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// --- BEGIN COPYRIGHT BLOCK ---
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; version 2 of the License.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// (C) 2014 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
package com.netscape.cmstools.cli;
import org.apache.commons.cli.CommandLine;
/**
* @author Endi S. Dewata
*/
public class HelpCLI extends CLI {
MainCLI mainCLI;
public HelpCLI(MainCLI parent) {
super("help", "Help messages", parent);
mainCLI = parent;
}
public String getFullName() {
return name;
}
public void execute(String[] args) throws Exception {
CommandLine cmd = null;
try {
cmd = parser.parse(options, args);
} catch (Exception e) {
System.err.println("Error: " + e.getMessage());
printHelp();
System.exit(-1);
}
String[] cmdArgs = cmd.getArgs();
String command;
if (cmdArgs.length == 0) {
command = "pki";
} else {
command = "pki-" + cmdArgs[0];
}
while (true) {
// display man page for the command
ProcessBuilder pb = new ProcessBuilder(
"/bin/man",
command);
pb.inheritIO();
Process p = pb.start();
int rc = p.waitFor();
if (rc == 16) {
// man page not found, find the parent command
int i = command.lastIndexOf('-');
if (i >= 0) {
// parent command exists, try again
command = command.substring(0, i);
continue;
} else {
// parent command not found, stop
break;
}
} else {
// man page found or there's a different error, stop
break;
}
}
}
}
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