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GreasyForkScriptUpdate

Check update for Greasyfork userscript

当前为 2021-08-27 提交的版本，查看 最新版本。

此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.cn-greasyfork.org/scripts/431490/964614/GreasyForkScriptUpdate.js 

  1. /* eslint-disable no-multi-spaces */
  2. // ==UserScript==
  3. // @name         GreasyForkScriptUpdate
  4. // @namespace    GreasyForkScriptUpdate
  5. // @version      0.3
  6. // @description  Check update for Greasyfork userscript
  7. // @author       PY-DNG
  8. // @include      http*://*/*
  9. // @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
  10. // @grant        GM_xmlhttpRequest
  11. // @grant        unsafeWindow
  12. // ==/UserScript==
  13. (function () {
  14. 	'use strict';
  15.  
  16. 	// Accessable in Global_Scope
  17. 	typeof(unsafeWindow) !== 'object' && (window.unsafeWindow = window);
  18. 	unsafeWindow.GreasyForkUpdater = GreasyForkUpdater;
  19.  
  20. 	// Use 'new' keyword
  21. 	function GreasyForkUpdater() {
  22. 		const GFU = this;
  23.  
  24. 		// Parse '// ==UserScript==\n...\n// ==/UserScript==' to {name: '', namespace: '', version: '', ...}
  25. 		// Returns metaData object directly
  26. 		GFU.parseMetaData = function(metaText) {
  27. 			const metaData = {};
  28. 			const lines = metaText.split('\n');
  29. 			const edgeMatcher     = /==\/?UserScript==/i;
  30. 			const keyValueMatcher = /^\/\/ *@([^@ ]+) +(.+) *$/;
  31. 			const keyOnlyMatcher  = /^\/\/ *@([^@ ]+) *$/;
  32. 			for (let line of lines) {
  33. 				// Get & validate line
  34. 				line = line.trim();
  35. 				if (line.match(edgeMatcher)) {continue;};
  36. 				if (!line.match(keyValueMatcher) && !line.match(keyOnlyMatcher)) {continue;};
  37.  
  38. 				// Get key-value
  39. 				const match = line.match(keyValueMatcher) ? line.match(keyValueMatcher) : line.match(keyOnlyMatcher);
  40. 				const key = match[1];
  41. 				const value = match[2] ? match[2] : true;
  42.  
  43. 				// Attach to metaData object
  44. 				if (!metaData[key]) {
  45. 					metaData[key] = value;
  46. 				} else {
  47. 					if (metaData[key] instanceof Array) {
  48. 						metaData[key].push(value);
  49. 					} else {
  50. 						metaData[key] = [metaData[key], value];
  51. 					}
  52. 				}
  53. 			}
  54. 			return metaData;
  55. 		}
  56.  
  57. 		// Request latest script meta text from greasyfork
  58. 		// You'll get metaText string as the first argument in your callback function
  59. 		GFU.requestMetaText = function(scriptID, callback, args=[]) {
  60. 			if (!scriptID) {return false;};
  61. 			const url = 'https://greasyfork.org/scripts/{SID}/code/script.meta.js'.replace('{SID}', String(scriptID));
  62. 			GM_xmlhttpRequest({
  63. 				method: 'GET',
  64. 				url: url,
  65. 				responseType: 'text',
  66. 				onload: function(e) {
  67. 					callback && callback.apply(null, [e.responseText].concat(args));
  68. 				}
  69. 			})
  70. 		}
  71.  
  72. 		// Request & parse latest script meta data from greasyfork
  73. 		// You'll get metaData object as the first argument in your callback function
  74. 		GFU.getMetaData = function(scriptID, callback, args=[]) {
  75. 			if (!scriptID) {return false;};
  76. 			GFU.requestMetaText(scriptID, function(metaText) {
  77. 				const metaData = GFU.parseMetaData(metaText);
  78. 				callback && callback.apply(null, [metaData].concat(args));
  79. 			})
  80. 		}
  81.  
  82. 		// Compare two version texts(v1, v2), returns true if v1 > v2
  83. 		// Returns null while version text contains Non-demical text period(s)
  84. 		GFU.versionNewer = function(v1, v2) {
  85. 			v1 = v1.trim().split('.');
  86. 			v2 = v2.trim().split('.');
  87.  
  88. 			for (let i = 0; i < Math.min(v1.length, v2.length); i++) {
  89. 				v1[i] = Number(v1[i]);
  90. 				v2[i] = Number(v2[i]);
  91. 				if (!v1[i] || !v2[i]) {return null;};
  92. 				if (v1[i] !== v2[i]) {return v1[i] > v2[i];};
  93. 			}
  94.  
  95. 			return v1.length > v2.length;
  96. 		}
  97.  
  98. 		// Check if there's new version of the script on GreasyFork using scriptID, current version text
  99. 		// You'll get update(bool), updateurl(string), metaData(object) as the first, second and third argument in your callback function
  100. 		GFU.checkUpdate = function(scriptID, curver, callback, args=[]) {
  101. 			if (!scriptID) {return false;};
  102. 			GFU.getMetaData(scriptID, function(metaData) {
  103. 				const update = GFU.versionNewer(metaData.version, curver);
  104. 				const updateurl = 'https://greasyfork.org/scripts/{SID}/code/script.user.js'.replace('{SID}', String(scriptID));
  105. 				callback && callback.apply(null, [update, updateurl, metaData].concat(args));
  106. 			})
  107. 		}
  108.  
  109. 		// Check & Install update automatically
  110. 		GFU.update = function(scriptID, curver) {
  111. 			GFU.checkUpdate(scriptID, curver, function() {
  112. 				const url = 'https://greasyfork.org/scripts/{SID}/code/script.user.js'.replace('{SID}', String(scriptID));
  113. 				location.href = url;
  114. 			})
  115. 		}
  116. 	}
  117. })();