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#!/usr/bin/env ruby
#--
# Copyright 2010 Per Øyvind Karlsen <peroyvind@mandriva.org>
# This program is free software. It may be redistributed and/or modified under
# the terms of the LGPL version 2.1 (or later).
#
# FIXME: Someone with actual ruby skills should really clean up and sanitize
# this! fugliness obvious...
#++
require 'optparse'
require 'rbconfig'
provides = false
requires = false
opts = OptionParser.new("#{$0} <--provides|--requires>")
opts.on("-P", "--provides", "Print provides") do |val|
provides = true
end
opts.on("-R", "--requires", "Print requires") do |val|
requires= true
end
rest = opts.permute(ARGV)
if rest.size != 0 or (!provides and !requires) or (provides and requires)
$stderr.puts "Use either --provides OR --requires"
$stderr.puts opts
exit(1)
end
specpatt = "%s/specifications/.*\.gemspec$" % RbConfig::CONFIG["rubygemsdir"]
gems = []
ruby_versioned = false
abi_provide = false
for path in $stdin.readlines
# way fugly, but we make the assumption that if the package has
# this file, the package is the current ruby version, and should
# therefore provide ruby(abi) = version
if provides and path.match(RbConfig::CONFIG["archdir"] + "/rbconfig.rb")
abi_provide = true
elsif path.match(specpatt)
ruby_versioned = true
gems.push(path.chomp)
# this is quite ugly and lame, but the assumption made is that if any files
# found in any of these directories specific to this ruby version, the
# package is dependent on this specific version.
# FIXME: only supports current ruby version
elsif not ruby_versioned
if path.match(RbConfig::CONFIG["rubylibdir"])
ruby_versioned = true
elsif path.match(RbConfig::CONFIG["sitelibdir"])
ruby_versioned = true
elsif path.match(RbConfig::CONFIG["vendorlibdir"])
ruby_versioned = true
end
end
end
if requires or abi_provide
abidep = "ruby(abi)"
if ruby_versioned
abidep += " = %s" % RbConfig::CONFIG["ruby_version"]
end
print abidep + "\n"
end
if gems.length > 0
require 'rubygems'
if requires
module Gem
class Requirement
def rpm_dependency_transform(name, version)
pessimistic = ""
if version == "> 0.0.0" or version == ">= 0"
version = ""
else
if version[0..1] == "~>"
pessimistic = "rubygem(%s) < %s\n" % [name, Gem::Version.create(version[3..-1]).bump]
version = version.gsub(/\~>/, '=>')
end
version = version.gsub(/^/, ' ')
end
version = "rubygem(%s)%s\n%s" % [name, version, pessimistic]
end
def to_rpm(name)
result = as_list
return result.map { |version| rpm_dependency_transform(name, version) }
end
end
end
end
for gem in gems
data = File.read(gem)
spec = eval(data)
if provides
print "rubygem(%s) = %s\n" % [spec.name, spec.version]
end
if requires
for d in spec.dependencies
print d.requirement.to_rpm(d.name)[0] unless d.type != :runtime
end
for d in spec.required_rubygems_version.to_rpm("rubygems")
print d.gsub(/(rubygem\()|(\))/, "")
end
end
end
end
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