Add YouTube normalisation script

youtube-normalise

@@ -0,0 +1,29 @@
+#!/bin/bash
+while read -r url
+do
+	if [[ "${url}" =~ ^https?://(www\.)?youtube\.com/ ]]
+	then
+		if [[ "${url}" == *'?'* ]]
+		then
+			rurl="${url}&disable_polymer=1"
+		else
+			rurl="${url}?disable_polymer=1"
+		fi
+		page="$(curl -4sL -A 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36' -H 'Accept-Language: en-US,en;q=0.5' "${rurl}")"
+		canonical="$(grep -Po '<link itemprop="url" href="http://www\.youtube\.com/\Kuser/[^"]+' <<< "${page}")"
+		if [[ "${canonical}" ]]
+		then
+			echo "https://www.youtube.com/${canonical}"
+		else
+			canonical="$(grep -Po '<link itemprop="url" href="http://www\.youtube\.com/\Kchannel/[^"]+' <<< "${page}")"
+			if [[ "${canonical}" ]]
+			then
+				echo "https://www.youtube.com/${canonical}"
+			else
+				echo "${url}"
+			fi
+		fi
+	else
+		echo "${url}"
+	fi
+done