Class: InteractiveEditor

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

Defined Under Namespace

Modules: Editors, Exec

Constant Summary collapse

VERSION = 
'0.0.7'

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(editor) ⇒ InteractiveEditor

Returns a new instance of InteractiveEditor.



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# File 'lib/interactive_editor.rb', line 16

def initialize(editor)
  @editor = editor.to_s
end

Instance Attribute Details

#editor ⇒ Object

Returns the value of attribute editor.



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# File 'lib/interactive_editor.rb', line 14

def editor
  @editor
end

Class Method Details

.edit(editor, self_, file = nil) ⇒ Object 



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# File 'lib/interactive_editor.rb', line 57

def self.edit(editor, self_, file=nil)
  #maybe serialise last file to disk, for recovery
  (IRB.conf[:interactive_editors] ||=
    Hash.new { |h,k| h[k] = InteractiveEditor.new(k) })[editor].edit(self_, file)
end

Instance Method Details

#edit(object, file = nil) ⇒ Object 



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# File 'lib/interactive_editor.rb', line 20

def edit(object, file=nil)
  object = object == TOPLEVEL_BINDING.eval('self') ? nil : object

  current_file = if file
    FileUtils.touch(file) unless File.exist?(file)
    File.new(file)
  else
    if @file && File.exist?(@file.path) && !object
      @file
    else
      Tempfile.new( object ? ["yobj_tempfile", ".yml"] : ["irb_tempfile", ".rb"] )
    end
  end

  if object
    File.open( current_file, 'w' ) { |f| f << object.to_yaml }
  else
    @file = current_file
    mtime = File.stat(@file.path).mtime
  end

  args = Shellwords.shellwords(@editor) #parse @editor as arguments could be complex
  args << current_file.path
  current_file.close rescue nil
  Exec.system(*args)

  if object
    File.exists?(current_file.path) ? YAML.load_file(current_file.path) : object
  elsif mtime < File.stat(@file.path).mtime
    execute
  end
end

#execute ⇒ Object 



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# File 'lib/interactive_editor.rb', line 53

def execute
  eval(IO.read(@file.path), TOPLEVEL_BINDING)
end