Class: Melon::Commands::Remove

Inherits:
Base
  • Object
show all
Defined in:
lib/melon/commands/remove.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, #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/remove.rb', line 7

def self.description
  "Remove a file from the database"
end

Instance Method Details

#helptext ⇒ Object 



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# File 'lib/melon/commands/remove.rb', line 11

def helptext
  "For each argument, the database is checked for the path of that\nargument.  If present, it is removed.  If not, the database is\nchecked for the hash of the argument.  Once again, the record\nin the database is removed if found.\n\n If a file is found, the path that was in the database is printed.\n"
end

#parser_options(parser) ⇒ Object 



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# File 'lib/melon/commands/remove.rb', line 26

def parser_options(parser)
  CommonOptions.recursive(parser, options)
end

#run ⇒ Object 



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# File 'lib/melon/commands/remove.rb', line 30

def run
  parse_options!

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

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

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

      if options.database[:by_path][filename]
        hash = options.database[:by_path].delete(filename)
        options.database[:by_hash].delete(hash)
        puts filename
      else
        hash = Hasher.digest(filename)
        if options.database[:by_hash][hash]
          filename = options.database[:by_hash].delete(hash)
          options.database[:by_path].delete(filename)
          puts filename
        else
          error("untracked file: #{arg}")
        end
      end
    end
  end
end

#usageargs ⇒ Object 



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# File 'lib/melon/commands/remove.rb', line 22

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