CFLib.org – unIndent

unIndent(str)

Last updated March 7, 2009

author

Version: 0 | Requires: ColdFusion 5 | Library: StrLib

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Description:
Removes unnecessary leading tabs or spaces (whitespace chars) from each line of a string, preserving the formatting while flushing the string left. It is basically a block un-indent (like your IDE probably does with shift-tab).

Return Values:
returns a string

Example:

<pre>
<cfsavecontent variable="str">
<tag>
<child>
</tag>
</cfsavecontent>
<cfoutput>#htmlCodeFormat(unIndent(str))#</cfoutput>
</pre>

Parameters:

Name	Description	Required
str	String to be modified	Yes

Full UDF Source:

	
	<cfscript>
/**
 * Un-indents strings but preserves formatting
 * 
 * @param str      String to be modified (Required)
 * @return returns a string 
 * @author Nathan Strutz (strutz@gmail.com) 
 * @version 0, March 7, 2009 
 */
function unIndent(str) {
    var lines = str.split("\n");
    var i = 0;
    var minSpaceDist = 9999;
    var newStr = "";

    for(i=1; i lte arrayLen(lines); i=i+1) {
        if (len(trim(lines[i]))) {
            minSpaceDist = max( min(minSpaceDist, reFind("[\S]",lines[i])-1), 0);
        }
    }

    for(i=1; i lte arrayLen(lines); i=i+1) {
        newStr = newStr & removeChars(lines[i], 1, minSpaceDist) & chr(10);
    }
    return newStr;
}
</cfscript>