How can I transform a link to a file name? - google-apps-script

Question

I have a Google spreadsheet file with almost 2000 rows of URL such as this one:
https://docs.google.com/uc?id=0B4ptELk-D3USblk1aWd1OWowRWs
Each URL contains an image, stored in Google Drive. My question is: How can I transform this link ( https://docs.google.com/uc?id=0B4ptELk-D3USblk1aWd1OWowRWs) to a file name? For instance, I would like to know if it could be a /something/folder/Photofile1.jpg.
Is there anyway of doing this?

Answer 1

Try script:
function TESTgetFileName() {
Logger.log(getFileName('0B4ptELk-D3USVi1NZ3ZGbkhqYXc'));
// ^^^^^^^^^^ file ID ^^^^^^^^^
}
function getFileName(id) {
var file = DriveApp.getFileById(id);
var fileName = file.getName();
var strFolders = getFolders(file);
return strFolders + '/' + fileName;
}
function getFolders(object) {
var folders = object.getParents();
if (!folders.hasNext()) { return 'My Drive'; }
var folder = folders.next();
var folderNames = [];
while (folder.getParents().hasNext()) {
var folderName = folder.getName();
folderNames.unshift(folderName);
folder = folder.getParents().next();
}
return folderNames.join('/');
}
Script function will return the result:
0B4ptELk-D3USVi1NZ3ZGbkhqYXc → My Drive/something/folder/Photofile1.jpg
Tests
I opened script editor, selected function TESTgetFileName and get the result
My Drive/Detalhes_Farmacia.Fotografia_Fachada_1.JPEG.
This function can be run from script, not directly from spreadsheets. When you try using it as custom formula from sheet, it throws error:
You do not have permission to call getFileById (line 8).
So better use it from script to get data and then write the result to the sheet.