Add --wide option to show-connections

This adds the --wide (-w) option to show-connections, and also makes
it so both --wide and -w are acceptable for show-queue.  In addition,
the options for show-caches, show-connections, and show-queue have
all been documented accordingly (though, show-caches is a little
different in its behavior).

Change-Id: I6adee795763bda9533c3700216695945d8bb7af8

Documentation/cmd-show-caches.txt

@@ -25,6 +25,10 @@ OPTIONS
 	operating system, and other details about the environment
 	that Gerrit Code Review is running in.
 
+--width::
+-w::
+	Width of the output table.
+
 ACCESS
 ------
 Caller must be a member of the privileged 'Administrators' group,

Documentation/cmd-show-connections.txt

@@ -32,6 +32,11 @@ OPTIONS
 -n::
 	Show client hostnames as IP addresses instead of DNS hostname.
 
+--wide::
+-w::
+	Do not format the output to the terminal width (default of
+	80 columns).
+
 DISPLAY
 -------
 

Documentation/cmd-show-queue.txt

@@ -37,6 +37,13 @@ SCRIPTING
 ---------
 Intended for interactive use only.
 
+OPTIONS
+-------
+--wide::
+-w::
+	Do not format the output to the terminal width (default of
+	80 columns).
+
 DISPLAY
 -------
 

gerrit-sshd/src/main/java/com/google/gerrit/sshd/commands/ShowConnections.java

@@ -27,9 +27,11 @@ import com.google.inject.Inject;
 
 import org.apache.mina.core.service.IoAcceptor;
 import org.apache.mina.core.session.IoSession;
+import org.apache.sshd.server.Environment;
 import org.apache.sshd.server.session.ServerSession;
 import org.kohsuke.args4j.Option;
 
+import java.io.IOException;
 import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.net.SocketAddress;
@@ -47,9 +49,28 @@ final class ShowConnections extends SshCommand {
   @Option(name = "--numeric", aliases = {"-n"}, usage = "don't resolve names")
   private boolean numeric;
 
+  @Option(name = "--wide", aliases = {"-w"}, usage = "display without line width truncation")
+  private boolean wide;
+
   @Inject
   private SshDaemon daemon;
 
+  private int hostNameWidth;
+  private int columns = 80;
+
+  @Override
+  public void start(final Environment env) throws IOException {
+    String s = env.getEnv().get(Environment.ENV_COLUMNS);
+    if (s != null && !s.isEmpty()) {
+      try {
+        columns = Integer.parseInt(s);
+      } catch (NumberFormatException err) {
+        columns = 80;
+      }
+    }
+    super.start(env);
+ }
+
   @Override
   protected void run() throws Failure {
     final IoAcceptor acceptor = daemon.getIoAcceptor();
@@ -71,6 +92,8 @@ final class ShowConnections extends SshCommand {
       }
     });
 
+    hostNameWidth = wide ? Integer.MAX_VALUE : columns - 9 - 9 - 10 - 32;
+
     final long now = System.currentTimeMillis();
     stdout.print(String.format("%-8s %8s %8s   %-15s %s\n", //
         "Session", "Start", "Idle", "User", "Remote Host"));
@@ -83,7 +106,7 @@ final class ShowConnections extends SshCommand {
       final long start = io.getCreationTime();
       final long idle = now - io.getLastIoTime();
 
-      stdout.print(String.format("%8s %8s %8s  %-15.15s %.30s\n", //
+      stdout.print(String.format("%8s %8s %8s   %-15.15s %s\n", //
           id(sd), //
           time(now, start), //
           age(idle), //
@@ -160,6 +183,11 @@ final class ShowConnections extends SshCommand {
     if (host == null) {
       host = remoteAddress.toString();
     }
+
+    if (host.length() > hostNameWidth) {
+      return host.substring(0, hostNameWidth);
+    }
+
     return host;
   }
 }

gerrit-sshd/src/main/java/com/google/gerrit/sshd/commands/ShowQueue.java

@@ -42,7 +42,7 @@ import java.util.concurrent.TimeUnit;
 @AdminHighPriorityCommand
 @CommandMetaData(name = "show-queue", descr = "Display the background work queues, including replication")
 final class ShowQueue extends SshCommand {
-  @Option(name = "-w", usage = "display without line width truncation")
+  @Option(name = "--wide", aliases = {"-w"}, usage = "display without line width truncation")
   private boolean wide;
 
   @Inject