Class: Thor::Tasks::Merb::Gem

Inherits:
Thor
  • Object
show all
Defined in:
lib/generators/templates/application/common/merb_thor/ops.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.begin_trans ⇒ Object 



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# File 'lib/generators/templates/application/common/merb_thor/ops.rb', line 52

def self.begin_trans
  note "Beginning transaction"
  FileUtils.cp_r(Dir.pwd / "gems", Dir.pwd / ".original_gems")
end

.commit_trans ⇒ Object 



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# File 'lib/generators/templates/application/common/merb_thor/ops.rb', line 57

def self.commit_trans
  note "Committing transaction"
  FileUtils.rm_rf(Dir.pwd / ".original_gems")
end

.rollback_trans ⇒ Object 



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# File 'lib/generators/templates/application/common/merb_thor/ops.rb', line 62

def self.rollback_trans
  if File.exist?(Dir.pwd / ".original_gems")
    note "Rolling back transaction"
    FileUtils.rm_rf(Dir.pwd / "gems")
    FileUtils.mv(Dir.pwd / ".original_gems", Dir.pwd / "gems")
  end
  exit!
end

Instance Method Details

#full_list ⇒ Object 



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# File 'lib/generators/templates/application/common/merb_thor/ops.rb', line 23

def full_list
  @idx.load_gems_in("gems/specifications")

  @list.map do |name, versions|
    dep = ::Gem::Dependency.new(name, versions)
    spec = @idx.search(dep).last
    unless spec
      self.class.error "A required dependency #{dep} was not found"
      self.class.rollback_trans
    end
    deps = spec.recursive_dependencies(dep, @idx)
    [spec] + deps
  end.flatten.uniq
end

#rescue_failures(error = StandardError, prc = nil) ⇒ Object 



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# File 'lib/generators/templates/application/common/merb_thor/ops.rb', line 38

def rescue_failures(error = StandardError, prc = nil)
  begin
    yield
  rescue error => e
    if prc
      prc.call(e)
    else
      puts e.message
      puts e.backtrace
    end
    self.class.rollback_trans
  end
end