A Memory Map Code Bit

[r3d dra6on]

The following bit of code is only the memory mapping part, but I am unsure about the output area of the code. I know how to bring in an input file, but I am unsure if this code sends out an output file. Also, is there a reference site that I can be pointed to about how to write to the output file. I am stuck on trying to figure out how to get the information from the first file (the input) to the second file (the output). I am pretty sure the code below is incomplete, only on the reason of I don't know how to connect it, and I can't find the correct reading sources to help me out. Thank you in advance.

#include <windows.h>
#include <iostream>
using namespace std;
 
int main()
{
HANDLE OutFile;
HANDLE InFile;
HANDLE InFileMap;
HANDLE OutFileMap;
PVOID InPVFile;
PVOID OutPVFile;
DWORD InDWFileSize;
DWORD OutDWFileSize;
int i;
 
//Opening an input file.
 
char OutFilename[] = “c:\\exe1\\testin.dat”;
 
OutFile = CreateFile(InFilename, 
GENERIC_READ,
0,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL, 
NULL);
if (InFile == INVALID_HANDLE_VALUE)
{
    cout << “File could not be opened.”;
    return(FALSE);
}
 
//Creating a file-mapping kernel object for input.
 
InFileMap = CreatFileMapping(InFile,
    NULL,
    PAGE_READONLY,
    0,
    0,
    NULL);
if (InFileMap == NULL)
{
    cout << “File map could not be opened.”;
    ClosrHandle(InFile);
    return(FALSE);
}
 
//Mapping a view of the input file.
 
InPVFile = MapViewOfFile(InFileMap,
    FILE_MAP_READ,
    0,
    0,
    0);
if (InPVFile == NULL)
{
    cout << “Could not map view of file.”;
    CloseHandle(InFileMap);
    CloseHandle(InFile);
    return(FALSE);
}
 
//Gathering the size of the input file.
 
InDWFileSize = GetFileSize(InFile, NULL);
 
//Creating an output file.
 
char OutFilename[] = “c:\\exe1\\testout.dat”;
 
OutFile = CreateFile(OutFilename, 
GENERIC_READ | GENERIC_WRITE,
0,
 NULL,
 CREATE_NEW, 
FILE_ATTRIBUTE_NORMAL, 
NULL);
if (OutFile == INVALID_HANDLE_VALUE)
{
    cout << “File could not be created.”;
    return(FALSE);
}
 
//Creating a file-mapping kernel object for output.
 
OutFileMap = CreatFileMapping(OutFile,
    NULL,
    PAGE_WRITECOPY,
    0,
    0,
    NULL);
if (OutFileMap == NULL)
{
    cout << “File map could not be created.”;
    ClosrHandle(OutFile);
    return(FALSE);
}
 
//Mapping a view of the output file.
 
OutPVFile = MapViewOfFile(OutFileMap,
    FILE_MAP_COPY,
    0,
    0,
    0);
if (OutPVFile == NULL)
{
    cout << “Could not map view of file.”;
    CloseHandle(OutFileMap);
    CloseHandle(OutFile);
    return(FALSE);
}
 
//Switching the ASCII characters.
 
//???
 
//Housekeeping
 
UnmapViewOfFile(InPVFile);
UnmapViewOfFile(OutPVFile);
CloseHandle(InFileMap);
CloseHandle(OutFileMap);
CloseHandle(InFile);
CloseHandle(OutFile);
}
 

[Banfa]

This looks like a rather complex way to copy a file when you could just call CopyFileEx