You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
562 lines
14 KiB
562 lines
14 KiB
#include "config.h"
|
|
|
|
#ifndef HAVE_SNPRINTF
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <stdarg.h>
|
|
#include <errno.h>
|
|
|
|
/*
|
|
* Shamelessly snarfed from sane...
|
|
* which shamelessly snarfed from LPR
|
|
* which probably shamelessly snarfed from....
|
|
*
|
|
* Moved comments to end so I can actually read the code.. cleaned out useless
|
|
* junk....
|
|
*/
|
|
|
|
#define VA_LOCAL_DECL va_list ap
|
|
#define VA_START(f) va_start(ap, f)
|
|
#define VA_SHIFT(v,t) ; /* no-op for ANSI */
|
|
#define VA_END va_end(ap)
|
|
|
|
/*
|
|
* dopr(): poor man's version of doprintf
|
|
*/
|
|
|
|
static void dopr(char *buffer, const char *format, va_list args);
|
|
static void fmtstr(char *value, int ljust, int len, int zpad, int precision);
|
|
static void fmtnum(long value, int base, int dosign,
|
|
int ljust, int len, int zpad, int precision);
|
|
static void fmtdouble(int fmt, double value,
|
|
int ljust, int len, int zpad, int precision);
|
|
static void dostr(char *);
|
|
static char *output;
|
|
static void dopr_outch(int c);
|
|
static char *end;
|
|
int visible_control = 1;
|
|
|
|
static int
|
|
my_vsnprintf(char *str, size_t count, const char *fmt, va_list args)
|
|
{
|
|
str[0] = 0;
|
|
end = str + count - 1;
|
|
dopr(str, fmt, args);
|
|
if (count > 0)
|
|
{
|
|
end[0] = 0;
|
|
}
|
|
return (strlen(str));
|
|
}
|
|
|
|
#ifdef HAVE_STDARGS
|
|
int
|
|
my_snprintf(char *str, size_t count, const char *fmt,...)
|
|
#else
|
|
int
|
|
my_snprintf(va_alist)
|
|
va_dcl
|
|
|
|
#endif
|
|
{
|
|
#ifndef HAVE_STDARGS
|
|
char *str;
|
|
size_t count;
|
|
char *fmt;
|
|
|
|
#endif
|
|
VA_LOCAL_DECL;
|
|
|
|
VA_START(fmt);
|
|
VA_SHIFT(str, char *);
|
|
|
|
VA_SHIFT(count, size_t);
|
|
VA_SHIFT(fmt, char *);
|
|
|
|
(void)my_vsnprintf(str, count, fmt, ap);
|
|
VA_END;
|
|
return (strlen(str));
|
|
}
|
|
|
|
static void
|
|
dopr(char *buffer, const char *format, va_list args)
|
|
{
|
|
int ch;
|
|
long value;
|
|
int longflag = 0;
|
|
char *strvalue;
|
|
int ljust;
|
|
int len;
|
|
int zpad;
|
|
int precision;
|
|
int set_precision;
|
|
double dval;
|
|
|
|
output = buffer;
|
|
while ((ch = *format++))
|
|
{
|
|
switch (ch)
|
|
{
|
|
case '%':
|
|
ljust = len = zpad = 0;
|
|
precision = -1;
|
|
set_precision = 0;
|
|
nextch:
|
|
ch = *format++;
|
|
switch (ch)
|
|
{
|
|
case 0:
|
|
dostr("**end of format**");
|
|
return;
|
|
case '-':
|
|
ljust = 1;
|
|
goto nextch;
|
|
case '.':
|
|
set_precision = 1;
|
|
precision = 0;
|
|
goto nextch;
|
|
case '*':
|
|
len = va_arg(args, int);
|
|
|
|
goto nextch;
|
|
case '0': /* set zero padding if len not set */
|
|
if (len == 0 && set_precision == 0)
|
|
zpad = '0';
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
case '8':
|
|
case '9':
|
|
if (set_precision)
|
|
{
|
|
precision = precision * 10 + ch - '0';
|
|
}
|
|
else
|
|
{
|
|
len = len * 10 + ch - '0';
|
|
}
|
|
goto nextch;
|
|
case 'l':
|
|
longflag = 1;
|
|
goto nextch;
|
|
case 'u':
|
|
case 'U':
|
|
/*fmtnum(value,base,dosign,ljust,len, zpad, precision) */
|
|
if (longflag)
|
|
{
|
|
value = va_arg(args, long);
|
|
}
|
|
else
|
|
{
|
|
value = va_arg(args, int);
|
|
}
|
|
fmtnum(value, 10, 0, ljust, len, zpad, precision);
|
|
break;
|
|
case 'o':
|
|
case 'O':
|
|
/*fmtnum(value,base,dosign,ljust,len, zpad, precision) */
|
|
if (longflag)
|
|
{
|
|
value = va_arg(args, long);
|
|
}
|
|
else
|
|
{
|
|
value = va_arg(args, int);
|
|
}
|
|
fmtnum(value, 8, 0, ljust, len, zpad, precision);
|
|
break;
|
|
case 'd':
|
|
case 'i':
|
|
case 'D':
|
|
if (longflag)
|
|
{
|
|
value = va_arg(args, long);
|
|
}
|
|
else
|
|
{
|
|
value = va_arg(args, int);
|
|
}
|
|
fmtnum(value, 10, 1, ljust, len, zpad, precision);
|
|
break;
|
|
case 'x':
|
|
if (longflag)
|
|
{
|
|
value = va_arg(args, long);
|
|
}
|
|
else
|
|
{
|
|
value = va_arg(args, int);
|
|
}
|
|
fmtnum(value, 16, 0, ljust, len, zpad, precision);
|
|
break;
|
|
case 'X':
|
|
if (longflag)
|
|
{
|
|
value = va_arg(args, long);
|
|
}
|
|
else
|
|
{
|
|
value = va_arg(args, int);
|
|
}
|
|
fmtnum(value, -16, 0, ljust, len, zpad, precision);
|
|
break;
|
|
case 's':
|
|
strvalue = va_arg(args, char *);
|
|
|
|
fmtstr(strvalue, ljust, len, zpad, precision);
|
|
break;
|
|
case 'c':
|
|
ch = va_arg(args, int);
|
|
|
|
{
|
|
char b[2];
|
|
int vsb = visible_control;
|
|
|
|
b[0] = ch;
|
|
b[1] = 0;
|
|
visible_control = 0;
|
|
fmtstr(b, ljust, len, zpad, precision);
|
|
visible_control = vsb;
|
|
}
|
|
break;
|
|
case 'f':
|
|
case 'g':
|
|
dval = va_arg(args, double);
|
|
|
|
fmtdouble(ch, dval, ljust, len, zpad, precision);
|
|
break;
|
|
case '%':
|
|
dopr_outch(ch);
|
|
continue;
|
|
default:
|
|
dostr("???????");
|
|
}
|
|
longflag = 0;
|
|
break;
|
|
default:
|
|
dopr_outch(ch);
|
|
break;
|
|
}
|
|
}
|
|
*output = 0;
|
|
}
|
|
|
|
/*
|
|
* Format '%[-]len[.precision]s'
|
|
* - = left justify (ljust)
|
|
* len = minimum length
|
|
* precision = numbers of chars in string to use
|
|
*/
|
|
static void
|
|
fmtstr(char *value, int ljust, int len, int zpad, int precision)
|
|
{
|
|
int padlen, strlen, i, c; /* amount to pad */
|
|
|
|
zpad = 0;
|
|
if (value == 0)
|
|
{
|
|
value = "<NULL>";
|
|
}
|
|
if (precision > 0)
|
|
{
|
|
strlen = precision;
|
|
}
|
|
else
|
|
{
|
|
/* cheap strlen so you do not have library call */
|
|
for (strlen = 0; (c = value[strlen]); ++strlen)
|
|
{
|
|
if (visible_control && iscntrl(c) && !isspace(c))
|
|
{
|
|
++strlen;
|
|
}
|
|
}
|
|
}
|
|
padlen = len - strlen;
|
|
if (padlen < 0)
|
|
padlen = 0;
|
|
if (ljust)
|
|
padlen = -padlen;
|
|
while (padlen > 0)
|
|
{
|
|
dopr_outch(' ');
|
|
--padlen;
|
|
}
|
|
/* output characters */
|
|
for (i = 0; (c = value[i]); ++i)
|
|
{
|
|
if (visible_control && iscntrl(c) && !isspace(c))
|
|
{
|
|
dopr_outch('^');
|
|
c = ('@' | (c & 0x1F));
|
|
}
|
|
dopr_outch(c);
|
|
}
|
|
while (padlen < 0)
|
|
{
|
|
dopr_outch(' ');
|
|
++padlen;
|
|
}
|
|
}
|
|
|
|
static void
|
|
fmtnum(long value, int base, int dosign, int ljust,
|
|
int len, int zpad, int precision)
|
|
{
|
|
int signvalue = 0;
|
|
unsigned long uvalue;
|
|
char convert[20];
|
|
int place = 0;
|
|
int padlen = 0; /* amount to pad */
|
|
int caps = 0;
|
|
|
|
precision = 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;
|
|
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
|
|
fmtdouble(int fmt, double value, int ljust, int len, int zpad, int precision)
|
|
{
|
|
char convert[128];
|
|
char fmtstr[128];
|
|
int l;
|
|
|
|
zpad = 0;
|
|
if (len == 0)
|
|
len = 10;
|
|
if (len > (int)sizeof(convert) - 10)
|
|
{
|
|
len = (int)sizeof(convert) - 10;
|
|
}
|
|
if (precision > (int)sizeof(convert) - 10)
|
|
{
|
|
precision = (int)sizeof(convert) - 10;
|
|
}
|
|
if (precision > len)
|
|
precision = len;
|
|
strcpy(fmtstr, "%");
|
|
if (ljust)
|
|
strcat(fmtstr, "-");
|
|
if (len)
|
|
{
|
|
sprintf(fmtstr + strlen(fmtstr), "%d", len);
|
|
}
|
|
if (precision > 0)
|
|
{
|
|
sprintf(fmtstr + strlen(fmtstr), ".%d", precision);
|
|
}
|
|
l = strlen(fmtstr);
|
|
fmtstr[l] = fmt;
|
|
fmtstr[l + 1] = 0;
|
|
sprintf(convert, fmtstr, value);
|
|
dostr(convert);
|
|
}
|
|
|
|
static void
|
|
dostr(char *str)
|
|
{
|
|
while (*str)
|
|
dopr_outch(*str++);
|
|
}
|
|
|
|
static void
|
|
dopr_outch(int c)
|
|
{
|
|
if (end == 0 || output < end)
|
|
{
|
|
*output++ = c;
|
|
}
|
|
}
|
|
|
|
/**************************************************************
|
|
* 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...
|
|
*
|
|
* plp_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.
|
|
**************************************************************/
|
|
|
|
/***************************************************************************
|
|
* LPRng - An Extended Print Spooler System
|
|
*
|
|
* Copyright 1988-1997, Patrick Powell, San Diego, CA
|
|
* papowell@sdsu.edu
|
|
* See below for conditions of use.
|
|
*
|
|
***************************************************************************
|
|
* MODULE: snprintf.c
|
|
* PURPOSE: LPRng version of printf - absolutely bombproof (hopefully!)
|
|
**************************************************************************/
|
|
|
|
/*
|
|
* The "Artistic License"
|
|
*
|
|
* Preamble
|
|
*
|
|
* The intent of this document is to state the conditions under which a
|
|
* Package may be copied, such that the Copyright Holder maintains some
|
|
* semblance of artistic control over the development of the package,
|
|
* while giving the users of the package the right to use and distribute
|
|
* the Package in a more-or-less customary fashion, plus the right to make
|
|
* reasonable modifications.
|
|
*
|
|
* Definitions:
|
|
*
|
|
* "Package" refers to the collection of files distributed by the
|
|
* Copyright Holder, and derivatives of that collection of files
|
|
* created through textual modification.
|
|
*
|
|
* "Standard Version" refers to such a Package if it has not been
|
|
* modified, or has been modified in accordance with the wishes
|
|
* of the Copyright Holder as specified below.
|
|
*
|
|
* "Copyright Holder" is whoever is named in the copyright or
|
|
* copyrights for the package.
|
|
*
|
|
* "You" is you, if you are thinking about copying or distributing
|
|
* this Package.
|
|
*
|
|
* "Reasonable copying fee" is whatever you can justify on the
|
|
* basis of media cost, duplication charges, time of people involved,
|
|
* and so on. (You will not be required to justify it to the
|
|
* Copyright Holder, but only to the computing community at large
|
|
* as a market that must bear the fee.)
|
|
*
|
|
* "Freely Available" means that no fee is charged for the item
|
|
* itself, though there may be fees involved in handling the item.
|
|
* It also means that recipients of the item may redistribute it
|
|
* under the same conditions they received it.
|
|
*
|
|
* 1. You may make and give away verbatim copies of the source form of the
|
|
* Standard Version of this Package without restriction, provided that you
|
|
* duplicate all of the original copyright notices and associated disclaimers.
|
|
*
|
|
* 2. You may apply bug fixes, portability fixes and other modifications
|
|
* derived from the Public Domain or from the Copyright Holder. A Package
|
|
* modified in such a way shall still be considered the Standard Version.
|
|
*
|
|
* 3. You may otherwise modify your copy of this Package in any way, provided
|
|
* that you insert a prominent notice in each changed file stating how and
|
|
* when you changed that file, and provided that you do at least ONE of the
|
|
* following:
|
|
*
|
|
* a) place your modifications in the Public Domain or otherwise make them
|
|
* Freely Available, such as by posting said modifications to Usenet or
|
|
* an equivalent medium, or placing the modifications on a major archive
|
|
* site such as uunet.uu.net, or by allowing the Copyright Holder to include
|
|
* your modifications in the Standard Version of the Package.
|
|
*
|
|
* b) use the modified Package only within your corporation or organization.
|
|
*
|
|
* c) rename any non-standard executables so the names do not conflict
|
|
* with standard executables, which must also be provided, and provide
|
|
* a separate manual page for each non-standard executable that clearly
|
|
* documents how it differs from the Standard Version.
|
|
*
|
|
* d) make other distribution arrangements with the Copyright Holder.
|
|
*
|
|
* 4. You may distribute the programs of this Package in object code or
|
|
* executable form, provided that you do at least ONE of the following:
|
|
*
|
|
* a) distribute a Standard Version of the executables and library files,
|
|
* together with instructions (in the manual page or equivalent) on where
|
|
* to get the Standard Version.
|
|
*
|
|
* b) accompany the distribution with the machine-readable source of
|
|
* the Package with your modifications.
|
|
*
|
|
* c) give non-standard executables non-standard names, and clearly
|
|
* document the differences in manual pages (or equivalent), together
|
|
* with instructions on where to get the Standard Version.
|
|
*
|
|
* d) make other distribution arrangements with the Copyright Holder.
|
|
*
|
|
* 5. You may charge a reasonable copying fee for any distribution of this
|
|
* Package. You may charge any fee you choose for support of this
|
|
* Package. You may not charge a fee for this Package itself. However,
|
|
* you may distribute this Package in aggregate with other (possibly
|
|
* commercial) programs as part of a larger (possibly commercial) software
|
|
* distribution provided that you do not advertise this Package as a
|
|
* product of your own.
|
|
*
|
|
* 6. The name of the Copyright Holder may not be used to endorse or promote
|
|
* products derived from this software without specific prior written permission.
|
|
*
|
|
* 7. THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
*
|
|
* The End
|
|
*/
|
|
|
|
#endif
|