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--- Libc/Libc-166/stdio.subproj/vfprintf.c
+++ /dev/null
@@ -1,1290 +0,0 @@
-/*
- * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-/*
- * Copyright (c) 1990, 1993
- * 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.
- */
-
-/*
- * Actual printf innards.
- *
- * This code is large and complicated...
- */
-
-#include <sys/types.h>
-
-#include <limits.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#if __STDC__
-#include <stdarg.h>
-#else
-#include <varargs.h>
-#endif
-
-#include "local.h"
-#include "fvwrite.h"
-
-/* Define FLOATING_POINT to get floating point. */
-#define FLOATING_POINT
-
-static int __sprint __P((FILE *, struct __suio *));
-static int __sbprintf __P((FILE *, const char *, va_list));
-static char * __ultoa __P((u_long, char *, int, int, char *));
-static char * __uqtoa __P((u_quad_t, char *, int, int, char *));
-static void __find_arguments __P((const char *, va_list, void ***));
-static void __grow_type_table __P((int, unsigned char **, int *));
-
-/*
- * Flush out all the vectors defined by the given uio,
- * then reset it so that it can be reused.
- */
-static int
-__sprint(fp, uio)
- FILE *fp;
- register struct __suio *uio;
-{
- register int err;
-
- if (uio->uio_resid == 0) {
- uio->uio_iovcnt = 0;
- return (0);
- }
- err = __sfvwrite(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
-__sbprintf(fp, fmt, ap)
- register FILE *fp;
- const char *fmt;
- 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 */
-
- /* do the work, then copy any error status */
- ret = vfprintf(&fake, fmt, ap);
- if (ret >= 0 && fflush(&fake))
- ret = EOF;
- if (fake._flags & __SERR)
- fp->_flags |= __SERR;
- return (ret);
-}
-
-/*
- * 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')
-
-/*
- * Convert an unsigned long to ASCII for printf purposes, returning
- * a pointer to the first character of the string representation.
- * Octal numbers can be forced to have a leading zero; hex numbers
- * use the given digits.
- */
-static char *
-__ultoa(val, endp, base, octzero, xdigs)
- register u_long val;
- char *endp;
- int base, octzero;
- char *xdigs;
-{
- register char *cp = endp;
- register long sval;
-
- /*
- * Handle the three cases separately, in the hope of getting
- * better/faster code.
- */
- switch (base) {
- case 10:
- if (val < 10) { /* many numbers are 1 digit */
- *--cp = to_char(val);
- return (cp);
- }
- /*
- * On many machines, unsigned arithmetic is harder than
- * signed arithmetic, so we do at most one unsigned mod and
- * divide; this is sufficient to reduce the range of
- * the incoming value to where signed arithmetic works.
- */
- if (val > LONG_MAX) {
- *--cp = to_char(val % 10);
- sval = val / 10;
- } else
- sval = val;
- do {
- *--cp = to_char(sval % 10);
- sval /= 10;
- } while (sval != 0);
- break;
-
- case 8:
- do {
- *--cp = to_char(val & 7);
- val >>= 3;
- } while (val);
- if (octzero && *cp != '0')
- *--cp = '0';
- break;
-
- case 16:
- do {
- *--cp = xdigs[val & 15];
- val >>= 4;
- } while (val);
- break;
-
- default: /* oops */
- abort();
- }
- return (cp);
-}
-
-/* Identical to __ultoa, but for quads. */
-static char *
-__uqtoa(val, endp, base, octzero, xdigs)
- register u_quad_t val;
- char *endp;
- int base, octzero;
- char *xdigs;
-{
- register char *cp = endp;
- register quad_t sval;
-
- /* quick test for small values; __ultoa is typically much faster */
- /* (perhaps instead we should run until small, then call __ultoa?) */
- if (val <= ULONG_MAX)
- return (__ultoa((u_long)val, endp, base, octzero, xdigs));
- switch (base) {
- case 10:
- if (val < 10) {
- *--cp = to_char(val % 10);
- return (cp);
- }
- if (val > QUAD_MAX) {
- *--cp = to_char(val % 10);
- sval = val / 10;
- } else
- sval = val;
- do {
- *--cp = to_char(sval % 10);
- sval /= 10;
- } while (sval != 0);
- break;
-
- case 8:
- do {
- *--cp = to_char(val & 7);
- val >>= 3;
- } while (val);
- if (octzero && *cp != '0')
- *--cp = '0';
- break;
-
- case 16:
- do {
- *--cp = xdigs[val & 15];
- val >>= 4;
- } while (val);
- break;
-
- default:
- abort();
- }
- return (cp);
-}
-
-#ifdef FLOATING_POINT
-#include <math.h>
-#include "floatio.h"
-
-#define BUF (MAXEXP+MAXFRACT+1) /* + decimal point */
-#define DEFPREC 6
-
-static char *cvt __P((double, int, int, char *, int *, int, int *));
-static int exponent __P((char *, int, int));
-
-#else /* no FLOATING_POINT */
-
-#define BUF 68
-
-#endif /* FLOATING_POINT */
-
-#define STATIC_ARG_TBL_SIZE 8 /* Size of static argument table. */
-
-/*
- * 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 */
-#define QUADINT 0x020 /* quad integer */
-#define SHORTINT 0x040 /* short integer */
-#define ZEROPAD 0x080 /* zero (as opposed to blank) pad */
-#define FPT 0x100 /* Floating point number */
-int
-vfprintf(fp, fmt0, ap)
- FILE *fp;
- const char *fmt0;
- va_list ap;
-{
- register char *fmt; /* format string */
- register int ch; /* character from fmt */
- register int n, n2; /* handy integer (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 */
- 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 softsign; /* temporary negative sign for floats */
- double _double = 0; /* double precision arguments %[eEfgG] */
- int expt; /* integer value of exponent */
- int expsize = 0; /* character count for expstr */
- int ndig; /* actual number of digits returned by cvt */
- char expstr[7]; /* buffer for exponent string */
-#endif
- u_long ulval = 0; /* integer arguments %[diouxX] */
- u_quad_t uqval = 0; /* %q integers */
- int base; /* base for [diouxX] conversion */
- int dprec; /* a copy of prec if [diouxX], 0 otherwise */
- int realsz; /* field size expanded by dprec, sign, etc */
- int size; /* size of converted field or string */
- int prsize; /* max size of printed field */
- 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, %[diouxX], %[eEfgG] */
- char ox[2]; /* space for 0x hex-prefix */
- void **argtable; /* args, built due to positional arg */
- void *statargtable [STATIC_ARG_TBL_SIZE];
- int nextarg; /* 1-based argument index */
- va_list orgap; /* original argument pointer */
-
- /*
- * 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 char blanks[PADSIZE] =
- {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
- static char zeroes[PADSIZE] =
- {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};
-
- /*
- * 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(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(fp, &uio)) \
- goto error; \
- uio.uio_iovcnt = 0; \
- iovp = iov; \
-}
-
- /*
- * Get the argument indexed by nextarg. If the argument table is
- * built, use it to get the argument. If its not, get the next
- * argument (and arguments must be gotten sequentially).
- */
-#define GETARG(type) \
- ((argtable != NULL) ? *((type*)(argtable[nextarg++])) : \
- (nextarg++, va_arg(ap, type)))
-
- /*
- * To extend shorts properly, we need both signed and unsigned
- * argument extraction methods.
- */
-#define SARG() \
- (flags&LONGINT ? GETARG(long) : \
- flags&SHORTINT ? (long)(short)GETARG(int) : \
- (long)GETARG(int))
-#define UARG() \
- (flags&LONGINT ? GETARG(u_long) : \
- flags&SHORTINT ? (u_long)(u_short)GETARG(int) : \
- (u_long)GETARG(u_int))
-
- /*
- * Get * arguments, including the form *nn$. Preserve the nextarg
- * that the argument can be gotten once the type is determined.
- */
-#define GETASTER(val) \
- n2 = 0; \
- cp = fmt; \
- while (is_digit(*cp)) { \
- n2 = 10 * n2 + to_digit(*cp); \
- cp++; \
- } \
- if (*cp == '$') { \
- int hold = nextarg; \
- if (argtable == NULL) { \
- argtable = statargtable; \
- __find_arguments (fmt0, orgap, &argtable); \
- } \
- nextarg = n2; \
- val = GETARG (int); \
- nextarg = hold; \
- fmt = ++cp; \
- } else { \
- val = GETARG (int); \
- }
-
-
- /* FLOCKFILE(fp); */
- /* sorry, fprintf(read_only_file, "") returns EOF, not 0 */
- if (cantwrite(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(fp, fmt0, ap));
- }
-
- fmt = (char *)fmt0;
- argtable = NULL;
- nextarg = 1;
- orgap = ap;
- uio.uio_iov = iovp = iov;
- uio.uio_resid = 0;
- uio.uio_iovcnt = 0;
- ret = 0;
-
- /*
- * Scan the format for conversions (`%' character).
- */
- for (;;) {
- for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++)
- /* void */;
- if ((n = fmt - cp) != 0) {
- if ((unsigned)ret + n > INT_MAX) {
- ret = EOF;
- goto error;
- }
- PRINT(cp, n);
- ret += n;
- }
- if (ch == '\0')
- goto done;
- fmt++; /* skip over '%' */
-
- flags = 0;
- dprec = 0;
- width = 0;
- prec = -1;
- sign = '\0';
-
-rflag: ch = *fmt++;
-reswitch: switch (ch) {
- 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 '*':
- /*
- * ``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.
- */
- GETASTER (width);
- if (width >= 0)
- goto rflag;
- width = -width;
- /* FALLTHROUGH */
- case '-':
- flags |= LADJUST;
- goto rflag;
- case '+':
- sign = '+';
- goto rflag;
- case '.':
- if ((ch = *fmt++) == '*') {
- GETASTER (n);
- prec = n < 0 ? -1 : n;
- 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));
- if (ch == '$') {
- nextarg = n;
- if (argtable == NULL) {
- argtable = statargtable;
- __find_arguments (fmt0, orgap,
- &argtable);
- }
- goto rflag;
- }
- width = n;
- goto reswitch;
-#ifdef FLOATING_POINT
- case 'L':
- flags |= LONGDBL;
- goto rflag;
-#endif
- case 'h':
- flags |= SHORTINT;
- goto rflag;
- case 'l':
- if (flags & LONGINT)
- flags |= QUADINT;
- else
- flags |= LONGINT;
- goto rflag;
- case 'q':
- flags |= QUADINT;
- goto rflag;
- case 'c':
- *(cp = buf) = GETARG(int);
- size = 1;
- sign = '\0';
- break;
- case 'D':
- flags |= LONGINT;
- /*FALLTHROUGH*/
- case 'd':
- case 'i':
- if (flags & QUADINT) {
- uqval = GETARG(quad_t);
- if ((quad_t)uqval < 0) {
- uqval = -uqval;
- sign = '-';
- }
- } else {
- ulval = SARG();
- if ((long)ulval < 0) {
- ulval = -ulval;
- sign = '-';
- }
- }
- base = 10;
- goto number;
-#ifdef FLOATING_POINT
- case 'e':
- case 'E':
- case 'f':
- goto fp_begin;
- case 'g':
- case 'G':
- if (prec == 0)
- prec = 1;
-fp_begin: if (prec == -1)
- prec = DEFPREC;
- if (flags & LONGDBL)
- /* XXX this loses precision. */
- _double = (double)GETARG(long double);
- else
- _double = GETARG(double);
- /* do this before tricky precision changes */
- if (isinf(_double)) {
- if (_double < 0)
- sign = '-';
- cp = "Inf";
- size = 3;
- break;
- }
- if (isnan(_double)) {
- cp = "NaN";
- size = 3;
- break;
- }
- flags |= FPT;
- cp = cvt(_double, prec, flags, &softsign,
- &expt, ch, &ndig);
- if (ch == 'g' || ch == 'G') {
- if (expt <= -4 || expt > prec)
- ch = (ch == 'g') ? 'e' : 'E';
- else
- ch = 'g';
- }
- if (ch <= 'e') { /* '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 + 2;
- } 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':
- if (flags & QUADINT)
- *GETARG(quad_t *) = ret;
- else if (flags & LONGINT)
- *GETARG(long *) = ret;
- else if (flags & SHORTINT)
- *GETARG(short *) = ret;
- else
- *GETARG(int *) = ret;
- continue; /* no output */
- case 'O':
- flags |= LONGINT;
- /*FALLTHROUGH*/
- case 'o':
- if (flags & QUADINT)
- uqval = GETARG(u_quad_t);
- else
- ulval = UARG();
- base = 8;
- 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
- */
- ulval = (u_long)GETARG(void *);
- base = 16;
- xdigs = "0123456789abcdef";
- flags = (flags & ~QUADINT) | HEXPREFIX;
- ch = 'x';
- goto nosign;
- case 's':
- if ((cp = GETARG(char *)) == NULL)
- cp = "(null)";
- 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, (size_t)prec);
-
- if (p != NULL) {
- size = p - cp;
- if (size > prec)
- size = prec;
- } else
- size = prec;
- } else
- size = strlen(cp);
- sign = '\0';
- break;
- case 'U':
- flags |= LONGINT;
- /*FALLTHROUGH*/
- case 'u':
- if (flags & QUADINT)
- uqval = GETARG(u_quad_t);
- else
- ulval = UARG();
- base = 10;
- goto nosign;
- case 'X':
- xdigs = "0123456789ABCDEF";
- goto hex;
- case 'x':
- xdigs = "0123456789abcdef";
-hex: if (flags & QUADINT)
- uqval = GETARG(u_quad_t);
- else
- ulval = UARG();
- base = 16;
- /* leading 0x/X only if non-zero */
- if (flags & ALT &&
- (flags & QUADINT ? uqval != 0 : ulval != 0))
- 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 (flags & QUADINT) {
- if (uqval != 0 || prec != 0)
- cp = __uqtoa(uqval, cp, base,
- flags & ALT, xdigs);
- } else {
- if (ulval != 0 || prec != 0)
- cp = __ultoa(ulval, cp, base,
- flags & ALT, xdigs);
- }
- size = buf + BUF - cp;
- 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.
- *
- * 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++;
- else if (flags & HEXPREFIX)
- realsz += 2;
-
- prsize = width > realsz ? width : realsz;
- if ((unsigned)ret + prsize > INT_MAX) {
- ret = EOF;
- goto error;
- }
-
- /* right-adjusting blank padding */
- if ((flags & (LADJUST|ZEROPAD)) == 0)
- PAD(width - realsz, blanks);
-
- /* prefix */
- if (sign) {
- PRINT(&sign, 1);
- } else if (flags & HEXPREFIX) {
- ox[0] = '0';
- ox[1] = ch;
- 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 (_double == 0) {
- /* kludge for __dtoa irregularity */
- if (expt >= ndig &&
- (flags & ALT) == 0) {
- PRINT("0", 1);
- } else {
- PRINT("0.", 2);
- PAD(ndig - 1, zeroes);
- }
- } else if (expt <= 0) {
- PRINT("0.", 2);
- PAD(-expt, zeroes);
- PRINT(cp, ndig);
- } else if (expt >= ndig) {
- PRINT(cp, ndig);
- PAD(expt - ndig, zeroes);
- if (flags & ALT)
- PRINT(".", 1);
- } else {
- PRINT(cp, expt);
- cp += expt;
- PRINT(".", 1);
- PRINT(cp, ndig-expt);
- }
- } else { /* 'e' or 'E' */
- if (ndig > 1 || flags & ALT) {
- ox[0] = *cp++;
- ox[1] = '.';
- PRINT(ox, 2);
- if (_double) {
- PRINT(cp, ndig-1);
- } else /* 0.[0..] */
- /* __dtoa irregularity */
- PAD(ndig - 1, zeroes);
- } else /* XeYYY */
- PRINT(cp, 1);
- PRINT(expstr, expsize);
- }
- }
-#else
- PRINT(cp, size);
-#endif
- /* left-adjusting padding (always blank) */
- if (flags & LADJUST)
- PAD(width - realsz, blanks);
-
- /* finally, adjust ret */
- ret += prsize;
-
- FLUSH(); /* copy out the I/O vectors */
- }
-done:
- FLUSH();
-error:
- if (__sferror(fp))
- ret = EOF;
- /* FUNLOCKFILE(fp); */
- if ((argtable != NULL) && (argtable != statargtable))
- free (argtable);
- return (ret);
- /* NOTREACHED */
-}
-
-/*
- * Type ids for argument type table.
- */
-#define T_UNUSED 0
-#define T_SHORT 1
-#define T_U_SHORT 2
-#define TP_SHORT 3
-#define T_INT 4
-#define T_U_INT 5
-#define TP_INT 6
-#define T_LONG 7
-#define T_U_LONG 8
-#define TP_LONG 9
-#define T_QUAD 10
-#define T_U_QUAD 11
-#define TP_QUAD 12
-#define T_DOUBLE 13
-#define T_LONG_DOUBLE 14
-#define TP_CHAR 15
-#define TP_VOID 16
-
-/*
- * Find all arguments when a positional parameter is encountered. Returns a
- * table, indexed by argument number, of pointers to each arguments. The
- * initial argument table should be an array of STATIC_ARG_TBL_SIZE entries.
- * It will be replaces with a malloc-ed on if it overflows.
- */
-static void
-__find_arguments (fmt0, ap, argtable)
- const char *fmt0;
- va_list ap;
- void ***argtable;
-{
- register char *fmt; /* format string */
- register int ch; /* character from fmt */
- register int n, n2; /* handy integer (short term usage) */
- register char *cp; /* handy char pointer (short term usage) */
- register int flags; /* flags as above */
- int width; /* width from format (%8d), or 0 */
- unsigned char *typetable; /* table of types */
- unsigned char stattypetable [STATIC_ARG_TBL_SIZE];
- int tablesize; /* current size of type table */
- int tablemax; /* largest used index in table */
- int nextarg; /* 1-based argument index */
-
- /*
- * Add an argument type to the table, expanding if necessary.
- */
-#define ADDTYPE(type) \
- ((nextarg >= tablesize) ? \
- __grow_type_table(nextarg, &typetable, &tablesize) : 0, \
- typetable[nextarg++] = type, \
- (nextarg > tablemax) ? tablemax = nextarg : 0)
-
-#define ADDSARG() \
- ((flags&LONGINT) ? ADDTYPE(T_LONG) : \
- ((flags&SHORTINT) ? ADDTYPE(T_SHORT) : ADDTYPE(T_INT)))
-
-#define ADDUARG() \
- ((flags&LONGINT) ? ADDTYPE(T_U_LONG) : \
- ((flags&SHORTINT) ? ADDTYPE(T_U_SHORT) : ADDTYPE(T_U_INT)))
-
- /*
- * Add * arguments to the type array.
- */
-#define ADDASTER() \
- n2 = 0; \
- cp = fmt; \
- while (is_digit(*cp)) { \
- n2 = 10 * n2 + to_digit(*cp); \
- cp++; \
- } \
- if (*cp == '$') { \
- int hold = nextarg; \
- nextarg = n2; \
- ADDTYPE (T_INT); \
- nextarg = hold; \
- fmt = ++cp; \
- } else { \
- ADDTYPE (T_INT); \
- }
- fmt = (char *)fmt0;
- typetable = stattypetable;
- tablesize = STATIC_ARG_TBL_SIZE;
- tablemax = 0;
- nextarg = 1;
- memset (typetable, T_UNUSED, STATIC_ARG_TBL_SIZE);
-
- /*
- * Scan the format for conversions (`%' character).
- */
- for (;;) {
- for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++)
- /* void */;
- if (ch == '\0')
- goto done;
- fmt++; /* skip over '%' */
-
- flags = 0;
- width = 0;
-
-rflag: ch = *fmt++;
-reswitch: switch (ch) {
- case ' ':
- case '#':
- goto rflag;
- case '*':
- ADDASTER ();
- goto rflag;
- case '-':
- case '+':
- goto rflag;
- case '.':
- if ((ch = *fmt++) == '*') {
- ADDASTER ();
- goto rflag;
- }
- while (is_digit(ch)) {
- ch = *fmt++;
- }
- goto reswitch;
- case '0':
- 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));
- if (ch == '$') {
- nextarg = n;
- goto rflag;
- }
- width = n;
- goto reswitch;
-#ifdef FLOATING_POINT
- case 'L':
- flags |= LONGDBL;
- goto rflag;
-#endif
- case 'h':
- flags |= SHORTINT;
- goto rflag;
- case 'l':
- if (flags & LONGINT)
- flags |= QUADINT;
- else
- flags |= LONGINT;
- goto rflag;
- case 'q':
- flags |= QUADINT;
- goto rflag;
- case 'c':
- ADDTYPE(T_INT);
- break;
- case 'D':
- flags |= LONGINT;
- /*FALLTHROUGH*/
- case 'd':
- case 'i':
- if (flags & QUADINT) {
- ADDTYPE(T_QUAD);
- } else {
- ADDSARG();
- }
- break;
-#ifdef FLOATING_POINT
- case 'e':
- case 'E':
- case 'f':
- case 'g':
- case 'G':
- if (flags & LONGDBL)
- ADDTYPE(T_LONG_DOUBLE);
- else
- ADDTYPE(T_DOUBLE);
- break;
-#endif /* FLOATING_POINT */
- case 'n':
- if (flags & QUADINT)
- ADDTYPE(TP_QUAD);
- else if (flags & LONGINT)
- ADDTYPE(TP_LONG);
- else if (flags & SHORTINT)
- ADDTYPE(TP_SHORT);
- else
- ADDTYPE(TP_INT);
- continue; /* no output */
- case 'O':
- flags |= LONGINT;
- /*FALLTHROUGH*/
- case 'o':
- if (flags & QUADINT)
- ADDTYPE(T_U_QUAD);
- else
- ADDUARG();
- break;
- case 'p':
- ADDTYPE(TP_VOID);
- break;
- case 's':
- ADDTYPE(TP_CHAR);
- break;
- case 'U':
- flags |= LONGINT;
- /*FALLTHROUGH*/
- case 'u':
- if (flags & QUADINT)
- ADDTYPE(T_U_QUAD);
- else
- ADDUARG();
- break;
- case 'X':
- case 'x':
- if (flags & QUADINT)
- ADDTYPE(T_U_QUAD);
- else
- ADDUARG();
- break;
- default: /* "%?" prints ?, unless ? is NUL */
- if (ch == '\0')
- goto done;
- break;
- }
- }
-done:
- /*
- * Build the argument table.
- */
- if (tablemax >= STATIC_ARG_TBL_SIZE) {
- *argtable = (void **)
- malloc (sizeof (void *) * (tablemax + 1));
- }
-
- (*argtable) [0] = NULL;
- for (n = 1; n <= tablemax; n++) {
- switch (typetable [n]) {
- case T_UNUSED:
- (*argtable) [n] = (void *) &va_arg (ap, int);
- break;
- case T_SHORT:
- (*argtable) [n] = (void *) &va_arg (ap, int);
- break;
- case T_U_SHORT:
- (*argtable) [n] = (void *) &va_arg (ap, int);
- break;
- case TP_SHORT:
- (*argtable) [n] = (void *) &va_arg (ap, short *);
- break;
- case T_INT:
- (*argtable) [n] = (void *) &va_arg (ap, int);
- break;
- case T_U_INT:
- (*argtable) [n] = (void *) &va_arg (ap, unsigned int);
- break;
- case TP_INT:
- (*argtable) [n] = (void *) &va_arg (ap, int *);
- break;
- case T_LONG:
- (*argtable) [n] = (void *) &va_arg (ap, long);
- break;
- case T_U_LONG:
- (*argtable) [n] = (void *) &va_arg (ap, unsigned long);
- break;
- case TP_LONG:
- (*argtable) [n] = (void *) &va_arg (ap, long *);
- break;
- case T_QUAD:
- (*argtable) [n] = (void *) &va_arg (ap, quad_t);
- break;
- case T_U_QUAD:
- (*argtable) [n] = (void *) &va_arg (ap, u_quad_t);
- break;
- case TP_QUAD:
- (*argtable) [n] = (void *) &va_arg (ap, quad_t *);
- break;
- case T_DOUBLE:
- (*argtable) [n] = (void *) &va_arg (ap, double);
- break;
- case T_LONG_DOUBLE:
- (*argtable) [n] = (void *) &va_arg (ap, long double);
- break;
- case TP_CHAR:
- (*argtable) [n] = (void *) &va_arg (ap, char *);
- break;
- case TP_VOID:
- (*argtable) [n] = (void *) &va_arg (ap, void *);
- break;
- }
- }
-
- if ((typetable != NULL) && (typetable != stattypetable))
- free (typetable);
-}
-
-/*
- * Increase the size of the type table.
- */
-static void
-__grow_type_table (nextarg, typetable, tablesize)
- int nextarg;
- unsigned char **typetable;
- int *tablesize;
-{
- unsigned char *oldtable = *typetable;
- int newsize = *tablesize * 2;
-
- if (*tablesize == STATIC_ARG_TBL_SIZE) {
- *typetable = (unsigned char *)
- malloc (sizeof (unsigned char) * newsize);
- bcopy (oldtable, *typetable, *tablesize);
- } else {
- *typetable = (unsigned char *)
- realloc (typetable, sizeof (unsigned char) * newsize);
-
- }
- memset (&typetable [*tablesize], T_UNUSED, (newsize - *tablesize));
-
- *tablesize = newsize;
-}
-
-
-#ifdef FLOATING_POINT
-
-extern char *__dtoa __P((double, int, int, int *, int *, char **));
-
-static char *
-cvt(value, ndigits, flags, sign, decpt, ch, length)
- double value;
- int ndigits, flags, *decpt, ch, *length;
- char *sign;
-{
- int mode, dsgn;
- char *digits, *bp, *rve;
-
- if (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 */
- }
- if (value < 0) {
- value = -value;
- *sign = '-';
- } else
- *sign = '\000';
- digits = __dtoa(value, mode, ndigits, decpt, &dsgn, &rve);
- if ((ch != 'g' && ch != 'G') || flags & ALT) {
- /* print trailing zeros */
- bp = digits + ndigits;
- if (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(p0, exp, fmtch)
- char *p0;
- int exp, fmtch;
-{
- register char *p, *t;
- char expbuf[MAXEXP];
-
- p = p0;
- *p++ = fmtch;
- if (exp < 0) {
- exp = -exp;
- *p++ = '-';
- }
- else
- *p++ = '+';
- t = expbuf + MAXEXP;
- if (exp > 9) {
- do {
- *--t = to_char(exp % 10);
- } while ((exp /= 10) > 9);
- *--t = to_char(exp);
- for (; t < expbuf + MAXEXP; *p++ = *t++);
- }
- else {
- *p++ = '0';
- *p++ = to_char(exp);
- }
- return (p - p0);
-}
-#endif /* FLOATING_POINT */