Sets password protection for an existing Excel file.

This function adds password protection to an existing file without loading it into memory.

Parameters

• input_path - Path to the input Excel file
• output_path - Path where the protected file should be saved
• password - The password to protect the file with

Returns

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

Examples

:ok = UmyaSpreadsheet.WorkbookFunctions.set_password("input.xlsx", "protected.xlsx", "password123")

Sets workbook protection with a password.

Parameters

• spreadsheet - The spreadsheet struct
• password - The password to protect the workbook with

Returns

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

Examples

{:ok, spreadsheet} = UmyaSpreadsheet.read_file("input.xlsx")
:ok = UmyaSpreadsheet.WorkbookFunctions.set_workbook_protection(spreadsheet, "password123")