Extract version number from the source

"requiring version.rb" strategy has some issues.

- cannot work when cross-compiling
- often introduces wrong namespace
- must know the superclasses
- costs at each runtime than at build-time

etc.

16 files changed, 58 insertions, 64 deletions

diff --git a/lib/net/ftp/net-ftp.gemspec b/lib/net/ftp/net-ftp.gemspec
index 6031ce7ccf..893305cfb8 100644
--- a/lib/net/ftp/net-ftp.gemspec
+++ b/lib/net/ftp/net-ftp.gemspec
@@ -1,13 +1,14 @@
+# frozen_string_literal: true
+
 name = File.basename(__FILE__, ".gemspec")
-version = nil
-["lib", "../.."].find do |dir|
-  version = File.foreach(File.join(__dir__, dir, "#{name.tr('-', '/')}.rb")) do |line|
+version = ["lib", Array.new(name.count("-")+1, "..").join("/")].find do |dir|
+  break File.foreach(File.join(__dir__, dir, "#{name.tr('-', '/')}.rb")) do |line|
     /^\s*VERSION\s*=\s*"(.*)"/ =~ line and break $1
   end rescue nil
 end
 
 Gem::Specification.new do |spec|
-  spec.name          = "net-ftp"
+  spec.name          = name
   spec.version       = version
   spec.authors       = ["Shugo Maeda"]
   spec.email         = ["shugo@ruby-lang.org"]
diff --git a/lib/net/http.rb b/lib/net/http.rb
index fe237dcf66..fe856ac877 100644
--- a/lib/net/http.rb
+++ b/lib/net/http.rb
@@ -388,6 +388,7 @@ module Net   #:nodoc:
   class HTTP < Protocol
 
     # :stopdoc:
+    VERSION = "0.1.0"
     Revision = %q$Revision$.split[1]
     HTTPVersion = '1.1'
     begin
diff --git a/lib/net/http/net-http.gemspec b/lib/net/http/net-http.gemspec
index cf3c5bd6a4..c6952c3c1b 100644
--- a/lib/net/http/net-http.gemspec
+++ b/lib/net/http/net-http.gemspec
@@ -1,12 +1,15 @@
-begin
-  require_relative "lib/net/http/version"
-rescue LoadError # Fallback to load version file in ruby core repository
-  require_relative "version"
+# frozen_string_literal: true
+
+name = File.basename(__FILE__, ".gemspec")
+version = ["lib", Array.new(name.count("-")+1, "..").join("/")].find do |dir|
+  break File.foreach(File.join(__dir__, dir, "#{name.tr('-', '/')}.rb")) do |line|
+    /^\s*VERSION\s*=\s*"(.*)"/ =~ line and break $1
+  end rescue nil
 end
 
 Gem::Specification.new do |spec|
-  spec.name          = "net-http"
-  spec.version       = Net::Http::VERSION
+  spec.name          = name
+  spec.version       = version
   spec.authors       = ["NARUSE, Yui"]
   spec.email         = ["naruse@airemix.jp"]
 
diff --git a/lib/net/http/version.rb b/lib/net/http/version.rb
deleted file mode 100644
index 832d597111..0000000000
--- a/lib/net/http/version.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-module Net
-  module Http
-    VERSION = "0.1.0"
-  end
-end
diff --git a/lib/net/imap.rb b/lib/net/imap.rb
index 704fdef382..de13d0807c 100644
--- a/lib/net/imap.rb
+++ b/lib/net/imap.rb
@@ -201,6 +201,8 @@ module Net
   #    Unicode", RFC 2152, May 1997.
   #
   class IMAP < Protocol
+    VERSION = "0.1.0"
+
     include MonitorMixin
     if defined?(OpenSSL::SSL)
       include OpenSSL
diff --git a/lib/net/imap/net-imap.gemspec b/lib/net/imap/net-imap.gemspec
index 696ec79ae7..2426e0932d 100644
--- a/lib/net/imap/net-imap.gemspec
+++ b/lib/net/imap/net-imap.gemspec
@@ -1,12 +1,15 @@
-begin
-  require_relative 'lib/net/imap/version'
-rescue LoadError # Fallback to load version file in ruby core repository
-  require_relative "version"
+# frozen_string_literal: true
+
+name = File.basename(__FILE__, ".gemspec")
+version = ["lib", Array.new(name.count("-")+1, "..").join("/")].find do |dir|
+  break File.foreach(File.join(__dir__, dir, "#{name.tr('-', '/')}.rb")) do |line|
+    /^\s*VERSION\s*=\s*"(.*)"/ =~ line and break $1
+  end rescue nil
 end
 
 Gem::Specification.new do |spec|
-  spec.name          = "net-imap"
-  spec.version       = Net::Imap::VERSION
+  spec.name          = name
+  spec.version       = version
   spec.authors       = ["Shugo Maeda"]
   spec.email         = ["shugo@ruby-lang.org"]
 
diff --git a/lib/net/imap/version.rb b/lib/net/imap/version.rb
deleted file mode 100644
index 47d3de471f..0000000000
--- a/lib/net/imap/version.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-module Net
-  module Imap
-    VERSION = "0.1.0"
-  end
-end
diff --git a/lib/net/pop.rb b/lib/net/pop.rb
index 30161105f9..ed1963975b 100644
--- a/lib/net/pop.rb
+++ b/lib/net/pop.rb
@@ -194,9 +194,8 @@ module Net
   # String. Normally the unique-id is a hash of the message.
   #
   class POP3 < Protocol
-
-    # svn revision of this library
-    Revision = %q$Revision$.split[1]
+    # version of this library
+    VERSION = "0.1.0"
 
     #
     # Class Parameters
diff --git a/lib/net/pop/net-pop.gemspec b/lib/net/pop/net-pop.gemspec
index c1b0ffbd2b..90d594f14a 100644
--- a/lib/net/pop/net-pop.gemspec
+++ b/lib/net/pop/net-pop.gemspec
@@ -1,12 +1,15 @@
-begin
-  require_relative "lib/net/pop/version"
-rescue LoadError # Fallback to load version file in ruby core repository
-  require_relative "version"
+# frozen_string_literal: true
+
+name = File.basename(__FILE__, ".gemspec")
+version = ["lib", Array.new(name.count("-")+1, "..").join("/")].find do |dir|
+  break File.foreach(File.join(__dir__, dir, "#{name.tr('-', '/')}.rb")) do |line|
+    /^\s*VERSION\s*=\s*"(.*)"/ =~ line and break $1
+  end rescue nil
 end
 
 Gem::Specification.new do |spec|
-  spec.name          = "net-pop"
-  spec.version       = Net::POP3::VERSION
+  spec.name          = name
+  spec.version       = version
   spec.authors       = ["Yukihiro Matsumoto"]
   spec.email         = ["matz@ruby-lang.org"]
 
diff --git a/lib/net/pop/version.rb b/lib/net/pop/version.rb
deleted file mode 100644
index ef5c295cc3..0000000000
--- a/lib/net/pop/version.rb
+++ /dev/null
@@ -1,6 +0,0 @@
-module Net
-  class Protocol; end
-  class POP3 < Protocol
-    VERSION = "0.1.0"
-  end
-end
diff --git a/lib/net/protocol.rb b/lib/net/protocol.rb
index 07fbc6a21f..cba92613c7 100644
--- a/lib/net/protocol.rb
+++ b/lib/net/protocol.rb
@@ -26,6 +26,8 @@ require 'io/wait'
 module Net # :nodoc:
 
   class Protocol   #:nodoc: internal use only
+    VERSION = "0.1.0"
+
     private
     def Protocol.protocol_param(name, val)
       module_eval(<<-End, __FILE__, __LINE__ + 1)
diff --git a/lib/net/protocol/net-protocol.gemspec b/lib/net/protocol/net-protocol.gemspec
index 2bfd2e29dd..a277c301d5 100644
--- a/lib/net/protocol/net-protocol.gemspec
+++ b/lib/net/protocol/net-protocol.gemspec
@@ -1,12 +1,15 @@
-begin
-  require_relative "lib/net/protocol/version"
-rescue LoadError # Fallback to load version file in ruby core repository
-  require_relative "version"
+# frozen_string_literal: true
+
+name = File.basename(__FILE__, ".gemspec")
+version = ["lib", Array.new(name.count("-")+1, "..").join("/")].find do |dir|
+  break File.foreach(File.join(__dir__, dir, "#{name.tr('-', '/')}.rb")) do |line|
+    /^\s*VERSION\s*=\s*"(.*)"/ =~ line and break $1
+  end rescue nil
 end
 
 Gem::Specification.new do |spec|
-  spec.name          = "net-protocol"
-  spec.version       = Net::Protocol::VERSION
+  spec.name          = name
+  spec.version       = version
   spec.authors = ["Yukihiro Matsumoto"]
   spec.email = ["matz@ruby-lang.org"]
 
diff --git a/lib/net/protocol/version.rb b/lib/net/protocol/version.rb
deleted file mode 100644
index ec51a4c4ef..0000000000
--- a/lib/net/protocol/version.rb
+++ /dev/null
@@ -1,5 +0,0 @@
-module Net
-  class Protocol
-    VERSION = "0.1.0"
-  end
-end
diff --git a/lib/net/smtp.rb b/lib/net/smtp.rb
index 801f662d01..f8121cd44f 100644
--- a/lib/net/smtp.rb
+++ b/lib/net/smtp.rb
@@ -168,6 +168,7 @@ module Net
   #                     'Your Account', 'Your Password', :cram_md5)
   #
   class SMTP < Protocol
+    VERSION = "0.1.0"
 
     Revision = %q$Revision$.split[1]
 
diff --git a/lib/net/smtp/net-smtp.gemspec b/lib/net/smtp/net-smtp.gemspec
index f0aae585de..4c8c07810b 100644
--- a/lib/net/smtp/net-smtp.gemspec
+++ b/lib/net/smtp/net-smtp.gemspec
@@ -1,12 +1,15 @@
-begin
-  require_relative "lib/net/smtp/version"
-rescue LoadError # Fallback to load version file in ruby core repository
-  require_relative "version"
+# frozen_string_literal: true
+
+name = File.basename(__FILE__, ".gemspec")
+version = ["lib", Array.new(name.count("-")+1, "..").join("/")].find do |dir|
+  break File.foreach(File.join(__dir__, dir, "#{name.tr('-', '/')}.rb")) do |line|
+    /^\s*VERSION\s*=\s*"(.*)"/ =~ line and break $1
+  end rescue nil
 end
 
 Gem::Specification.new do |spec|
-  spec.name          = "net-smtp"
-  spec.version       = Net::SMTP::VERSION
+  spec.name          = name
+  spec.version       = version
   spec.authors       = ["Yukihiro Matsumoto"]
   spec.email         = ["matz@ruby-lang.org"]
 
diff --git a/lib/net/smtp/version.rb b/lib/net/smtp/version.rb
deleted file mode 100644
index 7f5aaaa6db..0000000000
--- a/lib/net/smtp/version.rb
+++ /dev/null
@@ -1,6 +0,0 @@
-module Net
-  class Protocol; end
-  class SMTP < Protocol
-    VERSION = "0.1.0"
-  end
-end