From 88e2659c6dcc28683a848a301650ed517d2b7185 Mon Sep 17 00:00:00 2001
From: Mahesh Asolkar <mahesh@mahesha.com>
Date: Mon, 25 Feb 2013 15:06:08 -0800
Subject: [PATCH] Added replacement tags in headers + Misc updates

---
 licapp.pl                 | 75 +++++++++++++++++++++++++++++++++++++--
 licenses/apache_v2.header |  2 +-
 licenses/gpl_v3.header    |  4 +--
 licenses/mit.header       |  2 +-
 4 files changed, 76 insertions(+), 7 deletions(-)

diff --git a/licapp.pl b/licapp.pl
index 1100c25..322de49 100755
--- a/licapp.pl
+++ b/licapp.pl
@@ -3,6 +3,7 @@
 use strict;
 use warnings;
 use File::Find;
+use File::Basename;
 use FileHandle;
 use Data::Dumper;
 use Getopt::Long;
@@ -14,24 +15,92 @@ my $app = {};
 # Defaults
 $app->{'options'}->{'directory'} = getcwd;
 $app->{'options'}->{'license'} = 'mit';
+$app->{'options'}->{'user'} = $ENV{'USER'};
+$app->{'options'}->{'date'} = (localtime(time))[5] + 1900;
+$app->{'options'}->{'about'} = "This is an open-source software";
+$app->{'state'}->{'license_stub'} = "NON EXISTANT";
+$app->{'state'}->{'app_dir'} = dirname($0);
 
 # Command line options
 my $correct_usage = GetOptions (
-  'directory=s' => \$app->{'options'}->{'directory'},
-  'license=s' => \$app->{'options'}->{'license'});
+    'directory=s' => \$app->{'options'}->{'directory'},
+    'license=s' => \$app->{'options'}->{'license'},
+    'about=s' => \$app->{'options'}->{'about'},
+    'user=s' => \$app->{'options'}->{'user'},
+    'date=s' => \$app->{'options'}->{'date'},
+  );
 
 setup_license_pretty_names($app);
 setup_filetype_comment_mapping($app);
+setup_license_stub($app);
 
 print "Applying '"
       . $app->{'license_pretty_names'}->{$app->{'options'}->{'license'}}
       . "' license to files in '"
       . $app->{'options'}->{'directory'}
-      ."' directory\n";
+      . "' directory\n\n";
+
+print "Copyright: Copyright (C) "
+      . $app->{'options'}->{'date'}
+      . " " . $app->{'options'}->{'user'}
+      . "\n\n";
+
+print "About: " . $app->{'options'}->{'about'}
+      . "\n\n";
+
+print "Stub:\n-----\n$app->{'state'}->{'license_stub'}\n-----\n";
+
+find (sub {
+    find_files($app, ${File::Find::name}, $_)
+  }, $app->{'options'}->{'directory'});
 
 #
 # Subroutines
 #
+sub find_files {
+  my ($app, $file, $name) = @_;
+
+  #
+  # Opportunity to filter any file types befrore any processing starts
+  #
+  handle_files ($app, $file, $name);
+}
+
+sub handle_files {
+  my ($app, $file, $name) = @_;
+
+  my $rh = new FileHandle ($name);
+  my @contents = <$rh>;
+
+  print "Handling... $file\n";
+
+  if ((defined $contents[0]) && ($contents[0] =~ /^\s*#!/)) {
+    print "   ... has #! line\n";
+  }
+}
+
+sub setup_license_stub {
+  my ($app) = @_;
+  my $header_file = $app->{'state'}->{'app_dir'}
+                    ."/licenses/"
+                    . $app->{'options'}->{'license'} . ".header";
+
+  if (-e $header_file) {
+    my $rh = new FileHandle ($header_file);
+    $app->{'state'}->{'license_stub'} = do {local $/; <$rh>};
+
+    $app->{'state'}->{'license_stub'} =~
+      s/###DESCRIPTION###/$app->{'options'}->{'about'}/;
+    $app->{'state'}->{'license_stub'} =~
+      s/###DATE###/$app->{'options'}->{'date'}/;
+    $app->{'state'}->{'license_stub'} =~
+      s/###NAME###/$app->{'options'}->{'user'}/;
+  }
+  else {
+    warn "[WARN] License Header '$header_file' does not exist";
+  }
+}
+
 sub setup_license_pretty_names {
   my ($app) = @_;
 
diff --git a/licenses/apache_v2.header b/licenses/apache_v2.header
index 004c62e..2c7a9d0 100644
--- a/licenses/apache_v2.header
+++ b/licenses/apache_v2.header
@@ -1,4 +1,4 @@
-Copyright [yyyy] [name of copyright owner]
+Copyright ###DATE### ###NAME###
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/licenses/gpl_v3.header b/licenses/gpl_v3.header
index 55a3551..f10fa9f 100644
--- a/licenses/gpl_v3.header
+++ b/licenses/gpl_v3.header
@@ -1,5 +1,5 @@
-<one line to give the program's name and a brief idea of what it does.>
-Copyright (C) <year>  <name of author>
+###DESCRIPTION###
+Copyright (C) ###DATE### ###NAME###
 
 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
diff --git a/licenses/mit.header b/licenses/mit.header
index 78dba97..d6aeac1 100644
--- a/licenses/mit.header
+++ b/licenses/mit.header
@@ -1,4 +1,4 @@
-Copyright (c) <year> <copyright holders>
+Copyright (c) ###DATE### ###NAME###
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in