Class: Mygen::Generator

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

Direct Known Subclasses

Plugins::MygenGenerator

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Generator

Returns a new instance of Generator.



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# File 'lib/mygen/generator.rb', line 5

def initialize
  @template_source_dir = File.join(ENV['HOME'], ".mygen", "plugins", generator_name, "templates")
end

Instance Attribute Details

#dest_dir ⇒ Object

Returns the value of attribute dest_dir.



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# File 'lib/mygen/generator.rb', line 3

def dest_dir
  @dest_dir
end

#dry_run ⇒ Object

Returns the value of attribute dry_run.



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# File 'lib/mygen/generator.rb', line 3

def dry_run
  @dry_run
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/mygen/generator.rb', line 3

def name
  @name
end

#template_source_dir ⇒ Object

Returns the value of attribute template_source_dir.



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# File 'lib/mygen/generator.rb', line 3

def template_source_dir
  @template_source_dir
end

Class Method Details

.descendants ⇒ Object 



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# File 'lib/mygen/generator.rb', line 9

def self.descendants
  ObjectSpace.each_object(Class).select { |klass| klass < self }
end

Instance Method Details

#description ⇒ Object 



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# File 'lib/mygen/generator.rb', line 13

def description
  "Plugin has no description"
end

#file_destination(file, bindings) ⇒ Object 



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# File 'lib/mygen/generator.rb', line 89

def file_destination(file, bindings)
  # subtract template_source_dir from path, add dest_dir and substitute filenames
  new_file = file.gsub(template_source_dir, '')
  replaced_filename(new_file, bindings)
end

#fileutils ⇒ Object 



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# File 'lib/mygen/generator.rb', line 26

def fileutils
  dry_run ? FileUtils::DryRun : FileUtils::Verbose
end

#generator_name ⇒ Object 



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# File 'lib/mygen/generator.rb', line 17

def generator_name
  self.class.name.gsub(/::/, '/').
    gsub(/([A-Z]+)([A-Z][a-z])/,'\1_\2').
    gsub(/([a-z\d])([A-Z])/,'\1_\2').
    tr("-", "_").
    split('/').last.
    downcase
end

#internal_template_files ⇒ Object 



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# File 'lib/mygen/generator.rb', line 38

def internal_template_files
  template_files(internal_template_source_dir)
end

#internal_template_source_dir ⇒ Object 



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# File 'lib/mygen/generator.rb', line 42

def internal_template_source_dir
  File.join(Mygen.root, "templates", generator_name)
end

#make_template_tree(internal = false) ⇒ Object 



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# File 'lib/mygen/generator.rb', line 46

def make_template_tree(internal = false)
  @template_source_dir = internal_template_source_dir if internal
  fileutils.rm_rf(dest_dir) if File.exist?(dest_dir)
  fileutils.cp_r(template_source_dir, dest_dir)
end

#move_file_in_place(src, dest) ⇒ Object 



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# File 'lib/mygen/generator.rb', line 78

def move_file_in_place(src, dest)
  sf = File.absolute_path(src)
  df = File.absolute_path(dest)
  fileutils.mv(sf, df) unless sf == df
end

#parse(file, bindings) ⇒ Object 



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# File 'lib/mygen/generator.rb', line 72

def parse(file, bindings)
  erb = ERB.new(File.read(file))
  result = erb.result bindings
  File.open(file, "w") { |f| f.write(result) }
end

#parse_and_place_file(file, dest, bindings) ⇒ Object 



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# File 'lib/mygen/generator.rb', line 84

def parse_and_place_file(file, dest, bindings)
  erb = ERB.new(File.read(file))
  erb.result bindings
end

#parse_templates(bindings) ⇒ Object

rename directories that should be filtered, from __name files should be from the destination, so no dirs needs to be filtered and only files need to be processed.



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# File 'lib/mygen/generator.rb', line 56

def parse_templates(bindings)
  template_dirs(File.join(dest_dir)).each do |dir|
    dest = file_destination(dir, bindings)
    move_file_in_place(dir, dest)
  end
#      Filter files with erb
  template_files(File.join(dest_dir)).each do |file|
    dest = file_destination(file, bindings)
    # This is where you parse the erb files and fill in the contens
    if file.end_with? 'erb'
      parse(file, bindings)
    end
    move_file_in_place(file, dest)
  end
end

#template_dirs(path = template_source_dir) ⇒ Object 



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# File 'lib/mygen/generator.rb', line 34

def template_dirs(path = template_source_dir)
  Dir.glob(File.join(path, "**/*")).select { |f| File.directory? f }
end

#template_files(path = template_source_dir) ⇒ Object 



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# File 'lib/mygen/generator.rb', line 30

def template_files(path = template_source_dir)
  Dir.glob(File.join(path, "**/*")).select { |f| File.file? f }
end