Class: SSHKit::CommandMap

Inherits:
Object
  • Object
show all
Defined in:
lib/sshkit/command_map.rb

Defined Under Namespace

Classes: CommandHash, PrefixProvider

Constant Summary collapse

TO_VALUE =
->(obj) { obj.respond_to?(:call) ? obj.call : obj }

Instance Method Summary collapse

Constructor Details

#initialize(value = nil) ⇒ CommandMap


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# File 'lib/sshkit/command_map.rb', line 36

def initialize(value = nil)
  @map = CommandHash.new(value || defaults)
end

Instance Method Details

#[](command) ⇒ Object


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# File 'lib/sshkit/command_map.rb', line 40

def [](command)
  if prefix[command].any?
    prefixes = prefix[command].map(&TO_VALUE)
    prefixes = prefixes.join(" ")

    "#{prefixes} #{command}"
  else
    TO_VALUE.(@map[command])
  end
end

#[]=(command, new_command) ⇒ Object


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# File 'lib/sshkit/command_map.rb', line 55

def []=(command, new_command)
  @map[command] = new_command
end

#clearObject


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# File 'lib/sshkit/command_map.rb', line 59

def clear
  @map = CommandHash.new(defaults)
end

#defaultsObject


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# File 'lib/sshkit/command_map.rb', line 63

def defaults
  Hash.new do |hash, command|
    if %w{if test time exec}.include? command.to_s
      hash[command] = command.to_s
    else
      hash[command] = "/usr/bin/env #{command}"
    end
  end
end

#prefixObject


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# File 'lib/sshkit/command_map.rb', line 51

def prefix
  @prefix ||= PrefixProvider.new
end