#include "sfhdr.h"
#if __STD_C
ssize_t sfnputc(reg Sfio_t* f, reg int c, reg size_t n)
#else
ssize_t sfnputc(f,c,n)
reg Sfio_t* f;
reg int c;
reg size_t n;
#endif
{
reg uchar* ps;
reg ssize_t p, w;
uchar buf[128];
reg int local;
SFMTXSTART(f,-1);
GETLOCAL(f,local);
if(SFMODE(f,local) != SF_WRITE && _sfmode(f,SF_WRITE,local) < 0)
SFMTXRETURN(f, -1);
SFLOCK(f,local);
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)
{
f->next += p;
if(c == '\n')
(void)SFFLSBUF(f,-1);
goto done;
}
for(;;)
{
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);
}