diff options
Diffstat (limited to 'base/java-tools/src/com/netscape/cmstools/cli/HelpCLI.java')
-rw-r--r-- | base/java-tools/src/com/netscape/cmstools/cli/HelpCLI.java | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/base/java-tools/src/com/netscape/cmstools/cli/HelpCLI.java b/base/java-tools/src/com/netscape/cmstools/cli/HelpCLI.java new file mode 100644 index 000000000..c2468f597 --- /dev/null +++ b/base/java-tools/src/com/netscape/cmstools/cli/HelpCLI.java @@ -0,0 +1,91 @@ +// --- 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; + } + } + } +} |