added xkcd download script

1 files changed, 56 insertions, 0 deletions

diff --git a/xkcd.sh b/xkcd.sh
new file mode 100755
index 0000000..5311434
--- /dev/null
+++ b/xkcd.sh
@@ -0,0 +1,56 @@
+#!/bin/sh
+#
+# downloads xkcd comics
+#
+
+DOWNLOADDIR=$HOME/Ebooks/xkcd/
+
+download_xkcd ()
+{
+	NUMBER=$1
+
+	if [ `ls -1 | grep -c "^${NUMBER}_"` -gt 0 ] || [ $NUMBER -eq 404 ];
+	then
+		return 0
+	fi
+
+	# LINE_URL may contain link to larger comic at beginning
+	LINE_URL=`wget http://xkcd.com/$NUMBER/ -q -O - | grep "<img src=.*title=.*alt="`
+	URL=`echo $LINE_URL | cut -d '"' -f 2`
+	LINE_IMG=`echo $LINE_URL | sed 's/.*\(<img src=.*\)/\1/'`
+	#TITLE=`echo $LINE_IMG | cut -d '"' -f 4`
+	#ALT=`echo $LINE_IMG | cut -d '"' -f 6`
+
+	# url leads to an external site
+	if [ `echo $URL | grep -c "^http://imgs.xkcd.com/comics/"` -eq 0 ];
+	then
+		URL=`echo $LINE_IMG | cut -d '"' -f 2`
+	fi
+
+	FILENAME="${NUMBER}_`echo $URL | cut -d '/' -f 5`"
+
+	echo -n "Downloading xkcd #$NUMBER"
+	wget $URL -q -O $FILENAME
+	# does not work with jpg
+	#mogrify -comment "$TITLE" $FILENAME
+	echo "."
+
+	return 0
+}
+
+
+if [ ! -d $DOWNLOADDIR ];
+then
+	echo "Creating download directory $DOWNLOADDIR"
+	mkdir -p $DOWNLOADDIR
+fi
+
+cd $DOWNLOADDIR
+
+CURRENT=`wget http://xkcd.com/ -q -O - | grep "Permanent link to this comic: " | cut -d '/' -f 4`
+
+for i in `seq $CURRENT -1 1`;
+do
+	download_xkcd $i
+done
+