Class: Megar::Shell

Inherits:
Object
  • Object
show all
Defined in:
lib/megar/shell.rb

Overview

class that groks the megar command line options and invokes the required task

Constant Summary collapse

OPTIONS =

defines the valid command line options

%w(help verbose email=s password=s)

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options, args) ⇒ Shell

initializes the shell with command line argments:

options is expected to be the hash structure as provided by GetOptions.new(..)

args is the remaining command line arguments



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# File 'lib/megar/shell.rb', line 18

def initialize(options,args)
  @options = (options||{}).each{|k,v| {k => v} }
  @args = args
end

Instance Attribute Details

#args ⇒ Object (readonly)

holds the remaining command line arguments



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# File 'lib/megar/shell.rb', line 10

def args
  @args
end

#options ⇒ Object (readonly)

holds the parsed options



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# File 'lib/megar/shell.rb', line 7

def options
  @options
end

Class Method Details

.usage ⇒ Object

prints usage/help information



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# File 'lib/megar/shell.rb', line 49

def usage
  $stderr.puts <<-EOS

Megar v#{Megar::VERSION}
===================================

Usage:
  megar [options] [commands]

Options:
  -h  | --help           : shows command help
  -v  | --verbose        : run with verbose
  -e= | --email=value    : email address for login
  -p= | --password=value : password for login

Commands:
  (none)                 : will perform a basic connection test only
  ls                     : returns a full file listing
  get file_id            : downloads the file with id file_id
  put file_name          : uploads the file called "file_name"

Examples:
  megar [email protected] --password=MyPassword ls
  megar -e [email protected] -p MyPassword ls
  megar -e [email protected] -p MyPassword get 74ZTXbyR
  megar -e [email protected] -p MyPassword put ../path/to/my_file.png

EOS
end

Instance Method Details

#email ⇒ Object

Option shortcuts



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# File 'lib/megar/shell.rb', line 117

def email    ; options[:email]    ; end

#get(file_id) ⇒ Object

download file with file_id



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# File 'lib/megar/shell.rb', line 93

def get(file_id)
  if file = session.files.find_by_id(file_id)
    $stderr.puts "Downloading #{file_id} to #{file.name}.."
    File.open(file.name,'wb') do |f|
      f.write file.body
    end
  else
    $stderr.puts "I couldn't find the file with ID #{file_id}"
  end
end

#ls ⇒ Object

do file listing



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# File 'lib/megar/shell.rb', line 86

def ls
  session.files.each do |file|
    puts file
  end
end

#password ⇒ Object 



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# File 'lib/megar/shell.rb', line 118

def password ; options[:password] ; end

#put(filenames) ⇒ Object

upload file(s) filenames



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# File 'lib/megar/shell.rb', line 105

def put(filenames)
  Array(filenames).each do |filename|
    $stderr.puts "Uploading #{filename}.."
    session.files.create(body: filename)
  end
end

#run ⇒ Object

Command: execute the megar task according to the options provided on initialisation



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# File 'lib/megar/shell.rb', line 24

def run
  if email && password
    $stderr.puts "Connecting to mega as #{email}.."
    raise "Failed to connect!" unless session.connected?
    case args.first
    when /ls/i
      ls
    when /get/i
      get(args[1])
    when /put/i
      put(args.drop(1))
    else
      $stderr.puts "Connected!"
    end
  else
    usage
  end
end

#session ⇒ Object 



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# File 'lib/megar/shell.rb', line 112

def session
  @session ||= Megar::Session.new(email: email, password: password)
end

#usage ⇒ Object

prints usage/help information



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# File 'lib/megar/shell.rb', line 81

def usage
  self.class.usage
end