Just for clarification, UCS2 and not UTF-16 means there are no surrogate pairs right?
Ayush Singh On Tue, Jun 7, 2022 at 5:15 PM Ayush Singh via groups.io <ayushdevel1325=gmail....@groups.io> wrote: > > 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 > > > > > -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#90843): https://edk2.groups.io/g/devel/message/90843 Mute This Topic: https://groups.io/mt/91595087/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
