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/*
* Mach Operating System
* Copyright (c) 1991,1990,1989 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
#include <stdarg.h>
#include "doprnt.h"
#define SPRINTF_UNLIMITED -1
struct sprintf_state {
char *buf;
unsigned int len;
unsigned int max;
};
static void
savechar(char *arg, int c)
{
struct sprintf_state *state = (struct sprintf_state *)arg;
if (state->max != (unsigned int)SPRINTF_UNLIMITED)
{
if (state->len >= state->max) {
state->len++;
return;
}
}
state->len++;
*state->buf = c;
state->buf++;
}
int vsprintf(char *s, const char *fmt, va_list args)
{
struct sprintf_state state;
state.max = SPRINTF_UNLIMITED;
state.len = 0;
state.buf = s;
_doprnt(fmt, args, 0, (void (*)()) savechar, (char *) &state);
*(state.buf) = '\0';
return state.len;
}
int vsnprintf(char *s, int size, const char *fmt, va_list args)
{
struct sprintf_state state;
state.max = size - 1;
state.len = 0;
state.buf = s;
_doprnt(fmt, args, 0, (void (*)()) savechar, (char *) &state);
*(state.buf) = '\0';
return state.len;
}
int sprintf(char *s, const char *fmt, ...)
{
va_list args;
int err;
va_start(args, fmt);
err = vsprintf(s, fmt, args);
va_end(args);
return err;
}
int snprintf(char *s, int size, const char *fmt, ...)
{
va_list args;
int err;
va_start(args, fmt);
err = vsnprintf(s, size, fmt, args);
va_end(args);
return err;
}
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