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 1.45 2002/09/06 11:23:55 tjr 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, wchar_t *, int, char, 118 const char *); 119 static wchar_t *__ultoa(u_long, wchar_t *, int, int, wchar_t *, int, char, 120 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, 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, wchar_t *xdigs, 250 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 /* 334 * Supplied argument is a multibyte string; convert it to wide 335 * characters first. 336 */ 337 if (prec >= 0) { 338 /* 339 * String is not guaranteed to be NUL-terminated. Find the 340 * number of characters to print. 341 */ 342 memset(&mbs, 0, sizeof(mbs)); 343 p = mbsarg; 344 insize = nchars = 0; 345 while (nchars != (size_t)prec) { 346 nconv = mbrlen(p, MB_CUR_MAX, &mbs); 347 if (nconv == 0 || nconv == (size_t)-1 || 348 nconv == (size_t)-2) 349 break; 350 p += nconv; 351 nchars++; 352 insize += nconv; 353 } 354 if (nconv == (size_t)-1 || nconv == (size_t)-2) 355 return (NULL); 356 } else 357 insize = strlen(mbsarg); 358 359 /* 360 * Allocate buffer for the result and perform the conversion, 361 * converting at most `size' bytes of the input multibyte string to 362 * wide characters for printing. 363 */ 364 convbuf = malloc((insize + 1) * sizeof(*convbuf)); 365 if (convbuf == NULL) 366 return (NULL); 367 wcp = convbuf; 368 p = mbsarg; 369 memset(&mbs, 0, sizeof(mbs)); 370 while (insize != 0) { 371 nconv = mbrtowc(wcp, p, insize, &mbs); 372 if (nconv == 0 || nconv == (size_t)-1 || nconv == (size_t)-2) 373 break; 374 wcp++; 375 p += nconv; 376 insize -= nconv; 377 } 378 if (nconv == (size_t)-1 || nconv == (size_t)-2) { 379 free(convbuf); 380 return (NULL); 381 } 382 *wcp = L'\0'; 383 384 return (convbuf); 385 } 386 387 /* 388 * MT-safe version 389 */ 390 int 391 vfwprintf(FILE * __restrict fp, const wchar_t * __restrict fmt0, va_list ap) 392 393 { 394 int ret; 395 396 FLOCKFILE(fp); 397 ret = __vfwprintf(fp, fmt0, ap); 398 FUNLOCKFILE(fp); 399 return (ret); 400 } 401 402 #ifdef FLOATING_POINT 403 #include <math.h> 404 #include "floatio.h" 405 406 #define BUF ((MAXEXP*2)+MAXFRACT+1) /* + decimal point */ 407 #define DEFPREC 6 408 409 static wchar_t *cvt(double, int, int, char *, int *, wchar_t, int *, 410 wchar_t **); 411 static int exponent(wchar_t *, int, wchar_t); 412 413 #else /* no FLOATING_POINT */ 414 415 #define BUF 136 416 417 #endif /* FLOATING_POINT */ 418 419 #define STATIC_ARG_TBL_SIZE 8 /* Size of static argument table. */ 420 421 /* 422 * Flags used during conversion. 423 */ 424 #define ALT 0x001 /* alternate form */ 425 #define HEXPREFIX 0x002 /* add 0x or 0X prefix */ 426 #define LADJUST 0x004 /* left adjustment */ 427 #define LONGDBL 0x008 /* long double */ 428 #define LONGINT 0x010 /* long integer */ 429 #define LLONGINT 0x020 /* long long integer */ 430 #define SHORTINT 0x040 /* short integer */ 431 #define ZEROPAD 0x080 /* zero (as opposed to blank) pad */ 432 #define FPT 0x100 /* Floating point number */ 433 #define GROUPING 0x200 /* use grouping ("'" flag) */ 434 /* C99 additional size modifiers: */ 435 #define SIZET 0x400 /* size_t */ 436 #define PTRDIFFT 0x800 /* ptrdiff_t */ 437 #define INTMAXT 0x1000 /* intmax_t */ 438 #define CHARINT 0x2000 /* print char using int format */ 439 440 /* 441 * Non-MT-safe version 442 */ 443 int 444 __vfwprintf(FILE *fp, const wchar_t *fmt0, va_list ap) 445 { 446 wchar_t *fmt; /* format string */ 447 wchar_t ch; /* character from fmt */ 448 int n, n2; /* handy integer (short term usage) */ 449 wchar_t *cp; /* handy char pointer (short term usage) */ 450 int flags; /* flags as above */ 451 int ret; /* return value accumulator */ 452 int width; /* width from format (%8d), or 0 */ 453 int prec; /* precision from format (%.3d), or -1 */ 454 wchar_t sign; /* sign prefix (' ', '+', '-', or \0) */ 455 char thousands_sep; /* locale specific thousands separator */ 456 const char *grouping; /* locale specific numeric grouping rules */ 457 #ifdef FLOATING_POINT 458 char *decimal_point; /* locale specific decimal point */ 459 char softsign; /* temporary negative sign for floats */ 460 double _double; /* double precision arguments %[eEfgG] */ 461 int expt; /* integer value of exponent */ 462 int expsize; /* character count for expstr */ 463 int ndig; /* actual number of digits returned by cvt */ 464 wchar_t expstr[7]; /* buffer for exponent string */ 465 wchar_t *dtoaresult; /* buffer allocated by dtoa */ 466 #endif 467 u_long ulval; /* integer arguments %[diouxX] */ 468 uintmax_t ujval; /* %j, %ll, %q, %t, %z integers */ 469 int base; /* base for [diouxX] conversion */ 470 int dprec; /* a copy of prec if [diouxX], 0 otherwise */ 471 int realsz; /* field size expanded by dprec, sign, etc */ 472 int size; /* size of converted field or string */ 473 int prsize; /* max size of printed field */ 474 wchar_t *xdigs; /* digits for [xX] conversion */ 475 wchar_t buf[BUF]; /* space for %c, %[diouxX], %[eEfFgG] */ 476 wchar_t ox[2]; /* space for 0x hex-prefix */ 477 union arg *argtable; /* args, built due to positional arg */ 478 union arg statargtable [STATIC_ARG_TBL_SIZE]; 479 int nextarg; /* 1-based argument index */ 480 va_list orgap; /* original argument pointer */ 481 wchar_t *convbuf; /* multibyte to wide conversion result */ 482 483 /* 484 * Choose PADSIZE to trade efficiency vs. size. If larger printf 485 * fields occur frequently, increase PADSIZE and make the initialisers 486 * below longer. 487 */ 488 #define PADSIZE 16 /* pad chunk size */ 489 static wchar_t blanks[PADSIZE] = 490 {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '}; 491 static wchar_t zeroes[PADSIZE] = 492 {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'}; 493 494 /* 495 * BEWARE, these `goto error' on error, PRINT uses `n2' and 496 * PAD uses `n'. 497 */ 498 #define PRINT(ptr, len) do { \ 499 for (n2 = 0; n2 < (len); n2++) \ 500 __fputwc((ptr)[n2], fp); \ 501 } while (0) 502 #define PAD(howmany, with) do { \ 503 if ((n = (howmany)) > 0) { \ 504 while (n > PADSIZE) { \ 505 PRINT(with, PADSIZE); \ 506 n -= PADSIZE; \ 507 } \ 508 PRINT(with, n); \ 509 } \ 510 } while (0) 511 512 /* 513 * Get the argument indexed by nextarg. If the argument table is 514 * built, use it to get the argument. If its not, get the next 515 * argument (and arguments must be gotten sequentially). 516 */ 517 #define GETARG(type) \ 518 ((argtable != NULL) ? *((type*)(&argtable[nextarg++])) : \ 519 (nextarg++, va_arg(ap, type))) 520 521 /* 522 * To extend shorts properly, we need both signed and unsigned 523 * argument extraction methods. 524 */ 525 #define SARG() \ 526 (flags&LONGINT ? GETARG(long) : \ 527 flags&SHORTINT ? (long)(short)GETARG(int) : \ 528 flags&CHARINT ? (long)(signed char)GETARG(int) : \ 529 (long)GETARG(int)) 530 #define UARG() \ 531 (flags&LONGINT ? GETARG(u_long) : \ 532 flags&SHORTINT ? (u_long)(u_short)GETARG(int) : \ 533 flags&CHARINT ? (u_long)(u_char)GETARG(int) : \ 534 (u_long)GETARG(u_int)) 535 #define INTMAX_SIZE (INTMAXT|SIZET|PTRDIFFT|LLONGINT) 536 #define SJARG() \ 537 (flags&INTMAXT ? GETARG(intmax_t) : \ 538 flags&SIZET ? (intmax_t)GETARG(size_t) : \ 539 flags&PTRDIFFT ? (intmax_t)GETARG(ptrdiff_t) : \ 540 (intmax_t)GETARG(long long)) 541 #define UJARG() \ 542 (flags&INTMAXT ? GETARG(uintmax_t) : \ 543 flags&SIZET ? (uintmax_t)GETARG(size_t) : \ 544 flags&PTRDIFFT ? (uintmax_t)GETARG(ptrdiff_t) : \ 545 (uintmax_t)GETARG(unsigned long long)) 546 547 /* 548 * Get * arguments, including the form *nn$. Preserve the nextarg 549 * that the argument can be gotten once the type is determined. 550 */ 551 #define GETASTER(val) \ 552 n2 = 0; \ 553 cp = fmt; \ 554 while (is_digit(*cp)) { \ 555 n2 = 10 * n2 + to_digit(*cp); \ 556 cp++; \ 557 } \ 558 if (*cp == '$') { \ 559 int hold = nextarg; \ 560 if (argtable == NULL) { \ 561 argtable = statargtable; \ 562 __find_arguments (fmt0, orgap, &argtable); \ 563 } \ 564 nextarg = n2; \ 565 val = GETARG (int); \ 566 nextarg = hold; \ 567 fmt = ++cp; \ 568 } else { \ 569 val = GETARG (int); \ 570 } 571 572 573 thousands_sep = '\0'; 574 grouping = NULL; 575 #ifdef FLOATING_POINT 576 dtoaresult = NULL; 577 decimal_point = localeconv()->decimal_point; 578 #endif 579 convbuf = NULL; 580 /* sorry, fwprintf(read_only_file, L"") returns WEOF, not 0 */ 581 if (cantwrite(fp)) 582 return (EOF); 583 584 /* optimise fprintf(stderr) (and other unbuffered Unix files) */ 585 if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) && 586 fp->_file >= 0) 587 return (__sbprintf(fp, fmt0, ap)); 588 589 fmt = (wchar_t *)fmt0; 590 argtable = NULL; 591 nextarg = 1; 592 va_copy(orgap, ap); 593 ret = 0; 594 595 /* 596 * Scan the format for conversions (`%' character). 597 */ 598 for (;;) { 599 for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++) 600 /* void */; 601 if ((n = fmt - cp) != 0) { 602 if ((unsigned)ret + n > INT_MAX) { 603 ret = EOF; 604 goto error; 605 } 606 PRINT(cp, n); 607 ret += n; 608 } 609 if (ch == '\0') 610 goto done; 611 fmt++; /* skip over '%' */ 612 613 flags = 0; 614 dprec = 0; 615 width = 0; 616 prec = -1; 617 sign = '\0'; 618 619 rflag: ch = *fmt++; 620 reswitch: switch (ch) { 621 case ' ': 622 /*- 623 * ``If the space and + flags both appear, the space 624 * flag will be ignored.'' 625 * -- ANSI X3J11 626 */ 627 if (!sign) 628 sign = ' '; 629 goto rflag; 630 case '#': 631 flags |= ALT; 632 goto rflag; 633 case '*': 634 /*- 635 * ``A negative field width argument is taken as a 636 * - flag followed by a positive field width.'' 637 * -- ANSI X3J11 638 * They don't exclude field widths read from args. 639 */ 640 GETASTER (width); 641 if (width >= 0) 642 goto rflag; 643 width = -width; 644 /* FALLTHROUGH */ 645 case '-': 646 flags |= LADJUST; 647 goto rflag; 648 case '+': 649 sign = '+'; 650 goto rflag; 651 case '\'': 652 flags |= GROUPING; 653 thousands_sep = *(localeconv()->thousands_sep); 654 grouping = localeconv()->grouping; 655 goto rflag; 656 case '.': 657 if ((ch = *fmt++) == '*') { 658 GETASTER (n); 659 prec = n < 0 ? -1 : n; 660 goto rflag; 661 } 662 n = 0; 663 while (is_digit(ch)) { 664 n = 10 * n + to_digit(ch); 665 ch = *fmt++; 666 } 667 prec = n < 0 ? -1 : n; 668 goto reswitch; 669 case '0': 670 /*- 671 * ``Note that 0 is taken as a flag, not as the 672 * beginning of a field width.'' 673 * -- ANSI X3J11 674 */ 675 flags |= ZEROPAD; 676 goto rflag; 677 case '1': case '2': case '3': case '4': 678 case '5': case '6': case '7': case '8': case '9': 679 n = 0; 680 do { 681 n = 10 * n + to_digit(ch); 682 ch = *fmt++; 683 } while (is_digit(ch)); 684 if (ch == '$') { 685 nextarg = n; 686 if (argtable == NULL) { 687 argtable = statargtable; 688 __find_arguments (fmt0, orgap, 689 &argtable); 690 } 691 goto rflag; 692 } 693 width = n; 694 goto reswitch; 695 #ifdef FLOATING_POINT 696 case 'L': 697 flags |= LONGDBL; 698 goto rflag; 699 #endif 700 case 'h': 701 if (flags & SHORTINT) { 702 flags &= ~SHORTINT; 703 flags |= CHARINT; 704 } else 705 flags |= SHORTINT; 706 goto rflag; 707 case 'j': 708 flags |= INTMAXT; 709 goto rflag; 710 case 'l': 711 if (flags & LONGINT) { 712 flags &= ~LONGINT; 713 flags |= LLONGINT; 714 } else 715 flags |= LONGINT; 716 goto rflag; 717 case 'q': 718 flags |= LLONGINT; /* not necessarily */ 719 goto rflag; 720 case 't': 721 flags |= PTRDIFFT; 722 goto rflag; 723 case 'z': 724 flags |= SIZET; 725 goto rflag; 726 case 'c': 727 if (flags & LONGINT) 728 *(cp = buf) = (wchar_t)GETARG(wint_t); 729 else 730 *(cp = buf) = (wchar_t)btowc(GETARG(int)); 731 size = 1; 732 sign = '\0'; 733 break; 734 case 'D': 735 flags |= LONGINT; 736 /*FALLTHROUGH*/ 737 case 'd': 738 case 'i': 739 if (flags & INTMAX_SIZE) { 740 ujval = SJARG(); 741 if ((intmax_t)ujval < 0) { 742 ujval = -ujval; 743 sign = '-'; 744 } 745 } else { 746 ulval = SARG(); 747 if ((long)ulval < 0) { 748 ulval = -ulval; 749 sign = '-'; 750 } 751 } 752 base = 10; 753 goto number; 754 #ifdef FLOATING_POINT 755 #ifdef HEXFLOAT 756 case 'a': 757 case 'A': 758 #endif 759 case 'e': 760 case 'E': 761 /*- 762 * Grouping apply to %i, %d, %u, %f, %F, %g, %G 763 * conversion specifiers only. For other conversions 764 * behavior is undefined. 765 * -- POSIX 766 */ 767 flags &= ~GROUPING; 768 /*FALLTHROUGH*/ 769 case 'f': 770 case 'F': 771 goto fp_begin; 772 case 'g': 773 case 'G': 774 if (prec == 0) 775 prec = 1; 776 fp_begin: if (prec == -1) 777 prec = DEFPREC; 778 if (flags & LONGDBL) 779 /* XXX this loses precision. */ 780 _double = (double)GETARG(long double); 781 else 782 _double = GETARG(double); 783 /* do this before tricky precision changes */ 784 if (isinf(_double)) { 785 if (_double < 0) 786 sign = '-'; 787 if (iswupper(ch)) 788 cp = L"INF"; 789 else 790 cp = L"inf"; 791 size = 3; 792 break; 793 } 794 if (isnan(_double)) { 795 if (iswupper(ch)) 796 cp = L"NAN"; 797 else 798 cp = L"nan"; 799 size = 3; 800 break; 801 } 802 flags |= FPT; 803 if (dtoaresult != NULL) { 804 free(dtoaresult); 805 dtoaresult = NULL; 806 } 807 cp = cvt(_double, prec, flags, &softsign, 808 &expt, ch, &ndig, &dtoaresult); 809 if (ch == 'g' || ch == 'G') { 810 if (expt <= -4 || expt > prec) 811 ch = (ch == 'g') ? 'e' : 'E'; 812 else 813 ch = 'g'; 814 } 815 if (ch == 'e' || ch == 'E') { 816 --expt; 817 expsize = exponent(expstr, expt, ch); 818 size = expsize + ndig; 819 if (ndig > 1 || flags & ALT) 820 ++size; 821 } else if (ch == 'f' || ch == 'F') { 822 if (expt > 0) { 823 size = expt; 824 if (prec || flags & ALT) 825 size += prec + 1; 826 } else /* "0.X" */ 827 size = prec + 2; 828 } else if (expt >= ndig) { /* fixed g fmt */ 829 size = expt; 830 if (flags & ALT) 831 ++size; 832 } else 833 size = ndig + (expt > 0 ? 834 1 : 2 - expt); 835 836 if (softsign) 837 sign = '-'; 838 break; 839 #endif /* FLOATING_POINT */ 840 case 'n': 841 /* 842 * Assignment-like behavior is specified if the 843 * value overflows or is otherwise unrepresentable. 844 * C99 says to use `signed char' for %hhn conversions. 845 */ 846 if (flags & LLONGINT) 847 *GETARG(long long *) = ret; 848 else if (flags & SIZET) 849 *GETARG(ssize_t *) = (ssize_t)ret; 850 else if (flags & PTRDIFFT) 851 *GETARG(ptrdiff_t *) = ret; 852 else if (flags & INTMAXT) 853 *GETARG(intmax_t *) = ret; 854 else if (flags & LONGINT) 855 *GETARG(long *) = ret; 856 else if (flags & SHORTINT) 857 *GETARG(short *) = ret; 858 else if (flags & CHARINT) 859 *GETARG(signed char *) = ret; 860 else 861 *GETARG(int *) = ret; 862 continue; /* no output */ 863 case 'O': 864 flags |= LONGINT; 865 /*FALLTHROUGH*/ 866 case 'o': 867 if (flags & INTMAX_SIZE) 868 ujval = UJARG(); 869 else 870 ulval = UARG(); 871 base = 8; 872 goto nosign; 873 case 'p': 874 /*- 875 * ``The argument shall be a pointer to void. The 876 * value of the pointer is converted to a sequence 877 * of printable characters, in an implementation- 878 * defined manner.'' 879 * -- ANSI X3J11 880 */ 881 ujval = (uintmax_t)(uintptr_t)GETARG(void *); 882 base = 16; 883 xdigs = L"0123456789abcdef"; 884 flags = flags | INTMAXT | HEXPREFIX; 885 ch = 'x'; 886 goto nosign; 887 case 's': 888 if (flags & LONGINT) { 889 if ((cp = GETARG(wchar_t *)) == NULL) 890 cp = L"(null)"; 891 } else { 892 char *mbp; 893 894 if (convbuf != NULL) 895 free(convbuf); 896 if ((mbp = GETARG(char *)) == NULL) 897 cp = L"(null)"; 898 else { 899 convbuf = __mbsconv(mbp, prec); 900 if (convbuf == NULL) 901 goto error; 902 cp = convbuf; 903 } 904 } 905 906 if (prec >= 0) { 907 /* 908 * can't use wcslen; can only look for the 909 * NUL in the first `prec' characters, and 910 * wcslen() will go further. 911 */ 912 wchar_t *p = wmemchr(cp, 0, (size_t)prec); 913 914 if (p != NULL) { 915 size = p - cp; 916 if (size > prec) 917 size = prec; 918 } else 919 size = prec; 920 } else 921 size = wcslen(cp); 922 sign = '\0'; 923 break; 924 case 'U': 925 flags |= LONGINT; 926 /*FALLTHROUGH*/ 927 case 'u': 928 if (flags & INTMAX_SIZE) 929 ujval = UJARG(); 930 else 931 ulval = UARG(); 932 base = 10; 933 goto nosign; 934 case 'X': 935 xdigs = L"0123456789ABCDEF"; 936 goto hex; 937 case 'x': 938 xdigs = L"0123456789abcdef"; 939 hex: 940 if (flags & INTMAX_SIZE) 941 ujval = UJARG(); 942 else 943 ulval = UARG(); 944 base = 16; 945 /* leading 0x/X only if non-zero */ 946 if (flags & ALT && 947 (flags & INTMAX_SIZE ? ujval != 0 : ulval != 0)) 948 flags |= HEXPREFIX; 949 950 flags &= ~GROUPING; 951 /* unsigned conversions */ 952 nosign: sign = '\0'; 953 /*- 954 * ``... diouXx conversions ... if a precision is 955 * specified, the 0 flag will be ignored.'' 956 * -- ANSI X3J11 957 */ 958 number: if ((dprec = prec) >= 0) 959 flags &= ~ZEROPAD; 960 961 /*- 962 * ``The result of converting a zero value with an 963 * explicit precision of zero is no characters.'' 964 * -- ANSI X3J11 965 */ 966 cp = buf + BUF; 967 if (flags & INTMAX_SIZE) { 968 if (ujval != 0 || prec != 0) 969 cp = __ujtoa(ujval, cp, base, 970 flags & ALT, xdigs, 971 flags & GROUPING, thousands_sep, 972 grouping); 973 } else { 974 if (ulval != 0 || prec != 0) 975 cp = __ultoa(ulval, cp, base, 976 flags & ALT, xdigs, 977 flags & GROUPING, thousands_sep, 978 grouping); 979 } 980 size = buf + BUF - cp; 981 break; 982 default: /* "%?" prints ?, unless ? is NUL */ 983 if (ch == '\0') 984 goto done; 985 /* pretend it was %c with argument ch */ 986 cp = buf; 987 *cp = ch; 988 size = 1; 989 sign = '\0'; 990 break; 991 } 992 993 /* 994 * All reasonable formats wind up here. At this point, `cp' 995 * points to a string which (if not flags&LADJUST) should be 996 * padded out to `width' places. If flags&ZEROPAD, it should 997 * first be prefixed by any sign or other prefix; otherwise, 998 * it should be blank padded before the prefix is emitted. 999 * After any left-hand padding and prefixing, emit zeroes 1000 * required by a decimal [diouxX] precision, then print the 1001 * string proper, then emit zeroes required by any leftover 1002 * floating precision; finally, if LADJUST, pad with blanks. 1003 * 1004 * Compute actual size, so we know how much to pad. 1005 * size excludes decimal prec; realsz includes it. 1006 */ 1007 realsz = dprec > size ? dprec : size; 1008 if (sign) 1009 realsz++; 1010 else if (flags & HEXPREFIX) 1011 realsz += 2; 1012 1013 prsize = width > realsz ? width : realsz; 1014 if ((unsigned)ret + prsize > INT_MAX) { 1015 ret = EOF; 1016 goto error; 1017 } 1018 1019 /* right-adjusting blank padding */ 1020 if ((flags & (LADJUST|ZEROPAD)) == 0) 1021 PAD(width - realsz, blanks); 1022 1023 /* prefix */ 1024 if (sign) { 1025 PRINT(&sign, 1); 1026 } else if (flags & HEXPREFIX) { 1027 ox[0] = '0'; 1028 ox[1] = ch; 1029 PRINT(ox, 2); 1030 } 1031 1032 /* right-adjusting zero padding */ 1033 if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD) 1034 PAD(width - realsz, zeroes); 1035 1036 /* leading zeroes from decimal precision */ 1037 PAD(dprec - size, zeroes); 1038 1039 /* the string or number proper */ 1040 #ifdef FLOATING_POINT 1041 if ((flags & FPT) == 0) { 1042 PRINT(cp, size); 1043 } else { /* glue together f_p fragments */ 1044 if (ch >= 'f') { /* 'f' or 'g' */ 1045 if (_double == 0) { 1046 /* kludge for __dtoa irregularity */ 1047 PRINT(L"0", 1); 1048 if (expt < ndig || (flags & ALT) != 0) { 1049 PRINT(decimal_point, 1); 1050 PAD(ndig - 1, zeroes); 1051 } 1052 } else if (expt <= 0) { 1053 PRINT(L"0", 1); 1054 PRINT(decimal_point, 1); 1055 PAD(-expt, zeroes); 1056 PRINT(cp, ndig); 1057 } else if (expt >= ndig) { 1058 PRINT(cp, ndig); 1059 PAD(expt - ndig, zeroes); 1060 if (flags & ALT) 1061 PRINT(decimal_point, 1); 1062 } else { 1063 PRINT(cp, expt); 1064 cp += expt; 1065 PRINT(decimal_point, 1); 1066 PRINT(cp, ndig-expt); 1067 } 1068 } else { /* 'e' or 'E' */ 1069 if (ndig > 1 || flags & ALT) { 1070 ox[0] = *cp++; 1071 ox[1] = *decimal_point; 1072 PRINT(ox, 2); 1073 if (_double) { 1074 PRINT(cp, ndig-1); 1075 } else /* 0.[0..] */ 1076 /* __dtoa irregularity */ 1077 PAD(ndig - 1, zeroes); 1078 } else /* XeYYY */ 1079 PRINT(cp, 1); 1080 PRINT(expstr, expsize); 1081 } 1082 } 1083 #else 1084 PRINT(cp, size); 1085 #endif 1086 /* left-adjusting padding (always blank) */ 1087 if (flags & LADJUST) 1088 PAD(width - realsz, blanks); 1089 1090 /* finally, adjust ret */ 1091 ret += prsize; 1092 } 1093 done: 1094 error: 1095 #ifdef FLOATING_POINT 1096 if (dtoaresult != NULL) 1097 free(dtoaresult); 1098 #endif 1099 if (convbuf != NULL) 1100 free(convbuf); 1101 if (__sferror(fp)) 1102 ret = EOF; 1103 if ((argtable != NULL) && (argtable != statargtable)) 1104 free (argtable); 1105 return (ret); 1106 /* NOTREACHED */ 1107 } 1108 1109 /* 1110 * Find all arguments when a positional parameter is encountered. Returns a 1111 * table, indexed by argument number, of pointers to each arguments. The 1112 * initial argument table should be an array of STATIC_ARG_TBL_SIZE entries. 1113 * It will be replaces with a malloc-ed one if it overflows. 1114 */ 1115 static void 1116 __find_arguments (const wchar_t *fmt0, va_list ap, union arg **argtable) 1117 { 1118 wchar_t *fmt; /* format string */ 1119 wchar_t ch; /* character from fmt */ 1120 int n, n2; /* handy integer (short term usage) */ 1121 wchar_t *cp; /* handy char pointer (short term usage) */ 1122 int flags; /* flags as above */ 1123 int width; /* width from format (%8d), or 0 */ 1124 enum typeid *typetable; /* table of types */ 1125 enum typeid stattypetable [STATIC_ARG_TBL_SIZE]; 1126 int tablesize; /* current size of type table */ 1127 int tablemax; /* largest used index in table */ 1128 int nextarg; /* 1-based argument index */ 1129 1130 /* 1131 * Add an argument type to the table, expanding if necessary. 1132 */ 1133 #define ADDTYPE(type) \ 1134 ((nextarg >= tablesize) ? \ 1135 __grow_type_table(nextarg, &typetable, &tablesize) : 0, \ 1136 (nextarg > tablemax) ? tablemax = nextarg : 0, \ 1137 typetable[nextarg++] = type) 1138 1139 #define ADDSARG() \ 1140 ((flags&INTMAXT) ? ADDTYPE(T_INTMAXT) : \ 1141 ((flags&SIZET) ? ADDTYPE(T_SIZET) : \ 1142 ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \ 1143 ((flags&LLONGINT) ? ADDTYPE(T_LLONG) : \ 1144 ((flags&LONGINT) ? ADDTYPE(T_LONG) : ADDTYPE(T_INT)))))) 1145 1146 #define ADDUARG() \ 1147 ((flags&INTMAXT) ? ADDTYPE(T_UINTMAXT) : \ 1148 ((flags&SIZET) ? ADDTYPE(T_SIZET) : \ 1149 ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \ 1150 ((flags&LLONGINT) ? ADDTYPE(T_U_LLONG) : \ 1151 ((flags&LONGINT) ? ADDTYPE(T_U_LONG) : ADDTYPE(T_U_INT)))))) 1152 1153 /* 1154 * Add * arguments to the type array. 1155 */ 1156 #define ADDASTER() \ 1157 n2 = 0; \ 1158 cp = fmt; \ 1159 while (is_digit(*cp)) { \ 1160 n2 = 10 * n2 + to_digit(*cp); \ 1161 cp++; \ 1162 } \ 1163 if (*cp == '$') { \ 1164 int hold = nextarg; \ 1165 nextarg = n2; \ 1166 ADDTYPE (T_INT); \ 1167 nextarg = hold; \ 1168 fmt = ++cp; \ 1169 } else { \ 1170 ADDTYPE (T_INT); \ 1171 } 1172 fmt = (wchar_t *)fmt0; 1173 typetable = stattypetable; 1174 tablesize = STATIC_ARG_TBL_SIZE; 1175 tablemax = 0; 1176 nextarg = 1; 1177 memset (typetable, T_UNUSED, STATIC_ARG_TBL_SIZE); 1178 1179 /* 1180 * Scan the format for conversions (`%' character). 1181 */ 1182 for (;;) { 1183 for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++) 1184 /* void */; 1185 if (ch == '\0') 1186 goto done; 1187 fmt++; /* skip over '%' */ 1188 1189 flags = 0; 1190 width = 0; 1191 1192 rflag: ch = *fmt++; 1193 reswitch: switch (ch) { 1194 case ' ': 1195 case '#': 1196 goto rflag; 1197 case '*': 1198 ADDASTER (); 1199 goto rflag; 1200 case '-': 1201 case '+': 1202 case '\'': 1203 goto rflag; 1204 case '.': 1205 if ((ch = *fmt++) == '*') { 1206 ADDASTER (); 1207 goto rflag; 1208 } 1209 while (is_digit(ch)) { 1210 ch = *fmt++; 1211 } 1212 goto reswitch; 1213 case '0': 1214 goto rflag; 1215 case '1': case '2': case '3': case '4': 1216 case '5': case '6': case '7': case '8': case '9': 1217 n = 0; 1218 do { 1219 n = 10 * n + to_digit(ch); 1220 ch = *fmt++; 1221 } while (is_digit(ch)); 1222 if (ch == '$') { 1223 nextarg = n; 1224 goto rflag; 1225 } 1226 width = n; 1227 goto reswitch; 1228 #ifdef FLOATING_POINT 1229 case 'L': 1230 flags |= LONGDBL; 1231 goto rflag; 1232 #endif 1233 case 'h': 1234 if (flags & SHORTINT) { 1235 flags &= ~SHORTINT; 1236 flags |= CHARINT; 1237 } else 1238 flags |= SHORTINT; 1239 goto rflag; 1240 case 'j': 1241 flags |= INTMAXT; 1242 goto rflag; 1243 case 'l': 1244 if (flags & LONGINT) { 1245 flags &= ~LONGINT; 1246 flags |= LLONGINT; 1247 } else 1248 flags |= LONGINT; 1249 goto rflag; 1250 case 'q': 1251 flags |= LLONGINT; /* not necessarily */ 1252 goto rflag; 1253 case 't': 1254 flags |= PTRDIFFT; 1255 goto rflag; 1256 case 'z': 1257 flags |= SIZET; 1258 goto rflag; 1259 case 'c': 1260 if (flags & LONGINT) 1261 ADDTYPE(T_WINT); 1262 else 1263 ADDTYPE(T_INT); 1264 break; 1265 case 'D': 1266 flags |= LONGINT; 1267 /*FALLTHROUGH*/ 1268 case 'd': 1269 case 'i': 1270 ADDSARG(); 1271 break; 1272 #ifdef FLOATING_POINT 1273 #ifdef HEXFLOAT 1274 case 'a': 1275 case 'A': 1276 #endif 1277 case 'e': 1278 case 'E': 1279 case 'f': 1280 case 'g': 1281 case 'G': 1282 if (flags & LONGDBL) 1283 ADDTYPE(T_LONG_DOUBLE); 1284 else 1285 ADDTYPE(T_DOUBLE); 1286 break; 1287 #endif /* FLOATING_POINT */ 1288 case 'n': 1289 if (flags & INTMAXT) 1290 ADDTYPE(TP_INTMAXT); 1291 else if (flags & PTRDIFFT) 1292 ADDTYPE(TP_PTRDIFFT); 1293 else if (flags & SIZET) 1294 ADDTYPE(TP_SIZET); 1295 else if (flags & LLONGINT) 1296 ADDTYPE(TP_LLONG); 1297 else if (flags & LONGINT) 1298 ADDTYPE(TP_LONG); 1299 else if (flags & SHORTINT) 1300 ADDTYPE(TP_SHORT); 1301 else if (flags & CHARINT) 1302 ADDTYPE(TP_SCHAR); 1303 else 1304 ADDTYPE(TP_INT); 1305 continue; /* no output */ 1306 case 'O': 1307 flags |= LONGINT; 1308 /*FALLTHROUGH*/ 1309 case 'o': 1310 ADDUARG(); 1311 break; 1312 case 'p': 1313 ADDTYPE(TP_VOID); 1314 break; 1315 case 's': 1316 if (flags & LONGINT) 1317 ADDTYPE(TP_WCHAR); 1318 else 1319 ADDTYPE(TP_CHAR); 1320 break; 1321 case 'U': 1322 flags |= LONGINT; 1323 /*FALLTHROUGH*/ 1324 case 'u': 1325 case 'X': 1326 case 'x': 1327 ADDUARG(); 1328 break; 1329 default: /* "%?" prints ?, unless ? is NUL */ 1330 if (ch == '\0') 1331 goto done; 1332 break; 1333 } 1334 } 1335 done: 1336 /* 1337 * Build the argument table. 1338 */ 1339 if (tablemax >= STATIC_ARG_TBL_SIZE) { 1340 *argtable = (union arg *) 1341 malloc (sizeof (union arg) * (tablemax + 1)); 1342 } 1343 1344 (*argtable) [0].intarg = 0; 1345 for (n = 1; n <= tablemax; n++) { 1346 switch (typetable [n]) { 1347 case T_UNUSED: /* whoops! */ 1348 (*argtable) [n].intarg = va_arg (ap, int); 1349 break; 1350 case TP_SCHAR: 1351 (*argtable) [n].pschararg = va_arg (ap, signed char *); 1352 break; 1353 case TP_SHORT: 1354 (*argtable) [n].pshortarg = va_arg (ap, short *); 1355 break; 1356 case T_INT: 1357 (*argtable) [n].intarg = va_arg (ap, int); 1358 break; 1359 case T_U_INT: 1360 (*argtable) [n].uintarg = va_arg (ap, unsigned int); 1361 break; 1362 case TP_INT: 1363 (*argtable) [n].pintarg = va_arg (ap, int *); 1364 break; 1365 case T_LONG: 1366 (*argtable) [n].longarg = va_arg (ap, long); 1367 break; 1368 case T_U_LONG: 1369 (*argtable) [n].ulongarg = va_arg (ap, unsigned long); 1370 break; 1371 case TP_LONG: 1372 (*argtable) [n].plongarg = va_arg (ap, long *); 1373 break; 1374 case T_LLONG: 1375 (*argtable) [n].longlongarg = va_arg (ap, long long); 1376 break; 1377 case T_U_LLONG: 1378 (*argtable) [n].ulonglongarg = va_arg (ap, unsigned long long); 1379 break; 1380 case TP_LLONG: 1381 (*argtable) [n].plonglongarg = va_arg (ap, long long *); 1382 break; 1383 case T_PTRDIFFT: 1384 (*argtable) [n].ptrdiffarg = va_arg (ap, ptrdiff_t); 1385 break; 1386 case TP_PTRDIFFT: 1387 (*argtable) [n].pptrdiffarg = va_arg (ap, ptrdiff_t *); 1388 break; 1389 case T_SIZET: 1390 (*argtable) [n].sizearg = va_arg (ap, size_t); 1391 break; 1392 case TP_SIZET: 1393 (*argtable) [n].psizearg = va_arg (ap, ssize_t *); 1394 break; 1395 case T_INTMAXT: 1396 (*argtable) [n].intmaxarg = va_arg (ap, intmax_t); 1397 break; 1398 case T_UINTMAXT: 1399 (*argtable) [n].uintmaxarg = va_arg (ap, uintmax_t); 1400 break; 1401 case TP_INTMAXT: 1402 (*argtable) [n].pintmaxarg = va_arg (ap, intmax_t *); 1403 break; 1404 #ifdef FLOATING_POINT 1405 case T_DOUBLE: 1406 (*argtable) [n].doublearg = va_arg (ap, double); 1407 break; 1408 case T_LONG_DOUBLE: 1409 (*argtable) [n].longdoublearg = va_arg (ap, long double); 1410 break; 1411 #endif 1412 case TP_CHAR: 1413 (*argtable) [n].pchararg = va_arg (ap, char *); 1414 break; 1415 case TP_VOID: 1416 (*argtable) [n].pvoidarg = va_arg (ap, void *); 1417 break; 1418 case T_WINT: 1419 (*argtable) [n].wintarg = va_arg (ap, wint_t); 1420 break; 1421 case TP_WCHAR: 1422 (*argtable) [n].pwchararg = va_arg (ap, wchar_t *); 1423 break; 1424 } 1425 } 1426 1427 if ((typetable != NULL) && (typetable != stattypetable)) 1428 free (typetable); 1429 } 1430 1431 /* 1432 * Increase the size of the type table. 1433 */ 1434 static void 1435 __grow_type_table (int nextarg, enum typeid **typetable, int *tablesize) 1436 { 1437 enum typeid *const oldtable = *typetable; 1438 const int oldsize = *tablesize; 1439 enum typeid *newtable; 1440 int newsize = oldsize * 2; 1441 1442 if (newsize < nextarg + 1) 1443 newsize = nextarg + 1; 1444 if (oldsize == STATIC_ARG_TBL_SIZE) { 1445 if ((newtable = malloc(newsize)) == NULL) 1446 abort(); /* XXX handle better */ 1447 bcopy(oldtable, newtable, oldsize); 1448 } else { 1449 if ((newtable = reallocf(oldtable, newsize)) == NULL) 1450 abort(); /* XXX handle better */ 1451 } 1452 memset(&newtable[oldsize], T_UNUSED, newsize - oldsize); 1453 1454 *typetable = newtable; 1455 *tablesize = newsize; 1456 } 1457 1458 1459 #ifdef FLOATING_POINT 1460 1461 extern char *__dtoa(double, int, int, int *, int *, char **, char **); 1462 1463 static wchar_t * 1464 cvt(double value, int ndigits, int flags, char *sign, int *decpt, 1465 wchar_t ch, int *length, wchar_t **dtoaresultp) 1466 { 1467 int i, mode, dsgn; 1468 wchar_t *digits, *bp, *result, *rve; 1469 char *tresult, *trve; 1470 1471 if (ch == 'f') 1472 mode = 3; /* ndigits after the decimal point */ 1473 else { 1474 /* 1475 * To obtain ndigits after the decimal point for the 'e' 1476 * and 'E' formats, round to ndigits + 1 significant 1477 * figures. 1478 */ 1479 if (ch == 'e' || ch == 'E') 1480 ndigits++; 1481 mode = 2; /* ndigits significant digits */ 1482 } 1483 __dtoa(value, mode, ndigits, decpt, &dsgn, &trve, &tresult); 1484 if ((result = malloc((trve - tresult + 1) * sizeof(*result))) == NULL) 1485 abort(); /* XXX handle better */ 1486 for (i = 0; i < trve - tresult + 1; i++) 1487 result[i] = (wchar_t)(unsigned char)tresult[i]; 1488 rve = result + (trve - tresult); 1489 free(tresult); 1490 *dtoaresultp = result; 1491 digits = result; 1492 *sign = dsgn != 0; 1493 if ((ch != 'g' && ch != 'G') || flags & ALT) { 1494 /* print trailing zeros */ 1495 bp = digits + ndigits; 1496 if (ch == 'f') { 1497 if (*digits == '0' && value) 1498 *decpt = -ndigits + 1; 1499 bp += *decpt; 1500 } 1501 if (value == 0) /* kludge for __dtoa irregularity */ 1502 rve = bp; 1503 while (rve < bp) 1504 *rve++ = '0'; 1505 } 1506 *length = rve - digits; 1507 return (digits); 1508 } 1509 1510 static int 1511 exponent(wchar_t *p0, int exp, wchar_t fmtch) 1512 { 1513 wchar_t *p, *t; 1514 wchar_t expbuf[MAXEXP]; 1515 1516 p = p0; 1517 *p++ = fmtch; 1518 if (exp < 0) { 1519 exp = -exp; 1520 *p++ = '-'; 1521 } 1522 else 1523 *p++ = '+'; 1524 t = expbuf + MAXEXP; 1525 if (exp > 9) { 1526 do { 1527 *--t = to_char(exp % 10); 1528 } while ((exp /= 10) > 9); 1529 *--t = to_char(exp); 1530 for (; t < expbuf + MAXEXP; *p++ = *t++); 1531 } 1532 else { 1533 *p++ = '0'; 1534 *p++ = to_char(exp); 1535 } 1536 return (p - p0); 1537 } 1538 #endif /* FLOATING_POINT */ 1539