StackGenVis: Alignment of Data, Algorithms, and Models for Stacking Ensemble Learning Using Performance Metrics
https://doi.org/10.1109/TVCG.2020.3030352
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149 lines
3.3 KiB
149 lines
3.3 KiB
'use strict';
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var fs = require('fs');
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var utils = require('lazy-cache')(require);
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var fn = require;
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require = utils;
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/**
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* Lazily required module dependencies
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* (here, `require` is actually lazy-cache)
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*/
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require('define-property', 'define');
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require('extend-shallow', 'extend');
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require('kind-of');
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require('strip-bom-buffer');
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require('strip-bom-string');
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require('through2', 'through');
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require = fn;
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/**
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* Stream byte order marks from a string
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*/
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utils.stripBom = function(val) {
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if (typeof val === 'string') {
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return utils.stripBomString(val);
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}
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if (utils.isBuffer(val)) {
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return utils.stripBomBuffer(val);
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}
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return val;
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};
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/**
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* Return true if the given value is a stream.
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*/
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utils.isObject = function(val) {
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return utils.kindOf(val) === 'object';
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};
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utils.isBuffer = function(val) {
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return utils.kindOf(val) === 'buffer';
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};
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utils.isStream = function(val) {
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return utils.isObject(val)
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&& (typeof val.pipe === 'function')
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&& (typeof val.on === 'function');
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};
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utils.typeOf = function(val) {
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if (utils.isStream(val)) {
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return 'stream';
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}
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return utils.kindOf(val);
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};
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utils.syncContent = function(file) {
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Object.defineProperty(file, 'content', {
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configurable: true,
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set: function(content) {
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syncContents(this, content);
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},
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get: function() {
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var content;
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if (typeof this._content === 'string') {
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content = this._content;
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} else if (utils.isBuffer(this.contents)) {
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content = this.contents.toString();
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} else {
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content = this.contents;
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}
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syncContents(this, content);
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return this._content;
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}
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});
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};
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utils.syncContents = function(file, options) {
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var opts = utils.extend({}, options, file.options);
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utils.syncContent(file);
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syncContents(file, file.contents || file.content);
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Object.defineProperty(file, 'contents', {
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configurable: true,
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set: function(contents) {
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syncContents(this, contents);
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},
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get: function fn() {
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var contents;
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if (utils.isBuffer(this._contents) || utils.isStream(this._contents)) {
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contents = this._contents;
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} else if (opts.read === false || opts.noread === true) {
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contents = null;
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} else if (opts.buffer !== false && this.stat && this.stat.isFile()) {
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contents = utils.stripBom(fs.readFileSync(this.path));
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} else if (this.stat && this.stat.isFile()) {
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contents = fs.createReadStream(this.path);
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} else {
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}
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syncContents(this, contents);
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return contents;
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}
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});
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};
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/**
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* Sync the _content and _contents properties on a view to ensure
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* both are set when setting either.
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*
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* @param {Object} `view` instance of a `View`
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* @param {String|Buffer|Stream|null} `contents` contents to set on both properties
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*/
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function syncContents(file, val) {
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switch (utils.typeOf(val)) {
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case 'buffer':
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file._contents = val;
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file._content = val.toString();
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break;
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case 'string':
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file._contents = new Buffer(val);
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file._content = val;
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break;
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case 'stream':
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file._contents = val;
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file._content = val;
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break;
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case 'undefined':
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case 'null':
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default: {
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file._contents = null;
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file._content = null;
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break;
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}
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}
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}
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/**
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* Expose utils
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*/
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module.exports = utils;
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