sl@0: /*
sl@0: * FUNCTION
sl@0: * <<vprintf>>, <<vfprintf>>, <<vsprintf>>---format argument list
sl@0: * INDEX
sl@0: * vprintf
sl@0: * INDEX
sl@0: * vfprintf
sl@0: * INDEX
sl@0: * vsprintf
sl@0: * ANSI_SYNOPSIS
sl@0: * #include <stdio.h>
sl@0: * #include <stdarg.h>
sl@0: * int vprintf(const char *<[fmt]>, va_list <[list]>);
sl@0: * int vfprintf(FILE *<[fp]>, const char *<[fmt]>, va_list <[list]>);
sl@0: * int vsprintf(char *<[str]>, const char *<[fmt]>, va_list <[list]>);
sl@0: * int _vprintf_r(void *<[reent]>, const char *<[fmt]>,
sl@0: * va_list <[list]>);
sl@0: * int _vfprintf_r(void *<[reent]>, FILE *<[fp]>, const char *<[fmt]>,
sl@0: * va_list <[list]>);
sl@0: * int _vsprintf_r(void *<[reent]>, char *<[str]>, const char *<[fmt]>,
sl@0: * va_list <[list]>);
sl@0: * TRAD_SYNOPSIS
sl@0: * #include <stdio.h>
sl@0: * #include <varargs.h>
sl@0: * int vprintf( <[fmt]>, <[list]>)
sl@0: * char *<[fmt]>;
sl@0: * va_list <[list]>;
sl@0: * int vfprintf(<[fp]>, <[fmt]>, <[list]>)
sl@0: * FILE *<[fp]>;
sl@0: * char *<[fmt]>;
sl@0: * va_list <[list]>;
sl@0: * int vsprintf(<[str]>, <[fmt]>, <[list]>)
sl@0: * char *<[str]>;
sl@0: * char *<[fmt]>;
sl@0: * va_list <[list]>;
sl@0: * int _vprintf_r(<[reent]>, <[fmt]>, <[list]>)
sl@0: * char *<[reent]>;
sl@0: * char *<[fmt]>;
sl@0: * va_list <[list]>;
sl@0: * int _vfprintf_r(<[reent]>, <[fp]>, <[fmt]>, <[list]>)
sl@0: * char *<[reent]>;
sl@0: * FILE *<[fp]>;
sl@0: * char *<[fmt]>;
sl@0: * va_list <[list]>;
sl@0: * int _vsprintf_r(<[reent]>, <[str]>, <[fmt]>, <[list]>)
sl@0: * char *<[reent]>;
sl@0: * char *<[str]>;
sl@0: * char *<[fmt]>;
sl@0: * va_list <[list]>;
sl@0: * <<vprintf>>, <<vfprintf>>, and <<vsprintf>> are (respectively)
sl@0: * variants of <<printf>>, <<fprintf>>, and <<sprintf>>.  They differ
sl@0: * only in allowing their caller to pass the variable argument list as a
sl@0: * <<va_list>> object (initialized by <<va_start>>) rather than directly
sl@0: * accepting a variable number of arguments.
sl@0: * RETURNS
sl@0: * The return values are consistent with the corresponding functions:
sl@0: * <<vsprintf>> returns the number of bytes in the output string,
sl@0: * save that the concluding <<NULL>> is not counted.
sl@0: * <<vprintf>> and <<vfprintf>> return the number of characters transmitted.
sl@0: * If an error occurs, <<vprintf>> and <<vfprintf>> return <<EOF>>. No
sl@0: * error returns occur for <<vsprintf>>.
sl@0: * PORTABILITY
sl@0: * ANSI C requires all three functions.
sl@0: * Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
sl@0: * <<lseek>>, <<read>>, <<sbrk>>, <<write>>.
sl@0: * 
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: 
sl@0: /*-
sl@0:  * Copyright (c) 1990 The Regents of the University of California.
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * This code is derived from software contributed to Berkeley by
sl@0:  * Chris Torek.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 3. All advertising materials mentioning features or use of this software
sl@0:  *    must display the following acknowledgement:
sl@0:  *	This product includes software developed by the University of
sl@0:  *	California, Berkeley and its contributors.
sl@0:  * 4. Neither the name of the University nor the names of its contributors
sl@0:  *    may be used to endorse or promote products derived from this software
sl@0:  *    without specific prior written permission.
sl@0:  *
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
sl@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
sl@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sl@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
sl@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
sl@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
sl@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
sl@0:  * SUCH DAMAGE.
sl@0:  */
sl@0: 
sl@0: /*
sl@0:  * Actual printf innards.
sl@0:  *
sl@0:  * This code is large and complicated...
sl@0:  */
sl@0: 
sl@0: #if 1
sl@0: #define _NO_LONGLONG
sl@0: #endif
sl@0: 
sl@0: #include <_ansi.h>
sl@0: #include <stdio_r.h>
sl@0: #include <stdlib_r.h>
sl@0: #include <string.h>
sl@0: #include <reent.h>
sl@0: 
sl@0: #include <stdarg.h>
sl@0: 
sl@0: #include "LOCAL.H"
sl@0: #include "FVWRITE.H"
sl@0: 
sl@0: 
sl@0: //cm
sl@0: #include <stdlib.h>
sl@0: 
sl@0: 
sl@0: /*
sl@0:  * Flush out all the vectors defined by the given uio,
sl@0:  * then reset it so that it can be reused.
sl@0:  */
sl@0: static int
sl@0: __sprint(FILE *fp,register struct __suio *uio)
sl@0: {
sl@0: 	register int err;
sl@0: 
sl@0: 	if (uio->uio_resid == 0) {
sl@0: 		uio->uio_iovcnt = 0;
sl@0: 		return (0);
sl@0: 	}
sl@0: 	err = __sfvwrite(fp, uio);
sl@0: 	uio->uio_resid = 0;
sl@0: 	uio->uio_iovcnt = 0;
sl@0: 	return (err);
sl@0: }
sl@0: 
sl@0: /*
sl@0:  * Helper function for `fprintf to unbuffered unix file': creates a
sl@0:  * temporary buffer.  We only work on write-only files; this avoids
sl@0:  * worries about ungetc buffers and so forth.
sl@0:  */
sl@0: static int
sl@0: __sbprintf(register FILE *fp,const char *fmt,va_list ap)
sl@0: {
sl@0: 	int ret;
sl@0: 	FILE fake;
sl@0: 	unsigned char buf[BUFSIZ];
sl@0: 
sl@0: 	/* copy the important variables */
sl@0: 	fake._data = fp->_data;
sl@0: 	fake._flags = (short)(fp->_flags & ~__SNBF);
sl@0: 	fake._file = fp->_file;
sl@0: 	fake._cookie = fp->_cookie;
sl@0: 	fake._write = fp->_write;
sl@0: 
sl@0: 	/* set up the buffer */
sl@0: 	fake._bf._base = fake._p = buf;
sl@0: 	fake._bf._size = fake._w = sizeof(buf);
sl@0: 	fake._lbfsize = 0;	/* not actually used, but Just In Case */
sl@0: 
sl@0: 	/* do the work, then copy any error status */
sl@0: 	ret = vfprintf(&fake, fmt, ap);
sl@0: 	if (ret >= 0 && fflush(&fake))
sl@0: 		ret = EOF;
sl@0: 	if (fake._flags & __SERR)
sl@0: 		fp->_flags |= __SERR;
sl@0: 	return (ret);
sl@0: }
sl@0: 
sl@0: 
sl@0: /* #include <locale.h>   for decimal_point */
sl@0: #include <math.h>
sl@0: #include "FLOATIO.H"
sl@0: 
sl@0: #define	BUF		(MAXEXP+MAXFRACT+1)	/* + decimal point */
sl@0: #define	DEFPREC		6
sl@0: 
sl@0: extern int e32cvt (char *buf, int buflen, double, int width, int prec, int flags, int fmt);
sl@0: 
sl@0: 
sl@0: /*
sl@0:  * Macros for converting digits to letters and vice versa
sl@0:  */
sl@0: #define	to_digit(c)	((c) - '0')
sl@0: #define is_digit(c)	((unsigned)to_digit(c) <= 9)
sl@0: #define	to_char(n)	((n) + '0')
sl@0: 
sl@0: /*
sl@0:  * Flags used during conversion.
sl@0:  */
sl@0: #define	ALT		0x001		/* alternate form */
sl@0: #define	HEXPREFIX	0x002		/* add 0x or 0X prefix */
sl@0: #define	LADJUST		0x004		/* left adjustment */
sl@0: #define	LONGDBL		0x008		/* long double; unimplemented */
sl@0: #define	LONGINT		0x010		/* long integer */
sl@0: #define	QUADINT		0x020		/* quad integer */
sl@0: #define	SHORTINT	0x040		/* short integer */
sl@0: #define	ZEROPAD		0x080		/* zero (as opposed to blank) pad */
sl@0: #define FPT		0x100		/* Floating point number */
sl@0: 
sl@0: EXPORT_C int 
sl@0: vfprintf (FILE * fp, const char *fmt0, va_list ap)
sl@0: {
sl@0:   return _vfprintf_r (fp->_data, fp, fmt0, ap);
sl@0: }
sl@0: 
sl@0: /**
sl@0: A reentrant version of vfprintf().
sl@0: */
sl@0: EXPORT_C int 
sl@0: _vfprintf_r (struct _reent *data, FILE * fp, const char *fmt0, va_list ap)
sl@0: {
sl@0: 	register char *fmt;	/* format string */
sl@0: 	register int ch;	/* character from fmt */
sl@0: 	register int n, m;	/* handy integers (short term usage) */
sl@0: 	register char *cp;	/* handy char pointer (short term usage) */
sl@0: 	register struct __siov *iovp;/* for PRINT macro */
sl@0: 	register int flags;	/* flags as above */
sl@0: 	int ret;		/* return value accumulator */
sl@0: 	int width;		/* width from format (%8d), or 0 */
sl@0: 	int prec;		/* precision from format (%.3d), or -1 */
sl@0: 	char sign;		/* sign prefix (' ', '+', '-', or \0) */
sl@0: 	wchar_t wc;
sl@0: #if 0
sl@0: 	char *decimal_point = "."; /* localeconv()->decimal_point; */
sl@0: #endif
sl@0: //	char softsign;		/* temporary negative sign for floats */
sl@0: 	double _double;		/* double precision arguments %[eEfgG] */
sl@0: //	int expt;		/* integer value of exponent */
sl@0: //	int expsize;		/* character count for expstr */
sl@0: //	int ndig;		/* actual number of digits returned by cvt */
sl@0: //	char expstr[7];		/* buffer for exponent string */
sl@0: 
sl@0: #ifndef _NO_LONGLONG
sl@0: #define	quad_t	  long long
sl@0: #define	u_quad_t  unsigned long long
sl@0: #endif
sl@0: 
sl@0: #ifndef _NO_LONGLONG
sl@0: 	u_quad_t _uquad;	/* integer arguments %[diouxX] */
sl@0: #else
sl@0: 	u_long _uquad;
sl@0: #endif
sl@0: 	enum { OCT, DEC, HEX } base;/* base for [diouxX] conversion */
sl@0: 	int dprec;		/* a copy of prec if [diouxX], 0 otherwise */
sl@0: 	int realsz;		/* field size expanded by dprec */
sl@0: 	int size;		/* size of converted field or string */
sl@0: 	char *xdigs = NULL;	/* digits for [xX] conversion */
sl@0: #define NIOV 8
sl@0: 	struct __suio uio;	/* output information: summary */
sl@0: 	struct __siov iov[NIOV];/* ... and individual io vectors */
sl@0: 	char buf[BUF];		/* space for %c, %[diouxX], %[eEfgG] */
sl@0: 	char ox[2];		/* space for 0x hex-prefix */
sl@0: 
sl@0: 	/*
sl@0: 	 * Choose PADSIZE to trade efficiency vs. size.  If larger printf
sl@0: 	 * fields occur frequently, increase PADSIZE and make the initialisers
sl@0: 	 * below longer.
sl@0: 	 */
sl@0: #define	PADSIZE	16		/* pad chunk size */
sl@0: 	static const char blanks[PADSIZE] =
sl@0: 	 {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
sl@0: 	static const char zeroes[PADSIZE] =
sl@0: 	 {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};
sl@0: 
sl@0: 	/*
sl@0: 	 * BEWARE, these `goto error' on error, and PAD uses `n'.
sl@0: 	 */
sl@0: #define	PRINT(ptr, len) { \
sl@0: 	iovp->iov_base = (ptr); \
sl@0: 	iovp->iov_len = (len); \
sl@0: 	uio.uio_resid += (len); \
sl@0: 	iovp++; \
sl@0: 	if (++uio.uio_iovcnt >= NIOV) { \
sl@0: 		if (__sprint(fp, &uio)) \
sl@0: 			goto error; \
sl@0: 		iovp = iov; \
sl@0: 	} \
sl@0: }
sl@0: #define	PAD(howmany, with) { \
sl@0: 	if ((n = (howmany)) > 0) { \
sl@0: 		while (n > PADSIZE) { \
sl@0: 			PRINT(with, PADSIZE); \
sl@0: 			n -= PADSIZE; \
sl@0: 		} \
sl@0: 		PRINT(with, n); \
sl@0: 	} \
sl@0: }
sl@0: #define	FLUSH() { \
sl@0: 	if (uio.uio_resid && __sprint(fp, &uio)) \
sl@0: 		goto error; \
sl@0: 	uio.uio_iovcnt = 0; \
sl@0: 	iovp = iov; \
sl@0: }
sl@0: 
sl@0: 	/*
sl@0: 	 * To extend shorts properly, we need both signed and unsigned
sl@0: 	 * argument extraction methods.
sl@0: 	 */
sl@0: #ifndef _NO_LONGLONG
sl@0: #define	SARG() \
sl@0: 	(flags&QUADINT ? va_arg(ap, quad_t) : \
sl@0: 	    flags&LONGINT ? va_arg(ap, long) : \
sl@0: 	    flags&SHORTINT ? (long)(short)va_arg(ap, int) : \
sl@0: 	    (long)va_arg(ap, int))
sl@0: #define	UARG() \
sl@0: 	(flags&QUADINT ? va_arg(ap, u_quad_t) : \
sl@0: 	    flags&LONGINT ? va_arg(ap, u_long) : \
sl@0: 	    flags&SHORTINT ? (u_long)(u_short)va_arg(ap, int) : \
sl@0: 	    (u_long)va_arg(ap, u_int))
sl@0: #else
sl@0: #define	SARG() \
sl@0: 	(flags&LONGINT ? va_arg(ap, long) : \
sl@0: 	    flags&SHORTINT ? (long)(short)va_arg(ap, int) : \
sl@0: 	    (long)va_arg(ap, int))
sl@0: #define	UARG() \
sl@0: 	(flags&LONGINT ? va_arg(ap, u_long) : \
sl@0: 	    flags&SHORTINT ? (u_long)(u_short)va_arg(ap, int) : \
sl@0: 	    (u_long)va_arg(ap, u_int))
sl@0: #endif
sl@0: 
sl@0: 	CHECK_INIT (fp);
sl@0: 
sl@0: 	/* sorry, fprintf(read_only_file, "") returns EOF, not 0 */
sl@0: 	if (cantwrite(fp))
sl@0: 		return (EOF);
sl@0: 
sl@0: 	/* optimise fprintf(stderr) (and other unbuffered Unix files) */
sl@0: 	if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) &&
sl@0: 	    fp->_file >= 0)
sl@0: 		return (__sbprintf(fp, fmt0, ap));
sl@0: 
sl@0: 	fmt = (char *)fmt0;
sl@0: 	uio.uio_iov = iovp = iov;
sl@0: 	uio.uio_resid = 0;
sl@0: 	uio.uio_iovcnt = 0;
sl@0: 	ret = 0;
sl@0: 
sl@0: 	/*
sl@0: 	 * Scan the format for conversions (`%' character).
sl@0: 	 */
sl@0: 	for (;;) {
sl@0: 		cp = fmt;
sl@0: 		while ((n = mbtowc(&wc, fmt, MB_CUR_MAX)) > 0) {
sl@0: 			fmt += n;
sl@0: 			if (wc == L'%') {
sl@0: 				fmt--;
sl@0: 				break;
sl@0: 			}
sl@0: 		}
sl@0: 		if ((m = fmt - cp) != 0) {
sl@0: 			PRINT(cp, m);
sl@0: 			ret += m;
sl@0: 		}
sl@0: 		if (n <= 0)
sl@0: 			goto done;
sl@0: 		fmt++;		/* skip over '%' */
sl@0: 
sl@0: 		flags = 0;
sl@0: 		dprec = 0;
sl@0: 		width = 0;
sl@0: 		prec = -1;
sl@0: 		sign = '\0';
sl@0: 
sl@0: rflag:		ch = *fmt++;
sl@0: reswitch:	switch (ch) {
sl@0: 		case ' ':
sl@0: 			/*
sl@0: 			 * ``If the space and + flags both appear, the space
sl@0: 			 * flag will be ignored.''
sl@0: 			 *	-- ANSI X3J11
sl@0: 			 */
sl@0: 			if (!sign)
sl@0: 				sign = ' ';
sl@0: 			goto rflag;
sl@0: 		case '#':
sl@0: 			flags |= ALT;
sl@0: 			goto rflag;
sl@0: 		case '*':
sl@0: 			/*
sl@0: 			 * ``A negative field width argument is taken as a
sl@0: 			 * - flag followed by a positive field width.''
sl@0: 			 *	-- ANSI X3J11
sl@0: 			 * They don't exclude field widths read from args.
sl@0: 			 */
sl@0: 			if ((width = va_arg(ap, int)) >= 0)
sl@0: 				goto rflag;
sl@0: 			width = -width;
sl@0: 			/* FALLTHROUGH */
sl@0: 		case '-':
sl@0: 			flags |= LADJUST;
sl@0: 			goto rflag;
sl@0: 		case '+':
sl@0: 			sign = '+';
sl@0: 			goto rflag;
sl@0: 		case '.':
sl@0: 			if ((ch = *fmt++) == '*') {
sl@0: 				n = va_arg(ap, int);
sl@0: 				prec = n < 0 ? -1 : n;
sl@0: 				goto rflag;
sl@0: 			}
sl@0: 			n = 0;
sl@0: 			while (is_digit(ch)) {
sl@0: 				n = 10 * n + to_digit(ch);
sl@0: 				ch = *fmt++;
sl@0: 			}
sl@0: 			prec = n < 0 ? -1 : n;
sl@0: 			goto reswitch;
sl@0: 		case '0':
sl@0: 			/*
sl@0: 			 * ``Note that 0 is taken as a flag, not as the
sl@0: 			 * beginning of a field width.''
sl@0: 			 *	-- ANSI X3J11
sl@0: 			 */
sl@0: 			flags |= ZEROPAD;
sl@0: 			goto rflag;
sl@0: 		case '1': case '2': case '3': case '4':
sl@0: 		case '5': case '6': case '7': case '8': case '9':
sl@0: 			n = 0;
sl@0: 			do {
sl@0: 				n = 10 * n + to_digit(ch);
sl@0: 				ch = *fmt++;
sl@0: 			} while (is_digit(ch));
sl@0: 			width = n;
sl@0: 			goto reswitch;
sl@0: 		case 'L':
sl@0: 			flags |= LONGDBL;
sl@0: 			goto rflag;
sl@0: 		case 'h':
sl@0: 			flags |= SHORTINT;
sl@0: 			goto rflag;
sl@0: 		case 'l':
sl@0: 			if (*fmt == 'l') {
sl@0: 				fmt++;
sl@0: 				flags |= QUADINT;
sl@0: 			} else {
sl@0: 				flags |= LONGINT;
sl@0: 			}
sl@0: 			goto rflag;
sl@0: 		case 'q':
sl@0: 			flags |= QUADINT;
sl@0: 			goto rflag;
sl@0: 		case 'c':
sl@0: 			*(cp = buf) = (char)va_arg(ap, int);
sl@0: 			size = 1;
sl@0: 			sign = '\0';
sl@0: 			break;
sl@0: 		case 'D':
sl@0: 			flags |= LONGINT;
sl@0: 			/*FALLTHROUGH*/
sl@0: 		case 'd':
sl@0: 		case 'i':
sl@0: 			_uquad = SARG();
sl@0: #ifndef _NO_LONGLONG
sl@0: 			if ((quad_t)_uquad < 0)
sl@0: #else
sl@0: 			if ((long) _uquad < 0)
sl@0: #endif
sl@0: 			{
sl@0: 
sl@0: #ifndef _NO_LONGLONG
sl@0: 				_uquad = -_uquad;
sl@0: #else
sl@0: 				_uquad = (u_long)(-(long)_uquad);
sl@0: #endif
sl@0: 				sign = '-';
sl@0: 			}
sl@0: 			base = DEC;
sl@0: 			goto number;
sl@0: 
sl@0: 		case 'e':
sl@0: 		case 'E':
sl@0: 		case 'f':
sl@0: 		case 'g':
sl@0: 		case 'G':
sl@0: 			if (prec == -1) {
sl@0: 				prec = DEFPREC;
sl@0: 			} else if ((ch == 'g' || ch == 'G') && prec == 0) {
sl@0: 				prec = 1;
sl@0: 			}
sl@0: 
sl@0: 			if (flags & LONGDBL) {
sl@0: 				_double = (double) va_arg(ap, long double);
sl@0: 			} else {
sl@0: 				_double = va_arg(ap, double);
sl@0: 			}
sl@0: 
sl@0: 			/* do this before tricky precision changes */
sl@0: 			if (isinf(_double)) {
sl@0: 				if (_double < 0)
sl@0: 					sign = '-';
sl@0: 				cp = "Inf";
sl@0: 				size = 3;
sl@0: 				break;
sl@0: 			}
sl@0: 			if (isnan(_double)) {
sl@0: 				cp = "NaN";
sl@0: 				size = 3;
sl@0: 				break;
sl@0: 			}
sl@0: 			flags |= FPT;
sl@0: #if 0
sl@0: 			cp = cvt(data, _double, prec, flags, &softsign,
sl@0: 				&expt, ch, &ndig);
sl@0: 			if (ch == 'g' || ch == 'G') {
sl@0: 				if (expt <= -4 || expt > prec)
sl@0: 					ch = (ch == 'g') ? 'e' : 'E';
sl@0: 				else
sl@0: 					ch = 'g';
sl@0: 			} 
sl@0: 			if (ch <= 'e') {	/* 'e' or 'E' fmt */
sl@0: 				--expt;
sl@0: 				expsize = exponent(expstr, expt, ch);
sl@0: 				size = expsize + ndig;
sl@0: 				if (ndig > 1 || flags & ALT)
sl@0: 					++size;
sl@0: 			} else if (ch == 'f') {		/* f fmt */
sl@0: 				if (expt > 0) {
sl@0: 					size = expt;
sl@0: 					if (prec || flags & ALT)
sl@0: 						size += prec + 1;
sl@0: 				} else	/* "0.X" */
sl@0: 					size = prec + 2;
sl@0: 			} else if (expt >= ndig) {	/* fixed g fmt */
sl@0: 				size = expt;
sl@0: 				if (flags & ALT)
sl@0: 					++size;
sl@0: 			} else
sl@0: 				size = ndig + (expt > 0 ?
sl@0: 					1 : 2 - expt);
sl@0: 
sl@0: 			if (softsign)
sl@0: 				sign = '-';
sl@0: #else
sl@0: 			if (_double < 0) {
sl@0: 				_double = -_double;
sl@0: 				sign = '-';
sl@0: 			}
sl@0: 			size = e32cvt(buf, BUF, _double, width, prec, flags, ch);
sl@0: 			cp=buf;
sl@0: #endif
sl@0: 			break;
sl@0: 
sl@0: 		case 'n':
sl@0: #ifndef _NO_LONGLONG
sl@0: 			if (flags & QUADINT)
sl@0: 				*va_arg(ap, quad_t *) = ret;
sl@0: 			else 
sl@0: #endif
sl@0: 			if (flags & LONGINT)
sl@0: 				*va_arg(ap, long *) = ret;
sl@0: 			else if (flags & SHORTINT)
sl@0: 				*va_arg(ap, short *) = (short)ret;
sl@0: 			else
sl@0: 				*va_arg(ap, int *) = ret;
sl@0: 			continue;	/* no output */
sl@0: 		case 'O':
sl@0: 			flags |= LONGINT;
sl@0: 			/*FALLTHROUGH*/
sl@0: 		case 'o':
sl@0: 			_uquad = UARG();
sl@0: 			base = OCT;
sl@0: 			goto nosign;
sl@0: 		case 'p':
sl@0: 			/*
sl@0: 			 * ``The argument shall be a pointer to void.  The
sl@0: 			 * value of the pointer is converted to a sequence
sl@0: 			 * of printable characters, in an implementation-
sl@0: 			 * defined manner.''
sl@0: 			 *	-- ANSI X3J11
sl@0: 			 */
sl@0: 			/* NOSTRICT */
sl@0: 			_uquad = (u_long)va_arg(ap, void *);
sl@0: 			base = HEX;
sl@0: 			xdigs = "0123456789abcdef";
sl@0: 			flags |= HEXPREFIX;
sl@0: 			ch = 'x';
sl@0: 			goto nosign;
sl@0: 		case 's':
sl@0: 			if ((cp = va_arg(ap, char *)) == NULL)
sl@0: 				cp = "(null)";
sl@0: 			if (prec >= 0) {
sl@0: 				/*
sl@0: 				 * can't use strlen; can only look for the
sl@0: 				 * NUL in the first `prec' characters, and
sl@0: 				 * strlen() will go further.
sl@0: 				 */
sl@0: 				char *p = (char *)memchr(cp, 0, prec);
sl@0: 
sl@0: 				if (p != NULL) {
sl@0: 					size = p - cp;
sl@0: 					if (size > prec)
sl@0: 						size = prec;
sl@0: 				} else
sl@0: 					size = prec;
sl@0: 			} else
sl@0: 				size = strlen(cp);
sl@0: 			sign = '\0';
sl@0: 			break;
sl@0: 		case 'U':
sl@0: 			flags |= LONGINT;
sl@0: 			/*FALLTHROUGH*/
sl@0: 		case 'u':
sl@0: 			_uquad = UARG();
sl@0: 			base = DEC;
sl@0: 			goto nosign;
sl@0: 		case 'X':
sl@0: 			xdigs = "0123456789ABCDEF";
sl@0: 			goto hex;
sl@0: 		case 'x':
sl@0: 			xdigs = "0123456789abcdef";
sl@0: hex:			_uquad = UARG();
sl@0: 			base = HEX;
sl@0: 			/* leading 0x/X only if non-zero */
sl@0: 			if (flags & ALT && _uquad != 0)
sl@0: 				flags |= HEXPREFIX;
sl@0: 
sl@0: 			/* unsigned conversions */
sl@0: nosign:			sign = '\0';
sl@0: 			/*
sl@0: 			 * ``... diouXx conversions ... if a precision is
sl@0: 			 * specified, the 0 flag will be ignored.''
sl@0: 			 *	-- ANSI X3J11
sl@0: 			 */
sl@0: number:			if ((dprec = prec) >= 0)
sl@0: 				flags &= ~ZEROPAD;
sl@0: 
sl@0: 			/*
sl@0: 			 * ``The result of converting a zero value with an
sl@0: 			 * explicit precision of zero is no characters.''
sl@0: 			 *	-- ANSI X3J11
sl@0: 			 */
sl@0: 			cp = buf + BUF;
sl@0: 			if (_uquad != 0 || prec != 0) {
sl@0: 				/*
sl@0: 				 * Unsigned mod is hard, and unsigned mod
sl@0: 				 * by a constant is easier than that by
sl@0: 				 * a variable; hence this switch.
sl@0: 				 */
sl@0: 				switch (base) {
sl@0: 				case OCT:
sl@0: 					do {
sl@0: 						*--cp = (char)to_char(_uquad & 7);
sl@0: 						_uquad >>= 3;
sl@0: 					} while (_uquad);
sl@0: 					/* handle octal leading 0 */
sl@0: 					if (flags & ALT && *cp != '0')
sl@0: 						*--cp = '0';
sl@0: 					break;
sl@0: 
sl@0: 				case DEC:
sl@0: 					/* many numbers are 1 digit */
sl@0: 					while (_uquad >= 10) {
sl@0: 						*--cp = (char)to_char(_uquad % 10);
sl@0: 						_uquad /= 10;
sl@0: 					}
sl@0: 					*--cp = (char)to_char(_uquad);
sl@0: 					break;
sl@0: 
sl@0: 				case HEX:
sl@0: 					do {
sl@0: 						*--cp = xdigs[_uquad & 15];
sl@0: 						_uquad >>= 4;
sl@0: 					} while (_uquad);
sl@0: 					break;
sl@0: 
sl@0: 				default:
sl@0: 					cp = "bug in vfprintf: bad base";
sl@0: 					size = strlen(cp);
sl@0: 					goto skipsize;
sl@0: 				}
sl@0: 			}
sl@0: 			/* Workaround GCC compiler bug: size = buf + BUF - cp */
sl@0: 			{
sl@0: 				char *temp = buf+BUF;
sl@0: 				size = temp - cp;
sl@0: 			}
sl@0: 		skipsize:
sl@0: 			break;
sl@0: 		default:	/* "%?" prints ?, unless ? is NUL */
sl@0: 			if (ch == '\0')
sl@0: 				goto done;
sl@0: 			/* pretend it was %c with argument ch */
sl@0: 			cp = buf;
sl@0: 			*cp = (char)ch;
sl@0: 			size = 1;
sl@0: 			sign = '\0';
sl@0: 			break;
sl@0: 		}
sl@0: 
sl@0: 		/*
sl@0: 		 * All reasonable formats wind up here.  At this point, `cp'
sl@0: 		 * points to a string which (if not flags&LADJUST) should be
sl@0: 		 * padded out to `width' places.  If flags&ZEROPAD, it should
sl@0: 		 * first be prefixed by any sign or other prefix; otherwise,
sl@0: 		 * it should be blank padded before the prefix is emitted.
sl@0: 		 * After any left-hand padding and prefixing, emit zeroes
sl@0: 		 * required by a decimal [diouxX] precision, then print the
sl@0: 		 * string proper, then emit zeroes required by any leftover
sl@0: 		 * floating precision; finally, if LADJUST, pad with blanks.
sl@0: 		 *
sl@0: 		 * Compute actual size, so we know how much to pad.
sl@0: 		 * size excludes decimal prec; realsz includes it.
sl@0: 		 */
sl@0: 		realsz = dprec > size ? dprec : size;
sl@0: 		if (sign)
sl@0: 			realsz++;
sl@0: 		else if (flags & HEXPREFIX)
sl@0: 			realsz+= 2;
sl@0: 
sl@0: 		/* right-adjusting blank padding */
sl@0: 		if ((flags & (LADJUST|ZEROPAD)) == 0)
sl@0: 			PAD(width - realsz, blanks);
sl@0: 
sl@0: 		/* prefix */
sl@0: 		if (sign) {
sl@0: 			PRINT(&sign, 1);
sl@0: 		} else if (flags & HEXPREFIX) {
sl@0: 			ox[0] = '0';
sl@0: 			ox[1] = (char)ch;
sl@0: 			PRINT(ox, 2);
sl@0: 		}
sl@0: 
sl@0: 		/* right-adjusting zero padding */
sl@0: 		if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD)
sl@0: 			PAD(width - realsz, zeroes);
sl@0: 
sl@0: 		/* leading zeroes from decimal precision */
sl@0: 		PAD(dprec - size, zeroes);
sl@0: 
sl@0: 		/* the string or number proper */
sl@0: 		PRINT(cp, size);
sl@0: #if 0
sl@0: 		} else {	/* glue together f_p fragments */
sl@0: 			if (ch >= 'f') {	/* 'f' or 'g' */
sl@0: 				if (_double == 0) {
sl@0: 					/* kludge for __dtoa irregularity */
sl@0: 					PRINT("0", 1);
sl@0: 					if (expt < ndig || (flags & ALT) != 0) {
sl@0: 						PRINT(decimal_point, 1);
sl@0: 						PAD(ndig - 1, zeroes);
sl@0: 					}
sl@0: 				} else if (expt <= 0) {
sl@0: 					PRINT("0", 1);
sl@0: 					PRINT(decimal_point, 1);
sl@0: 					PAD(-expt, zeroes);
sl@0: 					PRINT(cp, ndig);
sl@0: 				} else if (expt >= ndig) {
sl@0: 					PRINT(cp, ndig);
sl@0: 					PAD(expt - ndig, zeroes);
sl@0: 					if (flags & ALT)
sl@0: 						PRINT(".", 1);
sl@0: 				} else {
sl@0: 					PRINT(cp, expt);
sl@0: 					cp += expt;
sl@0: 					PRINT(".", 1);
sl@0: 					PRINT(cp, ndig-expt);
sl@0: 				}
sl@0: 			} else {	/* 'e' or 'E' */
sl@0: 				if (ndig > 1 || flags & ALT) {
sl@0: 					ox[0] = *cp++;
sl@0: 					ox[1] = '.';
sl@0: 					PRINT(ox, 2);
sl@0: 					if (_double || (flags & ALT) == 0) {
sl@0: 						PRINT(cp, ndig-1);
sl@0: 					} else	/* 0.[0..] */
sl@0: 						/* __dtoa irregularity */
sl@0: 						PAD(ndig - 1, zeroes);
sl@0: 				} else	/* XeYYY */
sl@0: 					PRINT(cp, 1);
sl@0: 				PRINT(expstr, expsize);
sl@0: 			}
sl@0: 		}
sl@0: #endif
sl@0: 		/* left-adjusting padding (always blank) */
sl@0: 		if (flags & LADJUST)
sl@0: 			PAD(width - realsz, blanks);
sl@0: 
sl@0: 		/* finally, adjust ret */
sl@0: 		ret += width > realsz ? width : realsz;
sl@0: 
sl@0: 		FLUSH();	/* copy out the I/O vectors */
sl@0: 	}
sl@0: done:
sl@0: 	FLUSH();
sl@0: error:
sl@0: 	return (__sferror(fp) ? EOF : ret);
sl@0: 	/* NOTREACHED */
sl@0: }
sl@0: 
sl@0: #if 0
sl@0: static char *
sl@0: cvt(struct _reent *data,double value,int ndigits, int flags, char *sign, int *decpt, int ch, int *length)
sl@0: {
sl@0: 	int mode, dsgn;
sl@0: 	char *digits, *bp, *rve;
sl@0: 
sl@0: 	if (ch == 'f') {
sl@0: 		mode = 3;		/* ndigits after the decimal point */
sl@0: 	} else {
sl@0: 		/* To obtain ndigits after the decimal point for the 'e' 
sl@0: 		 * and 'E' formats, round to ndigits + 1 significant 
sl@0: 		 * figures.
sl@0: 		 */
sl@0: 		if (ch == 'e' || ch == 'E') {
sl@0: 			ndigits++;
sl@0: 		}
sl@0: 		mode = 2;		/* ndigits significant digits */
sl@0: 	}
sl@0: 
sl@0: 	if (value < 0) {
sl@0: 		value = -value;
sl@0: 		*sign = '-';
sl@0: 	} else
sl@0: 		*sign = '\000';
sl@0: 	digits = _dtoa_r(data, value, mode, ndigits, decpt, &dsgn, &rve);
sl@0: 	if ((ch != 'g' && ch != 'G') || flags & ALT) {	/* Print trailing zeros */
sl@0: 		bp = digits + ndigits;
sl@0: 		if (ch == 'f') {
sl@0: 			if (*digits == '0' && value)
sl@0: 				*decpt = -ndigits + 1;
sl@0: 			bp += *decpt;
sl@0: 		}
sl@0: 		if (value == 0)	/* kludge for __dtoa irregularity */
sl@0: 			rve = bp;
sl@0: 		while (rve < bp)
sl@0: 			*rve++ = '0';
sl@0: 	}
sl@0: 	*length = rve - digits;
sl@0: 	return (digits);
sl@0: }
sl@0: 
sl@0: static int
sl@0: exponent(char *p0, int exp, int fmtch)
sl@0: {
sl@0: 	register char *p, *t;
sl@0: 	char expbuf[MAXEXP];
sl@0: 
sl@0: 	p = p0;
sl@0: 	*p++ = (char)fmtch;
sl@0: 	if (exp < 0) {
sl@0: 		exp = -exp;
sl@0: 		*p++ = '-';
sl@0: 	}
sl@0: 	else
sl@0: 		*p++ = '+';
sl@0: 	t = expbuf + MAXEXP;
sl@0: 	if (exp > 9) {
sl@0: 		do {
sl@0: 			*--t = (char)to_char(exp % 10);
sl@0: 		} while ((exp /= 10) > 9);
sl@0: 		*--t = (char)to_char(exp);
sl@0: 		for (; t < expbuf + MAXEXP; *p++ = *t++);
sl@0: 	}
sl@0: 	else {
sl@0: 		*p++ = '0';
sl@0: 		*p++ = (char)to_char(exp);
sl@0: 	}
sl@0: 	return (p - p0);
sl@0: }
sl@0: #endif