ColdFusion Compress HTML

compressHtml

/**
* @hint Removes whitespace from HTML code
  Originally authored by Jordan Clark ([email protected])
*/
public string function compressHtml(
	required string html,
	numeric level = 2
){
	local.response = this.trim(arguments.html);

	if (arguments.level == 1) {
		// Remove whitespace at beginning of line
		local.response = reReplaceNoCase(local.response, "\n+\s+", chr(10), "all");
	}

	if (arguments.level >= 2) {
		// Replace multiple whitespace characters with a single space
		local.response = reReplaceNoCase(local.response, "\s{2,}", " ", "all");
	}

	if (arguments.level >= 3) {
		// Remove whitespace in between angle brackets
		local.response = reReplaceNoCase(local.response, ">\s+<", "><", "all");
		// Remove HTML and CF comments
		local.response = reReplaceNoCase(local.response, "<!--[^>]+>", "", "all");
	}

	// Remove whitespace in between paired punctuation
	if (arguments.level >= 4) {
		local.response = reReplaceNoCase(local.response, "([>\(\{\[])\s+", "\1", "all");
		local.response = reReplaceNoCase(local.response, "\s+([<\)\}\]])", "\1", "all");
	}

	return local.response;
}