BUG-1041 cli proposal #1

[controller.git] / opendaylight / netconf / netconf-cli / src / main / java / org / opendaylight / controller / netconf / cli / reader / impl / DecisionReader.java

diff --git a/opendaylight/netconf/netconf-cli/src/main/java/org/opendaylight/controller/netconf/cli/reader/impl/DecisionReader.java b/opendaylight/netconf/netconf-cli/src/main/java/org/opendaylight/controller/netconf/cli/reader/impl/DecisionReader.java
new file mode 100644 (file)
index 0000000..b1e9a43
--- /dev/null
+++ b/opendaylight/netconf/netconf-cli/src/main/java/org/opendaylight/controller/netconf/cli/reader/impl/DecisionReader.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.controller.netconf.cli.reader.impl;
+
+import static org.opendaylight.controller.netconf.cli.io.IOUtil.SKIP;
+
+import com.google.common.base.Optional;
+import java.io.IOException;
+import jline.console.completer.AggregateCompleter;
+import jline.console.completer.Completer;
+import jline.console.completer.StringsCompleter;
+import jline.internal.Log;
+import org.opendaylight.controller.netconf.cli.io.ConsoleContext;
+import org.opendaylight.controller.netconf.cli.io.ConsoleIO;
+import org.opendaylight.controller.netconf.cli.io.IOUtil;
+import org.opendaylight.controller.netconf.cli.reader.ReadingException;
+
+public class DecisionReader {
+
+    private static final String YES = "Y";
+    private static final String NO = "N";
+    public static final Completer YES_NO_COMPLETER = new StringsCompleter(YES, NO);
+
+    public Optional<Boolean> read(final ConsoleIO console, final String questionMessageBlueprint,
+            final Object... questionMessageArgs) throws IOException, ReadingException {
+        final ConsoleContext ctx = getContext();
+        console.enterContext(ctx);
+        try {
+            console.formatLn(questionMessageBlueprint, questionMessageArgs);
+            final String rawValue = console.read();
+            if (YES.equals(rawValue.toUpperCase())) {
+                return Optional.of(Boolean.TRUE);
+            } else if (NO.equals(rawValue.toUpperCase())) {
+                return Optional.of(Boolean.FALSE);
+            } else if (SKIP.equals(rawValue)) {
+                return Optional.absent();
+            } else {
+                final String message = String.format("Incorrect possibility (%s) was selected", rawValue);
+                Log.error(message);
+                throw new ReadingException(message);
+            }
+        } finally {
+            console.leaveContext();
+        }
+    }
+
+    private static ConsoleContext getContext() {
+        return new ConsoleContext() {
+
+            @Override
+            public Optional<String> getPrompt() {
+                return Optional.absent();
+            }
+
+            @Override
+            public Completer getCompleter() {
+                return new AggregateCompleter(YES_NO_COMPLETER, new StringsCompleter(IOUtil.SKIP));
+            }
+
+        };
+    }
+
+}