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#!/bin/sh
[ "$1" = "-q" ] && quiet=true || quiet=false
set -e
SRC="http://pci-ids.ucw.cz/v2.2/pci.ids"
DEST=pci.ids
PCI_COMPRESSED_IDS=
GREP=grep
# if pci.ids is read-only (because the filesystem is read-only),
# then just skip this whole process.
if ! touch ${DEST} >/dev/null 2>&1 ; then
${quiet} || echo "${DEST} is read-only, exiting." 1>&2
exit 1
fi
if [ "$PCI_COMPRESSED_IDS" -eq 1 ] ; then
DECOMP="cat"
SRC="$SRC.gz"
GREP=zgrep
elif which bzip2 >/dev/null 2>&1 ; then
DECOMP="bzip2 -d"
SRC="$SRC.bz2"
elif which gzip >/dev/null 2>&1 ; then
DECOMP="gzip -d"
SRC="$SRC.gz"
else
DECOMP="cat"
fi
if which curl >/dev/null 2>&1 ; then
DL="curl -o $DEST.new $SRC"
${quiet} && DL="$DL -s -S"
elif which wget >/dev/null 2>&1 ; then
DL="wget --no-timestamping -O $DEST.new $SRC"
${quiet} && DL="$DL -q"
elif which lynx >/dev/null 2>&1 ; then
DL="eval lynx -source $SRC >$DEST.new"
else
echo >&2 "update-pciids: cannot find curl, wget or 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
# Older versions did not compress the ids file, so let's make sure we
# clean that up.
if [ ${DEST%.gz} != ${DEST} ] ; then
rm -f ${DEST%.gz} ${DEST%.gz}.old
fi
${quiet} || echo "Done."
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