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require 'zlib'
class ReadFile
def initialize fn, encoding='utf-8'
if fn.split('.').last == 'gz'
@f = Zlib::GzipReader.new(File.new(fn, 'rb'), :external_encoding=>encoding)
elsif fn == '-'
@f = STDIN
STDIN.set_encoding encoding
else
@f = File.new fn, 'r'
@f.set_encoding encoding
end
end
def gets
@f.gets { |line| yield line }
end
def readlines
@f.readlines
end
def readlines_strip
self.readlines.map{ |i| i.strip }
end
def read
@f.read
end
def close
@f.close if @f!=STDIN
end
end
class WriteFile
def initialize fn, encoding='utf-8'
if fn.split('.').last == 'gz'
@f = Zlib::GzipWrite.new(File.new(fn, 'wb+'), :external_encoding=>encoding)
elsif fn == '-'
@f = STDOUT
STDOUT.set_encoding encoding
else
@f = File.new fn, 'w+'
@f.set_encoding encoding
end
end
def write s
@f.write s
end
def close
@f.close if @f!=STDIN
end
end
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