79 lines
2.4 KiB
JavaScript
79 lines
2.4 KiB
JavaScript
// this script will set up a HTTP server on this port (local connections only)
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// and will receive POST requests (not urlencoded)
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var PORT = 16000;
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var server = require('webserver').create();
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var page = require('webpage').create();
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var args = require('system').args;
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var activeRequests = {};
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var service = null;
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if (args.length > 1) {
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PORT = args[1];
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}
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// thanks to:
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// stackoverflow.com/questions/5515869/string-length-in-bytes-in-javascript
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function utf8Strlen(str) {
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var m = encodeURIComponent(str).match(/%[89ABab]/g);
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return str.length + (m ? m.length : 0);
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}
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page.onCallback = function(data) {
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var out,
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log = '',
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record = activeRequests[data[0]],
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resp = record[0],
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t = ', took ' + (((new Date()).getTime() - record[1])) + 'ms.';
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if ((typeof data[1]) === 'string') {
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resp.statusCode = 200;
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log = data[0].substr(0, 30) + '.. ' + data[0].length + 'B query, OK ' + data[1].length + '/' + data[2].length + 'B result' + t;
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out = JSON.stringify({tex:data[0],svg:data[1],mml:data[2],'log':log, 'sucess':true});
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resp.setHeader('Content-Type', 'application/json');
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resp.setHeader('Content-Length', utf8Strlen(out).toString() );
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resp.write(out);
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//console.log(log);
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} else {
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resp.statusCode = 400;
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log = data[0].substr(0, 30) + '.. ' +
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data[0].length + 'B query, ERR ' + data[1][0] + t;
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out = JSON.stringify({err:data[1][0],svg:data[1],mml:data[2],'log':log,'sucess':false});
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resp.write(out);
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console.log(log);
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phantom.exit(1);
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}
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resp.close();
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};
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console.log('loading bench page');
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page.open('index.html', function ( ) {
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service = server.listen('127.0.0.1:' + PORT, function(req, resp) {
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var query;
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if (req.method === 'GET') {
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// URL starts with /? and is urlencoded.
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query = decodeURI(req.url.substr(2));
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} else {
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query = req.post.tex;
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}
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if (query === undefined) {
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return resp.close();
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}
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activeRequests[query] = [resp, (new Date()).getTime()];
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// this is just queueing call, it will return at once.
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page.evaluate(function(q) {
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window.engine.process(q, window.callPhantom);
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}, query);
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});
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if (!service) {
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console.log('server failed to start on port ' + PORT);
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phantom.exit(1);
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}/* else {
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console.log("server started on port " + PORT);
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console.log("you can hit server with http://localhost:" + PORT + "/?2^n");
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console.log(".. or by sending tex source in POST (not url encoded)");
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}*/
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});
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