Module: SchemaDev::Gemfiles

Extended by:
Gemfiles
Included in:
Gemfiles
Defined in:
lib/schema_dev/gemfiles.rb

Constant Summary collapse

TEMPLATES_ROOT = 
Pathname.new(__FILE__).dirname.parent.parent + "templates"

Instance Method Summary collapse

Instance Method Details

#_blow_away(relpath) ⇒ Object 



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# File 'lib/schema_dev/gemfiles.rb', line 50

def _blow_away(relpath)
  (@dst_root + relpath).rmtree
rescue Errno::ENOENT
end

#_copy(relpath, filename) ⇒ Object 



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# File 'lib/schema_dev/gemfiles.rb', line 41

def _copy(relpath, filename)
  srcfile = @src_root + relpath + filename
  dstfile = @dst_root + relpath + filename
  return unless srcfile.exist?

  dstfile.dirname.mkpath
  FileUtils.copy_file(srcfile, dstfile)
end

#build(config) ⇒ Object 



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# File 'lib/schema_dev/gemfiles.rb', line 10

def build(config)
  Dir.mktmpdir do |tmpdir|
    @src_root = TEMPLATES_ROOT
    @dst_root = Pathname.new(tmpdir).realpath

    relpath = Pathname.new("gemfiles")
    abspath = @dst_root + relpath
    target_abspath = Pathname.new(".").realpath + relpath

    _copy(relpath, 'Gemfile.base')

    config.rails.each do |rails|

      rails_path = relpath + "rails-#{rails}"
      _copy(rails_path, 'Gemfile.base')

      config.db.each do |db|
        _copy(rails_path, "Gemfile.#{db}")
      end
    end

    if `diff -rq #{abspath} gemfiles 2>&1 | grep -v lock`.length == 0
      return false
    end

    _blow_away(target_abspath)
    abspath.rename(target_abspath)
    return true
  end
end