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kompiro/NKF.nkfが内部で呼ばれるが、デコード途中で文字列が切れてしまうパターン

Created September 5, 2010 08:23
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NKF.nkfが内部で呼ばれるが、デコード途中で文字列が切れてしまうパターン
irb(main):001:0> source = "=?ISO-2022-JP?B?GyRCIXcbKEJJVBskQj83Q2VCLkpzGyhCIC0=?= =?ISO-2022-JP?B?IDIwMTAvOS8zGyRCISEbKEI=?= =?ISO-2022-JP?B?GyRCOkdNJUBoO3Y5YCRPIUhAZEJQJW0bKEI=?= =?ISO-2022-JP?B?GyRCITwlcyVBJDUkOyRrJDMkSCEqIUkbKEI=?="
=> "=?ISO-2022-JP?B?GyRCIXcbKEJJVBskQj83Q2VCLkpzGyhCIC0=?= =?ISO-2022-JP?B?IDIwMTAvOS8zGyRCISEbKEI=?= =?ISO-2022-JP?B?GyRCOkdNJUBoO3Y5YCRPIUhAZEJQJW0bKEI=?= =?ISO-2022-JP?B?GyRCITwlcyVBJDUkOyRrJDMkSCEqIUkbKEI=?="
irb(main):002:0> require 'kconv'
=> true
irb(main):003:0> source.toutf8()
error:
=> "＠IT新着速報 -"
except:
=> "＠IT新着速報 - 2010/9/3　最優先事項は“絶対ローンチさせること！”"
Raw
とりあえずデコードするためのメソッド
def decode_subject (subject)
res = ""
subject.split(' ').each do |word|
res = res + NKF.nkf("-dJw", word)
end
return res
end
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kompiro commented Sep 5, 2010

NKF.nkf("-wJ",source)を繰り返すと、それぞれの=?ISO-2022-JP...の区間ごとのデコードできる。

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