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/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2010 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#include "sfhdr.h"
/* Write out a character n times
**
** Written by Kiem-Phong Vo.
*/
#if __STD_C
ssize_t sfnputc(Sfio_t* f, int c, size_t n)
#else
ssize_t sfnputc(f,c,n)
Sfio_t* f; /* file to write */
int c; /* char to be written */
size_t n; /* number of time to repeat */
#endif
{
reg uchar* ps;
reg ssize_t p, w;
uchar buf[128];
reg int local;
SFMTXDECL(f);
SFMTXENTER(f,-1);
GETLOCAL(f,local);
if(SFMODE(f,local) != SF_WRITE && _sfmode(f,SF_WRITE,local) < 0)
SFMTXRETURN(f, -1);
SFLOCK(f,local);
/* write into a suitable buffer */
if((size_t)(p = (f->endb-(ps = f->next))) < n)
{ ps = buf; p = sizeof(buf); }
if((size_t)p > n)
p = n;
MEMSET(ps,c,p);
ps -= p;
w = n;
if(ps == f->next)
{ /* simple sfwrite */
f->next += p;
if(c == '\n')
(void)SFFLSBUF(f,-1);
goto done;
}
for(;;)
{ /* hard write of data */
if((p = SFWRITE(f,(Void_t*)ps,p)) <= 0 || (n -= p) <= 0)
{ w -= n;
goto done;
}
if((size_t)p > n)
p = n;
}
done :
SFOPEN(f,local);
SFMTXRETURN(f, w);
}
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