CFLib.org – Common Function Library Project

Description:
Checks to see if a file can be written to. It uses the standard Java File object, which makes it very fast under Coldfusion MX.

Return Values:
Returns a boolean.

Example:

<cfset filename="c:\autoexec.bat">
<cfoutput>
    Can write to: #FileCanWrite(filename)#<br>
</cfoutput>

Parameters:

Full UDF Source:

/**
 * Checks to see if a file can be written to.
 * 
 * @param filename      The name of the file. (Required)
 * @return Returns a boolean. 
 * @author Jesse Houwing (j.houwing@student.utwente.nl) 
 * @version 1, November 14, 2002 
 */
function FileCanWrite(filename){
    var daFile = createObject("java", "java.io.File");
    daFile.init(JavaCast("string", filename));
    return daFile.canWrite();
}