Class: Bibliothecary::Parsers::CRAN

Inherits:
Object
  • Object
show all
Defined in:
lib/bibliothecary/parsers/cran.rb

Constant Summary collapse

PLATFORM_NAME = 
'cran'
REQUIRE_REGEXP = 
/([a-zA-Z0-9\-_\.]+)\s?\(?([><=\s\d\.,]+)?\)?/

Class Method Summary collapse

Class Method Details

.analyse(folder_path, file_list) ⇒ Object 



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# File 'lib/bibliothecary/parsers/cran.rb', line 18

def self.analyse(folder_path, file_list)
  [analyse_description(folder_path, file_list)]
end

.analyse_description(folder_path, file_list) ⇒ Object 



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# File 'lib/bibliothecary/parsers/cran.rb', line 22

def self.analyse_description(folder_path, file_list)
  path = file_list.find{|path| path.gsub(folder_path, '').gsub(/^\//, '').match(/^DESCRIPTION$/i) }
  return unless path

  manifest = DebControl::ControlFileBase.parse File.open(path).read

  {
    platform: PLATFORM_NAME,
    path: path,
    dependencies: parse_description(manifest)
  }
end

.parse(filename, file_contents) ⇒ Object 



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# File 'lib/bibliothecary/parsers/cran.rb', line 9

def self.parse(filename, file_contents)
  if filename.match(/^DESCRIPTION$/i)
    control = DebControl::ControlFileBase.parse(file_contents)
    parse_description(control)
  else
    []
  end
end

.parse_description(manifest) ⇒ Object 



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# File 'lib/bibliothecary/parsers/cran.rb', line 35

def self.parse_description(manifest)
  parse_section(manifest, 'Depends') +
  parse_section(manifest, 'Imports') +
  parse_section(manifest, 'Suggests') +
  parse_section(manifest, 'Enhances')
end

.parse_section(manifest, name) ⇒ Object 



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# File 'lib/bibliothecary/parsers/cran.rb', line 42

def self.parse_section(manifest, name)
  deps = manifest.first[name].gsub("\n", '').split(',').map(&:strip)
  deps.map do |dependency|
    dep = dependency.match(REQUIRE_REGEXP)
    {
      name: dep[1],
      version: dep[2] || '*',
      type: name.downcase
    }
  end
end