how to test if a string is a valid UTF16 string?

Posted by superb on Stack Overflow See other posts from Stack Overflow or by superb
Published on 2010-05-23T08:42:18Z Indexed on 2010/05/23 8:50 UTC
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JavaScript

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encoding

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mongodb

I am using mongodb and javascript to do some string processing. Now I got some error like:

Sun May 23 07:42:20 Assertion failure JS_EncodeCharacters( _context , s , srclen , dst , &len) scripting/engine_spidermonkey.cpp 152 0x80f4f7e 0x80f8794 0x811525b 0x811a953 0x8119fc4 0x8111bc5 0x81b408e 0x81c4ee7 0x81b4a10 0x817a881 0x817a7d8 0x817a6e2 0x811e1bb 0x80a777b 0x80a8f8a 0xb7cb2455 0x80a37a1 mongodb-linux-i686-1.4.2/bin/mongo(_ZN5mongo12sayDbContextEPKc+0xfe) [0x80f4f7e]

After doing some google, I find that JS_EncodeCharacters return false if the input is not a valid UTF16 string. (if spidermonkey is build with UTF-8 enabled)

So I was wondering how to test if the input string if a proper UTF16 string? so I can skip such kind of string to avoid problem ...

Thanks

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