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* lib/fileutils.rb (module FileUtils): improve performance of

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FileUtils.compare_stream. a patch by Masaki Matsushita.
  [Feature #5337] [ruby-core:39622]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33297 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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ayumin 2011-09-19 10:34:30 +00:00
parent d4db53a0e0
commit 6ec841b2df
2 changed files with 13 additions and 10 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
Mon Sep 19 18:55:51 2011 Ayumu AIZAWA <ayumu.aizawa@gmail.com>
* lib/fileutils.rb (module FileUtils): improve performance of
FileUtils.compare_stream. a patch by Masaki Matsushita.
[Feature #5337] [ruby-core:39622]
Mon Sep 19 18:42:58 2011 KOSAKI Motohiro <kosaki.motohiro@gmail.com>
* test/-ext-/old_thread_select/test_old_thread_select.rb:

17
lib/fileutils.rb
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@ -823,16 +823,13 @@ module FileUtils
#
def compare_stream(a, b)
bsize = fu_stream_blksize(a, b)
sa = sb = nil
while sa == sb
sa = a.read(bsize)
sb = b.read(bsize)
unless sa and sb
if sa.nil? and sb.nil?
return true
end
end
end
sa = ""
sb = ""
begin
a.read(bsize, sa)
b.read(bsize, sb)
return true if sa.empty? && sb.empty?
end while sa == sb
false
end
module_function :compare_stream