Hi,
I try to package some maps for navit. Because I don't want to waste hard
disk space on the SHR server I want to use postinst and postrm and
download the maps from cloudmade.com [0].
The problems:
* maps are really big and you might get problems if you don't use a
memory card
* navit needs a fixed directory for maps in the config file(see PATCH #3)
* How should the versioning be done (cloudmade updates weekly)
My ideas:
* The sze of the maps must be known before downloading
* figure out which partition has enough space left, else bail out
* create a link to /usr/share/navit/maps
* remove everything on postrm
My new problems:
* My test package for andorra is empty
* Some fights against navit compilation
Is this a bad or good idea? Could someone help me to fix the issues and
add the rest of the World?
Regards, Frederik
P.S.: I created a screenshot for the navit config from my patches:
http://scap.linuxtogo.org/files/8a5696050bc8f713dedef532303f1df7.png
[0] http://downloads.cloudmade.com/
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DESCRIPTION = "Navit Map for ${COUNTRY}"
DEPENDS = "navit wget"
LICENSE = "GPL"
SECTION = "optional"
postinst_append() {
PARTITIONS=$(mount | grep ^/ | cut -d ' ' -f 3)
EXPECTED_SIZE=${EXPECTED_SIZE}
TMP=${${PN}##navit-map-}
COUNTRY=${TMP/-/_}
BIGGEST_PART=""
BIGGEST_SIZE=0
for p in $PARTITIONS; do
SIZE=$(df | grep "$p$" | cut -b 41-50)
if [ $SIZE -gt $BIGGEST_SIZE ] ; then
BIGGEST_PART=$p
BIGGEST_SIZE=$SIZE
fi
done
echo "Biggest Partition: $BIGGEST_PART"
if [ $BIGGEST_SIZE -lt ${EXPECTED_SIZE} ] ; then
echo "Not enough free space on $BIGGEST_PART"
exit 1;
else
DL_DIR=$BIGGEST_PART/Maps/
mkdir -p $DL_DIR
cd $DL_DIR && \
wget -O $COUNTRY.bin.zip
"http://downloads.cloudmade.com/europe/andorra/${COUNTRY}.navit.bin.zip"; && \
unzip $COUNTRY.bin.zip && \
rm -f $COUNTRY.bin.zip && \
mkdir -p /usr/share/navit/maps/ && \\
ln -s $COUNTRY /usr/share/navit/maps/
fi
}
postrm_append() {
COUNTRY=${${PN}##navit-map-}
LINK="/usr/share/navit/maps/$COUNTRY"
ORIG=$(readlink $LINK)
rm -f $ORIG $LINK
}
EXPECTED_SIZE = 280000 require navit-maps.inc
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