unicode_norm_gen.tmpl: expand kompatible_table

* template/unicode_norm_gen.tmpl: expand kompatible_table so that
  recursive expansion is not needed at runtime.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48311 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Fri Nov  7 00:00:12 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* template/unicode_norm_gen.tmpl: expand kompatible_table so that
+	  recursive expansion is not needed at runtime.
+
 Thu Nov  6 23:58:40 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* pack.c (pack_pack): escape unprintable characters and preserve

lib/unicode_normalize/normalize.rb

@@ -84,26 +84,12 @@ module UnicodeNormalize
 
   ## Normalization Forms for Patterns (not whole Strings)
   def self.nfd_one(string)
-    string = string.dup
-    (0...string.length).each do |position|
-      if decomposition = DECOMPOSITION_TABLE[string[position]]
-        string[position] = decomposition
-      end
-    end
+    string = string.chars.map! {|c| DECOMPOSITION_TABLE[c] || c}.join('')
     canonical_ordering_one(hangul_decomp_one(string))
   end
 
   def self.nfkd_one(string)
-    string = string.dup
-    position = 0
-    while position < string.length
-      if decomposition = KOMPATIBLE_TABLE[string[position]]
-        string[position] = decomposition
-      else
-        position += 1
-      end
-    end
-    string
+    string.chars.map! {|c| KOMPATIBLE_TABLE[c] || c}.join('')
   end
 
   def self.nfc_one(string)

template/unicode_norm_gen.tmpl

@@ -138,6 +138,12 @@ decomposition_table.each do |key, value|
   kompatible_table[key] = value if expanded
 end
 
+while kompatible_table.any? {|key, value|
+        expanded = value.map {|v| kompatible_table[v] || v}.flatten
+        kompatible_table[key] = expanded unless value == expanded
+      }
+end
+
 # generate normalization tables file
 %># coding: us-ascii
 %# >