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#!/bin/sh
set -e
SRC="http://pciids.sourceforge.net/pci.ids"
DEST=pci.ids
if which bzip2 >/dev/null ; then
DECOMP="bzip2 -d"
SRC="$SRC.bz2"
elif which gzip >/dev/null ; then
DECOMP="gzip -d"
SRC="$SRC.gz"
else
DECOMP="cat"
fi
if which wget >/dev/null ; then
DL="wget -O $DEST.new $SRC"
elif which lynx >/dev/null ; then
DL="eval lynx -source $SRC >$DEST.new"
else
echo >&2 "update-pciids: cannot find wget nor lynx"
exit 1
fi
if ! $DL ; then
echo >&2 "update-pciids: download failed"
rm -f $DEST.new
exit 1
fi
if ! $DECOMP <$DEST.new >$DEST.neww ; then
echo >&2 "update-pciids: decompression failed, probably truncated file"
exit 1
fi
if ! grep >/dev/null "^C " $DEST.neww ; then
echo >&2 "update-pciids: missing class info, probably truncated file"
exit 1
fi
if [ -f $DEST ] ; then
mv $DEST $DEST.old
# --reference is supported only by chmod from GNU file, so let's ignore any errors
chmod -f --reference=$DEST.old $DEST.neww 2>/dev/null || true
fi
mv $DEST.neww $DEST
rm $DEST.new
echo "Done."
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