Abstract detectUbuntuCodename

Author: minggangw

lib/native_loader.js

@@ -17,27 +17,10 @@
 const fs = require('fs');
 const path = require('path');
 const debug = require('debug')('rclnodejs');
+const { detectUbuntuCodename } = require('./utils');
 
 let nativeModule = null;
 
-/**
- * Detect Ubuntu codename from /etc/os-release
- * @returns {string|null} Ubuntu codename (e.g., 'noble', 'jammy') or null
- */
-function detectUbuntuCodename() {
-  if (process.platform !== 'linux') {
-    return null;
-  }
-
-  try {
-    const osRelease = fs.readFileSync('/etc/os-release', 'utf8');
-    const match = osRelease.match(/^VERSION_CODENAME=(.*)$/m);
-    return match ? match[1].trim() : null;
-  } catch {
-    return null;
-  }
-}
-
 // Simplified loader: only use prebuilt binaries with exact Ubuntu/ROS2/arch match
 // Note: Prebuilt binaries are only supported on Linux (Ubuntu) platform
 function customFallbackLoader() {

lib/utils.js

@@ -0,0 +1,37 @@
+// Copyright (c) 2025, The Robot Web Tools Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+const fs = require('fs');
+
+/**
+ * Detect Ubuntu codename from /etc/os-release
+ * @returns {string|null} Ubuntu codename (e.g., 'noble', 'jammy') or null if not detectable
+ */
+function detectUbuntuCodename() {
+  if (process.platform !== 'linux') {
+    return null;
+  }
+
+  try {
+    const osRelease = fs.readFileSync('/etc/os-release', 'utf8');
+    const match = osRelease.match(/^VERSION_CODENAME=(.*)$/m);
+    return match ? match[1].trim() : null;
+  } catch (e) {
+    return null;
+  }
+}
+
+module.exports = {
+  detectUbuntuCodename,
+};

scripts/install.js

@@ -15,20 +15,7 @@
 const fs = require('fs');
 const path = require('path');
 const { execSync } = require('child_process');
-
-function detectUbuntuCodename() {
-  if (process.platform !== 'linux') {
-    return null;
-  }
-
-  try {
-    const osRelease = fs.readFileSync('/etc/os-release', 'utf8');
-    const match = osRelease.match(/^VERSION_CODENAME=(.*)$/m);
-    return match ? match[1].trim() : null;
-  } catch {
-    return null;
-  }
-}
+const { detectUbuntuCodename } = require('../lib/utils');
 
 function getRosDistro() {
   return process.env.ROS_DISTRO || null;

scripts/tag_prebuilds.js

@@ -14,16 +14,7 @@
 
 const fs = require('fs');
 const path = require('path');
-
-function detectUbuntuCodename() {
-  try {
-    const osRelease = fs.readFileSync('/etc/os-release', 'utf8');
-    const match = osRelease.match(/^VERSION_CODENAME=(.*)$/m);
-    return match ? match[1].trim() : null;
-  } catch (e) {
-    return null;
-  }
-}
+const { detectUbuntuCodename } = require('../lib/utils');
 
 function tagPrebuilds() {
   const rosDistro = process.env.ROS_DISTRO;