Add help/list options.

1 files changed, 59 insertions, 0 deletions

diff --git a/omptagger b/omptagger
index 2cd07d7..d603ee8 100755
--- a/omptagger
+++ b/omptagger
@@ -10,6 +10,59 @@
 
 require 'getoptlong'
 
+def help
+  puts <<-end
+Usage: omptagger [options] [files]
+
+Options:
+  --view        -v  View all tags
+  --view-tag    -t  View a tag
+  --set-tag     -s  Set a tag
+  --remove      -r  Remove all tags
+  --remove-tag  -d  Remove a tag
+  --generate    -g  Generate tags based on filename
+  --rename      -m  Generate filename based on tags
+  --scheme      -n  Specify a file naming scheme
+  --pretend     -p  Do not make any actual changes
+  --list        -l  Display list of available tags
+  --help        -h  Display help information
+
+Notes:
+  * The default file naming scheme is Artist - Title.
+  * Schemes must be specified prior to actions that use them.
+  end
+
+  exit
+end
+
+def list
+  puts <<-end
+┌────────────────────────┐
+│ Keys   Vorbis Comments │
+├────────────────────────┤
+│ %a     Artist          │
+│ %b     Album           │
+│ %d     Date            │
+│ %n     TrackNumber     │
+│ %t     Title           │
+│ %*     Wildcard        │
+├────────────────────────┤
+│        Contact         │
+│        Copyright       │
+│        Description     │
+│        Genre           │
+│        ISRC            │
+│        License         │
+│        Location        │
+│        Organization    │
+│        Performer       │
+│        Version         │
+└────────────────────────┘
+  end
+
+  exit
+end
+
 actions = Array.new
 options = Array.new
 scheme  = '%a - %t'
@@ -42,3 +95,9 @@ GetoptLong.new(
     actions << option
   end
 end
+
+help if options.include?(:help)
+list if options.include?(:list)
+help if actions.empty?
+
+puts 'No files specified.' if ARGV.empty?