add giturl function

diff --git a/.zsh/func/giturl b/.zsh/func/giturl
new file mode 100755 (executable)
index 0000000..26587e2
--- /dev/null
+++ b/.zsh/func/giturl
@@ -0,0 +1,29 @@
+#!/bin/sh
+#
+# func/giturl
+#
+# a convenient way to display the gitweb URL of a commit-ish
+#
+# Copyright © 2010 martin f. krafft <madduck@madduck.net>
+# Released under the terms of the Artistic Licence 2.0
+#
+# Source repository: git://git.madduck.net/etc/zsh.git
+#
+
+local GITWEB_BASE
+GITWEB_BASE=http://git.madduck.net/v
+
+local REMOTE
+REMOTE=$(git config --get remote.origin.url)
+
+local part
+case "$REMOTE" in
+  madduck:pub/*) part="${REMOTE#madduck:pub/}";;
+  *)
+    echo >&2 "E: I do not know how to translate $REMOTE into a gitweb URL."
+    return 1
+    ;;
+esac
+
+HASH=$(git rev-parse HEAD)
+echo $GITWEB_BASE/$part/commitdiff/$HASH