Refactor cake tasks

Cakefile

@@ -1,46 +1,49 @@
+fs     = require 'fs'
 {exec} = require 'child_process'
 
 run = (cmd) ->
   exec cmd, (err, stdout, stderr) ->
     throw err if err
     console.log stdout + stderr
 
-publish = (msg, cmd) ->
-  exec 'git status', (err, stdout) ->
-    if stdout.match /nothing to commit/
-      cmds = [
-        'rm -rf docs',
-        'node_modules/docco/bin/docco src/**/*.coffee',
-        cmd,
-        'ls -1 | grep -v docs | xargs rm -rf',
-        'mv docs/* .',
-        'rm -rf docs',
-        'git add .',
-        "git commit -m '#{msg}'",
-        'git push origin gh-pages',
-        'git checkout master',
-        'rm -rf docs',
-        'npm install'
-      ].join(' && ')
-      exec cmds
-    else
-      console.error 'Index is dirty!'
-
 task 'build', 'Build project', ->
   run 'rm -rf lib/* && coffee --compile --output lib/ src/'
 
 task 'document', 'generate docs', ->
   run 'docco src/**/*.coffee'
 
-task 'pages:init', 'Initialize GitHub Pages', ->
-  publish 'Create docs',
-          'git symbolic-ref HEAD refs/heads/gh-pages; rm .git/index'
-
-task 'pages:update', 'Update GitHub Pages', ->
-  publish 'Update docs',
-          'git checkout gh-pages'
+task 'publish', 'Publish docs to GitHub', ->
+  exec 'git rm --ignore-unmatch doc && git status', (err, stdout) ->
+    if !stdout.match /nothing to commit/
+      publish = (msg, cmd) ->
+        cmds = [
+          'rm -rf docs',
+          'node_modules/docco/bin/docco src/**/*.coffee',
+          cmd,
+          'ls -1 | grep -v docs | xargs rm -rf',
+          'mv docs/* .',
+          'rm -rf docs',
+          'git add .',
+          "git commit -m '#{msg}'",
+          'git push origin gh-pages',
+          'git checkout master',
+          'rm -rf docs',
+          'npm install'
+        ].join(' && ')
+        exec cmds
+
+      exec 'git branch', (err, stdout, stderr) ->
+        throw err if err
+        if stdout.match /gh-pages/
+          publish 'Update docs',
+                  'git checkout gh-pages'
+        else
+          publish 'Create docs',
+                  'git symbolic-ref HEAD refs/heads/gh-pages; rm .git/index'
+    else
+      console.error 'Index is dirty!'
 
-task 'publish', 'Publish project', ->
+task 'release', 'Release project to npm', ->
   run 'npm publish'
 
 task 'test', 'Run specs', ->