git-buildpackage.rake

#
# Helper tasks to build debian packages from git repository
#
# apt-get install git-buildpackage
# Create local branches
# $ rake deb:setup
# create a snapshot
# $ rake snap

branch = "snapshot"

desc "Build debian snapshot package, needs upstream branch"
task :snap => [:snap_dch, :deb]

task :snap_dch do
  sh "git checkout work"
  system "git branch -D " << branch
  sh "git checkout -b " << branch
  lines = []

  fname = "debian/changelog"

  File.open(fname) do |f|
    lines = f.readlines
  end

  info = lines[0]
  pkg, ver, rel, pri = info.split
  st = ver.tr!('()', '')
  #  p pkg, ver, rel, pri, st

  st = st << "0" << "~#{Time.now.to_i}"

  l = []
  l << [pkg, "(" << st << ")", rel, pri].join(' ')
  l << ""
  # TODO add git logs
  l << "  * snapshot"
  l << ""
  l << " -- #{ENV['DEBEMAIL']}  #{Time.now.strftime("%a, %d %b %Y %H:%M:%S %z")}"
  l << ""

  l.map {|x| x  << "\n" }

  File.open(fname, "w") do |g|
    g.write((l + lines).join)
  end

  sh "git commit -a -m snapshot"
end

task :deb do
  sh "git-buildpackage --git-debian-branch=" << branch

  # switch back to work
  sh "git checkout work"
end

task :export do
  dir = Dir.pwd
  cd ".."
  sh "export_debs && rsync_debs"
  cd dir
end

namespace :deb do
  desc "Init git branches used for git-buildpackage"
  task :setup do
    sh "git checkout -b upstream"
    sh "git checkout -b work"
  end
end