explain_fsetpos_or_die(3)

💖 explain_fsetpos_or_die — Library Functions Manual 💖

okay bestie, sit down, we're learning explain_fsetpos_or_die(3) from the Library Functions Manual and honestly? it's giving "tiny wrapper, huge main character energy". 🎀

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✨ NAME ✨

explain_fsetpos_or_die — reposition a stream and report errors

like. that's the whole job. move the stream, and if it goes wrong, scream about it. 💅

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🌸 SYNOPSIS 🌸

#include <libexplain/fsetpos.h>
void explain_fsetpos_or_die(FILE *fp, fpos_t *pos);
int explain_fsetpos_on_error(FILE *fp, fpos_t *pos);

two functions, one header, zero drama (well, some drama, that's the whole point). 🦋

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✨ DESCRIPTION ✨

so here's the tea. 🌈

The explain_fsetpos_or_die function is used to call the fsetpos(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_fsetpos(3) function, and then the process terminates by calling exit(EXIT_FAILURE).

bestie it LITERALLY dies. not metaphorically. exit(EXIT_FAILURE). the process is gone. 💀

The explain_fsetpos_on_error function is used to call the fsetpos(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_fsetpos(3) function, but still returns to the caller.

so like, same energy, but this one ✨lives✨. it tells you what went wrong and then hands control right back to you. gentle king behavior. 🫶

now the parameters, because we do NOT skip details in this house:

• fp — the fp, exactly as to be passed to the fsetpos(3) system call.
• pos — the pos, exactly as to be passed to the fsetpos(3) system call.

no tweaking, no remixing, no "what if I just pass something else tho". you pass them exactly as they're meant to be passed. periodt. 👑

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🌟 RETURN VALUE 🌟

The explain_fsetpos_or_die function only returns on success, see fsetpos(3) for more information. On failure, prints an explanation and exits, it does not return.

read that again bestie: it does not return. if it comes back to you, congrats, you won. if it doesn't… well. it did the exit thing. 😭

The explain_fsetpos_on_error function always returns the value return by the wrapped fsetpos(3) system call.

(yes, "return by", that's the original wording, we keep the facts character for character even when the grammar is doing its own little dance 💃)

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🎀 EXAMPLE 🎀

The explain_fsetpos_or_die function is intended to be used in a fashion similar to the following example:

explain_fsetpos_or_die(fp, pos);

that's it. that's the whole vibe. one line, no error handling written by you, the library handles the crying for you. iconic. ✨

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💜 SEE ALSO 💜

• fsetpos(3) — reposition a stream
• explain_fsetpos(3) — explain fsetpos(3) errors
• exit(2) — terminate the calling process

the little friend group. iykyk. 🧚

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🌸 COPYRIGHT 🌸

• libexplain version 1.4
• Copyright (C) 2010 Peter Miller

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okay that's the whole page, you ate that, no crumbs. 🍓 thanks for reading my little manual rant, this was explain_fsetpos_or_die(3) from libexplain version 1.4, copyright 2010 Peter Miller, and the page itself signs off as explain_fsetpos_or_die(3). mwah, go reposition a stream responsibly. 💖🎀🦋