scripts/begin-end-check.pl

   1 #!/usr/bin/perl
   2
   3 use strict;
   4 use warnings;
   5
   6 # Check __BEGIN_NAMESPACE ... __END_NAMESPACE pairing in an include file.
   7
   8 my $code = 0;
   9 for my $path (@ARGV) {
  10     my $localcode = 0;
  11     my @stack;
  12
  13     open my $in, '<', $path
  14         or die "open $path failed: $!";
  15
  16     while (<$in>) {
  17         if ( /^\s*__BEGIN_(.*)\b/ ) {
  18             push @stack, $1;
  19         }
  20         elsif ( /^\s*__END_(.*)\b/ ) {
  21             if (@stack) {
  22                 my $tag = pop @stack;
  23                 if ($1 ne $tag) {
  24                     print "$path:$.: BEGIN $tag paired with END $1\n";
  25                     $localcode = 1;
  26                 }
  27             }
  28             else {
  29                 print "$path:$.: END $1 does not match a begin\n";
  30                 $localcode = 1;
  31             }
  32         }
  33     }
  34
  35     if (@stack) {
  36         print "$path: Unmatched begin tags " . join (' ', @stack) ."\n";
  37         $localcode = 1;
  38     }
  39
  40     if ($localcode == 0) {
  41         print "$path: OK\n";
  42     } else {
  43         $code = $localcode;
  44     }
  45 }
  46
  47 exit $code;