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Pkg::Tar

Attributes

excludes[RW]
files[RW]
project[RW]
tar[R]
target[RW]
templates[RW]
version[RW]

Public Class Methods

new() click to toggle source
# File ext/packaging/lib/packaging/tar.rb, line 10
def initialize
  @tar      = Pkg::Util::Tool.find_tool('tar', :required => true)
  @project  = Pkg::Config.project
  @version  = Pkg::Config.version
  @files    = Pkg::Config.files
  @target   = File.join(Pkg::Config.project_root, "pkg", "#{@project}-#{@version}.tar.gz")

  # We require that the excludes list be a string (which is space
  # separated, we hope)(deprecated) or an array.
  #
  if Pkg::Config.tar_excludes
    if Pkg::Config.tar_excludes.is_a?(String)
      warn "warning: `tar_excludes` should be an array, not a string"
      @excludes = Pkg::Config.tar_excludes.split(' ')
    elsif Pkg::Config.tar_excludes.is_a?(Array)
      @excludes = Pkg::Config.tar_excludes
    else
      fail "Tarball excludes must either be an array or a string, not #{@excludes.class}"
    end
  else
    @excludes = []
  end

  # On the other hand, support for explicit templates started with Arrays,
  # so that's all we support.
  #
  if Pkg::Config.templates
    @templates = Pkg::Config.templates.dup
    fail "templates must be an array" unless @templates.is_a?(Array)
    expand_templates
  end
end

Public Instance Methods

clean_up(workdir) click to toggle source
# File ext/packaging/lib/packaging/tar.rb, line 143
def clean_up(workdir)
  rm_rf workdir
end
expand_templates() click to toggle source

The templates of a project can include globs, which may expand to an arbitrary number of files. This method expands all of the templates using Dir.glob and then filters out any templates that live in the packaging tools themselves.

# File ext/packaging/lib/packaging/tar.rb, line 96
def expand_templates
  @templates.map! { |tempfile| Dir.glob(File.join(Pkg::Config::project_root, tempfile)) }
  @templates.flatten!
  @templates.reject! { |temp| temp.match(/#{Pkg::Config::packaging_root}/) }
end
install_files_to(workdir) click to toggle source
# File ext/packaging/lib/packaging/tar.rb, line 43
def install_files_to(workdir)
  install = []
  # It is nice to use arrays in YAML to represent array content, but we used
  # to support a mode where a space-separated string was used.  Support both
  # to allow a gentle migration to a modern style...
  patterns =
    case @files
    when String
      STDERR.puts "warning: `files` should be an array, not a string"
      @files.split(' ')
    when Array
      @files
    else
      raise "`files` must be a string or an array!"
    end
  # We need to add our list of file patterns from the configuration; this
  # used to be a list of "things to copy recursively", which would install
  # editor backup files and other nasty things.
  #
  # This handles that case correctly, with a deprecation warning, to augment
  # our FileList with the right things to put in place.
  #
  # Eventually, when all our projects are migrated to the new standard, we
  # can drop this in favour of just pushing the patterns directly into the
  # FileList and eliminate many lines of code and comment.
  cd Pkg::Config.project_root do
    patterns.each do |pattern|
      if File.directory?(pattern) and not Pkg::Util::File.empty_dir?(pattern)
        install << Dir[pattern + "/**/*"]
      else
        install << Dir[pattern]
      end
    end
    install.flatten!

    # Transfer all the files and symlinks into the working directory...
    install = install.select { |x| File.file?(x) or File.symlink?(x) or Pkg::Util::File.empty_dir?(x) }

    install.each do |file|
      if Pkg::Util::File.empty_dir?(file)
        mkpath(File.join(workdir, file), :verbose => false)
      else
        mkpath(File.dirname( File.join(workdir, file) ), :verbose => false)
        cp(file, File.join(workdir, file), :verbose => false, :preserve => true)
      end
    end
  end
end
pkg!() click to toggle source
# File ext/packaging/lib/packaging/tar.rb, line 147
def pkg!
  workdir = File.join(Pkg::Util::File.mktemp, "#{@project}-#{@version}")
  mkpath workdir
  self.install_files_to workdir
  self.template(workdir)
  Pkg::Util::Version.versionbump(workdir) if Pkg::Config.update_version_file
  self.tar(@target, workdir)
  self.clean_up workdir
end
template(workdir=nil) click to toggle source

Given the tar object’s template files (assumed to be in Pkg::Config.project_root), transform them, removing the originals. If workdir is passed, assume Pkg::Config.project_root exists in workdir

# File ext/packaging/lib/packaging/tar.rb, line 105
def template(workdir=nil)
  workdir ||= Pkg::Config.project_root
  root = Pathname.new(Pkg::Config.project_root)
  @templates.each do |template_file|

    template_file = File.expand_path(template_file)

    target_file = template_file.sub(File.extname(template_file),"")

    #   We construct paths to the erb template and its proposed target file
    #   relative to the project root, *not* fully qualified. This allows us
    #   to, given a temporary workdir containing a copy of the project,
    #   construct the full path to the erb and target file inside the
    #   temporary workdir.
    #
    rel_path_to_template = Pathname.new(template_file).relative_path_from(root).to_s
    rel_path_to_target = Pathname.new(target_file).relative_path_from(root).to_s

    #   What we pass to Pkg::util::File.erb_file are the paths to the erb
    #   and target inside of a temporary project directory. We are, in
    #   essence, templating "in place." This is why we remove the original
    #   files - they're not the originals in the authoritative project
    #   directory, but the originals in the temporary working copy.
    Pkg::Util::File.erb_file(File.join(workdir,rel_path_to_template), File.join(workdir, rel_path_to_target), true, :binding => Pkg::Config.get_binding)
  end
end

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