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 char buf[MB_LEN_MAX]; 168 struct __suio uio; 169 struct __siov iov; 170 size_t len; 171 172 if ((fp->_flags & __SSTR) == 0) 173 return (__fputwc(wc, fp)); 174 175 if ((len = wcrtomb(buf, wc, NULL)) == (size_t)-1) { 176 fp->_flags |= __SERR; 177 return (WEOF); 178 } 179 uio.uio_iov = &iov; 180 uio.uio_resid = len; 181 uio.uio_iovcnt = 1; 182 iov.iov_base = buf; 183 iov.iov_len = len; 184 return (__sfvwrite(fp, &uio) != EOF ? (wint_t)wc : WEOF); 185 } 186 187 /* 188 * Macros for converting digits to letters and vice versa 189 */ 190 #define to_digit(c) ((c) - '0') 191 #define is_digit(c) ((unsigned)to_digit(c) <= 9) 192 #define to_char(n) ((n) + '0') 193 194 /* 195 * Convert an unsigned long to ASCII for printf purposes, returning 196 * a pointer to the first character of the string representation. 197 * Octal numbers can be forced to have a leading zero; hex numbers 198 * use the given digits. 199 */ 200 static wchar_t * 201 __ultoa(u_long val, wchar_t *endp, int base, int octzero, const char *xdigs, 202 int needgrp, char thousep, const char *grp) 203 { 204 wchar_t *cp = endp; 205 long sval; 206 int ndig; 207 208 /* 209 * Handle the three cases separately, in the hope of getting 210 * better/faster code. 211 */ 212 switch (base) { 213 case 10: 214 if (val < 10) { /* many numbers are 1 digit */ 215 *--cp = to_char(val); 216 return (cp); 217 } 218 ndig = 0; 219 /* 220 * On many machines, unsigned arithmetic is harder than 221 * signed arithmetic, so we do at most one unsigned mod and 222 * divide; this is sufficient to reduce the range of 223 * the incoming value to where signed arithmetic works. 224 */ 225 if (val > LONG_MAX) { 226 *--cp = to_char(val % 10); 227 ndig++; 228 sval = val / 10; 229 } else 230 sval = val; 231 do { 232 *--cp = to_char(sval % 10); 233 ndig++; 234 /* 235 * If (*grp == CHAR_MAX) then no more grouping 236 * should be performed. 237 */ 238 if (needgrp && ndig == *grp && *grp != CHAR_MAX 239 && sval > 9) { 240 *--cp = thousep; 241 ndig = 0; 242 /* 243 * If (*(grp+1) == '\0') then we have to 244 * use *grp character (last grouping rule) 245 * for all next cases 246 */ 247 if (*(grp+1) != '\0') 248 grp++; 249 } 250 sval /= 10; 251 } while (sval != 0); 252 break; 253 254 case 8: 255 do { 256 *--cp = to_char(val & 7); 257 val >>= 3; 258 } while (val); 259 if (octzero && *cp != '0') 260 *--cp = '0'; 261 break; 262 263 case 16: 264 do { 265 *--cp = xdigs[val & 15]; 266 val >>= 4; 267 } while (val); 268 break; 269 270 default: /* oops */ 271 abort(); 272 } 273 return (cp); 274 } 275 276 /* Identical to __ultoa, but for intmax_t. */ 277 static wchar_t * 278 __ujtoa(uintmax_t val, wchar_t *endp, int base, int octzero, 279 const char *xdigs, int needgrp, char thousep, const char *grp) 280 { 281 wchar_t *cp = endp; 282 intmax_t sval; 283 int ndig; 284 285 /* quick test for small values; __ultoa is typically much faster */ 286 /* (perhaps instead we should run until small, then call __ultoa?) */ 287 if (val <= ULONG_MAX) 288 return (__ultoa((u_long)val, endp, base, octzero, xdigs, 289 needgrp, thousep, grp)); 290 switch (base) { 291 case 10: 292 if (val < 10) { 293 *--cp = to_char(val % 10); 294 return (cp); 295 } 296 ndig = 0; 297 if (val > INTMAX_MAX) { 298 *--cp = to_char(val % 10); 299 ndig++; 300 sval = val / 10; 301 } else 302 sval = val; 303 do { 304 *--cp = to_char(sval % 10); 305 ndig++; 306 /* 307 * If (*grp == CHAR_MAX) then no more grouping 308 * should be performed. 309 */ 310 if (needgrp && *grp != CHAR_MAX && ndig == *grp 311 && sval > 9) { 312 *--cp = thousep; 313 ndig = 0; 314 /* 315 * If (*(grp+1) == '\0') then we have to 316 * use *grp character (last grouping rule) 317 * for all next cases 318 */ 319 if (*(grp+1) != '\0') 320 grp++; 321 } 322 sval /= 10; 323 } while (sval != 0); 324 break; 325 326 case 8: 327 do { 328 *--cp = to_char(val & 7); 329 val >>= 3; 330 } while (val); 331 if (octzero && *cp != '0') 332 *--cp = '0'; 333 break; 334 335 case 16: 336 do { 337 *--cp = xdigs[val & 15]; 338 val >>= 4; 339 } while (val); 340 break; 341 342 default: 343 abort(); 344 } 345 return (cp); 346 } 347 348 /* 349 * Convert a multibyte character string argument for the %s format to a wide 350 * string representation. ``prec'' specifies the maximum number of bytes 351 * to output. If ``prec'' is greater than or equal to zero, we can't assume 352 * that the multibyte char. string ends in a null character. 353 */ 354 static wchar_t * 355 __mbsconv(char *mbsarg, int prec) 356 { 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 while (nchars != (size_t)prec) { 376 nconv = mbrlen(p, MB_CUR_MAX, NULL); 377 if (nconv == 0 || nconv == (size_t)-1 || 378 nconv == (size_t)-2) 379 break; 380 p += nconv; 381 nchars++; 382 insize += nconv; 383 } 384 if (nconv == (size_t)-1 || nconv == (size_t)-2) 385 return (NULL); 386 } else 387 insize = strlen(mbsarg); 388 389 /* 390 * Allocate buffer for the result and perform the conversion, 391 * converting at most `size' bytes of the input multibyte string to 392 * wide characters for printing. 393 */ 394 convbuf = malloc((insize + 1) * sizeof(*convbuf)); 395 if (convbuf == NULL) 396 return (NULL); 397 wcp = convbuf; 398 p = mbsarg; 399 while (insize != 0) { 400 nconv = mbrtowc(wcp, p, insize, NULL); 401 if (nconv == 0 || nconv == (size_t)-1 || nconv == (size_t)-2) 402 break; 403 wcp++; 404 p += nconv; 405 insize -= nconv; 406 } 407 if (nconv == (size_t)-1 || nconv == (size_t)-2) { 408 free(convbuf); 409 return (NULL); 410 } 411 *wcp = L'\0'; 412 413 return (convbuf); 414 } 415 416 /* 417 * MT-safe version 418 */ 419 int 420 vfwprintf(FILE * __restrict fp, const wchar_t * __restrict fmt0, va_list ap) 421 422 { 423 int ret; 424 425 FLOCKFILE(fp); 426 ret = __vfwprintf(fp, fmt0, ap); 427 FUNLOCKFILE(fp); 428 return (ret); 429 } 430 431 #ifdef FLOATING_POINT 432 433 #define dtoa __dtoa 434 #define freedtoa __freedtoa 435 436 #include <float.h> 437 #include <math.h> 438 #include "floatio.h" 439 #include "gdtoa.h" 440 441 #define DEFPREC 6 442 443 static int exponent(wchar_t *, int, wchar_t); 444 445 #endif /* FLOATING_POINT */ 446 447 /* 448 * The size of the buffer we use as scratch space for integer 449 * conversions, among other things. Technically, we would need the 450 * most space for base 10 conversions with thousands' grouping 451 * characters between each pair of digits. 100 bytes is a 452 * conservative overestimate even for a 128-bit uintmax_t. 453 */ 454 #define BUF 100 455 456 #define STATIC_ARG_TBL_SIZE 8 /* Size of static argument table. */ 457 458 /* 459 * Flags used during conversion. 460 */ 461 #define ALT 0x001 /* alternate form */ 462 #define LADJUST 0x004 /* left adjustment */ 463 #define LONGDBL 0x008 /* long double */ 464 #define LONGINT 0x010 /* long integer */ 465 #define LLONGINT 0x020 /* long long integer */ 466 #define SHORTINT 0x040 /* short integer */ 467 #define ZEROPAD 0x080 /* zero (as opposed to blank) pad */ 468 #define FPT 0x100 /* Floating point number */ 469 #define GROUPING 0x200 /* use grouping ("'" flag) */ 470 /* C99 additional size modifiers: */ 471 #define SIZET 0x400 /* size_t */ 472 #define PTRDIFFT 0x800 /* ptrdiff_t */ 473 #define INTMAXT 0x1000 /* intmax_t */ 474 #define CHARINT 0x2000 /* print char using int format */ 475 476 /* 477 * Non-MT-safe version 478 */ 479 int 480 __vfwprintf(FILE *fp, const wchar_t *fmt0, va_list ap) 481 { 482 wchar_t *fmt; /* format string */ 483 wchar_t ch; /* character from fmt */ 484 int n, n2, n3; /* handy integer (short term usage) */ 485 wchar_t *cp; /* handy char pointer (short term usage) */ 486 int flags; /* flags as above */ 487 int ret; /* return value accumulator */ 488 int width; /* width from format (%8d), or 0 */ 489 int prec; /* precision from format; <0 for N/A */ 490 wchar_t sign; /* sign prefix (' ', '+', '-', or \0) */ 491 char thousands_sep; /* locale specific thousands separator */ 492 const char *grouping; /* locale specific numeric grouping rules */ 493 #ifdef FLOATING_POINT 494 /* 495 * We can decompose the printed representation of floating 496 * point numbers into several parts, some of which may be empty: 497 * 498 * [+|-| ] [0x|0X] MMM . NNN [e|E|p|P] [+|-] ZZ 499 * A B ---C--- D E F 500 * 501 * A: 'sign' holds this value if present; '\0' otherwise 502 * B: ox[1] holds the 'x' or 'X'; '\0' if not hexadecimal 503 * C: cp points to the string MMMNNN. Leading and trailing 504 * zeros are not in the string and must be added. 505 * D: expchar holds this character; '\0' if no exponent, e.g. %f 506 * F: at least two digits for decimal, at least one digit for hex 507 */ 508 char *decimal_point; /* locale specific decimal point */ 509 int signflag; /* true if float is negative */ 510 union { /* floating point arguments %[aAeEfFgG] */ 511 double dbl; 512 long double ldbl; 513 } fparg; 514 int expt; /* integer value of exponent */ 515 char expchar; /* exponent character: [eEpP\0] */ 516 char *dtoaend; /* pointer to end of converted digits */ 517 int expsize; /* character count for expstr */ 518 int lead; /* sig figs before decimal or group sep */ 519 int ndig; /* actual number of digits returned by dtoa */ 520 wchar_t expstr[MAXEXPDIG+2]; /* buffer for exponent string: e+ZZZ */ 521 char *dtoaresult; /* buffer allocated by dtoa */ 522 int nseps; /* number of group separators with ' */ 523 int nrepeats; /* number of repeats of the last group */ 524 #endif 525 u_long ulval; /* integer arguments %[diouxX] */ 526 uintmax_t ujval; /* %j, %ll, %q, %t, %z integers */ 527 int base; /* base for [diouxX] conversion */ 528 int dprec; /* a copy of prec if [diouxX], 0 otherwise */ 529 int realsz; /* field size expanded by dprec, sign, etc */ 530 int size; /* size of converted field or string */ 531 int prsize; /* max size of printed field */ 532 const char *xdigs; /* digits for [xX] conversion */ 533 wchar_t buf[BUF]; /* buffer with space for digits of uintmax_t */ 534 wchar_t ox[2]; /* space for 0x hex-prefix */ 535 union arg *argtable; /* args, built due to positional arg */ 536 union arg statargtable [STATIC_ARG_TBL_SIZE]; 537 int nextarg; /* 1-based argument index */ 538 va_list orgap; /* original argument pointer */ 539 wchar_t *convbuf; /* multibyte to wide conversion result */ 540 541 /* 542 * Choose PADSIZE to trade efficiency vs. size. If larger printf 543 * fields occur frequently, increase PADSIZE and make the initialisers 544 * below longer. 545 */ 546 #define PADSIZE 16 /* pad chunk size */ 547 static wchar_t blanks[PADSIZE] = 548 {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '}; 549 static wchar_t zeroes[PADSIZE] = 550 {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'}; 551 552 static const char xdigs_lower[16] = "0123456789abcdef"; 553 static const char xdigs_upper[16] = "0123456789ABCDEF"; 554 555 /* 556 * BEWARE, these `goto error' on error, PRINT uses `n2' and 557 * PAD uses `n'. 558 */ 559 #define PRINT(ptr, len) do { \ 560 for (n3 = 0; n3 < (len); n3++) \ 561 __xfputwc((ptr)[n3], fp); \ 562 } while (0) 563 #define PAD(howmany, with) do { \ 564 if ((n = (howmany)) > 0) { \ 565 while (n > PADSIZE) { \ 566 PRINT(with, PADSIZE); \ 567 n -= PADSIZE; \ 568 } \ 569 PRINT(with, n); \ 570 } \ 571 } while (0) 572 #define PRINTANDPAD(p, ep, len, with) do { \ 573 n2 = (ep) - (p); \ 574 if (n2 > (len)) \ 575 n2 = (len); \ 576 if (n2 > 0) \ 577 PRINT((p), n2); \ 578 PAD((len) - (n2 > 0 ? n2 : 0), (with)); \ 579 } while(0) 580 581 /* 582 * Get the argument indexed by nextarg. If the argument table is 583 * built, use it to get the argument. If its not, get the next 584 * argument (and arguments must be gotten sequentially). 585 */ 586 #define GETARG(type) \ 587 ((argtable != NULL) ? *((type*)(&argtable[nextarg++])) : \ 588 (nextarg++, va_arg(ap, type))) 589 590 /* 591 * To extend shorts properly, we need both signed and unsigned 592 * argument extraction methods. 593 */ 594 #define SARG() \ 595 (flags&LONGINT ? GETARG(long) : \ 596 flags&SHORTINT ? (long)(short)GETARG(int) : \ 597 flags&CHARINT ? (long)(signed char)GETARG(int) : \ 598 (long)GETARG(int)) 599 #define UARG() \ 600 (flags&LONGINT ? GETARG(u_long) : \ 601 flags&SHORTINT ? (u_long)(u_short)GETARG(int) : \ 602 flags&CHARINT ? (u_long)(u_char)GETARG(int) : \ 603 (u_long)GETARG(u_int)) 604 #define INTMAX_SIZE (INTMAXT|SIZET|PTRDIFFT|LLONGINT) 605 #define SJARG() \ 606 (flags&INTMAXT ? GETARG(intmax_t) : \ 607 flags&SIZET ? (intmax_t)GETARG(size_t) : \ 608 flags&PTRDIFFT ? (intmax_t)GETARG(ptrdiff_t) : \ 609 (intmax_t)GETARG(long long)) 610 #define UJARG() \ 611 (flags&INTMAXT ? GETARG(uintmax_t) : \ 612 flags&SIZET ? (uintmax_t)GETARG(size_t) : \ 613 flags&PTRDIFFT ? (uintmax_t)GETARG(ptrdiff_t) : \ 614 (uintmax_t)GETARG(unsigned long long)) 615 616 /* 617 * Get * arguments, including the form *nn$. Preserve the nextarg 618 * that the argument can be gotten once the type is determined. 619 */ 620 #define GETASTER(val) \ 621 n2 = 0; \ 622 cp = fmt; \ 623 while (is_digit(*cp)) { \ 624 n2 = 10 * n2 + to_digit(*cp); \ 625 cp++; \ 626 } \ 627 if (*cp == '$') { \ 628 int hold = nextarg; \ 629 if (argtable == NULL) { \ 630 argtable = statargtable; \ 631 __find_arguments (fmt0, orgap, &argtable); \ 632 } \ 633 nextarg = n2; \ 634 val = GETARG (int); \ 635 nextarg = hold; \ 636 fmt = ++cp; \ 637 } else { \ 638 val = GETARG (int); \ 639 } 640 641 642 thousands_sep = '\0'; 643 grouping = NULL; 644 #ifdef FLOATING_POINT 645 decimal_point = localeconv()->decimal_point; 646 #endif 647 convbuf = NULL; 648 /* sorry, fwprintf(read_only_file, L"") returns WEOF, not 0 */ 649 if (cantwrite(fp)) 650 return (EOF); 651 652 /* optimise fprintf(stderr) (and other unbuffered Unix files) */ 653 if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) && 654 fp->_file >= 0) 655 return (__sbprintf(fp, fmt0, ap)); 656 657 fmt = (wchar_t *)fmt0; 658 argtable = NULL; 659 nextarg = 1; 660 va_copy(orgap, ap); 661 ret = 0; 662 663 /* 664 * Scan the format for conversions (`%' character). 665 */ 666 for (;;) { 667 for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++) 668 /* void */; 669 if ((n = fmt - cp) != 0) { 670 if ((unsigned)ret + n > INT_MAX) { 671 ret = EOF; 672 goto error; 673 } 674 PRINT(cp, n); 675 ret += n; 676 } 677 if (ch == '\0') 678 goto done; 679 fmt++; /* skip over '%' */ 680 681 flags = 0; 682 dprec = 0; 683 width = 0; 684 prec = -1; 685 sign = '\0'; 686 ox[1] = '\0'; 687 688 rflag: ch = *fmt++; 689 reswitch: switch (ch) { 690 case ' ': 691 /*- 692 * ``If the space and + flags both appear, the space 693 * flag will be ignored.'' 694 * -- ANSI X3J11 695 */ 696 if (!sign) 697 sign = ' '; 698 goto rflag; 699 case '#': 700 flags |= ALT; 701 goto rflag; 702 case '*': 703 /*- 704 * ``A negative field width argument is taken as a 705 * - flag followed by a positive field width.'' 706 * -- ANSI X3J11 707 * They don't exclude field widths read from args. 708 */ 709 GETASTER (width); 710 if (width >= 0) 711 goto rflag; 712 width = -width; 713 /* FALLTHROUGH */ 714 case '-': 715 flags |= LADJUST; 716 goto rflag; 717 case '+': 718 sign = '+'; 719 goto rflag; 720 case '\'': 721 flags |= GROUPING; 722 thousands_sep = *(localeconv()->thousands_sep); 723 grouping = localeconv()->grouping; 724 goto rflag; 725 case '.': 726 if ((ch = *fmt++) == '*') { 727 GETASTER (prec); 728 goto rflag; 729 } 730 prec = 0; 731 while (is_digit(ch)) { 732 prec = 10 * prec + to_digit(ch); 733 ch = *fmt++; 734 } 735 goto reswitch; 736 case '0': 737 /*- 738 * ``Note that 0 is taken as a flag, not as the 739 * beginning of a field width.'' 740 * -- ANSI X3J11 741 */ 742 flags |= ZEROPAD; 743 goto rflag; 744 case '1': case '2': case '3': case '4': 745 case '5': case '6': case '7': case '8': case '9': 746 n = 0; 747 do { 748 n = 10 * n + to_digit(ch); 749 ch = *fmt++; 750 } while (is_digit(ch)); 751 if (ch == '$') { 752 nextarg = n; 753 if (argtable == NULL) { 754 argtable = statargtable; 755 __find_arguments (fmt0, orgap, 756 &argtable); 757 } 758 goto rflag; 759 } 760 width = n; 761 goto reswitch; 762 #ifdef FLOATING_POINT 763 case 'L': 764 flags |= LONGDBL; 765 goto rflag; 766 #endif 767 case 'h': 768 if (flags & SHORTINT) { 769 flags &= ~SHORTINT; 770 flags |= CHARINT; 771 } else 772 flags |= SHORTINT; 773 goto rflag; 774 case 'j': 775 flags |= INTMAXT; 776 goto rflag; 777 case 'l': 778 if (flags & LONGINT) { 779 flags &= ~LONGINT; 780 flags |= LLONGINT; 781 } else 782 flags |= LONGINT; 783 goto rflag; 784 case 'q': 785 flags |= LLONGINT; /* not necessarily */ 786 goto rflag; 787 case 't': 788 flags |= PTRDIFFT; 789 goto rflag; 790 case 'z': 791 flags |= SIZET; 792 goto rflag; 793 case 'C': 794 flags |= LONGINT; 795 /*FALLTHROUGH*/ 796 case 'c': 797 if (flags & LONGINT) 798 *(cp = buf) = (wchar_t)GETARG(wint_t); 799 else 800 *(cp = buf) = (wchar_t)btowc(GETARG(int)); 801 size = 1; 802 sign = '\0'; 803 break; 804 case 'D': 805 flags |= LONGINT; 806 /*FALLTHROUGH*/ 807 case 'd': 808 case 'i': 809 if (flags & INTMAX_SIZE) { 810 ujval = SJARG(); 811 if ((intmax_t)ujval < 0) { 812 ujval = -ujval; 813 sign = '-'; 814 } 815 } else { 816 ulval = SARG(); 817 if ((long)ulval < 0) { 818 ulval = -ulval; 819 sign = '-'; 820 } 821 } 822 base = 10; 823 goto number; 824 #ifdef FLOATING_POINT 825 #ifdef HEXFLOAT 826 case 'a': 827 case 'A': 828 if (ch == 'a') { 829 ox[1] = 'x'; 830 xdigs = xdigs_lower; 831 expchar = 'p'; 832 } else { 833 ox[1] = 'X'; 834 xdigs = xdigs_upper; 835 expchar = 'P'; 836 } 837 if (prec >= 0) 838 prec++; 839 if (flags & LONGDBL) { 840 fparg.ldbl = GETARG(long double); 841 dtoaresult = 842 __hldtoa(fparg.ldbl, xdigs, prec, 843 &expt, &signflag, &dtoaend); 844 } else { 845 fparg.dbl = GETARG(double); 846 dtoaresult = 847 __hdtoa(fparg.dbl, xdigs, prec, 848 &expt, &signflag, &dtoaend); 849 } 850 if (prec < 0) 851 prec = dtoaend - dtoaresult; 852 if (expt == INT_MAX) 853 ox[1] = '\0'; 854 if (convbuf != NULL) 855 free(convbuf); 856 ndig = dtoaend - dtoaresult; 857 cp = convbuf = __mbsconv(dtoaresult, -1); 858 freedtoa(dtoaresult); 859 goto fp_common; 860 #endif /* HEXFLOAT */ 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 /* 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 cp = buf + BUF; 1097 if (flags & INTMAX_SIZE) { 1098 if (ujval != 0 || prec != 0) 1099 cp = __ujtoa(ujval, cp, base, 1100 flags & ALT, xdigs, 1101 flags & GROUPING, thousands_sep, 1102 grouping); 1103 } else { 1104 if (ulval != 0 || prec != 0) 1105 cp = __ultoa(ulval, cp, base, 1106 flags & ALT, xdigs, 1107 flags & GROUPING, thousands_sep, 1108 grouping); 1109 } 1110 size = buf + BUF - cp; 1111 if (size > BUF) /* should never happen */ 1112 abort(); 1113 break; 1114 default: /* "%?" prints ?, unless ? is NUL */ 1115 if (ch == '\0') 1116 goto done; 1117 /* pretend it was %c with argument ch */ 1118 cp = buf; 1119 *cp = ch; 1120 size = 1; 1121 sign = '\0'; 1122 break; 1123 } 1124 1125 /* 1126 * All reasonable formats wind up here. At this point, `cp' 1127 * points to a string which (if not flags&LADJUST) should be 1128 * padded out to `width' places. If flags&ZEROPAD, it should 1129 * first be prefixed by any sign or other prefix; otherwise, 1130 * it should be blank padded before the prefix is emitted. 1131 * After any left-hand padding and prefixing, emit zeroes 1132 * required by a decimal [diouxX] precision, then print the 1133 * string proper, then emit zeroes required by any leftover 1134 * floating precision; finally, if LADJUST, pad with blanks. 1135 * 1136 * Compute actual size, so we know how much to pad. 1137 * size excludes decimal prec; realsz includes it. 1138 */ 1139 realsz = dprec > size ? dprec : size; 1140 if (sign) 1141 realsz++; 1142 if (ox[1]) 1143 realsz += 2; 1144 1145 prsize = width > realsz ? width : realsz; 1146 if ((unsigned)ret + prsize > INT_MAX) { 1147 ret = EOF; 1148 goto error; 1149 } 1150 1151 /* right-adjusting blank padding */ 1152 if ((flags & (LADJUST|ZEROPAD)) == 0) 1153 PAD(width - realsz, blanks); 1154 1155 /* prefix */ 1156 if (sign) 1157 PRINT(&sign, 1); 1158 1159 if (ox[1]) { /* ox[1] is either x, X, or \0 */ 1160 ox[0] = '0'; 1161 PRINT(ox, 2); 1162 } 1163 1164 /* right-adjusting zero padding */ 1165 if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD) 1166 PAD(width - realsz, zeroes); 1167 1168 /* leading zeroes from decimal precision */ 1169 PAD(dprec - size, zeroes); 1170 1171 /* the string or number proper */ 1172 #ifdef FLOATING_POINT 1173 if ((flags & FPT) == 0) { 1174 PRINT(cp, size); 1175 } else { /* glue together f_p fragments */ 1176 if (!expchar) { /* %[fF] or sufficiently short %[gG] */ 1177 if (expt <= 0) { 1178 PRINT(zeroes, 1); 1179 if (prec || flags & ALT) 1180 PRINT(decimal_point, 1); 1181 PAD(-expt, zeroes); 1182 /* already handled initial 0's */ 1183 prec += expt; 1184 } else { 1185 PRINTANDPAD(cp, convbuf + ndig, lead, zeroes); 1186 cp += lead; 1187 if (grouping) { 1188 while (nseps>0 || nrepeats>0) { 1189 if (nrepeats > 0) 1190 nrepeats--; 1191 else { 1192 grouping--; 1193 nseps--; 1194 } 1195 PRINT(&thousands_sep, 1196 1); 1197 PRINTANDPAD(cp, 1198 convbuf + ndig, 1199 *grouping, zeroes); 1200 cp += *grouping; 1201 } 1202 if (cp > convbuf + ndig) 1203 cp = convbuf + ndig; 1204 } 1205 if (prec || flags & ALT) { 1206 buf[0] = *decimal_point; 1207 PRINT(buf, 1); 1208 } 1209 } 1210 PRINTANDPAD(cp, convbuf + ndig, prec, zeroes); 1211 } else { /* %[eE] or sufficiently long %[gG] */ 1212 if (prec > 1 || flags & ALT) { 1213 buf[0] = *cp++; 1214 buf[1] = *decimal_point; 1215 PRINT(buf, 2); 1216 PRINT(cp, ndig-1); 1217 PAD(prec - ndig, zeroes); 1218 } else /* XeYYY */ 1219 PRINT(cp, 1); 1220 PRINT(expstr, expsize); 1221 } 1222 } 1223 #else 1224 PRINT(cp, size); 1225 #endif 1226 /* left-adjusting padding (always blank) */ 1227 if (flags & LADJUST) 1228 PAD(width - realsz, blanks); 1229 1230 /* finally, adjust ret */ 1231 ret += prsize; 1232 } 1233 done: 1234 error: 1235 if (convbuf != NULL) 1236 free(convbuf); 1237 if (__sferror(fp)) 1238 ret = EOF; 1239 if ((argtable != NULL) && (argtable != statargtable)) 1240 free (argtable); 1241 return (ret); 1242 /* NOTREACHED */ 1243 } 1244 1245 /* 1246 * Find all arguments when a positional parameter is encountered. Returns a 1247 * table, indexed by argument number, of pointers to each arguments. The 1248 * initial argument table should be an array of STATIC_ARG_TBL_SIZE entries. 1249 * It will be replaces with a malloc-ed one if it overflows. 1250 */ 1251 static void 1252 __find_arguments (const wchar_t *fmt0, va_list ap, union arg **argtable) 1253 { 1254 wchar_t *fmt; /* format string */ 1255 wchar_t ch; /* character from fmt */ 1256 int n, n2; /* handy integer (short term usage) */ 1257 wchar_t *cp; /* handy char pointer (short term usage) */ 1258 int flags; /* flags as above */ 1259 int width; /* width from format (%8d), or 0 */ 1260 enum typeid *typetable; /* table of types */ 1261 enum typeid stattypetable [STATIC_ARG_TBL_SIZE]; 1262 int tablesize; /* current size of type table */ 1263 int tablemax; /* largest used index in table */ 1264 int nextarg; /* 1-based argument index */ 1265 1266 /* 1267 * Add an argument type to the table, expanding if necessary. 1268 */ 1269 #define ADDTYPE(type) \ 1270 ((nextarg >= tablesize) ? \ 1271 __grow_type_table(nextarg, &typetable, &tablesize) : 0, \ 1272 (nextarg > tablemax) ? tablemax = nextarg : 0, \ 1273 typetable[nextarg++] = type) 1274 1275 #define ADDSARG() \ 1276 ((flags&INTMAXT) ? ADDTYPE(T_INTMAXT) : \ 1277 ((flags&SIZET) ? ADDTYPE(T_SIZET) : \ 1278 ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \ 1279 ((flags&LLONGINT) ? ADDTYPE(T_LLONG) : \ 1280 ((flags&LONGINT) ? ADDTYPE(T_LONG) : ADDTYPE(T_INT)))))) 1281 1282 #define ADDUARG() \ 1283 ((flags&INTMAXT) ? ADDTYPE(T_UINTMAXT) : \ 1284 ((flags&SIZET) ? ADDTYPE(T_SIZET) : \ 1285 ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \ 1286 ((flags&LLONGINT) ? ADDTYPE(T_U_LLONG) : \ 1287 ((flags&LONGINT) ? ADDTYPE(T_U_LONG) : ADDTYPE(T_U_INT)))))) 1288 1289 /* 1290 * Add * arguments to the type array. 1291 */ 1292 #define ADDASTER() \ 1293 n2 = 0; \ 1294 cp = fmt; \ 1295 while (is_digit(*cp)) { \ 1296 n2 = 10 * n2 + to_digit(*cp); \ 1297 cp++; \ 1298 } \ 1299 if (*cp == '$') { \ 1300 int hold = nextarg; \ 1301 nextarg = n2; \ 1302 ADDTYPE (T_INT); \ 1303 nextarg = hold; \ 1304 fmt = ++cp; \ 1305 } else { \ 1306 ADDTYPE (T_INT); \ 1307 } 1308 fmt = (wchar_t *)fmt0; 1309 typetable = stattypetable; 1310 tablesize = STATIC_ARG_TBL_SIZE; 1311 tablemax = 0; 1312 nextarg = 1; 1313 memset (typetable, T_UNUSED, STATIC_ARG_TBL_SIZE); 1314 1315 /* 1316 * Scan the format for conversions (`%' character). 1317 */ 1318 for (;;) { 1319 for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++) 1320 /* void */; 1321 if (ch == '\0') 1322 goto done; 1323 fmt++; /* skip over '%' */ 1324 1325 flags = 0; 1326 width = 0; 1327 1328 rflag: ch = *fmt++; 1329 reswitch: switch (ch) { 1330 case ' ': 1331 case '#': 1332 goto rflag; 1333 case '*': 1334 ADDASTER (); 1335 goto rflag; 1336 case '-': 1337 case '+': 1338 case '\'': 1339 goto rflag; 1340 case '.': 1341 if ((ch = *fmt++) == '*') { 1342 ADDASTER (); 1343 goto rflag; 1344 } 1345 while (is_digit(ch)) { 1346 ch = *fmt++; 1347 } 1348 goto reswitch; 1349 case '0': 1350 goto rflag; 1351 case '1': case '2': case '3': case '4': 1352 case '5': case '6': case '7': case '8': case '9': 1353 n = 0; 1354 do { 1355 n = 10 * n + to_digit(ch); 1356 ch = *fmt++; 1357 } while (is_digit(ch)); 1358 if (ch == '$') { 1359 nextarg = n; 1360 goto rflag; 1361 } 1362 width = n; 1363 goto reswitch; 1364 #ifdef FLOATING_POINT 1365 case 'L': 1366 flags |= LONGDBL; 1367 goto rflag; 1368 #endif 1369 case 'h': 1370 if (flags & SHORTINT) { 1371 flags &= ~SHORTINT; 1372 flags |= CHARINT; 1373 } else 1374 flags |= SHORTINT; 1375 goto rflag; 1376 case 'j': 1377 flags |= INTMAXT; 1378 goto rflag; 1379 case 'l': 1380 if (flags & LONGINT) { 1381 flags &= ~LONGINT; 1382 flags |= LLONGINT; 1383 } else 1384 flags |= LONGINT; 1385 goto rflag; 1386 case 'q': 1387 flags |= LLONGINT; /* not necessarily */ 1388 goto rflag; 1389 case 't': 1390 flags |= PTRDIFFT; 1391 goto rflag; 1392 case 'z': 1393 flags |= SIZET; 1394 goto rflag; 1395 case 'C': 1396 flags |= LONGINT; 1397 /*FALLTHROUGH*/ 1398 case 'c': 1399 if (flags & LONGINT) 1400 ADDTYPE(T_WINT); 1401 else 1402 ADDTYPE(T_INT); 1403 break; 1404 case 'D': 1405 flags |= LONGINT; 1406 /*FALLTHROUGH*/ 1407 case 'd': 1408 case 'i': 1409 ADDSARG(); 1410 break; 1411 #ifdef FLOATING_POINT 1412 #ifdef HEXFLOAT 1413 case 'a': 1414 case 'A': 1415 #endif 1416 case 'e': 1417 case 'E': 1418 case 'f': 1419 case 'g': 1420 case 'G': 1421 if (flags & LONGDBL) 1422 ADDTYPE(T_LONG_DOUBLE); 1423 else 1424 ADDTYPE(T_DOUBLE); 1425 break; 1426 #endif /* FLOATING_POINT */ 1427 case 'n': 1428 if (flags & INTMAXT) 1429 ADDTYPE(TP_INTMAXT); 1430 else if (flags & PTRDIFFT) 1431 ADDTYPE(TP_PTRDIFFT); 1432 else if (flags & SIZET) 1433 ADDTYPE(TP_SIZET); 1434 else if (flags & LLONGINT) 1435 ADDTYPE(TP_LLONG); 1436 else if (flags & LONGINT) 1437 ADDTYPE(TP_LONG); 1438 else if (flags & SHORTINT) 1439 ADDTYPE(TP_SHORT); 1440 else if (flags & CHARINT) 1441 ADDTYPE(TP_SCHAR); 1442 else 1443 ADDTYPE(TP_INT); 1444 continue; /* no output */ 1445 case 'O': 1446 flags |= LONGINT; 1447 /*FALLTHROUGH*/ 1448 case 'o': 1449 ADDUARG(); 1450 break; 1451 case 'p': 1452 ADDTYPE(TP_VOID); 1453 break; 1454 case 'S': 1455 flags |= LONGINT; 1456 /*FALLTHROUGH*/ 1457 case 's': 1458 if (flags & LONGINT) 1459 ADDTYPE(TP_WCHAR); 1460 else 1461 ADDTYPE(TP_CHAR); 1462 break; 1463 case 'U': 1464 flags |= LONGINT; 1465 /*FALLTHROUGH*/ 1466 case 'u': 1467 case 'X': 1468 case 'x': 1469 ADDUARG(); 1470 break; 1471 default: /* "%?" prints ?, unless ? is NUL */ 1472 if (ch == '\0') 1473 goto done; 1474 break; 1475 } 1476 } 1477 done: 1478 /* 1479 * Build the argument table. 1480 */ 1481 if (tablemax >= STATIC_ARG_TBL_SIZE) { 1482 *argtable = (union arg *) 1483 malloc (sizeof (union arg) * (tablemax + 1)); 1484 } 1485 1486 (*argtable) [0].intarg = 0; 1487 for (n = 1; n <= tablemax; n++) { 1488 switch (typetable [n]) { 1489 case T_UNUSED: /* whoops! */ 1490 (*argtable) [n].intarg = va_arg (ap, int); 1491 break; 1492 case TP_SCHAR: 1493 (*argtable) [n].pschararg = va_arg (ap, signed char *); 1494 break; 1495 case TP_SHORT: 1496 (*argtable) [n].pshortarg = va_arg (ap, short *); 1497 break; 1498 case T_INT: 1499 (*argtable) [n].intarg = va_arg (ap, int); 1500 break; 1501 case T_U_INT: 1502 (*argtable) [n].uintarg = va_arg (ap, unsigned int); 1503 break; 1504 case TP_INT: 1505 (*argtable) [n].pintarg = va_arg (ap, int *); 1506 break; 1507 case T_LONG: 1508 (*argtable) [n].longarg = va_arg (ap, long); 1509 break; 1510 case T_U_LONG: 1511 (*argtable) [n].ulongarg = va_arg (ap, unsigned long); 1512 break; 1513 case TP_LONG: 1514 (*argtable) [n].plongarg = va_arg (ap, long *); 1515 break; 1516 case T_LLONG: 1517 (*argtable) [n].longlongarg = va_arg (ap, long long); 1518 break; 1519 case T_U_LLONG: 1520 (*argtable) [n].ulonglongarg = va_arg (ap, unsigned long long); 1521 break; 1522 case TP_LLONG: 1523 (*argtable) [n].plonglongarg = va_arg (ap, long long *); 1524 break; 1525 case T_PTRDIFFT: 1526 (*argtable) [n].ptrdiffarg = va_arg (ap, ptrdiff_t); 1527 break; 1528 case TP_PTRDIFFT: 1529 (*argtable) [n].pptrdiffarg = va_arg (ap, ptrdiff_t *); 1530 break; 1531 case T_SIZET: 1532 (*argtable) [n].sizearg = va_arg (ap, size_t); 1533 break; 1534 case TP_SIZET: 1535 (*argtable) [n].psizearg = va_arg (ap, ssize_t *); 1536 break; 1537 case T_INTMAXT: 1538 (*argtable) [n].intmaxarg = va_arg (ap, intmax_t); 1539 break; 1540 case T_UINTMAXT: 1541 (*argtable) [n].uintmaxarg = va_arg (ap, uintmax_t); 1542 break; 1543 case TP_INTMAXT: 1544 (*argtable) [n].pintmaxarg = va_arg (ap, intmax_t *); 1545 break; 1546 #ifdef FLOATING_POINT 1547 case T_DOUBLE: 1548 (*argtable) [n].doublearg = va_arg (ap, double); 1549 break; 1550 case T_LONG_DOUBLE: 1551 (*argtable) [n].longdoublearg = va_arg (ap, long double); 1552 break; 1553 #endif 1554 case TP_CHAR: 1555 (*argtable) [n].pchararg = va_arg (ap, char *); 1556 break; 1557 case TP_VOID: 1558 (*argtable) [n].pvoidarg = va_arg (ap, void *); 1559 break; 1560 case T_WINT: 1561 (*argtable) [n].wintarg = va_arg (ap, wint_t); 1562 break; 1563 case TP_WCHAR: 1564 (*argtable) [n].pwchararg = va_arg (ap, wchar_t *); 1565 break; 1566 } 1567 } 1568 1569 if ((typetable != NULL) && (typetable != stattypetable)) 1570 free (typetable); 1571 } 1572 1573 /* 1574 * Increase the size of the type table. 1575 */ 1576 static void 1577 __grow_type_table (int nextarg, enum typeid **typetable, int *tablesize) 1578 { 1579 enum typeid *const oldtable = *typetable; 1580 const int oldsize = *tablesize; 1581 enum typeid *newtable; 1582 int newsize = oldsize * 2; 1583 1584 if (newsize < nextarg + 1) 1585 newsize = nextarg + 1; 1586 if (oldsize == STATIC_ARG_TBL_SIZE) { 1587 if ((newtable = malloc(newsize)) == NULL) 1588 abort(); /* XXX handle better */ 1589 bcopy(oldtable, newtable, oldsize); 1590 } else { 1591 if ((newtable = reallocf(oldtable, newsize)) == NULL) 1592 abort(); /* XXX handle better */ 1593 } 1594 memset(&newtable[oldsize], T_UNUSED, newsize - oldsize); 1595 1596 *typetable = newtable; 1597 *tablesize = newsize; 1598 } 1599 1600 1601 #ifdef FLOATING_POINT 1602 1603 static int 1604 exponent(wchar_t *p0, int exp, wchar_t fmtch) 1605 { 1606 wchar_t *p, *t; 1607 wchar_t expbuf[MAXEXPDIG]; 1608 1609 p = p0; 1610 *p++ = fmtch; 1611 if (exp < 0) { 1612 exp = -exp; 1613 *p++ = '-'; 1614 } 1615 else 1616 *p++ = '+'; 1617 t = expbuf + MAXEXPDIG; 1618 if (exp > 9) { 1619 do { 1620 *--t = to_char(exp % 10); 1621 } while ((exp /= 10) > 9); 1622 *--t = to_char(exp); 1623 for (; t < expbuf + MAXEXPDIG; *p++ = *t++); 1624 } 1625 else { 1626 /* 1627 * Exponents for decimal floating point conversions 1628 * (%[eEgG]) must be at least two characters long, 1629 * whereas exponents for hexadecimal conversions can 1630 * be only one character long. 1631 */ 1632 if (fmtch == 'e' || fmtch == 'E') 1633 *p++ = '0'; 1634 *p++ = to_char(exp); 1635 } 1636 return (p - p0); 1637 } 1638 #endif /* FLOATING_POINT */ 1639