typograph.js

var http = require('http');

module.exports = {
    start: function(params, callback){
        this.callback = callback;
        if(params.text != null){
            this.send(params);
        } else {
            this.error("Text not found!");
        }
    },

    send: function(params){
        _this = this;
        var xmlRequest = 
            '<?xml version="1.0" encoding="UTF-8"?>' + 
            '<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" ' +
            'xmlns:xsd="http://www.w3.org/2001/XMLSchema" ' + 
            'xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">' + 
                '<soap:Body>' +
                    '<ProcessText xmlns="http://typograf.artlebedev.ru/webservices/">' + 
                        '<text>' + params.text + '</text>' + 
                        '<entityType>4</entityType>' +
                        '<useP>'+params.usep+'</useP>' +
                        '<useBr>'+params.usebr+'</useBr>' +
                        '<maxNobr>'+params.maxnobr+'</maxNobr>' +
                    '</ProcessText>' +
                '</soap:Body>' +
            '</soap:Envelope>';

        var options = {
            hostname: 'typograf.artlebedev.ru',
            port: 80,
            path: '/webservices/typograf.asmx',
            method: 'POST',
            headers: {
                'Content-length': this.lengthInUtf8Bytes(xmlRequest),
                "content-type":"text/xml; charset=UTF-8"
            }
        };

        var req = http.request(options, function(res) {
            res.setEncoding('utf8');
            res.on('data', function (chunk) {
                var start = chunk.indexOf('ProcessTextResult')+18;
                var length = chunk.indexOf('</ProcessTextResult') - start;
                _this.response(chunk.substr(chunk.indexOf('ProcessTextResult')+18, length))
            });
        });
        
        req.on('error', function(e) {
            _this.error('Problem with request: ' + e.message);
        });
        
        // write data to request body
        req.write(xmlRequest);
        req.end();
    },

    response: function(typoText){
        this.callback(null, typoText);
    },

    error: function(errorText){
        this.callback('Error: ' + errorText, null);
    },

    lengthInUtf8Bytes: function(str) {
        var m = encodeURIComponent(str).match(/%[89ABab]/g);
        return str.length + (m ? m.length : 0);
    }
}