2 files changed, 92 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;
+            }
+        }
+    }
+}
diff --git a/base/java-tools/src/com/netscape/cmstools/cli/MainCLI.java b/base/java-tools/src/com/netscape/cmstools/cli/MainCLI.java
index 3527238d2..2c2ce4d33 100644
--- a/base/java-tools/src/com/netscape/cmstools/cli/MainCLI.java
+++ b/base/java-tools/src/com/netscape/cmstools/cli/MainCLI.java
@@ -70,6 +70,7 @@ public class MainCLI extends CLI {
         addModule(new TPSCLI(this));
 
         addModule(new ClientCLI(this));
+        addModule(new HelpCLI(this));
 
         addModule(new ProxyCLI(new CertCLI(this), "ca"));
         addModule(new ProxyCLI(new GroupCLI(this), "ca"));