Initial commit

lib/utils.js

@@ -0,0 +1,83 @@
+'use strict';
+
+const fs = require('fs');
+const path = require('path');
+
+let controllerDir;
+let appName;
+
+/**
+ * returns application name
+ *
+ * The name of the application can be different and this function finds it out.
+ *
+ * @returns {string}
+ */
+ function getAppName() {
+    const parts = __dirname.replace(/\\/g, '/').split('/');
+    return parts[parts.length - 2].split('.')[0];
+}
+
+/**
+ * looks for js-controller home folder
+ *
+ * @param {boolean} isInstall
+ * @returns {string}
+ */
+function getControllerDir(isInstall) {
+    // Find the js-controller location
+    const possibilities = [
+        'yunkong2.js-controller',
+        'yunkong2.js-controller',
+    ];
+    /** @type {string} */
+    let controllerPath;
+    for (const pkg of possibilities) {
+        try {
+            const possiblePath = require.resolve(pkg);
+            if (fs.existsSync(possiblePath)) {
+                controllerPath = possiblePath;
+                break;
+            }
+        } catch (e) { /* not found */ }
+    }
+    if (controllerPath == null) {
+        if (!isInstall) {
+            console.log('Cannot find js-controller');
+            process.exit(10);
+        } else {
+            process.exit();
+        }
+    }
+    // we found the controller
+    return path.dirname(controllerPath);
+}
+
+/**
+ * reads controller base settings
+ *
+ * @alias getConfig
+ * @returns {object}
+ */
+ function getConfig() {
+    let configPath;
+    if (fs.existsSync(
+        configPath = path.join(controllerDir, 'conf', appName + '.json')
+    )) {
+        return JSON.parse(fs.readFileSync(configPath, 'utf8'));
+    } else if (fs.existsSync(
+        configPath = path.join(controllerDir, 'conf', + appName.toLowerCase() + '.json')
+    )) {
+        return JSON.parse(fs.readFileSync(configPath, 'utf8'));
+    } else {
+        throw new Error('Cannot find ' + controllerDir + '/conf/' + appName + '.json');
+    }
+}
+appName       = getAppName();
+controllerDir = getControllerDir(typeof process !== 'undefined' && process.argv && process.argv.indexOf('--install') !== -1);
+const adapter = require(path.join(controllerDir, 'lib/adapter.js'));
+
+exports.controllerDir = controllerDir;
+exports.getConfig =     getConfig;
+exports.Adapter =       adapter;
+exports.appName =       appName;