gutschilla/elixir-qr-code-svg

Creates SVGs out of bytes generated by https://github.com/remiq/qr_code

QrCodeSvg

Creates a simple SVG out of the bytes that QRCode creates.

QrCodeSvg.encode(string, ecc \ 'M')

Encodes a string, returns a string containing an SVG.

Accepts ecc (error correction) mode as parameter (defaults to 'M'), can be

• 'L': 7% lost data recovery
• 'M': 15%
• 'Q': 25% (doesn't always work)
• 'H': 30% (often fails)

Examples

svg = QrCodeSvg.encode("Hey")
"<svg... ><rect../></svg>"

Known bug

Due to a some unpleasantries in the underlying QRCode module, longer strings do not work.

QrCodeSvg.encode("http://foo.bar.baz")

Will throw up :-/

Installation

If available in Hex, the package can be installed by adding qr_code_svg to your list of dependencies in mix.exs:

def deps do
  [
    {:qr_code_svg, "~> 0.1.0"}
  ]
end

Documentation can be generated with ExDoc and published on HexDocs. Once published, the docs can be found at https://hexdocs.pm/qr_code_svg.