diff options
Diffstat (limited to 'newlib/libc/stdio/vfprintf.c')
| -rw-r--r-- | newlib/libc/stdio/vfprintf.c | 2063 |
1 files changed, 0 insertions, 2063 deletions
diff --git a/newlib/libc/stdio/vfprintf.c b/newlib/libc/stdio/vfprintf.c deleted file mode 100644 index 32fc202d5..000000000 --- a/newlib/libc/stdio/vfprintf.c +++ /dev/null @@ -1,2063 +0,0 @@ -/* - * 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. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 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 -<<vfprintf>>, <<vprintf>>, <<vsprintf>>, <<vsnprintf>>, <<vasprintf>>, <<vasnprintf>>---format argument list - -INDEX - vfprintf -INDEX - _vfprintf_r -INDEX - vprintf -INDEX - _vprintf_r -INDEX - vsprintf -INDEX - _vsprintf_r -INDEX - vsnprintf -INDEX - _vsnprintf_r -INDEX - vasprintf -INDEX - _vasprintf_r -INDEX - vasnprintf -INDEX - _vasnprintf_r - -ANSI_SYNOPSIS - #include <stdio.h> - #include <stdarg.h> - int vprintf(const char *<[fmt]>, va_list <[list]>); - int vfprintf(FILE *<[fp]>, const char *<[fmt]>, va_list <[list]>); - int vsprintf(char *<[str]>, const char *<[fmt]>, va_list <[list]>); - int vsnprintf(char *<[str]>, size_t <[size]>, const char *<[fmt]>, - va_list <[list]>); - int vasprintf(char **<[strp]>, const char *<[fmt]>, va_list <[list]>); - char *vasnprintf(char *<[str]>, size_t *<[size]>, const char *<[fmt]>, - va_list <[list]>); - - int _vprintf_r(struct _reent *<[reent]>, const char *<[fmt]>, - va_list <[list]>); - int _vfprintf_r(struct _reent *<[reent]>, FILE *<[fp]>, - const char *<[fmt]>, va_list <[list]>); - int _vsprintf_r(struct _reent *<[reent]>, char *<[str]>, - const char *<[fmt]>, va_list <[list]>); - int _vasprintf_r(struct _reent *<[reent]>, char **<[str]>, - const char *<[fmt]>, va_list <[list]>); - int _vsnprintf_r(struct _reent *<[reent]>, char *<[str]>, - size_t <[size]>, const char *<[fmt]>, va_list <[list]>); - char *_vasnprintf_r(struct _reent *<[reent]>, char *<[str]>, - size_t *<[size]>, const char *<[fmt]>, va_list <[list]>); - -DESCRIPTION -<<vprintf>>, <<vfprintf>>, <<vasprintf>>, <<vsprintf>>, <<vsnprintf>>, -and <<vasnprintf>> are (respectively) variants of <<printf>>, -<<fprintf>>, <<asprintf>>, <<sprintf>>, <<snprintf>>, and -<<asnprintf>>. 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>>. - -<<_vprintf_r>>, <<_vfprintf_r>>, <<_vasprintf_r>>, <<_vsprintf_r>>, -<<_vsnprintf_r>>, and <<_vasnprintf_r>> are reentrant versions of the -above. - -RETURNS -The return values are consistent with the corresponding functions. - -PORTABILITY -ANSI C requires <<vprintf>>, <<vfprintf>>, <<vsprintf>>, and -<<vsnprintf>>. The remaining functions are newlib extensions. - -Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>, -<<lseek>>, <<read>>, <<sbrk>>, <<write>>. -*/ - -#if defined(LIBC_SCCS) && !defined(lint) -/*static char *sccsid = "from: @(#)vfprintf.c 5.50 (Berkeley) 12/16/92";*/ -static char *rcsid = "$Id$"; -#endif /* LIBC_SCCS and not lint */ - -/* - * Actual printf innards. - * - * This code is large and complicated... - */ -#include <newlib.h> - -#ifdef INTEGER_ONLY -# define VFPRINTF vfiprintf -# ifdef STRING_ONLY -# define _VFPRINTF_R _svfiprintf_r -# else -# define _VFPRINTF_R _vfiprintf_r -# endif -#else -# define VFPRINTF vfprintf -# ifdef STRING_ONLY -# define _VFPRINTF_R _svfprintf_r -# else -# define _VFPRINTF_R _vfprintf_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 - -#ifdef STRING_ONLY -static int -_DEFUN(__sprint_r, (ptr, fp, uio), - struct _reent *ptr _AND - FILE *fp _AND - register struct __suio *uio) -{ - register size_t len; - register int w; - register struct __siov *iov; - register _CONST char *p = NULL; - - iov = uio->uio_iov; - len = 0; - - if (uio->uio_resid == 0) { - uio->uio_iovcnt = 0; - return (0); - } - - do { - while (len == 0) { - p = iov->iov_base; - len = iov->iov_len; - iov++; - } - w = fp->_w; - if (len >= w && fp->_flags & (__SMBF | __SOPT)) { - /* must be asprintf family */ - unsigned char *str; - int curpos = (fp->_p - fp->_bf._base); - /* Choose a geometric growth factor to avoid - * quadratic realloc behavior, but use a rate less - * than (1+sqrt(5))/2 to accomodate malloc - * overhead. asprintf EXPECTS us to overallocate, so - * that it can add a trailing \0 without - * reallocating. The new allocation should thus be - * max(prev_size*1.5, curpos+len+1). */ - int newsize = fp->_bf._size * 3 / 2; - if (newsize < curpos + len + 1) - newsize = curpos + len + 1; - if (fp->_flags & __SOPT) - { - /* asnprintf leaves original buffer alone. */ - str = (unsigned char *)_malloc_r (ptr, newsize); - if (!str) - { - ptr->_errno = ENOMEM; - goto err; - } - memcpy (str, fp->_bf._base, curpos); - fp->_flags = (fp->_flags & ~__SOPT) | __SMBF; - } - else - { - str = (unsigned char *)_realloc_r (ptr, fp->_bf._base, - newsize); - if (!str) { - /* Free unneeded buffer. */ - _free_r (ptr, fp->_bf._base); - /* Ensure correct errno, even if free - * changed it. */ - ptr->_errno = ENOMEM; - goto err; - } - } - fp->_bf._base = str; - fp->_p = str + curpos; - fp->_bf._size = newsize; - w = len; - fp->_w = newsize - curpos; - } - if (len < w) - w = len; - (void)memmove ((_PTR) fp->_p, (_PTR) p, (size_t) (w)); - fp->_w -= w; - fp->_p += w; - w = len; /* pretend we copied all */ - p += w; - len -= w; - } while ((uio->uio_resid -= w) != 0); - - uio->uio_resid = 0; - uio->uio_iovcnt = 0; - return 0; - -err: - fp->_flags |= __SERR; - uio->uio_resid = 0; - uio->uio_iovcnt = 0; - return EOF; -} - -#else /* !STRING_ONLY */ -/* - * Flush out all the vectors defined by the given uio, - * then reset it so that it can be reused. - */ -static int -_DEFUN(__sprint_r, (ptr, fp, uio), - struct _reent *ptr _AND - FILE *fp _AND - register struct __suio *uio) -{ - register int err; - - if (uio->uio_resid == 0) { - uio->uio_iovcnt = 0; - return (0); - } - err = __sfvwrite_r(ptr, fp, uio); - uio->uio_resid = 0; - uio->uio_iovcnt = 0; - return (err); -} - -/* - * 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(__sbprintf, (rptr, fp, fmt, ap), - struct _reent *rptr _AND - register FILE *fp _AND - _CONST char *fmt _AND - va_list ap) -{ - int ret; - FILE fake; - unsigned char buf[BUFSIZ]; - - /* copy the important variables */ - fake._flags = fp->_flags & ~__SNBF; - 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 = _VFPRINTF_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 char *cvt(struct _reent *, _PRINTF_FLOAT_TYPE, int, int, char *, int *, - int, int *, char *); - -static int exponent(char *, 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 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; - 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, char *fmt, - va_list *ap, int *numargs, union arg_val *args, - int *arg_type, char **last_fmt)); -#endif /* !_NO_POS_ARGS */ - -/* - * Macros for converting digits to letters and vice versa - */ -#define to_digit(c) ((c) - '0') -#define is_digit(c) ((unsigned)to_digit (c) <= 9) -#define to_char(n) ((n) + '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 - -int _EXFUN(_VFPRINTF_R, (struct _reent *, FILE *, _CONST char *, va_list)); - -#ifndef STRING_ONLY -int -_DEFUN(VFPRINTF, (fp, fmt0, ap), - FILE * fp _AND - _CONST char *fmt0 _AND - va_list ap) -{ - int result; - result = _VFPRINTF_R (_REENT, fp, fmt0, ap); - return result; -} -#endif /* STRING_ONLY */ - -int -_DEFUN(_VFPRINTF_R, (data, fp, fmt0, ap), - struct _reent *data _AND - FILE * fp _AND - _CONST char *fmt0 _AND - va_list ap) -{ - register char *fmt; /* format string */ - register int ch; /* character from fmt */ - register int n, m; /* handy integers (short term usage) */ - register char *cp; /* handy char pointer (short term usage) */ - register struct __siov *iovp;/* for PRINT macro */ - register int flags; /* flags as above */ - char *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 */ - char *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 */ - char sign; /* sign prefix (' ', '+', '-', or \0) */ -#ifdef FLOATING_POINT - char *decimal_point = _localeconv_r (data)->decimal_point; - char 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 cvt */ - char 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; /* size of converted field or string */ - char *xdigs = NULL; /* digits for [xX] conversion */ -#define NIOV 8 - struct __suio uio; /* output information: summary */ - struct __siov iov[NIOV];/* ... and individual io vectors */ - char buf[BUF]; /* space for %c, %S, %[diouxX], %[aA] */ - char ox[2]; /* space for 0x hex-prefix */ -#ifdef _MB_CAPABLE - wchar_t wc; - mbstate_t state; /* mbtowc calls from library must not change state */ -#endif - char *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 char blanks[PADSIZE] = - {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '}; - static _CONST char zeroes[PADSIZE] = - {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'}; - -#ifdef _MB_CAPABLE - memset (&state, '\0', sizeof (state)); -#endif - /* - * BEWARE, these `goto error' on error, and PAD uses `n'. - */ -#define PRINT(ptr, len) { \ - iovp->iov_base = (ptr); \ - iovp->iov_len = (len); \ - uio.uio_resid += (len); \ - iovp++; \ - if (++uio.uio_iovcnt >= NIOV) { \ - if (__sprint_r(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_r(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); - - /* sorry, fprintf(read_only_file, "") returns EOF, not 0 */ - if (cantwrite (data, fp)) { - _funlockfile (fp); - return (EOF); - } - - /* optimise fprintf(stderr) (and other unbuffered Unix files) */ - if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) && - fp->_file >= 0) { - _funlockfile (fp); - return (__sbprintf (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 = (char *)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; -#ifdef _MB_CAPABLE - while ((n = _mbtowc_r (data, &wc, fmt, MB_CUR_MAX, &state)) > 0) { - if (wc == '%') - break; - fmt += n; - } -#else - while (*fmt != '\0' && *fmt != '%') - fmt += 1; -#endif - if ((m = fmt - cp) != 0) { - PRINT (cp, m); - ret += m; - } -#ifdef _MB_CAPABLE - if (n <= 0) - goto done; -#else - if (*fmt == '\0') - goto done; -#endif - fmt_anchor = fmt; - fmt++; /* skip over '%' */ - - flags = 0; - dprec = 0; - width = 0; - prec = -1; - sign = '\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 '\'': - /* 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 ' ': - /* - * ``If the space and + flags both appear, the space - * flag will be ignored.'' - * -- ANSI X3J11 - */ - if (!sign) - sign = ' '; - goto rflag; - case '#': - flags |= ALT; - goto rflag; - case '*': -#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)) { - char *old_fmt = fmt; - - n = 0; - ch = *fmt++; - do { - n = 10 * n + to_digit (ch); - ch = *fmt++; - } while (is_digit (ch)); - - if (ch == '$') { - if (n <= MAX_POS_ARGS) { - n -= 1; - is_pos_arg = 1; - } - else - goto error; - } - else { - fmt = old_fmt; - goto rflag; - } - } -#endif /* !_NO_POS_ARGS */ - - /* - * ``A negative field width argument is taken as a - * - flag followed by a positive field width.'' - * -- ANSI X3J11 - * They don't exclude field widths read from args. - */ - width = GET_ARG (n, ap, int); -#ifndef _NO_POS_ARGS - is_pos_arg = old_is_pos_arg; -#endif - if (width >= 0) - goto rflag; - width = -width; - /* FALLTHROUGH */ - case '-': - flags |= LADJUST; - goto rflag; - case '+': - sign = '+'; - goto rflag; - case '.': - if ((ch = *fmt++) == '*') { -#ifndef _NO_POS_ARGS - /* we must check for positional arg used for dynamic width */ - n = N; - old_is_pos_arg = is_pos_arg; - is_pos_arg = 0; - if (is_digit (*fmt)) { - char *old_fmt = fmt; - - n = 0; - ch = *fmt++; - do { - n = 10 * n + to_digit (ch); - ch = *fmt++; - } while (is_digit (ch)); - - if (ch == '$') { - 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 '0': - /* - * ``Note that 0 is taken as a flag, not as the - * beginning of a field width.'' - * -- ANSI X3J11 - */ - flags |= ZEROPAD; - goto rflag; - case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': - n = 0; - do { - n = 10 * n + to_digit (ch); - ch = *fmt++; - } while (is_digit (ch)); -#ifndef _NO_POS_ARGS - if (ch == '$') { - 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': - flags |= LONGDBL; - goto rflag; -#endif - case 'h': -#ifdef _WANT_IO_C99_FORMATS - if (*fmt == 'h') { - fmt++; - flags |= CHARINT; - } else -#endif - flags |= SHORTINT; - goto rflag; - case 'l': -#if defined _WANT_IO_C99_FORMATS || !defined _NO_LONGLONG - if (*fmt == 'l') { - fmt++; - flags |= QUADINT; - } else -#endif - flags |= LONGINT; - goto rflag; - case 'q': /* extension */ - flags |= QUADINT; - goto rflag; -#ifdef _WANT_IO_C99_FORMATS - case 'j': - if (sizeof (intmax_t) == sizeof (long)) - flags |= LONGINT; - else - flags |= QUADINT; - goto rflag; - case '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 '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 'C': -#endif /* _WANT_IO_C99_FORMATS */ - case 'c': - cp = buf; -#ifdef _MB_CAPABLE - if (ch == 'C' || (flags & LONGINT)) { - mbstate_t ps; - - memset ((_PTR)&ps, '\0', sizeof (mbstate_t)); - if ((size = (int)_wcrtomb_r (data, cp, - (wchar_t)GET_ARG (N, ap, wint_t), - &ps)) == -1) { - fp->_flags |= __SERR; - goto error; - } - } - else -#endif /* _MB_CAPABLE */ - { - *cp = GET_ARG (N, ap, int); - size = 1; - } - sign = '\0'; - break; - case 'D': /* extension */ - flags |= LONGINT; - /*FALLTHROUGH*/ - case 'd': - case 'i': - _uquad = SARG (); -#ifndef _NO_LONGLONG - if ((quad_t)_uquad < 0) -#else - if ((long) _uquad < 0) -#endif - { - - _uquad = -_uquad; - sign = '-'; - } - base = DEC; - goto number; -#ifdef FLOATING_POINT -# ifdef _WANT_IO_C99_FORMATS - case 'a': - case 'A': - case 'F': -# endif - case 'e': - case 'E': - case 'f': - case 'g': - case '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 <= 'G') /* 'A', 'E', 'F', or 'G' */ - cp = "INF"; - else - cp = "inf"; - size = 3; - flags &= ~ZEROPAD; - break; - } - if (isnan (_fpvalue)) { - if (ch <= 'G') /* 'A', 'E', 'F', or 'G' */ - cp = "NAN"; - else - cp = "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 = '-'; - if (ch <= 'G') /* 'A', 'E', 'F', or 'G' */ - cp = "INF"; - else - cp = "inf"; - size = 3; - flags &= ~ZEROPAD; - break; - } - if (expt == 1) { - if (ch <= 'G') /* 'A', 'E', 'F', or 'G' */ - cp = "NAN"; - else - cp = "nan"; - size = 3; - flags &= ~ZEROPAD; - break; - } -# endif /* !_NO_LONGDBL */ - -# ifdef _WANT_IO_C99_FORMATS - if (ch == 'a' || ch == 'A') { - ox[0] = '0'; - ox[1] = ch == 'a' ? 'x' : 'X'; - flags |= HEXPREFIX; - if (prec >= BUF) - { - if ((malloc_buf = - (char *)_malloc_r (data, prec + 1)) - == NULL) - { - fp->_flags |= __SERR; - goto error; - } - cp = malloc_buf; - } - else - cp = buf; - } else -# endif /* _WANT_IO_C99_FORMATS */ - if (prec == -1) { - prec = DEFPREC; - } else if ((ch == 'g' || ch == 'G') && prec == 0) { - prec = 1; - } - - flags |= FPT; - - cp = cvt (data, _fpvalue, prec, flags, &softsign, - &expt, ch, &ndig, cp); - - if (ch == 'g' || ch == 'G') { - if (expt <= -4 || expt > prec) - ch -= 2; /* 'e' or 'E' */ - else - ch = 'g'; - } -# ifdef _WANT_IO_C99_FORMATS - else if (ch == 'F') - ch = 'f'; -# endif - if (ch <= 'e') { /* 'a', 'A', 'e', or 'E' fmt */ - --expt; - expsize = exponent (expstr, expt, ch); - size = expsize + ndig; - if (ndig > 1 || flags & ALT) - ++size; - } else if (ch == '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 = '-'; - break; -#endif /* FLOATING_POINT */ - case '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 'O': /* extension */ - flags |= LONGINT; - /*FALLTHROUGH*/ - case 'o': - _uquad = UARG (); - base = OCT; - goto nosign; - case '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 = "0123456789abcdef"; - flags |= HEXPREFIX; - ox[0] = '0'; - ox[1] = ch = 'x'; - goto nosign; - case 's': -#ifdef _WANT_IO_C99_FORMATS - case 'S': -#endif - sign = '\0'; - cp = GET_ARG (N, ap, char_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 = "(null)"; - size = ((unsigned) prec > 6U) ? 6 : prec; - } - else -#endif /* __OPTIMIZE_SIZE__ */ -#ifdef _MB_CAPABLE - if (ch == 'S' || (flags & LONGINT)) { - mbstate_t ps; - _CONST wchar_t *wcp; - - wcp = (_CONST wchar_t *)cp; - size = m = 0; - memset ((_PTR)&ps, '\0', sizeof (mbstate_t)); - - /* Count number of bytes needed for multibyte - string that will be produced from widechar - string. */ - if (prec >= 0) { - while (1) { - if (wcp[m] == L'\0') - break; - if ((n = (int)_wcrtomb_r (data, - buf, wcp[m], &ps)) == -1) { - fp->_flags |= __SERR; - goto error; - } - if (n + size > prec) - break; - m += 1; - size += n; - if (size == prec) - break; - } - } - else { - if ((size = (int)_wcsrtombs_r (data, - NULL, &wcp, 0, &ps)) == -1) { - fp->_flags |= __SERR; - goto error; - } - wcp = (_CONST wchar_t *)cp; - } - - if (size == 0) - break; - - if (size >= BUF) { - if ((malloc_buf = - (char *)_malloc_r (data, size + 1)) - == NULL) { - fp->_flags |= __SERR; - goto error; - } - cp = malloc_buf; - } else - cp = buf; - - /* Convert widechar string to multibyte string. */ - memset ((_PTR)&ps, '\0', sizeof (mbstate_t)); - if (_wcsrtombs_r (data, cp, &wcp, size, &ps) - != size) { - fp->_flags |= __SERR; - goto error; - } - cp[size] = '\0'; - } - else -#endif /* _MB_CAPABLE */ - if (prec >= 0) { - /* - * can't use strlen; can only look for the - * NUL in the first `prec' characters, and - * strlen () will go further. - */ - char *p = memchr (cp, 0, prec); - - if (p != NULL) { - size = p - cp; - if (size > prec) - size = prec; - } else - size = prec; - } else - size = strlen (cp); - - break; - case 'U': /* extension */ - flags |= LONGINT; - /*FALLTHROUGH*/ - case 'u': - _uquad = UARG (); - base = DEC; - goto nosign; - case 'X': - xdigs = "0123456789ABCDEF"; - goto hex; - case 'x': - xdigs = "0123456789abcdef"; -hex: _uquad = UARG (); - base = HEX; - /* leading 0x/X only if non-zero */ - if (flags & ALT && _uquad != 0) { - ox[0] = '0'; - ox[1] = ch; - flags |= HEXPREFIX; - } - - /* unsigned conversions */ -nosign: sign = '\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 != '0') - *--cp = '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 = "bug in vfprintf: bad base"; - size = strlen (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 = '0'; - - size = buf + BUF - cp; - skipsize: - break; - default: /* "%?" prints ?, unless ? is NUL */ - if (ch == '\0') - goto done; - /* pretend it was %c with argument ch */ - cp = buf; - *cp = ch; - size = 1; - sign = '\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 >= 'f') { /* 'f' or 'g' */ - if (_fpvalue == 0) { - /* kludge for __dtoa irregularity */ - PRINT ("0", 1); - if (expt < ndig || flags & ALT) { - PRINT (decimal_point, 1); - PAD (ndig - 1, zeroes); - } - } else if (expt <= 0) { - PRINT ("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 char * -cvt(struct _reent *data, _PRINTF_FLOAT_TYPE value, int ndigits, int flags, - char *sign, int *decpt, int ch, int *length, char *buf) -{ - int mode, dsgn; - char *digits, *bp, *rve; -# 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 = '-'; - } else - *sign = '\000'; -# 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 = '-'; - } else - *sign = '\000'; -# endif /* !_NO_LONGDBL */ - -# ifdef _WANT_IO_C99_FORMATS - if (ch == 'a' || ch == 'A') { - /* 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 == 'a' ? "0123456789abcdef" : "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 = '0'; - } - *rve = *rve == '9' ? digits[0xa] : *rve + 1; - } else { - while (ndigits-- >= 0) { - *bp++ = '0'; - } - } - *length = bp - buf; - return buf; - } -# endif /* _WANT_IO_C99_FORMATS */ - if (ch == 'f' || ch == '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 == 'e' || ch == 'E') { - ndigits++; - } - mode = 2; /* ndigits significant digits */ - } - - digits = _DTOA_R (data, value, mode, ndigits, decpt, &dsgn, &rve); - - if ((ch != 'g' && ch != 'G') || flags & ALT) { /* Print trailing zeros */ - bp = digits + ndigits; - if (ch == 'f' || ch == 'F') { - if (*digits == '0' && value) - *decpt = -ndigits + 1; - bp += *decpt; - } - if (value == 0) /* kludge for __dtoa irregularity */ - rve = bp; - while (rve < bp) - *rve++ = '0'; - } - *length = rve - digits; - return (digits); -} - -static int -exponent(char *p0, int exp, int fmtch) -{ - register char *p, *t; - char expbuf[MAXEXPLEN]; -# ifdef _WANT_IO_C99_FORMATS - int isa = fmtch == 'a' || fmtch == 'A'; -# else -# define isa 0 -# endif - - p = p0; - *p++ = isa ? 'p' - 'a' + fmtch : fmtch; - if (exp < 0) { - exp = -exp; - *p++ = '-'; - } - else - *p++ = '+'; - 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++ = '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. */ - -typedef enum { - ZERO, /* '0' */ - DIGIT, /* '1-9' */ - DOLLAR, /* '$' */ - MODFR, /* spec modifier */ - SPEC, /* format specifier */ - DOT, /* '.' */ - STAR, /* '*' */ - FLAG, /* format flag */ - OTHER, /* all other chars */ - MAX_CH_CLASS /* place-holder */ -} CH_CLASS; - -typedef enum { - START, /* start */ - SFLAG, /* seen a flag */ - WDIG, /* seen digits in width area */ - WIDTH, /* processed width */ - SMOD, /* seen spec modifier */ - SDOT, /* seen dot */ - VARW, /* have variable width specifier */ - VARP, /* have variable precision specifier */ - PREC, /* processed precision */ - VWDIG, /* have digits in variable width specification */ - VPDIG, /* have digits in variable precision specification */ - DONE, /* done */ - MAX_STATE, /* place-holder */ -} STATE; - -typedef enum { - NOOP, /* do nothing */ - NUMBER, /* build a number from digits */ - SKIPNUM, /* skip over digits */ - GETMOD, /* get and process format modifier */ - GETARG, /* get and process argument */ - GETPW, /* get variable precision or width */ - GETPWB, /* get variable precision or width and pushback fmt char */ - GETPOS, /* get positional parameter value */ - PWPOS, /* get positional parameter value for variable width or precision */ -} ACTION; - -_CONST static CH_CLASS chclass[256] = { - /* 00-07 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* 08-0f */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* 10-17 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* 18-1f */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* 20-27 */ FLAG, OTHER, OTHER, FLAG, DOLLAR, OTHER, OTHER, FLAG, - /* 28-2f */ OTHER, OTHER, STAR, FLAG, OTHER, FLAG, DOT, OTHER, - /* 30-37 */ ZERO, DIGIT, DIGIT, DIGIT, DIGIT, DIGIT, DIGIT, DIGIT, - /* 38-3f */ DIGIT, DIGIT, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* 40-47 */ OTHER, SPEC, OTHER, SPEC, SPEC, SPEC, SPEC, SPEC, - /* 48-4f */ OTHER, OTHER, OTHER, OTHER, MODFR, OTHER, OTHER, SPEC, - /* 50-57 */ OTHER, OTHER, OTHER, SPEC, OTHER, SPEC, OTHER, OTHER, - /* 58-5f */ SPEC, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* 60-67 */ OTHER, SPEC, OTHER, SPEC, SPEC, SPEC, SPEC, SPEC, - /* 68-6f */ MODFR, SPEC, MODFR, OTHER, MODFR, OTHER, SPEC, SPEC, - /* 70-77 */ SPEC, MODFR, OTHER, SPEC, MODFR, SPEC, OTHER, OTHER, - /* 78-7f */ SPEC, OTHER, MODFR, OTHER, OTHER, OTHER, OTHER, OTHER, - /* 80-87 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* 88-8f */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* 90-97 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* 98-9f */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* a0-a7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* a8-af */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* b0-b7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* b8-bf */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* c0-c7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* c8-cf */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* d0-d7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* d8-df */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* e0-e7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* e8-ef */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* f0-f7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, - /* f8-ff */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, -}; - -_CONST static STATE state_table[MAX_STATE][MAX_CH_CLASS] = { - /* '0' '1-9' '$' MODFR SPEC '.' '*' FLAG OTHER */ - /* START */ { SFLAG, WDIG, DONE, SMOD, DONE, SDOT, VARW, SFLAG, DONE }, - /* SFLAG */ { SFLAG, WDIG, DONE, SMOD, DONE, SDOT, VARW, SFLAG, DONE }, - /* WDIG */ { DONE, DONE, WIDTH, SMOD, DONE, SDOT, DONE, DONE, DONE }, - /* WIDTH */ { DONE, DONE, DONE, SMOD, DONE, SDOT, DONE, DONE, DONE }, - /* SMOD */ { DONE, DONE, DONE, DONE, DONE, DONE, DONE, DONE, DONE }, - /* SDOT */ { SDOT, PREC, DONE, SMOD, DONE, DONE, VARP, DONE, DONE }, - /* VARW */ { DONE, VWDIG, DONE, SMOD, DONE, SDOT, DONE, DONE, DONE }, - /* VARP */ { DONE, VPDIG, DONE, SMOD, DONE, DONE, DONE, DONE, DONE }, - /* PREC */ { DONE, DONE, DONE, SMOD, DONE, DONE, DONE, DONE, DONE }, - /* VWDIG */ { DONE, DONE, WIDTH, DONE, DONE, DONE, DONE, DONE, DONE }, - /* VPDIG */ { DONE, DONE, PREC, DONE, DONE, DONE, DONE, DONE, DONE }, -}; - -_CONST static ACTION action_table[MAX_STATE][MAX_CH_CLASS] = { - /* '0' '1-9' '$' MODFR SPEC '.' '*' FLAG OTHER */ - /* START */ { NOOP, NUMBER, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP }, - /* SFLAG */ { NOOP, NUMBER, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP }, - /* WDIG */ { NOOP, NOOP, GETPOS, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP }, - /* WIDTH */ { NOOP, NOOP, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP }, - /* SMOD */ { NOOP, NOOP, NOOP, NOOP, GETARG, NOOP, NOOP, NOOP, NOOP }, - /* SDOT */ { NOOP, SKIPNUM, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP }, - /* VARW */ { NOOP, NUMBER, NOOP, GETPW, GETPWB, GETPW, NOOP, NOOP, NOOP }, - /* VARP */ { NOOP, NUMBER, NOOP, GETPW, GETPWB, NOOP, NOOP, NOOP, NOOP }, - /* PREC */ { NOOP, NOOP, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP }, - /* VWDIG */ { NOOP, NOOP, PWPOS, NOOP, NOOP, NOOP, NOOP, NOOP, NOOP }, - /* VPDIG */ { NOOP, NOOP, PWPOS, NOOP, NOOP, NOOP, NOOP, NOOP, NOOP }, -}; - -/* 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 - char *fmt _AND - va_list *ap _AND - int *numargs_p _AND - union arg_val *args _AND - int *arg_type _AND - char **last_fmt) -{ - int 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 }; -# ifdef _MB_CAPABLE - wchar_t wc; - mbstate_t wc_state; - int nbytes; -# endif - - /* if this isn't the first call, pick up where we left off last time */ - if (*last_fmt != NULL) - fmt = *last_fmt; - -# ifdef _MB_CAPABLE - memset (&wc_state, '\0', sizeof (wc_state)); -# endif - - /* 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) - { -# ifdef _MB_CAPABLE - while ((nbytes = _mbtowc_r (data, &wc, fmt, MB_CUR_MAX, &wc_state)) > 0) - { - fmt += nbytes; - if (wc == '%') - break; - } - - if (nbytes <= 0) - break; -# else - while (*fmt != '\0' && *fmt != '%') - fmt += 1; - - if (*fmt == '\0') - break; -# endif /* ! _MB_CAPABLE */ - 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 = chclass[ch]; - 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 'h': - /* No flag needed, since short and char promote to int. */ - break; - case 'L': - flags |= LONGDBL; - break; - case 'q': - flags |= QUADINT; - break; -# ifdef _WANT_IO_C99_FORMATS - case 'j': - if (sizeof (intmax_t) == sizeof (long)) - flags |= LONGINT; - else - flags |= QUADINT; - break; - case '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 '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': - default: -# if defined _WANT_IO_C99_FORMATS || !defined _NO_LONGLONG - if (*fmt == '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 'd': - case 'i': - case 'o': - case 'x': - case 'X': - case '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; - case 'D': - case 'U': - case 'O': - spec_type = LONG_INT; - break; -# ifdef _WANT_IO_C99_FORMATS - case 'a': - case 'A': - case 'F': -# endif - case 'f': - case 'g': - case 'G': - case 'E': - case 'e': -# ifndef _NO_LONGDBL - if (flags & LONGDBL) - spec_type = LONG_DOUBLE; - else -# endif - spec_type = DOUBLE; - break; - case 's': -# ifdef _WANT_IO_C99_FORMATS - case 'S': -# endif - case 'p': - case 'n': - spec_type = CHAR_PTR; - break; - case '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 '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_char_ptr_t = va_arg (*ap, char *); - 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_char_ptr_t = va_arg (*ap, char *); - 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 */ |