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/*============================================================================ 
** Copyright (C) 1998-2012 Vix Technology, All rights reserved
**============================================================================
**
**  Project/Product : 
**  Filename        : CopyFile.c
**  Author(s)       : DDP
**
**  Description     :
**                      The program mimics - but a lot faster a Jats Makefile fragment
**                      The program will:
**
**                      Operate in two modes
**                          CopyFile
**                          DeleteFile
**
**                      CopyFile (5 args)
**                          1) Display the ----- Text dest
**                          2) Error if the source is not found
**                          3) Create target path if not alraedy existing
**                          4) Copy the source to the target - overwritting the target
**                          5) Set File mode
**                          6) Test for file existence
**
**                      DeleteFile (2 args)
**                          1) Display the ----- Text dest
**                          2) Delete the target file
**
**                      Make paths use '/'
**
**
**  Information     :
**   Compiler       : ANSI C++
**   Target         : 
**
***==========================================================================*/

#include <stdio.h>
#include <windows.h>

#define INVALID_FILE_ATTIBUTES ((DWORD) -1)

VOID ErrorExit (LPTSTR lpszMessage, LPTSTR lpszMessage2);
void createPaths ( char *path );

/*----------------------------------------------------------------------------
** FUNCTION           : main
**
** DESCRIPTION        : Main entry points
**
**
** INPUTS             : Arguments are fixed
**                          Text    - Text to output
**                          dest    - Target Path
**                          file    - Source path
**                          path    - Target dir [Not used]
**                          fmode   - File mode
**
** RETURNS            : 0 - All is good
**
----------------------------------------------------------------------------*/
main( int argc, char *argv[] )
{
    DWORD rv;
    char  verbose = 0;
    char  copyMode = 0;

    /*
    **  Allow first argument to be a '-v'
    */
    if ( argc > 1 && argv[1][0] == '-' && argv[1][1] == 'v')
    {
        int ii;
        for ( ii = 0; ii < argc ; ii++ )
        {
            if ( ii != 1 )
                fprintf(stderr, " -Arg%d:%s:\n", ii, argv[ii] );
        }
        fflush(stderr) ;

        verbose = 1;
        argc--;
        argv++;
    }

    /*
    **  Determine mode of operation
    **      Copy or Delete
    */
    if ( argc == 6 ) {
        copyMode = 1;
    } else if ( argc == 3) {
        copyMode = 0;
    } else {
        ErrorExit("Incorrect argument count","");
    }

    /*
    **  Display user text
    */
    fprintf(stderr, "---- %s %s\n", argv[1], argv[2]);
    fflush(stderr) ;

    /*
    **   Check that the source is a file
    */
    if ( copyMode )
    {
        rv = GetFileAttributes( argv[3] );
        if ( rv == INVALID_FILE_ATTIBUTES )
        {
    // Need to be a better message
            ErrorExit("Error: Source File not found: ", argv[3]);
        }
    }

    /*
    **  Remove the ReadOnly attribute on the dest file
    */
    rv = GetFileAttributes( argv[2] );
    if ( rv != INVALID_FILE_ATTIBUTES )
    {
        if ( verbose )
            fprintf(stderr, "FileExists with attr: %ld\n", rv);
        if ( rv & FILE_ATTRIBUTE_READONLY )
        {
            rv &= ~FILE_ATTRIBUTE_READONLY;
            rv = SetFileAttributes( argv[2], rv );
            if ( rv == 0 )
            {
                ErrorExit("Error: Attempt to allow write access: ", argv[2]);
            }
        }

        if (! DeleteFile( argv[2] ) )
        {
                ErrorExit("Error: Deleting file: ", argv[2]);
        }
    }

    if ( copyMode )
    {
        /*
        **  Create directories
        **  Use the path to the target - not the provided directory
        **  as the createPaths function will not create the last element
        */
        createPaths( argv[2] );

        /*
        **   Copy the file
        */
        if ( ! CopyFile( argv[3], argv[2], FALSE ) )
        {
            rv = GetLastError();
            fprintf(stderr, "CopyFileLast Error: %ld\n", rv);
            ErrorExit("Error: Copy Error: ", argv[3]);
        }

        /*
        **  Test for files existence
        */
        rv = GetFileAttributes( argv[2] );
        if ( rv == INVALID_FILE_ATTIBUTES )
        {
    // Need to be a better message
            ErrorExit("Error: File not found after copy: ", argv[2]);
        }

        /*
        **  Set the files attributes
        **      Assume read-only
        */
        rv |= FILE_ATTRIBUTE_READONLY;
        rv &= ~FILE_ATTRIBUTE_NORMAL;
        rv = SetFileAttributes( argv[2], rv );
        if ( rv == 0 )
        {
            ErrorExit("Error: Setting ReadOnly: ", argv[2]);
        }
    }

    return 0;
}

/*----------------------------------------------------------------------------
** FUNCTION           : createPaths
**
** DESCRIPTION        : Create the path to the target
**
**
** INPUTS             : path
**
** RETURNS            : Will not return in error
**
----------------------------------------------------------------------------*/

void createPaths ( char *path )
{
    DWORD rv;
    char *ptr = path;
    while ( *ptr )
    {
        if ( *ptr == '\\' || *ptr == '/' )
        {
            *ptr = 0;
//printf( "Create: %s\n", path );
            if ( ! CreateDirectory ( path, NULL ))
            {
                rv = GetLastError();
                if ( rv != ERROR_ALREADY_EXISTS )
                    ErrorExit("Error: Cound not create directories:", path);
            }
            *ptr = '\\';
        }
        ptr++;
    }
}

/*----------------------------------------------------------------------------
** FUNCTION           : ErrorExit
**
** DESCRIPTION        : Error processing
**                      Report an error and terminate process
**
**
** INPUTS             : lpszMessage     - Message to display
**
** RETURNS            : Does't return
**                      Will exit with bad code
**
----------------------------------------------------------------------------*/

VOID ErrorExit (LPTSTR lpszMessage, LPTSTR lpszMessage2)
{ 
   fprintf(stderr, "%s%s\n", lpszMessage,lpszMessage2);
   fflush(stderr) ;
   ExitProcess(-1);
}