Class: WifiWand::Models::Helpers::QrCodeGenerator

Inherits:
Object
  • Object
show all
Includes:
StringPredicates
Defined in:
lib/wifi_wand/models/helpers/qr_code_generator.rb

Constant Summary collapse

QR_FIELD_ESCAPES = 
{
  ';'  => '\\;',
  ','  => '\\,',
  ':'  => '\\:',
  '\\' => '\\\\',
}.freeze
RENDER_FORMATS = 
{
  ansi: 'ANSI',
  png:  'PNG',
  svg:  'SVG',
  eps:  'EPS',
}.freeze
BINARY_RENDER_FORMATS = 
[:png].freeze
FILE_OUTPUT_FORMATS = 
{
  '.png' => :png,
  '.svg' => :svg,
  '.eps' => :eps,
}.freeze

Instance Method Summary collapse

Methods included from StringPredicates

string_nil_or_blank?, string_nil_or_empty?

Instance Method Details

#generate(model, filespec = nil, overwrite: false, password: nil, in_stream: $stdin) ⇒ Object 



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# File 'lib/wifi_wand/models/helpers/qr_code_generator.rb', line 59

def generate(model, filespec = nil, overwrite: false, password: nil, in_stream: $stdin)
  # Normalize filespec for robust API.
  spec = filespec&.to_s
  if spec == '-'
    raise WifiWand::Error,
      'Use print_qr_code to print an ANSI QR code or render_qr_code(format: :ansi) to return one.'
  end

  filename = nil
  format = nil
  if spec && !spec.empty?
    filename = spec
    format = qr_output_format_for(filename)
    validate_qr_output_directory_ready!(filename)
  end

  ensure_qrencode_available(model)

  network_name, security, resolved_password, is_hidden = qr_context(model, password)
  qr_string = build_wifi_qr_string(network_name, resolved_password, security, is_hidden: is_hidden)

  filename ||= build_filename(network_name)
  format ||= qr_output_format_for(filename)
  validate_qr_output_directory_ready!(filename) unless spec && !spec.empty?
  confirm_overwrite(filename, overwrite: overwrite, output_stream: model.out_stream,
    input_stream: in_stream)
  rendered_output = render_qr_data(model, qr_string, format: format)
  write_qr_file(model, filename, rendered_output)
  filename
end

#render(model, format: :ansi, password: nil) ⇒ Object 



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# File 'lib/wifi_wand/models/helpers/qr_code_generator.rb', line 90

def render(model, format: :ansi, password: nil)
  qrencode_type = qrencode_type_for(format)
  ensure_qrencode_available(model)

  network_name, security, resolved_password, is_hidden = qr_context(model, password)
  qr_string = build_wifi_qr_string(network_name, resolved_password, security, is_hidden: is_hidden)
  render_qr_data(model, qr_string, format: format, qrencode_type: qrencode_type)
end