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153 lines
No EOL
8.7 KiB
JavaScript
153 lines
No EOL
8.7 KiB
JavaScript
/**
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* @description Set of short commonly used methods for handling HTML elements
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* @author Ylian Saint-Hilaire
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* @version v0.0.1b
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*/
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// Add startsWith for IE browser
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if (!String.prototype.startsWith) { String.prototype.startsWith = function (str) { return this.lastIndexOf(str, 0) === 0; }; }
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if (!String.prototype.endsWith) { String.prototype.endsWith = function (str) { return this.indexOf(str, this.length - str.length) !== -1; }; }
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// Quick UI functions, a bit of a replacement for jQuery
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//function Q(x) { if (document.getElementById(x) == null) { console.log('Invalid element: ' + x); } return document.getElementById(x); } // "Q"
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function Q(x) { return document.getElementById(x); } // "Q"
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function QS(x) { try { return Q(x).style; } catch (x) { } } // "Q" style
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function QE(x, y) { try { Q(x).disabled = !y; } catch (x) { } } // "Q" enable
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function QV(x, y) { try { QS(x).display = (y ? '' : 'none'); } catch (x) { } } // "Q" visible
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function QA(x, y) { Q(x).innerHTML += y; } // "Q" append
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function QH(x, y) { Q(x).innerHTML = y; } // "Q" html
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function QC(x) { try { return Q(x).classList; } catch (x) { } } // "Q" class
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// Move cursor to end of input box
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function inputBoxFocus(x) { Q(x).focus(); var v = Q(x).value; Q(x).value = ''; Q(x).value = v; }
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// Binary encoding and decoding functions
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function ReadShort(v, p) { return (v.charCodeAt(p) << 8) + v.charCodeAt(p + 1); }
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function ReadShortX(v, p) { return (v.charCodeAt(p + 1) << 8) + v.charCodeAt(p); }
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function ReadInt(v, p) { return (v.charCodeAt(p) * 0x1000000) + (v.charCodeAt(p + 1) << 16) + (v.charCodeAt(p + 2) << 8) + v.charCodeAt(p + 3); } // We use "*0x1000000" instead of "<<24" because the shift converts the number to signed int32.
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function ReadSInt(v, p) { return (v.charCodeAt(p) << 24) + (v.charCodeAt(p + 1) << 16) + (v.charCodeAt(p + 2) << 8) + v.charCodeAt(p + 3); }
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function ReadIntX(v, p) { return (v.charCodeAt(p + 3) * 0x1000000) + (v.charCodeAt(p + 2) << 16) + (v.charCodeAt(p + 1) << 8) + v.charCodeAt(p); }
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function ShortToStr(v) { return String.fromCharCode((v >> 8) & 0xFF, v & 0xFF); }
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function ShortToStrX(v) { return String.fromCharCode(v & 0xFF, (v >> 8) & 0xFF); }
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function IntToStr(v) { return String.fromCharCode((v >> 24) & 0xFF, (v >> 16) & 0xFF, (v >> 8) & 0xFF, v & 0xFF); }
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function IntToStrX(v) { return String.fromCharCode(v & 0xFF, (v >> 8) & 0xFF, (v >> 16) & 0xFF, (v >> 24) & 0xFF); }
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function MakeToArray(v) { if (!v || v == null || typeof v == 'object') return v; return [v]; }
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function SplitArray(v) { return v.split(','); }
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function Clone(v) { return JSON.parse(JSON.stringify(v)); }
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function EscapeHtml(x) { if (typeof x == 'string') return x.replace(/&/g, '&').replace(/>/g, '>').replace(/</g, '<').replace(/"/g, '"').replace(/'/g, '''); if (typeof x == 'boolean') return x; if (typeof x == 'number') return x; }
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function EscapeHtmlBreaks(x) { if (typeof x == 'string') return x.replace(/&/g, '&').replace(/>/g, '>').replace(/</g, '<').replace(/"/g, '"').replace(/'/g, ''').replace(/\r/g, '<br />').replace(/\n/g, '').replace(/\t/g, ' '); if (typeof x == 'boolean') return x; if (typeof x == 'number') return x; }
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// Move an element from one position in an array to a new position
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function ArrayElementMove(arr, from, to) { arr.splice(to, 0, arr.splice(from, 1)[0]); };
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// Print object for HTML
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function ObjectToStringEx(x, c) {
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var r = "";
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if (x != 0 && (!x || x == null)) return '(Null)';
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if (x instanceof Array) { for (var i in x) { r += '<br />' + gap(c) + 'Item #' + i + ": " + ObjectToStringEx(x[i], c + 1); } }
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else if (x instanceof Object) { for (var i in x) { r += '<br />' + gap(c) + i + ' = ' + ObjectToStringEx(x[i], c + 1); } }
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else { r += EscapeHtml(x); }
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return r;
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}
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// Print object for console
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function ObjectToStringEx2(x, c) {
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var r = '';
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if (x != 0 && (!x || x == null)) return '(Null)';
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if (x instanceof Array) { for (var i in x) { r += '\r\n' + gap2(c) + 'Item #' + i + ': ' + ObjectToStringEx2(x[i], c + 1); } }
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else if (x instanceof Object) { for (var i in x) { r += '\r\n' + gap2(c) + i + ' = ' + ObjectToStringEx2(x[i], c + 1); } }
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else { r += EscapeHtml(x); }
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return r;
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}
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// Create an ident gap
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function gap(c) { var x = ''; for (var i = 0; i < (c * 4) ; i++) { x += ' '; } return x; }
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function gap2(c) { var x = ''; for (var i = 0; i < (c * 4) ; i++) { x += ' '; } return x; }
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// Print an object in html
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function ObjectToString(x) { return ObjectToStringEx(x, 0); }
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function ObjectToString2(x) { return ObjectToStringEx2(x, 0); }
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// Convert a hex string to a raw string
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function hex2rstr(d) {
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if (typeof d != 'string' || d.length == 0) return '';
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var r = '', m = ('' + d).match(/../g), t;
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while (t = m.shift()) r += String.fromCharCode('0x' + t);
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return r
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}
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// Convert decimal to hex
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function char2hex(i) { return (i + 0x100).toString(16).substr(-2).toUpperCase(); }
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// Convert a raw string to a hex string
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function rstr2hex(input) { var r = '', i; for (i = 0; i < input.length; i++) { r += char2hex(input.charCodeAt(i)); } return r; }
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// UTF-8 encoding & decoding functions
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function encode_utf8(s) { return unescape(encodeURIComponent(s)); }
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function decode_utf8(s) { return decodeURIComponent(escape(s)); }
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// Convert a string into a blob
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function data2blob(data) {
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var bytes = new Array(data.length);
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for (var i = 0; i < data.length; i++) bytes[i] = data.charCodeAt(i);
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return new Blob([new Uint8Array(bytes)]);
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}
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// Convert a UTF8 string into a blob
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function utf2blob(str) {
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var bytes = [], utf8 = unescape(encodeURIComponent(str));
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for (var i = 0; i < utf8.length; i++) { bytes.push(utf8.charCodeAt(i)); }
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return new Blob([new Uint8Array(bytes)]);
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}
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// Generate random numbers
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function random(max) { return Math.floor(Math.random() * max); }
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// Trademarks
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function trademarks(x) { return x.replace(/\(R\)/g, '®').replace(/\(TM\)/g, '™'); }
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// Pad a number with zeros on the left
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function zeroPad(num, c) { if (c == null) { c = 2; } var s = '00000000' + num; return s.substr(s.length - c); }
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// String validation
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function isAlphaNumeric(str) { if (typeof str == 'number') { return true; } return (str.match(/^[A-Za-z0-9]+$/) != null); };
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function isSafeString(str) { return ((typeof str == 'string') && (str.indexOf('<') == -1) && (str.indexOf('>') == -1) && (str.indexOf('&') == -1) && (str.indexOf('"') == -1) && (str.indexOf('\'') == -1) && (str.indexOf('+') == -1) && (str.indexOf('(') == -1) && (str.indexOf(')') == -1) && (str.indexOf('#') == -1) && (str.indexOf('%') == -1) && (str.indexOf(':') == -1)) };
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function isSafeString2(str) { return ((typeof str == 'string') && (str.indexOf('<') == -1) && (str.indexOf('>') == -1) && (str.indexOf('&') == -1) && (str.indexOf('"') == -1) && (str.indexOf('\'') == -1) && (str.indexOf('+') == -1) && (str.indexOf('(') == -1) && (str.indexOf(')') == -1) && (str.indexOf('#') == -1) && (str.indexOf('%') == -1)) };
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// Parse URL arguments, only keep safe values
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function parseUriArgs(decodeUrl) {
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var href = window.document.location.href;
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if (href.endsWith('#')) { href = href.substring(0, href.length - 1); }
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var name, r = {}, parsedUri = href.split(/[\?&|]/);
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parsedUri.splice(0, 1);
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for (var j in parsedUri) {
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var arg = parsedUri[j], i = arg.indexOf('=');
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name = arg.substring(0, i);
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r[name] = arg.substring(i + 1);
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if (decodeUrl) { r[name] = decodeURIComponent(arg.substring(i + 1)); }
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if (!isSafeString(r[name])) { delete r[name]; } else { var x = parseInt(r[name]); if (x == r[name]) { r[name] = x; } }
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}
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return r;
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}
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// check_webp_feature:
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// 'feature' can be one of 'lossy', 'lossless', 'alpha' or 'animation'.
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// 'callback(feature, isSupported)' will be passed back the detection result (in an asynchronous way!)
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// From: https://stackoverflow.com/questions/5573096/detecting-webp-support
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function check_webp_feature(feature, callback) {
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var kTestImages = {
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lossy: 'UklGRiIAAABXRUJQVlA4IBYAAAAwAQCdASoBAAEADsD+JaQAA3AAAAAA'//,
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//lossless: 'UklGRhoAAABXRUJQVlA4TA0AAAAvAAAAEAcQERGIiP4HAA==',
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//alpha: 'UklGRkoAAABXRUJQVlA4WAoAAAAQAAAAAAAAAAAAQUxQSAwAAAARBxAR/Q9ERP8DAABWUDggGAAAABQBAJ0BKgEAAQAAAP4AAA3AAP7mtQAAAA==',
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//animation: 'UklGRlIAAABXRUJQVlA4WAoAAAASAAAAAAAAAAAAQU5JTQYAAAD/////AABBTk1GJgAAAAAAAAAAAAAAAAAAAGQAAABWUDhMDQAAAC8AAAAQBxAREYiI/gcA'
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};
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var img = new Image();
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img.onload = function () {
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var result = (img.width > 0) && (img.height > 0);
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callback(feature, result);
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};
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img.onerror = function () {
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callback(feature, false);
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};
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img.src = 'data:image/webp;base64,' + kTestImages[feature];
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} |