https://github.com/pggalaviz/qrcoder

A Rust NIF for creating SVG QR codes
https://github.com/pggalaviz/qrcoder

elixir nif qr-code qr-generator qrcode qrcode-generator rust svg

Last synced: 3 months ago
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A Rust NIF for creating SVG QR codes

• Host: GitHub
• URL: https://github.com/pggalaviz/qrcoder
• Owner: pggalaviz
• License: mit
• Created: 2018-09-21T17:52:14.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2019-11-23T23:07:23.000Z (about 5 years ago)
• Last Synced: 2024-09-17T20:17:56.843Z (5 months ago)
• Topics: elixir, nif, qr-code, qr-generator, qrcode, qrcode-generator, rust, svg
• Language: Elixir
• Homepage: https://hex.pm/packages/qr_coder
• Size: 23.4 KB
• Stars: 12
• Watchers: 2
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# QRCoder

[![Build Status](https://travis-ci.org/pggalaviz/qrcoder.svg?branch=master)](https://travis-ci.org/pggalaviz/qrcoder)

An Elixir Rust NIF to create SVG QR codes.

It's a wrapper around [qrcode-rust](https://github.com/kennytm/qrcode-rust).

## Installation

You can find **QRCoder** in [Hex.pm](https://hex.pm/packages/qr_coder) and you can

add it to your project dependencies:

```elixir

# mix.exs

def deps do

  [

    {:qr_coder, "~> 0.1.0"}

  ]

end

```

## Usage

You can then call the function:

```elixir

{:ok, svg} = QRCoder.generate_svg("Elixir is awesome")

```

This will return a `tuple` where **svg** is black & white svg binary:

![alt text](./examples/basic.svg "Basic QR Code")

You can change the dark color by providing a valid HEX color:

```elixir

{:ok, svg} = QRCoder.generate_svg("Elixir is awesome", "#21ABA5")

```

![alt text](./examples/custom.svg "Custom QR Code")

You can then save it:

```elixir

{:ok, svg} = QRCoder.generate_svg("Elixir is awesome")

File.write("/your/path/qrcode.svg", svg)

```

Or just return the binary:

```elixir

# inside a Phoenix controller

{:ok, svg} = QRCoder.generate_svg("Elixir is awesome")

conn

|> put_resp_header("content-type", "image/svg+xml")

|> put_resp_header("cache-control", "private")

|> send_resp(200, svg)

```