109 lines
2.1 KiB
JavaScript
109 lines
2.1 KiB
JavaScript
/**
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* JSON Format Plugin
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*
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* @module plugins/json
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* @license [MIT]{@link https://github.com/archiverjs/node-archiver/blob/master/LICENSE}
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* @copyright (c) 2012-2014 Chris Talkington, contributors.
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*/
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var inherits = require('util').inherits;
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var Transform = require('readable-stream').Transform;
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var crc32 = require('buffer-crc32');
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var util = require('archiver-utils');
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/**
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* @constructor
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* @param {(JsonOptions|TransformOptions)} options
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*/
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var Json = function(options) {
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if (!(this instanceof Json)) {
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return new Json(options);
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}
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options = this.options = util.defaults(options, {});
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Transform.call(this, options);
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this.supports = {
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directory: true
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};
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this.files = [];
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};
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inherits(Json, Transform);
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/**
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* [_transform description]
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*
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* @private
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* @param {Buffer} chunk
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* @param {String} encoding
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* @param {Function} callback
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* @return void
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*/
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Json.prototype._transform = function(chunk, encoding, callback) {
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callback(null, chunk);
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};
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/**
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* [_writeStringified description]
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*
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* @private
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* @return void
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*/
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Json.prototype._writeStringified = function() {
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var fileString = JSON.stringify(this.files);
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this.write(fileString);
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};
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/**
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* [append description]
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*
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* @param {(Buffer|Stream)} source
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* @param {EntryData} data
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* @param {Function} callback
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* @return void
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*/
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Json.prototype.append = function(source, data, callback) {
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var self = this;
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data.crc32 = 0;
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function onend(err, sourceBuffer) {
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if (err) {
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callback(err);
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return;
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}
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data.size = sourceBuffer.length || 0;
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data.crc32 = crc32.unsigned(sourceBuffer);
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self.files.push(data);
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callback(null, data);
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}
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if (data.sourceType === 'buffer') {
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onend(null, source);
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} else if (data.sourceType === 'stream') {
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util.collectStream(source, onend);
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}
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};
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/**
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* [finalize description]
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*
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* @return void
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*/
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Json.prototype.finalize = function() {
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this._writeStringified();
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this.end();
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};
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module.exports = Json;
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/**
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* @typedef {Object} JsonOptions
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* @global
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*/ |