start getting rid of CCD

java/net/i2p/router/WindowsAppUtil.java

@@ -0,0 +1,156 @@
+package net.i2p.router;
+
+import java.io.File;
+import net.i2p.util.Log;
+
+public class WindowsAppUtil extends WindowsServiceUtil {
+  final Log logger;
+  public WindowsAppUtil(RouterContext ctx) {
+    super();
+    logger = ctx.logManager().getLog(WindowsAppUtil.class);
+  }
+  protected File selectHome() { // throws Exception {
+    String path_override = System.getenv("I2P_CONFIG");
+    if (path_override != null) {
+      File path = new File(path_override);
+      if (path != null && path.exists()) {
+        if (path.isDirectory())
+          return path.getAbsoluteFile();
+        else
+          throw new RuntimeException("I2P_CONFIG is not a directory: " + path);
+      }
+    }
+    File i2p = appImageHome();
+    logger.info("Checking for signs of life in I2P_CONFIG directory: " + i2p);
+    return i2p;
+  }
+
+  protected File selectProgramFile() {
+    String path_override = System.getenv("I2P");
+    if (path_override != null) {
+      File path = new File(path_override);
+      if (path.exists()) {
+        if (path.isDirectory())
+          return path.getAbsoluteFile();
+        else
+          throw new RuntimeException("I2P is not a directory: " + path);
+      }
+    }
+    File i2p = appImageHome();
+    logger.info("Checking for signs of life in I2P directory: " + i2p);
+    return i2p;
+  }
+
+  /**
+   * get the path to the java home, for jpackage this is related to the
+   * executable itself, which is handy to know. It's a directory called runtime,
+   * relative to the root of the app-image on each platform:
+   *
+   * Windows - Root of appimage is 1 directory above directory named runtime
+   *     ./runtime
+   *
+   * Linux - Root of appimage is 2 directories above directory named runtime
+   *     ./lib/runtime
+   *
+   * Mac OSX - Unknown for now
+   *
+   * @return
+   */
+  protected File javaHome() {
+    File jrehome = new File(System.getProperty("java.home"));
+    if (jrehome != null) {
+      if (jrehome.exists()) {
+        return jrehome;
+      }
+    }
+    return null;
+  }
+
+  /**
+   * get the path to the root of the app-image root by getting the path to
+   * java.home and the OS, and traversing up to the app-image root based on that
+   * information.
+   *
+   * @return the app-image root
+   */
+  protected File appImageHome() {
+    File jreHome = javaHome();
+    if (jreHome != null) {
+      switch (osName()) {
+      case "windows":
+        return jreHome.getAbsoluteFile().getParentFile();
+      case "mac":
+      case "linux":
+        return jreHome.getAbsoluteFile().getParentFile().getParentFile();
+      }
+    }
+    return null;
+  }
+
+  /**
+   * get the path to the binary of the app-image root by getting the path to
+   * java.home and the OS, and traversing up to the app-image root based on that
+   * information, then getting the binary path on a per-platform basis. The path
+   * returned will be relative to the root.
+   *
+   * @return the app-image root
+   */
+  protected String appImageExe() {
+    File aih = appImageHome();
+    if (aih != null) {
+      switch (osName()) {
+      case "windows":
+        return "I2P.exe";
+      case "mac":
+      case "linux":
+        return "./bin/I2P";
+      }
+    }
+    return null;
+  }
+
+  /**
+   * get the path to the default config of the app-image by getting the path to
+   * java.home and the OS, and traversing up to the app-image root based on that
+   * information, then appending the config directory to the end onn a
+   * per-platform basis
+   *
+   * @return the app-image root
+   */
+  protected File appImageConfig() {
+    File aih = appImageHome();
+    if (aih == null) {
+      return null;
+    }
+    String osName = osName();
+    switch (osName) {
+    case "windows":
+      File winConfigDir = new File(aih, "config");
+      if (winConfigDir != null) {
+        if (winConfigDir.exists()) {
+          return winConfigDir;
+        }
+      }
+    case "mac":
+    case "linux":
+      File linConfigDir = new File(aih, "lib/config");
+      if (linConfigDir != null) {
+        if (linConfigDir.exists()) {
+          return linConfigDir;
+        }
+      }
+    }
+    return null;
+  }
+
+  protected String routerConfig() {
+    File appImageHomeDir = selectHome();
+    File routerConf = new File(appImageHomeDir, "router.config");
+    if (routerConf != null) {
+      if (routerConf.exists()) {
+        return routerConf.getAbsolutePath();
+      }
+    }
+    return null;
+  }
+}