Class: Redcar::FilterCommand::Evaluator

Inherits:
Object
  • Object
show all
Defined in:
lib/filter_command/evaluator.rb

Overview

The command parser and runner for FilterCommand

Class Method Summary collapse

Class Method Details

.evaluate(command, input, output) ⇒ Object

Command processing before execution. If successful, the given command is run.

Parameters:

  • command (String) —

    the command to run

  • input (String) —

    the selected input format

  • output (String) —

    the selected output format



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# File 'lib/filter_command/evaluator.rb', line 17

def self.evaluate(command,input,output)
  win = Redcar.app.focussed_window
  tab = win.focussed_notebook_tab
  original_command = command.clone
  if tab and tab.is_a?(Redcar::EditTab) and doc = tab.edit_view.document
    case input
    when "None" # do nothing
    when "Selection"
      if doc.selection?
        selection = doc.selected_text
      else
        selection = doc.get_line_without_end_of_line(doc.cursor_line)
      end
      command = pipe_text(selection, command)
    when "Document"
      command  = pipe_text(doc.get_all_text, command)
    when "Cursor Line"
      command  = pipe_text(doc.get_line_without_end_of_line(doc.cursor_line), command)
    when "Cursor Word"
      command  = pipe_text(doc.current_word, command)
    else
      raise "Unknown input type found: #{input}"
    end
    result  = FilterCommand::CommandParser.substitute_variables(doc,command)
    command = result['command']
    temp    = result['temp']
  elsif input != "None"
    tab_type_error input
    return
  end
  execute_command win, command, input, output
  if temp and File.exist?(temp)
    Redcar::Project::Manager.open_file(temp)
  end
  FilterCommand::History.update_commands original_command, input, output
end

.execute_command(window, command, input, output) ⇒ Object

The actual running of a command filter speedbar. If the current window has a project open, the process working directory will be the project directory.

Parameters:

  • window (Redcar::Window) —

    a Redcar window, generally the window containing the

  • command (String) —

    the command to be executed

  • input (String) —

    the selected input format



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# File 'lib/filter_command/evaluator.rb', line 60

def self.execute_command window, command, input, output
  if project = Project::Manager.in_window(window)
    command = set_path command, project.path
  end
  pid, io_input, io_output, io_error = IO.popen4(command)
  if error = io_error.read and error.empty?
    format_text(io_output.read, output)
  else
    Redcar::Application::Dialog.message_box(error, :type => :error)
  end
end

.format_text(text, format) ⇒ Object

Command post-processing.

Parameters:

  • text (String) —

    the text output of the the command process

  • output (String) —

    the selected output format



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# File 'lib/filter_command/evaluator.rb', line 75

def self.format_text text, format
  if format_class = OutputFormat.formats[format]
    format_class.new.format(text,format)
  else
    raise "Unknown output type found: #{format}"
  end
end

.input_types ⇒ Object

List of supported input types for command execution



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# File 'lib/filter_command/evaluator.rb', line 8

def self.input_types
  ['None','Selection','Document','Cursor Line','Cursor Word']
end

.set_path(command, path) ⇒ Object

Sets the working directory for a given command to a given path, and adds proper escaping (platform-specific).

Parameters:

  • command (String) —

    the command to be executed

  • path (String) —

    the desired running directory



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# File 'lib/filter_command/evaluator.rb', line 87

def self.set_path command, path
  case Redcar.platform
  when :osx, :linux
    command = "sh -c \"cd \\\"#{path}\\\" && #{command}\""
  when :windows
    command = "cd \"#{path.gsub('/', '\\')}\" & #{command}"
  end
  command
end