X-Git-Url: https://git.distorted.org.uk/~mdw/xfonts-traditional/blobdiff_plain/be65f15aacb3b55f504a18f7eecac9356d71e2ce..HEAD:/checkfiles

diff --git a/checkfiles b/checkfiles
index c3d325b..9c8f36a 100755
--- a/checkfiles
+++ b/checkfiles
@@ -2,55 +2,71 @@
 # run from the prerm and postinst
 set -e
 
-install=$1
+script=$1
+mode=$2
 
-check_file () {
-	dckey=$1; regexp=$2; file=$3
-
-	if ! test -f $file; then return; fi
-
-	if $install; then
-		if test -e $file.not-trad; then return; fi
-		before=misc
-		after=trad
-		newfile=$file.trad
-		oldfile=$file.not-trad
-	else
-		if ! test -e $file.not-trad; then return; fi
-		before=trad
-		after=misc
-		newfile=$file.undo-trad
-		oldfile=$file.trad
-	fi
+. /usr/share/debconf/confmodule
 
+gen_file_overwrite () {
+	before=$1; after=$2; infile=$3; outfile=$4; backupmode=$5; backup=$6
 	perl -pe '
  s/^('"$regexp"'\s+)\-'$before'\-(fixed-medium-r-semicondensed)/$1-'$after'-$2/
-		' <$file >$file
-	if cmp -s $file $newfile; then
-		rm $newfile
+		' <$infile >$outfile.tmp
+	if cmp -s $outfile.tmp $outfile; then
+		rm $outfile.tmp
 		return
 	fi
-
-	db_get $dckey
-	if [ $RET != true ]; then return; fi
-
-	if $install; then
-		db_get $dckey-done || true
-		if [ $RET = true ]; then return; fi
-
-		echo "Updating $file to use traditional fixed..."
-	else
-		echo "Restoring $file with nontraditional fixed..."
-	fi
-	rm -f $oldfile
-	ln $file $oldfile
-	mv -f $newfile $file
+	echo " Updating $file ($before=>$after)..."
+	case $backupmode in
+	once)
+		if ! test -e $backup; then
+			ln $outfile $backup
+		fi
+		;;
+	never)
+		;;
+	esac
+	mv -f $outfile.tmp $outfile
 
 	case "$file" in
 	*.alias) update-fonts-alias misc ;;
 	esac
+}
+
+check_file () {
+	dckey=$1; regexp=$2; file=$3
 
-	db_set $dckey-done $install
+	if ! test -f $file; then return; fi
+
+	needundo=true
+
+	case "$script.$mode" in
+	postinst.*)
+		db_get xfonts-traditional/$dckey ||:
+		if [ $RET = true ]; then
+			gen_file_overwrite misc trad \
+				$file $file once $file.backup.not-trad
+			needundo=false
+		else
+			gen_file_overwrite misc trad \
+				$file $file.trad never
+		fi
+		;;
+	prerm.upgrade*)
+		needundo=false
+		;;
+	prerm.remove*)
+		;;
+	*)
+		echo >&2 "huh $script.mode ?"
+		exit 1
+		;;
+	esac
+	if $needundo && test -f $file.backup.not-trad; then
+		gen_file_overwrite trad misc \
+			$file $file $file.backup.trad
+		mv -f $file.backup.not-trad $file.old.not-trad
+	fi
 	# only ever do this once, unless we've actually undone it since
 }
 
@@ -62,3 +78,4 @@ check_file reconfigure-xterm '\*VT100\.utf8Fonts\.font\:' \
 check_file remap-fixed 'fixed' \
 	/etc/X11/fonts/misc/xfonts-base.alias
 
+true