display downloadable files

When making the notebook where I included the Downloader class, I noticed it was not possible to easily display the downloadable files. In this branch I have mad a class function that prints the info in a nice format - it collects it from the page, so it updates, when more data is added.

qim3d/io/_downloader.py

@@ -62,6 +62,34 @@ class Downloader:
         for idx, folder in enumerate(folders):
             exec(f"self.{folder} = self._Myfolder(folder)")
 
+    def file_directory(self):
+        """Generate and print formatted folder, file, and size information."""
+
+        url_dl = "https://archive.compute.dtu.dk/download/public/projects/viscomp_data_repository"
+
+        folders = _extract_names()
+        
+        table_header = f"{'Folder name':<20} | {'File name':<105} | {'File size':<15}"
+        table_separator = "-" * len(table_header)
+        log.info(table_header)
+        log.info(table_separator)
+
+        for folder in folders:
+            files = _extract_names(folder)
+            formatted_files = []
+            formatted_sizes = []
+            
+            for file in files:
+                url = os.path.join(url_dl, folder, file).replace("\\", "/")
+                file_size = _get_file_size(url)
+                formatted_files.append(f"`{file[:-len(file.split('.')[-1])-1].replace('%20', '_')}`")
+                formatted_sizes.append(_format_file_size(file_size))
+            
+            file_list_str = ", ".join(formatted_files)
+            size_list_str = ", ".join(formatted_sizes)
+
+            log.info(f"{'`' + folder + '`':<20} | {file_list_str:<105} | {size_list_str:<15}")
+        
     class _Myfolder:
         """Class for extracting the files from each folder in the Downloader class.
 
@@ -231,3 +259,17 @@ def _extract_names(name: str = None):
         folders = [element.split(" ")[0][4:-4] for element in split]
 
         return folders
+
+def _format_file_size(size_in_bytes):
+    # Define size units
+    units = ["B", "KB", "MB", "GB", "TB", "PB"]
+    size = float(size_in_bytes)
+    unit_index = 0
+
+    # Convert to appropriate unit
+    while size >= 1024 and unit_index < len(units) - 1:
+        size /= 1024
+        unit_index += 1
+
+    # Format the size with 1 decimal place
+    return f"{size:.2f}{units[unit_index]}"