support/extern-squish

   1 #!/usr/bin/perl
   2 # This script finds extraneous "extern" variables in the *.c files.
   3 # Run it from inside the main rsync directory.
   4
   5 use strict;
   6
   7 my @files = glob('*.c');
   8
   9 foreach my $fn (@files) {
  10     open(IN, '<', $fn) or die;
  11     undef $/; $_ = <IN>; $/ = "\n";
  12     close IN;
  13     my @externs = /^extern .*?([^[\s(*;&.]+)(?:\[.*?\])?;/mg;
  14     foreach my $find (@externs) {
  15         my @matches = /(?<!\sstruct )\b(\Q$find\E)\b/g;
  16         print $fn, ': ', $find, "\n" if @matches == 1;
  17     }
  18 }