Merge pull request #2903 from node-red/plugin-resources

Allow module to provide resources and automatically expose them

packages/node_modules/@node-red/registry/lib/index.js

@@ -301,6 +301,17 @@ module.exports = {
      */
     getNodeExampleFlowPath: library.getExampleFlowPath,
 
+    /**
+     * Gets the full path to a module's resource file
+     * @param {String} module - the name of the module providing the resource file
+     * @param {String} path - the relative path of the resource file
+     * @return {String} the full path to the resource file
+     *
+     * @function
+     * @memberof @node-red/registry
+     */
+    getModuleResource: registry.getModuleResource,
+
     checkFlowDependencies: externalModules.checkFlowDependencies,
 
     registerPlugin: plugins.registerPlugin,
@@ -309,7 +320,8 @@ module.exports = {
     getPluginList: plugins.getPluginList,
     getPluginConfigs: plugins.getPluginConfigs,
     exportPluginSettings: plugins.exportPluginSettings,
-    
+
+
     deprecated: require("./deprecated")
 
 };

packages/node_modules/@node-red/registry/lib/localfilesystem.js

@@ -262,6 +262,14 @@ function getModuleNodeFiles(module) {
         result.examples = {path:examplesDir};
     } catch(err) {
     }
+
+    var resourcesDir = path.join(moduleDir,"resources");
+    try {
+        fs.statSync(resourcesDir)
+        result.resources = {path:resourcesDir};
+    } catch(err) {
+    }
+
     return result;
 }
 
@@ -406,6 +414,7 @@ function convertModuleFileListToObject(moduleFiles,seedObject) {
             user: moduleFile.user||false,
             nodes: {},
             plugins: {},
+            resources: nodeModuleFiles.resources,
             icons: nodeModuleFiles.icons,
             examples: nodeModuleFiles.examples
         };

packages/node_modules/@node-red/registry/lib/registry.js

@@ -15,8 +15,8 @@
  **/
 
  //var UglifyJS = require("uglify-js");
-var path = require("path");
-var fs = require("fs");
+const path = require("path");
+const fs = require("fs");
 
 var library = require("./library");
 const {events} = require("@node-red/util")
@@ -680,7 +680,6 @@ function getNodeIconPath(module,icon) {
 
 function getNodeIcons() {
     var iconList = {};
-
     for (var module in moduleConfigs) {
         if (moduleConfigs.hasOwnProperty(module)) {
             if (moduleConfigs[module].icons) {
@@ -692,6 +691,21 @@ function getNodeIcons() {
     return iconList;
 }
 
+function getModuleResource(module, resourcePath) {
+    let mod = moduleConfigs[module];
+    if (mod && mod.resources) {
+        let basePath = mod.resources.path;
+        let fullPath = path.join(basePath,resourcePath);
+        if (/^\.\./.test(path.relative(basePath,fullPath))) {
+            return null;
+        }
+        if (fs.existsSync(fullPath)) {
+            return fullPath;
+        }
+    }
+    return null;
+}
+
 var registry = module.exports = {
     init: init,
     load: load,
@@ -722,6 +736,8 @@ var registry = module.exports = {
 
     getNodeIconPath: getNodeIconPath,
     getNodeIcons: getNodeIcons,
+    getModuleResource: getModuleResource,
+
     /**
      * Gets all of the node template configs
      * @return all of the node templates in a single string