From 38caf64938ef26c2c32c11fcb2c1e1263f81346d Mon Sep 17 00:00:00 2001
From: Ralph Amissah <ralph@amissah.com>
Date: Wed, 20 Aug 2014 18:31:17 -0400
Subject: rbuild, gem build a selected tagged sisu version

---
 data/doc/sisu/sisu.org |  5 ++++
 rbuild                 | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 68 insertions(+)

diff --git a/data/doc/sisu/sisu.org b/data/doc/sisu/sisu.org
index 196ab051..ac0fd01e 100644
--- a/data/doc/sisu/sisu.org
+++ b/data/doc/sisu/sisu.org
@@ -2378,3 +2378,8 @@ copyright symbol automatically.
 
 Regards,
 Daniel
+* Reference versions
+** v5
+5.6.2
+5.6.1
+5.5.6 (5.5.5)
diff --git a/rbuild b/rbuild
index ab2e040a..261c5256 100644
--- a/rbuild
+++ b/rbuild
@@ -333,6 +333,46 @@ http://www.jus.uio.no/sisu/pkg/src/sisu_#{vi[:version]}.orig.tar.xz
   end
   self
 end
+module GitExtractTaggedVersionBuild
+  def upstream
+    system(%{ git checkout upstream })
+  end
+  def self.git_tagged_versions(vb=nil)
+    if vb.tag
+      v=if vb.tag =~/sisu_[0-9](?:\.[0-9]){0,2}$/ then vb.tag
+      elsif vb.tag =~/^[0-9](?:\.[0-9]){0,2}$/    then 'sisu_' + vb.tag
+      else                                             'sisu_'
+      end
+      system(%{ git tag -l | ag --nocolor '^#{v}' })
+    end
+  end
+  def self.git_checkout_and_build_version(vb)
+    begin
+      ver=if vb.tag =~/sisu_[0-9]\.[0-9]+\.[0-9]+/ then vb.tag
+      elsif  vb.tag =~/^[0-9]\.[0-9]+\.[0-9]+/     then 'sisu_' + vb.tag
+      else                                               vb.branch
+      end
+      install_branch=case vb.branch
+      when /^(?:stable|unstable)$/
+        "gem_create_build_install_#{vb.branch}"
+      when /^(?:all)/
+        'gem_create_build_install'
+      else
+        'gem_create_build_install_stable'
+      end
+      commands =<<-WOK
+        git checkout #{ver} &&
+        rake #{install_branch};
+      WOK
+      puts commands
+      system(commands)
+    ensure
+      system(%{
+        git checkout upstream
+      })
+    end
+  end
+end
 module Gemspecs
   def self.info(vi)
     puts <<-WOK
@@ -691,6 +731,29 @@ desc 'Help'
 #desc "Setup/Install #{Project_details.name} (uses filelist)"
   task :install => [:default_notice,:project]
   task :install_bin => [:setup_bin_]
+#desc "search for a version tag e.g. 'tag[5.6.0]'"
+  task :tag, [:tag] do |t, args|
+    args.with_defaults(:tag => Version_info::Next.setting_stable[:version])
+    puts "Check for Version Tag: #{args.tag}"
+    print "Version Tag:           "
+    GitExtractTaggedVersionBuild::git_tagged_versions(args)
+  end
+#desc "build and install a specific git tagged version of sisu, e.g. 'build[5.6.0]'"
+  task :build, [:tag, :branch] => :done do |t, args|
+    args.with_defaults(:tag => '5.6.0', :branch => 'stable')
+    puts "Version Tag: #{args.tag}"
+    puts "Branch: #{args.branch}"
+    GitExtractTaggedVersionBuild::git_tagged_versions(args.tag)
+    ans= <<-WOK
+  Gem Install SiSU Version
+    WOK
+    resp=Utils.answer?(ans)
+    exit unless resp
+    GitExtractTaggedVersionBuild::git_checkout_and_build_version(args)
+  end
+  task :done do
+    puts 'done'
+  end
                                                            #%% setup/install tasks
 task :rant_independence do                                 #notice
   resp=''
-- 
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