#! perl -wl
#  Copyright 2012 Ken Takusagawa
#
#  This program is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, either version 3 of the License, or
#  (at your option) any later version.
#  
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program.  If not, see <http://www.gnu.org/licenses/>.

@a=('A'..'Z','a'..'z','0'..'9',' ','-','_');
for($count=0;$count<1;++$count){
    $attempts=0;
  SEARCH: {
      $attempts++;
      $_="";
      $length=int(rand 40);
      $length+=1;
      
      for($i=0;$i<$length;++$i){
          $_ .= $a[rand@a];
      }
      redo SEARCH if /^[ _-]/ or /[ _-]$/ or /[ _-][ _-]/ or /[A-Z].*[a-z].*[A-Z]/ or /[a-z].*[A-Z].*[a-z]/ or /[0-9].*[A-Za-z].*[0-9]/;
      redo SEARCH if $exists{$_};
      #redo SEARCH unless / /;
    }
    $exists{$_}=1;
    print $_; #,',',$attempts;
}
#for images, (dsc|img)(_|\d)\d{4}