scripts/cleanup-trace-events.pl

   1 #!/usr/bin/perl
   2 # Copyright (C) 2013 Red Hat, Inc.
   3 #
   4 # Authors:
   5 #  Markus Armbruster <armbru@redhat.com>
   6 #
   7 # This work is licensed under the terms of the GNU GPL, version 2 or
   8 # later.  See the COPYING file in the top-level directory.
   9
  10 # Usage: cleanup-trace-events.pl trace-events
  11 #
  12 # Print cleaned up trace-events to standard output.
  13
  14 use warnings;
  15 use strict;
  16
  17 my $buf = '';
  18 my %seen = ();
  19
  20 sub out {
  21     print $buf;
  22     $buf = '';
  23     %seen = ();
  24 }
  25
  26 while (<>) {
  27     if (/^(disable )?([a-z_0-9]+)\(/) {
  28         open GREP, '-|', 'git', 'grep', '-l', "trace_$2"
  29             or die "run git grep: $!";
  30         my $fname;
  31         while ($fname = <GREP>) {
  32             chomp $fname;
  33             next if $seen{$fname} || $fname eq 'trace-events';
  34             $seen{$fname} = 1;
  35             $buf = "# $fname\n" . $buf;
  36         }
  37         unless (close GREP) {
  38             die "close git grep: $!"
  39                 if $!;
  40             next;
  41         }
  42     } elsif (/^# ([^ ]*\.[ch])$/) {
  43         out;
  44         next;
  45     } elsif (!/^#|^$/) {
  46         warn "unintelligible line";
  47     }
  48     $buf .= $_;
  49 }
  50
  51 out;