truncate-html.vtl

#macro( truncateHTML $html $words $textToAdd $contentAtVeryEnd )##
#if( $UtilMethods.isSet($html) )##
## DEFAULT VARS
#set( $inputHTML = '' )##
#set( $html = $html.replaceAll("\s+", ' ') )##
#if( !$UtilMethods.isSet($words) )##
#set( $words = 20 )##
#end##
##
## WORD COUNT
#set( $htmlArray = $html.split("\s") )##
#foreach($i in [0..$words])##
#set( $inputHTML = "$inputHTML $!{htmlArray.get($i)}" )##
#end##
##
##CHECK FOR BROKEN TAGS
#set( $tagArray = [] )##
#foreach( $char in $inputHTML.split("<") )##
#if( $UtilMethods.isSet($char) )##
## FIND TAG
#set( $endOfElementSpace = $char.indexOf(' ')+1 )##
#set( $endOfElementCaret = $char.indexOf('>')+1 )##
#if( $endOfElementSpace < $endOfElementCaret && $endOfElementSpace > 0 )##
#set( $endOfElement = $endOfElementSpace )##
#else##
#set( $endOfElement = $endOfElementCaret )##
#end##
##
## SET TAG AND ADD TO TAG ARRAY
#set( $tag = $char.substring(0,$endOfElement) )##
#if( $tag.matches("/?(br|hr|input)>") == false )##
#if( $char.substring(0,1) == '/' )##
#set( $_dummy = $tagArray.remove( $math.sub($tagArray.size(), 1) ) )##
#else##
#set( $_dummy = $tagArray.add( $tag ) )##
#end## $char.substring
#end## search( "(br|hr|input)" )
#end## isSet $char
#end## foreach $char
##
## REPAIR BROKEN TAGS
#set( $fixedHTML = $inputHTML )##
#if( $UtilMethods.isSet($textToAdd) )##
#set( $fixedHTML = "${fixedHTML}${textToAdd}" )##
#end##
#if( $tagArray.size() > 0 )##
#foreach( $tagNum in [$math.sub($tagArray.size(),1)..0] )##
#set( $tag = $tagArray.get($tagNum).replaceAll(">| ", '') )##
#if( $UtilMethods.isSet($contentAtVeryEnd) && $tagNum == 0 )##
#set( $fixedHTML = "${fixedHTML}${contentAtVeryEnd}</${tag}>" )##
#end##
#set( $fixedHTML = "${fixedHTML}</${tag}>" )##
#end##
#end##
$fixedHTML
#end## isset $html
#end## truncateHTML