1 files changed, 101 insertions, 0 deletions
diff --git a/debug/org.eclipse.cdt.debug.dap/src/org/eclipse/cdt/debug/dap/InitializeLaunchConfigurations.java b/debug/org.eclipse.cdt.debug.dap/src/org/eclipse/cdt/debug/dap/InitializeLaunchConfigurations.java
new file mode 100644
index 00000000000..7416d431a05
--- /dev/null
+++ b/debug/org.eclipse.cdt.debug.dap/src/org/eclipse/cdt/debug/dap/InitializeLaunchConfigurations.java
@@ -0,0 +1,101 @@
+/*******************************************************************************
+ * Copyright (c) 2016, 2019 Red Hat Inc. and others.
+ *
+ * This program and the accompanying materials are made
+ * available under the terms of the Eclipse Public License 2.0
+ * which is available at https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *   Mickael Istria (Red Hat Inc.) - initial implementation
+ *******************************************************************************/
+package org.eclipse.cdt.debug.dap;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.Optional;
+
+import org.eclipse.core.runtime.Assert;
+import org.eclipse.core.runtime.IPath;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Path;
+import org.eclipse.core.runtime.Platform;
+import org.eclipse.core.runtime.Status;
+
+public class InitializeLaunchConfigurations {
+
+	private boolean alreadyWarned;
+	private Runnable warnNodeJSMissing;
+
+	public InitializeLaunchConfigurations(Runnable warnNodeJSMissing) {
+		Assert.isNotNull(warnNodeJSMissing);
+		this.warnNodeJSMissing = warnNodeJSMissing;
+	}
+
+	public Optional<String> getVSCodeLocation(String appendPathSuffix) {
+		String res = null;
+		if (Platform.getOS().equals(Platform.OS_LINUX)) {
+			res = "/usr/share/code";
+		} else if (Platform.getOS().equals(Platform.OS_WIN32)) {
+			res = "C:/Program Files (x86)/Microsoft VS Code";
+		} else if (Platform.getOS().equals(Platform.OS_MACOSX)) {
+			res = "/Applications/Visual Studio Code.app";
+
+			IPath path = new Path(appendPathSuffix);
+			// resources/ maps to Contents/Resources on macOS
+			if (path.segmentCount() > 1 && path.segment(0).equals("resources")) {
+				path = path.removeFirstSegments(1);
+				appendPathSuffix = new Path("/Contents/Resources").append(path).toOSString();
+			}
+		}
+		if (res != null && new File(res).isDirectory()) {
+			if (res.contains(" ") && Platform.getOS().equals(Platform.OS_WIN32)) {
+				return Optional.of("\"" + res + appendPathSuffix + "\"");
+			}
+			return Optional.of(res + appendPathSuffix);
+		}
+		return Optional.empty();
+	}
+
+	public Optional<String> getNodeJsLocation() {
+		{
+			String nodeJsLocation = System.getProperty("org.eclipse.wildwebdeveloper.nodeJSLocation");
+			if (nodeJsLocation != null && Files.exists(Paths.get(nodeJsLocation))) {
+				return Optional.of(nodeJsLocation);
+			}
+		}
+
+		String res = "/path/to/node";
+		String[] command = new String[] { "/bin/bash", "-c", "which node" };
+		if (Platform.getOS().equals(Platform.OS_WIN32)) {
+			command = new String[] { "cmd", "/c", "where node" };
+		}
+
+		try (BufferedReader reader = new BufferedReader(
+				new InputStreamReader(Runtime.getRuntime().exec(command).getInputStream()));) {
+			res = reader.readLine();
+		} catch (IOException e) {
+			Activator.getDefault().getLog().log(
+					new Status(IStatus.ERROR, Activator.getDefault().getBundle().getSymbolicName(), e.getMessage(), e));
+		}
+
+		// Try default install path as last resort
+		if (res == null && Platform.getOS().equals(Platform.OS_MACOSX)) {
+			res = "/usr/local/bin/node";
+		}
+
+		if (res != null && Files.exists(Paths.get(res))) {
+			return Optional.of(res);
+		} else if (!alreadyWarned) {
+			warnNodeJSMissing.run();
+			alreadyWarned = true;
+		}
+		return Optional.empty();
+	}
+
+}