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Re: display unicode string one character at a time, not at simple as it seems
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Re: display unicode string one character at a time, not at simple as it seems


  • Subject: Re: display unicode string one character at a time, not at simple as it seems
  • From: mathew davis <email@hidden>
  • Date: Wed, 18 Feb 2009 09:42:51 +1100

Hi clark,

turns out I had really misunderstood something about how some characters such as the german ß were stored.

I thought it was much more complex that it really is.

I thought the single character ß was composed of two grapheme clusters.

Actually:

      rangeOfComposedCharacterSequencesForRange:
      rangeOfComposedCharacterSequenceAtIndex:


will do their job just fine

but I wouldn't have figured that out if you hadn't asked me, so thank you.

cheers

mathew





On Tue, Feb 17, 2009 at 2:13 PM, mathew davis <email@hidden > wrote:
Hello,

I need to break a string down into individual characters.

In English that's pretty easy.

But in some languages what a user perceives as a single block is actually a
base character plus accents plus vowel markers plus tone markers plus...



eg: เก

is made of

U+0E40 ( เ ) thai character sara e
U+0E01 ( ก ) thai character ko kai


To help with this NSString has the methods:

      rangeOfComposedCharacterSequencesForRange:
      rangeOfComposedCharacterSequenceAtIndex:

and CFString has:

      CFStringGetRangeOfComposedCharactersAtIndex.



but then some languages - like german, will sometimes combine certain
blocks together


so SS becomes ß

How, *exactly*, are the aforementioned methods/functions not working for you?


--
Clark S. Cox III
email@hidden

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References: 
 >display unicode string one character at a time, not at simple as it seems (From: mathew davis <email@hidden>)
 >Re: display unicode string one character at a time, not at simple as it seems (From: Clark Cox <email@hidden>)

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