/**************************************************************************************
 Copyright (c) 2002 The UbixOS Project
 All rights reserved.

 Redistribution and use in source and binary forms, with or without modification,
 are prohibited.

 $Id$

**************************************************************************************/

#include <ubixfs/ubixfs.h>
#include <ubixfs/file.h>
#include <drivers/fdc.h>
#include <drivers/video.h>

int startSector;

void initUbixFS() {
  int i=0;
  struct bootSect *bs;
  char data[512];
  readBlock(0,data,1);
  bs = (void *)data;
  if ((bs[0].id[0] == 'U') && (bs[0].id[1] == 'b') && (bs[0].id[2] == 'i') && (bs[0].id[3] == 'x') && (bs[0].id[4] == 'F') && (bs[0].id[5] == 'S')) {
    startSector = bs[0].fsStart;
    kprintf("UbixFS Initialized\n");
    }
  else {
    kprintf("Insert System Disk\n");
    initUbixFS();
    }
  for (i=0;i<maxFd;i++) {
    fdTable[i].status = fdAvail;
    }
  }

int kstrcmp(char *str1, char *str2) {
  while(*str1 == *str2 && *str1!=0 && *str2!=0) { str1++; str2++; }
  if(*str1 == *str2) return 0;
  if(*str1 > *str2) return 1;
  if(*str1 < *str2) return -1;
  return -1;
  }

int readFile(char *file) {
  struct fileTableEntry ft[1];
  char data[2048];
//  findFile(file,ft);
  if (ft->start > 1000) { }
  else {
    readBlock(ft->start,data,ft->length);
    kprint(data);
    }
  return(0);
  }

int getFileByte(int fd,int offset) {
  int ch=0,mp=0;
  mp = offset/512;
  if ((offset%512 == 0) && (fdTable[fd].status == fdRead)) {
    fdTable[fd].status = fdOpen;
    }
  if (offset < fdTable[fd].size) {
    if (fdTable[fd].status != fdRead) {
      readBlock(fdTable[fd].start+mp,fdTable[fd].buffer,1);
      fdTable[fd].status = fdRead;
      }
    ch = fdTable[fd].buffer[offset-(mp*512)];
    }
  else {
    ch = -1;
    fdTable[fd].status = fdEof;
    }
  return(ch);
  }

int findFile(char *file,struct fileDescriptorTable *head) {
  int i=0;
  struct fileTableEntry *ft;
  char data[4096];
  readBlock(startSector,data,8);
  ft = (void *)data;
  for (i=0;i<128;i++) {
    if (!kstrcmp(ft[i].fileName,file)) {
      head->start = ft[i].start;
      head->length = ft[i].length;
      head->size = ft[i].size;
      return(1);
      }
    }
  return(0);
  }