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mirror of https://github.com/Jermolene/TiddlyWiki5 synced 2024-11-24 02:27:19 +00:00
TiddlyWiki5/core/modules/upgraders/plugins.js
2014-07-12 09:09:36 +01:00

59 lines
2.1 KiB
JavaScript

/*\
title: $:/core/modules/upgraders/plugins.js
type: application/javascript
module-type: upgrader
Upgrader module that checks that plugins are newer than any already installed version
\*/
(function(){
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
var UPGRADE_LIBRARY_TITLE = "$:/UpgradeLibrary";
exports.upgrade = function(wiki,titles,tiddlers) {
var self = this,
messages = {},
upgradeLibrary,
getLibraryTiddler = function(title) {
if(!upgradeLibrary) {
upgradeLibrary = wiki.getTiddlerData(UPGRADE_LIBRARY_TITLE,{});
upgradeLibrary.tiddlers = upgradeLibrary.tiddlers || {};
}
return upgradeLibrary.tiddlers[title]
};
// Go through all the incoming tiddlers
$tw.utils.each(titles,function(title) {
var incomingTiddler = tiddlers[title];
// Check if we're dealing with a plugin
if(incomingTiddler && incomingTiddler["plugin-type"] && incomingTiddler["version"]) {
// Upgrade the incoming plugin if we've got a newer version in the upgrade library
var libraryTiddler = getLibraryTiddler(title);
if(libraryTiddler && libraryTiddler["plugin-type"] && libraryTiddler["version"]) {
if($tw.utils.checkVersions(libraryTiddler.version,incomingTiddler.version)) {
tiddlers[title] = libraryTiddler;
messages[title] = $tw.language.getString("Import/Upgrader/Plugins/Upgraded",{variables: {incoming: incomingTiddler.version, upgraded: libraryTiddler.version}});
return;
}
}
// Suppress the incoming plugin if it is older than the currently installed one
var existingTiddler = wiki.getTiddler(title);
if(existingTiddler && existingTiddler.hasField("plugin-type") && existingTiddler.hasField("version")) {
// Reject the incoming plugin by blanking all its fields
if($tw.utils.checkVersions(existingTiddler.fields.version,incomingTiddler.version)) {
tiddlers[title] = Object.create(null);
messages[title] = $tw.language.getString("Import/Upgrader/Plugins/Suppressed",{variables: {incoming: incomingTiddler.version, existing: existingTiddler.fields.version}});
return;
}
}
}
});
return messages;
};
})();