sparklemotion/nokogiri

JRuby: UtfHelpper.writeCharToUtf8 cannot handle unicode supplementary character

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#2,410 创建于 2022年1月5日

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blockedhelp wantedplatform/jrubytopic/encoding

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描述

https://github.com/sparklemotion/nokogiri/blob/55029bfba481338825c99e78af2b182b1cc49e04/ext/java/nokogiri/internals/c14n/UtfHelpper.java#L51

since the Canonicalizer process input String character by character. Java uses 16 bits to represent a character; when the input string contains Unicode characters whose code pen are larger than 0Xffff(65535) it will be split into two char, since neither char will not be
recognized, the Unicode characters will be transferred to 2 ??(3f) instead.

for example, if I want to canonicalize an input that contains 𡏅 via c14n, in the output, 𡏅 will be replaced with ??

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