o Only creating .atom if there has been any new shows, makes conditional gets possible.

1 files changed, 23 insertions, 1 deletions

diff --git a/update-feed.sh b/update-feed.sh
index f0a7508..4afd168 100644..100755
--- a/update-feed.sh
+++ b/update-feed.sh
@@ -1,3 +1,25 @@
 #!/bin/bash
 
-curl -s http://tv.nrk.no/listobjects/recentlysent | dos2unix |xmllint --html --dropdtd --xmlout - 2> /dev/null | xmlstarlet tr ./tv.nrk.no.xsl > tv.nrk.no.atom
+set -e
+set -x
+
+checksum() {
+  [ -r $1 ] && md5sum $1 | cut -f 1 -d ' '
+}
+
+fetch() {
+  curl -s http://tv.nrk.no/listobjects/recentlysent | dos2unix | xmllint --html --dropdtd --xmlout - 2> /dev/null > tv.nrk.no.html.new
+
+  if [ -r tv.nrk.no.html -a "`checksum tv.nrk.no.html.new`" == "`checksum tv.nrk.no.html`" ]
+  then
+    rm -f tv.nrk.no.html.new
+    echo "Already up to date."
+    exit 0
+  fi
+
+  mv tv.nrk.no.html.new tv.nrk.no.html
+}
+
+fetch
+
+cat tv.nrk.no.html | xmlstarlet tr ./tv.nrk.no.xsl > tv.nrk.no.atom