- move ruby macros and rpm-rubyprov package here, epoch 1 for upgrading

[packages/rpm-build-macros.git] / rubygems.rb

diff --git a/rubygems.rb b/rubygems.rb
new file mode 100755 (executable)
index 0000000..faeeae0
--- /dev/null
+++ b/rubygems.rb
@@ -0,0 +1,128 @@
+#!/usr/bin/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"
+  $stderr.puts opts
+  exit(1)
+end
+
+require 'rubygems'
+gem_dir = Gem.respond_to?(:default_dirs) ? Gem.default_dirs[:system][:gem_dir] : Gem.path.first
+specpatt = "#{gem_dir}/specifications/.*\.gemspec$"
+gems = []
+ruby_versioned = false
+abi_provide = false
+# as ruby_version may be empty, take version from basename of archdir
+ruby_version = RbConfig::CONFIG["ruby_version"].empty? ? File.basename(RbConfig::CONFIG["archdir"]) : RbConfig::CONFIG["ruby_version"]
+
+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
+     ruby_versioned = true
+  elsif path.match(specpatt)
+    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["archdir"])
+      ruby_versioned = true
+    elsif path.match(RbConfig::CONFIG["sitelibdir"])
+      ruby_versioned = !RbConfig::CONFIG["ruby_version"].empty?
+    elsif path.match(RbConfig::CONFIG["sitearchdir"])
+      ruby_versioned = true
+    elsif path.match(RbConfig::CONFIG["vendorlibdir"])
+      ruby_versioned = !RbConfig::CONFIG["ruby_version"].empty?
+    elsif path.match(RbConfig::CONFIG["vendorarchdir"])
+      ruby_versioned = true
+    end
+  end
+end
+
+if requires or abi_provide
+  abidep = "ruby(abi)"
+  if ruby_versioned
+    abidep += " = %s" % 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
+            if version[0..1] == "!="
+              version = version.gsub(/\!=/, '>')
+            end
+            version = version.sub(/^/, ' ')
+          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