Class: FPM::Source::Python

Inherits:
FPM::Source show all
Defined in:
lib/fpm/source/python.rb

Instance Attribute Summary

Attributes inherited from FPM::Source

#paths, #root

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from FPM::Source

#[], #[]=, #dependencies, #initialize, #metadata, #package

Constructor Details

This class inherits a constructor from FPM::Source

Class Method Details

.flags(opts, settings) ⇒ Object 



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# File 'lib/fpm/source/python.rb', line 11

def self.flags(opts, settings)
  settings.source[:python] = "python"
  settings.source[:easy_install] = "easy_install"
  settings.source[:pypi] ="http://pypi.python.org/simple"

  opts.on("--bin PYTHON_BINARY_LOCATION",
          "The path to the python you want to run. Default is 'python'") do |path|
    settings.source[:python] = path
  end

  opts.on("--easyinstall EASY_INSTALL_PATH",
          "The path to your easy_install tool. Default is 'easy_install'") do |path|
    settings.source[:easy_install] = path
  end

  opts.on("--pypi PYPI_SERVER",
          "PyPi Server uri for retrieving packages. Default is 'http://pypi.python.org/simple'") do |pypi|
    settings.source[:pypi] = pypi
  end

  opts.on("--package-prefix PREFIX",
          "Prefix for python packages") do |package_prefix|
    settings.source[:package_prefix] = package_prefix
  end
end

Instance Method Details

#download(package, version = nil) ⇒ Object

def get_source



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# File 'lib/fpm/source/python.rb', line 52

def download(package, version=nil)
  puts "Trying to download #{package} (using: #{self[:settings][:easy_install]})"
  @tmpdir = ::Dir.mktmpdir("python-build", ::Dir.pwd)

  if version.nil?
    want_pkg = "#{package}"
  else
    want_pkg = "#{package}==#{version}"
  end

  safesystem(self[:settings][:easy_install], "-i", self[:settings][:pypi],
             "--editable", "--build-directory", @tmpdir, want_pkg)

  # easy_install will put stuff in @tmpdir/packagename/, flatten that.
  #  That is, we want @tmpdir/setup.py, and start with
  #  @tmpdir/somepackage/setup.py
  dirs = ::Dir.glob(File.join(@tmpdir, "*"))
  if dirs.length != 1
    raise "Unexpected directory layout after easy_install. Maybe file a bug? The directory is #{@tmpdir}"
  end
  @paths = dirs
end

#garbage ⇒ Object

def make_tarball!



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# File 'lib/fpm/source/python.rb', line 131

def garbage
  trash = []
  trash << @tmpdir if @tmpdir
  return trash
end

#get_metadata ⇒ Object

def download



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# File 'lib/fpm/source/python.rb', line 75

def get_metadata
  setup_py = @paths.first
  if File.directory?(setup_py)
    setup_py = File.join(setup_py, "setup.py")
    @paths = [setup_py]
  end

  if !File.exists?(setup_py)
    raise "Unable to find python package; tried #{setup_py}"
  end

  pylib = File.expand_path(File.dirname(__FILE__))
  setup_cmd = "env PYTHONPATH=#{pylib} #{self[:settings][:python]} #{setup_py} --command-packages=pyfpm get_metadata"
  output = ::Dir.chdir(File.dirname(setup_py)) { `#{setup_cmd}` }
  puts output
  metadata = JSON.parse(output[/\{.*\}/msx])
  #p metadata

  if self[:settings][:package_prefix]
    self[:package_prefix] = self[:settings][:package_prefix]
  else
    self[:package_prefix] = "python"
  end

  self[:architecture] = metadata["architecture"]
  self[:description] = metadata["description"]
  self[:license] = metadata["license"]
  self[:version] = metadata["version"]
  self[:name] = "#{self[:package_prefix]}#{self[:suffix]}-#{metadata["name"]}"
  self[:url] = metadata["url"]

  self[:dependencies] = metadata["dependencies"].collect do |dep|
    name, cmp, version = dep.split
    "#{self[:package_prefix]}#{self[:suffix]}-#{name} #{cmp} #{version}"
  end
end

#get_source(params) ⇒ Object

def flags



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# File 'lib/fpm/source/python.rb', line 37

def get_source(params)
  package = @paths.first
  if ["setup.py", "."].include?(package)
    # Assume we're building from an existing python package.
    # Source already acquired, nothing to do!
    return
  end

  if !File.exists?(package)
    download(package, params[:version])
  else
    @paths = [ File.expand_path(package) ]
  end
end

#make_tarball!(tar_path, builddir) ⇒ Object

def get_metadata



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# File 'lib/fpm/source/python.rb', line 112

def make_tarball!(tar_path, builddir)
  setup_py = @paths.first
  dir = File.dirname(setup_py)

  # Some setup.py's assume $PWD == current directory of setup.py, so let's
  # chdir first.
  ::Dir.chdir(dir) do
    safesystem(self[:settings][:python], "setup.py", "bdist")
  end

  dist_tar = ::Dir.glob(File.join(dir, "dist", "*.tar.gz")).first
  puts "Found dist tar: #{dist_tar}"
  puts "Copying to #{tar_path}"

  @paths = [ "." ]

  safesystem("cp", dist_tar, "#{tar_path}.gz")
end