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/*
** fgetc.c
**
** (C) Copyright 1998, 2002 Ullrich von Bassewitz (uz@cc65.org)
**
*/
#include <stdio.h>
#include <unistd.h>
#include "_file.h"
/*****************************************************************************/
/* Code */
/*****************************************************************************/
int __fastcall__ fgetc (register FILE* f)
{
unsigned char c;
/* Check if the file is open or if there is an error condition */
if ((f->f_flags & _FOPEN) == 0 || (f->f_flags & (_FERROR | _FEOF)) != 0) {
return EOF;
}
/* If we have a pushed back character, return it */
if (f->f_flags & _FPUSHBACK) {
f->f_flags &= ~_FPUSHBACK;
return f->f_pushback;
}
/* Read one byte */
switch (read (f->f_fd, &c, 1)) {
case -1:
/* Error */
f->f_flags |= _FERROR;
return EOF;
case 0:
/* EOF */
f->f_flags |= _FEOF;
return EOF;
default:
/* Char read */
return c;
}
}
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