Class: NeoBundle::Vimscript

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

Constant Summary collapse

MARK = 
'[neobundle-cmd/vim-script/command-part]'

Instance Method Summary collapse

Constructor Details

#initialize(config = {}) ⇒ Vimscript

Returns a new instance of Vimscript.



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# File 'lib/neobundle/vimscript.rb', line 7

def initialize(config={})
  @config = {
    vim: 'vim',
    vimrc: 'NONE',
  }
  @config.merge!(config)
  begin
    result = %x[#{'%{vim} --version' % self.escaped_config}]
    unless result =~ /^VIM - Vi IMproved / and $? == 0 then
      raise NeoBundle::VimCommandError, 'command is not vim!' 
    end
  rescue SystemCallError 
    raise NeoBundle::VimCommandError, 'vim command not found!'
  end
end

Instance Method Details

#exec(cmd, io = nil) ⇒ Object

Raises:



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# File 'lib/neobundle/vimscript.rb', line 23

def exec(cmd, io=nil)
  raise NeoBundle::VimscriptError, 'Command is empty!' if cmd.to_s.strip.empty?
  command = (<<-SH % self.escaped_config).gsub(/\s+/,' ').strip
    %{vim} -u %{vimrc} -U NONE -i NONE -e -s -V1
      -c "
        try |
          echo '#{MARK}' |
          #{cmd} |
          echo '#{MARK}' |
          echo '' |
        finally |
          q! |
        endtry
      "
      -c "
        echo '#{MARK}' |
        echo '' |
        q
      "
  SH
  r,w = IO.pipe
  process = Process.detach spawn(command, out: w, err: w)
  
  Thread.new do
    process.join
    r.close
    w.close
  end
  
  begin
    result = []
    is_outputting = false
    
    loop do
      line = r.gets.rstrip
      if line == MARK then
        is_outputting = !is_outputting
      elsif is_outputting then
        io.puts line unless io.nil?
        result.push line
      end
    end
  rescue IOError
    result = result.join("\n")
    raise NeoBundle::VimscriptError, result if process.value != 0
    result
  end
end