Class: Melon::Commands::Add

Inherits:
Base
  • Object
show all
Defined in:
lib/melon/commands/add.rb

Instance Attribute Summary

Attributes inherited from Base

#args, #description, #options

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

command_name, #helptext, #initialize, #parse_options!, #parser, #usagebanner, #verify_args

Methods included from Helpers

#blockquote, #error, #expand_dir, #format_command, #recursively_expand, #resolve_symlinks, #wrap_text

Constructor Details

This class inherits a constructor from Melon::Commands::Base

Class Method Details

.description ⇒ Object 



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# File 'lib/melon/commands/add.rb', line 8

def self.description
  "Add files to the melon database"
end

Instance Method Details

#parser_options(parser) ⇒ Object 



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# File 'lib/melon/commands/add.rb', line 12

def parser_options(parser)
  parser.on("-q", "--quiet", "Suppress printing of hash and path") do
    options.quiet = true
  end

  CommonOptions.recursive(parser, options)

  parser.on("-u", "--update", 
            "Skip paths already present in the database") do
    options.update = true
  end

  CommonOptions.preserve_symlinks(parser, options)
end

#run ⇒ Object 



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# File 'lib/melon/commands/add.rb', line 31

def run
  parse_options!

  if options.recursive
    self.args = recursively_expand(args)
  end

  args.each do |arg|
    options.database.transaction do
      filename = File.expand_path(arg)
      filename = resolve_symlinks(filename) unless options.preserve_symlinks

      if File.directory?(filename)
        error "argument is a directory: #{arg}"
      end

      if options.database[:by_path][filename]
        next if options.update
        error "path already present in database: #{arg}"
      end

      # hash strategy should be encapsulated, ergo indirection here
      hash = Hasher.digest(filename)

      if options.database[:by_hash][hash]
        error "file exists elsewhere in the database: #{arg}"
      end


      options.database[:by_hash][hash] = filename
      options.database[:by_path][filename] = hash
      puts "#{hash}:#{filename}" unless options.quiet
    end
  end
end

#usageargs ⇒ Object 



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# File 'lib/melon/commands/add.rb', line 27

def usageargs
  "FILE [FILE [FILE ...]]"
end