#include <config.h>
#include <sys/types.h>
#include <sys/param.h>
#include <stdio.h>
#ifdef STDC_HEADERS
# include <stdlib.h>
# include <stddef.h>
#else
# ifdef HAVE_STDLIB_H
# include <stdlib.h>
# endif
#endif
#ifdef HAVE_STDINT_H
# include <stdint.h>
#endif
#ifdef HAVE_STRING_H
# if defined(HAVE_MEMORY_H) && !defined(STDC_HEADERS)
# include <memory.h>
# endif
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#if defined(HAVE_MALLOC_H) && !defined(STDC_HEADERS)
# include <malloc.h>
#endif
#include <limits.h>
#ifdef __STDC__
# include <stdarg.h>
#else
# include <varargs.h>
#endif
#include <compat.h>
static int xxxprintf __P((char **, size_t, int, const char *, va_list));
#ifndef ULONG_MAX
# define ULONG_MAX ((unsigned long)-1)
#endif
#ifndef LONG_MAX
# define LONG_MAX (ULONG_MAX / 2)
#endif
#ifdef HAVE_LONG_LONG_INT
# ifndef ULLONG_MAX
# ifdef UQUAD_MAX
# define ULLONG_MAX UQUAD_MAX
# else
# define ULLONG_MAX ((unsigned long long)-1)
# endif
# endif
# ifndef LLONG_MAX
# ifdef QUAD_MAX
# define LLONG_MAX QUAD_MAX
# else
# define LLONG_MAX (ULLONG_MAX / 2)
# endif
# endif
#endif
#define to_digit(c) ((c) - '0')
#define is_digit(c) ((unsigned int)to_digit(c) <= 9)
#define to_char(n) ((n) + '0')
#define ALT 0x001
#define HEXPREFIX 0x002
#define LADJUST 0x004
#define LONGDBL 0x008
#define LONGINT 0x010
#define QUADINT 0x020
#define SHORTINT 0x040
#define ZEROPAD 0x080
#define BUF 68
#ifndef HAVE_MEMCHR
void *
memchr(s, c, n)
const void *s;
unsigned char c;
size_t n;
{
if (n != 0) {
const unsigned char *p = s;
do {
if (*p++ == c)
return ((void *)(p - 1));
} while (--n != 0);
}
return (NULL);
}
#endif
static char *
__ultoa(val, endp, base, octzero, xdigs)
unsigned long val;
char *endp;
int base, octzero;
char *xdigs;
{
char *cp = endp;
long sval;
switch (base) {
case 10:
if (val < 10) {
*--cp = to_char(val);
return (cp);
}
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:
abort();
}
return (cp);
}
#ifdef HAVE_LONG_LONG_INT
# if SIZEOF_LONG_INT == 8
# define __uqtoa(v, e, b, o, x) __ultoa((unsigned long)(v), (e), (b), (o), (x))
# else
static char *
__uqtoa(val, endp, base, octzero, xdigs)
unsigned long long val;
char *endp;
int base, octzero;
char *xdigs;
{
char *cp = endp;
long long sval;
if (val <= (unsigned long long)ULONG_MAX)
return (__ultoa((unsigned long)val, endp, base, octzero, xdigs));
switch (base) {
case 10:
if (val < 10) {
*--cp = to_char(val % 10);
return (cp);
}
if (val > LLONG_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);
}
# endif
#endif
static int
xxxprintf(strp, strsize, alloc, fmt0, ap)
char **strp;
size_t strsize;
int alloc;
const char *fmt0;
va_list ap;
{
char *fmt;
int ch;
int n;
char *cp;
int flags;
int ret;
int width;
int prec;
char sign;
unsigned long ulval;
#ifdef HAVE_LONG_LONG_INT
unsigned long long uqval;
#endif
int base;
int dprec;
int fieldsz;
int realsz;
int size;
char *xdigs;
char buf[BUF];
char ox[2];
char *str;
char *estr;
#define PADSIZE 16
static char blanks[PADSIZE] =
{' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
static char zeroes[PADSIZE] =
{'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};
#define PRINT(ptr, len) do { \
const char *p = ptr; \
const char *endp = ptr + len; \
while (p < endp && (str < estr || alloc)) { \
if (alloc && str >= estr) { \
char *t; \
strsize = (strsize << 1) + 1; \
if (!(t = (char *)realloc(*strp, strsize))) { \
free(str); \
*strp = NULL; \
ret = -1; \
goto done; \
} \
str = t + (str - *strp); \
estr = t + strsize - 1; \
*strp = t; \
} \
*str++ = *p++; \
} \
} while (0)
#define PAD(howmany, with) do { \
if ((n = (howmany)) > 0) { \
while (n > PADSIZE) { \
PRINT(with, PADSIZE); \
n -= PADSIZE; \
} \
PRINT(with, n); \
} \
} while (0)
#define SARG() \
(flags&LONGINT ? va_arg(ap, long) : \
flags&SHORTINT ? (long)(short)va_arg(ap, int) : \
(long)va_arg(ap, int))
#define UARG() \
(flags&LONGINT ? va_arg(ap, unsigned long) : \
flags&SHORTINT ? (unsigned long)(unsigned short)va_arg(ap, int) : \
(unsigned long)va_arg(ap, unsigned int))
fmt = (char *)fmt0;
ret = 0;
if (alloc) {
strsize = 128;
*strp = str = (char *)malloc(strsize);
if (str == NULL) {
ret = -1;
goto done;
}
estr = str + 127;
} else {
str = *strp;
if (strsize)
estr = str + strsize - 1;
else
estr = NULL;
}
for (;;) {
for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++)
;
if ((n = fmt - cp) != 0) {
PRINT(cp, n);
ret += n;
}
if (ch == '\0')
goto done;
fmt++;
flags = 0;
dprec = 0;
width = 0;
prec = -1;
sign = '\0';
rflag: ch = *fmt++;
reswitch: switch (ch) {
case ' ':
if (!sign)
sign = ' ';
goto rflag;
case '#':
flags |= ALT;
goto rflag;
case '*':
if ((width = va_arg(ap, int)) >= 0)
goto rflag;
width = -width;
case '-':
flags |= LADJUST;
goto rflag;
case '+':
sign = '+';
goto rflag;
case '.':
if ((ch = *fmt++) == '*') {
n = va_arg(ap, int);
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':
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));
width = n;
goto reswitch;
case 'h':
flags |= SHORTINT;
goto rflag;
case 'l':
flags |= LONGINT;
goto rflag;
#ifdef HAVE_LONG_LONG_INT
case 'q':
flags |= QUADINT;
goto rflag;
#endif
case 'c':
*(cp = buf) = va_arg(ap, int);
size = 1;
sign = '\0';
break;
case 'D':
flags |= LONGINT;
case 'd':
case 'i':
#ifdef HAVE_LONG_LONG_INT
if (flags & QUADINT) {
uqval = va_arg(ap, long long);
if ((long long)uqval < 0) {
uqval = -uqval;
sign = '-';
}
}
else
#endif
{
ulval = SARG();
if ((long)ulval < 0) {
ulval = -ulval;
sign = '-';
}
}
base = 10;
goto number;
case 'n':
#ifdef HAVE_LONG_LONG_INT
if (flags & QUADINT)
*va_arg(ap, long long *) = ret;
else
#endif
if (flags & LONGINT)
*va_arg(ap, long *) = ret;
else if (flags & SHORTINT)
*va_arg(ap, short *) = ret;
else
*va_arg(ap, int *) = ret;
continue;
case 'O':
flags |= LONGINT;
case 'o':
#ifdef HAVE_LONG_LONG_INT
if (flags & QUADINT)
uqval = va_arg(ap, unsigned long long);
else
#endif
ulval = UARG();
base = 8;
goto nosign;
case 'p':
ulval = (unsigned long)va_arg(ap, void *);
base = 16;
xdigs = "0123456789abcdef";
flags = (flags & ~QUADINT) | HEXPREFIX;
ch = 'x';
goto nosign;
case 's':
if ((cp = va_arg(ap, char *)) == NULL)
cp = "(null)";
if (prec >= 0) {
char *p = memchr(cp, 0, 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;
case 'u':
#ifdef HAVE_LONG_LONG_INT
if (flags & QUADINT)
uqval = va_arg(ap, unsigned long long);
else
#endif
ulval = UARG();
base = 10;
goto nosign;
case 'X':
xdigs = "0123456789ABCDEF";
goto hex;
case 'x':
xdigs = "0123456789abcdef";
hex:
#ifdef HAVE_LONG_LONG_INT
if (flags & QUADINT)
uqval = va_arg(ap, unsigned long long);
else
#endif
ulval = UARG();
base = 16;
if (flags & ALT &&
#ifdef HAVE_LONG_LONG_INT
(flags & QUADINT ? uqval != 0 : ulval != 0))
#else
ulval != 0)
#endif
flags |= HEXPREFIX;
nosign: sign = '\0';
number: if ((dprec = prec) >= 0)
flags &= ~ZEROPAD;
cp = buf + BUF;
#ifdef HAVE_LONG_LONG_INT
if (flags & QUADINT) {
if (uqval != 0 || prec != 0)
cp = __uqtoa(uqval, cp, base,
flags & ALT, xdigs);
}
else
#endif
{
if (ulval != 0 || prec != 0)
cp = __ultoa(ulval, cp, base,
flags & ALT, xdigs);
}
size = buf + BUF - cp;
break;
default:
if (ch == '\0')
goto done;
cp = buf;
*cp = ch;
size = 1;
sign = '\0';
break;
}
fieldsz = size;
if (sign)
fieldsz++;
else if (flags & HEXPREFIX)
fieldsz += 2;
realsz = dprec > fieldsz ? dprec : fieldsz;
if ((flags & (LADJUST|ZEROPAD)) == 0)
PAD(width - realsz, blanks);
if (sign) {
PRINT(&sign, 1);
} else if (flags & HEXPREFIX) {
ox[0] = '0';
ox[1] = ch;
PRINT(ox, 2);
}
if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD)
PAD(width - realsz, zeroes);
PAD(dprec - fieldsz, zeroes);
PRINT(cp, size);
if (flags & LADJUST)
PAD(width - realsz, blanks);
ret += width > realsz ? width : realsz;
}
done:
if (strsize)
*str = '\0';
return (ret);
}
#ifndef HAVE_VSNPRINTF
int
vsnprintf(str, n, fmt, ap)
char *str;
size_t n;
const char *fmt;
va_list ap;
{
return (xxxprintf(&str, n, 0, fmt, ap));
}
#endif
#ifndef HAVE_SNPRINTF
int
#ifdef __STDC__
snprintf(char *str, size_t n, char const *fmt, ...)
#else
snprintf(str, n, fmt, va_alist)
char *str;
size_t n;
char const *fmt;
va_dcl
#endif
{
int ret;
va_list ap;
#ifdef __STDC__
va_start(ap, fmt);
#else
va_start(ap);
#endif
ret = xxxprintf(&str, n, 0, fmt, ap);
va_end(ap);
return (ret);
}
#endif
#ifndef HAVE_VASPRINTF
int
vasprintf(str, fmt, ap)
char **str;
const char *fmt;
va_list ap;
{
return (xxxprintf(str, 0, 1, fmt, ap));
}
#endif
#ifndef HAVE_ASPRINTF
int
#ifdef __STDC__
asprintf(char **str, char const *fmt, ...)
#else
asprintf(str, fmt, va_alist)
char **str;
char const *fmt;
va_dcl
#endif
{
int ret;
va_list ap;
#ifdef __STDC__
va_start(ap, fmt);
#else
va_start(ap);
#endif
ret = xxxprintf(str, 0, 1, fmt, ap);
va_end(ap);
return (ret);
}
#endif