Class: Requirer

Inherits:
Object show all
Defined in:
lib/xiki/requirer.rb

Class Method Summary collapse

Class Method Details

.extract_gem_from_exception(txt) ⇒ Object 



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# File 'lib/xiki/requirer.rb', line 25

def self.extract_gem_from_exception txt
  txt = txt[/-- (.*)/, 1] || txt[/RubyGem (.*)/, 1] || txt[/Could not find (.+?) /, 1] || txt

  return nil if ! txt

  txt.sub!(/\(.+/, '')
  txt.strip
end

.require_classes(files) ⇒ Object 



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# File 'lib/xiki/requirer.rb', line 34

def self.require_classes files
  files.each do |l|
    begin
      require l
    rescue LoadError => e
      self.show "#{e.to_s}\n"
      gem_name = self.extract_gem_from_exception e.to_s
      self.show "Xiki requires the '#{gem_name}' gem.\n% gem install #{gem_name}\n\n"
    end
  end

end

.require_gem(name, options = {}) ⇒ Object 



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# File 'lib/xiki/requirer.rb', line 15

def self.require_gem name, options={}
  begin
    gem name
    require options[:name2] || name
  rescue Exception=>e
    self.show "Xiki #{options[:optional] ? 'optionally uses' : 'requires'} the '#{name}' gem.\n% gem install #{name}\n\n"
    raise e if options[:raise]
  end
end

.show(txt) ⇒ Object 



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# File 'lib/xiki/requirer.rb', line 4

def self.show txt
  if ! $el
    return if txt !~ /(^Xiki requires|exception:$)/
    return puts "#{txt}"
  end

  $el.switch_to_buffer "Issues Loading Xiki"
  $el.insert txt
  $el.bury_buffer unless $el.buffer_substring($el.point_min, $el.point_max) =~ /(^Xiki requires|exception:$)/
end