50 lines
1.5 KiB
JavaScript
50 lines
1.5 KiB
JavaScript
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'use strict';
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var ReadableStream = require('stream').Readable,
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inherits = require('util').inherits,
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Serializer = require('./index');
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/**
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* Streaming AST node to an HTML serializer.
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* A [readable stream]{@link https://nodejs.org/api/stream.html#stream_class_stream_readable}.
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* @class SerializerStream
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* @memberof parse5
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* @instance
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* @extends stream.Readable
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* @param {ASTNode} node - Node to serialize.
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* @param {SerializerOptions} [options] - Serialization options.
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* @example
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* var parse5 = require('parse5');
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* var fs = require('fs');
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*
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* var file = fs.createWriteStream('/home/index.html');
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*
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* // Serializes the parsed document to HTML and writes it to the file.
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* var document = parse5.parse('<body>Who is John Galt?</body>');
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* var serializer = new parse5.SerializerStream(document);
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*
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* serializer.pipe(file);
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*/
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var SerializerStream = module.exports = function (node, options) {
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ReadableStream.call(this);
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this.serializer = new Serializer(node, options);
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Object.defineProperty(this.serializer, 'html', {
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//NOTE: To make `+=` concat operator work properly we define
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//getter which always returns empty string
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get: function () {
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return '';
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},
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set: this.push.bind(this)
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});
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};
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inherits(SerializerStream, ReadableStream);
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//Readable stream implementation
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SerializerStream.prototype._read = function () {
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this.serializer.serialize();
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this.push(null);
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};
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