From f78e8fcef2b0759986a00b0f360ea80f8f30ce76 Mon Sep 17 00:00:00 2001
From: duerst <duerst@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 7 Feb 2016 13:10:20 +0000
Subject: * common.mk: Added two more precondition files for
 enc/unicode/casefold.h * enc/unicode.c: Added shortening macros for
 enc/unicode/casefold.h * enc/unicode/case-folding.rb: Fixed file encoding for
 CaseFolding.txt   to ASCII-8BIT (should fix some ci errors). Clarified usage.
 Created   class MapItem. Partially implemented class CaseMapping. (with
 Kimihito Matsui)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53767 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog                   | 11 +++++++++++
 common.mk                   |  2 ++
 enc/unicode.c               | 10 ++++++++++
 enc/unicode/case-folding.rb | 35 +++++++++++++++++++++++++++++++----
 4 files changed, 54 insertions(+), 4 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 3eb9b734a8..a799ac29b6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,14 @@
+Sun Feb  7 22:10:08 2016  Martin Duerst  <duerst@it.aoyama.ac.jp>
+
+	* common.mk: Added two more precondition files for enc/unicode/casefold.h
+
+	* enc/unicode.c: Added shortening macros for enc/unicode/casefold.h
+
+	* enc/unicode/case-folding.rb: Fixed file encoding for CaseFolding.txt
+	  to ASCII-8BIT (should fix some ci errors). Clarified usage. Created
+	  class MapItem. Partially implemented class CaseMapping.
+	(with Kimihito Matsui)
+
 Sun Feb  7 14:12:32 2016  Martin Duerst  <duerst@it.aoyama.ac.jp>
 
 	* enc/unicode/case-folding.rb: Fixing parameter passing.
diff --git a/common.mk b/common.mk
index afe8c51cb7..898e5478fc 100644
--- a/common.mk
+++ b/common.mk
@@ -1048,6 +1048,8 @@ $(srcdir)/.unicode-tables.time: $(srcdir)/tool/generic_erb.rb \
 		$(UNICODE_DATA_DIR) lib/unicode_normalize
 
 $(srcdir)/enc/unicode/casefold.h: $(srcdir)/enc/unicode/case-folding.rb \
+		$(UNICODE_SRC_DATA_DIR)/UnicodeData.txt \
+		$(UNICODE_SRC_DATA_DIR)/SpecialCasing.txt \
 		$(UNICODE_SRC_DATA_DIR)/CaseFolding.txt
 	$(Q) $(BASERUBY) $(srcdir)/enc/unicode/case-folding.rb \
 		--output-file=$(srcdir)/enc/unicode/casefold.h \
diff --git a/enc/unicode.c b/enc/unicode.c
index 99dc6dc0d3..b0ecc1bc50 100644
--- a/enc/unicode.c
+++ b/enc/unicode.c
@@ -140,8 +140,18 @@ code3_equal(const OnigCodePoint *x, const OnigCodePoint *y)
   return 1;
 }
 
+#define UP    ONIGENC_CASE_UPCASE
+#define DOWN  ONIGENC_CASE_DOWNCASE
+#define TITLE ONIGENC_CASE_TITLECASE
+#define FOLD  ONIGENC_CASE_FOLD
+
 #include "enc/unicode/casefold.h"
 
+#undef UP
+#undef DOWN
+#undef TITLE
+#undef FOLD
+
 #include "enc/unicode/name2ctype.h"
 
 #define CODE_RANGES_NUM numberof(CodeRanges)
diff --git a/enc/unicode/case-folding.rb b/enc/unicode/case-folding.rb
index 33cbee5add..e1293a74db 100755
--- a/enc/unicode/case-folding.rb
+++ b/enc/unicode/case-folding.rb
@@ -1,10 +1,12 @@
 #!/usr/bin/ruby
 
-# Usage:
+# Usage (for case folding only):
 #   $ wget http://www.unicode.org/Public/UNIDATA/CaseFolding.txt
 #   $ ruby case-folding.rb CaseFolding.txt -o casefold.h
-#  or:
+#  or (for case folding and case mapping):
 #   $ wget http://www.unicode.org/Public/UNIDATA/CaseFolding.txt
+#   $ wget http://www.unicode.org/Public/UNIDATA/UnicodeData.txt
+#   $ wget http://www.unicode.org/Public/UNIDATA/SpecialCasing.txt
 #   $ ruby case-folding.rb -m . -o casefold.h
 
 class CaseFolding
@@ -175,12 +177,37 @@ class CaseFolding
   end
 end
 
+class MapItem
+  def initialize(code, upper, lower, title)
+    @code = code
+    @upper = upper unless upper == ''
+    @lower = lower unless lower == ''
+    @title = title unless title == ''
+  end
+  
+  def flags
+    "" # preliminary implementation
+  end
+end
+
 class CaseMapping
   def initialize (mapping_directory)
+    @mappings = {}
+    IO.readlines(File.expand_path('UnicodeData.txt', mapping_directory), encoding: Encoding::ASCII_8BIT).each do |line|
+      next if line =~ /</
+      code, _1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11, upper, lower, title = line.chomp.split ';'
+      unless upper and lower and title and (upper+lower+title)==''
+        @mappings[code] = MapItem.new(code, upper, lower, title)
+      end
+      
+    end
+    
+    # IO.readlines(File.expand_path('SpecialCasing.txt', mapping_directory))
   end
 
   def flags(from)
-    "" # preliminary implementation
+    to = @mappings[from]
+    to ? to.flags : ""
   end
 
   def self.load(*args)
@@ -216,7 +243,7 @@ if $0 == __FILE__
       warn "Either specify directory or individual file, but not both."
       exit
     end
-    filename = File.expand_path("CaseFolding.txt", mapping_directory)
+    filename = File.expand_path('CaseFolding.txt', mapping_directory)
     mapping_data = CaseMapping.load(mapping_directory)
   end
   filename ||= ARGV[0] || 'CaseFolding.txt'
-- 
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