Reduced amount of checkout, simplifying things a bit.

README.rdoc

@@ -33,13 +33,22 @@ In config/deploy.rb, set the repository:
  set :deploy_to, "/path/to/install"
  set :repository, '[email protected]:project'
 
-By default, vlad-git will deploy origin/master. To deploy an arbitrary
+By default, vlad-git will deploy "master". To deploy an arbitrary
 rev-spec, set the :revision in config/deploy.rb:
 
- set :revision, "origin/my_branch" # Deploy a branch
+ set :revision, "my_branch"        # Deploy a branch
  set :revision, "v2.0"             # Deploy a tag
  set :revision, "a3539b3f3e9edba1" # Deploy a commit
 
+If you want to deploy from your local repository, you can use
+
+ set :repository,  "file://#{Dir.pwd}"
+
+But you should be aware the that :revision refers branches, tags,
+commit-ids in the repository, and branch names may be different in
+your repository from branch names in a remote repository. And tags and
+commit-ids may not be up to date.
+
 == Contributors
 
 * John Barnette http://github.com/jbarnette

lib/vlad/git.rb

@@ -5,45 +5,29 @@ class Vlad::Git
 
   set :source,  Vlad::Git.new
   set :git_cmd, "git"
+  set :revision, (revision || "master") ##This can be either branch, tag or git-commit
 
   # Returns the command that will check out +revision+ from the
   # repository into directory +destination+.  +revision+ can be any
   # SHA1 or equivalent (e.g. branch, tag, etc...)
 
   def checkout(revision, destination)
     destination = File.join(destination, 'repo')
-    revision = 'HEAD' if revision =~ /head/i
-    new_revision = ('HEAD' == revision) ? "origin" : revision
-
-    if fast_checkout_applicable?(revision, destination)
-      [ "cd #{destination}",
-        "#{git_cmd} checkout -q origin",
-        "#{git_cmd} fetch",
-        "#{git_cmd} reset --hard #{new_revision}",
-        submodule_cmd,
-        "#{git_cmd} branch -f deployed-#{revision} #{revision}",
-        "#{git_cmd} checkout deployed-#{revision}",
-        "cd -"
-      ].join(" && ")
-    else
-      [ "rm -rf #{destination}",
-        "#{git_cmd} clone #{repository} #{destination}",
-        "cd #{destination}",
-        "#{git_cmd} checkout -f -b deployed-#{revision} #{revision}",
-        submodule_cmd,
-        "cd -"
-      ].join(" && ")
-    end
+    depth = is_commit_id?(revision) ? "0" : "1"
+    [ "rm -rf #{destination}",
+      "#{git_cmd} clone --depth=#{depth} #{repository} #{destination}",
+      "cd #{destination}",
+      "#{git_cmd} checkout -q #{revision}",
+      submodule_cmd,
+      "cd -"
+    ].join(" && ")
   end
 
   # Returns the command that will export +revision+ from the current
   # directory into the directory +destination+. Expects to be run
   # from +scm_path+ after Vlad::Git#checkout.
 
   def export(revision, destination)
-    revision = 'HEAD' if revision =~ /head/i
-    revision = "deployed-#{revision}"
-
     [ "mkdir -p #{destination}",
       "cd repo",
       "#{git_cmd} archive --format=tar #{revision} | (cd #{destination} && tar xf -)",
@@ -57,27 +41,13 @@ def export(revision, destination)
   # +revision+ into a git SHA1.
 
   def revision(revision)
-    revision = 'HEAD' if revision =~ /head/i
-
     "`#{git_cmd} rev-parse #{revision}`"
   end
 
   private
 
-  # Checks if fast-checkout is applicable
-  def fast_checkout_applicable?(revision, destination)
-    revision = 'HEAD' if revision =~ /head/i
-
-    begin
-      cmd = [ "if cd #{destination}",
-              "#{git_cmd} rev-parse #{revision}",
-              "#{git_cmd} remote -v | grep -q #{repository}",
-              "cd -; then exit 0; else exit 1; fi &>/dev/null" ].join(" && ")
-      run cmd
-      return true
-    rescue Rake::CommandFailedError
-      return false
-    end
+  def is_commit_id?(revision)
+    revision.match(/^[0-9a-f]{6,40}$/) ? true : false
   end
 
   def submodule_cmd