// Suzuki 
// Ass #2

// CSCI 6334.01 Fall 2007
// Dr. Tsai

#include <windows.h>
#include <iostream>

using namespace std;

void printError()
{
    switch(GetLastError())
    {
    case ERROR_ACCESS_DENIED:
        cout<<"File Access Denied!"<<endl;
        break;
    case ERROR_FILE_NOT_FOUND:
        cout<<"File Not Found!"<<endl;
        break;
        // add more errors here, if necessary
    }
}

int main(int argc, char *argv[]) 
{
	char *originalFile = new char[128];
    char *newFile = new char[128];

	if( argc == 3) // get data from cmd
	{
		originalFile = argv[1];
		newFile = argv[2];
	}
	else // pompt user for data
	{
		cout<<"Original File: ";
		cin>> originalFile;
		cout<<"New File: ";
		cin>> newFile;
	}

    // open original file to read
    HANDLE h_originalFile = CreateFileA(originalFile,
        GENERIC_READ,FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL,NULL);

    // find out the size of the file to be read
    long fileSize = GetFileSize(h_originalFile,NULL);

    // array to store the bytes
    char * bytes = new char[fileSize];

    DWORD fRead;
    // read all the bytes from the old file
    if( !ReadFile(h_originalFile, bytes,fileSize, &fRead, NULL) )
    {
        cout<<"OOOOooooppppssssss"<<endl;
        printError();
        CloseHandle(h_originalFile);
        return -1;
    }

    // close handle from original file, since you don't need it anymore
    CloseHandle(h_originalFile);

    //open the new file
    HANDLE h_newFile = CreateFileA(newFile,
        GENERIC_WRITE, FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);

    // write to new file
    DWORD wrt;
    if( !WriteFile(h_newFile,bytes,fRead,&wrt,NULL))
    {
        cout<<"OOOOooooppppssssss"<<endl;
        printError();
        CloseHandle(h_newFile);
        return -1;
    }

    // close handle from new file
    CloseHandle(h_newFile);

    return 0;
}