* ext/iconv/charset_alias.rb (charset_alias): create wrapper libray

even if no target matched.

* ext/iconv/extconf.rb: create wrapper library under RUBYARCHDIR
  directly.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@9384 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/iconv/charset_alias.rb

@@ -15,23 +15,25 @@ class Hash::Ordered < Hash
   end
   def []=(key, val)
     ary = fetch(key) {return super(key, [self.size, key, val])} and
-      ary.last = val
+      ary << val
   end
-  def each
-    values.sort.each {|i, key, val| yield key, val}
+  def sort
+    values.sort.collect {|i, *rest| rest}
+  end
+  def each(&block)
+    sort.each(&block)
   end
 end
 
 def charset_alias(config_charset, mapfile, target = OS)
   map = Hash::Ordered.new
   comments = []
-  match = false
   open(config_charset) do |input|
-    input.find {|line| /^case "\$os" in/ =~ line} or return
+    input.find {|line| /^case "\$os" in/ =~ line} or break
     input.find {|line|
       /^\s*([-\w\*]+(?:\s*\|\s*[-\w\*]+)*)(?=\))/ =~ line and
       $&.split('|').any? {|pattern| File.fnmatch?(pattern.strip, target)}
-    } or return
+    } or break
     input.find do |line|
       case line
       when /^\s*echo "(?:\$\w+\.)?([-\w*]+)\s+([-\w]+)"/
@@ -48,17 +50,40 @@ def charset_alias(config_charset, mapfile, target = OS)
   end
   case target
   when /linux|-gnu/
-    map.delete('ascii')
-  when /cygwin/
+    # map.delete('ascii')
+  when /cygwin|os2-emx/
     # get rid of tilde/yen problem.
     map['shift_jis'] = 'cp932'
   end
+  st = Hash.new(0)
+  map = map.sort.collect do |can, *sys|
+    if sys.grep(/^en_us(?=.|$)/i) {break true} == true
+      noen = %r"^(?!en_us)\w+_\w+#{Regexp.new($')}$"i #"
+      sys.reject! {|s| noen =~ s}
+    end
+    sys = sys.first
+    st[sys] += 1
+    [can, sys]
+  end
+  st.delete_if {|sys, i| i == 1}.empty?
+  st.keys.each {|sys| st[sys] = nil}
+  st.default = nil
   writer = proc do |f|
     f.puts("require 'iconv.so'")
     f.puts
     f.puts(comments)
     f.puts("class Iconv")
-    map.each {|can, sys| f.puts("  charset_map['#{can}'.freeze] = '#{sys}'.freeze")}
+    i = 0
+    map.each do |can, sys|
+      if s = st[sys]
+        sys = s
+      elsif st.key?(sys)
+        sys = (st[sys] = "sys#{i+=1}") + " = '#{sys}'.freeze"
+      else
+        sys = "'#{sys}'.freeze"
+      end
+      f.puts("  charset_map['#{can}'] = #{sys}")
+    end
     f.puts("end")
   end
   if mapfile

ext/iconv/extconf.rb

@@ -26,8 +26,12 @@ if have_func("iconv", "iconv.h") or
   if conf
     prefix = '$(srcdir)'
     prefix =  $nmake ? "{#{prefix}}" : "#{prefix}/"
-    wrapper = "./iconv.rb"
-    $INSTALLFILES = [[wrapper, "$(RUBYARCHDIR)"]]
+    if $extout
+      wrapper = "$(RUBYARCHDIR)/iconv.rb"
+    else
+      wrapper = "./iconv.rb"
+      $INSTALLFILES = [[wrapper, "$(RUBYARCHDIR)"]]
+    end
     if String === conf
       require 'uri'
       scheme = URI.parse(conf).scheme