isSpreadsheetFile - cfsimplicity/spreadsheet-cfml GitHub Wiki
Determines whether or not a file is a binary or xml spreadsheet.
isSpreadsheetFile( path )
Required arguments
pathstring: full path to the file to check
Chainable? No.
Example
spreadsheet = New Spreadsheet();
filepath = ExpandPath( "report.xls" );
result = spreadsheet.isSpreadsheetFile( filepath );