Class: Temp::Copier

Inherits:
Object
  • Object
show all
Defined in:
lib/temp/copier.rb

Overview

A Copier object provides various functions for creating a project from a template. It can also be given a path to the directory where templates can be found.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Copier

Returns a new instance of Copier.



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# File 'lib/temp/copier.rb', line 12

def initialize(options = {})
  @options = options
  @template_dir = File.expand_path(options[:template_dir] || '~/.temp')
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/temp/copier.rb', line 10

def options
  @options
end

Instance Method Details

#create_project(project, template) ⇒ Object

Creates a new project with the given path from the given template name.



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# File 'lib/temp/copier.rb', line 18

def create_project(project, template)
  project = File.expand_path(project)
  template_path = File.expand_path(File.join(@template_dir, template))

  raise 'project already exists' if File.exist? project
  raise 'template does not exist' unless File.exist? template_path

  ignore = read_tempignore(template)
  files = find_files(template, ignore)

  FileUtils.mkdir(project)
  files.each do |file|
    p = File.join(project, file)
    t = File.join(template_path, file)

    if File.directory? t
      FileUtils.mkdir(p)
    else
      FileUtils.cp(t, p)
    end
  end
end

#find_files(template, ignore = []) ⇒ Object

Returns an array of all files in a template, optionally ignoring all files in ignore.



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# File 'lib/temp/copier.rb', line 43

def find_files(template, ignore = [])
  template = File.expand_path(File.join(@template_dir, template))
  Dir.glob(File.join(template, '**/*')).map do |file|
    file.sub(template + '/', '')
  end - ignore
end

#read_tempignore(template) ⇒ Object

Returns an array of files in a template to ignore.



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# File 'lib/temp/copier.rb', line 51

def read_tempignore(template)
  template = File.expand_path(File.join(@template_dir, template))
  tempignore = File.join(template, '.tempignore')
  files = ['.tempignore']

  if File.exist? tempignore
    files |= File.read(tempignore).split(?\n).map do |line|
      Dir.glob(File.join(template, line)).map do |file|
        file.sub(template + '/', '')
      end
    end.flatten
  end

  files
end