April 2nd, 2005, 12:29 AM
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Join Date: Mar 2005
Posts: 9
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Renamed files are 0 bytes in size. help!!
Quote: | Originally Posted by anaveens When I use rename(oldfile, newfile) ....I am NOT getting erro. The file is renamed
But the renamed file is a ZERO byte file. How do I fix this? I AM NOT GETTING
ANY ERROR MESSAGES
....
....
if ( rename( exportFileName, new_export_file_name ) != 0 )
{
cout << "Unable to rename " << exportFileName << " to "
<< new_export_file_name << " Terminating ... " << NEW_LINE;
db2Helper.disconnectFromDB();exit(1);
}
....
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I had the same problem that you do, all of my renamed files were 0 bytes in size for some reason. I finally figured it out. This code should fix your problem. I wish that they had more useful documentation on the rename() function in ANSI C++. Don't forget to include <iostream> and <fstream>
Code:
// ios::in opens in read only mode, ios::nocreate do not create the file if it doesn't exist.
ofstream inFile;
inFile.open("MyFile.txt", ios::in | ios::nocreate);
// Check to make sure the file exists before proceeding
if (!inFile) {
// Close the phantom file, exit with error
inFile.close();
cout << "Error no file." << endl;
return -1;
}
else {
// First close file so it's not in use!
inFile.close();
// Everything is ok, so rename the file
int result;
result = rename("MyFile.txt", "NewFile.txt";
// Error check
if (result != 0 ) {
cout << "Error on rename." << endl;
return -1;
}
// Got to here, so successful rename
cout << "successful rename" << endl;
return;
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