createUniqueFileName(fullpath)
Last updated July 1, 2008
Version: 3 | Requires: ColdFusion 5 | Library: FileSysLib
Description:
Pass a full file path to this function; if the file exists, the function will return a new, unique file name.
Return Values:
Returns a string.
Example:
<cfoutput>Your New File Name: #newFile#</cfoutput>
Parameters:
| Name | Description | Required |
|---|---|---|
| fullpath | Full path to file. | Yes |
Full UDF Source:
<cfscript>
/**
* Creates a unique file name; used to prevent overwriting when moving or copying files from one location to another.
* v2, bug found with dots in path, bug found by joseph
* v3 - missing dot in extension, bug found by cheesecow
*
* @param fullpath Full path to file. (Required)
* @return Returns a string.
* @author Marc Esher (marc.esher@cablespeed.com)
* @version 3, July 1, 2008
*/
function createUniqueFileName(fullPath){
var extension = "";
var thePath = "";
var newPath = arguments.fullPath;
var counter = 0;
if(listLen(arguments.fullPath,".") gte 2) extension = listLast(arguments.fullPath,".");
thePath = listDeleteAt(arguments.fullPath,listLen(arguments.fullPath,"."),".");
while(fileExists(newPath)){
counter = counter+1;
newPath = thePath & "_" & counter & "." & extension;
}
return newPath;
}
</cfscript>
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