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https://github.com/lefticus/nu_plugin_calc

Last synced: 2 days ago
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Host: GitHub
URL: https://github.com/lefticus/nu_plugin_calc
Owner: lefticus
License: unlicense
Created: 2019-09-25T23:07:56.000Z (about 5 years ago)
Default Branch: master
Last Pushed: 2019-09-26T17:21:06.000Z (about 5 years ago)
Last Synced: 2024-11-05T16:56:31.581Z (about 2 months ago)
Language: CMake
Size: 13.7 KB
Stars: 3
Watchers: 3
Forks: 0
Open Issues: 0
Metadata Files:
- Readme: README.md
- License: LICENSE

Awesome Lists containing this project

README

# nu_shell_calc

## About

A hacked-together C++ plugin for nushell that calculates math expressions, based on the Python example: https://github.com/nushell/contributor-book/blob/master/en/plugins.md#creating-a-plugin-in-python

Expressions are in the form of:

```
[id = ]
```

* ID assignment is optional
* Valid identifiers are in the form of `[a-z]+`
* Allowed operations: `-`, `+`, `*`, `/`
* All arithmetic is done with `double`

Valid input list might be:

```
a = 26.4 + 2.3
b = 19.2 - 1.45
c = a + b
a / b
c + 102
```

## Building

All dependencies are gathered using conan.io

```shell
git clone [email protected]:lefticus/nu_plugin_calc
mkdir nu_plugin_calc-build
cd nu_plugin_calc-build
cmake -D CMAKE_BUILD_TYPE=Release ../nu_plugin_calc
make
```

## Usage within nushell

Make sure the binary `nu_plugin_calc` is available in your path.

```shell
cat filewithexpressions | calc
```

## To Do

* Consider supporting scientific notation
* Set up tests
* Set up CI
* Make logging optional on command line
* Consider more advanced expressions
* Stronger typed JSON-RPC API of some sort
* Actually make the below build status items do things...

[![codecov](https://codecov.io/gh/lefticus/nu_shell_calc/branch/master/graph/badge.svg)](https://codecov.io/gh/lefticus/nu_shell_calc)

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