/*
* TeleStax, Open Source Cloud Communications Copyright 2012.
* and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.mobicents.ss7.management.console;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.List;
import org.mobicents.ss7.management.console.Tree.Node;
/**
* @author amit bhayani
*
*/
public abstract class CommandHandlerWithHelp extends AbstractCommandHandler {
/**
* @param tree
*/
public CommandHandlerWithHelp(Tree tree, final int connectFlag) {
super(tree, connectFlag);
Node topNode = tree.getTopNode();
if (topNode.getChildren().size() > 0) {
// add --help only if there is atleast 1 child. Else for top command
// --help is any way added
addHelpToLastNode(topNode);
}
topNode.addChild("--help");
}
private void addHelpToLastNode(Node node) {
List<Node> children = node.getChildren();
if (children.size() == 0) {
// If this is last Node in the branch we add --help
node.addChild("--help");
} else {
for (Node n : children) {
addHelpToLastNode(n);
}
}
}
protected void printHelp(String commandLine, CommandContext ctx) {
String fileName = commandLine.trim().replaceAll(" --help", "");
fileName = "help/" + fileName.replace(" ", "_") + ".txt";
InputStream helpInput = SecurityActions.getClassLoader(CommandHandlerWithHelp.class).getResourceAsStream(fileName);
if (helpInput != null) {
BufferedReader reader = new BufferedReader(new InputStreamReader(helpInput));
try {
String helpLine = reader.readLine();
while (helpLine != null) {
ctx.printLine(helpLine);
helpLine = reader.readLine();
}
} catch (java.io.IOException e) {
ctx.printLine("Failed to read help/help.txt: " + e.getLocalizedMessage());
} finally {
try {
reader.close();
} catch (IOException e) {
}
}
} else {
ctx.printLine("Failed to locate command description " + fileName);
}
}
}