From fbf59bdbea63efd34ccc144e648467d2f52e7345 Mon Sep 17 00:00:00 2001
From: drbrain <drbrain@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 10 Nov 2007 07:48:56 +0000
Subject: Import RubyGems trunk revision 1493.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13862 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/rubygems/platform.rb | 187 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 187 insertions(+)
 create mode 100644 lib/rubygems/platform.rb

(limited to 'lib/rubygems/platform.rb')

diff --git a/lib/rubygems/platform.rb b/lib/rubygems/platform.rb
new file mode 100644
index 0000000000..f72f3a7684
--- /dev/null
+++ b/lib/rubygems/platform.rb
@@ -0,0 +1,187 @@
+require 'rubygems'
+
+# Available list of platforms for targeting Gem installations.
+#
+class Gem::Platform
+
+  @local = nil
+
+  attr_accessor :cpu
+
+  attr_accessor :os
+
+  attr_accessor :version
+
+  def self.local
+    arch = Config::CONFIG['arch']
+    arch = "#{arch}_60" if arch =~ /mswin32$/
+    @local ||= new(arch)
+  end
+
+  def self.match(platform)
+    Gem.platforms.any? do |local_platform|
+      platform.nil? or local_platform == platform or
+        (local_platform != Gem::Platform::RUBY and local_platform =~ platform)
+    end
+  end
+
+  def self.new(arch) # :nodoc:
+    case arch
+    when Gem::Platform::RUBY, nil then
+      Gem::Platform::RUBY
+    else
+      super
+    end
+  end
+
+  def initialize(arch)
+    case arch
+    when Array then
+      @cpu, @os, @version = arch
+    when String then
+      arch = arch.split '-'
+
+      if arch.length > 2 and arch.last !~ /\d/ then # reassemble x86-linux-gnu
+        extra = arch.pop
+        arch.last << "-#{extra}"
+      end
+
+      cpu = arch.shift
+
+      @cpu = case cpu
+             when /i\d86/ then 'x86'
+             else cpu
+             end
+
+      if arch.length == 2 and arch.last =~ /^\d+$/ then # for command-line
+        @os, @version = arch
+        return
+      end
+
+      os, = arch
+      @cpu, os = nil, cpu if os.nil? # legacy jruby
+
+      @os, @version = case os
+                      when /aix(\d+)/ then             [ 'aix',       $1  ]
+                      when /cygwin/ then               [ 'cygwin',    nil ]
+                      when /darwin(\d+)?/ then         [ 'darwin',    $1  ]
+                      when /freebsd(\d+)/ then         [ 'freebsd',   $1  ]
+                      when /hpux(\d+)/ then            [ 'hpux',      $1  ]
+                      when /^java$/, /^jruby$/ then    [ 'java',      nil ]
+                      when /^java([\d.]*)/ then        [ 'java',      $1  ]
+                      when /linux/ then                [ 'linux',     $1  ]
+                      when /mingw32/ then              [ 'mingw32',   nil ]
+                      when /(mswin\d+)(\_(\d+))?/ then [ $1,          $3  ]
+                      when /netbsdelf/ then            [ 'netbsdelf', nil ]
+                      when /openbsd(\d+\.\d+)/ then    [ 'openbsd',   $1  ]
+                      when /solaris(\d+\.\d+)/ then    [ 'solaris',   $1  ]
+                      # test
+                      when /^(\w+_platform)(\d+)/ then [ $1,          $2  ]
+                      else                             [ 'unknown',   nil ]
+                      end
+    when Gem::Platform then
+      @cpu = arch.cpu
+      @os = arch.os
+      @version = arch.version
+    else
+      raise ArgumentError, "invalid argument #{arch.inspect}"
+    end
+  end
+
+  def inspect
+    "#<%s:0x%x @cpu=%p, @os=%p, @version=%p>" % [self.class, object_id, *to_a]
+  end
+
+  def to_a
+    [@cpu, @os, @version]
+  end
+
+  def to_s
+    to_a.compact.join '-'
+  end
+
+  def ==(other)
+    self.class === other and
+      @cpu == other.cpu and @os == other.os and @version == other.version
+  end
+
+  def ===(other)
+    return nil unless Gem::Platform === other
+
+    # cpu
+    (@cpu == 'universal' or other.cpu == 'universal' or @cpu == other.cpu) and
+
+    # os
+    @os == other.os and
+
+    # version
+    (@version.nil? or other.version.nil? or @version == other.version)
+  end
+
+  def =~(other)
+    case other
+    when Gem::Platform then # nop
+    when String then
+      # This data is from http://gems.rubyforge.org/gems/yaml on 19 Aug 2007
+      other = case other
+              when /^i686-darwin(\d)/ then     ['x86',       'darwin',  $1]
+              when /^i\d86-linux/ then         ['x86',       'linux',   nil]
+              when 'java', 'jruby' then        [nil,         'java',    nil]
+              when /mswin32(\_(\d+))?/ then    ['x86',       'mswin32', $2]
+              when 'powerpc-darwin' then       ['powerpc',   'darwin',  nil]
+              when /powerpc-darwin(\d)/ then   ['powerpc',   'darwin',  $1]
+              when /sparc-solaris2.8/ then     ['sparc',     'solaris', '2.8']
+              when /universal-darwin(\d)/ then ['universal', 'darwin',  $1]
+              else                             other
+              end
+
+      other = Gem::Platform.new other
+    else
+      return nil
+    end
+
+    self === other
+  end
+
+  ##
+  # A pure-ruby gem that may use Gem::Specification#extensions to build
+  # binary files.
+
+  RUBY = 'ruby'
+
+  ##
+  # A platform-specific gem that is built for the packaging ruby's platform.
+  # This will be replaced with Gem::Platform::local.
+
+  CURRENT = 'current'
+
+  ##
+  # A One Click Installer-compatible gem, built with VC6 for 32 bit Windows.
+  #
+  # CURRENT is preferred over this constant, avoid its use at all costs.
+
+  MSWIN32 = new ['x86', 'mswin32', '60']
+
+  ##
+  # An x86 Linux-compatible gem
+  #
+  # CURRENT is preferred over this constant, avoid its use at all costs.
+
+  X86_LINUX = new ['x86', 'linux', nil]
+
+  ##
+  # A PowerPC Darwin-compatible gem
+  #
+  # CURRENT is preferred over this constant, avoid its use at all costs.
+
+  PPC_DARWIN = new ['ppc', 'darwin', nil]
+
+  # :stopdoc:
+  # Here lie legacy constants.  These are deprecated.
+  WIN32 = 'mswin32'
+  LINUX_586 = 'i586-linux'
+  DARWIN = 'powerpc-darwin'
+  # :startdoc:
+
+end
+
-- 
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