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Convert a remote image to Base64-encoded string
// Uses [request](https://github.com/mikeal/request)
// /?url=http://nodejs.org/logo.png
// /?uri=http://nodejs.org/logo.png
// /?url=http://nodejs.org/logo.png&cb=cbName
// /?url=http://nodejs.org/logo.png&callback=cbName
var fs = require('fs');
var url = require('url');
var http = require('http');
var request = require('request');
var port = 8888;
var server = http.createServer(function requestListener(httpRequest, httpResponse) {
var params = url.parse(httpRequest.url, true).query;
var imageURL = params.url || params.uri || params.image;
var callbackName = params.callback || params.cb || '';
if (!imageURL) return httpResponse.end();
request(
{url: imageURL, encoding: 'binary'},
function onImageResponse(error, imageResponse, imageBody) {
if (error) throw error;
var imageType = imageResponse.headers['content-type'];
var base64 = new Buffer(imageBody, 'binary').toString('base64');
var dataURI = 'data:' + imageType + ';base64,' + base64;
var jsonString = JSON.stringify({
code: imageResponse.statusCode,
desc: http.STATUS_CODES[imageResponse.statusCode],
type: imageType,
orig: imageURL,
data: dataURI
});
var jsonpString = callbackName + '(' + jsonString + ')';
var payload = callbackName ? jsonpString : jsonString;
httpResponse.writeHead(imageResponse.statusCode, {'Content-Type': 'application/json'});
httpResponse.write(payload);
httpResponse.end();
}
);
});
server.listen(port);
console.log('base64 server created and listening on port', port);
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