[PATCH v4l-utils 1/2] gen_keytables.pl: strip comments from C files

[Sean Young]

Some keymaps contain mappings in comments which should have not been
included.

Cc: Bastien Nocera <had...@hadess.net>
Signed-off-by: Sean Young <s...@mess.org>
---
 utils/keytable/gen_keytables.pl | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/utils/keytable/gen_keytables.pl b/utils/keytable/gen_keytables.pl
index 4124e366..8f3a87e6 100755
--- a/utils/keytable/gen_keytables.pl
+++ b/utils/keytable/gen_keytables.pl
@@ -82,7 +82,17 @@ sub parse_file($$)
 
        printf "processing file $filename\n" if ($debug);
        open IN, "<$filename" or die "couldn't find $filename";
-       while (<IN>) {
+       # read the entire file
+       my $file = do { local $/ = undef; <IN> };
+       close IN;
+
+       # remove comments
+       $file =~ s,/\*.*?\*/,,sg;
+       $file =~ s,//[^\n]*,,sg;
+
+       my @lines = split /\n/, $file;
+
+       foreach (@lines) {
                if (m/struct\s+rc_map_table\s+(\w[\w\d_]+)/) {
                        flush($filename, $legacy);
 
@@ -140,7 +150,6 @@ sub parse_file($$)
                        }
                }
        }
-       close IN;
 
        flush($filename, $legacy);
 
-- 
2.21.0