Subversion Repositories planix.SVN

/*
 * 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;
                }
        }
}