Модуль: OS::Linux::Ld Закрытый

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# File 'os/linux/ld.rb', line 81

def self.library_paths(conf_path = "ld.so.conf", brewed: true)
  conf_file = Pathname(sysconfdir(brewed:))/conf_path
  return [] unless conf_file.exist?
  return [] unless conf_file.file?
  return [] unless conf_file.readable?

  @library_paths_cache ||= T.let({}, T.nilable(T::Hash[String, T::Array[String]]))
  cache_key = conf_file.to_s
  if (cached_library_path_contents = @library_paths_cache[cache_key])
    return cached_library_path_contents
  end

  paths = Set.new
  directory = conf_file.realpath.dirname

  conf_file.open("r") do |file|
    file.each_line do |line|
      # Remove comments and leading/trailing whitespace
      line.strip!
      line.sub!(/\s*#.*$/, "")

      if line.start_with?(/\s*include\s+/)
        wildcard = Pathname(line.sub(/^\s*include\s+/, "")).expand_path(directory)

        Dir.glob(wildcard.to_s).each do |include_file|
          paths += library_paths(include_file)
        end
      elsif line.empty?
        next
      else
        paths << line
      end
    end
  end

  @library_paths_cache[cache_key] = paths.to_a
end

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# File 'os/linux/ld.rb', line 57

def self.sysconfdir(brewed: true)
  fallback_sysconfdir = "/etc"

  match = ld_so_diagnostics(brewed:).match(/path.sysconfdir="(.+)"/)
  return fallback_sysconfdir unless match

  match.captures.compact.first || fallback_sysconfdir
end

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# File 'os/linux/ld.rb', line 67

def self.system_dirs(brewed: true)
  dirs = []

  ld_so_diagnostics(brewed:).split("\n").each do |line|
    match = line.match(/path.system_dirs\[0x.*\]="(.*)"/)
    next unless match

    dirs << match.captures.compact.first
  end

  dirs
end

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# File 'os/linux/ld.rb', line 24

def self.system_ld_so
  @system_ld_so ||= T.let(nil, T.nilable(::Pathname))
  @system_ld_so ||= begin
    linker = DYNAMIC_LINKERS.find { |s| File.executable? s }
    Pathname(linker) if linker
  end
end