Copy only new files

AFL Programming
1

I am attempting to copying only new files from source directory to destination directory.

I started with FilesystemObject.filecopy with overwrite set to False.

fso = CreateObject("Scripting.FileSystemObject");
 	fso.CopyFile( "C:\\Source\\", "C:\\Destination\\",False ); // copy

However this failed because some already existed and gives a fail.

So I switched to xcopy and created a .bat that I ran from Amibroker batch execute and wait.

xcopy "C:\Source\" "C:\Destination\" /d /s /y

However this will to not work if file is open, so I created another .bat file with Robocopy and ran the .bat file with Amibroker Batch execute and wait.

robocopy "C:\Source" "D:\Destination" /XO /XC

and this seems to work, but my question is, might there be a better way to do this?

2

I am not exactly sure what is your intention of copying only new file.
I assume all files in Source folder as backup and the latest files in Destination folder for processing.

  1. Use this read the file name in a folder and the date is embedded in the filename. You can extract those with the latest date.
    AFL Function Reference - FDIR (amibroker.com)
  2. During the creation of each files in Source folder, duplicate a copy of standard name in Destination folder. In this case, Destination folder will always have the latest files as the old ones get replaced during each file creation cycle.
3

Thanks for your response, how do you suggest I extract those with latest date?

I guess I could use FDIR for source and destination and compare them to one another and know if I should copy the file.

4

This is just an example.
20240909_abc.txt
20240910_abc.txt
You can AFL string function to determine which file is the latest.
FDIR returns a comma separated string.
Use Strextract and check each date in the file name.
AFL Function Reference - STREXTRACT (amibroker.com)

5

ok thanks, they are not currently named this way, but that is a possibility, thanks, but I think the robocopy will work, just know there are a lot smarter minds out here than mine so I wanted to see what suggestions there were.

6

@TibetanTreeFrog, I suggest to take a look at the documentation of:

fgetstatus()

This function retrieves file properties/status including the file date/time (created/modified/last accessed).