HBASE-2371. Fix 'list' command in shell

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@949549 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -364,6 +364,7 @@ Release 0.21.0 - Unreleased
                (Christo Wilson via Stack)
    HBASE-2621  Fix bad link to HFile documentation in javadoc
                (Jeff Hammerbacher via Todd Lipcon)
+   HBASE-2371  Fix 'list' command in shell (Alexey Kovyrin via Todd Lipcon)
 
   IMPROVEMENTS
    HBASE-1760  Cleanup TODOs in HTable

src/main/ruby/shell/commands/list.rb

@@ -23,14 +23,25 @@ module Shell
     class List < Command
       def help
         return <<-EOF
-          List all tables in hbase
+          List all tables in hbase. Optional regular expression parameter could
+          be used to filter the output. Examples:
+
+            hbase> list
+            hbase> list 'abc.*'
         EOF
       end
 
-      def command
-        format_simple_command do
-          admin.list
+      def command(regex = ".*")
+        now = Time.now
+        formatter.header([ "TABLE" ])
+
+        regex = /#{regex}/ unless regex.is_a?(Regexp)
+        list = admin.list.grep(regex)
+        list.each do |table|
+          formatter.row([ table ])
         end
+
+        formatter.footer(now, list.count)
       end
     end
   end