137 lines
2.6 KiB
JavaScript
137 lines
2.6 KiB
JavaScript
/**
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* TODO license
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* Outputter.
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*/
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/**
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* Outputter class.
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* Abstract (not exported).
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*/
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function Outputter() {
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//
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// ATTRIBUTES
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//
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/**
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* Output stream.
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*/
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this.out = null;
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};
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Outputter.prototype = {
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//
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// FUNCTIONS
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//
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/**
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* Add header to request.
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* Available before calling outputTo().
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*/
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addHeader: function (name, value) {},
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/**
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* Init before outputing.
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*/
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init: function () {},
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/**
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* Listen action 'data' event.
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* Receive resource instance to output.
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*/
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output: function (resource) { },
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/**
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* Listen action 'end' event.
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* End of action data transmission.
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*/
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end: function() {
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logger.debug('Action ended');
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this.out.end();
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},
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/**
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* Set target stream and start outputting.
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*/
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outputTo: function(stream) {
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this.out = stream;
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}
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};
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/**
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* Outputter in json format.
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*/
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var JSONOutputter = function() {
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Outputter.call(this);
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logger.debug('JSON');
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this.buffer = new Array();
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this.colStarted = false;
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};
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// inherits Outputter
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JSONOutputter.prototype = Object.create(Outputter.prototype, {
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output: {
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value: function(resource) {
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logger.debug('ressource: '+JSON.stringify(this.buffer));
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logger.debug('colStarted: '+this.colStarted);
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if (!this.colStarted && this.buffer.length == 0)
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this.buffer.push(resource);
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else {
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this.buffer.push(resource);
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if (!this.colStarted) {
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this.out.write('[');
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this.colStarted = true;
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} else
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this.out.write(',');
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while (this.buffer.length>0) {
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var r = this.buffer.shift();
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this.out.write(JSON.stringify(r));
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if (this.buffer.length>0)
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this.out.write(',');
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}
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}
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}, enumerable: true, configurable: true, writable: true
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},
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end: {
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value: function() {
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if (this.buffer.length == 1) {
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// single resource
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this.out.write(JSON.stringify(this.buffer[0]));
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}
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if (this.colStarted) {
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//end collection
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this.out.write(']');
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}
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logger.debug('Action ended');
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this.out.end();
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}, enumerable: true, configurable: true, writable: true
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},
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init: {
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value: function() {
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this.addHeader('Content-Type', 'application/json');
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}, enumerable: true, configurable: true, writable: true
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}
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});
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/**
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* Outputter in html.
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*/
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var HtmlOutputter = function() {
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Outputter.call(this);
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};
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// inherits Outputter
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HtmlOutputter.prototype = Object.create(Outputter.prototype, {
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});
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/**
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* Outputter in text.
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*/
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var TextOutputter = function() {
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Outputter.call(this);
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};
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// inherits Outputter
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TextOutputter.prototype = Object.create(Outputter.prototype, {
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});
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//module.exports.JSONOutputter = JSONOutputter;
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module.exports = {
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JSONOutputter: JSONOutputter,
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TextOutputter: TextOutputter,
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HtmlOutputter: HtmlOutputter
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};
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