Module: Hairballs::LibraryHelpers

Included in:
Plugin, Theme
Defined in:
lib/hairballs/library_helpers.rb

Overview

Helpers specifying and requiring dependencies for Themes and Plugins.

Instance Method Summary collapse

Instance Method Details

#do_bundler_extending ⇒ Object

Add all gems in the global gemset to the $LOAD_PATH so they can be used even in places like ‘rails console’.

TODO: Use #find_latest_gem for each of #libraries.



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# File 'lib/hairballs/library_helpers.rb', line 51

def do_bundler_extending
  vputs "[**:#{@name}] #do_bundler_extending: #{@libraries}"

  if defined?(::Bundler)
    vputs "[**:#{@name}] #do_bundler_extending: Libraries: #{@libraries}"

    all_global_gem_paths = Dir.glob("#{Gem.dir}/gems/*")

    all_global_gem_paths.each do |p|
      next unless @libraries.any? { |l| p.include?(l) }
      gem_path = "#{p}/lib"
      # rubocop:disable Metrics/LineLength
      vputs "[**:#{@name}] #do_bundler_extending: Adding to $LOAD_PATH: #{gem_path}"
      # rubocop:enable
      $LOAD_PATH.unshift(gem_path)
    end
  else
    vputs %([**:#{@name}] #do_bundler_extending: Bundler not defined. Skipping.)
  end
end

#find_latest_gem(gem_name) ⇒ String

Path to the highest version of the gem with the given gem.

Parameters:

  • gem_name (String)

Returns:

  • (String) —

    The path to the latest install of gem_name.



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# File 'lib/hairballs/library_helpers.rb', line 41

def find_latest_gem(gem_name)
  the_gem = Dir.glob("#{Gem.dir}/gems/#{gem_name}-*")

  the_gem.empty? ? nil : the_gem.sort.last
end

#libraries(libs = nil) ⇒ Object

Parameters:

  • libs (Array<String>) (defaults to: nil) 


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# File 'lib/hairballs/library_helpers.rb', line 9

def libraries(libs=nil)
  return @libraries if @libraries && libs.nil?

  @libraries = libs ? libs : yield([])
end

#require_libraries ⇒ Object

Requires #libraries on load. If they’re not installed, install them. If it can’t be installed, move on to the next.



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# File 'lib/hairballs/library_helpers.rb', line 17

def require_libraries
  return if @libraries.nil?

  missing_dependencies = []

  @libraries.each do |lib|
    begin
      vrequire(lib)
    rescue LoadError
      # rubocop:disable Metrics/LineLength
      vputs "[**:#{@name}](#{lib}) Unable to require; adding to install list..."
      # rubocop:enable Metrics/LineLength
      missing_dependencies << lib
    end
  end

  requirer = new_dependency_requirer(dependency_installer)
  install_missing_dependencies(missing_dependencies, requirer).resume
end

#undo_bundler_extending ⇒ Object

Undo the stuff that was done in #do_bundler_extending.

TODO: Use #find_latest_gem for each of #libraries.



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# File 'lib/hairballs/library_helpers.rb', line 75

def undo_bundler_extending
  if defined?(::Bundler)
    all_global_gem_paths = Dir.glob("#{Gem.dir}/gems/*")

    all_global_gem_paths.each do |p|
      gem_path = "#{p}/lib"
      $LOAD_PATH.delete(gem_path)
    end
  else
    vputs %([**:#{@name}] Bundler not defined.  Skipping.)
  end
end