make it possible to filter tasks by tag, both from within the lib and…

… the cmd line tool

bin/things

@@ -4,10 +4,10 @@ require "optparse"
 require 'things'
 
 options = { :tasks => { :completed => false } }
+
 opts = OptionParser.new do |opts|
   opts.separator ''
   opts.separator 'Options:'
-
   opts.banner = "Usage: things [options] today|next|inbox|someday|logbook|trash"
 
   def opts.show_usage
@@ -20,8 +20,9 @@ opts = OptionParser.new do |opts|
   end
 
   opts.on("-c", "--completed", 'Shows only completed tasks') { options[:tasks] = { :completed => true } }
-  opts.on("-a", "--all", 'Shows all tasks in the focus') { |f| options[:tasks] = { } }
-
+  opts.on("-a", "--all", 'Shows all tasks in the focus') { options[:tasks].delete(:completed) }
+  opts.on("-t TAG", "--tag TAG", 'Filter tasks by tag') { |f| options[:tasks][:tag] = f }
+
   opts.on_tail("-h", "--help", "Shows this help message") { opts.show_usage }
   opts.on_tail("-v", "--version", "Shows version") do
     puts Things::Version::STRING

lib/things/focus.rb

@@ -58,6 +58,10 @@ def filter_tasks!(options)
           end
         end
       end
+
+      if tag = options[:tag]
+        @tasks = @tasks.select { |t| t.tag?(tag) }
+      end
     end
   end
 end

test/test_focus.rb

@@ -95,6 +95,11 @@ def setup
     assert_equal 0, tasks.select(&:completed?).length
   end
 
+  test "should filter tasks by tag" do
+    tasks = @things.focus(:next).tasks(:tag => 'home')
+    assert tasks.all? { |e| e.tag?('home') }
+  end
+
   test "should not include projects when listing tasks" do
     with_children = @things.focus(:next).tasks.select(&:children?)
     assert_equal 0, with_children.length