BUG-1041 cli proposal #1

[controller.git] / opendaylight / netconf / netconf-cli / src / main / java / org / opendaylight / controller / netconf / cli / writer / OutFormatter.java

diff --git a/opendaylight/netconf/netconf-cli/src/main/java/org/opendaylight/controller/netconf/cli/writer/OutFormatter.java b/opendaylight/netconf/netconf-cli/src/main/java/org/opendaylight/controller/netconf/cli/writer/OutFormatter.java
new file mode 100644 (file)
index 0000000..bed27b4
--- /dev/null
+++ b/opendaylight/netconf/netconf-cli/src/main/java/org/opendaylight/controller/netconf/cli/writer/OutFormatter.java
@@ -0,0 +1,66 @@
+/*
+ * 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.writer;
+
+public class OutFormatter {
+
+    public static final String INDENT_STEP = "  ";
+    public static final String COMPOSITE_OPEN_NODE = " {";
+    public static final String COMPOSITE_CLOSE_NODE = "}";
+    public static final String NEW_LINE = "\n";
+
+    int indentLevel = -1;
+    private String currentIndent = "";
+
+    public OutFormatter indent(final StringBuilder buffer) {
+        buffer.append(currentIndent);
+        return this;
+    }
+
+    public OutFormatter openComposite(final StringBuilder buffer) {
+        buffer.append(COMPOSITE_OPEN_NODE);
+        return this;
+    }
+
+    public OutFormatter closeCompositeWithIndent(final StringBuilder buffer) {
+        buffer.append(currentIndent);
+        buffer.append(COMPOSITE_CLOSE_NODE);
+        return this;
+    }
+
+    public OutFormatter newLine(final StringBuilder buffer) {
+        buffer.append(NEW_LINE);
+        return this;
+    }
+
+    private void prepareIndent() {
+        final StringBuilder output = new StringBuilder();
+        for (int i = 0; i < indentLevel; i++) {
+            output.append(INDENT_STEP);
+        }
+        currentIndent = output.toString();
+    }
+
+    public OutFormatter increaseIndent() {
+        indentLevel++;
+        prepareIndent();
+        return this;
+    }
+
+    public OutFormatter decreaseIndent() {
+        indentLevel--;
+        prepareIndent();
+        return this;
+    }
+
+    public OutFormatter addStringWithIndent(final StringBuilder buffer, final String value) {
+        indent(buffer);
+        buffer.append(value);
+        return this;
+    }
+}
\ No newline at end of file