/
scraper.js
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/
scraper.js
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// This is a template for a Node.js scraper on morph.io (https://morph.io)
var cheerio = require("cheerio");
var request = require("request");
var sqlite3 = require("sqlite3").verbose();
function initDatabase(callback) {
// Set up sqlite database.
var db = new sqlite3.Database("data.sqlite");
db.serialize(function() {
db.run("CREATE TABLE IF NOT EXISTS data (name TEXT, desc TEXT, link TEXT)");
callback(db);
});
}
function updateRow(db, name, description, link) {
// Insert some data.
var statement = db.prepare("INSERT INTO data VALUES (?, ?, ?)");
statement.run(name, description, link);
statement.finalize();
}
function readRows(db) {
// Read some data.
db.each("SELECT rowid AS id, name FROM data", function(err, row) {
console.log(row.id + ": " + row.name);
});
}
function fetchPage(url, callback) {
// Use request to read in pages.
request(url, function (error, response, body) {
if (error) {
console.log("Error requesting page: " + error);
return;
}
callback(body);
});
}
var BASE_URL = "http://www.phrases.org.uk/meanings/";
function run(db) {
// Use request to read in pages.
fetchPage(BASE_URL + "phrases-and-sayings-list.html", function (body) {
// Use cheerio to find things in the page with css selectors.
var $ = cheerio.load(body);
$("p.phrase-list a").each(function () {
var phraseLink = $(this).href;
fetchPage(BASE_URL + phraseLink, function (phraseBody) {
var $ = cheerio.load(phraseBody);
var phraseTitle = $(".content h1").text().trim();
var phraseDesc = $(".meanings-body").text().trim();
var phraseUrl = $(BASE_URL + phraseLink)
updateRow(db, phraseTitle, phraseDesc, phraseUrl);
});
});
readRows(db);
db.close();
});
}
initDatabase(run);