Utils: Add main classes to i2p.jar and router.jar

for simple command line access to utilities
2016-02-26 18:12:11 +00:00
parent b3f37db33f
commit d28f983c46
4 changed files with 142 additions and 1 deletions
--- a/core/java/src/net/i2p/util/CommandLine.java
+++ b/core/java/src/net/i2p/util/CommandLine.java
@ -0,0 +1,95 @@
+package net.i2p.util;
+
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import java.util.Locale;
+
+import net.i2p.CoreVersion;
+
+/**
+ * Simple command line access to various utilities.
+ * Not a public API. Subject to change.
+ * Apps and plugins should use specific classes.
+ *
+ * @since 0.9.25
+ */
+public class CommandLine {
+
+    protected static final List<String> CLASSES = Arrays.asList(new String[] {
+        "freenet.support.CPUInformation.CPUID",
+        "net.i2p.CoreVersion",
+        "net.i2p.client.naming.BlockfileNamingService",
+        "net.i2p.crypto.CryptoCheck",
+        "net.i2p.crypto.SU3File",
+        "net.i2p.crypto.TrustedUpdate",
+        "net.i2p.data.Base32",
+        "net.i2p.data.Base64",
+        "net.i2p.data.PrivateKeyFile",
+        "net.i2p.util.Addresses",
+        "net.i2p.util.EepGet",
+        "net.i2p.util.EepHead",
+        "net.i2p.util.FileUtil",
+        "net.i2p.util.FortunaRandomSource",
+        "net.i2p.util.NativeBigInteger",
+        "net.i2p.util.PartialEepGet",
+        "net.i2p.util.ShellCommand",
+        "net.i2p.util.SSLEepGet",
+        //"net.i2p.util.SystemVersion",
+        "net.i2p.util.TranslateReader",
+        "net.i2p.util.ZipFileComment"
+    });
+
+    protected CommandLine() {}
+
+    public static void main(String args[]) {
+        if (args.length > 0) {
+            exec(args, CLASSES);
+        }
+        usage();
+        System.exit(1);
+    }
+
+    /** will only return if command not found */
+    protected static void exec(String args[], List<String> classes) {
+        String cmd = args[0].toLowerCase(Locale.US);
+        for (String cls : classes) {
+            String ccmd = cls.substring(cls.lastIndexOf(".") + 1).toLowerCase(Locale.US);
+            if (cmd.equals(ccmd)) {
+                try {
+                    String[] cargs = new String[args.length - 1];
+                    System.arraycopy(args, 1, cargs, 0, args.length - 1);
+                    Class<?> c = Class.forName(cls, true, ClassLoader.getSystemClassLoader());
+                    Method main = c.getMethod("main", String[].class);
+                    main.invoke(null, (Object) cargs);
+                    System.exit(0);
+                } catch (Exception e) {
+                    e.printStackTrace();
+                    System.exit(1);
+                }
+            }
+        }
+    }
+
+    private static void usage() {
+        System.err.println("I2P Core version " + CoreVersion.VERSION + '\n' +
+                           "USAGE: java -jar /path/to/i2p.jar command [args]");
+        printCommands(CLASSES);
+    }
+
+    protected static void printCommands(List<String> classes) {
+        System.err.println("Available commands:");
+        List<String> cmds = new ArrayList<String>(classes.size());
+        for (String cls : classes) {
+            String ccmd = cls.substring(cls.lastIndexOf(".") + 1).toLowerCase(Locale.US);
+            cmds.add(ccmd);
+        }
+        Collections.sort(cmds);
+        for (String cmd : cmds) {
+            System.err.println("    " + cmd);
+        }
+        System.err.println("Enter command for detailed help.");
+    }
+}