fix grep command --trim-end support

core/src/main/java/com/taobao/arthas/core/command/basic1000/GrepCommand.java

@@ -10,8 +10,6 @@ import com.taobao.middleware.cli.annotations.Name;
 import com.taobao.middleware.cli.annotations.Option;
 import com.taobao.middleware.cli.annotations.Summary;
 
-import one.profiler.AsyncProfiler;
-
 /**
  * @see com.taobao.arthas.core.shell.command.internal.GrepHandler
  */
@@ -93,9 +91,9 @@ public class GrepCommand extends AnnotatedCommand {
         this.showLineNumber = showLineNumber;
     }
 
-    @Option(longName = "trim-end", flag = true)
+    @Option(longName = "trim-end", flag = false)
     @DefaultValue("true")
-    @Description("Remove whitespaces at the end of the line")
+    @Description("Remove whitespaces at the end of the line, default value true")
     public void setTrimEnd(boolean trimEnd) {
         this.trimEnd = trimEnd;
     }
@@ -170,11 +168,7 @@ public class GrepCommand extends AnnotatedCommand {
 
     @Override
     public void process(CommandProcess process) {
-        process.write("The grep command only for pipes. See 'grep --help'").write("\n");
-        
-        String libPath = "/private/tmp/async-profiler-1.6-macos-x64/build/libasyncProfiler.so";
-        AsyncProfiler instance = AsyncProfiler.getInstance(libPath);
-        process.write(instance.toString());
+        process.write("The grep command only for pipes. See 'grep --help'\n");
         process.end();
     }
 }

core/src/main/java/com/taobao/arthas/core/shell/command/internal/GrepHandler.java

@@ -46,12 +46,16 @@ public class GrepHandler extends StdoutHandler {
      */
     private final Integer maxCount;
 
+    private static CLI cli = null;
+
     public static StdoutHandler inject(List<CliToken> tokens) {
         List<String> args = StdoutHandler.parseArgs(tokens, NAME);
 
         GrepCommand grepCommand = new GrepCommand();
-        CLI cli = CLIConfigurator.define(GrepCommand.class);
-        CommandLine commandLine = cli.parse(args);
+        if (cli == null) {
+            cli = CLIConfigurator.define(GrepCommand.class);
+        }
+        CommandLine commandLine = cli.parse(args, true);
 
         try {
             CLIConfigurator.inject(commandLine, grepCommand);

core/src/test/java/com/taobao/arthas/core/command/basic1000/GrepCommandTest.java

@@ -0,0 +1,69 @@
+package com.taobao.arthas.core.command.basic1000;
+
+import java.util.Arrays;
+import java.util.List;
+
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import com.taobao.middleware.cli.CLI;
+import com.taobao.middleware.cli.CommandLine;
+import com.taobao.middleware.cli.annotations.CLIConfigurator;
+
+/**
+ * 
+ * @author hengyunabc 2019-10-31
+ *
+ */
+public class GrepCommandTest {
+
+    private static CLI cli = null;
+
+    @Before
+    public void before() {
+        cli = CLIConfigurator.define(GrepCommand.class);
+    }
+
+    @Test
+    public void test() {
+        List<String> args = Arrays.asList("-v", "ppp");
+        GrepCommand grepCommand = new GrepCommand();
+        CommandLine commandLine = cli.parse(args, true);
+
+        try {
+            CLIConfigurator.inject(commandLine, grepCommand);
+        } catch (Throwable e) {
+            throw new RuntimeException(e);
+        }
+        Assert.assertTrue(grepCommand.isInvertMatch());
+    }
+
+    @Test
+    public void test2() {
+        List<String> args = Arrays.asList("--before-context=6", "ppp");
+        GrepCommand grepCommand = new GrepCommand();
+        CommandLine commandLine = cli.parse(args, true);
+
+        try {
+            CLIConfigurator.inject(commandLine, grepCommand);
+        } catch (Throwable e) {
+            throw new RuntimeException(e);
+        }
+        Assert.assertEquals(6, grepCommand.getBeforeLines());
+    }
+
+    @Test
+    public void test3() {
+        List<String> args = Arrays.asList("--trim-end=false", "ppp");
+        GrepCommand grepCommand = new GrepCommand();
+        CommandLine commandLine = cli.parse(args, true);
+
+        try {
+            CLIConfigurator.inject(commandLine, grepCommand);
+        } catch (Throwable e) {
+            throw new RuntimeException(e);
+        }
+        Assert.assertFalse(grepCommand.isTrimEnd());
+    }
+}