Class: Mygen::Generator

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

Direct Known Subclasses

Plugins::MygenGenerator

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Naming

#camel_case, #cc_name, #d_name, #dash_case, #method_name, #no_case, #s_name, #snake_case

Constructor Details

#initialize ⇒ Generator

Returns a new instance of Generator.



9
10
11
 
# File 'lib/mygen/generator.rb', line 9

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.



7
8
9
 
# File 'lib/mygen/generator.rb', line 7

def dest_dir
  @dest_dir
end

#dry_run ⇒ Object

Returns the value of attribute dry_run.



7
8
9
 
# File 'lib/mygen/generator.rb', line 7

def dry_run
  @dry_run
end

#name ⇒ Object

Returns the value of attribute name.



7
8
9
 
# File 'lib/mygen/generator.rb', line 7

def name
  @name
end

#options ⇒ Object

Returns the value of attribute options.



7
8
9
 
# File 'lib/mygen/generator.rb', line 7

def options
  @options
end

#template_source_dir ⇒ Object

Returns the value of attribute template_source_dir.



7
8
9
 
# File 'lib/mygen/generator.rb', line 7

def template_source_dir
  @template_source_dir
end

Class Method Details

.descendants ⇒ Object 



13
14
15
 
# File 'lib/mygen/generator.rb', line 13

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

Instance Method Details

#description ⇒ Object 



17
18
19
 
# File 'lib/mygen/generator.rb', line 17

def description
  "Plugin has no description"
end

#file_destination(file, bindings) ⇒ Object 



113
114
115
116
117
 
# File 'lib/mygen/generator.rb', line 113

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 



25
26
27
 
# File 'lib/mygen/generator.rb', line 25

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

#generator_name ⇒ Object 



21
22
23
 
# File 'lib/mygen/generator.rb', line 21

def generator_name
  snake_case(self.class.name)
end

#internal_template_files ⇒ Object 



37
38
39
 
# File 'lib/mygen/generator.rb', line 37

def internal_template_files
  template_files(internal_template_source_dir)
end

#internal_template_source_dir ⇒ Object 



41
42
43
 
# File 'lib/mygen/generator.rb', line 41

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

#make_template_tree(internal = false) ⇒ Object 



52
53
54
55
56
 
# File 'lib/mygen/generator.rb', line 52

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

#make_template_tree_in_current_dir ⇒ Object 



45
46
47
48
49
50
 
# File 'lib/mygen/generator.rb', line 45

def make_template_tree_in_current_dir
  fileutils.mkdir_p(dest_dir) unless File.exist?(dest_dir)
  files = Dir.glob(File.join(template_source_dir, "/*"))
  puts "files: #{files}"
  fileutils.cp_r(files, dest_dir)
end

#move_file_in_place(src, dest) ⇒ Object 



92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
 
# File 'lib/mygen/generator.rb', line 92

def move_file_in_place(src, dest)
  sf = File.absolute_path(src)
  df = File.absolute_path(dest)
  file_exist = File.exist?(df)
  fileutils.mv(sf, df) if sf != df && !file_exist

  if file_exist && sf != df
    Dir.glob(File.join(sf, "/*")).each do |f|
      next if f == sf
      file = f.sub(sf, '')
      fileutils.mv(f, File.join(df, file))
    end
    fileutils.rm_rf(sf)
  end
end

#parent_dirs_dont_exist?(path) ⇒ Boolean

Returns:

  • (Boolean) 


80
81
82
83
84
 
# File 'lib/mygen/generator.rb', line 80

def parent_dirs_dont_exist?(path)
  parent_dir = File.expand_path("..", path)
  return false if path.include?('__')
  return !File.exist?(path)
end

#parse(file, bindings) ⇒ Object 



86
87
88
89
90
 
# File 'lib/mygen/generator.rb', line 86

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 



108
109
110
111
 
# File 'lib/mygen/generator.rb', line 108

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.



62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
 
# File 'lib/mygen/generator.rb', line 62

def parse_templates(bindings)
  template_dirs(File.join(dest_dir)).each do |dir|
    dest = file_destination(dir, bindings)
    parent_dir = File.expand_path("..", dest)
    fileutils.mkdir_p(parent_dir) if parent_dirs_dont_exist?(dest)
    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 



33
34
35
 
# File 'lib/mygen/generator.rb', line 33

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 



29
30
31
 
# File 'lib/mygen/generator.rb', line 29

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