const FileSaver = require('file-saver');
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let escapeEntityMap = {
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"&": "&",
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"<": "<",
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">": ">",
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'"': '"',
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"'": ''',
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"/": '/'
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};
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export default {
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// to be used on individual strings
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escapeHtml: function(string) {
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return String(string).replace(/[&<>"'\/]/g, function (s) {
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return escapeEntityMap[s];
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});
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},
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|
// To be used with tagged templates
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html: function(pieces){
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let result = pieces[0];
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let substitutions = [].slice.call(arguments, 1);
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for (let i = 0; i < substitutions.length; ++i) {
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result += this.escapeHtml(substitutions[i]) + pieces[i + 1];
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}
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return result;
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},
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queryParams: function(location){
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let params = {};
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let paramsRaw = (location.search.replace("?", "").match(/([^&=]+)=?([^&]*)/g) || []);
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for (let i in paramsRaw){
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let parts = paramsRaw[i].split("=");
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if (parts[1] !== undefined){
|
params[parts[0]] = parts[1];
|
}
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}
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return params;
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},
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toSearchQuery: function(params){
|
let parts = [];
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for (let k in params){
|
parts.push(k + "=" + params[k]);
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}
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if (parts.length > 0) return "?" + parts.join("&");
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else return "";
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},
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|
replaceSearchQueryParam: function(location, param, value){
|
let q = this.queryParams(location);
|
q[param] = value;
|
return this.toSearchQuery(q);
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},
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buildUrlWithQuery: function(url, params){
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return (url.indexOf("?") !== -1 ? url.slice(0, url.indexOf("?")) : url) + this.toSearchQuery(params);
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},
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clone: function(obj){
|
return JSON.parse(JSON.stringify(obj));
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},
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// "/a/b" --> http://localhost/a/b
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absoluteUrl: function(path, href = window.location.href){
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if (path[0] === '/') path = path.slice(1);
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let parser = document.createElement('a');
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parser.href = href;
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|
return `${parser.protocol}//${parser.host}/${path}`;
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},
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|
assert: function(condition, message) {
|
if (!condition) {
|
message = message || "Assertion failed";
|
if (typeof Error !== "undefined") {
|
throw new Error(message);
|
}
|
throw message; // Fallback
|
}
|
},
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|
getCurrentScriptDir: function(){
|
let scripts= document.getElementsByTagName('script');
|
let path= scripts[scripts.length-1].src.split('?')[0]; // remove any ?query
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let mydir= path.split('/').slice(0, -1).join('/')+'/'; // remove last filename part of path
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return mydir;
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},
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saveAs: function(text, filename){
|
var blob = new Blob([text], {type: "text/plain;charset=utf-8"});
|
FileSaver.saveAs(blob, filename);
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},
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// http://stackoverflow.com/questions/15900485/correct-way-to-convert-size-in-bytes-to-kb-mb-gb-in-javascript
|
bytesToSize: function(bytes, decimals = 2){
|
if(bytes == 0) return '0 byte';
|
var k = 1000; // or 1024 for binary
|
var dm = decimals || 3;
|
var sizes = ['bytes', 'Kb', 'Mb', 'Gb', 'Tb', 'Pb', 'Eb', 'Zb', 'Yb'];
|
var i = Math.floor(Math.log(bytes) / Math.log(k));
|
return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];
|
},
|
|
isMobile: function(){
|
return navigator.userAgent.match(/(iPad)|(iPhone)|(iPod)|(android)|(webOS)/i);
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},
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|
userInputToFilename(text, extension = ""){
|
return text.replace(/[^0-9a-zA-Z-_]+/g, '').replace(/(\s|\/)+/g, "-") + extension;
|
},
|
|
uuidv4(){
|
return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, c => {
|
var r = Math.random() * 16 | 0,
|
v = c === 'x' ? r : r & 0x3 | 0x8;
|
return v.toString(16);
|
});
|
}
|
};
|
