How to get base64 of any file.

[ansari_abdullah]

I am writing a program in Droid Script to get out base64 of any file
suppose [ var file = app.ReadFile('/file/location/'); ]
i have declared file location, now how should i get out the base64 of that file stored in *file* variable, please answer..!!
Thnx!

[Steve Garman]

Unfortunately, you have done much more than define the file location, you have attempted to read the contents of the file into a string variable.

That is fine if it is a text file but will cause problems if the file contains unpredictable binary data.

Base64 encoding of binary files in DroidScript is difficult. I have not yet done it reliably.

Can you explain what you are trying to achieve, please.

It may be much easier to offer you a simpler transmissible format, especially if the file needs to be recreated at the end of the process using DroidScript.

[Steve Garman]

If the other clients may not be written in DroidScript, you will probably need to find someone who has a DS plugin to base64 encode binary files.

If all the clients are using DroidScript, I would recommend bypassing Base64 and using app.CreateFile for both read and write.

The hex format available in app.CreateFile should be perfectly transmissible via the node server.

function OnStart()
{
  // read contents of file
  var fil = "/sdcard/Hello.png";
 
        var file = app.CreateFile( fil, "r" );
        var len = file.GetLength();
 
        var data = file.ReadData( len,"hex" );
 
        file.Close();
       
        // display data
        alert(data);
        var data2 = data;
       
        // write copy of file
        var fil2 = "/sdcard/testout.png";
        app.DeleteFile( fil2 );
        var file2 = app.CreateFile( fil2, "rw" );
        file2.Seek(0);
        file2.WriteData(data2, "hex");
        file2.Close();
}

[Dave Smart]

You can use the "base64" option with the app.ReadFile() method to get the binary data as base64 text which can be sent to online servers.