Alastair Houghton a31b1c54fa Centralise code to map between UTF-8 and UTF-16 on Windows. ...

In various places we need to call the Windows API, and because Swift uses UTF-8
for its string representation, we can’t call the ANSI API functions (because the
code page used for the ANSI functions varies depending on the system locale
setting). Instead, we need to use the wide character APIs.

This means that we need to convert UTF-8 to wide character and vice-versa in
various places in the runtime.

rdar://103397975

2022-12-21 11:44:35 +00:00

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