[wpiutil] Check MSVC Runtime (#7301)

wpiutil/src/main/java/edu/wpi/first/util/MsvcRuntimeException.java

@@ -0,0 +1,51 @@
+// Copyright (c) FIRST and other WPILib contributors.
+// Open Source Software; you can modify and/or share it under the terms of
+// the WPILib BSD license file in the root directory of this project.
+
+package edu.wpi.first.util;
+
+/** Exception thrown due to a bad MSVC Runtime. */
+public class MsvcRuntimeException extends RuntimeException {
+  private static final long serialVersionUID = -9155939328084105142L;
+
+  private static String generateMessage(
+      int foundMajor, int foundMinor, int expectedMajor, int expectedMinor, String runtimePath) {
+    String jvmLocation = ProcessHandle.current().info().command().orElse("Unknown");
+
+    StringBuffer builder = new StringBuffer(100);
+    builder
+        .append("Invalid MSVC Runtime Detected.\n")
+        .append(
+            String.format(
+                "Expected at least %d.%d, but found %d.%d\n",
+                expectedMajor, expectedMinor, foundMajor, foundMinor))
+        .append(String.format("JVM Location: %s\n", jvmLocation))
+        .append(String.format("Runtime DLL Location: %s\n", runtimePath))
+        .append("See https://wpilib.org/jvmruntime for more information\n");
+
+    return builder.toString();
+  }
+
+  /**
+   * Constructs a runtime exception.
+   *
+   * @param foundMajor found major
+   * @param foundMinor found minor
+   * @param expectedMajor expected major
+   * @param expectedMinor expected minor
+   * @param runtimePath path of runtime
+   */
+  public MsvcRuntimeException(
+      int foundMajor, int foundMinor, int expectedMajor, int expectedMinor, String runtimePath) {
+    super(generateMessage(foundMajor, foundMinor, expectedMajor, expectedMinor, runtimePath));
+  }
+
+  /**
+   * Constructs a runtime exception.
+   *
+   * @param msg message
+   */
+  public MsvcRuntimeException(String msg) {
+    super(msg);
+  }
+}

wpiutil/src/main/java/edu/wpi/first/util/WPIUtilJNI.java

@@ -63,6 +63,9 @@ public class WPIUtilJNI {
     libraryLoaded = true;
   }
 
+  /** Checks if the MSVC runtime is valid. Throws a runtime exception if not. */
+  public static native void checkMsvcRuntime();
+
   /**
    * Write the given string to stderr.
    *