Class: Neutron::PkgConf

Inherits:
Object
  • Object
show all
Defined in:
lib/neutron/pkgconf.rb

Defined Under Namespace

Classes: InvalidPkgConfError

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(packages) ⇒ PkgConf

Returns a new instance of PkgConf.


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# File 'lib/neutron/pkgconf.rb', line 8

def initialize(packages)
  @packages = packages
  @packages.freeze
  found = []
  checked = Neutron::PkgStatus.get_checked
  begin
    (packages-checked).each do |package|
      _, code = *Neutron.execute("pkg-config --exists #{package}")
      if code == 0
        found << package
      else
        raise Neutron::PkgStatus::PkgNotFoundError, "Cannot find #{package}!"
      end
    end
  rescue Neutron::PkgStatus::PkgNotFoundError
    self.taint
    raise
  ensure
    Neutron::PkgStatus.add_found(found)
  end
  freeze
end

Instance Attribute Details

#packages ⇒ Object (readonly)

Returns the value of attribute packages.


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# File 'lib/neutron/pkgconf.rb', line 6

def packages
  @packages
end

Class Method Details

.gen_pc(filename, **opts) ⇒ Object 


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# File 'lib/neutron/pkgconf.rb', line 51

def self.gen_pc(filename, **opts)
  prefix = if ENV['PREFIX'] then ENV['PREFIX'] else '/usr' end
  filename = File.expand_path(filename)

  content = ''
  
  content << "prefix=#{prefix}\n"
  content << "exec_prefix=${prefix}\n"
  content << "includedir=${prefix}/include\n"
  content << "libdir=${exec_prefix}/lib\n"
  content << "\n"

  reqs = if opts[:requires] then opts[:requires].packages.join(' ') else '' end
  preqs = if opts[:prequires] then opts[:prequires].packages.join(' ') else '' end

  lname = opts[:name]
  if m = /lib(.+)/.match(lname.downcase)
    lname = m[1]
  end

  content << "Name: #{opts[:name] or 'Unnamed'}\n"
  content << "Description: #{opts[:description] or 'No description'}\n"
  content << "Version: #{opts[:version] or '0.1.0'}\n"
  content << "Requires: #{reqs}\n"
  content << "Requires.private: #{preqs}\n"
  content << "Cflags: #{opts[:cflags] or "-I${includedir}/#{opts[:name].downcase or 'undefined'}"}\n"
  content << "Libs: -L${libdir} -l#{lname or 'undefined'}\n"
  content << "Libs.private: #{opts[:plibs] or ''}\n"

  File.delete(filename) if File.exist?(filename)
  File.write(filename, content)

  puts "] Done generating pkg-config #{filename}"
end

Instance Method Details

#+(target) ⇒ Object

Raises:


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# File 'lib/neutron/pkgconf.rb', line 31

def +(target)
  raise InvalidPkgConfError, 'Current pkg-conf is invalid!' if tainted?
  raise InvalidPkgConfError, 'Target pkg-conf is invalid!' if target.tainted?
  Neutron::PkgConf.new((@packages+target.packages).uniq)
end

#to_cc(**opts) ⇒ Object

Raises:


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# File 'lib/neutron/pkgconf.rb', line 37

def to_cc(**opts)
  raise InvalidPkgConfError if tainted?
  o = {
    libs:   true,
    cflags: true
  }.merge(opts)
  Neutron.execute("pkg-config #{"--libs" if o[:libs]} #{"--cflags" if o[:cflags]} #{@packages.join(' ')}")[0].strip
end

#to_valac ⇒ Object

Raises:


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# File 'lib/neutron/pkgconf.rb', line 46

def to_valac
  raise InvalidPkgConfError if tainted?
  @packages.map{|p|"--pkg #{p}"}.join(' ')
end