Created
August 2, 2013 17:33
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Rough draft of a HN Markov generator.
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var mysql = require('mysql'); | |
var connection = mysql.createConnection({ | |
user : 'root', | |
password : 'root', | |
database : 'hnmarkov' | |
}); | |
Array.prototype.random = function () { | |
return this[Math.floor(Math.random() * this.length)]; | |
}; | |
connection.connect(); | |
var memory = {} | |
, learnTitle = function (txt) { | |
// Clean up the text a bit, English is weird. | |
txt = txt.title.toLowerCase().replace(/[:,.!?()'"]/g, ''); | |
var parts = txt.split(' ') | |
, prev = ''; //beginning-of-word | |
parts.reduce(learnLetter, memory); | |
function learnLetter (mem, letter) { | |
if (!mem[prev]) { | |
mem[prev] = []; | |
} | |
mem[prev].push(letter); | |
prev = letter; | |
return mem; | |
}; | |
} | |
, generate = function(lastWord) { | |
var currentChoices = memory [(lastWord || '')]; | |
if (!currentChoices) return '.'; | |
var current = currentChoices.random(); | |
return current + ' ' + generate(current); | |
}; | |
connection.query('SELECT title FROM stories', function(err, rows, fields) { | |
if (err) throw err; | |
rows.forEach(learnTitle); | |
console.log(generate()); | |
connection.end(); | |
}); |
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