1 files changed, 41 insertions, 0 deletions
diff --git a/libtests/qtest/arg_parser/filter-completion.pl b/libtests/qtest/arg_parser/filter-completion.pl
new file mode 100644
index 00000000..2d176309
--- /dev/null
+++ b/libtests/qtest/arg_parser/filter-completion.pl
@@ -0,0 +1,41 @@
+use warnings;
+use strict;
+
+# THIS SCRIPT IS ALSO USED IN qpdf.test
+
+# Output every line from STDIN that appears in the file.
+my %wanted = ();
+my %notwanted = ();
+my $f = $ARGV[0];
+if (open(F, "<$f"))
+{
+    while (<F>)
+    {
+        chomp;
+        if (s/^!//)
+        {
+            $notwanted{$_} = 1;
+        }
+        else
+        {
+            $wanted{$_} = 1;
+        }
+    }
+    close(F);
+}
+while (<STDIN>)
+{
+    chomp;
+    if (exists $wanted{$_})
+    {
+        print $_, "\n";
+    }
+    elsif (exists $notwanted{$_})
+    {
+        delete $notwanted{$_};
+    }
+}
+foreach my $k (sort keys %notwanted)
+{
+    print "!$k\n";
+}