Class: Exa::ShellCommand

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

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(title:, args:) ⇒ ShellCommand

Returns a new instance of ShellCommand.



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

def initialize(title:,args:)
  @title = title
  @args = args
end

Class Method Details

.extract(string) ⇒ Object 



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# File 'lib/exa/shell.rb', line 39

def self.extract(string)
  tokens = string.split(' ')
  # p [ :extract, tokens: tokens ]
  cmd,*args = *tokens
  # p [ :extract, cmd: cmd, args: args ]
  new(title: cmd, args: args)
end

Instance Method Details

#evaluate(shell) ⇒ Object 



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# File 'lib/exa/shell.rb', line 15

def evaluate(shell)
  case @title
  when "ls" then
    if shell.pwd.children.any?
      shell.print_collection shell.pwd.children.map(&:name)
    else
      shell.print_warning "(no children of #{shell.pwd.path})"
    end
  when "cd" then
    target = Exa.expand(@args.first)
    if target && !target.empty?
      shell.change_directory target.first
    else
      shell.print_warning "Invalid path for cd: #{@args.first}"
    end
  when "mkdir" then
    target = Exa.recall(@args.first)
  when "pwd" then
    shell.print_info shell.pwd.path
  else
    shell.print_warning "Unknown command: '#@title'"
  end
end