2 * Copyright (c) 1990, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
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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
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33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 #if defined(LIBC_SCCS) && !defined(lint)
39 static char sccsid[] = "@(#)vfprintf.c 8.1 (Berkeley) 6/4/93";
40 #endif /* LIBC_SCCS and not lint */
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD$");
46 * Actual wprintf innards.
48 * Avoid making gratuitous changes to this source file; it should be kept
49 * as close as possible to vfprintf.c for ease of maintenance.
52 #include "namespace.h"
53 #include <sys/types.h>
66 #include "un-namespace.h"
68 #include "libc_private.h"
77 long long longlongarg;
78 unsigned long long ulonglongarg;
85 signed char *pschararg;
89 long long *plonglongarg;
90 ptrdiff_t *pptrdiffarg;
93 #ifndef NO_FLOATING_POINT
95 long double longdoublearg;
102 * Type ids for argument type table.
105 T_UNUSED, TP_SHORT, T_INT, T_U_INT, TP_INT,
106 T_LONG, T_U_LONG, TP_LONG, T_LLONG, T_U_LLONG, TP_LLONG,
107 T_PTRDIFFT, TP_PTRDIFFT, T_SIZET, TP_SIZET,
108 T_INTMAXT, T_UINTMAXT, TP_INTMAXT, TP_VOID, TP_CHAR, TP_SCHAR,
109 T_DOUBLE, T_LONG_DOUBLE, T_WINT, TP_WCHAR
112 static int __sbprintf(FILE *, const wchar_t *, va_list);
113 static wint_t __xfputwc(wchar_t, FILE *);
114 static wchar_t *__ujtoa(uintmax_t, wchar_t *, int, int, const char *, int,
116 static wchar_t *__ultoa(u_long, wchar_t *, int, int, const char *, int,
118 static wchar_t *__mbsconv(char *, int);
119 static void __find_arguments(const wchar_t *, va_list, union arg **);
120 static void __grow_type_table(int, enum typeid **, int *);
123 * Helper function for `fprintf to unbuffered unix file': creates a
124 * temporary buffer. We only work on write-only files; this avoids
125 * worries about ungetc buffers and so forth.
128 __sbprintf(FILE *fp, const wchar_t *fmt, va_list ap)
132 unsigned char buf[BUFSIZ];
134 /* copy the important variables */
135 fake._flags = fp->_flags & ~__SNBF;
136 fake._file = fp->_file;
137 fake._cookie = fp->_cookie;
138 fake._write = fp->_write;
139 fake._extra = fp->_extra;
141 /* set up the buffer */
142 fake._bf._base = fake._p = buf;
143 fake._bf._size = fake._w = sizeof(buf);
144 fake._lbfsize = 0; /* not actually used, but Just In Case */
146 /* do the work, then copy any error status */
147 ret = __vfwprintf(&fake, fmt, ap);
148 if (ret >= 0 && __fflush(&fake))
150 if (fake._flags & __SERR)
151 fp->_flags |= __SERR;
156 * Like __fputwc, but handles fake string (__SSTR) files properly.
157 * File must already be locked.
160 __xfputwc(wchar_t wc, FILE *fp)
162 static const mbstate_t initial;
164 char buf[MB_LEN_MAX];
169 if ((fp->_flags & __SSTR) == 0)
170 return (__fputwc(wc, fp));
173 if ((len = wcrtomb(buf, wc, &mbs)) == (size_t)-1) {
174 fp->_flags |= __SERR;
182 return (__sfvwrite(fp, &uio) != EOF ? (wint_t)wc : WEOF);
186 * Macros for converting digits to letters and vice versa
188 #define to_digit(c) ((c) - '0')
189 #define is_digit(c) ((unsigned)to_digit(c) <= 9)
190 #define to_char(n) ((n) + '0')
193 * Convert an unsigned long to ASCII for printf purposes, returning
194 * a pointer to the first character of the string representation.
195 * Octal numbers can be forced to have a leading zero; hex numbers
196 * use the given digits.
199 __ultoa(u_long val, wchar_t *endp, int base, int octzero, const char *xdigs,
200 int needgrp, char thousep, const char *grp)
207 * Handle the three cases separately, in the hope of getting
208 * better/faster code.
212 if (val < 10) { /* many numbers are 1 digit */
213 *--cp = to_char(val);
218 * On many machines, unsigned arithmetic is harder than
219 * signed arithmetic, so we do at most one unsigned mod and
220 * divide; this is sufficient to reduce the range of
221 * the incoming value to where signed arithmetic works.
223 if (val > LONG_MAX) {
224 *--cp = to_char(val % 10);
230 *--cp = to_char(sval % 10);
233 * If (*grp == CHAR_MAX) then no more grouping
234 * should be performed.
236 if (needgrp && ndig == *grp && *grp != CHAR_MAX
241 * If (*(grp+1) == '\0') then we have to
242 * use *grp character (last grouping rule)
245 if (*(grp+1) != '\0')
254 *--cp = to_char(val & 7);
257 if (octzero && *cp != '0')
263 *--cp = xdigs[val & 15];
274 /* Identical to __ultoa, but for intmax_t. */
276 __ujtoa(uintmax_t val, wchar_t *endp, int base, int octzero,
277 const char *xdigs, int needgrp, char thousep, const char *grp)
283 /* quick test for small values; __ultoa is typically much faster */
284 /* (perhaps instead we should run until small, then call __ultoa?) */
285 if (val <= ULONG_MAX)
286 return (__ultoa((u_long)val, endp, base, octzero, xdigs,
287 needgrp, thousep, grp));
291 *--cp = to_char(val % 10);
295 if (val > INTMAX_MAX) {
296 *--cp = to_char(val % 10);
302 *--cp = to_char(sval % 10);
305 * If (*grp == CHAR_MAX) then no more grouping
306 * should be performed.
308 if (needgrp && *grp != CHAR_MAX && ndig == *grp
313 * If (*(grp+1) == '\0') then we have to
314 * use *grp character (last grouping rule)
317 if (*(grp+1) != '\0')
326 *--cp = to_char(val & 7);
329 if (octzero && *cp != '0')
335 *--cp = xdigs[val & 15];
347 * Convert a multibyte character string argument for the %s format to a wide
348 * string representation. ``prec'' specifies the maximum number of bytes
349 * to output. If ``prec'' is greater than or equal to zero, we can't assume
350 * that the multibyte char. string ends in a null character.
353 __mbsconv(char *mbsarg, int prec)
355 static const mbstate_t initial;
357 wchar_t *convbuf, *wcp;
359 size_t insize, nchars, nconv;
365 * Supplied argument is a multibyte string; convert it to wide
370 * String is not guaranteed to be NUL-terminated. Find the
371 * number of characters to print.
376 while (nchars != (size_t)prec) {
377 nconv = mbrlen(p, MB_CUR_MAX, &mbs);
378 if (nconv == 0 || nconv == (size_t)-1 ||
385 if (nconv == (size_t)-1 || nconv == (size_t)-2)
388 insize = strlen(mbsarg);
391 * Allocate buffer for the result and perform the conversion,
392 * converting at most `size' bytes of the input multibyte string to
393 * wide characters for printing.
395 convbuf = malloc((insize + 1) * sizeof(*convbuf));
401 while (insize != 0) {
402 nconv = mbrtowc(wcp, p, insize, &mbs);
403 if (nconv == 0 || nconv == (size_t)-1 || nconv == (size_t)-2)
409 if (nconv == (size_t)-1 || nconv == (size_t)-2) {
422 vfwprintf(FILE * __restrict fp, const wchar_t * __restrict fmt0, va_list ap)
428 ret = __vfwprintf(fp, fmt0, ap);
433 #ifndef NO_FLOATING_POINT
436 #define freedtoa __freedtoa
445 static int exponent(wchar_t *, int, wchar_t);
447 #endif /* !NO_FLOATING_POINT */
450 * The size of the buffer we use as scratch space for integer
451 * conversions, among other things. Technically, we would need the
452 * most space for base 10 conversions with thousands' grouping
453 * characters between each pair of digits. 100 bytes is a
454 * conservative overestimate even for a 128-bit uintmax_t.
458 #define STATIC_ARG_TBL_SIZE 8 /* Size of static argument table. */
461 * Flags used during conversion.
463 #define ALT 0x001 /* alternate form */
464 #define LADJUST 0x004 /* left adjustment */
465 #define LONGDBL 0x008 /* long double */
466 #define LONGINT 0x010 /* long integer */
467 #define LLONGINT 0x020 /* long long integer */
468 #define SHORTINT 0x040 /* short integer */
469 #define ZEROPAD 0x080 /* zero (as opposed to blank) pad */
470 #define FPT 0x100 /* Floating point number */
471 #define GROUPING 0x200 /* use grouping ("'" flag) */
472 /* C99 additional size modifiers: */
473 #define SIZET 0x400 /* size_t */
474 #define PTRDIFFT 0x800 /* ptrdiff_t */
475 #define INTMAXT 0x1000 /* intmax_t */
476 #define CHARINT 0x2000 /* print char using int format */
479 * Non-MT-safe version
482 __vfwprintf(FILE *fp, const wchar_t *fmt0, va_list ap)
484 wchar_t *fmt; /* format string */
485 wchar_t ch; /* character from fmt */
486 int n, n2, n3; /* handy integer (short term usage) */
487 wchar_t *cp; /* handy char pointer (short term usage) */
488 int flags; /* flags as above */
489 int ret; /* return value accumulator */
490 int width; /* width from format (%8d), or 0 */
491 int prec; /* precision from format; <0 for N/A */
492 wchar_t sign; /* sign prefix (' ', '+', '-', or \0) */
493 char thousands_sep; /* locale specific thousands separator */
494 const char *grouping; /* locale specific numeric grouping rules */
495 #ifndef NO_FLOATING_POINT
497 * We can decompose the printed representation of floating
498 * point numbers into several parts, some of which may be empty:
500 * [+|-| ] [0x|0X] MMM . NNN [e|E|p|P] [+|-] ZZ
503 * A: 'sign' holds this value if present; '\0' otherwise
504 * B: ox[1] holds the 'x' or 'X'; '\0' if not hexadecimal
505 * C: cp points to the string MMMNNN. Leading and trailing
506 * zeros are not in the string and must be added.
507 * D: expchar holds this character; '\0' if no exponent, e.g. %f
508 * F: at least two digits for decimal, at least one digit for hex
510 char *decimal_point; /* locale specific decimal point */
511 int signflag; /* true if float is negative */
512 union { /* floating point arguments %[aAeEfFgG] */
516 int expt; /* integer value of exponent */
517 char expchar; /* exponent character: [eEpP\0] */
518 char *dtoaend; /* pointer to end of converted digits */
519 int expsize; /* character count for expstr */
520 int lead; /* sig figs before decimal or group sep */
521 int ndig; /* actual number of digits returned by dtoa */
522 wchar_t expstr[MAXEXPDIG+2]; /* buffer for exponent string: e+ZZZ */
523 char *dtoaresult; /* buffer allocated by dtoa */
524 int nseps; /* number of group separators with ' */
525 int nrepeats; /* number of repeats of the last group */
527 u_long ulval; /* integer arguments %[diouxX] */
528 uintmax_t ujval; /* %j, %ll, %q, %t, %z integers */
529 int base; /* base for [diouxX] conversion */
530 int dprec; /* a copy of prec if [diouxX], 0 otherwise */
531 int realsz; /* field size expanded by dprec, sign, etc */
532 int size; /* size of converted field or string */
533 int prsize; /* max size of printed field */
534 const char *xdigs; /* digits for [xX] conversion */
535 wchar_t buf[BUF]; /* buffer with space for digits of uintmax_t */
536 wchar_t ox[2]; /* space for 0x hex-prefix */
537 union arg *argtable; /* args, built due to positional arg */
538 union arg statargtable [STATIC_ARG_TBL_SIZE];
539 int nextarg; /* 1-based argument index */
540 va_list orgap; /* original argument pointer */
541 wchar_t *convbuf; /* multibyte to wide conversion result */
544 * Choose PADSIZE to trade efficiency vs. size. If larger printf
545 * fields occur frequently, increase PADSIZE and make the initialisers
548 #define PADSIZE 16 /* pad chunk size */
549 static wchar_t blanks[PADSIZE] =
550 {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
551 static wchar_t zeroes[PADSIZE] =
552 {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};
554 static const char xdigs_lower[16] = "0123456789abcdef";
555 static const char xdigs_upper[16] = "0123456789ABCDEF";
558 * BEWARE, these `goto error' on error, PRINT uses `n2' and
561 #define PRINT(ptr, len) do { \
562 for (n3 = 0; n3 < (len); n3++) \
563 __xfputwc((ptr)[n3], fp); \
565 #define PAD(howmany, with) do { \
566 if ((n = (howmany)) > 0) { \
567 while (n > PADSIZE) { \
568 PRINT(with, PADSIZE); \
574 #define PRINTANDPAD(p, ep, len, with) do { \
580 PAD((len) - (n2 > 0 ? n2 : 0), (with)); \
584 * Get the argument indexed by nextarg. If the argument table is
585 * built, use it to get the argument. If its not, get the next
586 * argument (and arguments must be gotten sequentially).
588 #define GETARG(type) \
589 ((argtable != NULL) ? *((type*)(&argtable[nextarg++])) : \
590 (nextarg++, va_arg(ap, type)))
593 * To extend shorts properly, we need both signed and unsigned
594 * argument extraction methods.
597 (flags&LONGINT ? GETARG(long) : \
598 flags&SHORTINT ? (long)(short)GETARG(int) : \
599 flags&CHARINT ? (long)(signed char)GETARG(int) : \
602 (flags&LONGINT ? GETARG(u_long) : \
603 flags&SHORTINT ? (u_long)(u_short)GETARG(int) : \
604 flags&CHARINT ? (u_long)(u_char)GETARG(int) : \
605 (u_long)GETARG(u_int))
606 #define INTMAX_SIZE (INTMAXT|SIZET|PTRDIFFT|LLONGINT)
608 (flags&INTMAXT ? GETARG(intmax_t) : \
609 flags&SIZET ? (intmax_t)GETARG(size_t) : \
610 flags&PTRDIFFT ? (intmax_t)GETARG(ptrdiff_t) : \
611 (intmax_t)GETARG(long long))
613 (flags&INTMAXT ? GETARG(uintmax_t) : \
614 flags&SIZET ? (uintmax_t)GETARG(size_t) : \
615 flags&PTRDIFFT ? (uintmax_t)GETARG(ptrdiff_t) : \
616 (uintmax_t)GETARG(unsigned long long))
619 * Get * arguments, including the form *nn$. Preserve the nextarg
620 * that the argument can be gotten once the type is determined.
622 #define GETASTER(val) \
625 while (is_digit(*cp)) { \
626 n2 = 10 * n2 + to_digit(*cp); \
630 int hold = nextarg; \
631 if (argtable == NULL) { \
632 argtable = statargtable; \
633 __find_arguments (fmt0, orgap, &argtable); \
636 val = GETARG (int); \
640 val = GETARG (int); \
644 thousands_sep = '\0';
646 #ifndef NO_FLOATING_POINT
647 decimal_point = localeconv()->decimal_point;
650 /* sorry, fwprintf(read_only_file, L"") returns WEOF, not 0 */
651 if (prepwrite(fp) != 0)
654 /* optimise fprintf(stderr) (and other unbuffered Unix files) */
655 if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) &&
657 return (__sbprintf(fp, fmt0, ap));
659 fmt = (wchar_t *)fmt0;
666 * Scan the format for conversions (`%' character).
669 for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++)
671 if ((n = fmt - cp) != 0) {
672 if ((unsigned)ret + n > INT_MAX) {
681 fmt++; /* skip over '%' */
691 reswitch: switch (ch) {
694 * ``If the space and + flags both appear, the space
695 * flag will be ignored.''
706 * ``A negative field width argument is taken as a
707 * - flag followed by a positive field width.''
709 * They don't exclude field widths read from args.
724 thousands_sep = *(localeconv()->thousands_sep);
725 grouping = localeconv()->grouping;
728 if ((ch = *fmt++) == '*') {
733 while (is_digit(ch)) {
734 prec = 10 * prec + to_digit(ch);
740 * ``Note that 0 is taken as a flag, not as the
741 * beginning of a field width.''
746 case '1': case '2': case '3': case '4':
747 case '5': case '6': case '7': case '8': case '9':
750 n = 10 * n + to_digit(ch);
752 } while (is_digit(ch));
755 if (argtable == NULL) {
756 argtable = statargtable;
757 __find_arguments (fmt0, orgap,
764 #ifndef NO_FLOATING_POINT
770 if (flags & SHORTINT) {
780 if (flags & LONGINT) {
787 flags |= LLONGINT; /* not necessarily */
800 *(cp = buf) = (wchar_t)GETARG(wint_t);
802 *(cp = buf) = (wchar_t)btowc(GETARG(int));
811 if (flags & INTMAX_SIZE) {
813 if ((intmax_t)ujval < 0) {
819 if ((long)ulval < 0) {
826 #ifndef NO_FLOATING_POINT
840 if (flags & LONGDBL) {
841 fparg.ldbl = GETARG(long double);
843 __hldtoa(fparg.ldbl, xdigs, prec,
844 &expt, &signflag, &dtoaend);
846 fparg.dbl = GETARG(double);
848 __hdtoa(fparg.dbl, xdigs, prec,
849 &expt, &signflag, &dtoaend);
852 prec = dtoaend - dtoaresult;
857 ndig = dtoaend - dtoaresult;
858 cp = convbuf = __mbsconv(dtoaresult, -1);
859 freedtoa(dtoaresult);
864 if (prec < 0) /* account for digit before decpt */
875 expchar = ch - ('g' - 'e');
883 if (flags & LONGDBL) {
884 fparg.ldbl = GETARG(long double);
886 __ldtoa(&fparg.ldbl, expchar ? 2 : 3, prec,
887 &expt, &signflag, &dtoaend);
889 fparg.dbl = GETARG(double);
891 dtoa(fparg.dbl, expchar ? 2 : 3, prec,
892 &expt, &signflag, &dtoaend);
896 ndig = dtoaend - dtoaresult;
897 cp = convbuf = __mbsconv(dtoaresult, -1);
898 freedtoa(dtoaresult);
902 if (expt == INT_MAX) { /* inf or nan */
904 cp = (ch >= 'a') ? L"nan" : L"NAN";
907 cp = (ch >= 'a') ? L"inf" : L"INF";
912 if (ch == 'g' || ch == 'G') {
913 if (expt > -4 && expt <= prec) {
914 /* Make %[gG] smell like %[fF] */
924 * Make %[gG] smell like %[eE], but
925 * trim trailing zeroes if no # flag.
932 expsize = exponent(expstr, expt - 1, expchar);
933 size = expsize + prec;
934 if (prec > 1 || flags & ALT)
937 /* space for digits before decimal point */
942 /* space for decimal pt and following digits */
943 if (prec || flags & ALT)
945 if (grouping && expt > 0) {
946 /* space for thousands' grouping */
947 nseps = nrepeats = 0;
949 while (*grouping != CHAR_MAX) {
950 if (lead <= *grouping)
959 size += nseps + nrepeats;
964 #endif /* !NO_FLOATING_POINT */
967 * Assignment-like behavior is specified if the
968 * value overflows or is otherwise unrepresentable.
969 * C99 says to use `signed char' for %hhn conversions.
971 if (flags & LLONGINT)
972 *GETARG(long long *) = ret;
973 else if (flags & SIZET)
974 *GETARG(ssize_t *) = (ssize_t)ret;
975 else if (flags & PTRDIFFT)
976 *GETARG(ptrdiff_t *) = ret;
977 else if (flags & INTMAXT)
978 *GETARG(intmax_t *) = ret;
979 else if (flags & LONGINT)
980 *GETARG(long *) = ret;
981 else if (flags & SHORTINT)
982 *GETARG(short *) = ret;
983 else if (flags & CHARINT)
984 *GETARG(signed char *) = ret;
986 *GETARG(int *) = ret;
987 continue; /* no output */
992 if (flags & INTMAX_SIZE)
1000 * ``The argument shall be a pointer to void. The
1001 * value of the pointer is converted to a sequence
1002 * of printable characters, in an implementation-
1006 ujval = (uintmax_t)(uintptr_t)GETARG(void *);
1008 xdigs = xdigs_lower;
1009 flags = flags | INTMAXT;
1016 if (flags & LONGINT) {
1017 if ((cp = GETARG(wchar_t *)) == NULL)
1022 if (convbuf != NULL)
1024 if ((mbp = GETARG(char *)) == NULL)
1027 convbuf = __mbsconv(mbp, prec);
1028 if (convbuf == NULL) {
1029 fp->_flags |= __SERR;
1038 * can't use wcslen; can only look for the
1039 * NUL in the first `prec' characters, and
1040 * wcslen() will go further.
1042 wchar_t *p = wmemchr(cp, 0, (size_t)prec);
1058 if (flags & INTMAX_SIZE)
1065 xdigs = xdigs_upper;
1068 xdigs = xdigs_lower;
1070 if (flags & INTMAX_SIZE)
1075 /* leading 0x/X only if non-zero */
1077 (flags & INTMAX_SIZE ? ujval != 0 : ulval != 0))
1081 /* unsigned conversions */
1082 nosign: sign = '\0';
1084 * ``... diouXx conversions ... if a precision is
1085 * specified, the 0 flag will be ignored.''
1088 number: if ((dprec = prec) >= 0)
1092 * ``The result of converting a zero value with an
1093 * explicit precision of zero is no characters.''
1096 * ``The C Standard is clear enough as is. The call
1097 * printf("%#.0o", 0) should print 0.''
1098 * -- Defect Report #151
1101 if (flags & INTMAX_SIZE) {
1102 if (ujval != 0 || prec != 0 ||
1103 (flags & ALT && base == 8))
1104 cp = __ujtoa(ujval, cp, base,
1106 flags & GROUPING, thousands_sep,
1109 if (ulval != 0 || prec != 0 ||
1110 (flags & ALT && base == 8))
1111 cp = __ultoa(ulval, cp, base,
1113 flags & GROUPING, thousands_sep,
1116 size = buf + BUF - cp;
1117 if (size > BUF) /* should never happen */
1120 default: /* "%?" prints ?, unless ? is NUL */
1123 /* pretend it was %c with argument ch */
1132 * All reasonable formats wind up here. At this point, `cp'
1133 * points to a string which (if not flags&LADJUST) should be
1134 * padded out to `width' places. If flags&ZEROPAD, it should
1135 * first be prefixed by any sign or other prefix; otherwise,
1136 * it should be blank padded before the prefix is emitted.
1137 * After any left-hand padding and prefixing, emit zeroes
1138 * required by a decimal [diouxX] precision, then print the
1139 * string proper, then emit zeroes required by any leftover
1140 * floating precision; finally, if LADJUST, pad with blanks.
1142 * Compute actual size, so we know how much to pad.
1143 * size excludes decimal prec; realsz includes it.
1145 realsz = dprec > size ? dprec : size;
1151 prsize = width > realsz ? width : realsz;
1152 if ((unsigned)ret + prsize > INT_MAX) {
1157 /* right-adjusting blank padding */
1158 if ((flags & (LADJUST|ZEROPAD)) == 0)
1159 PAD(width - realsz, blanks);
1165 if (ox[1]) { /* ox[1] is either x, X, or \0 */
1170 /* right-adjusting zero padding */
1171 if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD)
1172 PAD(width - realsz, zeroes);
1174 /* leading zeroes from decimal precision */
1175 PAD(dprec - size, zeroes);
1177 /* the string or number proper */
1178 #ifndef NO_FLOATING_POINT
1179 if ((flags & FPT) == 0) {
1181 } else { /* glue together f_p fragments */
1182 if (!expchar) { /* %[fF] or sufficiently short %[gG] */
1185 if (prec || flags & ALT)
1186 PRINT(decimal_point, 1);
1188 /* already handled initial 0's */
1191 PRINTANDPAD(cp, convbuf + ndig, lead, zeroes);
1194 while (nseps>0 || nrepeats>0) {
1201 PRINT(&thousands_sep,
1208 if (cp > convbuf + ndig)
1209 cp = convbuf + ndig;
1211 if (prec || flags & ALT) {
1212 buf[0] = *decimal_point;
1216 PRINTANDPAD(cp, convbuf + ndig, prec, zeroes);
1217 } else { /* %[eE] or sufficiently long %[gG] */
1218 if (prec > 1 || flags & ALT) {
1220 buf[1] = *decimal_point;
1223 PAD(prec - ndig, zeroes);
1226 PRINT(expstr, expsize);
1232 /* left-adjusting padding (always blank) */
1233 if (flags & LADJUST)
1234 PAD(width - realsz, blanks);
1236 /* finally, adjust ret */
1242 if (convbuf != NULL)
1246 if ((argtable != NULL) && (argtable != statargtable))
1253 * Find all arguments when a positional parameter is encountered. Returns a
1254 * table, indexed by argument number, of pointers to each arguments. The
1255 * initial argument table should be an array of STATIC_ARG_TBL_SIZE entries.
1256 * It will be replaces with a malloc-ed one if it overflows.
1259 __find_arguments (const wchar_t *fmt0, va_list ap, union arg **argtable)
1261 wchar_t *fmt; /* format string */
1262 wchar_t ch; /* character from fmt */
1263 int n, n2; /* handy integer (short term usage) */
1264 wchar_t *cp; /* handy char pointer (short term usage) */
1265 int flags; /* flags as above */
1266 int width; /* width from format (%8d), or 0 */
1267 enum typeid *typetable; /* table of types */
1268 enum typeid stattypetable [STATIC_ARG_TBL_SIZE];
1269 int tablesize; /* current size of type table */
1270 int tablemax; /* largest used index in table */
1271 int nextarg; /* 1-based argument index */
1274 * Add an argument type to the table, expanding if necessary.
1276 #define ADDTYPE(type) \
1277 ((nextarg >= tablesize) ? \
1278 __grow_type_table(nextarg, &typetable, &tablesize) : (void)0, \
1279 (nextarg > tablemax) ? tablemax = nextarg : 0, \
1280 typetable[nextarg++] = type)
1283 ((flags&INTMAXT) ? ADDTYPE(T_INTMAXT) : \
1284 ((flags&SIZET) ? ADDTYPE(T_SIZET) : \
1285 ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \
1286 ((flags&LLONGINT) ? ADDTYPE(T_LLONG) : \
1287 ((flags&LONGINT) ? ADDTYPE(T_LONG) : ADDTYPE(T_INT))))))
1290 ((flags&INTMAXT) ? ADDTYPE(T_UINTMAXT) : \
1291 ((flags&SIZET) ? ADDTYPE(T_SIZET) : \
1292 ((flags&PTRDIFFT) ? ADDTYPE(T_PTRDIFFT) : \
1293 ((flags&LLONGINT) ? ADDTYPE(T_U_LLONG) : \
1294 ((flags&LONGINT) ? ADDTYPE(T_U_LONG) : ADDTYPE(T_U_INT))))))
1297 * Add * arguments to the type array.
1299 #define ADDASTER() \
1302 while (is_digit(*cp)) { \
1303 n2 = 10 * n2 + to_digit(*cp); \
1307 int hold = nextarg; \
1315 fmt = (wchar_t *)fmt0;
1316 typetable = stattypetable;
1317 tablesize = STATIC_ARG_TBL_SIZE;
1320 for (n = 0; n < STATIC_ARG_TBL_SIZE; n++)
1321 typetable[n] = T_UNUSED;
1324 * Scan the format for conversions (`%' character).
1327 for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++)
1331 fmt++; /* skip over '%' */
1337 reswitch: switch (ch) {
1349 if ((ch = *fmt++) == '*') {
1353 while (is_digit(ch)) {
1359 case '1': case '2': case '3': case '4':
1360 case '5': case '6': case '7': case '8': case '9':
1363 n = 10 * n + to_digit(ch);
1365 } while (is_digit(ch));
1372 #ifndef NO_FLOATING_POINT
1378 if (flags & SHORTINT) {
1388 if (flags & LONGINT) {
1395 flags |= LLONGINT; /* not necessarily */
1407 if (flags & LONGINT)
1419 #ifndef NO_FLOATING_POINT
1427 if (flags & LONGDBL)
1428 ADDTYPE(T_LONG_DOUBLE);
1432 #endif /* !NO_FLOATING_POINT */
1434 if (flags & INTMAXT)
1435 ADDTYPE(TP_INTMAXT);
1436 else if (flags & PTRDIFFT)
1437 ADDTYPE(TP_PTRDIFFT);
1438 else if (flags & SIZET)
1440 else if (flags & LLONGINT)
1442 else if (flags & LONGINT)
1444 else if (flags & SHORTINT)
1446 else if (flags & CHARINT)
1450 continue; /* no output */
1464 if (flags & LONGINT)
1477 default: /* "%?" prints ?, unless ? is NUL */
1485 * Build the argument table.
1487 if (tablemax >= STATIC_ARG_TBL_SIZE) {
1488 *argtable = (union arg *)
1489 malloc (sizeof (union arg) * (tablemax + 1));
1492 (*argtable) [0].intarg = 0;
1493 for (n = 1; n <= tablemax; n++) {
1494 switch (typetable [n]) {
1495 case T_UNUSED: /* whoops! */
1496 (*argtable) [n].intarg = va_arg (ap, int);
1499 (*argtable) [n].pschararg = va_arg (ap, signed char *);
1502 (*argtable) [n].pshortarg = va_arg (ap, short *);
1505 (*argtable) [n].intarg = va_arg (ap, int);
1508 (*argtable) [n].uintarg = va_arg (ap, unsigned int);
1511 (*argtable) [n].pintarg = va_arg (ap, int *);
1514 (*argtable) [n].longarg = va_arg (ap, long);
1517 (*argtable) [n].ulongarg = va_arg (ap, unsigned long);
1520 (*argtable) [n].plongarg = va_arg (ap, long *);
1523 (*argtable) [n].longlongarg = va_arg (ap, long long);
1526 (*argtable) [n].ulonglongarg = va_arg (ap, unsigned long long);
1529 (*argtable) [n].plonglongarg = va_arg (ap, long long *);
1532 (*argtable) [n].ptrdiffarg = va_arg (ap, ptrdiff_t);
1535 (*argtable) [n].pptrdiffarg = va_arg (ap, ptrdiff_t *);
1538 (*argtable) [n].sizearg = va_arg (ap, size_t);
1541 (*argtable) [n].psizearg = va_arg (ap, ssize_t *);
1544 (*argtable) [n].intmaxarg = va_arg (ap, intmax_t);
1547 (*argtable) [n].uintmaxarg = va_arg (ap, uintmax_t);
1550 (*argtable) [n].pintmaxarg = va_arg (ap, intmax_t *);
1552 #ifndef NO_FLOATING_POINT
1554 (*argtable) [n].doublearg = va_arg (ap, double);
1557 (*argtable) [n].longdoublearg = va_arg (ap, long double);
1561 (*argtable) [n].pchararg = va_arg (ap, char *);
1564 (*argtable) [n].pvoidarg = va_arg (ap, void *);
1567 (*argtable) [n].wintarg = va_arg (ap, wint_t);
1570 (*argtable) [n].pwchararg = va_arg (ap, wchar_t *);
1575 if ((typetable != NULL) && (typetable != stattypetable))
1580 * Increase the size of the type table.
1583 __grow_type_table (int nextarg, enum typeid **typetable, int *tablesize)
1585 enum typeid *const oldtable = *typetable;
1586 const int oldsize = *tablesize;
1587 enum typeid *newtable;
1588 int n, newsize = oldsize * 2;
1590 if (newsize < nextarg + 1)
1591 newsize = nextarg + 1;
1592 if (oldsize == STATIC_ARG_TBL_SIZE) {
1593 if ((newtable = malloc(newsize * sizeof(enum typeid))) == NULL)
1594 abort(); /* XXX handle better */
1595 bcopy(oldtable, newtable, oldsize * sizeof(enum typeid));
1597 newtable = reallocf(oldtable, newsize * sizeof(enum typeid));
1598 if (newtable == NULL)
1599 abort(); /* XXX handle better */
1601 for (n = oldsize; n < newsize; n++)
1602 newtable[n] = T_UNUSED;
1604 *typetable = newtable;
1605 *tablesize = newsize;
1609 #ifndef NO_FLOATING_POINT
1612 exponent(wchar_t *p0, int exp, wchar_t fmtch)
1615 wchar_t expbuf[MAXEXPDIG];
1625 t = expbuf + MAXEXPDIG;
1628 *--t = to_char(exp % 10);
1629 } while ((exp /= 10) > 9);
1630 *--t = to_char(exp);
1631 for (; t < expbuf + MAXEXPDIG; *p++ = *t++);
1635 * Exponents for decimal floating point conversions
1636 * (%[eEgG]) must be at least two characters long,
1637 * whereas exponents for hexadecimal conversions can
1638 * be only one character long.
1640 if (fmtch == 'e' || fmtch == 'E')
1642 *p++ = to_char(exp);
1646 #endif /* !NO_FLOATING_POINT */