feat(hamster-core-bukkit): 添加指令

hamster-core-bukkit/src/main/java/cn/hamster3/mc/plugin/core/bukkit/command/core/ParentCoreCommand.java

@@ -16,7 +16,8 @@ public class ParentCoreCommand extends ParentCommand {
         addChildCommand(YamlCommand.INSTANCE);
         addChildCommand(InfoModeCommand.INSTANCE);
         addChildCommand(ReloadCommand.INSTANCE);
-        addChildCommand(RuntimeCommand.INSTANCE);
+        addChildCommand(MemoryCommand.INSTANCE);
+        addChildCommand(SystemCommand.INSTANCE);
     }
 
     @Override

hamster-core-bukkit/src/main/java/cn/hamster3/mc/plugin/core/bukkit/command/core/sub/EnvCommand.java

@@ -7,6 +7,7 @@ import org.jetbrains.annotations.NotNull;
 
 import java.util.Collections;
 import java.util.List;
+import java.util.stream.Collectors;
 
 public class EnvCommand extends ChildCommand {
     public static final EnvCommand INSTANCE = new EnvCommand();
@@ -46,6 +47,13 @@ public class EnvCommand extends ChildCommand {
 
     @Override
     public List<String> onTabComplete(@NotNull CommandSender sender, @NotNull Command command, @NotNull String alias, String[] args) {
+        if (args.length == 1) {
+            String lowerCase = args[0].toLowerCase();
+            return System.getenv().keySet()
+                    .stream()
+                    .filter(o -> o.startsWith(lowerCase))
+                    .collect(Collectors.toList());
+        }
         return Collections.emptyList();
     }
 }

hamster-core-bukkit/src/main/java/cn/hamster3/mc/plugin/core/bukkit/command/core/sub/GCCommand.java

@@ -31,7 +31,7 @@ public class GCCommand extends ChildCommand {
 
     @Override
     public @NotNull String getDescription() {
-        return "通知JVM进行一次垃圾回收";
+        return "通知 JVM 进行一次垃圾回收";
     }
 
     @Override

hamster-core-bukkit/src/main/java/cn/hamster3/mc/plugin/core/bukkit/command/core/sub/MemoryCommand.java

@@ -8,20 +8,20 @@ import org.jetbrains.annotations.NotNull;
 import java.util.Collections;
 import java.util.List;
 
-public class RuntimeCommand extends ChildCommand {
+public class MemoryCommand extends ChildCommand {
-    public static final RuntimeCommand INSTANCE = new RuntimeCommand();
+    public static final MemoryCommand INSTANCE = new MemoryCommand();
 
-    private RuntimeCommand() {
+    private MemoryCommand() {
     }
 
     @Override
     public @NotNull String getName() {
-        return "runtime";
+        return "memory";
     }
 
     @Override
     public @NotNull String getUsage() {
-        return "runtime";
+        return "memory";
     }
 
     @Override
@@ -31,15 +31,16 @@ public class RuntimeCommand extends ChildCommand {
 
     @Override
     public @NotNull String getDescription() {
-        return "查看JVM信息";
+        return "查看内存信息";
     }
 
     @Override
     public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, String[] args) {
         Runtime runtime = Runtime.getRuntime();
-        sender.sendMessage("空闲内存：" + runtime.freeMemory() / 1024.0);
+        sender.sendMessage(String.format("活跃内存：%.2f MB", (runtime.totalMemory() - runtime.freeMemory()) / 1024.0 / 1024.0));
-        sender.sendMessage("已用内存：" + runtime.totalMemory() / 1024.0);
+        sender.sendMessage(String.format("空闲内存：%.2f MB", runtime.freeMemory() / 1024.0 / 1024.0));
-        sender.sendMessage("最大可用内存：" + runtime.maxMemory() / 1024.0);
+        sender.sendMessage(String.format("占用系统内存：%.2f MB", runtime.totalMemory() / 1024.0 / 1024.0));
+        sender.sendMessage(String.format("最大可用内存：%.2f MB", runtime.maxMemory() / 1024.0 / 1024.0));
         return true;
     }
 

hamster-core-bukkit/src/main/java/cn/hamster3/mc/plugin/core/bukkit/command/core/sub/SystemCommand.java

@@ -0,0 +1,60 @@
+package cn.hamster3.mc.plugin.core.bukkit.command.core.sub;
+
+import cn.hamster3.mc.plugin.core.bukkit.command.ChildCommand;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class SystemCommand extends ChildCommand {
+    public static final SystemCommand INSTANCE = new SystemCommand();
+
+    private SystemCommand() {
+    }
+
+    @Override
+    public @NotNull String getName() {
+        return "system";
+    }
+
+    @Override
+    public @NotNull String getUsage() {
+        return "system";
+    }
+
+    @Override
+    public boolean hasPermission(@NotNull CommandSender sender) {
+        return true;
+    }
+
+    @Override
+    public @NotNull String getDescription() {
+        return "查看系统属性";
+    }
+
+    @Override
+    public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, String[] args) {
+        if (args.length < 1) {
+            sender.sendMessage(System.getProperties().toString());
+            return true;
+        }
+        sender.sendMessage(args[0] + "=" + System.getProperty(args[0], ""));
+        return true;
+    }
+
+    @Override
+    public List<String> onTabComplete(@NotNull CommandSender sender, @NotNull Command command, @NotNull String alias, String[] args) {
+        if (args.length == 1) {
+            String lowerCase = args[0].toLowerCase();
+            return System.getProperties().keySet()
+                    .stream()
+                    .map(Object::toString)
+                    .filter(o -> o.startsWith(lowerCase))
+                    .collect(Collectors.toList());
+        }
+        return Collections.emptyList();
+    }
+}