libukcprog/src/strnf.c

/* strnf.c -- like sprintf, but with a buffer size argument */

/*  Copyright 1992  Mark Russell, University of Kent at Canterbury.
 *
 *  You can do what you like with this source code as long as
 *  you don't try to make money out of it and you include an
 *  unaltered copy of this message (including the copyright).
 */

char ukcprog_strnf_sccsid[] = "$Id: strnf.c,v 1.7 1993/10/25 11:40:55 mtr Exp $ UKC";

#ifdef __STDC__
#include <stdarg.h>
#else
#include <varargs.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifndef __STDC__
#include <memory.h>
#endif

#include "ukcprog.h"


#ifdef __STDC__
void
strnf(char *buf, size_t bufsize, const char *fmt, ...)
{

#else /* !__STDC__ */
void
strnf(va_alist)
va_dcl
{
        char *buf;
        int bufsize;
        char *fmt;
#endif /* !__STDC__ */
        va_list args;
        char *s;

#ifdef __STDC__
        va_start(args, fmt);
#else
        va_start(args);
        buf = va_arg(args, char *);
        bufsize = va_arg(args, size_t);
        fmt = va_arg(args, char *);
#endif

        s = formf(buf, (int)bufsize, fmt, args);

        va_end(args);

        /*  If formf had to allocate a buffer then the supplied buf
         *  was too small.  Copy what will fit and free the formf buffer.
         */
        if (s != buf) {
                memcpy(buf, s, (size_t)(bufsize - 1));
                buf[bufsize - 1] = '\0';
                free(s);
        }
}
Revision:	1.1
Committed:	Sat Mar 29 16:30:33 2003 UTC (21 years, 9 months ago) by tdb
Content type:	text/plain
Branch:	MAIN
CVS Tags:	LIBUKCPROG_1_0_2, LIBUKCPROG_1_0_1, LIBUKCPROG_1_0, HEAD
Log Message:	libukcprog is now a seperate package. I doubt this will be much use to anyone other than us, but I see no reason why we can't package it up and distribute it. Obviously we can't attach the GPL to this, as we don't own it.
#	User	Rev	Content
1	tdb	1.1	/* strnf.c -- like sprintf, but with a buffer size argument */
2
3			/* Copyright 1992 Mark Russell, University of Kent at Canterbury.
4			*
5			* You can do what you like with this source code as long as
6			* you don't try to make money out of it and you include an
7			* unaltered copy of this message (including the copyright).
8			*/
9
10			char ukcprog_strnf_sccsid[] = "$Id: strnf.c,v 1.7 1993/10/25 11:40:55 mtr Exp $ UKC";
11
12			#ifdef __STDC__
13			#include <stdarg.h>
14			#else
15			#include <varargs.h>
16			#endif
17
18			#include <stdio.h>
19			#include <stdlib.h>
20			#include <string.h>
21			#ifndef __STDC__
22			#include <memory.h>
23			#endif
24
25			#include "ukcprog.h"
26
27
28			#ifdef __STDC__
29			void
30			strnf(char buf, size_t bufsize, const char fmt, ...)
31			{
32
33			#else /* !__STDC__ */
34			void
35			strnf(va_alist)
36			va_dcl
37			{
38			char *buf;
39			int bufsize;
40			char *fmt;
41			#endif /* !__STDC__ */
42			va_list args;
43			char *s;
44
45			#ifdef __STDC__
46			va_start(args, fmt);
47			#else
48			va_start(args);
49			buf = va_arg(args, char *);
50			bufsize = va_arg(args, size_t);
51			fmt = va_arg(args, char *);
52			#endif
53
54			s = formf(buf, (int)bufsize, fmt, args);
55
56			va_end(args);
57
58			/* If formf had to allocate a buffer then the supplied buf
59			* was too small. Copy what will fit and free the formf buffer.
60			*/
61			if (s != buf) {
62			memcpy(buf, s, (size_t)(bufsize - 1));
63			buf[bufsize - 1] = '\0';
64			free(s);
65			}
66			}