Don't build the webside on Windows/Mac

It seems to stall on Mac, and unlike Windows, I don't have access to a
machine to debug it :/.

.github/workflows/main-ci.yml

@@ -58,13 +58,13 @@ jobs:
         find projects/forge/build/libs projects/fabric/build/libs -type f -regex '.*[0-9.]+\(-SNAPSHOT\)?\.jar$' -exec bash -c 'cp {} "jars/$(basename {} .jar)-$(git rev-parse HEAD).jar"' \;
 
     - name: 📤 Upload Jar
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: CC-Tweaked
         path: ./jars
 
     - name: 📤 Upload coverage
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
 
   build-core:
     strategy:
@@ -81,24 +81,28 @@ jobs:
     runs-on: ${{ matrix.uses }}
 
     steps:
-    - name: Clone repository
+    - name: 📥 Clone repository
       uses: actions/checkout@v4
 
-    - name: Set up Java
+    - name: 📥 Set up Java
       uses: actions/setup-java@v4
       with:
         java-version: 17
         distribution: 'temurin'
 
-    - name: Setup Gradle
+    - name: 📥 Setup Gradle
       uses: gradle/actions/setup-gradle@v3
       with:
         cache-read-only: ${{ !startsWith(github.ref, 'refs/heads/mc-') }}
 
-    - name: Run tests
+    - name: ⚒️ Build
+      run: |
+        ./gradlew --configure-on-demand :core:assemble
+
+    - name: 🧪 Run tests
       run: |
         ./gradlew --configure-on-demand :core:test
 
-    - name: Parse test reports
+    - name: 🧪 Parse test reports
       run: python3 ./tools/parse-reports.py
       if: ${{ failure() }}

CONTRIBUTING.md

@@ -29,9 +29,9 @@ ## Setting up a development environment
 In order to develop CC: Tweaked, you'll need to download the source code and then run it.
 
  - Make sure you've got the following software installed:
-   - Java Development Kit (JDK) installed. This can be downloaded from [Adoptium].
+   - Java Development Kit (JDK). This can be downloaded from [Adoptium].
    - [Git](https://git-scm.com/).
-   - If you want to work on documentation, [NodeJS][node].
+   - [NodeJS][node].
 
  - Download CC: Tweaked's source code:
    ```

buildSrc/src/main/kotlin/cc/tweaked/gradle/Node.kt

@@ -46,7 +46,7 @@ abstract class NpmInstall : DefaultTask() {
     @TaskAction
     fun install() {
         project.exec {
-            commandLine("npm", "ci")
+            commandLine(ProcessHelpers.getExecutable("npm"), "ci")
             workingDir = projectRoot.get().asFile
         }
     }
@@ -59,6 +59,6 @@ fun install() {
 abstract class NpxExecToDir : ExecToDir() {
     init {
         dependsOn(NpmInstall.TASK_NAME)
-        executable = "npx"
+        executable = ProcessHelpers.getExecutable("npx")
     }
 }

buildSrc/src/main/kotlin/cc/tweaked/gradle/ProcessHelpers.kt

@@ -9,6 +9,7 @@
 import java.io.BufferedReader
 import java.io.File
 import java.io.InputStreamReader
+import java.nio.charset.StandardCharsets
 
 internal object ProcessHelpers {
     fun startProcess(vararg command: String): Process {
@@ -34,7 +35,7 @@ fun captureLines(vararg command: String): List<String> {
         val process = startProcess(*command)
         process.outputStream.close()
 
-        val out = BufferedReader(InputStreamReader(process.inputStream)).use { reader ->
+        val out = BufferedReader(InputStreamReader(process.inputStream, StandardCharsets.UTF_8)).use { reader ->
             reader.lines().filter { it.isNotEmpty() }.toList()
         }
         ProcessGroovyMethods.closeStreams(process)
@@ -46,6 +47,28 @@ fun onPath(name: String): Boolean {
         val path = System.getenv("PATH") ?: return false
         return path.splitToSequence(File.pathSeparator).any { File(it, name).exists() }
     }
+
+    /**
+     * Search for an executable on the `PATH` if required.
+     *
+     * [Process]/[ProcessBuilder] does not handle all executable file extensions on Windows (such as `.com). When on
+     * Windows, this function searches `PATH` and `PATHEXT` for an executable matching [name].
+     */
+    fun getExecutable(name: String): String {
+        if (!System.getProperty("os.name").lowercase().contains("windows")) return name
+
+        val path = (System.getenv("PATH") ?: return name).split(File.pathSeparator)
+        val pathExt = (System.getenv("PATHEXT") ?: return name).split(File.pathSeparator)
+
+        for (pathEntry in path) {
+            for (ext in pathExt) {
+                val resolved = File(pathEntry, name + ext)
+                if (resolved.exists()) return resolved.getAbsolutePath()
+            }
+        }
+
+        return name
+    }
 }
 
 internal fun Process.waitForOrThrow(message: String) {

gradle.properties

@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: MPL-2.0
 
-org.gradle.jvmargs=-Xmx3G
+org.gradle.jvmargs=-Xmx3G -Dfile.encoding=UTF-8
 org.gradle.parallel=true
 
 kotlin.stdlib.default.dependency=false

projects/core/src/main/java/dan200/computercraft/core/apis/http/websocket/WebsocketHandle.java

@@ -29,7 +29,7 @@
  * @see dan200.computercraft.core.apis.HTTPAPI#websocket On how to open a websocket.
  */
 public class WebsocketHandle {
-    private static final CharsetDecoder DECODER = StandardCharsets.UTF_8.newDecoder().onMalformedInput(CodingErrorAction.REPLACE);
+    private static final ThreadLocal<CharsetDecoder> DECODER = ThreadLocal.withInitial(() -> StandardCharsets.UTF_8.newDecoder().onMalformedInput(CodingErrorAction.REPLACE));
 
     private final IAPIEnvironment environment;
     private final String address;
@@ -87,7 +87,7 @@ public final void send(Coerced<ByteBuffer> message, Optional<Boolean> binary) th
             websocket.sendBinary(text);
         } else {
             try {
-                websocket.sendText(DECODER.decode(text).toString());
+                websocket.sendText(DECODER.get().decode(text).toString());
             } catch (CharacterCodingException e) {
                 // This shouldn't happen, but worth mentioning.
                 throw new LuaException("Message is not valid UTF8");

projects/core/src/main/resources/data/computercraft/lua/rom/apis/settings.lua

@@ -213,16 +213,16 @@ end
 -- Existing settings will be merged with any pre-existing ones. Conflicting
 -- entries will be overwritten, but any others will be preserved.
 --
--- @tparam[opt] string sPath The file to load from, defaulting to `.settings`.
+-- @tparam[opt=".settings"] string path The file to load from.
 -- @treturn boolean Whether settings were successfully read from this
 -- file. Reasons for failure may include the file not existing or being
 -- corrupted.
 --
 -- @see settings.save
--- @changed 1.87.0 `sPath` is now optional.
+-- @changed 1.87.0 `path` is now optional.
-function load(sPath)
+function load(path)
-    expect(1, sPath, "string", "nil")
+    expect(1, path, "string", "nil")
-    local file = fs.open(sPath or ".settings", "r")
+    local file = fs.open(path or ".settings", "r")
     if not file then
         return false
     end
@@ -255,14 +255,14 @@ end
 -- This will entirely overwrite the pre-existing file. Settings defined in the
 -- file, but not currently loaded will be removed.
 --
--- @tparam[opt] string sPath The path to save settings to, defaulting to `.settings`.
+-- @tparam[opt=".settings"] string path The path to save settings to.
 -- @treturn boolean If the settings were successfully saved.
 --
 -- @see settings.load
--- @changed 1.87.0 `sPath` is now optional.
+-- @changed 1.87.0 `path` is now optional.
-function save(sPath)
+function save(path)
-    expect(1, sPath, "string", "nil")
+    expect(1, path, "string", "nil")
-    local file = fs.open(sPath or ".settings", "w")
+    local file = fs.open(path or ".settings", "w")
     if not file then
         return false
     end

projects/web/src/builder/java/cc/tweaked/web/builder/TransformingClassLoader.java

@@ -68,6 +68,10 @@ public void remapClass(String from, String to) {
     }
 
     private @Nullable Path findUnmappedFile(String name) {
+        // For some odd reason, we try to resolve the generated lambda classes. This includes classes called
+        // things like <linit>lambda, which is an invalid path on Windows. Detect those, and abort early.
+        if (name.indexOf("<") >= 0) return null;
+
         return classpath.stream().map(x -> x.resolve(name)).filter(Files::exists).findFirst().orElse(null);
     }