From 572b8b37498a875382220d957d1b4285ae046eaf Mon Sep 17 00:00:00 2001
From: akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 1 Aug 2010 00:22:18 +0000
Subject: * ext/pathname/pathname.c (path_sub): Pathname#sub translated   from
 pathname.rb.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28812 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/pathname/lib/pathname.rb | 19 -------------------
 ext/pathname/pathname.c      | 18 ++++++++++++++++++
 2 files changed, 18 insertions(+), 19 deletions(-)

(limited to 'ext')

diff --git a/ext/pathname/lib/pathname.rb b/ext/pathname/lib/pathname.rb
index 88453c3c66..b0639a4079 100644
--- a/ext/pathname/lib/pathname.rb
+++ b/ext/pathname/lib/pathname.rb
@@ -31,25 +31,6 @@ class Pathname
 
   # :startdoc:
 
-  # Return a pathname which is substituted by String#sub.
-  def sub(pattern, *rest, &block)
-    if block
-      path = @path.sub(pattern, *rest) {|*args|
-        begin
-          old = Thread.current[:pathname_sub_matchdata]
-          Thread.current[:pathname_sub_matchdata] = $~
-          eval("$~ = Thread.current[:pathname_sub_matchdata]", block.binding)
-        ensure
-          Thread.current[:pathname_sub_matchdata] = old
-        end
-        yield(*args)
-      }
-    else
-      path = @path.sub(pattern, *rest)
-    end
-    self.class.new(path)
-  end
-
   if File::ALT_SEPARATOR
     SEPARATOR_LIST = "#{Regexp.quote File::ALT_SEPARATOR}#{Regexp.quote File::SEPARATOR}"
     SEPARATOR_PAT = /[#{SEPARATOR_LIST}]/
diff --git a/ext/pathname/pathname.c b/ext/pathname/pathname.c
index 5c3620e2b5..37fc87b500 100644
--- a/ext/pathname/pathname.c
+++ b/ext/pathname/pathname.c
@@ -150,6 +150,23 @@ path_inspect(VALUE self)
     return rb_sprintf("#<%s:%s>", c, RSTRING_PTR(str));
 }
 
+/*
+ * Return a pathname which is substituted by String#sub.
+ */
+static VALUE
+path_sub(int argc, VALUE *argv, VALUE self)
+{
+    VALUE str = get_strpath(self);
+
+    if (rb_block_given_p()) {
+        str = rb_block_call(str, rb_intern("sub"), argc, argv, 0, 0);
+    }
+    else {
+        str = rb_funcall2(str, rb_intern("sub"), argc, argv);
+    }
+    return rb_class_new_instance(1, &str, rb_obj_class(self));
+}
+
 /*
  * == Pathname
  *
@@ -346,4 +363,5 @@ Init_pathname()
     rb_define_method(rb_cPathname, "to_s", path_to_s, 0);
     rb_define_method(rb_cPathname, "to_path", path_to_s, 0);
     rb_define_method(rb_cPathname, "inspect", path_inspect, 0);
+    rb_define_method(rb_cPathname, "sub", path_sub, -1);
 }
-- 
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