Intermediate merge step

lib/pry/commands/ls.rb

@@ -1,8 +1,30 @@
 class Pry
-  class Command::Ls < Pry::ClassCommand
+ module Helpers
+    module Formatting
+      def self.tablify(things, screen_width)
+        maximum_width = things.map{|t| Pry::Helpers::Text.strip_color(t).length}.max + Pry.config.ls.separator.length
+        maximum_width = screen_width if maximum_width > screen_width
+        columns = screen_width / maximum_width
+
+        things.each_slice(columns).map do |slice|
+          slice.map do |s|
+            padding_width = maximum_width - Pry::Helpers::Text.strip_color(s).length
+            padding = Pry.config.ls.separator.ljust(padding_width, Pry.config.ls.separator)
+            s + padding
+          end.join("")
+        end.join("\n")
+      end
+    end
+  end
+ 
+ class Command::Ls < Pry::ClassCommand
     match 'ls'
     group 'Context'
     description 'Show the list of vars and methods in the current scope.'
+
+  Pry::Commands.create_command "ls" do
+    group "Context"
+    description "Show the list of vars and methods in the current scope."
     command_options :shellwords => false, :interpolate => false
 
     def options(opt)
@@ -303,17 +325,7 @@ class Pry
       end
 
       screen_width = (TerminalInfo.screen_size || [25, 80])[1]
-      maximum_width = things.map{|t| Pry::Helpers::Text.strip_color(t).length}.max + Pry.config.ls.separator.length
-      maximum_width = screen_width if maximum_width > screen_width
-      columns = screen_width / maximum_width
-
-      things.each_slice(columns).map do |slice|
-        slice.map do |s|
-          padding_width = maximum_width - Pry::Helpers::Text.strip_color(s).length
-          padding = Pry.config.ls.separator.ljust(padding_width, Pry.config.ls.separator)
-          s + padding
-        end.join("")
-      end.join("\n")
+      Pry::Helpers::Formatting.tablify(things, screen_width)
     end
 
     # Color output based on config.ls.*_color

spec/commands/ls_spec.rb

@@ -28,6 +28,48 @@ describe "ls" do
     end
   end
 
+  describe 'formatting - should order downward and wrap to columns' do
+    FAKE_COLUMNS = 62
+    def try_round_trip(text)
+      text.strip!
+      things = text.split(/\s+/)
+      actual = Pry::Helpers::Formatting.tablify(things, FAKE_COLUMNS)
+      if actual != text
+        actual.strip.should == text
+        puts text, 'vs.', actual
+      end
+    end
+
+    it 'should handle the basic case' do
+      try_round_trip(<<-EOT)
+aadd            ddasffssdad  sdsaadaasd      ssfasaafssd
+adassdfffaasds  f            sdsfasddasfds   ssssdaa
+assfsafsfsds    fsasa        ssdsssafsdasdf
+      EOT
+    end
+
+    it 'should handle... another basic case' do
+      try_round_trip(<<-EOT)
+aaad            dasaasffaasf    fdasfdfss       safdfdddsasd
+aaadfasassdfff  ddadadassasdf   fddsasadfssdss  sasf
+aaddaafaf       dddasaaaaaa     fdsasad         sddsa
+aas             dfsddffdddsdfd  ff              sddsfsaa
+adasadfaaffds   dsfafdsfdfssda  ffadsfafsaafa   ss
+asddaadaaadfdd  dssdss          ffssfsfafaadss  ssas
+asdsdaa         faadf           fsddfff         ssdfssff
+asfadsssaaad    fasfaafdssd     s
+      EOT
+    end
+
+    it 'should handle empty input' do
+      try_round_trip('')
+    end
+
+    it 'should handle one-token input' do
+      try_round_trip('asdf')
+    end
+  end
+
   describe "help" do
     it 'should show help with -h' do
       pry_eval("ls -h").should =~ /Usage: ls/