#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)vfprintf.c 8.1 (Berkeley) 6/4/93";
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/lib/libc/stdio/vfprintf.c,v 1.90 2009/02/28 06:06:57 das Exp $");
#include "namespace.h"
#include <sys/types.h>
#include <ctype.h>
#include <limits.h>
#include <locale.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#include <printf.h>
#include <stdarg.h>
#include "un-namespace.h"
#include "libc_private.h"
#include "local.h"
#include "fvwrite.h"
#include "printflocal.h"
static int __sprint(FILE *, struct __suio *);
static int __sbprintf(FILE *, const char *, va_list) __printflike(2, 0)
__noinline;
static char *__wcsconv(wchar_t *, int);
#define CHAR char
#include "printfcommon.h"
struct grouping_state {
char *thousands_sep;
int thousep_len;
const char *grouping;
int lead;
int nseps;
int nrepeats;
};
static int
grouping_init(struct grouping_state *gs, int ndigits)
{
struct lconv *locale;
locale = localeconv();
gs->grouping = locale->grouping;
gs->thousands_sep = locale->thousands_sep;
gs->thousep_len = strlen(gs->thousands_sep);
gs->nseps = gs->nrepeats = 0;
gs->lead = ndigits;
while (*gs->grouping != CHAR_MAX) {
if (gs->lead <= *gs->grouping)
break;
gs->lead -= *gs->grouping;
if (*(gs->grouping+1)) {
gs->nseps++;
gs->grouping++;
} else
gs->nrepeats++;
}
return ((gs->nseps + gs->nrepeats) * gs->thousep_len);
}
static int
grouping_print(struct grouping_state *gs, struct io_state *iop,
const CHAR *cp, const CHAR *ep)
{
const CHAR *cp0 = cp;
if (io_printandpad(iop, cp, ep, gs->lead, zeroes))
return (-1);
cp += gs->lead;
while (gs->nseps > 0 || gs->nrepeats > 0) {
if (gs->nrepeats > 0)
gs->nrepeats--;
else {
gs->grouping--;
gs->nseps--;
}
if (io_print(iop, gs->thousands_sep, gs->thousep_len))
return (-1);
if (io_printandpad(iop, cp, ep, *gs->grouping, zeroes))
return (-1);
cp += *gs->grouping;
}
if (cp > ep)
cp = ep;
return (cp - cp0);
}
static int
__sprint(FILE *fp, struct __suio *uio)
{
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);
}
static int
__sbprintf(FILE *fp, const char *fmt, va_list ap)
{
int ret;
FILE fake;
unsigned char buf[BUFSIZ];
if (prepwrite(fp) != 0)
return (EOF);
fake._flags = fp->_flags & ~__SNBF;
fake._file = fp->_file;
fake._cookie = fp->_cookie;
fake._write = fp->_write;
fake._orientation = fp->_orientation;
fake._mbstate = fp->_mbstate;
fake._bf._base = fake._p = buf;
fake._bf._size = fake._w = sizeof(buf);
fake._lbfsize = 0;
ret = __vfprintf(&fake, fmt, ap);
if (ret >= 0 && __fflush(&fake))
ret = EOF;
if (fake._flags & __SERR)
fp->_flags |= __SERR;
return (ret);
}
static char *
__wcsconv(wchar_t *wcsarg, int prec)
{
static const mbstate_t initial;
mbstate_t mbs;
char buf[MB_LEN_MAX];
wchar_t *p;
char *convbuf;
size_t clen, nbytes;
if (prec < 0) {
p = wcsarg;
mbs = initial;
nbytes = wcsrtombs(NULL, (const wchar_t **)&p, 0, &mbs);
if (nbytes == (size_t)-1)
return (NULL);
} else {
if (prec < 128)
nbytes = prec;
else {
nbytes = 0;
p = wcsarg;
mbs = initial;
for (;;) {
clen = wcrtomb(buf, *p++, &mbs);
if (clen == 0 || clen == (size_t)-1 ||
nbytes + clen > prec)
break;
nbytes += clen;
}
}
}
if ((convbuf = malloc(nbytes + 1)) == NULL)
return (NULL);
p = wcsarg;
mbs = initial;
if ((nbytes = wcsrtombs(convbuf, (const wchar_t **)&p,
nbytes, &mbs)) == (size_t)-1) {
free(convbuf);
return (NULL);
}
convbuf[nbytes] = '\0';
return (convbuf);
}
int
vfprintf(FILE * __restrict fp, const char * __restrict fmt0, va_list ap)
{
int ret;
FLOCKFILE(fp);
if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) &&
fp->_file >= 0)
ret = __sbprintf(fp, fmt0, ap);
else
ret = __vfprintf(fp, fmt0, ap);
FUNLOCKFILE(fp);
return (ret);
}
#if UINTMAX_MAX <= UINT64_MAX
#define BUF 32
#else
#error "BUF must be large enough to format a uintmax_t"
#endif
int
__vfprintf(FILE *fp, const char *fmt0, va_list ap)
{
char *fmt;
int ch;
int n, n2;
char *cp;
int flags;
int ret;
int width;
int prec;
char sign;
struct grouping_state gs;
#ifndef NO_FLOATING_POINT
char *decimal_point;
int decpt_len;
int signflag;
union {
double dbl;
long double ldbl;
} fparg;
int expt;
char expchar;
char *dtoaend;
int expsize;
int ndig;
char expstr[MAXEXPDIG+2];
char *dtoaresult;
#endif
u_long ulval;
uintmax_t ujval;
int base;
int dprec;
int realsz;
int size;
int prsize;
const char *xdigs;
struct io_state io;
char buf[BUF];
char ox[2];
union arg *argtable;
union arg statargtable [STATIC_ARG_TBL_SIZE];
int nextarg;
va_list orgap;
char *convbuf;
static const char xdigs_lower[16] = "0123456789abcdef";
static const char xdigs_upper[16] = "0123456789ABCDEF";
#define PRINT(ptr, len) { \
if (io_print(&io, (ptr), (len))) \
goto error; \
}
#define PAD(howmany, with) { \
if (io_pad(&io, (howmany), (with))) \
goto error; \
}
#define PRINTANDPAD(p, ep, len, with) { \
if (io_printandpad(&io, (p), (ep), (len), (with))) \
goto error; \
}
#define FLUSH() { \
if (io_flush(&io)) \
goto error; \
}
#define GETARG(type) \
((argtable != NULL) ? *((type*)(&argtable[nextarg++])) : \
(nextarg++, va_arg(ap, type)))
#define SARG() \
(flags&LONGINT ? GETARG(long) : \
flags&SHORTINT ? (long)(short)GETARG(int) : \
flags&CHARINT ? (long)(signed char)GETARG(int) : \
(long)GETARG(int))
#define UARG() \
(flags&LONGINT ? GETARG(u_long) : \
flags&SHORTINT ? (u_long)(u_short)GETARG(int) : \
flags&CHARINT ? (u_long)(u_char)GETARG(int) : \
(u_long)GETARG(u_int))
#define INTMAX_SIZE (INTMAXT|SIZET|PTRDIFFT|LLONGINT)
#define SJARG() \
(flags&INTMAXT ? GETARG(intmax_t) : \
flags&SIZET ? (intmax_t)GETARG(ssize_t) : \
flags&PTRDIFFT ? (intmax_t)GETARG(ptrdiff_t) : \
(intmax_t)GETARG(long long))
#define UJARG() \
(flags&INTMAXT ? GETARG(uintmax_t) : \
flags&SIZET ? (uintmax_t)GETARG(size_t) : \
flags&PTRDIFFT ? (uintmax_t)GETARG(ptrdiff_t) : \
(uintmax_t)GETARG(unsigned long long))
#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; \
if (__find_arguments (fmt0, orgap, &argtable)) { \
ret = EOF; \
goto error; \
} \
} \
nextarg = n2; \
val = GETARG (int); \
nextarg = hold; \
fmt = ++cp; \
} else { \
val = GETARG (int); \
}
if (__use_xprintf == 0 && getenv("USE_XPRINTF"))
__use_xprintf = 1;
if (__use_xprintf > 0)
return (__xvprintf(fp, fmt0, ap));
if (prepwrite(fp) != 0)
return (EOF);
convbuf = NULL;
fmt = (char *)fmt0;
argtable = NULL;
nextarg = 1;
va_copy(orgap, ap);
io_init(&io, fp);
ret = 0;
#ifndef NO_FLOATING_POINT
dtoaresult = NULL;
decimal_point = localeconv()->decimal_point;
decpt_len = (decimal_point[1] == '\0' ? 1 : strlen(decimal_point));
#endif
for (;;) {
for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++)
;
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++;
flags = 0;
dprec = 0;
width = 0;
prec = -1;
gs.grouping = NULL;
sign = '\0';
ox[1] = '\0';
rflag: ch = *fmt++;
reswitch: switch (ch) {
case ' ':
if (!sign)
sign = ' ';
goto rflag;
case '#':
flags |= ALT;
goto rflag;
case '*':
GETASTER (width);
if (width >= 0)
goto rflag;
width = -width;
case '-':
flags |= LADJUST;
goto rflag;
case '+':
sign = '+';
goto rflag;
case '\'':
flags |= GROUPING;
goto rflag;
case '.':
if ((ch = *fmt++) == '*') {
GETASTER (prec);
goto rflag;
}
prec = 0;
while (is_digit(ch)) {
prec = 10 * prec + to_digit(ch);
ch = *fmt++;
}
goto reswitch;
case '0':
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;
if (__find_arguments (fmt0, orgap,
&argtable)) {
ret = EOF;
goto error;
}
}
goto rflag;
}
width = n;
goto reswitch;
#ifndef NO_FLOATING_POINT
case 'L':
flags |= LONGDBL;
goto rflag;
#endif
case 'h':
if (flags & SHORTINT) {
flags &= ~SHORTINT;
flags |= CHARINT;
} else
flags |= SHORTINT;
goto rflag;
case 'j':
flags |= INTMAXT;
goto rflag;
case 'l':
if (flags & LONGINT) {
flags &= ~LONGINT;
flags |= LLONGINT;
} else
flags |= LONGINT;
goto rflag;
case 'q':
flags |= LLONGINT;
goto rflag;
case 't':
flags |= PTRDIFFT;
goto rflag;
case 'z':
flags |= SIZET;
goto rflag;
case 'C':
flags |= LONGINT;
case 'c':
if (flags & LONGINT) {
static const mbstate_t initial;
mbstate_t mbs;
size_t mbseqlen;
mbs = initial;
mbseqlen = wcrtomb(cp = buf,
(wchar_t)GETARG(wint_t), &mbs);
if (mbseqlen == (size_t)-1) {
fp->_flags |= __SERR;
goto error;
}
size = (int)mbseqlen;
} else {
*(cp = buf) = GETARG(int);
size = 1;
}
sign = '\0';
break;
case 'D':
flags |= LONGINT;
case 'd':
case 'i':
if (flags & INTMAX_SIZE) {
ujval = SJARG();
if ((intmax_t)ujval < 0) {
ujval = -ujval;
sign = '-';
}
} else {
ulval = SARG();
if ((long)ulval < 0) {
ulval = -ulval;
sign = '-';
}
}
base = 10;
goto number;
#ifndef NO_FLOATING_POINT
case 'a':
case 'A':
if (ch == 'a') {
ox[1] = 'x';
xdigs = xdigs_lower;
expchar = 'p';
} else {
ox[1] = 'X';
xdigs = xdigs_upper;
expchar = 'P';
}
if (prec >= 0)
prec++;
if (dtoaresult != NULL)
freedtoa(dtoaresult);
if (flags & LONGDBL) {
fparg.ldbl = GETARG(long double);
dtoaresult = cp =
__hldtoa(fparg.ldbl, xdigs, prec,
&expt, &signflag, &dtoaend);
} else {
fparg.dbl = GETARG(double);
dtoaresult = cp =
__hdtoa(fparg.dbl, xdigs, prec,
&expt, &signflag, &dtoaend);
}
if (prec < 0)
prec = dtoaend - cp;
if (expt == INT_MAX)
ox[1] = '\0';
goto fp_common;
case 'e':
case 'E':
expchar = ch;
if (prec < 0)
prec = DEFPREC + 1;
else
prec++;
goto fp_begin;
case 'f':
case 'F':
expchar = '\0';
goto fp_begin;
case 'g':
case 'G':
expchar = ch - ('g' - 'e');
if (prec == 0)
prec = 1;
fp_begin:
if (prec < 0)
prec = DEFPREC;
if (dtoaresult != NULL)
freedtoa(dtoaresult);
if (flags & LONGDBL) {
fparg.ldbl = GETARG(long double);
dtoaresult = cp =
__ldtoa(&fparg.ldbl, expchar ? 2 : 3, prec,
&expt, &signflag, &dtoaend);
} else {
fparg.dbl = GETARG(double);
dtoaresult = cp =
dtoa(fparg.dbl, expchar ? 2 : 3, prec,
&expt, &signflag, &dtoaend);
if (expt == 9999)
expt = INT_MAX;
}
fp_common:
if (signflag)
sign = '-';
if (expt == INT_MAX) {
if (*cp == 'N') {
cp = (ch >= 'a') ? "nan" : "NAN";
sign = '\0';
} else
cp = (ch >= 'a') ? "inf" : "INF";
size = 3;
flags &= ~ZEROPAD;
break;
}
flags |= FPT;
ndig = dtoaend - cp;
if (ch == 'g' || ch == 'G') {
if (expt > -4 && expt <= prec) {
expchar = '\0';
if (flags & ALT)
prec -= expt;
else
prec = ndig - expt;
if (prec < 0)
prec = 0;
} else {
if (!(flags & ALT))
prec = ndig;
}
}
if (expchar) {
expsize = exponent(expstr, expt - 1, expchar);
size = expsize + prec;
if (prec > 1 || flags & ALT)
size += decpt_len;
} else {
if (expt > 0)
size = expt;
else
size = 1;
if (prec || flags & ALT)
size += prec + decpt_len;
if ((flags & GROUPING) && expt > 0)
size += grouping_init(&gs, expt);
}
break;
#endif
case 'n':
if (flags & LLONGINT)
*GETARG(long long *) = ret;
else if (flags & SIZET)
*GETARG(ssize_t *) = (ssize_t)ret;
else if (flags & PTRDIFFT)
*GETARG(ptrdiff_t *) = ret;
else if (flags & INTMAXT)
*GETARG(intmax_t *) = ret;
else if (flags & LONGINT)
*GETARG(long *) = ret;
else if (flags & SHORTINT)
*GETARG(short *) = ret;
else if (flags & CHARINT)
*GETARG(signed char *) = ret;
else
*GETARG(int *) = ret;
continue;
case 'O':
flags |= LONGINT;
case 'o':
if (flags & INTMAX_SIZE)
ujval = UJARG();
else
ulval = UARG();
base = 8;
goto nosign;
case 'p':
ujval = (uintmax_t)(uintptr_t)GETARG(void *);
base = 16;
xdigs = xdigs_lower;
flags = flags | INTMAXT;
ox[1] = 'x';
goto nosign;
case 'S':
flags |= LONGINT;
case 's':
if (flags & LONGINT) {
wchar_t *wcp;
if (convbuf != NULL)
free(convbuf);
if ((wcp = GETARG(wchar_t *)) == NULL)
cp = "(null)";
else {
convbuf = __wcsconv(wcp, prec);
if (convbuf == NULL) {
fp->_flags |= __SERR;
goto error;
}
cp = convbuf;
}
} else if ((cp = GETARG(char *)) == NULL)
cp = "(null)";
size = (prec >= 0) ? strnlen(cp, prec) : strlen(cp);
sign = '\0';
break;
case 'U':
flags |= LONGINT;
case 'u':
if (flags & INTMAX_SIZE)
ujval = UJARG();
else
ulval = UARG();
base = 10;
goto nosign;
case 'X':
xdigs = xdigs_upper;
goto hex;
case 'x':
xdigs = xdigs_lower;
hex:
if (flags & INTMAX_SIZE)
ujval = UJARG();
else
ulval = UARG();
base = 16;
if (flags & ALT &&
(flags & INTMAX_SIZE ? ujval != 0 : ulval != 0))
ox[1] = ch;
flags &= ~GROUPING;
nosign: sign = '\0';
number: if ((dprec = prec) >= 0)
flags &= ~ZEROPAD;
cp = buf + BUF;
if (flags & INTMAX_SIZE) {
if (ujval != 0 || prec != 0 ||
(flags & ALT && base == 8))
cp = __ujtoa(ujval, cp, base,
flags & ALT, xdigs);
} else {
if (ulval != 0 || prec != 0 ||
(flags & ALT && base == 8))
cp = __ultoa(ulval, cp, base,
flags & ALT, xdigs);
}
size = buf + BUF - cp;
if (size > BUF)
abort();
if ((flags & GROUPING) && size != 0)
size += grouping_init(&gs, size);
break;
default:
if (ch == '\0')
goto done;
cp = buf;
*cp = ch;
size = 1;
sign = '\0';
break;
}
realsz = dprec > size ? dprec : size;
if (sign)
realsz++;
if (ox[1])
realsz += 2;
prsize = width > realsz ? width : realsz;
if ((unsigned)ret + prsize > INT_MAX) {
ret = EOF;
goto error;
}
if ((flags & (LADJUST|ZEROPAD)) == 0)
PAD(width - realsz, blanks);
if (sign)
PRINT(&sign, 1);
if (ox[1]) {
ox[0] = '0';
PRINT(ox, 2);
}
if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD)
PAD(width - realsz, zeroes);
#ifndef NO_FLOATING_POINT
if ((flags & FPT) == 0) {
#endif
PAD(dprec - size, zeroes);
if (gs.grouping) {
if (grouping_print(&gs, &io, cp, buf+BUF) < 0)
goto error;
} else {
PRINT(cp, size);
}
#ifndef NO_FLOATING_POINT
} else {
if (!expchar) {
if (expt <= 0) {
PRINT(zeroes, 1);
if (prec || flags & ALT)
PRINT(decimal_point,decpt_len);
PAD(-expt, zeroes);
prec += expt;
} else {
if (gs.grouping) {
n = grouping_print(&gs, &io,
cp, dtoaend);
if (n < 0)
goto error;
cp += n;
} else {
PRINTANDPAD(cp, dtoaend,
expt, zeroes);
cp += expt;
}
if (prec || flags & ALT)
PRINT(decimal_point,decpt_len);
}
PRINTANDPAD(cp, dtoaend, prec, zeroes);
} else {
if (prec > 1 || flags & ALT) {
PRINT(cp++, 1);
PRINT(decimal_point, decpt_len);
PRINT(cp, ndig-1);
PAD(prec - ndig, zeroes);
} else
PRINT(cp, 1);
PRINT(expstr, expsize);
}
}
#endif
if (flags & LADJUST)
PAD(width - realsz, blanks);
ret += prsize;
FLUSH();
}
done:
FLUSH();
error:
va_end(orgap);
#ifndef NO_FLOATING_POINT
if (dtoaresult != NULL)
freedtoa(dtoaresult);
#endif
if (convbuf != NULL)
free(convbuf);
if (__sferror(fp))
ret = EOF;
if ((argtable != NULL) && (argtable != statargtable))
free (argtable);
return (ret);
}