Module: ALSA::Aconnect::Parser

Defined in:
lib/alsa/aconnect/parser.rb

Class Method Summary collapse

Class Method Details

.parse_client(output) ⇒ Object 



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# File 'lib/alsa/aconnect/parser.rb', line 15

def parse_client(output)
  client_line, *port_lines = output.split("\n")

  ports = []
  port_lines.reject(&:empty?).each do |line|
    line = line.strip
    if line =~ /\A\d+/
      ports.push(line)
    else
      ports[-1] = "#{ports[-1]} #{line}"
    end
  end

  matched = client_line.match(/\Aclient (\d+): '(.+)' \[(.+)\]\z/)
  id = matched[1].to_i
  name = matched[2].strip
  tags = matched[3].split(',').map { |l| l.split('=') }.to_h
  {
    id: id,
    name: name,
    type: tags['type'],
    card: tags['card'],
    pid: tags['pid'],
    ports: ports
  }
end

.parse_clients(output) ⇒ Object 



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# File 'lib/alsa/aconnect/parser.rb', line 8

def parse_clients(output)
  output
    .split('client ')
    .reject(&:empty?)
    .map { |l| "client #{l.strip}" }
end

.parse_port(output) ⇒ Object 



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# File 'lib/alsa/aconnect/parser.rb', line 42

def parse_port(output)
  matched = output.match(/\A(\d) '(.+)'/)
  id = matched[1].to_i
  name = matched[2].strip
  connected_to_type = nil
  connected_to_client_id = nil
  connected_to_port_id = nil

  matched_from = output.match(/Connected From: (\d):(\d)\z/)
  if matched_from
    connected_to_type = :input
    connected_to_client_id = matched_from[1]
    connected_to_port_id = matched_from[2]
  end

  matched_from = output.match(/Connecting To: (\d):(\d)\z/)
  if matched_from
    connected_to_type = :output
    connected_to_client_id = matched_from[1]
    connected_to_port_id = matched_from[2]
  end

  {
    id: id,
    name: name,
    connected_to_type: connected_to_type,
    connected_to_client_id: connected_to_client_id,
    connected_to_port_id: connected_to_port_id
  }
end