使用 Haskell 输出 UTF-8 编码的 ByteString [英] Using Haskell to output a UTF-8-encoded ByteString

问题描述

我想简单地将 UTF-8 编码的数据输出到控制台，我快疯了.

I'm going out of my mind trying to simply output UTF-8-encoded data to the console.

我已经使用 String 成功地完成了这项工作，但现在我想用 ByteString 来做同样的事情.有没有好的快速的方法来做到这一点?

I've managed to accomplish this using String, but now I'd like to do the same with ByteString. Is there a nice and fast way to do this?

这是我到目前为止所得到的，但它不起作用:

This is what I've got so far, and it's not working:

import Prelude hiding (putStr)
import Data.ByteString.Char8 (putStr, pack)

main :: IO ()
main = putStr $ pack "čušpajž日本語"

它打印出uapaj~ , ，呃.

我想知道最新的 GHC 6.12.1 的最佳答案，尽管我也想听听以前版本的答案.

I'd like an answer for the newest GHC 6.12.1 best, although I'd like to hear answers for previous versions as well.

谢谢！

更新:简单地读取和输出相同的 UTF-8 编码文本行似乎可以正常工作.(使用 Data.ByteString.Char8，我只做了一个 putStr =<< getLine.)但是从 .hs 文件中打包值，如上例所示，拒绝正常输出...我一定是做错了什么?

Update: Simply reading and outputting the same UTF-8-encoded line of text seems to work correctly. (Using Data.ByteString.Char8, I just do a putStr =<< getLine.) But packed values from inside the .hs file, as in the above example, refuse to output properly... I must be doing something wrong?

推荐答案

utf8-string 支持字节串.

import Prelude hiding (putStr)
import Data.ByteString.Char8 (putStr)
import Data.ByteString.UTF8 (fromString)

main :: IO ()
main = putStr $ fromString "čušpajž日本語"

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