472 lines
10 KiB
C
472 lines
10 KiB
C
/*
|
|
* Copyright (c) 1983, 1995, 1996 Eric P. Allman
|
|
* Copyright (c) 1988, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/ioctl.h>
|
|
#include <sys/param.h>
|
|
|
|
#include "postgres.h"
|
|
|
|
|
|
/*
|
|
* We do all internal arithmetic in the widest available integer type,
|
|
* here called long_long (or ulong_long for unsigned).
|
|
*/
|
|
#ifdef HAVE_LONG_LONG_INT_64
|
|
typedef long long long_long;
|
|
typedef unsigned long long ulong_long;
|
|
|
|
#else
|
|
typedef long long_long;
|
|
typedef unsigned long ulong_long;
|
|
|
|
#endif
|
|
|
|
/*
|
|
** SNPRINTF, VSNPRINT -- counted versions of printf
|
|
**
|
|
** These versions have been grabbed off the net. They have been
|
|
** cleaned up to compile properly and support for .precision and
|
|
** %lx has been added.
|
|
*/
|
|
|
|
/**************************************************************
|
|
* Original:
|
|
* Patrick Powell Tue Apr 11 09:48:21 PDT 1995
|
|
* A bombproof version of doprnt (dopr) included.
|
|
* Sigh. This sort of thing is always nasty do deal with. Note that
|
|
* the version here does not include floating point. (now it does ... tgl)
|
|
*
|
|
* snprintf() is used instead of sprintf() as it does limit checks
|
|
* for string length. This covers a nasty loophole.
|
|
*
|
|
* The other functions are there to prevent NULL pointers from
|
|
* causing nast effects.
|
|
**************************************************************/
|
|
|
|
/*static char _id[] = "$Id: snprintf.c,v 1.27 1999/09/09 03:13:22 tgl Exp $";*/
|
|
static char *end;
|
|
static int SnprfOverflow;
|
|
|
|
int snprintf(char *str, size_t count, const char *fmt,...);
|
|
int vsnprintf(char *str, size_t count, const char *fmt, va_list args);
|
|
static void dopr(char *buffer, const char *format, va_list args);
|
|
|
|
int
|
|
snprintf(char *str, size_t count, const char *fmt,...)
|
|
{
|
|
int len;
|
|
va_list args;
|
|
|
|
va_start(args, fmt);
|
|
len = vsnprintf(str, count, fmt, args);
|
|
va_end(args);
|
|
return len;
|
|
}
|
|
|
|
|
|
int
|
|
vsnprintf(char *str, size_t count, const char *fmt, va_list args)
|
|
{
|
|
str[0] = '\0';
|
|
end = str + count - 1;
|
|
SnprfOverflow = 0;
|
|
dopr(str, fmt, args);
|
|
if (count > 0)
|
|
end[0] = '\0';
|
|
return strlen(str);
|
|
}
|
|
|
|
/*
|
|
* dopr(): poor man's version of doprintf
|
|
*/
|
|
|
|
static void fmtstr(char *value, int ljust, int len, int zpad, int maxwidth);
|
|
static void fmtnum(long_long value, int base, int dosign, int ljust, int len, int zpad);
|
|
static void fmtfloat(double value, char type, int ljust, int len, int precision, int pointflag);
|
|
static void dostr(char *str, int cut);
|
|
static void dopr_outch(int c);
|
|
|
|
static char *output;
|
|
|
|
|
|
static void
|
|
dopr(char *buffer, const char *format, va_list args)
|
|
{
|
|
int ch;
|
|
long_long value;
|
|
double fvalue;
|
|
int longlongflag = 0;
|
|
int longflag = 0;
|
|
int pointflag = 0;
|
|
int maxwidth = 0;
|
|
char *strvalue;
|
|
int ljust;
|
|
int len;
|
|
int zpad;
|
|
|
|
output = buffer;
|
|
while ((ch = *format++))
|
|
{
|
|
switch (ch)
|
|
{
|
|
case '%':
|
|
ljust = len = zpad = maxwidth = 0;
|
|
longflag = longlongflag = pointflag = 0;
|
|
nextch:
|
|
ch = *format++;
|
|
switch (ch)
|
|
{
|
|
case 0:
|
|
dostr("**end of format**", 0);
|
|
*output = '\0';
|
|
return;
|
|
case '-':
|
|
ljust = 1;
|
|
goto nextch;
|
|
case '0': /* set zero padding if len not set */
|
|
if (len == 0 && !pointflag)
|
|
zpad = '0';
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
case '8':
|
|
case '9':
|
|
if (pointflag)
|
|
maxwidth = maxwidth * 10 + ch - '0';
|
|
else
|
|
len = len * 10 + ch - '0';
|
|
goto nextch;
|
|
case '*':
|
|
if (pointflag)
|
|
maxwidth = va_arg(args, int);
|
|
else
|
|
len = va_arg(args, int);
|
|
goto nextch;
|
|
case '.':
|
|
pointflag = 1;
|
|
goto nextch;
|
|
case 'l':
|
|
if (longflag)
|
|
longlongflag = 1;
|
|
else
|
|
longflag = 1;
|
|
goto nextch;
|
|
case 'u':
|
|
case 'U':
|
|
/* fmtnum(value,base,dosign,ljust,len,zpad) */
|
|
if (longflag)
|
|
{
|
|
if (longlongflag)
|
|
value = va_arg(args, long_long);
|
|
else
|
|
value = va_arg(args, long);
|
|
}
|
|
else
|
|
value = va_arg(args, int);
|
|
fmtnum(value, 10, 0, ljust, len, zpad);
|
|
break;
|
|
case 'o':
|
|
case 'O':
|
|
/* fmtnum(value,base,dosign,ljust,len,zpad) */
|
|
if (longflag)
|
|
{
|
|
if (longlongflag)
|
|
value = va_arg(args, long_long);
|
|
else
|
|
value = va_arg(args, long);
|
|
}
|
|
else
|
|
value = va_arg(args, int);
|
|
fmtnum(value, 8, 0, ljust, len, zpad);
|
|
break;
|
|
case 'd':
|
|
case 'D':
|
|
if (longflag)
|
|
{
|
|
if (longlongflag)
|
|
value = va_arg(args, long_long);
|
|
else
|
|
value = va_arg(args, long);
|
|
}
|
|
else
|
|
value = va_arg(args, int);
|
|
|
|
fmtnum(value, 10, 1, ljust, len, zpad);
|
|
break;
|
|
case 'x':
|
|
if (longflag)
|
|
{
|
|
if (longlongflag)
|
|
value = va_arg(args, long_long);
|
|
else
|
|
value = va_arg(args, long);
|
|
}
|
|
else
|
|
value = va_arg(args, int);
|
|
fmtnum(value, 16, 0, ljust, len, zpad);
|
|
break;
|
|
case 'X':
|
|
if (longflag)
|
|
{
|
|
if (longlongflag)
|
|
value = va_arg(args, long_long);
|
|
else
|
|
value = va_arg(args, long);
|
|
}
|
|
else
|
|
value = va_arg(args, int);
|
|
fmtnum(value, -16, 0, ljust, len, zpad);
|
|
break;
|
|
case 's':
|
|
strvalue = va_arg(args, char *);
|
|
if (maxwidth > 0 || !pointflag)
|
|
{
|
|
if (pointflag && len > maxwidth)
|
|
len = maxwidth; /* Adjust padding */
|
|
fmtstr(strvalue, ljust, len, zpad, maxwidth);
|
|
}
|
|
break;
|
|
case 'c':
|
|
ch = va_arg(args, int);
|
|
dopr_outch(ch);
|
|
break;
|
|
case 'e':
|
|
case 'E':
|
|
case 'f':
|
|
case 'g':
|
|
case 'G':
|
|
fvalue = va_arg(args, double);
|
|
fmtfloat(fvalue, ch, ljust, len, maxwidth, pointflag);
|
|
break;
|
|
case '%':
|
|
dopr_outch(ch);
|
|
continue;
|
|
default:
|
|
dostr("???????", 0);
|
|
}
|
|
break;
|
|
default:
|
|
dopr_outch(ch);
|
|
break;
|
|
}
|
|
}
|
|
*output = '\0';
|
|
}
|
|
|
|
static void
|
|
fmtstr(char *value, int ljust, int len, int zpad, int maxwidth)
|
|
{
|
|
int padlen,
|
|
strlen; /* amount to pad */
|
|
|
|
if (value == 0)
|
|
value = "<NULL>";
|
|
for (strlen = 0; value[strlen]; ++strlen); /* strlen */
|
|
if (strlen > maxwidth && maxwidth)
|
|
strlen = maxwidth;
|
|
padlen = len - strlen;
|
|
if (padlen < 0)
|
|
padlen = 0;
|
|
if (ljust)
|
|
padlen = -padlen;
|
|
while (padlen > 0)
|
|
{
|
|
dopr_outch(' ');
|
|
--padlen;
|
|
}
|
|
dostr(value, maxwidth);
|
|
while (padlen < 0)
|
|
{
|
|
dopr_outch(' ');
|
|
++padlen;
|
|
}
|
|
}
|
|
|
|
static void
|
|
fmtnum(long_long value, int base, int dosign, int ljust, int len, int zpad)
|
|
{
|
|
int signvalue = 0;
|
|
ulong_long uvalue;
|
|
char convert[64];
|
|
int place = 0;
|
|
int padlen = 0; /* amount to pad */
|
|
int caps = 0;
|
|
|
|
/*
|
|
* DEBUGP(("value 0x%x, base %d, dosign %d, ljust %d, len %d, zpad
|
|
* %d\n", value, base, dosign, ljust, len, zpad ));
|
|
*/
|
|
uvalue = value;
|
|
if (dosign)
|
|
{
|
|
if (value < 0)
|
|
{
|
|
signvalue = '-';
|
|
uvalue = -value;
|
|
}
|
|
}
|
|
if (base < 0)
|
|
{
|
|
caps = 1;
|
|
base = -base;
|
|
}
|
|
do
|
|
{
|
|
convert[place++] = (caps ? "0123456789ABCDEF" : "0123456789abcdef")
|
|
[uvalue % (unsigned) base];
|
|
uvalue = (uvalue / (unsigned) base);
|
|
} while (uvalue);
|
|
convert[place] = 0;
|
|
|
|
if (len < 0)
|
|
{
|
|
/* this could happen with a "*" width spec */
|
|
ljust = 1;
|
|
len = -len;
|
|
}
|
|
padlen = len - place;
|
|
if (padlen < 0)
|
|
padlen = 0;
|
|
if (ljust)
|
|
padlen = -padlen;
|
|
|
|
/*
|
|
* DEBUGP(( "str '%s', place %d, sign %c, padlen %d\n",
|
|
* convert,place,signvalue,padlen));
|
|
*/
|
|
if (zpad && padlen > 0)
|
|
{
|
|
if (signvalue)
|
|
{
|
|
dopr_outch(signvalue);
|
|
--padlen;
|
|
signvalue = 0;
|
|
}
|
|
while (padlen > 0)
|
|
{
|
|
dopr_outch(zpad);
|
|
--padlen;
|
|
}
|
|
}
|
|
while (padlen > 0)
|
|
{
|
|
dopr_outch(' ');
|
|
--padlen;
|
|
}
|
|
if (signvalue)
|
|
dopr_outch(signvalue);
|
|
while (place > 0)
|
|
dopr_outch(convert[--place]);
|
|
while (padlen < 0)
|
|
{
|
|
dopr_outch(' ');
|
|
++padlen;
|
|
}
|
|
}
|
|
|
|
static void
|
|
fmtfloat(double value, char type, int ljust, int len, int precision, int pointflag)
|
|
{
|
|
char fmt[32];
|
|
char convert[512];
|
|
int padlen = 0; /* amount to pad */
|
|
|
|
/* we rely on regular C library's sprintf to do the basic conversion */
|
|
if (pointflag)
|
|
sprintf(fmt, "%%.%d%c", precision, type);
|
|
else
|
|
sprintf(fmt, "%%%c", type);
|
|
sprintf(convert, fmt, value);
|
|
|
|
if (len < 0)
|
|
{
|
|
/* this could happen with a "*" width spec */
|
|
ljust = 1;
|
|
len = -len;
|
|
}
|
|
padlen = len - strlen(convert);
|
|
if (padlen < 0)
|
|
padlen = 0;
|
|
if (ljust)
|
|
padlen = -padlen;
|
|
|
|
while (padlen > 0)
|
|
{
|
|
dopr_outch(' ');
|
|
--padlen;
|
|
}
|
|
dostr(convert, 0);
|
|
while (padlen < 0)
|
|
{
|
|
dopr_outch(' ');
|
|
++padlen;
|
|
}
|
|
}
|
|
|
|
static void
|
|
dostr(char *str, int cut)
|
|
{
|
|
if (cut)
|
|
{
|
|
while (*str && cut-- > 0)
|
|
dopr_outch(*str++);
|
|
}
|
|
else
|
|
{
|
|
while (*str)
|
|
dopr_outch(*str++);
|
|
}
|
|
}
|
|
|
|
static void
|
|
dopr_outch(int c)
|
|
{
|
|
#ifdef NOT_USED
|
|
if (iscntrl(c) && c != '\n' && c != '\t')
|
|
{
|
|
c = '@' + (c & 0x1F);
|
|
if (end == 0 || output < end)
|
|
*output++ = '^';
|
|
}
|
|
#endif
|
|
if (end == 0 || output < end)
|
|
*output++ = c;
|
|
else
|
|
SnprfOverflow++;
|
|
}
|