Added Rails framework freezing tasks: freeze_gems (freeze to current gems), freeze_edge (freeze to Rails SVN trunk), unfreeze_rails (float with newest gems on system)

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@2613 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

railties/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Added Rails framework freezing tasks: freeze_gems (freeze to current gems), freeze_edge (freeze to Rails SVN trunk), unfreeze_rails (float with newest gems on system)
+
 * Added update_javascripts task which will fetch all the latest js files from your current rails install. Use after updating rails. [Tobias Luetke]
 
 * Added cleaning of RAILS_ROOT to useless elements such as '../non-dot-dot/'. Provides cleaner backtraces and error messages. [Nicholas Seckar]

railties/lib/tasks/framework.rake

@@ -0,0 +1,31 @@
+desc "Lock this application to the current gems (by unpacking them into vendor/rails)"
+task :freeze_gems do
+  rm_rf   "vendor/rails"
+  mkdir_p "vendor/rails"
+  
+  for gem in %w( actionpack activerecord actionmailer activesupport actionwebservice )
+    system "cd vendor/rails; gem unpack #{gem}; mv #{gem}* #{gem}"
+  end
+  
+  system "cd vendor/rails; gem unpack rails; mv rails* railties"
+end
+
+desc "Lock this application to the Edge Rails (by exporting from Subversion)"
+task :freeze_edge do
+  $stderr.close
+  svn_available = `svn --version`.size > 0
+  raise "Subversion is not installed" unless svn_available
+
+  rm_rf   "vendor/rails"
+  mkdir_p "vendor/rails"
+  
+  for framework in %w( railties actionpack activerecord actionmailer activesupport actionwebservice )
+    mkdir_p "vendor/rails/#{framework}"
+    system  "svn export http://dev.rubyonrails.org/svn/rails/trunk/#{framework}/lib vendor/rails/#{framework}/lib"
+  end
+end
+
+desc "Unlock this application from freeze of gems or edge and return to a fluid use of system gems"
+task :unfreeze_rails do
+  rm_rf "vendor/rails"
+end