From fd987f27bb47b30685349daa02367f0662c1625e Mon Sep 17 00:00:00 2001
From: Kiyoka Nishiyama <kiyoka@sumibi.org>
Date: Tue, 14 Feb 2012 13:23:05 +0900
Subject: [PATCH] Supported pure?() method. Supported `fallback to pure`
 feature on JRuby.

---
 lib/fuzzystringmatch.rb                    | 6 +++++-
 lib/fuzzystringmatch/inline/jarowinkler.rb | 4 ++++
 lib/fuzzystringmatch/pure/jarowinkler.rb   | 4 ++++
 test/basic_native_spec.rb                  | 2 ++
 test/basic_pure_spec.rb                    | 2 ++
 test/mutibyte_spec.rb                      | 2 ++
 6 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/lib/fuzzystringmatch.rb b/lib/fuzzystringmatch.rb
index 0eb87af..8e7f38c 100644
--- a/lib/fuzzystringmatch.rb
+++ b/lib/fuzzystringmatch.rb
@@ -17,7 +17,11 @@
 #
 require 'fuzzystringmatch/pure'
 begin
-  require 'fuzzystringmatch/inline'
+  if RUBY_PLATFORM == "java"
+    STDERR.puts "Warning: native version is disabled on java platform. falled back to pure ruby version..."
+  else
+    require 'fuzzystringmatch/inline'
+  end
 rescue LoadError
 end
 
diff --git a/lib/fuzzystringmatch/inline/jarowinkler.rb b/lib/fuzzystringmatch/inline/jarowinkler.rb
index 89a09e8..fd27258 100644
--- a/lib/fuzzystringmatch/inline/jarowinkler.rb
+++ b/lib/fuzzystringmatch/inline/jarowinkler.rb
@@ -18,6 +18,10 @@
 module FuzzyStringMatch
   require 'inline'
   class JaroWinklerInline
+    def pure?
+      false
+    end
+
     inline do |builder|
       builder.include '<iostream>'
       builder.add_compile_flags '-x c++', '-lstdc++'
diff --git a/lib/fuzzystringmatch/pure/jarowinkler.rb b/lib/fuzzystringmatch/pure/jarowinkler.rb
index 60e4373..3b66de3 100644
--- a/lib/fuzzystringmatch/pure/jarowinkler.rb
+++ b/lib/fuzzystringmatch/pure/jarowinkler.rb
@@ -19,6 +19,10 @@ module FuzzyStringMatch
   class JaroWinklerPure
     THRESHOLD = 0.7
 
+    def pure?
+      true
+    end
+
     def getDistance( s1, s2 )
       a1 = s1.split( // )
       a2 = s2.split( // )
diff --git a/test/basic_native_spec.rb b/test/basic_native_spec.rb
index 674931a..fa7347f 100644
--- a/test/basic_native_spec.rb
+++ b/test/basic_native_spec.rb
@@ -46,5 +46,7 @@
       d2 = @jarow.getDistance("brittney spears", "brittney startzman")
       d1 > d2
     }.should be_true
+
+    @jarow.pure?( ).should == (RUBY_PLATFORM == "java")
   end
 end
diff --git a/test/basic_pure_spec.rb b/test/basic_pure_spec.rb
index 66eaf75..fad6f94 100644
--- a/test/basic_pure_spec.rb
+++ b/test/basic_pure_spec.rb
@@ -46,5 +46,7 @@
       d2 = @jarow.getDistance("brittney spears", "brittney startzman")
       d1 > d2
     }.should be_true
+
+    @jarow.pure?( ).should be_true
   end
 end
diff --git a/test/mutibyte_spec.rb b/test/mutibyte_spec.rb
index 07a84d2..c0ef409 100644
--- a/test/mutibyte_spec.rb
+++ b/test/mutibyte_spec.rb
@@ -52,5 +52,7 @@
     @jarow.getDistance( "まつもとゆきひろ",          "まつもとひろゆき"           ).should be_within(0.0001).of(0.9500)
     @jarow.getDistance( "クライエント",              "クライアント"               ).should be_within(0.0001).of(0.9222)
     @jarow.getDistance( "サーバー",                  "サーバ"                     ).should be_within(0.0001).of(0.9416)
+
+    @jarow.pure?( ).should be_true
   end
 end