C02/vic20/fread.c02

/*************************************
 * fread.c02 - test file.h02 Library *
 *             function fread()      *
 *************************************
load "fread.prg",8
*/

#include <vic20.h02>
#include <stdlib.h02>
#include <stdio.h02>
#include <string.h02>
#include <file.h02>

char fp; //File Pointer
char filnam = "PETSCII.SEQ";
char buffer[128];
char i, n;

main:
    //Print Banner
    putchr(147); //Clear Screen
    putchr(18);  //Reverse On
    putstr("     FREAD TEST     ");

    //Initialize File System
    fsinit();

    //Open File
    newlin();
    fp = fopen(8, &filnam);
    if (fp) {
        outstr("CHANNEL ");
        ctoa(fp, &buffer);
        outstr(&buffer);
        putstr(" OPENED TO ");
        putstr(&filnam);
    } 
    else {
        prterr();
        putstr(" OPENING FILE");
        putstr(&filnam);
        goto exit;
    }

    //Print File Contents
    newlin();
    putstr("FILE CONTENTS:");
    fsdst(&buffer);
    while (!feof(fp)) {
        n = fread(fp, 6);
        if (!n) break;
        prbyte(n);
        putchr(':');
        for (i=0; i<n; i++) {
          prbyte(buffer[i]);
          putchr(' ');
        }
        newlin();
    }
    newlin();

    //Close File
    if (fclose(fp)) {
        prterr();
        putstr(" CLOSING FILE");
        putstr(&filnam);
    }
    else {
        outstr("FILE ");
        putstr(&filnam);
        putstr("CLOSED");
    }

goto exit;

void prterr() {
    outstr("ERROR ");
    ctoa(fstat(0), &buffer);
    outstr(&buffer);
}