Ok, Thanks for all the help. On Tue, Jun 7, 2022 at 3:28 PM Pedro Falcato <pedro.falc...@gmail.com> wrote: > > I'd say that it depends. But 98% of the strings you'll find in UEFI > (including APIs) are UCS-2 CHAR16 strings. > > On Tue, Jun 7, 2022 at 9:19 AM Ayush Singh <ayushdevel1...@gmail.com> wrote: >> >> Thanks, Pedro, >> >> However, according to the specs, it is possible to construct ASCII >> Strings as well. So when would ASCII Strings be used over normal UCS-2 >> Strings? >> >> Ayush Singh >> >> On Tue, Jun 7, 2022 at 1:13 PM Pedro Falcato <pedro.falc...@gmail.com> wrote: >> > >> > Hi Ayush, >> > >> > In the latest UEFI 2.9 spec, it's specified under 2.3.1 that CHAR8 >> > strings/characters are (usually) ASCII, and CHAR16 strings/characters are >> > (usually) UCS-2 (*not* UTF-16). >> > >> > On Tue, Jun 7, 2022 at 7:02 AM Ayush Singh <ayushdevel1...@gmail.com> >> > wrote: >> >> >> >> Hello everyone, I am trying to write an implementation for UEFI >> >> strings in Rust and just wanted clarification about some things. >> >> >> >> Are UEFI Strings UTF-16 encoded? I have looked at some previous Rust >> >> implementations for this and it seems UEFI does not support the whole >> >> UTF-16 but rather only UCS-2 >> >> (https://en.wikipedia.org/wiki/Universal_Coded_Character_Set) which is >> >> a subset of UTF-16. >> >> >> >> There is also something called WTF-8 >> >> (https://en.wikipedia.org/wiki/UTF-8#WTF-8) which Rust uses to >> >> represent OsStrings in Windows which is supposed to use UTF-16 (?). >> >> >> >> Anyway, if someone can point me to the resources/specifications of >> >> UEFI Strings, it would be a great help. >> >> >> >> Ayush Singh >> >> >> >> >> >> >> >> >> >> >> > >> > >> > -- >> > Pedro Falcato > > > > -- > Pedro Falcato
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