Pastable version of Validate CSS classnames in a set of strings

<pre class='prettyprint' language='java'>// Check to make sure value is non-null and matches CSS grammar
// A property may contain more than one class name so we need to
// check each potential class name in the string.
for (Map.Entry&lt;String, String&gt; entry : chromeCssProps.entrySet()) {
	String property = entry.getValue();

if (property == null) {
		property = &quot;&quot;;
		if (LOGGER.isDebugEnabled()) {
			LOGGER.debug(&quot;Property was null: &quot; + entry.getKey());
		}
	} else {
		String[] classNames = property.split(&quot;\\s+&quot;);
		for (String s : classNames) {
			if (!s.matches(&quot;-?[_a-zA-Z]+[_a-zA-Z0-9-]*&quot;)) {
				property = property.replace(s, &quot;&quot;);
				if (LOGGER.isInfoEnabled()) {
					LOGGER.info(&quot;Invalid CSS class name in &quot;
							+ entry.getKey() + &quot;: &quot;
							+ s);
				}
			}
		}
	}

entry.setValue(property);
}</pre>
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Pastable version of Validate CSS classnames in a set of strings