#include  <fstream>
#include  <iostream>
#include  <cstring>
  using namespace  std;

#include  "FixedLen.h"
#include  "Record.h"
#include  "Append.h"

int  main( int argc, char* argv[ ] ) {
  char     str[10], bar;
  char     spaces[128] = "                                                  ";
  int      avail, prev, curr, next, last;
  int      len, size, offset;
  bool     found, head;
  Record   r;
  fstream  file;

  file.open( "books.txt", fstream::in|fstream::out );
  r.ReadData( argv[1], argv[2], argv[3], argv[3] );
  len = r.GetSize( );
  file >> avail >> last;
  prev = curr = next = avail;
  head = true;  found = false;

  while ( ( next != -1 )  && !found ) { 
    file.seekg( curr, fstream::beg );
    file >> size >> offset;
    file.get( str, 10, '|' );
    file >> bar >> next;

    if ( size > len ) {
      found = true;
      file.seekp( curr+12, fstream::beg );
      file <<  r.GetBuf( );
      file.write( spaces, size-len-1 );
      file << '\n';
      if ( head ) {
        file.seekp( 0, fstream::beg );
        file << FixedLen( next, str, 5 );
      }
      else {  
        file.seekg( prev+14, fstream::beg );
        file << FixedLen( next, str, 6 );
      }
    }
    prev = curr;  curr = next;  head = false;
  }

  if ( !found )  r.Append( file5 );
  file.close( );
}