[Haskell-cafe] Optimising UTF8-CString -> String marshaling, plus comments on withCStringLen/peekCStringLen

[Bayley, Alistair]

Weird... I sent this over a month ago, and was a bit puzzled as to why
it didn't appear on the list. Has it been waiting for a moderator to
release?

> -----Original Message-----
> From: haskell-cafe-bounces at haskell.org 
> [mailto:haskell-cafe-bounces at haskell.org] On Behalf Of Alistair Bayley
> Sent: 04 June 2007 09:44
> To: haskell-cafe
> Cc: Duncan Coutts
> Subject: Re: [Haskell-cafe] Optimising UTF8-CString -> String 
> marshaling,plus comments on withCStringLen/peekCStringLen
> 
> Hello cafe,
> 
> (Following up on my own optimisation question, and Duncan's advice
> to look at http://darcs.haskell.org/ghc/compiler/utils/Encoding.hs)
> 
> > If you want to look at some existing optimised UTF8 
> encoding/decoding
> > code then take a look at the code used in GHC:
> >
> > http://darcs.haskell.org/ghc/compiler/utils/Encoding.hs
> >
> > Duncan
> 
> I took a look at the UTF8 decoder in GHC. This inspired me to write
> one that also used unboxed types directly. Pleasingly, it goes like
> a cut cat, and uses far less space than the naive version, but it's
> not portable, which is a bummer.
...
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