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 1.57 2003/04/07 03:17:39 ache 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 wchar_t *__ujtoa(uintmax_t, wchar_t *, int, int, const wchar_t *, int, 118 char, const char *); 119 static wchar_t *__ultoa(u_long, wchar_t *, int, int, const wchar_t *, int, 120 char, const char *); 121 static wchar_t *__mbsconv(char *, int); 122 static void __find_arguments(const wchar_t *, va_list, union arg **); 123 static void __grow_type_table(int, enum typeid **, int *); 124 125 /* 126 * Helper function for `fprintf to unbuffered unix file': creates a 127 * temporary buffer. We only work on write-only files; this avoids 128 * worries about ungetc buffers and so forth. 129 */ 130 static int 131 __sbprintf(FILE *fp, const wchar_t *fmt, va_list ap) 132 { 133 int ret; 134 FILE fake; 135 unsigned char buf[BUFSIZ]; 136 137 /* copy the important variables */ 138 fake._flags = fp->_flags & ~__SNBF; 139 fake._file = fp->_file; 140 fake._cookie = fp->_cookie; 141 fake._write = fp->_write; 142 fake._extra = fp->_extra; 143 144 /* set up the buffer */ 145 fake._bf._base = fake._p = buf; 146 fake._bf._size = fake._w = sizeof(buf); 147 fake._lbfsize = 0; /* not actually used, but Just In Case */ 148 149 /* do the work, then copy any error status */ 150 ret = __vfwprintf(&fake, fmt, ap); 151 if (ret >= 0 && __fflush(&fake)) 152 ret = WEOF; 153 if (fake._flags & __SERR) 154 fp->_flags |= __SERR; 155 return (ret); 156 } 157 158 /* 159 * Macros for converting digits to letters and vice versa 160 */ 161 #define to_digit(c) ((c) - '0') 162 #define is_digit(c) ((unsigned)to_digit(c) <= 9) 163 #define to_char(n) ((n) + '0') 164 165 /* 166 * Convert an unsigned long to ASCII for printf purposes, returning 167 * a pointer to the first character of the string representation. 168 * Octal numbers can be forced to have a leading zero; hex numbers 169 * use the given digits. 170 */ 171 static wchar_t * 172 __ultoa(u_long val, wchar_t *endp, int base, int octzero, const wchar_t *xdigs, 173 int needgrp, char thousep, const char *grp) 174 { 175 wchar_t *cp = endp; 176 long sval; 177 int ndig; 178 179 /* 180 * Handle the three cases separately, in the hope of getting 181 * better/faster code. 182 */ 183 switch (base) { 184 case 10: 185 if (val < 10) { /* many numbers are 1 digit */ 186 *--cp = to_char(val); 187 return (cp); 188 } 189 ndig = 0; 190 /* 191 * On many machines, unsigned arithmetic is harder than 192 * signed arithmetic, so we do at most one unsigned mod and 193 * divide; this is sufficient to reduce the range of 194 * the incoming value to where signed arithmetic works. 195 */ 196 if (val > LONG_MAX) { 197 *--cp = to_char(val % 10); 198 ndig++; 199 sval = val / 10; 200 } else 201 sval = val; 202 do { 203 *--cp = to_char(sval % 10); 204 ndig++; 205 /* 206 * If (*grp == CHAR_MAX) then no more grouping 207 * should be performed. 208 */ 209 if (needgrp && ndig == *grp && *grp != CHAR_MAX 210 && sval > 9) { 211 *--cp = thousep; 212 ndig = 0; 213 /* 214 * If (*(grp+1) == '\0') then we have to 215 * use *grp character (last grouping rule) 216 * for all next cases 217 */ 218 if (*(grp+1) != '\0') 219 grp++; 220 } 221 sval /= 10; 222 } while (sval != 0); 223 break; 224 225 case 8: 226 do { 227 *--cp = to_char(val & 7); 228 val >>= 3; 229 } while (val); 230 if (octzero && *cp != '0') 231 *--cp = '0'; 232 break; 233 234 case 16: 235 do { 236 *--cp = xdigs[val & 15]; 237 val >>= 4; 238 } while (val); 239 break; 240 241 default: /* oops */ 242 abort(); 243 } 244 return (cp); 245 } 246 247 /* Identical to __ultoa, but for intmax_t. */ 248 static wchar_t * 249 __ujtoa(uintmax_t val, wchar_t *endp, int base, int octzero, 250 const wchar_t *xdigs, int needgrp, char thousep, const char *grp) 251 { 252 wchar_t *cp = endp; 253 intmax_t sval; 254 int ndig; 255 256 /* quick test for small values; __ultoa is typically much faster */ 257 /* (perhaps instead we should run until small, then call __ultoa?) */ 258 if (val <= ULONG_MAX) 259 return (__ultoa((u_long)val, endp, base, octzero, xdigs, 260 needgrp, thousep, grp)); 261 switch (base) { 262 case 10: 263 if (val < 10) { 264 *--cp = to_char(val % 10); 265 return (cp); 266 } 267 ndig = 0; 268 if (val > INTMAX_MAX) { 269 *--cp = to_char(val % 10); 270 ndig++; 271 sval = val / 10; 272 } else 273 sval = val; 274 do { 275 *--cp = to_char(sval % 10); 276 ndig++; 277 /* 278 * If (*grp == CHAR_MAX) then no more grouping 279 * should be performed. 280 */ 281 if (needgrp && *grp != CHAR_MAX && ndig == *grp 282 && sval > 9) { 283 *--cp = thousep; 284 ndig = 0; 285 /* 286 * If (*(grp+1) == '\0') then we have to 287 * use *grp character (last grouping rule) 288 * for all next cases 289 */ 290 if (*(grp+1) != '\0') 291 grp++; 292 } 293 sval /= 10; 294 } while (sval != 0); 295 break; 296 297 case 8: 298 do { 299 *--cp = to_char(val & 7); 300 val >>= 3; 301 } while (val); 302 if (octzero && *cp != '0') 303 *--cp = '0'; 304 break; 305 306 case 16: 307 do { 308 *--cp = xdigs[val & 15]; 309 val >>= 4; 310 } while (val); 311 break; 312 313 default: 314 abort(); 315 } 316 return (cp); 317 } 318 319 /* 320 * Convert a multibyte character string argument for the %s format to a wide 321 * string representation. ``prec'' specifies the maximum number of bytes 322 * to output. If ``prec'' is greater than or equal to zero, we can't assume 323 * that the multibyte char. string ends in a null character. 324 */ 325 static wchar_t * 326 __mbsconv(char *mbsarg, int prec) 327 { 328 wchar_t *convbuf, *wcp; 329 const char *p; 330 size_t insize, nchars, nconv; 331 mbstate_t mbs; 332 333 if (mbsarg == NULL) 334 return (NULL); 335 336 /* 337 * Supplied argument is a multibyte string; convert it to wide 338 * characters first. 339 */ 340 if (prec >= 0) { 341 /* 342 * String is not guaranteed to be NUL-terminated. Find the 343 * number of characters to print. 344 */ 345 memset(&mbs, 0, sizeof(mbs)); 346 p = mbsarg; 347 insize = nchars = 0; 348 while (nchars != (size_t)prec) { 349 nconv = mbrlen(p, MB_CUR_MAX, &mbs); 350 if (nconv == 0 || nconv == (size_t)-1 || 351 nconv == (size_t)-2) 352 break; 353 p += nconv; 354 nchars++; 355 insize += nconv; 356 } 357 if (nconv == (size_t)-1 || nconv == (size_t)-2) 358 return (NULL); 359 } else 360 insize = strlen(mbsarg); 361 362 /* 363 * Allocate buffer for the result and perform the conversion, 364 * converting at most `size' bytes of the input multibyte string to 365 * wide characters for printing. 366 */ 367 convbuf = malloc((insize + 1) * sizeof(*convbuf)); 368 if (convbuf == NULL) 369 return (NULL); 370 wcp = convbuf; 371 p = mbsarg; 372 memset(&mbs, 0, sizeof(mbs)); 373 while (insize != 0) { 374 nconv = mbrtowc(wcp, p, insize, &mbs); 375 if (nconv == 0 || nconv == (size_t)-1 || nconv == (size_t)-2) 376 break; 377 wcp++; 378 p += nconv; 379 insize -= nconv; 380 } 381 if (nconv == (size_t)-1 || nconv == (size_t)-2) { 382 free(convbuf); 383 return (NULL); 384 } 385 *wcp = L'\0'; 386 387 return (convbuf); 388 } 389 390 /* 391 * MT-safe version 392 */ 393 int 394 vfwprintf(FILE * __restrict fp, const wchar_t * __restrict fmt0, va_list ap) 395 396 { 397 int ret; 398 399 FLOCKFILE(fp); 400 ret = __vfwprintf(fp, fmt0, ap); 401 FUNLOCKFILE(fp); 402 return (ret); 403 } 404 405 #ifdef FLOATING_POINT 406 407 #define dtoa __dtoa 408 #define freedtoa __freedtoa 409 410 #include <float.h> 411 #include <math.h> 412 #include "floatio.h" 413 #include "gdtoa.h" 414 415 #define DEFPREC 6 416 417 static int exponent(wchar_t *, int, wchar_t); 418 419 #endif /* FLOATING_POINT */ 420 421 /* 422 * The size of the buffer we use as scratch space for integer 423 * conversions, among other things. Technically, we would need the 424 * most space for base 10 conversions with thousands' grouping 425 * characters between each pair of digits. 100 bytes is a 426 * conservative overestimate even for a 128-bit uintmax_t. 427 */ 428 #define BUF 100 429 430 #define STATIC_ARG_TBL_SIZE 8 /* Size of static argument table. */ 431 432 /* 433 * Flags used during conversion. 434 */ 435 #define ALT 0x001 /* alternate form */ 436 #define LADJUST 0x004 /* left adjustment */ 437 #define LONGDBL 0x008 /* long double */ 438 #define LONGINT 0x010 /* long integer */ 439 #define LLONGINT 0x020 /* long long integer */ 440 #define SHORTINT 0x040 /* short integer */ 441 #define ZEROPAD 0x080 /* zero (as opposed to blank) pad */ 442 #define FPT 0x100 /* Floating point number */ 443 #define GROUPING 0x200 /* use grouping ("'" flag) */ 444 /* C99 additional size modifiers: */ 445 #define SIZET 0x400 /* size_t */ 446 #define PTRDIFFT 0x800 /* ptrdiff_t */ 447 #define INTMAXT 0x1000 /* intmax_t */ 448 #define CHARINT 0x2000 /* print char using int format */ 449 450 /* 451 * Non-MT-safe version 452 */ 453 int 454 __vfwprintf(FILE *fp, const wchar_t *fmt0, va_list ap) 455 { 456 wchar_t *fmt; /* format string */ 457 wchar_t ch; /* character from fmt */ 458 int n, n2, n3; /* handy integer (short term usage) */ 459 wchar_t *cp; /* handy char pointer (short term usage) */ 460 int flags; /* flags as above */ 461 int ret; /* return value accumulator */ 462 int width; /* width from format (%8d), or 0 */ 463 int prec; /* precision from format; <0 for N/A */ 464 wchar_t sign; /* sign prefix (' ', '+', '-', or \0) */ 465 char thousands_sep; /* locale specific thousands separator */ 466 const char *grouping; /* locale specific numeric grouping rules */ 467 #ifdef FLOATING_POINT 468 /* 469 * We can decompose the printed representation of floating 470 * point numbers into several parts, some of which may be empty: 471 * 472 * [+|-| ] [0x|0X] MMM . NNN [e|E|p|P] [+|-] ZZ 473 * A B ---C--- D E F 474 * 475 * A: 'sign' holds this value if present; '\0' otherwise 476 * B: ox[1] holds the 'x' or 'X'; '\0' if not hexadecimal 477 * C: cp points to the string MMMNNN. Leading and trailing 478 * zeros are not in the string and must be added. 479 * D: expchar holds this character; '\0' if no exponent, e.g. %f 480 * F: at least two digits for decimal, at least one digit for hex 481 */ 482 char *decimal_point; /* locale specific decimal point */ 483 int signflag; /* true if float is negative */ 484 union { /* floating point arguments %[aAeEfFgG] */ 485 double dbl; 486 long double ldbl; 487 } fparg; 488 int expt; /* integer value of exponent */ 489 char expchar; /* exponent character: [eEpP\0] */ 490 char *dtoaend; /* pointer to end of converted digits */ 491 int expsize; /* character count for expstr */ 492 int lead; /* sig figs before decimal or group sep */ 493 int ndig; /* actual number of digits returned by dtoa */ 494 wchar_t expstr[MAXEXPDIG+2]; /* buffer for exponent string: e+ZZZ */ 495 char *dtoaresult; /* buffer allocated by dtoa */ 496 int nseps; /* number of group separators with ' */ 497 int nrepeats; /* number of repeats of the last group */ 498 #endif 499 u_long ulval; /* integer arguments %[diouxX] */ 500 uintmax_t ujval; /* %j, %ll, %q, %t, %z integers */ 501 int base; /* base for [diouxX] conversion */ 502 int dprec; /* a copy of prec if [diouxX], 0 otherwise */ 503 int realsz; /* field size expanded by dprec, sign, etc */ 504 int size; /* size of converted field or string */ 505 int prsize; /* max size of printed field */ 506 const wchar_t *xdigs; /* digits for [xX] conversion */ 507 wchar_t buf[BUF]; /* buffer with space for digits of uintmax_t */ 508 wchar_t ox[2]; /* space for 0x hex-prefix */ 509 union arg *argtable; /* args, built due to positional arg */ 510 union arg statargtable [STATIC_ARG_TBL_SIZE]; 511 int nextarg; /* 1-based argument index */ 512 va_list orgap; /* original argument pointer */ 513 wchar_t *convbuf; /* multibyte to wide conversion result */ 514 515 /* 516 * Choose PADSIZE to trade efficiency vs. size. If larger printf 517 * fields occur frequently, increase PADSIZE and make the initialisers 518 * below longer. 519 */ 520 #define PADSIZE 16 /* pad chunk size */ 521 static wchar_t blanks[PADSIZE] = 522 {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '}; 523 static wchar_t zeroes[PADSIZE] = 524 {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'}; 525 526 static const wchar_t xdigs_lower[16] = L"0123456789abcdef"; 527 static const wchar_t xdigs_upper[16] = L"0123456789ABCDEF"; 528 529 /* 530 * BEWARE, these `goto error' on error, PRINT uses `n2' and 531 * PAD uses `n'. 532 */ 533 #define PRINT(ptr, len) do { \ 534 for (n3 = 0; n3 < (len); n3++) \ 535 __fputwc((ptr)[n3], fp); \ 536 } while (0) 537 #define PAD(howmany, with) do { \ 538 if ((n = (howmany)) > 0) { \ 539 while (n > PADSIZE) { \ 540 PRINT(with, PADSIZE); \ 541 n -= PADSIZE; \ 542 } \ 543 PRINT(with, n); \ 544 } \ 545 } while (0) 546 #define PRINTANDPAD(p, ep, len, with) do { \ 547 n2 = (ep) - (p); \ 548 if (n2 > (len)) \ 549 n2 = (len); \ 550 if (n2 > 0) \ 551 PRINT((p), n2); \ 552 PAD((len) - (n2 > 0 ? n2 : 0), (with)); \ 553 } while(0) 554 555 /* 556 * Get the argument indexed by nextarg. If the argument table is 557 * built, use it to get the argument. If its not, get the next 558 * argument (and arguments must be gotten sequentially). 559 */ 560 #define GETARG(type) \ 561 ((argtable != NULL) ? *((type*)(&argtable[nextarg++])) : \ 562 (nextarg++, va_arg(ap, type))) 563 564 /* 565 * To extend shorts properly, we need both signed and unsigned 566 * argument extraction methods. 567 */ 568 #define SARG() \ 569 (flags&LONGINT ? GETARG(long) : \ 570 flags&SHORTINT ? (long)(short)GETARG(int) : \ 571 flags&CHARINT ? (long)(signed char)GETARG(int) : \ 572 (long)GETARG(int)) 573 #define UARG() \ 574 (flags&LONGINT ? GETARG(u_long) : \ 575 flags&SHORTINT ? (u_long)(u_short)GETARG(int) : \ 576 flags&CHARINT ? (u_long)(u_char)GETARG(int) : \ 577 (u_long)GETARG(u_int)) 578 #define INTMAX_SIZE (INTMAXT|SIZET|PTRDIFFT|LLONGINT) 579 #define SJARG() \ 580 (flags&INTMAXT ? GETARG(intmax_t) : \ 581 flags&SIZET ? (intmax_t)GETARG(size_t) : \ 582 flags&PTRDIFFT ? (intmax_t)GETARG(ptrdiff_t) : \ 583 (intmax_t)GETARG(long long)) 584 #define UJARG() \ 585 (flags&INTMAXT ? GETARG(uintmax_t) : \ 586 flags&SIZET ? (uintmax_t)GETARG(size_t) : \ 587 flags&PTRDIFFT ? (uintmax_t)GETARG(ptrdiff_t) : \ 588 (uintmax_t)GETARG(unsigned long long)) 589 590 /* 591 * Get * arguments, including the form *nn$. Preserve the nextarg 592 * that the argument can be gotten once the type is determined. 593 */ 594 #define GETASTER(val) \ 595 n2 = 0; \ 596 cp = fmt; \ 597 while (is_digit(*cp)) { \ 598 n2 = 10 * n2 + to_digit(*cp); \ 599 cp++; \ 600 } \ 601 if (*cp == '$') { \ 602 int hold = nextarg; \ 603 if (argtable == NULL) { \ 604 argtable = statargtable; \ 605 __find_arguments (fmt0, orgap, &argtable); \ 606 } \ 607 nextarg = n2; \ 608 val = GETARG (int); \ 609 nextarg = hold; \ 610 fmt = ++cp; \ 611 } else { \ 612 val = GETARG (int); \ 613 } 614 615 616 thousands_sep = '\0'; 617 grouping = NULL; 618 #ifdef FLOATING_POINT 619 decimal_point = localeconv()->decimal_point; 620 #endif 621 convbuf = NULL; 622 /* sorry, fwprintf(read_only_file, L"") returns WEOF, not 0 */ 623 if (cantwrite(fp)) 624 return (EOF); 625 626 /* optimise fprintf(stderr) (and other unbuffered Unix files) */ 627 if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) && 628 fp->_file >= 0) 629 return (__sbprintf(fp, fmt0, ap)); 630 631 fmt = (wchar_t *)fmt0; 632 argtable = NULL; 633 nextarg = 1; 634 va_copy(orgap, ap); 635 ret = 0; 636 637 /* 638 * Scan the format for conversions (`%' character). 639 */ 640 for (;;) { 641 for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++) 642 /* void */; 643 if ((n = fmt - cp) != 0) { 644 if ((unsigned)ret + n > INT_MAX) { 645 ret = EOF; 646 goto error; 647 } 648 PRINT(cp, n); 649 ret += n; 650 } 651 if (ch == '\0') 652 goto done; 653 fmt++; /* skip over '%' */ 654 655 flags = 0; 656 dprec = 0; 657 width = 0; 658 prec = -1; 659 sign = '\0'; 660 ox[1] = '\0'; 661 662 rflag: ch = *fmt++; 663 reswitch: switch (ch) { 664 case ' ': 665 /*- 666 * ``If the space and + flags both appear, the space 667 * flag will be ignored.'' 668 * -- ANSI X3J11 669 */ 670 if (!sign) 671 sign = ' '; 672 goto rflag; 673 case '#': 674 flags |= ALT; 675 goto rflag; 676 case '*': 677 /*- 678 * ``A negative field width argument is taken as a 679 * - flag followed by a positive field width.'' 680 * -- ANSI X3J11 681 * They don't exclude field widths read from args. 682 */ 683 GETASTER (width); 684 if (width >= 0) 685 goto rflag; 686 width = -width; 687 /* FALLTHROUGH */ 688 case '-': 689 flags |= LADJUST; 690 goto rflag; 691 case '+': 692 sign = '+'; 693 goto rflag; 694 case '\'': 695 flags |= GROUPING; 696 thousands_sep = *(localeconv()->thousands_sep); 697 grouping = localeconv()->grouping; 698 goto rflag; 699 case '.': 700 if ((ch = *fmt++) == '*') { 701 GETASTER (prec); 702 goto rflag; 703 } 704 prec = 0; 705 while (is_digit(ch)) { 706 prec = 10 * prec + to_digit(ch); 707 ch = *fmt++; 708 } 709 goto reswitch; 710 case '0': 711 /*- 712 * ``Note that 0 is taken as a flag, not as the 713 * beginning of a field width.'' 714 * -- ANSI X3J11 715 */ 716 flags |= ZEROPAD; 717 goto rflag; 718 case '1': case '2': case '3': case '4': 719 case '5': case '6': case '7': case '8': case '9': 720 n = 0; 721 do { 722 n = 10 * n + to_digit(ch); 723 ch = *fmt++; 724 } while (is_digit(ch)); 725 if (ch == '$') { 726 nextarg = n; 727 if (argtable == NULL) { 728 argtable = statargtable; 729 __find_arguments (fmt0, orgap, 730 &argtable); 731 } 732 goto rflag; 733 } 734 width = n; 735 goto reswitch; 736 #ifdef FLOATING_POINT 737 case 'L': 738 flags |= LONGDBL; 739 goto rflag; 740 #endif 741 case 'h': 742 if (flags & SHORTINT) { 743 flags &= ~SHORTINT; 744 flags |= CHARINT; 745 } else 746 flags |= SHORTINT; 747 goto rflag; 748 case 'j': 749 flags |= INTMAXT; 750 goto rflag; 751 case 'l': 752 if (flags & LONGINT) { 753 flags &= ~LONGINT; 754 flags |= LLONGINT; 755 } else 756 flags |= LONGINT; 757 goto rflag; 758 case 'q': 759 flags |= LLONGINT; /* not necessarily */ 760 goto rflag; 761 case 't': 762 flags |= PTRDIFFT; 763 goto rflag; 764 case 'z': 765 flags |= SIZET; 766 goto rflag; 767 case 'C': 768 flags |= LONGINT; 769 /*FALLTHROUGH*/ 770 case 'c': 771 if (flags & LONGINT) 772 *(cp = buf) = (wchar_t)GETARG(wint_t); 773 else 774 *(cp = buf) = (wchar_t)btowc(GETARG(int)); 775 size = 1; 776 sign = '\0'; 777 break; 778 case 'D': 779 flags |= LONGINT; 780 /*FALLTHROUGH*/ 781 case 'd': 782 case 'i': 783 if (flags & INTMAX_SIZE) { 784 ujval = SJARG(); 785 if ((intmax_t)ujval < 0) { 786 ujval = -ujval; 787 sign = '-'; 788 } 789 } else { 790 ulval = SARG(); 791 if ((long)ulval < 0) { 792 ulval = -ulval; 793 sign = '-'; 794 } 795 } 796 base = 10; 797 goto number; 798 #ifdef FLOATING_POINT 799 #ifdef HEXFLOAT 800 case 'a': 801 case 'A': 802 if (ch == 'a') { 803 ox[1] = 'x'; 804 xdigs = xdigs_lower; 805 expchar = 'p'; 806 } else { 807 ox[1] = 'X'; 808 xdigs = xdigs_upper; 809 expchar = 'P'; 810 } 811 /* 812 * XXX We don't actually have a conversion 813 * XXX routine for this yet. 814 */ 815 if (flags & LONGDBL) { 816 fparg.ldbl = (double)GETARG(long double); 817 dtoaresult = 818 __hldtoa(fparg.ldbl, xdigs, prec, 819 &expt, &signflag, &dtoaend); 820 } else { 821 fparg.dbl = GETARG(double); 822 dtoaresult = 823 __hdtoa(fparg.dbl, xdigs, prec, 824 &expt, &signflag, &dtoaend); 825 } 826 if (convbuf != NULL) 827 free(convbuf); 828 cp = convbuf = __mbsconv(dtoaresult, -1); 829 freedtoa(dtoaresult); 830 goto fp_begin; 831 #endif 832 case 'e': 833 case 'E': 834 expchar = ch; 835 if (prec < 0) /* account for digit before decpt */ 836 prec = DEFPREC + 1; 837 else 838 prec++; 839 goto fp_begin; 840 case 'f': 841 case 'F': 842 expchar = '\0'; 843 goto fp_begin; 844 case 'g': 845 case 'G': 846 expchar = ch - ('g' - 'e'); 847 if (prec == 0) 848 prec = 1; 849 fp_begin: 850 if (prec < 0) 851 prec = DEFPREC; 852 if (convbuf != NULL) 853 free(convbuf); 854 if (flags & LONGDBL) { 855 fparg.ldbl = GETARG(long double); 856 dtoaresult = 857 __ldtoa(&fparg.ldbl, expchar ? 2 : 3, prec, 858 &expt, &signflag, &dtoaend); 859 } else { 860 fparg.dbl = GETARG(double); 861 dtoaresult = 862 dtoa(fparg.dbl, expchar ? 2 : 3, prec, 863 &expt, &signflag, &dtoaend); 864 if (expt == 9999) 865 expt = INT_MAX; 866 } 867 ndig = dtoaend - dtoaresult; 868 cp = convbuf = __mbsconv(dtoaresult, -1); 869 freedtoa(dtoaresult); 870 if (signflag) 871 sign = '-'; 872 if (expt == INT_MAX) { /* inf or nan */ 873 if (*cp == 'N') { 874 cp = (ch >= 'a') ? L"nan" : L"NAN"; 875 sign = '\0'; 876 } else 877 cp = (ch >= 'a') ? L"inf" : L"INF"; 878 size = 3; 879 break; 880 } 881 flags |= FPT; 882 if (ch == 'g' || ch == 'G') { 883 if (expt > -4 && expt <= prec) { 884 /* Make %[gG] smell like %[fF] */ 885 expchar = '\0'; 886 if (flags & ALT) 887 prec -= expt; 888 else 889 prec = ndig - expt; 890 if (prec < 0) 891 prec = 0; 892 } 893 } 894 if (expchar) { 895 expsize = exponent(expstr, expt - 1, expchar); 896 size = expsize + prec; 897 if (prec > 1 || flags & ALT) 898 ++size; 899 } else { 900 if (expt > 0) { 901 size = expt; 902 if (prec || flags & ALT) 903 size += prec + 1; 904 } else /* "0.X" */ 905 size = prec + 2; 906 if (grouping && expt > 0) { 907 /* space for thousands' grouping */ 908 nseps = nrepeats = 0; 909 lead = expt; 910 while (*grouping != CHAR_MAX) { 911 if (lead <= *grouping) 912 break; 913 lead -= *grouping; 914 if (*(grouping+1)) { 915 nseps++; 916 grouping++; 917 } else 918 nrepeats++; 919 } 920 size += nseps + nrepeats; 921 } else 922 lead = expt; 923 } 924 break; 925 #endif /* FLOATING_POINT */ 926 case 'n': 927 /* 928 * Assignment-like behavior is specified if the 929 * value overflows or is otherwise unrepresentable. 930 * C99 says to use `signed char' for %hhn conversions. 931 */ 932 if (flags & LLONGINT) 933 *GETARG(long long *) = ret; 934 else if (flags & SIZET) 935 *GETARG(ssize_t *) = (ssize_t)ret; 936 else if (flags & PTRDIFFT) 937 *GETARG(ptrdiff_t *) = ret; 938 else if (flags & INTMAXT) 939 *GETARG(intmax_t *) = ret; 940 else if (flags & LONGINT) 941 *GETARG(long *) = ret; 942 else if (flags & SHORTINT) 943 *GETARG(short *) = ret; 944 else if (flags & CHARINT) 945 *GETARG(signed char *) = ret; 946 else 947 *GETARG(int *) = ret; 948 continue; /* no output */ 949 case 'O': 950 flags |= LONGINT; 951 /*FALLTHROUGH*/ 952 case 'o': 953 if (flags & INTMAX_SIZE) 954 ujval = UJARG(); 955 else 956 ulval = UARG(); 957 base = 8; 958 goto nosign; 959 case 'p': 960 /*- 961 * ``The argument shall be a pointer to void. The 962 * value of the pointer is converted to a sequence 963 * of printable characters, in an implementation- 964 * defined manner.'' 965 * -- ANSI X3J11 966 */ 967 ujval = (uintmax_t)(uintptr_t)GETARG(void *); 968 base = 16; 969 xdigs = xdigs_lower; 970 flags = flags | INTMAXT; 971 ox[1] = 'x'; 972 goto nosign; 973 case 'S': 974 flags |= LONGINT; 975 /*FALLTHROUGH*/ 976 case 's': 977 if (flags & LONGINT) { 978 if ((cp = GETARG(wchar_t *)) == NULL) 979 cp = L"(null)"; 980 } else { 981 char *mbp; 982 983 if (convbuf != NULL) 984 free(convbuf); 985 if ((mbp = GETARG(char *)) == NULL) 986 cp = L"(null)"; 987 else { 988 convbuf = __mbsconv(mbp, prec); 989 if (convbuf == NULL) { 990 fp->_flags |= __SERR; 991 goto error; 992 } 993 cp = convbuf; 994 } 995 } 996 997 if (prec >= 0) { 998 /* 999 * can't use wcslen; can only look for the 1000 * NUL in the first `prec' characters, and 1001 * wcslen() will go further. 1002 */ 1003 wchar_t *p = wmemchr(cp, 0, (size_t)prec); 1004 1005 if (p != NULL) { 1006 size = p - cp; 1007 if (size > prec) 1008 size = prec; 1009 } else 1010 size = prec; 1011 } else 1012 size = wcslen(cp); 1013 sign = '\0'; 1014 break; 1015 case 'U': 1016 flags |= LONGINT; 1017 /*FALLTHROUGH*/ 1018 case 'u': 1019 if (flags & INTMAX_SIZE) 1020 ujval = UJARG(); 1021 else 1022 ulval = UARG(); 1023 base = 10; 1024 goto nosign; 1025 case 'X': 1026 xdigs = xdigs_upper; 1027 goto hex; 1028 case 'x': 1029 xdigs = xdigs_lower; 1030 hex: 1031 if (flags & INTMAX_SIZE) 1032 ujval = UJARG(); 1033 else 1034 ulval = UARG(); 1035 base = 16; 1036 /* leading 0x/X only if non-zero */ 1037 if (flags & ALT && 1038 (flags & INTMAX_SIZE ? ujval != 0 : ulval != 0)) 1039 ox[1] = ch; 1040 1041 flags &= ~GROUPING; 1042 /* unsigned conversions */ 1043 nosign: sign = '\0'; 1044 /*- 1045 * ``... diouXx conversions ... if a precision is 1046 * specified, the 0 flag will be ignored.'' 1047 * -- ANSI X3J11 1048 */ 1049 number: if ((dprec = prec) >= 0) 1050 flags &= ~ZEROPAD; 1051 1052 /*- 1053 * ``The result of converting a zero value with an 1054 * explicit precision of zero is no characters.'' 1055 * -- ANSI X3J11 1056 */ 1057 cp = buf + BUF; 1058 if (flags & INTMAX_SIZE) { 1059 if (ujval != 0 || prec != 0) 1060 cp = __ujtoa(ujval, cp, base, 1061 flags & ALT, xdigs, 1062 flags & GROUPING, thousands_sep, 1063 grouping); 1064 } else { 1065 if (ulval != 0 || prec != 0) 1066 cp = __ultoa(ulval, cp, base, 1067 flags & ALT, xdigs, 1068 flags & GROUPING, thousands_sep, 1069 grouping); 1070 } 1071 size = buf + BUF - cp; 1072 if (size > BUF) /* should never happen */ 1073 abort(); 1074 break; 1075 default: /* "%?" prints ?, unless ? is NUL */ 1076 if (ch == '\0') 1077 goto done; 1078 /* pretend it was %c with argument ch */ 1079 cp = buf; 1080 *cp = ch; 1081 size = 1; 1082 sign = '\0'; 1083 break; 1084 } 1085 1086 /* 1087 * All reasonable formats wind up here. At this point, `cp' 1088 * points to a string which (if not flags&LADJUST) should be 1089 * padded out to `width' places. If flags&ZEROPAD, it should 1090 * first be prefixed by any sign or other prefix; otherwise, 1091 * it should be blank padded before the prefix is emitted. 1092 * After any left-hand padding and prefixing, emit zeroes 1093 * required by a decimal [diouxX] precision, then print the 1094 * string proper, then emit zeroes required by any leftover 1095 * floating precision; finally, if LADJUST, pad with blanks. 1096 * 1097 * Compute actual size, so we know how much to pad. 1098 * size excludes decimal prec; realsz includes it. 1099 */ 1100 realsz = dprec > size ? dprec : size; 1101 if (sign) 1102 realsz++; 1103 else if (ox[1]) 1104 realsz += 2; 1105 1106 prsize = width > realsz ? width : realsz; 1107 if ((unsigned)ret + prsize > INT_MAX) { 1108 ret = EOF; 1109 goto error; 1110 } 1111 1112 /* right-adjusting blank padding */ 1113 if ((flags & (LADJUST|ZEROPAD)) == 0) 1114 PAD(width - realsz, blanks); 1115 1116 /* prefix */ 1117 if (sign) { 1118 PRINT(&sign, 1); 1119 } else if (ox[1]) { /* ox[1] is either x, X, or \0 */ 1120 ox[0] = '0'; 1121 PRINT(ox, 2); 1122 } 1123 1124 /* right-adjusting zero padding */ 1125 if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD) 1126 PAD(width - realsz, zeroes); 1127 1128 /* leading zeroes from decimal precision */ 1129 PAD(dprec - size, zeroes); 1130 1131 /* the string or number proper */ 1132 #ifdef FLOATING_POINT 1133 if ((flags & FPT) == 0) { 1134 PRINT(cp, size); 1135 } else { /* glue together f_p fragments */ 1136 if (!expchar) { /* %[fF] or sufficiently short %[gG] */ 1137 if (expt <= 0) { 1138 buf[0] = '0'; 1139 buf[1] = *decimal_point; 1140 PRINT(buf, 2); 1141 PAD(-expt, zeroes); 1142 /* already handled initial 0's */ 1143 prec += expt; 1144 } else { 1145 PRINTANDPAD(cp, convbuf + ndig, lead, zeroes); 1146 cp += lead; 1147 if (grouping) { 1148 while (nseps>0 || nrepeats>0) { 1149 if (nrepeats > 0) 1150 nrepeats--; 1151 else { 1152 grouping--; 1153 nseps--; 1154 } 1155 PRINT(&thousands_sep, 1156 1); 1157 PRINTANDPAD(cp, 1158 convbuf + ndig, 1159 *grouping, zeroes); 1160 cp += *grouping; 1161 } 1162 if (cp > convbuf + ndig) 1163 cp = convbuf + ndig; 1164 } 1165 if (prec || flags & ALT) { 1166 buf[0] = *decimal_point; 1167 PRINT(buf, 1); 1168 } 1169 } 1170 PRINTANDPAD(cp, convbuf + ndig, prec, zeroes); 1171 } else { /* %[eE] or sufficiently long %[gG] */ 1172 if (prec > 1 || flags & ALT) { 1173 buf[0] = *cp++; 1174 buf[1] = *decimal_point; 1175 PRINT(buf, 2); 1176 PRINT(cp, ndig-1); 1177 PAD(prec - ndig, zeroes); 1178 } else /* XeYYY */ 1179 PRINT(cp, 1); 1180 PRINT(expstr, expsize); 1181 } 1182 } 1183 #else 1184 PRINT(cp, size); 1185 #endif 1186 /* left-adjusting padding (always blank) */ 1187 if (flags & LADJUST) 1188 PAD(width - realsz, blanks); 1189 1190 /* finally, adjust ret */ 1191 ret += prsize; 1192 } 1193 done: 1194 error: 1195 if (convbuf != NULL) 1196 free(convbuf); 1197 if (__sferror(fp)) 1198 ret = EOF; 1199 if ((argtable != NULL) && (argtable != statargtable)) 1200 free (argtable); 1201 return (ret); 1202 /* NOTREACHED */ 1203 } 1204 1205 /* 1206 * Find all arguments when a positional parameter is encountered. Returns a 1207 * table, indexed by argument number, of pointers to each arguments. The 1208 * initial argument table should be an array of STATIC_ARG_TBL_SIZE entries. 1209 * It will be replaces with a malloc-ed one if it overflows. 1210 */ 1211 static void 1212 __find_arguments (const wchar_t *fmt0, va_list ap, union arg **argtable) 1213 { 1214 wchar_t *fmt; /* format string */ 1215 wchar_t ch; /* character from fmt */ 1216 int n, n2; /* handy integer (short term usage) */ 1217 wchar_t *cp; /* handy char pointer (short term usage) */ 1218 int flags; /* flags as above */ 1219 int width; /* width from format (%8d), or 0 */ 1220 enum typeid *typetable; /* table of types */ 1221 enum typeid stattypetable [STATIC_ARG_TBL_SIZE]; 1222 int tablesize; /* current size of type table */ 1223 int tablemax; /* largest used index in table */ 1224 int nextarg; /* 1-based argument index */ 1225 1226 /* 1227 * Add an argument type to the table, expanding if necessary. 1228 */ 1229 #define ADDTYPE(type) \ 1230 ((nextarg >= tablesize) ? \ 1231 __grow_type_table(nextarg, &typetable, &tablesize) : 0, \ 1232 (nextarg > tablemax) ? tablemax = nextarg : 0, \ 1233 typetable[nextarg++] = type) 1234 1235 #define ADDSARG() \ 1236 ((flags&INTMAXT) ? ADDTYPE(T_INTMAXT) : \ 1237 ((flags&SIZET) ? ADDTYPE(T_SIZET) : \ 1238 ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \ 1239 ((flags&LLONGINT) ? ADDTYPE(T_LLONG) : \ 1240 ((flags&LONGINT) ? ADDTYPE(T_LONG) : ADDTYPE(T_INT)))))) 1241 1242 #define ADDUARG() \ 1243 ((flags&INTMAXT) ? ADDTYPE(T_UINTMAXT) : \ 1244 ((flags&SIZET) ? ADDTYPE(T_SIZET) : \ 1245 ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \ 1246 ((flags&LLONGINT) ? ADDTYPE(T_U_LLONG) : \ 1247 ((flags&LONGINT) ? ADDTYPE(T_U_LONG) : ADDTYPE(T_U_INT)))))) 1248 1249 /* 1250 * Add * arguments to the type array. 1251 */ 1252 #define ADDASTER() \ 1253 n2 = 0; \ 1254 cp = fmt; \ 1255 while (is_digit(*cp)) { \ 1256 n2 = 10 * n2 + to_digit(*cp); \ 1257 cp++; \ 1258 } \ 1259 if (*cp == '$') { \ 1260 int hold = nextarg; \ 1261 nextarg = n2; \ 1262 ADDTYPE (T_INT); \ 1263 nextarg = hold; \ 1264 fmt = ++cp; \ 1265 } else { \ 1266 ADDTYPE (T_INT); \ 1267 } 1268 fmt = (wchar_t *)fmt0; 1269 typetable = stattypetable; 1270 tablesize = STATIC_ARG_TBL_SIZE; 1271 tablemax = 0; 1272 nextarg = 1; 1273 memset (typetable, T_UNUSED, STATIC_ARG_TBL_SIZE); 1274 1275 /* 1276 * Scan the format for conversions (`%' character). 1277 */ 1278 for (;;) { 1279 for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++) 1280 /* void */; 1281 if (ch == '\0') 1282 goto done; 1283 fmt++; /* skip over '%' */ 1284 1285 flags = 0; 1286 width = 0; 1287 1288 rflag: ch = *fmt++; 1289 reswitch: switch (ch) { 1290 case ' ': 1291 case '#': 1292 goto rflag; 1293 case '*': 1294 ADDASTER (); 1295 goto rflag; 1296 case '-': 1297 case '+': 1298 case '\'': 1299 goto rflag; 1300 case '.': 1301 if ((ch = *fmt++) == '*') { 1302 ADDASTER (); 1303 goto rflag; 1304 } 1305 while (is_digit(ch)) { 1306 ch = *fmt++; 1307 } 1308 goto reswitch; 1309 case '0': 1310 goto rflag; 1311 case '1': case '2': case '3': case '4': 1312 case '5': case '6': case '7': case '8': case '9': 1313 n = 0; 1314 do { 1315 n = 10 * n + to_digit(ch); 1316 ch = *fmt++; 1317 } while (is_digit(ch)); 1318 if (ch == '$') { 1319 nextarg = n; 1320 goto rflag; 1321 } 1322 width = n; 1323 goto reswitch; 1324 #ifdef FLOATING_POINT 1325 case 'L': 1326 flags |= LONGDBL; 1327 goto rflag; 1328 #endif 1329 case 'h': 1330 if (flags & SHORTINT) { 1331 flags &= ~SHORTINT; 1332 flags |= CHARINT; 1333 } else 1334 flags |= SHORTINT; 1335 goto rflag; 1336 case 'j': 1337 flags |= INTMAXT; 1338 goto rflag; 1339 case 'l': 1340 if (flags & LONGINT) { 1341 flags &= ~LONGINT; 1342 flags |= LLONGINT; 1343 } else 1344 flags |= LONGINT; 1345 goto rflag; 1346 case 'q': 1347 flags |= LLONGINT; /* not necessarily */ 1348 goto rflag; 1349 case 't': 1350 flags |= PTRDIFFT; 1351 goto rflag; 1352 case 'z': 1353 flags |= SIZET; 1354 goto rflag; 1355 case 'C': 1356 flags |= LONGINT; 1357 /*FALLTHROUGH*/ 1358 case 'c': 1359 if (flags & LONGINT) 1360 ADDTYPE(T_WINT); 1361 else 1362 ADDTYPE(T_INT); 1363 break; 1364 case 'D': 1365 flags |= LONGINT; 1366 /*FALLTHROUGH*/ 1367 case 'd': 1368 case 'i': 1369 ADDSARG(); 1370 break; 1371 #ifdef FLOATING_POINT 1372 #ifdef HEXFLOAT 1373 case 'a': 1374 case 'A': 1375 #endif 1376 case 'e': 1377 case 'E': 1378 case 'f': 1379 case 'g': 1380 case 'G': 1381 if (flags & LONGDBL) 1382 ADDTYPE(T_LONG_DOUBLE); 1383 else 1384 ADDTYPE(T_DOUBLE); 1385 break; 1386 #endif /* FLOATING_POINT */ 1387 case 'n': 1388 if (flags & INTMAXT) 1389 ADDTYPE(TP_INTMAXT); 1390 else if (flags & PTRDIFFT) 1391 ADDTYPE(TP_PTRDIFFT); 1392 else if (flags & SIZET) 1393 ADDTYPE(TP_SIZET); 1394 else if (flags & LLONGINT) 1395 ADDTYPE(TP_LLONG); 1396 else if (flags & LONGINT) 1397 ADDTYPE(TP_LONG); 1398 else if (flags & SHORTINT) 1399 ADDTYPE(TP_SHORT); 1400 else if (flags & CHARINT) 1401 ADDTYPE(TP_SCHAR); 1402 else 1403 ADDTYPE(TP_INT); 1404 continue; /* no output */ 1405 case 'O': 1406 flags |= LONGINT; 1407 /*FALLTHROUGH*/ 1408 case 'o': 1409 ADDUARG(); 1410 break; 1411 case 'p': 1412 ADDTYPE(TP_VOID); 1413 break; 1414 case 'S': 1415 flags |= LONGINT; 1416 /*FALLTHROUGH*/ 1417 case 's': 1418 if (flags & LONGINT) 1419 ADDTYPE(TP_WCHAR); 1420 else 1421 ADDTYPE(TP_CHAR); 1422 break; 1423 case 'U': 1424 flags |= LONGINT; 1425 /*FALLTHROUGH*/ 1426 case 'u': 1427 case 'X': 1428 case 'x': 1429 ADDUARG(); 1430 break; 1431 default: /* "%?" prints ?, unless ? is NUL */ 1432 if (ch == '\0') 1433 goto done; 1434 break; 1435 } 1436 } 1437 done: 1438 /* 1439 * Build the argument table. 1440 */ 1441 if (tablemax >= STATIC_ARG_TBL_SIZE) { 1442 *argtable = (union arg *) 1443 malloc (sizeof (union arg) * (tablemax + 1)); 1444 } 1445 1446 (*argtable) [0].intarg = 0; 1447 for (n = 1; n <= tablemax; n++) { 1448 switch (typetable [n]) { 1449 case T_UNUSED: /* whoops! */ 1450 (*argtable) [n].intarg = va_arg (ap, int); 1451 break; 1452 case TP_SCHAR: 1453 (*argtable) [n].pschararg = va_arg (ap, signed char *); 1454 break; 1455 case TP_SHORT: 1456 (*argtable) [n].pshortarg = va_arg (ap, short *); 1457 break; 1458 case T_INT: 1459 (*argtable) [n].intarg = va_arg (ap, int); 1460 break; 1461 case T_U_INT: 1462 (*argtable) [n].uintarg = va_arg (ap, unsigned int); 1463 break; 1464 case TP_INT: 1465 (*argtable) [n].pintarg = va_arg (ap, int *); 1466 break; 1467 case T_LONG: 1468 (*argtable) [n].longarg = va_arg (ap, long); 1469 break; 1470 case T_U_LONG: 1471 (*argtable) [n].ulongarg = va_arg (ap, unsigned long); 1472 break; 1473 case TP_LONG: 1474 (*argtable) [n].plongarg = va_arg (ap, long *); 1475 break; 1476 case T_LLONG: 1477 (*argtable) [n].longlongarg = va_arg (ap, long long); 1478 break; 1479 case T_U_LLONG: 1480 (*argtable) [n].ulonglongarg = va_arg (ap, unsigned long long); 1481 break; 1482 case TP_LLONG: 1483 (*argtable) [n].plonglongarg = va_arg (ap, long long *); 1484 break; 1485 case T_PTRDIFFT: 1486 (*argtable) [n].ptrdiffarg = va_arg (ap, ptrdiff_t); 1487 break; 1488 case TP_PTRDIFFT: 1489 (*argtable) [n].pptrdiffarg = va_arg (ap, ptrdiff_t *); 1490 break; 1491 case T_SIZET: 1492 (*argtable) [n].sizearg = va_arg (ap, size_t); 1493 break; 1494 case TP_SIZET: 1495 (*argtable) [n].psizearg = va_arg (ap, ssize_t *); 1496 break; 1497 case T_INTMAXT: 1498 (*argtable) [n].intmaxarg = va_arg (ap, intmax_t); 1499 break; 1500 case T_UINTMAXT: 1501 (*argtable) [n].uintmaxarg = va_arg (ap, uintmax_t); 1502 break; 1503 case TP_INTMAXT: 1504 (*argtable) [n].pintmaxarg = va_arg (ap, intmax_t *); 1505 break; 1506 #ifdef FLOATING_POINT 1507 case T_DOUBLE: 1508 (*argtable) [n].doublearg = va_arg (ap, double); 1509 break; 1510 case T_LONG_DOUBLE: 1511 (*argtable) [n].longdoublearg = va_arg (ap, long double); 1512 break; 1513 #endif 1514 case TP_CHAR: 1515 (*argtable) [n].pchararg = va_arg (ap, char *); 1516 break; 1517 case TP_VOID: 1518 (*argtable) [n].pvoidarg = va_arg (ap, void *); 1519 break; 1520 case T_WINT: 1521 (*argtable) [n].wintarg = va_arg (ap, wint_t); 1522 break; 1523 case TP_WCHAR: 1524 (*argtable) [n].pwchararg = va_arg (ap, wchar_t *); 1525 break; 1526 } 1527 } 1528 1529 if ((typetable != NULL) && (typetable != stattypetable)) 1530 free (typetable); 1531 } 1532 1533 /* 1534 * Increase the size of the type table. 1535 */ 1536 static void 1537 __grow_type_table (int nextarg, enum typeid **typetable, int *tablesize) 1538 { 1539 enum typeid *const oldtable = *typetable; 1540 const int oldsize = *tablesize; 1541 enum typeid *newtable; 1542 int newsize = oldsize * 2; 1543 1544 if (newsize < nextarg + 1) 1545 newsize = nextarg + 1; 1546 if (oldsize == STATIC_ARG_TBL_SIZE) { 1547 if ((newtable = malloc(newsize)) == NULL) 1548 abort(); /* XXX handle better */ 1549 bcopy(oldtable, newtable, oldsize); 1550 } else { 1551 if ((newtable = reallocf(oldtable, newsize)) == NULL) 1552 abort(); /* XXX handle better */ 1553 } 1554 memset(&newtable[oldsize], T_UNUSED, newsize - oldsize); 1555 1556 *typetable = newtable; 1557 *tablesize = newsize; 1558 } 1559 1560 1561 #ifdef FLOATING_POINT 1562 1563 static int 1564 exponent(wchar_t *p0, int exp, wchar_t fmtch) 1565 { 1566 wchar_t *p, *t; 1567 wchar_t expbuf[MAXEXPDIG]; 1568 1569 p = p0; 1570 *p++ = fmtch; 1571 if (exp < 0) { 1572 exp = -exp; 1573 *p++ = '-'; 1574 } 1575 else 1576 *p++ = '+'; 1577 t = expbuf + MAXEXPDIG; 1578 if (exp > 9) { 1579 do { 1580 *--t = to_char(exp % 10); 1581 } while ((exp /= 10) > 9); 1582 *--t = to_char(exp); 1583 for (; t < expbuf + MAXEXPDIG; *p++ = *t++); 1584 } 1585 else { 1586 /* 1587 * Exponents for decimal floating point conversions 1588 * (%[eEgG]) must be at least two characters long, 1589 * whereas exponents for hexadecimal conversions can 1590 * be only one character long. 1591 */ 1592 if (fmtch == 'e' || fmtch == 'E') 1593 *p++ = '0'; 1594 *p++ = to_char(exp); 1595 } 1596 return (p - p0); 1597 } 1598 #endif /* FLOATING_POINT */ 1599