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- /*
- * This file is part of the UCB release of Plan 9. It is subject to the license
- * terms in the LICENSE file found in the top-level directory of this
- * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
- * part of the UCB release of Plan 9, including this file, may be copied,
- * modified, propagated, or distributed except according to the terms contained
- * in the LICENSE file.
- */
- /*
- * pANS stdio -- fwrite
- */
- #include "iolib.h"
- #define BIGN (BUFSIZ/2)
- int32_t fwrite(const void *p, int32_t recl, int32_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;
- memmove(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)
- seek(f->fd, 0L, 2);
- if(write(f->fd, f->buf, d)!=d){
- f->state=ERR;
- goto ret;
- }
- f->wp=f->rp=f->buf;
- }
- if(f->flags&APPEND)
- seek(f->fd, 0L, 2);
- 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:
- return (s-(char *)p)/(recl?recl:1);
- }
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