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Diffstat (limited to 'newlib/libc/stdio/vfwprintf.c')
| -rw-r--r-- | newlib/libc/stdio/vfwprintf.c | 1777 |
1 files changed, 1777 insertions, 0 deletions
diff --git a/newlib/libc/stdio/vfwprintf.c b/newlib/libc/stdio/vfwprintf.c new file mode 100644 index 000000000..991a2d52f --- /dev/null +++ b/newlib/libc/stdio/vfwprintf.c @@ -0,0 +1,1777 @@ +/* + * Copyright (c) 1990 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Chris Torek. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* +FUNCTION +<<vfwprintf>>, <<vwprintf>>, <<vswprintf>>---wide character format argument list + +INDEX + vfwprintf +INDEX + _vfwprintf_r +INDEX + vwprintf +INDEX + _vwprintf_r +INDEX + vswprintf +INDEX + _vswprintf_r + +ANSI_SYNOPSIS + #include <stdio.h> + #include <stdarg.h> + int vwprintf(const wchar_t *<[fmt]>, va_list <[list]>); + int vfwprintf(FILE *<[fp]>, const wchar_t *<[fmt]>, va_list <[list]>); + int vswprintf(wchar_t *<[str]>, const wchar_t *<[fmt]>, + va_list <[list]>); + + int _vwprintf_r(struct _reent *<[reent]>, const wchar_t *<[fmt]>, + va_list <[list]>); + int _vfwprintf_r(struct _reent *<[reent]>, FILE *<[fp]>, + const wchar_t *<[fmt]>, va_list <[list]>); + int _vswprintf_r(struct _reent *<[reent]>, wchar_t *<[str]>, + const wchar_t *<[fmt]>, va_list <[list]>); + +DESCRIPTION +<<vwprintf>>, <<vfwprintf>> and <<vswprintf>> are (respectively) variants +of <<wprintf>>, <<fwprintf>> and <<swprintf>>. They differ only in allowing +their caller to pass the variable argument list as a <<va_list>> object +(initialized by <<va_start>>) rather than directly accepting a variable +number of arguments. The caller is responsible for calling <<va_end>>. + +<<_vwprintf_r>>, <<_vfwprintf_r>> and <<_vswprintf_r>> are reentrant +versions of the above. + +RETURNS +The return values are consistent with the corresponding functions. + +PORTABILITY +POSIX-1.2008 + +Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>, +<<lseek>>, <<read>>, <<sbrk>>, <<write>>. +*/ + +/* + * Actual wprintf innards. + * + * This code is large and complicated... + */ +#include <newlib.h> + +#ifdef INTEGER_ONLY +# define VFWPRINTF vfiwprintf +# ifdef STRING_ONLY +# define _VFWPRINTF_R _svfiwprintf_r +# else +# define _VFWPRINTF_R _vfiwprintf_r +# endif +#else +# define VFWPRINTF vfwprintf +# ifdef STRING_ONLY +# define _VFWPRINTF_R _svfwprintf_r +# else +# define _VFWPRINTF_R _vfwprintf_r +# endif +# ifndef NO_FLOATING_POINT +# define FLOATING_POINT +# endif +#endif + +#define _NO_POS_ARGS +#ifdef _WANT_IO_POS_ARGS +# undef _NO_POS_ARGS +#endif + +#include <_ansi.h> +#include <reent.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <limits.h> +#include <stdint.h> +#include <wchar.h> +#include <sys/lock.h> +#include <stdarg.h> +#include "local.h" +#include "fvwrite.h" +#include "vfieeefp.h" + +/* Currently a test is made to see if long double processing is warranted. + This could be changed in the future should the _ldtoa_r code be + preferred over _dtoa_r. */ +#define _NO_LONGDBL +#if defined _WANT_IO_LONG_DOUBLE && (LDBL_MANT_DIG > DBL_MANT_DIG) +#undef _NO_LONGDBL +#endif + +#define _NO_LONGLONG +#if defined _WANT_IO_LONG_LONG \ + && (defined __GNUC__ || __STDC_VERSION__ >= 199901L) +# undef _NO_LONGLONG +#endif + +int _EXFUN(_VFWPRINTF_R, (struct _reent *, FILE *, _CONST wchar_t *, va_list)); +/* Defined in vfprintf.c. */ +#ifdef STRING_ONLY +#define __SPRINT __ssprint_r +#else +#define __SPRINT __sprint_r +#endif +int _EXFUN(__SPRINT, (struct _reent *, FILE *, register struct __suio *)); + +#ifndef STRING_ONLY +/* + * Helper function for `fprintf to unbuffered unix file': creates a + * temporary buffer. We only work on write-only files; this avoids + * worries about ungetc buffers and so forth. + */ +static int +_DEFUN(__sbwprintf, (rptr, fp, fmt, ap), + struct _reent *rptr _AND + register FILE *fp _AND + _CONST wchar_t *fmt _AND + va_list ap) +{ + int ret; + FILE fake; + unsigned char buf[BUFSIZ]; + + /* copy the important variables */ + fake._flags = fp->_flags & ~__SNBF; + fake._flags2 = fp->_flags2; + fake._file = fp->_file; + fake._cookie = fp->_cookie; + fake._write = fp->_write; + + /* set up the buffer */ + fake._bf._base = fake._p = buf; + fake._bf._size = fake._w = sizeof (buf); + fake._lbfsize = 0; /* not actually used, but Just In Case */ +#ifndef __SINGLE_THREAD__ + __lock_init_recursive (fake._lock); +#endif + + /* do the work, then copy any error status */ + ret = _VFWPRINTF_R (rptr, &fake, fmt, ap); + if (ret >= 0 && _fflush_r (rptr, &fake)) + ret = EOF; + if (fake._flags & __SERR) + fp->_flags |= __SERR; + +#ifndef __SINGLE_THREAD__ + __lock_close_recursive (fake._lock); +#endif + return (ret); +} +#endif /* !STRING_ONLY */ + + +#ifdef FLOATING_POINT +# include <locale.h> +# include <math.h> + +/* For %La, an exponent of 15 bits occupies the exponent character, a + sign, and up to 5 digits. */ +# define MAXEXPLEN 7 +# define DEFPREC 6 + +# ifdef _NO_LONGDBL + +extern char *_dtoa_r _PARAMS((struct _reent *, double, int, + int, int *, int *, char **)); + +# define _PRINTF_FLOAT_TYPE double +# define _DTOA_R _dtoa_r +# define FREXP frexp + +# else /* !_NO_LONGDBL */ + +extern char *_ldtoa_r _PARAMS((struct _reent *, _LONG_DOUBLE, int, + int, int *, int *, char **)); + +extern int _EXFUN(_ldcheck,(_LONG_DOUBLE *)); + +# define _PRINTF_FLOAT_TYPE _LONG_DOUBLE +# define _DTOA_R _ldtoa_r +/* FIXME - frexpl is not yet supported; and cvt infloops if (double)f + converts a finite value into infinity. */ +/* # define FREXP frexpl */ +# define FREXP(f,e) ((_LONG_DOUBLE) frexp ((double)f, e)) +# endif /* !_NO_LONGDBL */ + +static wchar_t *wcvt(struct _reent *, _PRINTF_FLOAT_TYPE, int, int, wchar_t *, + int *, int, int *, wchar_t *); + +static int wexponent(wchar_t *, int, int); + +#endif /* FLOATING_POINT */ + +/* BUF must be big enough for the maximum %#llo (assuming long long is + at most 64 bits, this would be 23 characters), the maximum + multibyte character %C, and the maximum default precision of %La + (assuming long double is at most 128 bits with 113 bits of + mantissa, this would be 29 characters). %e, %f, and %g use + reentrant storage shared with mprec. All other formats that use + buf get by with fewer characters. Making BUF slightly bigger + reduces the need for malloc in %.*a and %S, when large precision or + long strings are processed. */ +#define BUF 40 +#if defined _MB_CAPABLE && MB_LEN_MAX > BUF +# undef BUF +# define BUF MB_LEN_MAX +#endif + +#ifndef _NO_LONGLONG +# define quad_t long long +# define u_quad_t unsigned long long +#else +# define quad_t long +# define u_quad_t unsigned long +#endif + +typedef quad_t * quad_ptr_t; +typedef _PTR void_ptr_t; +typedef char * char_ptr_t; +typedef wchar_t* wchar_ptr_t; +typedef long * long_ptr_t; +typedef int * int_ptr_t; +typedef short * short_ptr_t; + +#ifndef _NO_POS_ARGS +# ifdef NL_ARGMAX +# define MAX_POS_ARGS NL_ARGMAX +# else +# define MAX_POS_ARGS 32 +# endif + +union arg_val +{ + int val_int; + u_int val_u_int; + long val_long; + u_long val_u_long; + float val_float; + double val_double; + _LONG_DOUBLE val__LONG_DOUBLE; + int_ptr_t val_int_ptr_t; + short_ptr_t val_short_ptr_t; + long_ptr_t val_long_ptr_t; + char_ptr_t val_char_ptr_t; + wchar_ptr_t val_wchar_ptr_t; + quad_ptr_t val_quad_ptr_t; + void_ptr_t val_void_ptr_t; + quad_t val_quad_t; + u_quad_t val_u_quad_t; + wint_t val_wint_t; +}; + +static union arg_val * +_EXFUN(get_arg, (struct _reent *data, int n, wchar_t *fmt, + va_list *ap, int *numargs, union arg_val *args, + int *arg_type, wchar_t **last_fmt)); +#endif /* !_NO_POS_ARGS */ + +/* + * Macros for converting digits to letters and vice versa + */ +#define to_digit(c) ((c) - L'0') +#define is_digit(c) ((unsigned)to_digit (c) <= 9) +#define to_char(n) ((n) + L'0') + +/* + * Flags used during conversion. + */ +#define ALT 0x001 /* alternate form */ +#define HEXPREFIX 0x002 /* add 0x or 0X prefix */ +#define LADJUST 0x004 /* left adjustment */ +#define LONGDBL 0x008 /* long double */ +#define LONGINT 0x010 /* long integer */ +#ifndef _NO_LONGLONG +# define QUADINT 0x020 /* quad integer */ +#else /* ifdef _NO_LONGLONG, make QUADINT equivalent to LONGINT, so + that %lld behaves the same as %ld, not as %d, as expected if: + sizeof (long long) = sizeof long > sizeof int */ +# define QUADINT LONGINT +#endif +#define SHORTINT 0x040 /* short integer */ +#define ZEROPAD 0x080 /* zero (as opposed to blank) pad */ +#define FPT 0x100 /* Floating point number */ +#ifdef _WANT_IO_C99_FORMATS +# define CHARINT 0x200 /* char as integer */ +#else /* define as 0, to make SARG and UARG occupy fewer instructions */ +# define CHARINT 0 +#endif + +#ifndef STRING_ONLY +int +_DEFUN(VFWPRINTF, (fp, fmt0, ap), + FILE * fp _AND + _CONST wchar_t *fmt0 _AND + va_list ap) +{ + int result; + result = _VFWPRINTF_R (_REENT, fp, fmt0, ap); + return result; +} +#endif /* STRING_ONLY */ + +int +_DEFUN(_VFWPRINTF_R, (data, fp, fmt0, ap), + struct _reent *data _AND + FILE * fp _AND + _CONST wchar_t *fmt0 _AND + va_list ap) +{ + register wchar_t *fmt; /* format string */ + register wint_t ch; /* character from fmt */ + register int n, m; /* handy integers (short term usage) */ + register wchar_t *cp; /* handy char pointer (short term usage) */ + register struct __siov *iovp;/* for PRINT macro */ + register int flags; /* flags as above */ + wchar_t *fmt_anchor; /* current format spec being processed */ +#ifndef _NO_POS_ARGS + int N; /* arg number */ + int arg_index; /* index into args processed directly */ + int numargs; /* number of varargs read */ + wchar_t *saved_fmt; /* saved fmt pointer */ + union arg_val args[MAX_POS_ARGS]; + int arg_type[MAX_POS_ARGS]; + int is_pos_arg; /* is current format positional? */ + int old_is_pos_arg; /* is current format positional? */ +#endif + int ret; /* return value accumulator */ + int width; /* width from format (%8d), or 0 */ + int prec; /* precision from format (%.3d), or -1 */ + wchar_t sign; /* sign prefix (' ', '+', '-', or \0) */ +#ifdef FLOATING_POINT + wchar_t decimal_point; +#ifdef _MB_CAPABLE + mbstate_t state; /* mbtowc calls from library must not change state */ +#endif + wchar_t softsign; /* temporary negative sign for floats */ + union { int i; _PRINTF_FLOAT_TYPE fp; } _double_ = {0}; +# define _fpvalue (_double_.fp) + int expt; /* integer value of exponent */ + int expsize = 0; /* character count for expstr */ + int ndig = 0; /* actual number of digits returned by wcvt */ + wchar_t expstr[MAXEXPLEN]; /* buffer for exponent string */ +#endif /* FLOATING_POINT */ + u_quad_t _uquad; /* integer arguments %[diouxX] */ + enum { OCT, DEC, HEX } base;/* base for [diouxX] conversion */ + int dprec; /* a copy of prec if [diouxX], 0 otherwise */ + int realsz; /* field size expanded by dprec */ + int size = 0; /* size of converted field or string */ + wchar_t *xdigs = NULL; /* digits for [xX] conversion */ +#define NIOV 8 + struct __suio uio; /* output information: summary */ + struct __siov iov[NIOV];/* ... and individual io vectors */ + wchar_t buf[BUF]; /* space for %c, %S, %[diouxX], %[aA] */ + wchar_t ox[2]; /* space for 0x hex-prefix */ + wchar_t *malloc_buf = NULL;/* handy pointer for malloced buffers */ + + /* + * Choose PADSIZE to trade efficiency vs. size. If larger printf + * fields occur frequently, increase PADSIZE and make the initialisers + * below longer. + */ +#define PADSIZE 16 /* pad chunk size */ + static _CONST wchar_t blanks[PADSIZE] = + {L' ',L' ',L' ',L' ',L' ',L' ',L' ',L' ', + L' ',L' ',L' ',L' ',L' ',L' ',L' ',L' '}; + static _CONST wchar_t zeroes[PADSIZE] = + {L'0',L'0',L'0',L'0',L'0',L'0',L'0',L'0', + L'0',L'0',L'0',L'0',L'0',L'0',L'0',L'0'}; + +#ifdef FLOATING_POINT +#ifdef _MB_CAPABLE + memset (&state, '\0', sizeof (state)); + _mbrtowc_r (data, &decimal_point, _localeconv_r (data)->decimal_point, + MB_CUR_MAX, &state); +#else + decimal_point = (wchar_t) *_localeconv_r (data)->decimal_point; +#endif +#endif + /* + * BEWARE, these `goto error' on error, and PAD uses `n'. + */ +#define PRINT(ptr, len) { \ + iovp->iov_base = (char *) (ptr); \ + iovp->iov_len = (len) * sizeof (wchar_t); \ + uio.uio_resid += (len) * sizeof (wchar_t); \ + iovp++; \ + if (++uio.uio_iovcnt >= NIOV) { \ + if (__SPRINT(data, fp, &uio)) \ + goto error; \ + iovp = iov; \ + } \ +} +#define PAD(howmany, with) { \ + if ((n = (howmany)) > 0) { \ + while (n > PADSIZE) { \ + PRINT (with, PADSIZE); \ + n -= PADSIZE; \ + } \ + PRINT (with, n); \ + } \ +} +#define FLUSH() { \ + if (uio.uio_resid && __SPRINT(data, fp, &uio)) \ + goto error; \ + uio.uio_iovcnt = 0; \ + iovp = iov; \ +} + + /* Macros to support positional arguments */ +#ifndef _NO_POS_ARGS +# define GET_ARG(n, ap, type) \ + (is_pos_arg \ + ? (n < numargs \ + ? args[n].val_##type \ + : get_arg (data, n, fmt_anchor, &ap, &numargs, args, \ + arg_type, &saved_fmt)->val_##type) \ + : (arg_index++ < numargs \ + ? args[n].val_##type \ + : (numargs < MAX_POS_ARGS \ + ? args[numargs++].val_##type = va_arg (ap, type) \ + : va_arg (ap, type)))) +#else +# define GET_ARG(n, ap, type) (va_arg (ap, type)) +#endif + + /* + * To extend shorts properly, we need both signed and unsigned + * argument extraction methods. + */ +#ifndef _NO_LONGLONG +#define SARG() \ + (flags&QUADINT ? GET_ARG (N, ap, quad_t) : \ + flags&LONGINT ? GET_ARG (N, ap, long) : \ + flags&SHORTINT ? (long)(short)GET_ARG (N, ap, int) : \ + flags&CHARINT ? (long)(signed char)GET_ARG (N, ap, int) : \ + (long)GET_ARG (N, ap, int)) +#define UARG() \ + (flags&QUADINT ? GET_ARG (N, ap, u_quad_t) : \ + flags&LONGINT ? GET_ARG (N, ap, u_long) : \ + flags&SHORTINT ? (u_long)(u_short)GET_ARG (N, ap, int) : \ + flags&CHARINT ? (u_long)(unsigned char)GET_ARG (N, ap, int) : \ + (u_long)GET_ARG (N, ap, u_int)) +#else +#define SARG() \ + (flags&LONGINT ? GET_ARG (N, ap, long) : \ + flags&SHORTINT ? (long)(short)GET_ARG (N, ap, int) : \ + flags&CHARINT ? (long)(signed char)GET_ARG (N, ap, int) : \ + (long)GET_ARG (N, ap, int)) +#define UARG() \ + (flags&LONGINT ? GET_ARG (N, ap, u_long) : \ + flags&SHORTINT ? (u_long)(u_short)GET_ARG (N, ap, int) : \ + flags&CHARINT ? (u_long)(unsigned char)GET_ARG (N, ap, int) : \ + (u_long)GET_ARG (N, ap, u_int)) +#endif + +#ifndef STRING_ONLY + /* Initialize std streams if not dealing with sprintf family. */ + CHECK_INIT (data, fp); + _flockfile (fp); + + ORIENT(fp, 1); + + /* sorry, fwprintf(read_only_file, "") returns EOF, not 0 */ + if (cantwrite (data, fp)) { + _funlockfile (fp); + return (EOF); + } + + /* optimise fwprintf(stderr) (and other unbuffered Unix files) */ + if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) && + fp->_file >= 0) { + _funlockfile (fp); + return (__sbwprintf (data, fp, fmt0, ap)); + } +#else /* STRING_ONLY */ + /* Create initial buffer if we are called by asprintf family. */ + if (fp->_flags & __SMBF && !fp->_bf._base) + { + fp->_bf._base = fp->_p = _malloc_r (data, 64); + if (!fp->_p) + { + data->_errno = ENOMEM; + return EOF; + } + fp->_bf._size = 64; + } +#endif /* STRING_ONLY */ + + fmt = (wchar_t *)fmt0; + uio.uio_iov = iovp = iov; + uio.uio_resid = 0; + uio.uio_iovcnt = 0; + ret = 0; +#ifndef _NO_POS_ARGS + arg_index = 0; + saved_fmt = NULL; + arg_type[0] = -1; + numargs = 0; + is_pos_arg = 0; +#endif + + /* + * Scan the format for conversions (`%' character). + */ + for (;;) { + cp = fmt; + while (*fmt != L'\0' && *fmt != L'%') + ++fmt; + if ((m = fmt - cp) != 0) { + PRINT (cp, m); + ret += m; + } + if (*fmt == L'\0') + goto done; + fmt_anchor = fmt; + fmt++; /* skip over '%' */ + + flags = 0; + dprec = 0; + width = 0; + prec = -1; + sign = L'\0'; +#ifndef _NO_POS_ARGS + N = arg_index; + is_pos_arg = 0; +#endif + +rflag: ch = *fmt++; +reswitch: switch (ch) { +#ifdef _WANT_IO_C99_FORMATS + case L'\'': + /* The ' flag is required by POSIX, but not C99. + In the C locale, LC_NUMERIC requires + thousands_sep to be the empty string. And since + no other locales are supported (yet), this flag + is currently a no-op. */ + goto rflag; +#endif + case L' ': + /* + * ``If the space and + flags both appear, the space + * flag will be ignored.'' + * -- ANSI X3J11 + */ + if (!sign) + sign = L' '; + goto rflag; + case L'#': + flags |= ALT; + goto rflag; + case L'*': +#ifndef _NO_POS_ARGS + /* we must check for positional arg used for dynamic width */ + n = N; + old_is_pos_arg = is_pos_arg; + is_pos_arg = 0; + if (is_digit (*fmt)) { + wchar_t *old_fmt = fmt; + + n = 0; + ch = *fmt++; + do { + n = 10 * n + to_digit (ch); + ch = *fmt++; + } while (is_digit (ch)); + + if (ch == L'$') { + if (n <= MAX_POS_ARGS) { + n -= 1; + is_pos_arg = 1; + } + else + goto error; + } + else { + fmt = old_fmt; + goto rflag; + } + } +#endif /* !_NO_POS_ARGS */ + + /* + * ``A negative field width argument is taken as a + * - flag followed by a positive field width.'' + * -- ANSI X3J11 + * They don't exclude field widths read from args. + */ + width = GET_ARG (n, ap, int); +#ifndef _NO_POS_ARGS + is_pos_arg = old_is_pos_arg; +#endif + if (width >= 0) + goto rflag; + width = -width; + /* FALLTHROUGH */ + case L'-': + flags |= LADJUST; + goto rflag; + case L'+': + sign = L'+'; + goto rflag; + case L'.': + if ((ch = *fmt++) == L'*') { +#ifndef _NO_POS_ARGS + /* we must check for positional arg used for dynamic width */ + n = N; + old_is_pos_arg = is_pos_arg; + is_pos_arg = 0; + if (is_digit (*fmt)) { + wchar_t *old_fmt = fmt; + + n = 0; + ch = *fmt++; + do { + n = 10 * n + to_digit (ch); + ch = *fmt++; + } while (is_digit (ch)); + + if (ch == L'$') { + if (n <= MAX_POS_ARGS) { + n -= 1; + is_pos_arg = 1; + } + else + goto error; + } + else { + fmt = old_fmt; + goto rflag; + } + } +#endif /* !_NO_POS_ARGS */ + prec = GET_ARG (n, ap, int); +#ifndef _NO_POS_ARGS + is_pos_arg = old_is_pos_arg; +#endif + if (prec < 0) + prec = -1; + goto rflag; + } + n = 0; + while (is_digit (ch)) { + n = 10 * n + to_digit (ch); + ch = *fmt++; + } + prec = n < 0 ? -1 : n; + goto reswitch; + case L'0': + /* + * ``Note that 0 is taken as a flag, not as the + * beginning of a field width.'' + * -- ANSI X3J11 + */ + flags |= ZEROPAD; + goto rflag; + case L'1': case L'2': case L'3': case L'4': + case L'5': case L'6': case L'7': case L'8': case L'9': + n = 0; + do { + n = 10 * n + to_digit (ch); + ch = *fmt++; + } while (is_digit (ch)); +#ifndef _NO_POS_ARGS + if (ch == L'$') { + if (n <= MAX_POS_ARGS) { + N = n - 1; + is_pos_arg = 1; + goto rflag; + } + else + goto error; + } +#endif /* !_NO_POS_ARGS */ + width = n; + goto reswitch; +#ifdef FLOATING_POINT + case L'L': + flags |= LONGDBL; + goto rflag; +#endif + case L'h': +#ifdef _WANT_IO_C99_FORMATS + if (*fmt == L'h') { + fmt++; + flags |= CHARINT; + } else +#endif + flags |= SHORTINT; + goto rflag; + case L'l': +#if defined _WANT_IO_C99_FORMATS || !defined _NO_LONGLONG + if (*fmt == L'l') { + fmt++; + flags |= QUADINT; + } else +#endif + flags |= LONGINT; + goto rflag; + case L'q': /* extension */ + flags |= QUADINT; + goto rflag; +#ifdef _WANT_IO_C99_FORMATS + case L'j': + if (sizeof (intmax_t) == sizeof (long)) + flags |= LONGINT; + else + flags |= QUADINT; + goto rflag; + case L'z': + if (sizeof (size_t) < sizeof (int)) + /* POSIX states size_t is 16 or more bits, as is short. */ + flags |= SHORTINT; + else if (sizeof (size_t) == sizeof (int)) + /* no flag needed */; + else if (sizeof (size_t) <= sizeof (long)) + flags |= LONGINT; + else + /* POSIX states that at least one programming + environment must support size_t no wider than + long, but that means other environments can + have size_t as wide as long long. */ + flags |= QUADINT; + goto rflag; + case L't': + if (sizeof (ptrdiff_t) < sizeof (int)) + /* POSIX states ptrdiff_t is 16 or more bits, as + is short. */ + flags |= SHORTINT; + else if (sizeof (ptrdiff_t) == sizeof (int)) + /* no flag needed */; + else if (sizeof (ptrdiff_t) <= sizeof (long)) + flags |= LONGINT; + else + /* POSIX states that at least one programming + environment must support ptrdiff_t no wider than + long, but that means other environments can + have ptrdiff_t as wide as long long. */ + flags |= QUADINT; + goto rflag; + case L'C': +#endif /* _WANT_IO_C99_FORMATS */ + case L'c': + cp = buf; + if (ch == L'c' && !(flags & LONGINT)) { + wint_t wc = btowc ((int) GET_ARG (N, ap, int)); + if (wc == WEOF) { + fp->_flags |= __SERR; + goto error; + } + cp[0] = (wchar_t) wc; + } + else + { + cp[0] = GET_ARG (N, ap, int); + } + cp[1] = L'\0'; + size = 1; + sign = L'\0'; + break; + case L'd': + case L'i': + _uquad = SARG (); +#ifndef _NO_LONGLONG + if ((quad_t)_uquad < 0) +#else + if ((long) _uquad < 0) +#endif + { + + _uquad = -_uquad; + sign = L'-'; + } + base = DEC; + goto number; +#ifdef FLOATING_POINT +# ifdef _WANT_IO_C99_FORMATS + case L'a': + case L'A': + case L'F': +# endif + case L'e': + case L'E': + case L'f': + case L'g': + case L'G': +# ifdef _NO_LONGDBL + if (flags & LONGDBL) { + _fpvalue = (double) GET_ARG (N, ap, _LONG_DOUBLE); + } else { + _fpvalue = GET_ARG (N, ap, double); + } + + /* do this before tricky precision changes + + If the output is infinite or NaN, leading + zeros are not permitted. Otherwise, scanf + could not read what printf wrote. + */ + if (isinf (_fpvalue)) { + if (_fpvalue < 0) + sign = '-'; + if (ch <= L'G') /* 'A', 'E', 'F', or 'G' */ + cp = L"INF"; + else + cp = L"inf"; + size = 3; + flags &= ~ZEROPAD; + break; + } + if (isnan (_fpvalue)) { + if (ch <= L'G') /* 'A', 'E', 'F', or 'G' */ + cp = L"NAN"; + else + cp = L"nan"; + size = 3; + flags &= ~ZEROPAD; + break; + } + +# else /* !_NO_LONGDBL */ + + if (flags & LONGDBL) { + _fpvalue = GET_ARG (N, ap, _LONG_DOUBLE); + } else { + _fpvalue = (_LONG_DOUBLE)GET_ARG (N, ap, double); + } + + /* do this before tricky precision changes */ + expt = _ldcheck (&_fpvalue); + if (expt == 2) { + if (_fpvalue < 0) + sign = L'-'; + if (ch <= L'G') /* 'A', 'E', 'F', or 'G' */ + cp = L"INF"; + else + cp = L"inf"; + size = 3; + flags &= ~ZEROPAD; + break; + } + if (expt == 1) { + if (ch <= L'G') /* 'A', 'E', 'F', or 'G' */ + cp = L"NAN"; + else + cp = L"nan"; + size = 3; + flags &= ~ZEROPAD; + break; + } +# endif /* !_NO_LONGDBL */ + + cp = buf; +# ifdef _WANT_IO_C99_FORMATS + if (ch == L'a' || ch == L'A') { + ox[0] = L'0'; + ox[1] = ch == L'a' ? L'x' : L'X'; + flags |= HEXPREFIX; + if (prec >= BUF) + { + if ((malloc_buf = + (wchar_t *)_malloc_r (data, (prec + 1) * sizeof (wchar_t))) + == NULL) + { + fp->_flags |= __SERR; + goto error; + } + cp = malloc_buf; + } + } else +# endif /* _WANT_IO_C99_FORMATS */ + if (prec == -1) { + prec = DEFPREC; + } else if ((ch == L'g' || ch == L'G') && prec == 0) { + prec = 1; + } + + flags |= FPT; + + cp = wcvt (data, _fpvalue, prec, flags, &softsign, + &expt, ch, &ndig, cp); + + if (ch == L'g' || ch == L'G') { + if (expt <= -4 || expt > prec) + ch -= 2; /* 'e' or 'E' */ + else + ch = L'g'; + } +# ifdef _WANT_IO_C99_FORMATS + else if (ch == L'F') + ch = L'f'; +# endif + if (ch <= L'e') { /* 'a', 'A', 'e', or 'E' fmt */ + --expt; + expsize = wexponent (expstr, expt, ch); + size = expsize + ndig; + if (ndig > 1 || flags & ALT) + ++size; + } else if (ch == L'f') { /* f fmt */ + if (expt > 0) { + size = expt; + if (prec || flags & ALT) + size += prec + 1; + } else /* "0.X" */ + size = (prec || flags & ALT) + ? prec + 2 + : 1; + } else if (expt >= ndig) { /* fixed g fmt */ + size = expt; + if (flags & ALT) + ++size; + } else + size = ndig + (expt > 0 ? + 1 : 2 - expt); + + if (softsign) + sign = L'-'; + break; +#endif /* FLOATING_POINT */ + case L'n': +#ifndef _NO_LONGLONG + if (flags & QUADINT) + *GET_ARG (N, ap, quad_ptr_t) = ret; + else +#endif + if (flags & LONGINT) + *GET_ARG (N, ap, long_ptr_t) = ret; + else if (flags & SHORTINT) + *GET_ARG (N, ap, short_ptr_t) = ret; +#ifdef _WANT_IO_C99_FORMATS + else if (flags & CHARINT) + *GET_ARG (N, ap, char_ptr_t) = ret; +#endif + else + *GET_ARG (N, ap, int_ptr_t) = ret; + continue; /* no output */ + case L'o': + _uquad = UARG (); + base = OCT; + goto nosign; + case L'p': + /* + * ``The argument shall be a pointer to void. The + * value of the pointer is converted to a sequence + * of printable characters, in an implementation- + * defined manner.'' + * -- ANSI X3J11 + */ + /* NOSTRICT */ + _uquad = (uintptr_t) GET_ARG (N, ap, void_ptr_t); + base = HEX; + xdigs = L"0123456789abcdef"; + flags |= HEXPREFIX; + ox[0] = L'0'; + ox[1] = ch = L'x'; + goto nosign; + case L's': +#ifdef _WANT_IO_C99_FORMATS + case L'S': +#endif + sign = '\0'; + cp = GET_ARG (N, ap, wchar_ptr_t); +#ifndef __OPTIMIZE_SIZE__ + /* Behavior is undefined if the user passed a + NULL string when precision is not 0. + However, if we are not optimizing for size, + we might as well mirror glibc behavior. */ + if (cp == NULL) { + cp = L"(null)"; + size = ((unsigned) prec > 6U) ? 6 : prec; + } + else +#endif /* __OPTIMIZE_SIZE__ */ +#ifdef _MB_CAPABLE + if (ch == L's' && !(flags & LONGINT)) { + char *arg = (char *) cp; + size_t insize = 0, nchars = 0, nconv = 0; + mbstate_t ps; + wchar_t *p; + + if (prec >= 0) { + char *p = arg; + memset ((_PTR)&ps, '\0', sizeof (mbstate_t)); + while (nchars < (size_t)prec) { + nconv = mbrlen (p, MB_CUR_MAX, &ps); + if (nconv == 0 || nconv == (size_t)-1 || + nconv == (size_t)-2) + break; + p += nconv; + ++nchars; + insize += nconv; + } + if (nconv == (size_t) -1 || nconv == (size_t) -2) { + fp->_flags |= __SERR; + goto error; + } + } else + insize = strlen(arg); + if (insize >= BUF) { + if ((malloc_buf = (wchar_t *) _malloc_r (data, (insize + 1) * sizeof (wchar_t))) + == NULL) { + fp->_flags |= __SERR; + goto error; + } + cp = malloc_buf; + } else + cp = buf; + memset ((_PTR)&ps, '\0', sizeof (mbstate_t)); + p = cp; + while (insize != 0) { + nconv = _mbrtowc_r (data, p, arg, insize, &ps); + if (nconv == 0 || nconv == (size_t)-1 || nconv == (size_t)-2) + break; + ++p; + arg += nconv; + insize -= nconv; + } + if (nconv == (size_t) -1 || nconv == (size_t) -2) { + fp->_flags |= __SERR; + goto error; + } + *p = L'\0'; + size = p - cp; + } + else +#endif /* _MB_CAPABLE */ + if (prec >= 0) { + /* + * can't use wcslen; can only look for the + * NUL in the first `prec' characters, and + * strlen () will go further. + */ + wchar_t *p = wmemchr (cp, L'\0', prec); + + if (p != NULL) { + size = p - cp; + if (size > prec) + size = prec; + } else + size = prec; + } else + size = wcslen (cp); + + break; + case L'u': + _uquad = UARG (); + base = DEC; + goto nosign; + case L'X': + xdigs = L"0123456789ABCDEF"; + goto hex; + case 'x': + xdigs = L"0123456789abcdef"; +hex: _uquad = UARG (); + base = HEX; + /* leading 0x/X only if non-zero */ + if (flags & ALT && _uquad != 0) { + ox[0] = L'0'; + ox[1] = ch; + flags |= HEXPREFIX; + } + + /* unsigned conversions */ +nosign: sign = L'\0'; + /* + * ``... diouXx conversions ... if a precision is + * specified, the 0 flag will be ignored.'' + * -- ANSI X3J11 + */ +number: if ((dprec = prec) >= 0) + flags &= ~ZEROPAD; + + /* + * ``The result of converting a zero value with an + * explicit precision of zero is no characters.'' + * -- ANSI X3J11 + */ + cp = buf + BUF; + if (_uquad != 0 || prec != 0) { + /* + * Unsigned mod is hard, and unsigned mod + * by a constant is easier than that by + * a variable; hence this switch. + */ + switch (base) { + case OCT: + do { + *--cp = to_char (_uquad & 7); + _uquad >>= 3; + } while (_uquad); + /* handle octal leading 0 */ + if (flags & ALT && *cp != L'0') + *--cp = L'0'; + break; + + case DEC: + /* many numbers are 1 digit */ + while (_uquad >= 10) { + *--cp = to_char (_uquad % 10); + _uquad /= 10; + } + *--cp = to_char (_uquad); + break; + + case HEX: + do { + *--cp = xdigs[_uquad & 15]; + _uquad >>= 4; + } while (_uquad); + break; + + default: + cp = L"bug in vfprintf: bad base"; + size = wcslen (cp); + goto skipsize; + } + } + /* + * ...result is to be converted to an 'alternate form'. + * For o conversion, it increases the precision to force + * the first digit of the result to be a zero." + * -- ANSI X3J11 + * + * To demonstrate this case, compile and run: + * printf ("%#.0o",0); + */ + else if (base == OCT && (flags & ALT)) + *--cp = L'0'; + + size = buf + BUF - cp; + skipsize: + break; + default: /* "%?" prints ?, unless ? is NUL */ + if (ch == L'\0') + goto done; + /* pretend it was %c with argument ch */ + cp = buf; + *cp = ch; + size = 1; + sign = L'\0'; + break; + } + + /* + * All reasonable formats wind up here. At this point, `cp' + * points to a string which (if not flags&LADJUST) should be + * padded out to `width' places. If flags&ZEROPAD, it should + * first be prefixed by any sign or other prefix; otherwise, + * it should be blank padded before the prefix is emitted. + * After any left-hand padding and prefixing, emit zeroes + * required by a decimal [diouxX] precision, then print the + * string proper, then emit zeroes required by any leftover + * floating precision; finally, if LADJUST, pad with blanks. + * If flags&FPT, ch must be in [aAeEfg]. + * + * Compute actual size, so we know how much to pad. + * size excludes decimal prec; realsz includes it. + */ + realsz = dprec > size ? dprec : size; + if (sign) + realsz++; + if (flags & HEXPREFIX) + realsz+= 2; + + /* right-adjusting blank padding */ + if ((flags & (LADJUST|ZEROPAD)) == 0) + PAD (width - realsz, blanks); + + /* prefix */ + if (sign) + PRINT (&sign, 1); + if (flags & HEXPREFIX) + PRINT (ox, 2); + + /* right-adjusting zero padding */ + if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD) + PAD (width - realsz, zeroes); + + /* leading zeroes from decimal precision */ + PAD (dprec - size, zeroes); + + /* the string or number proper */ +#ifdef FLOATING_POINT + if ((flags & FPT) == 0) { + PRINT (cp, size); + } else { /* glue together f_p fragments */ + if (ch >= L'f') { /* 'f' or 'g' */ + if (_fpvalue == 0) { + /* kludge for __dtoa irregularity */ + PRINT (L"0", 1); + if (expt < ndig || flags & ALT) { + PRINT (&decimal_point, 1); + PAD (ndig - 1, zeroes); + } + } else if (expt <= 0) { + PRINT (L"0", 1); + if (expt || ndig || flags & ALT) { + PRINT (&decimal_point, 1); + PAD (-expt, zeroes); + PRINT (cp, ndig); + } + } else if (expt >= ndig) { + PRINT (cp, ndig); + PAD (expt - ndig, zeroes); + if (flags & ALT) + PRINT (&decimal_point, 1); + } else { + PRINT (cp, expt); + cp += expt; + PRINT (&decimal_point, 1); + PRINT (cp, ndig - expt); + } + } else { /* 'a', 'A', 'e', or 'E' */ + if (ndig > 1 || flags & ALT) { + PRINT (cp, 1); + cp++; + PRINT (&decimal_point, 1); + if (_fpvalue) { + PRINT (cp, ndig - 1); + } else /* 0.[0..] */ + /* __dtoa irregularity */ + PAD (ndig - 1, zeroes); + } else /* XeYYY */ + PRINT (cp, 1); + PRINT (expstr, expsize); + } + } +#else /* !FLOATING_POINT */ + PRINT (cp, size); +#endif + /* left-adjusting padding (always blank) */ + if (flags & LADJUST) + PAD (width - realsz, blanks); + + /* finally, adjust ret */ + ret += width > realsz ? width : realsz; + + FLUSH (); /* copy out the I/O vectors */ + + if (malloc_buf != NULL) { + _free_r (data, malloc_buf); + malloc_buf = NULL; + } + } +done: + FLUSH (); +error: + if (malloc_buf != NULL) + _free_r (data, malloc_buf); +#ifndef STRING_ONLY + _funlockfile (fp); +#endif + return (__sferror (fp) ? EOF : ret); + /* NOTREACHED */ +} + +#ifdef FLOATING_POINT + +/* Using reentrant DATA, convert finite VALUE into a string of digits + with no decimal point, using NDIGITS precision and FLAGS as guides + to whether trailing zeros must be included. Set *SIGN to nonzero + if VALUE was negative. Set *DECPT to the exponent plus one. Set + *LENGTH to the length of the returned string. CH must be one of + [aAeEfFgG]; if it is [aA], then the return string lives in BUF, + otherwise the return value shares the mprec reentrant storage. */ +static wchar_t * +wcvt(struct _reent *data, _PRINTF_FLOAT_TYPE value, int ndigits, int flags, + wchar_t *sign, int *decpt, int ch, int *length, wchar_t *buf) +{ + int mode, dsgn; +# ifdef _NO_LONGDBL + union double_union tmp; + + tmp.d = value; + if (word0 (tmp) & Sign_bit) { /* this will check for < 0 and -0.0 */ + value = -value; + *sign = L'-'; + } else + *sign = L'\0'; +# else /* !_NO_LONGDBL */ + union + { + struct ldieee ieee; + _LONG_DOUBLE val; + } ld; + + ld.val = value; + if (ld.ieee.sign) { /* this will check for < 0 and -0.0 */ + value = -value; + *sign = L'-'; + } else + *sign = L'\0'; +# endif /* !_NO_LONGDBL */ + +# ifdef _WANT_IO_C99_FORMATS + if (ch == L'a' || ch == L'A') { + wchar_t *digits, *bp, *rve; + /* This code assumes FLT_RADIX is a power of 2. The initial + division ensures the digit before the decimal will be less + than FLT_RADIX (unless it is rounded later). There is no + loss of precision in these calculations. */ + value = FREXP (value, decpt) / 8; + if (!value) + *decpt = 1; + digits = ch == L'a' ? L"0123456789abcdef" : L"0123456789ABCDEF"; + bp = buf; + do { + value *= 16; + mode = (int) value; + value -= mode; + *bp++ = digits[mode]; + } while (ndigits-- && value); + if (value > 0.5 || (value == 0.5 && mode & 1)) { + /* round to even */ + rve = bp; + while (*--rve == digits[0xf]) { + *rve = L'0'; + } + *rve = *rve == L'9' ? digits[0xa] : *rve + 1; + } else { + while (ndigits-- >= 0) { + *bp++ = L'0'; + } + } + *length = bp - buf; + return buf; + } +# endif /* _WANT_IO_C99_FORMATS */ + if (ch == L'f' || ch == L'F') { + mode = 3; /* ndigits after the decimal point */ + } else { + /* To obtain ndigits after the decimal point for the 'e' + * and 'E' formats, round to ndigits + 1 significant + * figures. + */ + if (ch == L'e' || ch == L'E') { + ndigits++; + } + mode = 2; /* ndigits significant digits */ + } + + { + char *digits, *bp, *rve; +#ifndef _MB_CAPABLE + int i; +#endif + + digits = _DTOA_R (data, value, mode, ndigits, decpt, &dsgn, &rve); + + if ((ch != L'g' && ch != L'G') || flags & ALT) { /* Print trailing zeros */ + bp = digits + ndigits; + if (ch == L'f' || ch == L'F') { + if (*digits == L'0' && value) + *decpt = -ndigits + 1; + bp += *decpt; + } + if (value == 0) /* kludge for __dtoa irregularity */ + rve = bp; + while (rve < bp) + *rve++ = '0'; + } +#ifdef _MB_CAPABLE + *length = _mbsnrtowcs_r (data, buf, (const char **) &digits, + rve - digits, BUF, NULL); +#else + *length = rve - digits; + for (i = 0; i < *length && i < BUF; ++i) + buf[i] = (wchar_t) digits[i]; +#endif + return buf; + } +} + +static int +wexponent(wchar_t *p0, int exp, int fmtch) +{ + register wchar_t *p, *t; + wchar_t expbuf[MAXEXPLEN]; +# ifdef _WANT_IO_C99_FORMATS + int isa = fmtch == L'a' || fmtch == L'A'; +# else +# define isa 0 +# endif + + p = p0; + *p++ = isa ? L'p' - L'a' + fmtch : fmtch; + if (exp < 0) { + exp = -exp; + *p++ = L'-'; + } + else + *p++ = L'+'; + t = expbuf + MAXEXPLEN; + if (exp > 9) { + do { + *--t = to_char (exp % 10); + } while ((exp /= 10) > 9); + *--t = to_char (exp); + for (; t < expbuf + MAXEXPLEN; *p++ = *t++); + } + else { + if (!isa) + *p++ = L'0'; + *p++ = to_char (exp); + } + return (p - p0); +} +#endif /* FLOATING_POINT */ + + +#ifndef _NO_POS_ARGS + +/* Positional argument support. + Written by Jeff Johnston + + Copyright (c) 2002 Red Hat Incorporated. + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + The name of Red Hat Incorporated may not be used to endorse + or promote products derived from this software without specific + prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + DISCLAIMED. IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY + DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ + +/* function to get positional parameter N where n = N - 1 */ +static union arg_val * +_DEFUN(get_arg, (data, n, fmt, ap, numargs_p, args, arg_type, last_fmt), + struct _reent *data _AND + int n _AND + wchar_t *fmt _AND + va_list *ap _AND + int *numargs_p _AND + union arg_val *args _AND + int *arg_type _AND + wchar_t **last_fmt) +{ + wchar_t ch; + int number, flags; + int spec_type; + int numargs = *numargs_p; + __CH_CLASS chtype; + __STATE state, next_state; + __ACTION action; + int pos, last_arg; + int max_pos_arg = n; + /* Only need types that can be reached via vararg promotions. */ + enum types { INT, LONG_INT, QUAD_INT, CHAR_PTR, DOUBLE, LONG_DOUBLE, WIDE_CHAR }; + + /* if this isn't the first call, pick up where we left off last time */ + if (*last_fmt != NULL) + fmt = *last_fmt; + + /* we need to process either to end of fmt string or until we have actually + read the desired parameter from the vararg list. */ + while (*fmt && n >= numargs) + { + while (*fmt != L'\0' && *fmt != L'%') + fmt += 1; + + if (*fmt == L'\0') + break; + state = START; + flags = 0; + pos = -1; + number = 0; + spec_type = INT; + + /* Use state/action table to process format specifiers. We ignore invalid + formats and we are only interested in information that tells us how to + read the vararg list. */ + while (state != DONE) + { + ch = *fmt++; + chtype = ch < (wchar_t) 256 ? __chclass[ch] : OTHER; + next_state = __state_table[state][chtype]; + action = __action_table[state][chtype]; + state = next_state; + + switch (action) + { + case GETMOD: /* we have format modifier */ + switch (ch) + { + case L'h': + /* No flag needed, since short and char promote to int. */ + break; + case L'L': + flags |= LONGDBL; + break; + case L'q': + flags |= QUADINT; + break; +# ifdef _WANT_IO_C99_FORMATS + case L'j': + if (sizeof (intmax_t) == sizeof (long)) + flags |= LONGINT; + else + flags |= QUADINT; + break; + case L'z': + if (sizeof (size_t) <= sizeof (int)) + /* no flag needed */; + else if (sizeof (size_t) <= sizeof (long)) + flags |= LONGINT; + else + /* POSIX states that at least one programming + environment must support size_t no wider than + long, but that means other environments can + have size_t as wide as long long. */ + flags |= QUADINT; + break; + case L't': + if (sizeof (ptrdiff_t) <= sizeof (int)) + /* no flag needed */; + else if (sizeof (ptrdiff_t) <= sizeof (long)) + flags |= LONGINT; + else + /* POSIX states that at least one programming + environment must support ptrdiff_t no wider than + long, but that means other environments can + have ptrdiff_t as wide as long long. */ + flags |= QUADINT; + break; +# endif /* _WANT_IO_C99_FORMATS */ + case L'l': + default: +# if defined _WANT_IO_C99_FORMATS || !defined _NO_LONGLONG + if (*fmt == L'l') + { + flags |= QUADINT; + ++fmt; + } + else +# endif + flags |= LONGINT; + break; + } + break; + case GETARG: /* we have format specifier */ + { + numargs &= (MAX_POS_ARGS - 1); + /* process the specifier and translate it to a type to fetch from varargs */ + switch (ch) + { + case L'd': + case L'i': + case L'o': + case L'x': + case L'X': + case L'u': + if (flags & LONGINT) + spec_type = LONG_INT; +# ifndef _NO_LONGLONG + else if (flags & QUADINT) + spec_type = QUAD_INT; +# endif + else + spec_type = INT; + break; +# ifdef _WANT_IO_C99_FORMATS + case L'a': + case L'A': + case L'F': +# endif + case L'f': + case L'g': + case L'G': + case L'E': + case L'e': +# ifndef _NO_LONGDBL + if (flags & LONGDBL) + spec_type = LONG_DOUBLE; + else +# endif + spec_type = DOUBLE; + break; + case L's': +# ifdef _WANT_IO_C99_FORMATS + case L'S': +# endif + case L'p': + case L'n': + spec_type = CHAR_PTR; + break; + case L'c': +# ifdef _WANT_IO_C99_FORMATS + if (flags & LONGINT) + spec_type = WIDE_CHAR; + else +# endif + spec_type = INT; + break; +# ifdef _WANT_IO_C99_FORMATS + case L'C': + spec_type = WIDE_CHAR; + break; +# endif + } + + /* if we have a positional parameter, just store the type, otherwise + fetch the parameter from the vararg list */ + if (pos != -1) + arg_type[pos] = spec_type; + else + { + switch (spec_type) + { + case LONG_INT: + args[numargs++].val_long = va_arg (*ap, long); + break; + case QUAD_INT: + args[numargs++].val_quad_t = va_arg (*ap, quad_t); + break; + case WIDE_CHAR: + args[numargs++].val_wint_t = va_arg (*ap, wint_t); + break; + case INT: + args[numargs++].val_int = va_arg (*ap, int); + break; + case CHAR_PTR: + args[numargs++].val_wchar_ptr_t = va_arg (*ap, wchar_t *); + break; + case DOUBLE: + args[numargs++].val_double = va_arg (*ap, double); + break; + case LONG_DOUBLE: + args[numargs++].val__LONG_DOUBLE = va_arg (*ap, _LONG_DOUBLE); + break; + } + } + } + break; + case GETPOS: /* we have positional specifier */ + if (arg_type[0] == -1) + memset (arg_type, 0, sizeof (int) * MAX_POS_ARGS); + pos = number - 1; + max_pos_arg = (max_pos_arg > pos ? max_pos_arg : pos); + break; + case PWPOS: /* we have positional specifier for width or precision */ + if (arg_type[0] == -1) + memset (arg_type, 0, sizeof (int) * MAX_POS_ARGS); + number -= 1; + arg_type[number] = INT; + max_pos_arg = (max_pos_arg > number ? max_pos_arg : number); + break; + case GETPWB: /* we require format pushback */ + --fmt; + /* fallthrough */ + case GETPW: /* we have a variable precision or width to acquire */ + args[numargs++].val_int = va_arg (*ap, int); + break; + case NUMBER: /* we have a number to process */ + number = (ch - '0'); + while ((ch = *fmt) != '\0' && is_digit (ch)) + { + number = number * 10 + (ch - '0'); + ++fmt; + } + break; + case SKIPNUM: /* we have a number to skip */ + while ((ch = *fmt) != '\0' && is_digit (ch)) + ++fmt; + break; + case NOOP: + default: + break; /* do nothing */ + } + } + } + + /* process all arguments up to at least the one we are looking for and if we + have seen the end of the string, then process up to the max argument needed */ + if (*fmt == '\0') + last_arg = max_pos_arg; + else + last_arg = n; + + while (numargs <= last_arg) + { + switch (arg_type[numargs]) + { + case LONG_INT: + args[numargs++].val_long = va_arg (*ap, long); + break; + case QUAD_INT: + args[numargs++].val_quad_t = va_arg (*ap, quad_t); + break; + case CHAR_PTR: + args[numargs++].val_wchar_ptr_t = va_arg (*ap, wchar_t *); + break; + case DOUBLE: + args[numargs++].val_double = va_arg (*ap, double); + break; + case LONG_DOUBLE: + args[numargs++].val__LONG_DOUBLE = va_arg (*ap, _LONG_DOUBLE); + break; + case WIDE_CHAR: + args[numargs++].val_wint_t = va_arg (*ap, wint_t); + break; + case INT: + default: + args[numargs++].val_int = va_arg (*ap, int); + break; + } + } + + /* alter the global numargs value and keep a reference to the last bit of the fmt + string we processed here because the caller will continue processing where we started */ + *numargs_p = numargs; + *last_fmt = fmt; + return &args[n]; +} +#endif /* !_NO_POS_ARGS */ |