/* * pANS stdio -- setvbuf */#include "iolib.h"#include <stdlib.h>int setvbuf(FILE *f, char *buf, int mode, size_t size){ if(f->state!=OPEN){ f->state=ERR; return -1; } f->state=RDWR; switch(mode){ case _IOLBF: f->flags|=LINEBUF; case _IOFBF: if(buf==0){ buf=malloc(size); if(buf==0){ f->state=ERR; return -1; } f->flags|=BALLOC; } f->bufl=size; break; case _IONBF: buf=f->unbuf; f->bufl=0; break; } f->rp=f->wp=f->lp=f->buf=buf; f->state=RDWR; return 0;}int _IO_setvbuf(FILE *f){ if(f==stderr || (f==stdout && isatty(1))) return setvbuf(f, (char *)0, _IOLBF, BUFSIZ); return setvbuf(f, (char *)0, _IOFBF, BUFSIZ);}
/*
* pANS stdio -- setvbuf
*/
#include "iolib.h"
#include <stdlib.h>
int setvbuf(FILE *f, char *buf, int mode, size_t size){
if(f->state!=OPEN){
f->state=ERR;
return -1;
}
f->state=RDWR;
switch(mode){
case _IOLBF:
f->flags|=LINEBUF;
case _IOFBF:
if(buf==0){
buf=malloc(size);
if(buf==0){
f->state=ERR;
return -1;
}
f->flags|=BALLOC;
}
f->bufl=size;
break;
case _IONBF:
buf=f->unbuf;
f->bufl=0;
break;
}
f->rp=f->wp=f->lp=f->buf=buf;
f->state=RDWR;
return 0;
}
int _IO_setvbuf(FILE *f){
if(f==stderr || (f==stdout && isatty(1)))
return setvbuf(f, (char *)0, _IOLBF, BUFSIZ);
return setvbuf(f, (char *)0, _IOFBF, BUFSIZ);
}