Merge branch 'version_system' into build_system

Cakefile

@@ -34,19 +34,38 @@ source_files = ->
       all_sources.push source
   all_sources.unique()
 
+# Get the version number
+#
+version = ->
+  "#{fs.readFileSync('VERSION')}".replace /[^0-9a-zA-Z.]*/gm, ''
+
+version_tag = ->
+  "v#{version()}"
+
+# Write chosen files with a header
+#
+write_chosen_javascript = (filename, body) ->
+  fs.writeFileSync filename, """
+// Chosen #{version()} https://github.com/harvesthq/chosen
+// Copyright (c) 2011 Harvest http://getharvest.com
+// MIT License, https://github.com/harvesthq/chosen/blob/master/LICENSE.md
+// This file is generated by `cake build`, do not edit it by hand.
+#{body}
+"""
+
 # Build Chosen.
 #
 task 'build', 'build Chosen from source', build = (cb) ->
   for javascript, sources of javascripts
     code = ''
     for source in sources
-      code += CoffeeScript.compile "\n#{fs.readFileSync source}"
+      code += CoffeeScript.compile "#{fs.readFileSync source}"
-    fs.writeFileSync javascript, code
+    write_chosen_javascript javascript, code
     unless process.env.MINIFY is 'false'
-      fs.writeFileSync javascript.replace(/\.js$/,'.min.js'), (
+      write_chosen_javascript javascript.replace(/\.js$/,'.min.js'), (
         uglify.gen_code uglify.ast_squeeze uglify.ast_mangle parser.parse code
       )
-    cb() if typeof cb is 'function'
+  cb() if typeof cb is 'function'
  
 task 'watch', 'watch coffee/ for changes and build Chosen', ->
   console.log "Watching for changes in coffee/"
@@ -60,3 +79,50 @@ task 'watch', 'watch coffee/ for changes and build Chosen', ->
           console.log "Saw change in #{file}"
           invoke 'build'
     )(file)
+
+run = (cmd, args, cb, err_cb) ->
+  exec "#{cmd} #{args.join(' ')}", (err, stdout, stderr) ->
+    if err isnt null
+      console.error stderr
+      if typeof err_cb is 'function'
+        err_cb()
+      else
+        throw "Failed command execution (#{err})."
+    else
+      cb(stdout) if typeof cb is 'function'
+
+with_clean_repo = (cb) ->
+  run 'git', ['diff', '--exit-code'], cb, ->
+    throw 'There are files that need to be committed first.'
+
+without_existing_tag = (cb) ->
+  run 'git', ['tag'], (stdout) ->
+    if stdout.split("\n").indexOf( version_tag() ) >= 0
+      throw 'This tag has already been committed to the repo.'
+    else
+      cb()
+
+tag_release = (cb, cb_err) ->
+  run 'git', ['tag', '-a', '-m', "\"Version #{version()}\"", version_tag()], cb, cb_err
+
+untag_release = (e) ->
+  console.log "Failure to tag caught: #{e}"
+  console.log "Removing tag #{version_tag()}"
+  run 'git', ['tag', '-d', version_tag()]
+
+push_repo = (args=[], cb, cb_err) ->
+  run 'git', ['push'].concat(args), cb, cb_err
+
+task 'release', 'build, tag the current release, and push', ->
+  console.log "Trying to tag #{version_tag()}..."
+  with_clean_repo ->
+    without_existing_tag ->
+      build ->
+        tag_release ->
+          push_repo [], ->
+            push_repo ['--tags'], ->
+              console.log "Successfully tagged #{version_tag()}: https://github.com/harvesthq/chosen/tree/#{version_tag()}"
+
+            , untag_release
+          , untag_release
+        , untag_release

VERSION

@@ -0,0 +1 @@
+0.9