CFLib.org – Common Function Library Project

CompareIgnoreWhiteSpace(string1, string2[, isCompareCaseSensitive])

Last updated December 2, 2008

author

Mark G. Smith

Version: 1 | Requires: CF5 | Library: StrLib

Description:
Performs a comparison of two strings ignoring any whitespace characters including form feeds, line feeds, carriage returns, tabs, vertical tabs, and spaces. Comparison is case sensitive unless a third argument of "false" is passed in.

Return Values:
Returns a boolean.

Example:

<cfset str1 = "The quick brown fox jumps over the lazy dog.">
<cfset str2 = "The quick brown 	fox jumps over the lazy     dog.">
<cfset strChange = CompareIgnoreWhiteSpace(str1,str2)>
<cfif strChange eq 0>
	The strings are equal!
<cfelse>
	The strings are NOT equal!
</cfif>

Parameters:

Name Description Required
string1 First string to compare. Yes
string2 Second string to compare. Yes
isCompareCaseSensitive Determines if the comparison should check case. Default is true. No

Full UDF Source:

/**
 * Performs a comparison of two strings ignoring any whitespace characters.
 * 
 * @param string1 	 First string to compare. (Required)
 * @param string2 	 Second string to compare. (Required)
 * @param isCompareCaseSensitive 	 Determines if the comparison should check case. Default is true. (Optional)
 * @return Returns a boolean. 
 * @author Mark G. Smith (mark.g.smith@baesystems.com) 
 * @version 1, December 2, 2008 
 */
function CompareIgnoreWhiteSpace(string1,string2) {
	var string1NoWhiteSpace = REReplace(string1,"[\s]","","ALL");
	var string2NoWhiteSpace = REReplace(string2,"[\s]","","ALL");
	var isCompareCaseSensitive = true;
	
	if(arrayLen(arguments) gte 3) isCompareCaseSensitive = arguments[3];
	
	if (isCompareCaseSensitive)
		return Compare(string1NoWhiteSpace, string2NoWhiteSpace);
	else
		return CompareNoCase(string1NoWhiteSpace, string2NoWhiteSpace);
}
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