Trf_CheckOptions(3)

💖 Trf_CheckOptions — the glow-up for your option container 💖

okay bestie, so we're deep in the transform.h era, and this is the Trf_CheckOptions(3) manual page — the one where you get to plug in your very own procedure that goes "hmm, let me look at this option container" and decides if it's slaying or if it's a whole mess. 🎀

✨ NAME ✨

Trf_CheckOptions — literally the interface to procedures that check an option container. that's the whole job. it's giving quality control supervisor. 👑

🦋 SYNOPSIS 🦋

#include <transform.h>

int Trf_CheckOptions
(
     Trf_Options options,
     Tcl_Interp *interp,
     const Trf_BaseOptions *baseOptions,
     ClientData clientData
);

look at that signature. immaculate. no notes. 💅

🌸 PARAMETERS 🌸

• Trf_Options options — the container that's about to get inspected. the main character of this whole function, honestly. 🫶
• Tcl_Interp *interp — the interpreter where you drop your error messages. and yes, bestie, it can be NULL! (that's what the original says, the (NULL possible!) energy is real). 😭
• const Trf_BaseOptions *baseOptions — all the info about the common options. the shared lore, if you will. 📚
• ClientData clientData — whatever arbitrary info you want, exactly as it was defined back in Trf_TypeDefinition.clientData. bring your own vibes. ✨

💜 DESCRIPTION 💜

so here's the tea: your procedure has to check the contents of the specified container — hunting for errors, consistency issues, all of it. that's non-negotiable, it's the assignment. 🔍

it's also allowed to set default values into any slots that were left unspecified. so if somebody ghosted a slot, you can go ahead and fill it in. 💖

the return value is a standard tcl error code. keep it standard, keep it cute.

⚠️ and listen — in the case of failure, and if interp is not NULL, you should leave an error message in the result area of the specified interpreter. don't just silently fail, that's so not it. leave a note. 🫶

👑 SEE ALSO 👑

the whole friend group, in order:

Trf_Init(3), Trf_SafeInit(3), Trf_IsInitialized(3), Trf_CreateOptions(3), Trf_DeleteOptions(3), Trf_SetOption(3), Trf_SetObjOption(3), Trf_QueryOptions(3), Trf_SeekQueryOptions(3), Trf_WriteProc(3), Trf_CreateCtrlBlock(3), Trf_DeleteCtrlBlock(3), Trf_TransformCharacter(3), Trf_TransformBuffer(3), Trf_FlushTransformation(3), Trf_ClearCtrlBlock(3), Trf_QueryMaxRead(3), Trf_Register(3), Trf_ConverterOptions(3), Trf_MDStart(3), Trf_MDUpdate(3), Trf_MDUpdateBuf(3), Trf_MDFinal(3), Trf_MDCheck(3), Trf_RegisterMessageDigest(3), Trf_LoadLibrary(3), Trf_XorBuffer(3), Trf_ShiftRegister(3), Trf_FlipRegisterShort(3), Trf_FlipRegisterLong(3), Trf_InitStubs(3)

and that's the whole page, bestie — no cap. 🌈

this lil masterpiece came from c2man chewing on transform.h, dated 27 August 2002. yes, 2002. it's vintage, it's iconic, it's still serving. 💅✨

mwah 💋 go check those options, you got this 🎀