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 1.58 2003/04/14 11:24:53 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. */ 74 #define FLOATING_POINT 75 76 union arg { 77 int intarg; 78 u_int uintarg; 79 long longarg; 80 u_long ulongarg; 81 long long longlongarg; 82 unsigned long long ulonglongarg; 83 ptrdiff_t ptrdiffarg; 84 size_t sizearg; 85 intmax_t intmaxarg; 86 uintmax_t uintmaxarg; 87 void *pvoidarg; 88 char *pchararg; 89 signed char *pschararg; 90 short *pshortarg; 91 int *pintarg; 92 long *plongarg; 93 long long *plonglongarg; 94 ptrdiff_t *pptrdiffarg; 95 size_t *psizearg; 96 intmax_t *pintmaxarg; 97 #ifdef FLOATING_POINT 98 double doublearg; 99 long double longdoublearg; 100 #endif 101 wint_t wintarg; 102 wchar_t *pwchararg; 103 }; 104 105 /* 106 * Type ids for argument type table. 107 */ 108 enum typeid { 109 T_UNUSED, TP_SHORT, T_INT, T_U_INT, TP_INT, 110 T_LONG, T_U_LONG, TP_LONG, T_LLONG, T_U_LLONG, TP_LLONG, 111 T_PTRDIFFT, TP_PTRDIFFT, T_SIZET, TP_SIZET, 112 T_INTMAXT, T_UINTMAXT, TP_INTMAXT, TP_VOID, TP_CHAR, TP_SCHAR, 113 T_DOUBLE, T_LONG_DOUBLE, T_WINT, TP_WCHAR 114 }; 115 116 static int __sbprintf(FILE *, const wchar_t *, va_list); 117 static wint_t __xfputwc(wchar_t, FILE *); 118 static wchar_t *__ujtoa(uintmax_t, wchar_t *, int, int, const wchar_t *, int, 119 char, const char *); 120 static wchar_t *__ultoa(u_long, wchar_t *, int, int, const wchar_t *, int, 121 char, const char *); 122 static wchar_t *__mbsconv(char *, int); 123 static void __find_arguments(const wchar_t *, va_list, union arg **); 124 static void __grow_type_table(int, enum typeid **, int *); 125 126 /* 127 * Helper function for `fprintf to unbuffered unix file': creates a 128 * temporary buffer. We only work on write-only files; this avoids 129 * worries about ungetc buffers and so forth. 130 */ 131 static int 132 __sbprintf(FILE *fp, const wchar_t *fmt, va_list ap) 133 { 134 int ret; 135 FILE fake; 136 unsigned char buf[BUFSIZ]; 137 138 /* copy the important variables */ 139 fake._flags = fp->_flags & ~__SNBF; 140 fake._file = fp->_file; 141 fake._cookie = fp->_cookie; 142 fake._write = fp->_write; 143 fake._extra = fp->_extra; 144 145 /* set up the buffer */ 146 fake._bf._base = fake._p = buf; 147 fake._bf._size = fake._w = sizeof(buf); 148 fake._lbfsize = 0; /* not actually used, but Just In Case */ 149 150 /* do the work, then copy any error status */ 151 ret = __vfwprintf(&fake, fmt, ap); 152 if (ret >= 0 && __fflush(&fake)) 153 ret = WEOF; 154 if (fake._flags & __SERR) 155 fp->_flags |= __SERR; 156 return (ret); 157 } 158 159 /* 160 * Like __fputwc, but handles fake string (__SSTR) files properly. 161 * File must already be locked. 162 */ 163 static wint_t 164 __xfputwc(wchar_t wc, FILE *fp) 165 { 166 char buf[MB_LEN_MAX]; 167 struct __suio uio; 168 struct __siov iov; 169 size_t i, len; 170 int ret; 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 wchar_t *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 wchar_t *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 wchar_t *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 wchar_t xdigs_lower[16] = L"0123456789abcdef"; 553 static const wchar_t xdigs_upper[16] = L"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 /* 838 * XXX We don't actually have a conversion 839 * XXX routine for this yet. 840 */ 841 if (flags & LONGDBL) { 842 fparg.ldbl = (double)GETARG(long double); 843 dtoaresult = 844 __hldtoa(fparg.ldbl, xdigs, prec, 845 &expt, &signflag, &dtoaend); 846 } else { 847 fparg.dbl = GETARG(double); 848 dtoaresult = 849 __hdtoa(fparg.dbl, xdigs, prec, 850 &expt, &signflag, &dtoaend); 851 } 852 if (convbuf != NULL) 853 free(convbuf); 854 cp = convbuf = __mbsconv(dtoaresult, -1); 855 freedtoa(dtoaresult); 856 goto fp_begin; 857 #endif 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 if (signflag) 897 sign = '-'; 898 if (expt == INT_MAX) { /* inf or nan */ 899 if (*cp == 'N') { 900 cp = (ch >= 'a') ? L"nan" : L"NAN"; 901 sign = '\0'; 902 } else 903 cp = (ch >= 'a') ? L"inf" : L"INF"; 904 size = 3; 905 break; 906 } 907 flags |= FPT; 908 if (ch == 'g' || ch == 'G') { 909 if (expt > -4 && expt <= prec) { 910 /* Make %[gG] smell like %[fF] */ 911 expchar = '\0'; 912 if (flags & ALT) 913 prec -= expt; 914 else 915 prec = ndig - expt; 916 if (prec < 0) 917 prec = 0; 918 } else { 919 /* 920 * Make %[gG] smell like %[eE], but 921 * trim trailing zeroes if no # flag. 922 */ 923 if (!(flags & ALT)) 924 prec = ndig; 925 } 926 } 927 if (expchar) { 928 expsize = exponent(expstr, expt - 1, expchar); 929 size = expsize + prec; 930 if (prec > 1 || flags & ALT) 931 ++size; 932 } else { 933 /* space for digits before decimal point */ 934 if (expt > 0) 935 size = expt; 936 else /* "0" */ 937 size = 1; 938 /* space for decimal pt and following digits */ 939 if (prec || flags & ALT) 940 size += prec + 1; 941 if (grouping && expt > 0) { 942 /* space for thousands' grouping */ 943 nseps = nrepeats = 0; 944 lead = expt; 945 while (*grouping != CHAR_MAX) { 946 if (lead <= *grouping) 947 break; 948 lead -= *grouping; 949 if (*(grouping+1)) { 950 nseps++; 951 grouping++; 952 } else 953 nrepeats++; 954 } 955 size += nseps + nrepeats; 956 } else 957 lead = expt; 958 } 959 break; 960 #endif /* FLOATING_POINT */ 961 case 'n': 962 /* 963 * Assignment-like behavior is specified if the 964 * value overflows or is otherwise unrepresentable. 965 * C99 says to use `signed char' for %hhn conversions. 966 */ 967 if (flags & LLONGINT) 968 *GETARG(long long *) = ret; 969 else if (flags & SIZET) 970 *GETARG(ssize_t *) = (ssize_t)ret; 971 else if (flags & PTRDIFFT) 972 *GETARG(ptrdiff_t *) = ret; 973 else if (flags & INTMAXT) 974 *GETARG(intmax_t *) = ret; 975 else if (flags & LONGINT) 976 *GETARG(long *) = ret; 977 else if (flags & SHORTINT) 978 *GETARG(short *) = ret; 979 else if (flags & CHARINT) 980 *GETARG(signed char *) = ret; 981 else 982 *GETARG(int *) = ret; 983 continue; /* no output */ 984 case 'O': 985 flags |= LONGINT; 986 /*FALLTHROUGH*/ 987 case 'o': 988 if (flags & INTMAX_SIZE) 989 ujval = UJARG(); 990 else 991 ulval = UARG(); 992 base = 8; 993 goto nosign; 994 case 'p': 995 /*- 996 * ``The argument shall be a pointer to void. The 997 * value of the pointer is converted to a sequence 998 * of printable characters, in an implementation- 999 * defined manner.'' 1000 * -- ANSI X3J11 1001 */ 1002 ujval = (uintmax_t)(uintptr_t)GETARG(void *); 1003 base = 16; 1004 xdigs = xdigs_lower; 1005 flags = flags | INTMAXT; 1006 ox[1] = 'x'; 1007 goto nosign; 1008 case 'S': 1009 flags |= LONGINT; 1010 /*FALLTHROUGH*/ 1011 case 's': 1012 if (flags & LONGINT) { 1013 if ((cp = GETARG(wchar_t *)) == NULL) 1014 cp = L"(null)"; 1015 } else { 1016 char *mbp; 1017 1018 if (convbuf != NULL) 1019 free(convbuf); 1020 if ((mbp = GETARG(char *)) == NULL) 1021 cp = L"(null)"; 1022 else { 1023 convbuf = __mbsconv(mbp, prec); 1024 if (convbuf == NULL) { 1025 fp->_flags |= __SERR; 1026 goto error; 1027 } 1028 cp = convbuf; 1029 } 1030 } 1031 1032 if (prec >= 0) { 1033 /* 1034 * can't use wcslen; can only look for the 1035 * NUL in the first `prec' characters, and 1036 * wcslen() will go further. 1037 */ 1038 wchar_t *p = wmemchr(cp, 0, (size_t)prec); 1039 1040 if (p != NULL) { 1041 size = p - cp; 1042 if (size > prec) 1043 size = prec; 1044 } else 1045 size = prec; 1046 } else 1047 size = wcslen(cp); 1048 sign = '\0'; 1049 break; 1050 case 'U': 1051 flags |= LONGINT; 1052 /*FALLTHROUGH*/ 1053 case 'u': 1054 if (flags & INTMAX_SIZE) 1055 ujval = UJARG(); 1056 else 1057 ulval = UARG(); 1058 base = 10; 1059 goto nosign; 1060 case 'X': 1061 xdigs = xdigs_upper; 1062 goto hex; 1063 case 'x': 1064 xdigs = xdigs_lower; 1065 hex: 1066 if (flags & INTMAX_SIZE) 1067 ujval = UJARG(); 1068 else 1069 ulval = UARG(); 1070 base = 16; 1071 /* leading 0x/X only if non-zero */ 1072 if (flags & ALT && 1073 (flags & INTMAX_SIZE ? ujval != 0 : ulval != 0)) 1074 ox[1] = ch; 1075 1076 flags &= ~GROUPING; 1077 /* unsigned conversions */ 1078 nosign: sign = '\0'; 1079 /*- 1080 * ``... diouXx conversions ... if a precision is 1081 * specified, the 0 flag will be ignored.'' 1082 * -- ANSI X3J11 1083 */ 1084 number: if ((dprec = prec) >= 0) 1085 flags &= ~ZEROPAD; 1086 1087 /*- 1088 * ``The result of converting a zero value with an 1089 * explicit precision of zero is no characters.'' 1090 * -- ANSI X3J11 1091 */ 1092 cp = buf + BUF; 1093 if (flags & INTMAX_SIZE) { 1094 if (ujval != 0 || prec != 0) 1095 cp = __ujtoa(ujval, cp, base, 1096 flags & ALT, xdigs, 1097 flags & GROUPING, thousands_sep, 1098 grouping); 1099 } else { 1100 if (ulval != 0 || prec != 0) 1101 cp = __ultoa(ulval, cp, base, 1102 flags & ALT, xdigs, 1103 flags & GROUPING, thousands_sep, 1104 grouping); 1105 } 1106 size = buf + BUF - cp; 1107 if (size > BUF) /* should never happen */ 1108 abort(); 1109 break; 1110 default: /* "%?" prints ?, unless ? is NUL */ 1111 if (ch == '\0') 1112 goto done; 1113 /* pretend it was %c with argument ch */ 1114 cp = buf; 1115 *cp = ch; 1116 size = 1; 1117 sign = '\0'; 1118 break; 1119 } 1120 1121 /* 1122 * All reasonable formats wind up here. At this point, `cp' 1123 * points to a string which (if not flags&LADJUST) should be 1124 * padded out to `width' places. If flags&ZEROPAD, it should 1125 * first be prefixed by any sign or other prefix; otherwise, 1126 * it should be blank padded before the prefix is emitted. 1127 * After any left-hand padding and prefixing, emit zeroes 1128 * required by a decimal [diouxX] precision, then print the 1129 * string proper, then emit zeroes required by any leftover 1130 * floating precision; finally, if LADJUST, pad with blanks. 1131 * 1132 * Compute actual size, so we know how much to pad. 1133 * size excludes decimal prec; realsz includes it. 1134 */ 1135 realsz = dprec > size ? dprec : size; 1136 if (sign) 1137 realsz++; 1138 else if (ox[1]) 1139 realsz += 2; 1140 1141 prsize = width > realsz ? width : realsz; 1142 if ((unsigned)ret + prsize > INT_MAX) { 1143 ret = EOF; 1144 goto error; 1145 } 1146 1147 /* right-adjusting blank padding */ 1148 if ((flags & (LADJUST|ZEROPAD)) == 0) 1149 PAD(width - realsz, blanks); 1150 1151 /* prefix */ 1152 if (sign) { 1153 PRINT(&sign, 1); 1154 } else if (ox[1]) { /* ox[1] is either x, X, or \0 */ 1155 ox[0] = '0'; 1156 PRINT(ox, 2); 1157 } 1158 1159 /* right-adjusting zero padding */ 1160 if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD) 1161 PAD(width - realsz, zeroes); 1162 1163 /* leading zeroes from decimal precision */ 1164 PAD(dprec - size, zeroes); 1165 1166 /* the string or number proper */ 1167 #ifdef FLOATING_POINT 1168 if ((flags & FPT) == 0) { 1169 PRINT(cp, size); 1170 } else { /* glue together f_p fragments */ 1171 if (!expchar) { /* %[fF] or sufficiently short %[gG] */ 1172 if (expt <= 0) { 1173 PRINT(zeroes, 1); 1174 if (prec || flags & ALT) 1175 PRINT(decimal_point, 1); 1176 PAD(-expt, zeroes); 1177 /* already handled initial 0's */ 1178 prec += expt; 1179 } else { 1180 PRINTANDPAD(cp, convbuf + ndig, lead, zeroes); 1181 cp += lead; 1182 if (grouping) { 1183 while (nseps>0 || nrepeats>0) { 1184 if (nrepeats > 0) 1185 nrepeats--; 1186 else { 1187 grouping--; 1188 nseps--; 1189 } 1190 PRINT(&thousands_sep, 1191 1); 1192 PRINTANDPAD(cp, 1193 convbuf + ndig, 1194 *grouping, zeroes); 1195 cp += *grouping; 1196 } 1197 if (cp > convbuf + ndig) 1198 cp = convbuf + ndig; 1199 } 1200 if (prec || flags & ALT) { 1201 buf[0] = *decimal_point; 1202 PRINT(buf, 1); 1203 } 1204 } 1205 PRINTANDPAD(cp, convbuf + ndig, prec, zeroes); 1206 } else { /* %[eE] or sufficiently long %[gG] */ 1207 if (prec > 1 || flags & ALT) { 1208 buf[0] = *cp++; 1209 buf[1] = *decimal_point; 1210 PRINT(buf, 2); 1211 PRINT(cp, ndig-1); 1212 PAD(prec - ndig, zeroes); 1213 } else /* XeYYY */ 1214 PRINT(cp, 1); 1215 PRINT(expstr, expsize); 1216 } 1217 } 1218 #else 1219 PRINT(cp, size); 1220 #endif 1221 /* left-adjusting padding (always blank) */ 1222 if (flags & LADJUST) 1223 PAD(width - realsz, blanks); 1224 1225 /* finally, adjust ret */ 1226 ret += prsize; 1227 } 1228 done: 1229 error: 1230 if (convbuf != NULL) 1231 free(convbuf); 1232 if (__sferror(fp)) 1233 ret = EOF; 1234 if ((argtable != NULL) && (argtable != statargtable)) 1235 free (argtable); 1236 return (ret); 1237 /* NOTREACHED */ 1238 } 1239 1240 /* 1241 * Find all arguments when a positional parameter is encountered. Returns a 1242 * table, indexed by argument number, of pointers to each arguments. The 1243 * initial argument table should be an array of STATIC_ARG_TBL_SIZE entries. 1244 * It will be replaces with a malloc-ed one if it overflows. 1245 */ 1246 static void 1247 __find_arguments (const wchar_t *fmt0, va_list ap, union arg **argtable) 1248 { 1249 wchar_t *fmt; /* format string */ 1250 wchar_t ch; /* character from fmt */ 1251 int n, n2; /* handy integer (short term usage) */ 1252 wchar_t *cp; /* handy char pointer (short term usage) */ 1253 int flags; /* flags as above */ 1254 int width; /* width from format (%8d), or 0 */ 1255 enum typeid *typetable; /* table of types */ 1256 enum typeid stattypetable [STATIC_ARG_TBL_SIZE]; 1257 int tablesize; /* current size of type table */ 1258 int tablemax; /* largest used index in table */ 1259 int nextarg; /* 1-based argument index */ 1260 1261 /* 1262 * Add an argument type to the table, expanding if necessary. 1263 */ 1264 #define ADDTYPE(type) \ 1265 ((nextarg >= tablesize) ? \ 1266 __grow_type_table(nextarg, &typetable, &tablesize) : 0, \ 1267 (nextarg > tablemax) ? tablemax = nextarg : 0, \ 1268 typetable[nextarg++] = type) 1269 1270 #define ADDSARG() \ 1271 ((flags&INTMAXT) ? ADDTYPE(T_INTMAXT) : \ 1272 ((flags&SIZET) ? ADDTYPE(T_SIZET) : \ 1273 ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \ 1274 ((flags&LLONGINT) ? ADDTYPE(T_LLONG) : \ 1275 ((flags&LONGINT) ? ADDTYPE(T_LONG) : ADDTYPE(T_INT)))))) 1276 1277 #define ADDUARG() \ 1278 ((flags&INTMAXT) ? ADDTYPE(T_UINTMAXT) : \ 1279 ((flags&SIZET) ? ADDTYPE(T_SIZET) : \ 1280 ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \ 1281 ((flags&LLONGINT) ? ADDTYPE(T_U_LLONG) : \ 1282 ((flags&LONGINT) ? ADDTYPE(T_U_LONG) : ADDTYPE(T_U_INT)))))) 1283 1284 /* 1285 * Add * arguments to the type array. 1286 */ 1287 #define ADDASTER() \ 1288 n2 = 0; \ 1289 cp = fmt; \ 1290 while (is_digit(*cp)) { \ 1291 n2 = 10 * n2 + to_digit(*cp); \ 1292 cp++; \ 1293 } \ 1294 if (*cp == '$') { \ 1295 int hold = nextarg; \ 1296 nextarg = n2; \ 1297 ADDTYPE (T_INT); \ 1298 nextarg = hold; \ 1299 fmt = ++cp; \ 1300 } else { \ 1301 ADDTYPE (T_INT); \ 1302 } 1303 fmt = (wchar_t *)fmt0; 1304 typetable = stattypetable; 1305 tablesize = STATIC_ARG_TBL_SIZE; 1306 tablemax = 0; 1307 nextarg = 1; 1308 memset (typetable, T_UNUSED, STATIC_ARG_TBL_SIZE); 1309 1310 /* 1311 * Scan the format for conversions (`%' character). 1312 */ 1313 for (;;) { 1314 for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++) 1315 /* void */; 1316 if (ch == '\0') 1317 goto done; 1318 fmt++; /* skip over '%' */ 1319 1320 flags = 0; 1321 width = 0; 1322 1323 rflag: ch = *fmt++; 1324 reswitch: switch (ch) { 1325 case ' ': 1326 case '#': 1327 goto rflag; 1328 case '*': 1329 ADDASTER (); 1330 goto rflag; 1331 case '-': 1332 case '+': 1333 case '\'': 1334 goto rflag; 1335 case '.': 1336 if ((ch = *fmt++) == '*') { 1337 ADDASTER (); 1338 goto rflag; 1339 } 1340 while (is_digit(ch)) { 1341 ch = *fmt++; 1342 } 1343 goto reswitch; 1344 case '0': 1345 goto rflag; 1346 case '1': case '2': case '3': case '4': 1347 case '5': case '6': case '7': case '8': case '9': 1348 n = 0; 1349 do { 1350 n = 10 * n + to_digit(ch); 1351 ch = *fmt++; 1352 } while (is_digit(ch)); 1353 if (ch == '$') { 1354 nextarg = n; 1355 goto rflag; 1356 } 1357 width = n; 1358 goto reswitch; 1359 #ifdef FLOATING_POINT 1360 case 'L': 1361 flags |= LONGDBL; 1362 goto rflag; 1363 #endif 1364 case 'h': 1365 if (flags & SHORTINT) { 1366 flags &= ~SHORTINT; 1367 flags |= CHARINT; 1368 } else 1369 flags |= SHORTINT; 1370 goto rflag; 1371 case 'j': 1372 flags |= INTMAXT; 1373 goto rflag; 1374 case 'l': 1375 if (flags & LONGINT) { 1376 flags &= ~LONGINT; 1377 flags |= LLONGINT; 1378 } else 1379 flags |= LONGINT; 1380 goto rflag; 1381 case 'q': 1382 flags |= LLONGINT; /* not necessarily */ 1383 goto rflag; 1384 case 't': 1385 flags |= PTRDIFFT; 1386 goto rflag; 1387 case 'z': 1388 flags |= SIZET; 1389 goto rflag; 1390 case 'C': 1391 flags |= LONGINT; 1392 /*FALLTHROUGH*/ 1393 case 'c': 1394 if (flags & LONGINT) 1395 ADDTYPE(T_WINT); 1396 else 1397 ADDTYPE(T_INT); 1398 break; 1399 case 'D': 1400 flags |= LONGINT; 1401 /*FALLTHROUGH*/ 1402 case 'd': 1403 case 'i': 1404 ADDSARG(); 1405 break; 1406 #ifdef FLOATING_POINT 1407 #ifdef HEXFLOAT 1408 case 'a': 1409 case 'A': 1410 #endif 1411 case 'e': 1412 case 'E': 1413 case 'f': 1414 case 'g': 1415 case 'G': 1416 if (flags & LONGDBL) 1417 ADDTYPE(T_LONG_DOUBLE); 1418 else 1419 ADDTYPE(T_DOUBLE); 1420 break; 1421 #endif /* FLOATING_POINT */ 1422 case 'n': 1423 if (flags & INTMAXT) 1424 ADDTYPE(TP_INTMAXT); 1425 else if (flags & PTRDIFFT) 1426 ADDTYPE(TP_PTRDIFFT); 1427 else if (flags & SIZET) 1428 ADDTYPE(TP_SIZET); 1429 else if (flags & LLONGINT) 1430 ADDTYPE(TP_LLONG); 1431 else if (flags & LONGINT) 1432 ADDTYPE(TP_LONG); 1433 else if (flags & SHORTINT) 1434 ADDTYPE(TP_SHORT); 1435 else if (flags & CHARINT) 1436 ADDTYPE(TP_SCHAR); 1437 else 1438 ADDTYPE(TP_INT); 1439 continue; /* no output */ 1440 case 'O': 1441 flags |= LONGINT; 1442 /*FALLTHROUGH*/ 1443 case 'o': 1444 ADDUARG(); 1445 break; 1446 case 'p': 1447 ADDTYPE(TP_VOID); 1448 break; 1449 case 'S': 1450 flags |= LONGINT; 1451 /*FALLTHROUGH*/ 1452 case 's': 1453 if (flags & LONGINT) 1454 ADDTYPE(TP_WCHAR); 1455 else 1456 ADDTYPE(TP_CHAR); 1457 break; 1458 case 'U': 1459 flags |= LONGINT; 1460 /*FALLTHROUGH*/ 1461 case 'u': 1462 case 'X': 1463 case 'x': 1464 ADDUARG(); 1465 break; 1466 default: /* "%?" prints ?, unless ? is NUL */ 1467 if (ch == '\0') 1468 goto done; 1469 break; 1470 } 1471 } 1472 done: 1473 /* 1474 * Build the argument table. 1475 */ 1476 if (tablemax >= STATIC_ARG_TBL_SIZE) { 1477 *argtable = (union arg *) 1478 malloc (sizeof (union arg) * (tablemax + 1)); 1479 } 1480 1481 (*argtable) [0].intarg = 0; 1482 for (n = 1; n <= tablemax; n++) { 1483 switch (typetable [n]) { 1484 case T_UNUSED: /* whoops! */ 1485 (*argtable) [n].intarg = va_arg (ap, int); 1486 break; 1487 case TP_SCHAR: 1488 (*argtable) [n].pschararg = va_arg (ap, signed char *); 1489 break; 1490 case TP_SHORT: 1491 (*argtable) [n].pshortarg = va_arg (ap, short *); 1492 break; 1493 case T_INT: 1494 (*argtable) [n].intarg = va_arg (ap, int); 1495 break; 1496 case T_U_INT: 1497 (*argtable) [n].uintarg = va_arg (ap, unsigned int); 1498 break; 1499 case TP_INT: 1500 (*argtable) [n].pintarg = va_arg (ap, int *); 1501 break; 1502 case T_LONG: 1503 (*argtable) [n].longarg = va_arg (ap, long); 1504 break; 1505 case T_U_LONG: 1506 (*argtable) [n].ulongarg = va_arg (ap, unsigned long); 1507 break; 1508 case TP_LONG: 1509 (*argtable) [n].plongarg = va_arg (ap, long *); 1510 break; 1511 case T_LLONG: 1512 (*argtable) [n].longlongarg = va_arg (ap, long long); 1513 break; 1514 case T_U_LLONG: 1515 (*argtable) [n].ulonglongarg = va_arg (ap, unsigned long long); 1516 break; 1517 case TP_LLONG: 1518 (*argtable) [n].plonglongarg = va_arg (ap, long long *); 1519 break; 1520 case T_PTRDIFFT: 1521 (*argtable) [n].ptrdiffarg = va_arg (ap, ptrdiff_t); 1522 break; 1523 case TP_PTRDIFFT: 1524 (*argtable) [n].pptrdiffarg = va_arg (ap, ptrdiff_t *); 1525 break; 1526 case T_SIZET: 1527 (*argtable) [n].sizearg = va_arg (ap, size_t); 1528 break; 1529 case TP_SIZET: 1530 (*argtable) [n].psizearg = va_arg (ap, ssize_t *); 1531 break; 1532 case T_INTMAXT: 1533 (*argtable) [n].intmaxarg = va_arg (ap, intmax_t); 1534 break; 1535 case T_UINTMAXT: 1536 (*argtable) [n].uintmaxarg = va_arg (ap, uintmax_t); 1537 break; 1538 case TP_INTMAXT: 1539 (*argtable) [n].pintmaxarg = va_arg (ap, intmax_t *); 1540 break; 1541 #ifdef FLOATING_POINT 1542 case T_DOUBLE: 1543 (*argtable) [n].doublearg = va_arg (ap, double); 1544 break; 1545 case T_LONG_DOUBLE: 1546 (*argtable) [n].longdoublearg = va_arg (ap, long double); 1547 break; 1548 #endif 1549 case TP_CHAR: 1550 (*argtable) [n].pchararg = va_arg (ap, char *); 1551 break; 1552 case TP_VOID: 1553 (*argtable) [n].pvoidarg = va_arg (ap, void *); 1554 break; 1555 case T_WINT: 1556 (*argtable) [n].wintarg = va_arg (ap, wint_t); 1557 break; 1558 case TP_WCHAR: 1559 (*argtable) [n].pwchararg = va_arg (ap, wchar_t *); 1560 break; 1561 } 1562 } 1563 1564 if ((typetable != NULL) && (typetable != stattypetable)) 1565 free (typetable); 1566 } 1567 1568 /* 1569 * Increase the size of the type table. 1570 */ 1571 static void 1572 __grow_type_table (int nextarg, enum typeid **typetable, int *tablesize) 1573 { 1574 enum typeid *const oldtable = *typetable; 1575 const int oldsize = *tablesize; 1576 enum typeid *newtable; 1577 int newsize = oldsize * 2; 1578 1579 if (newsize < nextarg + 1) 1580 newsize = nextarg + 1; 1581 if (oldsize == STATIC_ARG_TBL_SIZE) { 1582 if ((newtable = malloc(newsize)) == NULL) 1583 abort(); /* XXX handle better */ 1584 bcopy(oldtable, newtable, oldsize); 1585 } else { 1586 if ((newtable = reallocf(oldtable, newsize)) == NULL) 1587 abort(); /* XXX handle better */ 1588 } 1589 memset(&newtable[oldsize], T_UNUSED, newsize - oldsize); 1590 1591 *typetable = newtable; 1592 *tablesize = newsize; 1593 } 1594 1595 1596 #ifdef FLOATING_POINT 1597 1598 static int 1599 exponent(wchar_t *p0, int exp, wchar_t fmtch) 1600 { 1601 wchar_t *p, *t; 1602 wchar_t expbuf[MAXEXPDIG]; 1603 1604 p = p0; 1605 *p++ = fmtch; 1606 if (exp < 0) { 1607 exp = -exp; 1608 *p++ = '-'; 1609 } 1610 else 1611 *p++ = '+'; 1612 t = expbuf + MAXEXPDIG; 1613 if (exp > 9) { 1614 do { 1615 *--t = to_char(exp % 10); 1616 } while ((exp /= 10) > 9); 1617 *--t = to_char(exp); 1618 for (; t < expbuf + MAXEXPDIG; *p++ = *t++); 1619 } 1620 else { 1621 /* 1622 * Exponents for decimal floating point conversions 1623 * (%[eEgG]) must be at least two characters long, 1624 * whereas exponents for hexadecimal conversions can 1625 * be only one character long. 1626 */ 1627 if (fmtch == 'e' || fmtch == 'E') 1628 *p++ = '0'; 1629 *p++ = to_char(exp); 1630 } 1631 return (p - p0); 1632 } 1633 #endif /* FLOATING_POINT */ 1634