Skraper

~~Here should be some fancy logo~~

Overview

Kotlin/Java library and cli tool which allows scraping and downloading posts, attachments, other meta from more than 10 sources without any authorization or full page rendering. Based on jsoup, jackson and kotlin-coroutines.

Repository contains:

• Cli tool
• Kotlin library
• Telegram bot

Current list of implemented sources:

• Facebook
• Instagram
• Twitter
• Youtube
• TikTok
• Telegram
• Twitch
• Reddit
• 9GAG
• Pinterest
• Flickr
• Tumblr
• IFunny
• VK
• Pikabu

Bugs

Unfortunately, each web-site is subject to change without any notice, so the tool may work incorrectly because of that. If that happens, please let me know via an issue.

Cli tool

Cli tool allows to:

• download media with flag --media-only from almost all presented sources.
• scrape posts meta information

Requirements:

• Java: 1.8 +
• Maven (optional)

Build tool

./mvnw clean package -DskipTests=true 

Usage:

./skraper --help

usage: [-h] PROVIDER PATH [-n LIMIT] [-t TYPE] [-o OUTPUT] [-m]
       [--parallel-downloads PARALLEL_DOWNLOADS]

optional arguments:
  -h, --help                                show this help message and exit

  -n LIMIT, --limit LIMIT                   posts limit (50 by default)

  -t TYPE, --type TYPE                      output type, options: [log, csv, json, xml, yaml]

  -o OUTPUT, --output OUTPUT                output path

  -m, --media-only                          scrape media only

  --parallel-downloads PARALLEL_DOWNLOADS   amount of parallel downloads for media items if
                                            enabled flag --media-only (4 by default)


positional arguments:
  PROVIDER                                  skraper provider, options: [facebook, instagram,
                                            twitter, youtube, twitch, reddit, 9gag, pinterest,
                                            flickr, tumblr, ifunny, vk, pikabu]

  PATH                                      path to user/community/channel/topic/trend

Examples:

./skraper ninegag /hot 
./skraper reddit /r/memes -n 5 -t csv -o ./reddit/posts
./skraper youtube /user/JetBrainsTV/videos --media-only -n 2

Kotlin Library

Distribution

Maven:

<dependency>
    <groupId>ru.sokomishalov.skraper</groupId>
    <artifactId>skrapers</artifactId>
    <version>x.y.z</version>
</dependency>

Gradle kotlin dsl:

implementation("ru.sokomishalov.skraper:skrapers:x.y.z)

Usage

Instantiate specific scraper

As mentioned before, the provider implementation list is:

• FacebookSkraper
• InstagramSkraper
• TwitterSkraper
• YoutubeSkraper
• TikTokSkraper
• TelegramSkraper
• TwitchSkraper
• RedditSkraper
• NinegagSkraper
• PinterestSkraper
• FlickrSkraper
• TumblrSkraper
• IFunnySkraper
• VkSkraper
• PikabuSkraper

After that usage as simple as is:

val skraper = InstagramSkraper(client = OkHttpSkraperClient())

Important moment: it is highly recommended to not use DefaultBlockingSkraperClient . There are some more efficient, non-blocking and resource-friendly implementations for SkraperClient. To use them you just have to put required dependencies in the classpath.

Current http-client implementation list:

• DefaultBlockingClient: simple java.net.* blocking api implementation
• OkHttpSkraperClient: okhttp3 implementation
• SpringReactiveSkraperClient: spring-webflux client implementation
• KtorSkraperClient: ktor-client-jvm implementation

Available methods

Each scraper is a class which implements Skraper interface:

interface Skraper {
    val client: SkraperClient
    fun getPosts(path: String): Flow<Post>
    suspend fun getPageInfo(path: String): PageInfo?
    fun supports(media: Media): Boolean
    suspend fun resolve(media: Media): Media
}

Also, there are some provider-specific kotlin extensions for implementations. You can find them out at the provider implementation package.

Usage from plain Java

Kotlin coroutines is a CPS implementation (aka callbacks). Here is a quite good java side example of how to call kotlin suspend functions from plain Java.

Scrape user/community/channel/topic/trend posts

To scrape the latest posts for specific user, channel or trend use skraper like that:

suspend fun main() {
    val skraper = FacebookSkraper()
    val posts = skraper.getUserPosts(username = "memes").take(2).toList() // extension for getPosts()
    // or 
    val postsDetected = Skrapers.getPosts(url = "https://facebook.com/memes") // aggregating singleton
    println(JsonMapper().writerWithDefaultPrettyPrinter().writeValueAsString(posts))
}

Received data structure is similar to each other provider's. Output data example:

[
  {
    "id": "5029851093699104",
    "text": "gotta love em!",
    "publishedAt": 1580744400000,
    "statistics": {
      "likes": 79,
      "comments": 3
    },
    "media": [
      {
        "url": "https://facebook.com/memes/posts/5029851093699104?__xts__%5B0%5D=68.ARA2yRI2YnlXQRKX7Pdphh8ztgvnP11aYE_bZFPNmqLpJZLhwJaG24gDPUTiKDLv-J_E09u2vLjCXalpmEuGSmVR0BkVtcng_i6QV8x5e-aZUv0Mkn1wwKLlhp5NNH6zQWKlqDqRjZrwvcKeUi0unzzulRCHRvDIrbz2leM6PLescFySwMYbMmKFc7ctqaC_F7nJ09Ya0lz9Pqaq_Rh6UsNKom6fqdgHAuoHV894a3QRuyY0BC6fQuXZLOLbRIfEVK3cF9Z5UQiXUYruCySF-WpQEV0k72x6DIjT6B3iovYFnBGHaji9VAx2PByZ-MDs33D1Hz96Mk-O1Pj7zBwO6FvXGhkUJgepiwUOVd0q-pV83rS5EhjtPFDylNoNO2xkDUSIi483p49vumVPWtmab8LX1V6w2anf55kh6pedCXcH3D8rBjz8DaTBnv995u9kk5im-1-HdAGQHyKrCZpaA0QyC-I4oGsCoIJGck3RO8u_SoHcfe2tKjTgPe6j9p1D&__tn__=-R",
        "aspectRatio": 0.864,
        "duration": 10860.000000000
      }
    ]
  },
  {
    "id": "4990218157662398",
    "text": "Interesting",
    "publishedAt": 1580742000000,
    "statistics": {
      "likes": 3092,
      "comments": 514
    },
    "media": [
      {
        "url": "https://scontent.fhrk1-1.fna.fbcdn.net/v/t1.0-0/p526x296/52333452_10157743612509879_529328953723191296_n.png?_nc_cat=1&_nc_ohc=oNMb8_mCbD8AX-w9zeY&_nc_ht=scontent.fhrk1-1.fna&oh=ca8a719518ecfb1a24f871282b860124&oe=5E910D0C",
        "aspectRatio": 0.8960573476702509
      }
    ]
  }
]

You can see the full model structure for posts and others here

Scrape user/community/channel/topic/trend info

It is possible to scrape user/channel/trend info for some purposes:

suspend fun main() {
    val skraper = TwitterSkraper()
    val pageInfo = skraper.getUserInfo(username = "memes") // extension for `getPageInfo()`
    // or 
    val pageInfoDetected = Skrapers.getPageInfo(url = "https://twitter.com/memes") // aggregating singleton
    println(JsonMapper().writerWithDefaultPrettyPrinter().writeValueAsString(pageInfo))
}

Output:

{
  "nick": "memes",
  "name": "Memes.com",
  "description": "http://memes.com is your number one website for the funniest content on the web. You will find funny pictures, funny memes and much more.",
  "statistics": {
    "posts": 10848,
    "followers": 154718
  },
  "avatar": {
    "url": "https://pbs.twimg.com/profile_images/824808708332941313/mJ4xM6PH_normal.jpg"
  },
  "cover": {
    "url": "https://abs.twimg.com/images/themes/theme1/bg.png"
  }
}

Resolve provider relative url

Sometimes you need to know direct media link:

suspend fun main() {
    val skraper = InstagramSkraper()
    val info = skraper.resolve(Video(url = "https://www.instagram.com/p/B-flad2F5o7/"))
    val serializer = JsonMapper().writerWithDefaultPrettyPrinter()
    println(serializer.writeValueAsString(info))
}

Output:

{
  "url": "https://scontent-amt2-1.cdninstagram.com/v/t50.2886-16/91508191_213297693225472_2759719910220905597_n.mp4?_nc_ht=scontent-amt2-1.cdninstagram.com&_nc_cat=104&_nc_ohc=27bC52qar_oAX-7J2Zh&oe=5EC0BC52&oh=0aafee2860c540452b76e7b8e336147d",
  "aspectRatio": 0.8010012515644556,
  "thumbnail": {
    "url": "https://scontent-amt2-1.cdninstagram.com/v/t51.2885-15/e35/91435498_533808773845524_5302421141680378393_n.jpg?_nc_ht=scontent-amt2-1.cdninstagram.com&_nc_cat=100&_nc_ohc=8gPAcByc6YAAX_kDBWm&oh=5edf6b9d90d606f9c0e055b7dbcbfa45&oe=5EC0DDE8",
    "aspectRatio": 0.8010012515644556
  }
}

Download media

There is "static" method which allows to download any media from all known implemented sources:

suspend fun main() {
    val tmpDir = Files.createTempDirectory("skraper").toFile()

    val testVideo = Skrapers.download(
        media = Video("https://youtu.be/fjUO7xaUHJQ"),
        destDir = tmpDir,
        filename = "Gandalf"
    )

    val testImage = Skrapers.download(
        media = Image("https://www.pinterest.ru/pin/89509111320495523/"),
        destDir = tmpDir,
        filename = "Do_no_harm"
    )

    println(testVideo)
    println(testImage)
}

Output:

/var/folders/sf/hm2h5chx5fl4f70bj77xccsc0000gp/T/skraper8377953374796527777/Gandalf.mp4
/var/folders/sf/hm2h5chx5fl4f70bj77xccsc0000gp/T/skraper8377953374796527777/Do_no_harm.jpg

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