snippetify/snippet-sniffer

Crawling and scraping web pages to extract snippets

1.2.4 2020-07-01 22:14 UTC

This package is auto-updated.

Last update: 2020-07-31 22:41:09 UTC


README

Snippet sniffer allows you to extract code snippets from any websites.

What it does

This library allows you

  1. To get code snippets using search engine api (Google)
  2. To get code snippets from any web page by crawling url seeds.

How to use it

$ composer require snippetify/snippet-sniffer

Snippet Sniffer

use Snippetify\SnippetSniffer\SnippetSniffer;

// Configurations
$config = [
  // Required
  // Search engine api configuration keys
  'provider' => [
    "cx" => "your google Search engine ID",
    "key" => "your google API key"
    'name' => 'provider name (google)',
  ],
  // Optional
  // Useful for adding meta information to each snippet
  'app' => [
    "name" => "your App name",
    'version' => 'your App version',
  ],
  // Optional
  // Useful for logging
  'logger' => [
    "name" => "logger name",
    'file' => 'logger file path',
  ]
];

// Required
// Your query
$query = "your query";

// Optional
// Meta params
$meta = [
  "page" => 1,
  "limit" => 10,
];

// Fetch snippets
// @return Snippetify\SnippetSniffer\Common\Snippet[]
$snippets = SnippetSniffer::create($config)->fetch($query, $meta);
/*
* Snippet object public attributes [
*		title: string, 
* 	code: string, 
* 	description: string, 
* 	tags: array, // Array of string, also contains the snippet language
* 	meta: array
*]
*/

Providers

Providers allow you to get a stack of seeds(urls to scrape) from search engine API. Only Google search engine API is supported at this time, but you can create your own.

use Snippetify\SnippetSniffer\Providers\GoogleProvider;

// Search engine api configuration keys
$config = [
  "cx" => "your google Search engine ID",
  "key" => "your google API key"
];

// Your query
$query = "your query";

// Meta params
$meta = [
  "page" => 1,
  "limit" => 10,
];

// url seeds
// @return GuzzleHttp\Psr7\Uri[]
$urlSeeds = GoogleProvider::create($config)->fetch($query, $meta);
Add new providers to package
  1. Git clone the project
  2. Create your new class in the Snippetify\SnippetSniffer\Providers folder
  3. Each provider implements Snippetify\SnippetSniffer\Providers\ProviderInterface
  4. Take a look at Snippetify\SnippetSniffer\Providers\GoogleProvider to get you helped
  5. Your fetch method must return an array of Psr\Http\Message\UriInterface
  6. Add it in the providers stacks in the Snippetify\SnippetSniffer\Core.php
  7. Write tests. Take a look at Snippetify\SnippetSniffer\Tests\Providers\GoogleProviderTest to get you helped
  8. Send a pull request to us
Use your own providers
  1. Your provider must implement Snippetify\SnippetSniffer\Providers\ProviderInterface
  2. Take a look at Snippetify\SnippetSniffer\Providers\GoogleProvider to get you helped
  3. Your fetch method must return an array of Psr\Http\Message\UriInterface
  4. Pass your new provider in the configuration parameter or use the addProvider method
use Snippetify\SnippetSniffer\SnippetSniffer;

// Use Configurations
$config = [
  "providers" => [
    "provider_name" => ProviderClass::class,
    "provider_2_name" => Provider2Class::class // You can add as many as you want
  ]
];

// Or use addProvider method as follow
SnippetSniffer::create(...)
  ->addProvider('provider_name', ProviderClass::class)
  ->addProvider('provider_2_name', Provider2Class::class) // You can add as many as you want
  ...

Scrapers

Scrappers allow you to scrape html page and extract the snippets.

use GuzzleHttp\Psr7\Uri;
use Snippetify\SnippetSniffer\Scrapers\DefaultScraper;

// Configurations
$config = [
  // Optional
  // Useful for adding meta information to each snippet
  'app' => [
    "name" => "your App name",
    'version' => 'your App version',
  ],
  // Optional
  // Useful for logging
  'logger' => [
    "name" => "logger name",
    'file' => 'logger file path',
  ]
];

// Your url
$urlSeed = "website url to scrape";

// Fetch snippets
// @return Snippetify\SnippetSniffer\Common\Snippet[]
$snippets = (new DefaultScraper($config))->fetch(new Uri($urlSeed));
Add new scrapers to package
  1. Git clone the project
  2. Create your new class in the Snippetify\SnippetSniffer\Scrapers folder
  3. Each scraper implements Snippetify\SnippetSniffer\Scrapers\ScraperInterface
  4. Take a look at Snippetify\SnippetSniffer\Scrapers\StackoverflowScraper to get you helped
  5. Your fetch method must return an array of Snippetify\SnippetSniffer\Common\Snippet
  6. Add it in the scrapers stacks in the Snippetify\SnippetSniffer\Core.php
  7. Write tests. Take a look at Snippetify\SnippetSniffer\Tests\Scrapers\StackoverflowScraperTest to get you helped
  8. Send a pull request to us
Use your own scrapers
  1. Your scraper must implement Snippetify\SnippetSniffer\Scrapers\ScraperInterface
  2. Take a look at Snippetify\SnippetSniffer\Scrapers\StackoverflowScraper to get you helped
  3. Your fetch method must return an array of Snippetify\SnippetSniffer\Common\Snippet
  4. Pass your new scraper in the configuration parameter or use the addScraper method
use Snippetify\SnippetSniffer\SnippetSniffer;

// Important: Scrapper's name must be the website uri without the scheme. i.e. vuejs.org

// Configurations
$config = [
  "scrapers" => [
    "scraper_name" => ScraperClass::class,
    "scraper_2_name" => Scraper2Class::class // You can add as many as you want
  ]
];

// Or use addProvider method as follow
SnippetSniffer::create(...)
  ->addScraper('scraper_name', ScraperClass::class)
  ->addScraper('scraper_2_name', Scraper2Class::class) // You can add as many as you want
  ...

Snippet crawler

Snippet crawler allows you to extract all snippets from a website by crawling it.

use Snippetify\SnippetSniffer\WebCrawler;

// Optional
$config = [...];

// @return Snippetify\SnippetSniffer\Common\MetaSnippetCollection[]
$snippets = WebCrawler::create($config)->fetch(['your uri']);

Configuration reference

$config = [
  // Required 
  // Search engine api configuration keys
  // https://developers.google.com/custom-search/v1/introduction
  'provider' => [
    "cx" => "your google Search engine ID",
    "key" => "your google API key"
    'name' => 'provider name (google)',
  ],
  // Optional
  // Useful for adding meta information to each snippet
  'app' => [
    "name" => "your App name",
    'version' => 'your App version',
  ],
  // Optional
  // Useful for logging
  'logger' => [
    "name" => "logger name",
    'file' => 'logger file path',
  ],
  // Optional
  // Useful for scraping
  "html_tags" => [
    "snippet" => "pre[class] code, div[class] code, .highlight pre, code[class]", // Tags to fetch snippets
    "index" => "h1, h2, h3, h4, h5, h6, p, li" // Tags to index
  ],
  // Optional
  // Useful for adding new scrapers
  // The name must be the website host without the scheme i.e. not https://foo.com but foo.com
  "scrapers" => [
    "scraper_name" => ScraperClass::class,
    "scraper_2_name" => Scraper2Class::class // You can add as many as you want
  ],
  // Optional
  // Useful for adding new providers
  "providers" => [
    "provider_name" => ProviderClass::class,
    "provider_2_name" => Provider2Class::class // You can add as many as you want
  ],
  // Optional
  // Useful for web crawling
  // Please follow the link below for more information as we use Spatie crawler
  // https://github.com/spatie/crawler
  "crawler" => [
    "langs" => ['en'],
    "profile" => CrawlSubdomainsAndUniqueUri::class,
    "user_agent" => 'your user agent',
    "concurrency" => 10,
    "ignore_robots" => false,
    "maximum_depth" => null,
    "execute_javascript" => false,
    "maximum_crawl_count" => null,
    "parseable_mime_types" => 'text/html',
    "maximum_response_size" => 1024 * 1024 * 3,
    "delay_between_requests" => 250,
  ]
];

Changelog

Please see CHANGELOG for more information what has changed recently.

Testing

You must set the PROVIDER_NAME, PROVIDER_CX, PROVIDER_KEY, CRAWLER_URI, DEFAULT_SCRAPER_URI, STACKOVERFLOW_SCRAPER_URI keys in phpunit.xml file before running tests.

Important: Those links must contains at least one snippet otherwise the tests will failed. The Stackoverflow uri must be a question link with an accepted answer otherwise the tests will failed.

composer test

Contributing

Please see CONTRIBUTING for details.

Credits

  1. Evens Pierre

License

The MIT License (MIT). Please see License File for more information.