sign = '\0'; 1060 break; 1061 case 'U': 1062 flags |= LONGINT; 1063 /*FALLTHROUGH*/ 1064 case 'u': 1065 if (flags & INTMAX_SIZE) 1066 ujval = UJARG(); 1067 else 1068 ulval = UARG(); 1069 base = 10; 1070 goto nosign; 1071 case 'X': 1072 xdigs = xdigs_upper; 1073 goto hex; 1074 case 'x': 1075 xdigs = xdigs_lower; 1076 hex: 1077 if (flags & INTMAX_SIZE) 1078 ujval = UJARG(); 1079 else 1080 ulval = UARG(); 1081 base = 16; 1082 /* leading 0x/X only if non-zero */ 1083 if (flags & ALT && 1084 (flags & INTMAX_SIZE ? ujval != 0 : ulval != 0)) 1085 ox[1] = ch; 1086 1087 flags &= ~GROUPING; 1088 /* unsigned conversions */ 1089 nosign: sign = '\0'; 1090 /*- 1091 * ``... diouXx conversions ... if a precision is 1092 * specified, the 0 flag will be ignored.'' 1093 * -- ANSI X3J11 1094 */ 1095 number: if ((dprec = prec) >= 0) 1096 flags &= ~ZEROPAD; 1097 1098 /*- 1099 * ``The result of converting a zero value with an 1100 * explicit precision of zero is no characters.'' 1101 * -- ANSI X3J11 1102 */ 1103 cp = buf + BUF; 1104 if (flags & INTMAX_SIZE) { 1105 if (ujval != 0 || prec != 0) 1106 cp = __ujtoa(ujval, cp, base, 1107 flags & ALT, xdigs, 1108 flags & GROUPING, thousands_sep, 1109 grouping); 1110 } else { 1111 if (ulval != 0 || prec != 0) 1112 cp = __ultoa(ulval, cp, base, 1113 flags & ALT, xdigs, 1114 flags & GROUPING, thousands_sep, 1115 grouping); 1116 } 1117 size = buf + BUF - cp; 1118 if (size > BUF) /* should never happen */ 1119 abort(); 1120 break; 1121 default: /* "%?" prints ?, unless ? is NUL */ 1122 if (ch == '\0') 1123 goto done; 1124 /* pretend it was %c with argument ch */ 1125 cp = buf; 1126 *cp = ch; 1127 size = 1; 1128 sign = '\0'; 1129 break; 1130 } 1131 1132 /* 1133 * All reasonable formats wind up here. At this point, `cp' 1134 * points to a string which (if not flags&LADJUST) should be 1135 * padded out to `width' places. If flags&ZEROPAD, it should 1136 * first be prefixed by any sign or other prefix; otherwise, 1137 * it should be blank padded before the prefix is emitted. 1138 * After any left-hand padding and prefixing, emit zeroes 1139 * required by a decimal [diouxX] precision, then print the 1140 * string proper, then emit zeroes required by any leftover 1141 * floating precision; finally, if LADJUST, pad with blanks. 1142 * 1143 * Compute actual size, so we know how much to pad. 1144 * size excludes decimal prec; realsz includes it. 1145 */ 1146 realsz = dprec > size ? dprec : size; 1147 if (sign) 1148 realsz++; 1149 if (ox[1]) 1150 realsz += 2; 1151 1152 prsize = width > realsz ? width : realsz; 1153 if ((unsigned)ret + prsize > INT_MAX) { 1154 ret = EOF; 1155 goto error; 1156 } 1157 1158 /* right-adjusting blank padding */ 1159 if ((flags & (LADJUST|ZEROPAD)) == 0) 1160 PAD(width - realsz, blanks); 1161 1162 /* prefix */ 1163 if (sign) 1164 PRINT(&sign, 1); 1165 1166 if (ox[1]) { /* ox[1] is either x, X, or \0 */ 1167 ox[0] = '0'; 1168 PRINT(ox, 2); 1169 } 1170 1171 /* right-adjusting zero padding */ 1172 if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD) 1173 PAD(width - realsz, zeroes); 1174 1175 /* leading zeroes from decimal precision */ 1176 PAD(dprec - size, zeroes); 1177 1178 /* the string or number proper */ 1179 #ifdef FLOATING_POINT 1180 if ((flags & FPT) == 0) { 1181 PRINT(cp, size); 1182 } else { /* glue together f_p fragments */ 1183 if (!expchar) { /* %[fF] or sufficiently short %[gG] */ 1184 if (expt <= 0) { 1185 PRINT(zeroes, 1); 1186 if (prec || flags & ALT) 1187 PRINT(decimal_point, 1); 1188 PAD(-expt, zeroes); 1189 /* already handled initial 0's */ 1190 prec += expt; 1191 } else { 1192 PRINTANDPAD(cp, convbuf + ndig, lead, zeroes); 1193 cp += lead; 1194 if (grouping) { 1195 while (nseps>0 || nrepeats>0) { 1196 if (nrepeats > 0) 1197 nrepeats--; 1198 else { 1199 grouping--; 1200 nseps--; 1201 } 1202 PRINT(&thousands_sep, 1203 1); 1204 PRINTANDPAD(cp, 1205 convbuf + ndig, 1206 *grouping, zeroes); 1207 cp += *grouping; 1208 } 1209 if (cp > convbuf + ndig) 1210 cp = convbuf + ndig; 1211 } 1212 if (prec || flags & ALT) { 1213 buf[0] = *decimal_point; 1214 PRINT(buf, 1); 1215 } 1216 } 1217 PRINTANDPAD(cp, convbuf + ndig, prec, zeroes); 1218 } else { /* %[eE] or sufficiently long %[gG] */ 1219 if (prec > 1 || flags & ALT) { 1220 buf[0] = *cp++; 1221 buf[1] = *decimal_point; 1222 PRINT(buf, 2); 1223 PRINT(cp, ndig-1); 1224 PAD(prec - ndig, zeroes); 1225 } else /* XeYYY */ 1226 PRINT(cp, 1); 1227 PRINT(expstr, expsize); 1228 } 1229 } 1230 #else 1231 PRINT(cp, size); 1232 #endif 1233 /* left-adjusting padding (always blank) */ 1234 if (flags & LADJUST) 1235 PAD(width - realsz, blanks); 1236 1237 /* finally, adjust ret */ 1238 ret += prsize; 1239 } 1240 done: 1241 error: 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) : 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 memset (typetable, T_UNUSED, STATIC_ARG_TBL_SIZE); 1321 1322 /* 1323 * Scan the format for conversions (`%' character). 1324 */ 1325 for (;;) { 1326 for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++) 1327 /* void */; 1328 if (ch == '\0') 1329 goto done; 1330 fmt++; /* skip over '%' */ 1331 1332 flags = 0; 1333 width = 0; 1334 1335 rflag: ch = *fmt++; 1336 reswitch: switch (ch) { 1337 case ' ': 1338 case '#': 1339 goto rflag; 1340 case '*': 1341 ADDASTER (); 1342 goto rflag; 1343 case '-': 1344 case '+': 1345 case '\'': 1346 goto rflag; 1347 case '.': 1348 if ((ch = *fmt++) == '*') { 1349 ADDASTER (); 1350 goto rflag; 1351 } 1352 while (is_digit(ch)) { 1353 ch = *fmt++; 1354 } 1355 goto reswitch; 1356 case '0': 1357 goto rflag; 1358 case '1': case '2': case '3': case '4': 1359 case '5': case '6': case '7': case '8': case '9': 1360 n = 0; 1361 do { 1362 n = 10 * n + to_digit(ch); 1363 ch = *fmt++; 1364 } while (is_digit(ch)); 1365 if (ch == '$') { 1366 nextarg = n; 1367 goto rflag; 1368 } 1369 width = n; 1370 goto reswitch; 1371 #ifdef FLOATING_POINT 1372 case 'L': 1373 flags |= LONGDBL; 1374 goto rflag; 1375 #endif 1376 case 'h': 1377 if (flags & SHORTINT) { 1378 flags &= ~SHORTINT; 1379 flags |= CHARINT; 1380 } else 1381 flags |= SHORTINT; 1382 goto rflag; 1383 case 'j': 1384 flags |= INTMAXT; 1385 goto rflag; 1386 case 'l': 1387 if (flags & LONGINT) { 1388 flags &= ~LONGINT; 1389 flags |= LLONGINT; 1390 } else 1391 flags |= LONGINT; 1392 goto rflag; 1393 case 'q': 1394 flags |= LLONGINT; /* not necessarily */ 1395 goto rflag; 1396 case 't': 1397 flags |= PTRDIFFT; 1398 goto rflag; 1399 case 'z': 1400 flags |= SIZET; 1401 goto rflag; 1402 case 'C': 1403 flags |= LONGINT; 1404 /*FALLTHROUGH*/ 1405 case 'c': 1406 if (flags & LONGINT) 1407 ADDTYPE(T_WINT); 1408 else 1409 ADDTYPE(T_INT); 1410 break; 1411 case 'D': 1412 flags |= LONGINT; 1413 /*FALLTHROUGH*/ 1414 case 'd': 1415 case 'i': 1416 ADDSARG(); 1417 break; 1418 #ifdef FLOATING_POINT 1419 #ifdef HEXFLOAT 1420 case 'a': 1421 case 'A': 1422 #endif 1423 case 'e': 1424 case 'E': 1425 case 'f': 1426 case 'g': 1427 case 'G': 1428 if (flags & LONGDBL) 1429 ADDTYPE(T_LONG_DOUBLE); 1430 else 1431 ADDTYPE(T_DOUBLE); 1432 break; 1433 #endif /* FLOATING_POINT */ 1434 case 'n': 1435 if (flags & INTMAXT) 1436 ADDTYPE(TP_INTMAXT); 1437 else if (flags & PTRDIFFT) 1438 ADDTYPE(TP_PTRDIFFT); 1439 else if (flags & SIZET) 1440 ADDTYPE(TP_SIZET); 1441 else if (flags & LLONGINT) 1442 ADDTYPE(TP_LLONG); 1443 else if (flags & LONGINT) 1444 ADDTYPE(TP_LONG); 1445 else if (flags & SHORTINT) 1446 ADDTYPE(TP_SHORT); 1447 else if (flags & CHARINT) 1448 ADDTYPE(TP_SCHAR); 1449 else 1450 ADDTYPE(TP_INT); 1451 continue; /* no output */ 1452 case 'O': 1453 flags |= LONGINT; 1454 /*FALLTHROUGH*/ 1455 case 'o': 1456 ADDUARG(); 1457 break; 1458 case 'p': 1459 ADDTYPE(TP_VOID); 1460 break; 1461 case 'S': 1462 flags |= LONGINT; 1463 /*FALLTHROUGH*/ 1464 case 's': 1465 if (flags & LONGINT) 1466 ADDTYPE(TP_WCHAR); 1467 else 1468 ADDTYPE(TP_CHAR); 1469 break; 1470 case 'U': 1471 flags |= LONGINT; 1472 /*FALLTHROUGH*/ 1473 case 'u': 1474 case 'X': 1475 case 'x': 1476 ADDUARG(); 1477 break; 1478 default: /* "%?" prints ?, unless ? is NUL */ 1479 if (ch == '\0') 1480 goto done; 1481 break; 1482 } 1483 } 1484 done: 1485 /* 1486 * Build the argument table. 1487 */ 1488 if (tablemax >= STATIC_ARG_TBL_SIZE) { 1489 *argtable = (union arg *) 1490 malloc (sizeof (union arg) * (tablemax + 1)); 1491 } 1492 1493 (*argtable) [0].intarg = 0; 1494 for (n = 1; n <= tablemax; n++) { 1495 switch (typetable [n]) { 1496 case T_UNUSED: /* whoops! */ 1497 (*argtable) [n].intarg = va_arg (ap, int); 1498 break; 1499 case TP_SCHAR: 1500 (*argtable) [n].pschararg = va_arg (ap, signed char *); 1501 break; 1502 case TP_SHORT: 1503 (*argtable) [n].pshortarg = va_arg (ap, short *); 1504 break; 1505 case T_INT: 1506 (*argtable) [n].intarg = va_arg (ap, int); 1507 break; 1508 case T_U_INT: 1509 (*argtable) [n].uintarg = va_arg (ap, unsigned int); 1510 break; 1511 case TP_INT: 1512 (*argtable) [n].pintarg = va_arg (ap, int *); 1513 break; 1514 case T_LONG: 1515 (*argtable) [n].longarg = va_arg (ap, long); 1516 break; 1517 case T_U_LONG: 1518 (*argtable) [n].ulongarg = va_arg (ap, unsigned long); 1519 break; 1520 case TP_LONG: 1521 (*argtable) [n].plongarg = va_arg (ap, long *); 1522 break; 1523 case T_LLONG: 1524 (*argtable) [n].longlongarg = va_arg (ap, long long); 1525 break; 1526 case T_U_LLONG: 1527 (*argtable) [n].ulonglongarg = va_arg (ap, unsigned long long); 1528 break; 1529 case TP_LLONG: 1530 (*argtable) [n].plonglongarg = va_arg (ap, long long *); 1531 break; 1532 case T_PTRDIFFT: 1533 (*argtable) [n].ptrdiffarg = va_arg (ap, ptrdiff_t); 1534 break; 1535 case TP_PTRDIFFT: 1536 (*argtable) [n].pptrdiffarg = va_arg (ap, ptrdiff_t *); 1537 break; 1538 case T_SIZET: 1539 (*argtable) [n].sizearg = va_arg (ap, size_t); 1540 break; 1541 case TP_SIZET: 1542 (*argtable) [n].psizearg = va_arg (ap, ssize_t *); 1543 break; 1544 case T_INTMAXT: 1545 (*argtable) [n].intmaxarg = va_arg (ap, intmax_t); 1546 break; 1547 case T_UINTMAXT: 1548 (*argtable) [n].uintmaxarg = va_arg (ap, uintmax_t); 1549 break; 1550 case TP_INTMAXT: 1551 (*argtable) [n].pintmaxarg = va_arg (ap, intmax_t *); 1552 break; 1553 #ifdef FLOATING_POINT 1554 case T_DOUBLE: 1555 (*argtable) [n].doublearg = va_arg (ap, double); 1556 break; 1557 case T_LONG_DOUBLE: 1558 (*argtable) [n].longdoublearg = va_arg (ap, long double); 1559 break; 1560 #endif 1561 case TP_CHAR: 1562 (*argtable) [n].pchararg = va_arg (ap, char *); 1563 break; 1564 case TP_VOID: 1565 (*argtable) [n].pvoidarg = va_arg (ap, void *); 1566 break; 1567 case T_WINT: 1568 (*argtable) [n].wintarg = va_arg (ap, wint_t); 1569 break; 1570 case TP_WCHAR: 1571 (*argtable) [n].pwchararg = va_arg (ap, wchar_t *); 1572 break; 1573 } 1574 } 1575 1576 if ((typetable != NULL) && (typetable != stattypetable)) 1577 free (typetable); 1578 } 1579 1580 /* 1581 * Increase the size of the type table. 1582 */ 1583 static void 1584 __grow_type_table (int nextarg, enum typeid **typetable, int *tablesize) 1585 { 1586 enum typeid *const oldtable = *typetable; 1587 const int oldsize = *tablesize; 1588 enum typeid *newtable; 1589 int newsize = oldsize * 2; 1590 1591 if (newsize < nextarg + 1) 1592 newsize = nextarg + 1; 1593 if (oldsize == STATIC_ARG_TBL_SIZE) { 1594 if ((newtable = malloc(newsize)) == NULL) 1595 abort(); /* XXX handle better */ 1596 bcopy(oldtable, newtable, oldsize); 1597 } else { 1598 if ((newtable = reallocf(oldtable, newsize)) == NULL) 1599 abort(); /* XXX handle better */ 1600 } 1601 memset(&newtable[oldsize], T_UNUSED, newsize - oldsize); 1602 1603 *typetable = newtable; 1604 *tablesize = newsize; 1605 } 1606 1607 1608 #ifdef FLOATING_POINT 1609 1610 static int 1611 exponent(wchar_t *p0, int exp, wchar_t fmtch) 1612 { 1613 wchar_t *p, *t; 1614 wchar_t expbuf[MAXEXPDIG]; 1615 1616 p = p0; 1617 *p++ = fmtch; 1618 if (exp < 0) { 1619 exp = -exp; 1620 *p++ = '-'; 1621 } 1622 else 1623 *p++ = '+'; 1624 t = expbuf + MAXEXPDIG; 1625 if (exp > 9) { 1626 do { 1627 *--t = to_char(exp % 10); 1628 } while ((exp /= 10) > 9); 1629 *--t = to_char(exp); 1630 for (; t < expbuf + MAXEXPDIG; *p++ = *t++); 1631 } 1632 else { 1633 /* 1634 * Exponents for decimal floating point conversions 1635 * (%[eEgG]) must be at least two characters long, 1636 * whereas exponents for hexadecimal conversions can 1637 * be only one character long. 1638 */ 1639 if (fmtch == 'e' || fmtch == 'E') 1640 *p++ = '0'; 1641 *p++ = to_char(exp); 1642 } 1643 return (p - p0); 1644 } 1645 #endif /* FLOATING_POINT */ 1646