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Sprite 1984 - 1993
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Sprite 1984 - 1993.iso
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sprintf.c
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1990-10-19
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/*
* sprintf.c --
*
* Source code for the "sprintf" library procedure.
*
* Copyright 1988 Regents of the University of California
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies. The University of California
* makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without
* express or implied warranty.
*/
#ifndef lint
static char rcsid[] = "$Header: /sprite/src/lib/c/stdio/RCS/sprintf.c,v 1.10 90/10/19 15:23:05 kupfer Exp $ SPRITE (Berkeley)";
#endif not lint
#include <stdio.h>
#include <varargs.h>
#include <cfuncproto.h>
#include <sprite.h> /* for Boolean typedef */
#ifndef lint
/*
* Forward declarations:
*/
static void StringWriteProc _ARGS_((FILE *stream, Boolean flush));
/*
*----------------------------------------------------------------------
*
* StringWriteProc --
*
* This procedure is invoked when the "buffer" for the string
* fills up. Just give the string more space.
*
* Results:
* None.
*
* Side effects:
* The stream's "buffer" gets enlarged.
*
*----------------------------------------------------------------------
*/
static void
StringWriteProc(stream, flush)
register FILE *stream;
Boolean flush; /* ignored */
{
stream->writeCount = 5000;
}
/*
*----------------------------------------------------------------------
*
* sprintf --
*
* Format and print one or more values, placing the output into
* a string. See the manual page for details of how the format
* string is interpreted.
*
* Results:
* The return value is a pointer to string, which has been
* overwritten with formatted information.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
char *
sprintf(va_alist)
va_dcl /* char *string, then char *format, then any
* number of additional values to be printed
* in string under control of format. */
{
char *string;
char *format;
FILE stream;
va_list args;
va_start(args);
string = va_arg(args, char *);
format = va_arg(args, char *);
Stdio_Setup(&stream, 0, 1, (unsigned char *)string, 5000, (void (*)()) 0,
StringWriteProc, (int (*)()) 0, (ClientData) 0);
(void) vfprintf(&stream, format, args);
putc(0, &stream);
return string;
}
#else
/* VARARGS2 */
/* ARGSUSED */
char *
sprintf(string, format)
char *string;
char *format;
{
return string;
}
#endif lint