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Copy a file from one location to another

A function which is not OS dependent, which copies one file to another by opening the file, and writing it to another. Works with all file extensions.

Submitted By: gabehabe

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Views: 673

Language: C++

Last Modified: August 26, 2008

Snippet

/*
* A portable function to copy the contents of a file
* to another location
* author: Danny Battison
* contact: gabehabe@hotmail.com
*/
#include <fstream>
bool copyFile (const char SRC[], const char DEST[])
{
std::ifstream src; // the source file
std::ofstream dest; // the destination file
src.open (SRC, std::ios::binary); // open in binary to prevent jargon at the end of the buffer
dest.open (DEST, std::ios::binary); // same again, binary
if (!src.is_open() || !dest.is_open())
return false; // could not be copied
dest << src.rdbuf (); // copy the content
dest.close (); // close destination file
src.close (); // close source file
return true; // file copied successfully
}
/** EXAMPLE USAGE **/
#include <iostream>
int main ()
{
if (!copyFile ("C:\\lol.txt", "C:\\gabehabe.txt"))
std::cout << "File could not be copied successfully";
else
std::cout << "File copied successfully!";
std::cin.get (); // pause for input
return EXIT_SUCCESS; // program was executed successfully
}

Copy & Paste

/*
 * A portable function to copy the contents of a file
 * to another location
 * author: Danny Battison
 * contact: gabehabe@hotmail.com
 */

#include <fstream>

bool copyFile (const char SRC[], const char DEST[])
{
    std::ifstream src; // the source file
    std::ofstream dest; // the destination file

src.open (SRC, std::ios::binary); // open in binary to prevent jargon at the end of the buffer
    dest.open (DEST, std::ios::binary); // same again, binary
    if (!src.is_open() || !dest.is_open())
        return false; // could not be copied

dest << src.rdbuf (); // copy the content
    dest.close (); // close destination file
    src.close (); // close source file

return true; // file copied successfully
}

/** EXAMPLE USAGE **/

#include <iostream>

int main ()
{
    if (!copyFile ("C:\\lol.txt", "C:\\gabehabe.txt"))
        std::cout << "File could not be copied successfully";

else
        std::cout << "File copied successfully!";

std::cin.get (); // pause for input
    return EXIT_SUCCESS; // program was executed successfully
}

Comments
malvin 2008-08-20 06:51:10
I tried to use this but it doesn't work. It says "Type qualifier "std" must be a struct or a class name".
gabehabe 2008-08-20 07:39:10
That doesn't sound like an error caused specifically by my snippet. Everything prefixed with std:: is a part of the std namespace. Try removing those std:: prefixes, and then put "using namespace std;" at the beginning of the program. =)
malvin 2008-08-21 02:58:53
I put "using namespace std;" at the beginning of the program but it gives me this: "Declaration syntax error". :(
gabehabe 2008-08-24 08:12:20
Modified to open the files in binary, to prevent outputting jargon on an additional line. =)