Class: Oraora::Completion

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

Constant Summary collapse

TEMPLATES = 
{
    's'  => 'SELECT ',
    's*' => 'SELECT * FROM ',
    'c*' => 'SELECT COUNT(*) FROM ',
    'i'  => 'INSERT ',
    'u'  => 'UPDATE ',
    'd'  => 'DELETE ',
    'a'  => 'ALTER ',
    'c'  => 'CREATE ',
    'cr' => 'CREATE OR REPLACE '
}

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ Completion

Returns a new instance of Completion.



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# File 'lib/oraora/completion.rb', line 15

def initialize(app)
  @app = app
end

Instance Method Details

#comp_proc ⇒ Object 



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# File 'lib/oraora/completion.rb', line 19

def comp_proc
  Proc.new do |s|
    # Complete with template alone if matched
    if TEMPLATES[Readline.line_buffer.downcase]
      TEMPLATES[Readline.line_buffer.downcase]

    else
      # Complete for SQL keywords
      comp = App::SQL_KEYWORDS

      # Complete for current context
      if s !~ /[\.\/]/
        comp += @app.meta.find(@app.context).list rescue []
        context = @app.context.dup
        comp += @app.meta.find(context.up).list while context.level

      # Complete for input
      else
        context = @app.context.dup
        path = s.split(/(?<=[\.\/])/, -1)
        last = path.pop
        loop do
          comp_context = @app.context_for(context, path.join) rescue nil
          if comp_context
            comp += @app.meta.find(comp_context).list.collect { |n| path.join + n } rescue []
          end
          break if context.level == nil
          context.up
        end
      end

      comp.sort.uniq.grep(/^#{Regexp.escape(s)}/i)
    end
  end
end