Sets the border style for a cell.

Parameters

• spreadsheet - The spreadsheet struct
• sheet_name - The name of the sheet
• cell_address - The cell address (e.g., "A1", "B5")
• border_position - The border position ("top", "right", "bottom", "left", "diagonal", "outline", "all")
• border_style - The border style ("thin", "medium", "thick", "dashed", "dotted", "double", "none")

Returns

• :ok on success
• {:error, reason} on failure

Examples

{:ok, spreadsheet} = UmyaSpreadsheet.read_file("input.xlsx")
# Set top border to thick
:ok = UmyaSpreadsheet.BorderFunctions.set_border_style(spreadsheet, "Sheet1", "A1", "top", "thick")

# Set all borders to thin
:ok = UmyaSpreadsheet.BorderFunctions.set_border_style(spreadsheet, "Sheet1", "B2", "all", "thin")