We support over 26 languages in TeamworkPM. Today our backup script failed for one customer because the generated file name had bizarre characters in it. To fix this I amended our safeFileName() function to just use alpha-numeric characters. But if all characters are ripped out and we are left with just the extension (eg. ".zip"), then we fall back to a time-stamp. Here's the code:

<cffunction name="SafeFileName" returntype="string" output="No">

<cfargument name="fileName" required="Yes" type="string">

<cfset var result = ARGUMENTS.fileName>

<cfset result = trim( reReplace( result , "[\ \,]", "_", "ALL" ) )>

<cfset result = reReplace( result , "[^a-zA-Z0-9\.\_]", "", "ALL" ) >

<cfif Len( result ) IS 4 AND Left( result, 1 ) IS ".">

<cfset result = dateFormat(now(),"ddmmyyyy") & timeFormat(now(),"hhmmss") & result>

</cfif>

<cfreturn result>

</cffunction>