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/*
* pANS stdio -- fwrite
*/
#include "iolib.h"
#include <string.h>
#define BIGN (BUFSIZ/2)
size_t fwrite(const void *p, size_t recl, size_t nrec, FILE *f){
char *s;
int n, d;
s=(char *)p;
n=recl*nrec;
while(n>0){
d=f->rp-f->wp;
if(d>0){
if(d>n)
d=n;
memcpy(f->wp, s, d);
f->wp+=d;
}else{
if(n>=BIGN && f->state==WR && !(f->flags&(STRING|LINEBUF)) && f->buf!=f->unbuf){
d=f->wp-f->buf;
if(d>0){
if(f->flags&APPEND)
lseek(f->fd, 0L, SEEK_END);
if(write(f->fd, f->buf, d)!=d){
f->state=ERR;
goto ret;
}
f->wp=f->rp=f->buf;
}
if(f->flags&APPEND)
lseek(f->fd, 0L, SEEK_END);
d=write(f->fd, s, n);
if(d<=0){
f->state=ERR;
goto ret;
}
}else{
if(_IO_putc(*s, f)==EOF)
goto ret;
d=1;
}
}
s+=d;
n-=d;
}
ret:
if(recl)
return (s-(char*)p)/recl;
else
return s-(char*)p;
}
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