qr-imager: Library to generate QR codes from bytestrings and objects
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- qr-imager-1.0.1.6.tar.gz [browse] (Cabal source package)
- Package description (as included in the package)
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| Versions [RSS] | 0.1.0.0, 0.1.0.1, 0.1.2.0, 0.1.2.1, 0.2.0.0, 0.2.1.0, 0.2.1.1, 0.2.1.2, 0.2.1.3, 0.2.2.0, 1.0.0.0, 1.0.0.1, 1.0.0.2, 1.0.0.3, 1.0.1.0, 1.0.1.1, 1.0.1.2, 1.0.1.3, 1.0.1.5, 1.0.1.6, 1.0.1.7, 1.0.1.8, 2.0.0.0, 2.0.0.1, 2.0.0.2 |
|---|---|
| Dependencies | aeson, base (>=4.9 && <5), bytestring, cryptonite, directory, either (<5), haskell-qrencode, jose-jwt, JuicyPixels, microlens, optparse-applicative, process, split, vector [details] |
| License | BSD-3-Clause |
| Copyright | Copyright: (c) 2016 Vanessa McHale |
| Author | Vanessa McHale |
| Maintainer | vanessa.mchale@reconfigure.io |
| Category | Data |
| Home page | https://github.com/vmchale/QRImager#readme |
| Source repo | head: git clone https://github.com/vmchale/QRImager |
| Uploaded | by vmchale at 2018-02-27T02:24:46Z |
| Distributions | |
| Reverse Dependencies | 1 direct, 0 indirect [details] |
| Downloads | 14409 total (90 in the last 30 days) |
| Rating | (no votes yet) [estimated by Bayesian average] |
| Your Rating | |
| Status | Docs available [build log] Last success reported on 2018-02-27 [all 1 reports] |
Readme for qr-imager-1.0.1.6
[back to package description]QR Imager Library
This is a library to generate .png files from QR codes.
Dependencies
The library depends on the C library libqrencode which you will need to install separately, as well as the C library Zbar from here. You should also be able to get them from your distro.
Library
The library can be used via the exported functions createQRCode, byteStringToQR and readQRString, plus their signed counterparts. The first two export to ".png" while the third can be used on any image format Zbar supports.
The functions bsToImg and objToImg output JuicyPixels images for your further manipulation.
Executable
Installation
For building haskell, the best tool is currently [http://haskellstack.org](stack). Install it, and then type
stack install --install-ghc
in the appropriate directory, and it will be installed to your path.
Use
Compiling will generate an executable called qrpipe which reads from stdin and outputs a file as the second argument, e.g.
echo 'My name is: Vanessa" | qrpipe write -v "nametag.png"
To then read the nametag:
qrpipe read "nametag.png"