cppwit

A wit.ai client for c++, allowing embedded devices to do NLP efficiently.

Motivation

wit.ai is a great, open source tool that allows you to send text or speech to the wit.ai server, and receive back a list of entities and values. Currently, pywit provides an API for Python, however there is no API for lower level languages, which would be particularly useful for cheaper and embedded devices.

cppwit fills this gap, providing a simple API for usage of wit in embedded devices (or non-embedded devices where the developer chooses to run C/C++!)

Dependencies

We rely on Niels Lohmann's JSON library to parse the json response from the wit.ai server. On OSX you can download it using homebrew, or you can copy his json.hpp file to /usr/local/include/nlohmann.

Installation

> git clone https://github.com/jakebloom/cppwit.git
...
> cd cppwit
> # to install a dynamic library
> make dynamic # might need sudo
> # to create a static library
> make static # result will be in ./bin/libWit.a

Using the Dynamic Library

#include <Wit.h>
#include <WitResp.h>

int main(int argc, char* argv) {
    Wit client = Wit("YOUR_WIT_API_TOKEN");
    WitResp res = client.message("Turn on the lights");
    res.print();
    return 0;
}

Output:

ID: 1gaLyFYybXzh8hnLt
Text: Turn on the lights
Entity: device
	Confidence: 1.000000
	Type: value
	Value: light

Entity: on_off
	Confidence: 0.985204
	Type:
	Value: on

Using the Static Library

We can use the same code as the dynamic library and expect the same output, however we must compile the static library together with the binary:

> g++ -o main main.c -lWit
> ./main

Creator's Note

All contributions to this repository are done so in a personal capacity, not on behalf of my employer.