Add ASCII Table support

Fixes #136

spring-shell-core/src/main/java/org/springframework/shell/result/ResultHandlerConfig.java

@@ -19,9 +19,11 @@ package org.springframework.shell.result;
 import javax.annotation.PostConstruct;
 
 import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Bean;
 import org.springframework.shell.ResultHandler;
+import org.springframework.shell.TerminalSizeAware;
 
 /**
  * Used for explicit configuration of {@link org.springframework.shell.ResultHandler}s.
@@ -47,4 +49,10 @@ public class ResultHandlerConfig {
 		iterableResultHandler().setDelegate(mainResultHandler());
 	}
 
+	@Bean
+	@ConditionalOnClass(TerminalSizeAware.class)
+	public TerminalSizeAwareResultHandler terminalSizeAwareResultHandler() {
+		return new TerminalSizeAwareResultHandler();
+	}
+
 }

spring-shell-core/src/main/java/org/springframework/shell/result/TerminalSizeAwareResultHandler.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2017 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.shell.result;
+
+import org.springframework.shell.ResultHandler;
+import org.springframework.shell.TerminalSizeAware;
+
+/**
+ * A ResultHandler that prints {@link TerminalSizeAware} according to the {@link org.jline.terminal.Terminal} size.
+ *
+ * @author Eric Bottard
+ */
+public class TerminalSizeAwareResultHandler extends TerminalAwareResultHandler implements ResultHandler<TerminalSizeAware> {
+
+
+	@Override
+	public void handleResult(TerminalSizeAware result) {
+		CharSequence toPrint = result.render(terminal.getWidth());
+		terminal.writer().println(toPrint);
+	}
+}