Scraper
=======

[![Build Status](https://ci.gitnet.fr/buildStatus/icon?job=Gitnet%2Fscraper%2Fmaster)](https://ci.gitnet.fr/job/Gitnet/job/scraper/job/master/)

This project is a basic tool to scrap a data from a website
using a CSS selector.

For example, if you want to retrieve the number of a project's releases hosted on github:

With CLI
---

```
node src/cli.js \
  --url https://github.com/foo/bar \
  --selector '.repository-content .numbers-summary li:nth-child(4) a' \
  --tags \
  --breaks \
  --spaces \
  --breaks \
  --trim
```

...will show `XXX releases`.

More help with `node src/cli.js --help`.

With code
---------

```
const scraper = require('deblan-scraper')

const options = {
  url: 'https://github.com/foo/bar',
  acceptAllStatus: false, // Optional, default is `false`
  method: 'GET', // Optional, default is `GET`
}

const isMultiple = false // get the first result, `true` to get an array of results

const selector = '.repository-content .numbers-summary li:nth-child(4) a'

const filters = {
  tags: null, // Removes tags. You can specify the tags to remove (separated by comma)
  breaks: null, // Removes breaks (\n, \r)
  spaces: null, // Replaces 2 successive spaces by 1, except breaks
  trim: null, // Strips whitespaces from the beginning and end of the value
}

scraper(
  options,
  selector,
  filters,
  function(value) {
    console.log(value)
  },
  function(error) {
    console.log(error)
  },
  isMultiple
)
```

Installation
------------

Requirements:

* node >= 10
* yarn

```
$ git clone https://gitnet.fr/deblan/scraper.git
$ cd scraper
$ yarn
```