openwrt/scripts/timestamp.pl

   1 #!/usr/bin/perl
   2 use strict;
   3 use File::stat;
   4
   5 sub crawl($$) {
   6         my $path = shift;
   7         my $options = shift;
   8         my @results = $path;
   9         opendir(DIR,$path);
  10         foreach my $file (readdir(DIR)) {
  11                 if ($file !~m/^(\.(svn|\.?)|CVS$options)$/) {
  12                         push @results, crawl("$path/$file",$options);
  13                 }
  14         }
  15         closedir(DIR);
  16         return @results;
  17 }
  18
  19 sub get_ts($$) {
  20         my $path = shift;
  21         my $options = shift;
  22         my $ts = 0;
  23         my $fn = "";
  24         my @search = crawl($path,$options);
  25         while (@search) {
  26                 my $file = shift @search;
  27                 my $mtime = stat($file)->mtime;
  28                 if ($mtime > $ts) {
  29                         $ts = $mtime;
  30                         $fn = $file;
  31                 }
  32         }
  33         return ($ts, $fn);
  34 }
  35
  36 (@ARGV > 0) or push @ARGV, ".";
  37 my $ts = 0;
  38 my $n = ".";
  39 my %options;
  40 while (@ARGV > 0) {
  41         my $path = shift @ARGV;
  42         if ($path =~ /^-x/) {
  43                 my $str = shift @ARGV;
  44                 $options{"-x"} .= "|".$str;
  45         } elsif ($path =~ /^-/) {
  46                 $options{$path} = 1;
  47         } else {
  48                 my ($tmp, $fname) = get_ts($path, $options{"-x"});
  49                 if ($tmp > $ts) {
  50                         if ($options{'-f'}) {
  51                                 $n = $fname;
  52                         } else {
  53                                 $n = $path;
  54                         }
  55                         $ts = $tmp;
  56                 }
  57         }
  58 }
  59
  60 if ($options{"-p"}) {
  61         print "$n\n";
  62 } elsif ($options{"-t"}) {
  63         print "$ts\n";
  64 } else {
  65         print "$n\t$ts\n";
  66 }