##Parsing Wikipedia markup is basically NP-Hard

its really the worst. I'm trying my best.

wtf_wikipedia turns wikipedia article markup into JSON, and handles many vile recursive template shinanigans, half-XML implimentations, depreciated and obscure template variants, and illicit wiki-esque shorthands.

Making your own parser is never a good idea, but this library is a very detailed and deliberate creature. Place your faith well within.

npm install wtf_wikipedia

then:

var wtf_wikipedia = require("wtf_wikipedia")
//fetch wikipedia markup from api..
wtf_wikipedia.from_api("Toronto", "en", function(markup){
  var obj= wtf_wikipedia.parse(markup)
  // {text:[...], infobox:{}, categories:[...], images:[] }
  var mayor= obj.infobox.leader_name
  // "John Tory"
})

if you only want some nice plaintext, and no junk:

var text= wtf_wikipedia.plaintext(markup)
// "Toronto is the most populous city in Canada and the provincial capital..."

Wikimedia's Parsoid javascript parser is the official wikiscript parser. It reliably turns wikiscript into HTML, but not valid XML. To use it for mining, you need a [wikiscript -> virtual DOM -> screen-scraping] flow, but getting structured data this way is a challenge.

This library is built to work well with wikipedia-to-mongo, letting you parse a wikipedia dump in nodejs easily.

#What it does

• Detects and parses redirects and disambiguation pages
• Parse infoboxes into a formatted key-value object
• Handles recursive templates and links- like [[.. [[...]] ]]
• Per-sentence plaintext and link resolution
• Parse and format internal links
• Properly resolve {{CURRENTMONTH}} and {{CONVERT ..}} type templates
• Parse images, files, and categories
• Eliminate xml, latex, css, table-sorting, and 'Egyptian hierogliphics' cruft

m ok, lets write our own parser what culd go rong

its a combination of instaview, txtwiki, and uses the inter-language data from Parsoid javascript parser.

#Methods

.parse(markup)

turns wikipedia markup into a nice json object

.from_api(title, lang_or_wikiid, callback)

retrieves raw contents of a wikipedia article - or other mediawiki wiki identified by its dbname

to call non-english wikipedia apis, add it as the second paramater to from_api

wtf_wikipedia.from_api("Toronto", "de", function(markup){
  var text= wtf_wikipedia.plaintext(markup)
  //Toronto ist mit 2,6 Millionen Einwohnern..
})

you may also pass the wikipedia page id as parameter instead of the page title:

wtf_wikipedia.from_api(64646, "de", function(markup){
  //...
})

the from_api method follows redirects. ##.plaintext(markup) returns only nice text of the article

if you're scripting this from the shell, install -g, and:

$ wikipedia_plaintext George Clooney
# George Timothy Clooney (born May 6, 1961) is an American actor ...

$ wikipedia Toronto Blue Jays
# {text:[...], infobox:{}, categories:[...], images:[] }

#Sample Output Sample output for Royal Cinema

{
  "text": {
    "Intro": [
      {
        "text": "The Royal Cinema is an Art Moderne event venue and cinema in Toronto, Canada.",
        "links": [
          {
            "page": "Art Moderne"
          },
          {
            "page": "Movie theater",
            "src": "cinema"
          },
          {
            "page": "Toronto"
          }
        ]
      },
      ...
      {
        "text": "The Royal was featured in the 2013 film The F Word.",
        "links": [
          {
            "page": "The F Word (2013 film)",
            "src": "The F Word"
          }
        ]
      }
    ]
  },
  "categories": [
    "National Historic Sites in Ontario",
    "Cinemas and movie theatres in Toronto",
    "Streamline Moderne architecture in Canada",
    "Theatres completed in 1939"
  ],
  "images": [
    "Royal_Cinema.JPG"
  ],
  "infobox": {
    "former_name": {
      "text": "The Pylon, The Golden Princess"
    },
    "address": {
      "text": "608 College Street",
      "links": [
        {
          "page": "College Street (Toronto)",
          "src": "College Street"
        }
      ]
    },
    "opened": {
      "text": 1939
    },
    ...
  }
}

Sample Output for Whistling

{ type: 'page',
  text:
   { 'Intro': [ [Object], [Object], [Object], [Object] ],
     'Musical/melodic whistling':
      [ [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object] ],
     'Functional whistling': [ [Object], [Object], [Object], [Object], [Object], [Object] ],
     'Whistling as a form of communication':
      [ [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object] ],
     'Sport': [ [Object], [Object], [Object], [Object], [Object] ],
     'Superstition':
      [ [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object],
        [Object] ],
     ' Whistling competitions': [ [Object], [Object], [Object], [Object] ]
     },
     'categories': [ 'Oral communication', 'Vocal music', 'Vocal skills' ],
     'images': [ 'Image:Duveneck Whistling Boy.jpg' ],
     'infobox': {} }

Contributing

Never-ender projects like these need all-hands, and I'm a pretty friendly dude.

npm install
npm test
grunt #to package-up client-side

Don't be mad at me, be mad at them

MIT