Class: Gem::Platform

Inherits:
Object
  • Object
show all
Defined in:
lib/rubygems/platform.rb

Overview

Available list of platforms for targeting Gem installations.

See `gem help platform` for information on platform matching.

Constant Summary collapse

RUBY =

A pure-Ruby gem that may use Gem::Specification#extensions to build binary files.

"ruby".freeze
CURRENT =

A platform-specific gem that is built for the packaging Ruby's platform. This will be replaced with Gem::Platform::local.

"current".freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(arch) ⇒ Platform

Returns a new instance of Platform.



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# File 'lib/rubygems/platform.rb', line 66

def initialize(arch)
  case arch
  when Array then
    @cpu, @os, @version = arch
  when String then
    arch = arch.split "-"

    if arch.length > 2 && arch.last !~ /\d+(\.\d+)?$/ # reassemble x86-linux-{libc}
      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 && arch.last =~ /^\d+(\.\d+)?$/ # 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",    $1  ]
    when /^macruby$/ then             [ "macruby",   nil ]
    when /freebsd(\d+)?/ then         [ "freebsd",   $1  ]
    when /hpux(\d+)?/ then            [ "hpux",      $1  ]
    when /^java$/, /^jruby$/ then     [ "java",      nil ]
    when /^java([\d.]*)/ then         [ "java",      $1  ]
    when /^dalvik(\d+)?$/ then        [ "dalvik",    $1  ]
    when /^dotnet$/ then              [ "dotnet",    nil ]
    when /^dotnet([\d.]*)/ then       [ "dotnet",    $1  ]
    when /linux-?(\w+)?/ then         [ "linux",     $1  ]
    when /mingw32/ then               [ "mingw32",   nil ]
    when /mingw-?(\w+)?/ then         [ "mingw",     $1  ]
    when /(mswin\d+)(\_(\d+))?/ then
      os, version = $1, $3
      @cpu = "x86" if @cpu.nil? && os =~ /32$/
      [os, version]
    when /netbsdelf/ then             [ "netbsdelf", nil ]
    when /openbsd(\d+\.\d+)?/ then    [ "openbsd",   $1  ]
    when /bitrig(\d+\.\d+)?/ then     [ "bitrig",    $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

Instance Attribute Details

#cpu ⇒ Object

Returns the value of attribute cpu.



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# File 'lib/rubygems/platform.rb', line 12

def cpu
  @cpu
end

#os ⇒ Object

Returns the value of attribute os.



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# File 'lib/rubygems/platform.rb', line 12

def os
  @os
end

#version ⇒ Object

Returns the value of attribute version.



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# File 'lib/rubygems/platform.rb', line 12

def version
  @version
end

Class Method Details

.installable?(spec) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubygems/platform.rb', line 47

def self.installable?(spec)
  if spec.respond_to? :installable_platform?
    spec.installable_platform?
  else
    match_spec? spec
  end
end

.local ⇒ Object 



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# File 'lib/rubygems/platform.rb', line 14

def self.local
  arch = RbConfig::CONFIG["arch"]
  arch = "#{arch}_60" if arch =~ /mswin(?:32|64)$/
  @local ||= new(arch)
end

.match(platform) ⇒ Object 



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# File 'lib/rubygems/platform.rb', line 20

def self.match(platform)
  match_platforms?(platform, Gem.platforms)
end

.match_gem?(platform, gem_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubygems/platform.rb', line 37

def self.match_gem?(platform, gem_name)
  # Note: this method might be redefined by Ruby implementations to
  # customize behavior per RUBY_ENGINE, gem_name or other criteria.
  match_platforms?(platform, Gem.platforms)
end

.match_spec?(spec) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rubygems/platform.rb', line 33

def self.match_spec?(spec)
  match_gem?(spec.platform, spec.name)
end

.new(arch) ⇒ Object

:nodoc:



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# File 'lib/rubygems/platform.rb', line 55

def self.new(arch) # :nodoc:
  case arch
  when Gem::Platform::CURRENT then
    Gem::Platform.local
  when Gem::Platform::RUBY, nil, "" then
    Gem::Platform::RUBY
  else
    super
  end
end

.sort_priority(platform) ⇒ Object 



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# File 'lib/rubygems/platform.rb', line 43

def self.sort_priority(platform)
  platform == Gem::Platform::RUBY ? -1 : 1
end

Instance Method Details

#==(other) ⇒ Object Also known as: eql?

Is other equal to this platform? Two platforms are equal if they have the same CPU, OS and version.



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# File 'lib/rubygems/platform.rb', line 141

def ==(other)
  self.class === other && to_a == other.to_a
end

#===(other) ⇒ Object

Does other match this platform? Two platforms match if they have the same CPU, or either has a CPU of 'universal', they have the same OS, and they have the same version, or either one has no version

Additionally, the platform will match if the local CPU is 'arm' and the other CPU starts with “arm” (for generic ARM family support).

Of note, this method is not commutative. Indeed the OS 'linux' has a special case: the version is the libc name, yet while “no version” stands as a wildcard for a binary gem platform (as for other OSes), for the runtime platform “no version” stands for 'gnu'. To be able to disinguish these, the method receiver is the gem platform, while the argument is the runtime platform.



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# File 'lib/rubygems/platform.rb', line 166

def ===(other)
  return nil unless Gem::Platform === other

  # universal-mingw32 matches x64-mingw-ucrt
  return true if (@cpu == "universal" || other.cpu == "universal") &&
                 @os.start_with?("mingw") && other.os.start_with?("mingw")

  # cpu
  ([nil,"universal"].include?(@cpu) || [nil, "universal"].include?(other.cpu) || @cpu == other.cpu ||
  (@cpu == "arm" && other.cpu.start_with?("arm"))) &&

    # os
    @os == other.os &&

    # version
    (
      (@os != "linux" && (@version.nil? || other.version.nil?)) ||
      (@os == "linux" && ((@version.nil? && ["gnu", "musl"].include?(other.version)) || (@version == "gnu" && other.version.nil?))) ||
      @version == other.version
    )
end

#=~(other) ⇒ Object

Does other match this platform? If other is a String it will be converted to a Gem::Platform first. See #=== for matching rules.



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# File 'lib/rubygems/platform.rb', line 192

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",  $1    ]
    when /^i\d86-linux/         then ["x86",       "linux",   nil   ]
    when "java", "jruby"        then [nil,         "java",    nil   ]
    when /^dalvik(\d+)?$/       then [nil,         "dalvik",  $1    ]
    when /dotnet(\-(\d+\.\d+))?/ then ["universal","dotnet",  $2    ]
    when /mswin32(\_(\d+))?/    then ["x86",       "mswin32", $2    ]
    when /mswin64(\_(\d+))?/    then ["x64",       "mswin64", $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

#hash ⇒ Object

:nodoc:



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# File 'lib/rubygems/platform.rb', line 147

def hash # :nodoc:
  to_a.hash
end

#to_a ⇒ Object 



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# File 'lib/rubygems/platform.rb', line 129

def to_a
  [@cpu, @os, @version]
end

#to_s ⇒ Object 



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# File 'lib/rubygems/platform.rb', line 133

def to_s
  to_a.compact.join "-"
end