1 files changed, 76 insertions, 0 deletions
diff --git a/update-pciids.sh b/update-pciids.sh
new file mode 100755
index 0000000..3ea4690
--- /dev/null
+++ b/update-pciids.sh
@@ -0,0 +1,76 @@
+#!/bin/sh
+
+set -e
+
+SRC="https://pci-ids.ucw.cz/v2.2/pci.ids"
+DEST=pci.ids
+PCI_COMPRESSED_IDS=
+GREP=grep
+
+[ "$1" = "-q" ] && quiet=true || quiet=false
+
+# 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 [ "$PCI_COMPRESSED_IDS" = 1 ] ; then
+	DECOMP="cat"
+	SRC="$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
+	ln -f $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."