CFLib.org – Common Function Library Project

Description:
Determines whether a string is 7bit. Useful for guessing if a string contains binary data (after reading a file using cffile for example).

Return Values:
Returns a boolean.

Example:

<CFSET str1 = "The mat sat on the cat.">
<CFSET str2 = "The mat sat on the c" & chr(225) & "t.">
<CFIF Is7bit(str1)>
    Str1 is 7 bit.<br>
</CFIF>
<CFIF Is7bit(str2)>
    Str2 is 7 bit.<br>
</CFIF>

Parameters:

Full UDF Source:

/**
 * Determines whether a string is 7bit
 * Rewritten by Ray Camden
 * 
 * @param text      String to check. (Required)
 * @return Returns a boolean. 
 * @author Vaughan Allan (vorn@__nospam__vorn.org) 
 * @version 1, August 28, 2003 
 */
function Is7bit(text) {
    if(REFind("[\x80-\xFF]",text)) return false;
    return true;    
}