Add support for filters

In your layout files, you can now use the "filters" key in window items,
like so:

    windows:
      - name: my-new-window
        root: ~/Code/foo
        filters:
          before: "sudo bash"
          after:
            - "echo 'Let’s use use ruby-1.9.2 for eachs plit'"
            - "rvm use 1.9.2"
        splits:
          [splits list]

README.md

@@ -31,9 +31,9 @@ You can wrap your entire layout file in a `session` and Teamocil will rename the
 #### Example
 
     session:
-	  name: my-awesome-session
-	  windows:
-		[windows list]
+      name: my-awesome-session
+      windows:
+       [windows list]
 
 ### Windows
 
@@ -43,17 +43,24 @@ If you are not using a top-level `session` key, then the first key of your layou
 
 * `name` (the name that will appear in `tmux` statusbar)
 * `root` (the directory in which every split will be created)
+* `filters` (a hash of `before` and `after` commands to run for each split)
 * `splits` (an array of split items)
 
 #### Example
 
-	windows:
+    windows:
       - name: my-first-window
         root: ~/Projects/foo-www
+        filters:
+          before:
+            - "echo 'Let’s use ruby-1.9.2 for each split in this window.'"
+            - "rvm use 1.9.2"
         splits:
           [splits list]
       - name: my-second-window
         root: ~/Projects/foo-api
+        filters:
+          after: "rvm use 1.9.2"
         splits:
           [splits list]
       - name: my-third-window
@@ -74,9 +81,12 @@ Every window must define an array of splits that will be created within it. A ve
 
 #### Example
 
-	windows:
+    windows:
       - name: my-first-window
         root: ~/Projects/foo-www
+        filters:
+          before: "rvm use 1.9.2"
+          after: "echo 'I am done initializing this split.'"
         splits:
           - cmd: "git status"
           - cmd: "bundle exec rails server --port 4000"

lib/teamocil.rb

@@ -1,5 +1,5 @@
 module Teamocil
-  VERSION = '0.1.9'
+  VERSION = '0.1.10'
   autoload :Layout, "teamocil/layout"
   autoload :CLI,    "teamocil/cli"
 end

lib/teamocil/layout.rb

@@ -30,12 +30,21 @@ module Teamocil
 
       windows.each_with_index do |window, window_index|
 
+        # Create a new window unless we used the `--here` option
         if @options.include?(:here) and window_index == 0
           output << "tmux rename-window \"#{window["name"]}\""
         else
           output << "tmux new-window -n \"#{window["name"]}\""
         end
 
+        # Make sure our filters return arrays
+        window["filters"] ||= {}
+        window["filters"]["before"] ||= []
+        window["filters"]["after"] ||= []
+        window["filters"]["before"] = [window["filters"]["before"]] unless window["filters"]["before"].is_a? Array
+        window["filters"]["after"] = [window["filters"]["after"]] unless window["filters"]["after"].is_a? Array
+
+        # Create splits
         window["splits"].each_with_index do |split, index|
           unless index == 0
             if split.include?("width")
@@ -52,11 +61,14 @@ module Teamocil
           # Support single command splits, but treat it as an array nevertheless
           split["cmd"] = [split["cmd"]] unless split["cmd"].is_a? Array
 
+          # Wrap all commands around filters
+          split["cmd"] = window["filters"]["before"] + split["cmd"] + window["filters"]["after"]
+
           # If a `root` key exist, start each split in this directory
           split["cmd"] = ["cd \"#{window["root"]}\""] + split["cmd"] if window.include?("root")
 
           # Execute each split command
-          split["cmd"].each do |command|
+          split["cmd"].compact.each do |command|
             output << "tmux send-keys -t #{index} \"#{command}\""
             output << "tmux send-keys -t #{index} Enter"
           end

teamocil.gemspec

@@ -1,6 +1,6 @@
 spec = Gem::Specification.new do |s|
   s.name         = "teamocil"
-  s.version      = "0.1.9"
+  s.version      = "0.1.10"
   s.platform     = Gem::Platform::RUBY
   s.authors      = "Rémi Prévost"
   s.email        = "remi@exomel.com"