[llvm] r190423 - Add getenv() wrapper that works on multibyte environment variable.

[Reid Kleckner]

On Tue, Sep 10, 2013 at 5:31 PM, Eli Friedman <eli.friedman at gmail.com>wrote:

> On Tue, Sep 10, 2013 at 12:45 PM, Rui Ueyama <ruiu at google.com> wrote:
>
>> +namespace sys {
>> +namespace windows {
>> +error_code UTF8ToUTF16(StringRef utf8,
>> +                       SmallVectorImpl<wchar_t> &utf16);
>> +error_code UTF16ToUTF8(const wchar_t *utf16, size_t utf16_len,
>> +                       SmallVectorImpl<char> &utf8);
>> +} // end namespace windows
>> +} // end namespace sys
>>  } // end namespace llvm.>
>>
>> We already have include/llvm/Support/ConvertUTF.h; we shouldn't need
>> Windows-specific version.
>>
>
We don't have a wrapper equivalent to UTF8ToUTF16, and I didn't think it
was worth adding one that would only be called on Windows.

Only the Windows Path wrappers really need to produce UTF16, so it makes
sense to me that they hold the functionality.
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