Regular expression for finding class names in HTML

Question

I\'d like to use grep to find out if/where an html class is used across a bunch of files. The regex pattern should find not only

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Answer 1

Don't do it. It will drive you insane: RegEx match open tags except XHTML self-contained tags

Instead, use a HTML parser. It's not hard.

EDIT: Here's an example in PowerShell

Get-ChildItem -Recurse *.html | where { 
    ([xml](Get-Content $_)).SelectNodes( '//*' ) | where { $_.GetAttribute( "class" ).Contains( "foo" ) } 
}