/* * 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 -- _IO_getc */#include "iolib.h"int _IO_getc(FILE *f){ int cnt; switch(f->state){ default: /* CLOSED, WR, ERR, EOF */ return EOF; case OPEN: _IO_setvbuf(f); case RDWR: case RD: if(f->flags&STRING) return EOF; cnt=read(f->fd, f->buf, f->buf==f->unbuf?1:f->bufl); switch(cnt){ case -1: f->state=ERR; return EOF; case 0: f->state=END; return EOF; default: f->state=RD; f->rp=f->buf; f->wp=f->buf+cnt; return (*f->rp++)&_IO_CHMASK; } }}
/*
* 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 -- _IO_getc
*/
#include "iolib.h"
int _IO_getc(FILE *f){
int cnt;
switch(f->state){
default: /* CLOSED, WR, ERR, EOF */
return EOF;
case OPEN:
_IO_setvbuf(f);
case RDWR:
case RD:
if(f->flags&STRING) return EOF;
cnt=read(f->fd, f->buf, f->buf==f->unbuf?1:f->bufl);
switch(cnt){
case -1: f->state=ERR; return EOF;
case 0: f->state=END; return EOF;
default:
f->state=RD;
f->rp=f->buf;
f->wp=f->buf+cnt;
return (*f->rp++)&_IO_CHMASK;
}
}
}