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Punycode: implement a UTF-8 encoder for use in demangler

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Swift SVN r20311
This commit is contained in:
Dmitri Hrybenko
2014-07-22 15:37:45 +00:00
parent d5e7ffb2a1
commit df21376444
2 changed files with 74 additions and 22 deletions
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21
lib/Basic/PunycodeUTF8.cpp
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@@ -30,24 +30,3 @@ bool Punycode::encodePunycodeUTF8(StringRef InputUTF8,
return encodePunycode(InputCodePoints, OutPunycode);
}
bool Punycode::decodePunycodeUTF8(StringRef InputPunycode,
std::string &OutUTF8) {
std::vector<uint32_t> OutCodePoints;
if (!decodePunycode(InputPunycode, OutCodePoints))
return false;
const size_t SizeUpperBound = OutCodePoints.size() * 4;
std::vector<UTF8> Result(SizeUpperBound);
const UTF32 *SourceStart = OutCodePoints.data();
UTF8 *TargetStart = Result.data();
auto ConvStatus = ConvertUTF32toUTF8(
&SourceStart, SourceStart + OutCodePoints.size(), &TargetStart,
Result.data() + Result.size(), strictConversion);
if (ConvStatus != conversionOK) {
OutUTF8.clear();
return false;
}
OutUTF8 = std::string(Result.data(), TargetStart);
return true;
}