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dot_oh-my-zsh/plugins/torrent/README.md

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+# torrent
+
+This plugin creates a Torrent file based on a [MagnetURI](https://en.wikipedia.org/wiki/Magnet_URI_scheme).
+
+To use it, add `torrent` to the plugins array in your zshrc file.
+
+```zsh
+plugins=(... torrent)
+```
+
+## Plugin commands
+
+* `magnet_to_torrent <MagnetURI>`: creates Torrent file.

dot_oh-my-zsh/plugins/torrent/torrent.plugin.zsh

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+#
+# Algorithm borrowed from http://wiki.rtorrent.org/MagnetUri and adapted to work with zsh.
+#
+
+function magnet_to_torrent() {
+	[[ "$1" =~ xt=urn:btih:([^\&/]+) ]] || return 1
+
+	hashh=${match[1]}
+
+	if [[ "$1" =~ dn=([^\&/]+) ]];then
+	  filename=${match[1]}
+	else
+	  filename=$hashh
+	fi
+
+	echo "d10:magnet-uri${#1}:${1}e" > "$filename.torrent"
+}