explain_iconv_close(3)

💖 NAME 💖

explain_iconv_close — bestie, this is the page that explains all the little errors iconv_close(3) might throw at you ✨

Okay so real quick, the whole manual is explain_iconv_close(3), it lives in the Library Functions Manual, and it's about to be your new fave. Buckle up 🎀

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🌸 SYNOPSIS 🌸

#include <libexplain/iconv_close.h>
const char *explain_iconv_close(iconv_t cd);
const char *explain_errno_iconv_close(int errnum, iconv_t cd);
void explain_message_iconv_close(char *message, int message_size,
iconv_t cd);
void explain_message_errno_iconv_close(char *message, int message_size,
int errnum, iconv_t cd);

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✨ DESCRIPTION ✨

So basically, these functions? They're here to hand you actual explanations for errors that come back from the iconv_close(3) system call. Not just "something broke lol" — real, detailed, underlying cause energy. 💅

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🦋 explain_iconv_close

const char *explain_iconv_close(iconv_t cd);

The explain_iconv_close function grabs you an explanation of an error returned by the iconv_close(3) system call. The least the message will contain is the value of strerror(errno), but ngl usually it does much better and tells you the underlying cause in way more detail. Obsessed.

The errno global variable is the one that gets used to obtain the error value that's gonna be decoded.

• cd — the original cd, exactly as passed to the iconv_close(3) system call. no changes, no edits, we're keeping it faithful bestie 🫶

Returns: The message explaining the error. Heads up though — this message buffer is shared by all libexplain functions that don't supply a buffer in their own argument list. So it's gonna get overwritten by the next call to any libexplain function that shares this buffer, including calls from other threads. 🙈

Note: This function is not thread safe, because it shares a return buffer across all threads, and many other functions in this library do too. You've been warned, bestie 💀

Example: This function is intended to be used in a fashion similar to the following example:

errno = 0;
if (iconv_close(cd) < 0 && errno != 0)
{
    fprintf(stderr, "%s\n", explain_iconv_close(cd));
    exit(EXIT_FAILURE);
}

The above code example is available pre-packaged as the explain_iconv_close_or_die(3) function. Convenient or what? ✨

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🌈 explain_errno_iconv_close

const char *explain_errno_iconv_close(int errnum, iconv_t cd);

The explain_errno_iconv_close function gets you an explanation of an error returned by the iconv_close(3) system call. The least the message will contain is the value of strerror(errno), but usually it's doing way more than that and pointing at the underlying cause in more detail. slay.

• errnum — the error value to be decoded, usually grabbed from the errno global variable right before this function gets called. This one's necessary if you need to run any code between the system call being explained and this function, because many libc functions will alter the value of errno. rude of them fr fr.
• cd — the original cd, exactly as passed to the iconv_close(3) system call. 💖

Returns: The message explaining the error. Same deal as before — this message buffer is shared by all libexplain functions that don't supply a buffer in their argument list, and it'll be overwritten by the next call to any libexplain function that shares it, including other threads.

Note: This function is not thread safe, because it shares a return buffer across all threads, and many other functions in this library. 😭

Example: This function is intended to be used in a fashion similar to the following example:

errno = 0;
if (iconv_close(cd) < 0 && errno != 0)
{
    int err = errno;
    fprintf(stderr, "%s\n", explain_errno_iconv_close(err, cd));
    exit(EXIT_FAILURE);
}

The above code example is available pre-packaged as the explain_iconv_close_or_die(3) function. 🎀

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🧚 explain_message_iconv_close

void explain_message_iconv_close(char *message, int message_size,
iconv_t cd);

The explain_message_iconv_close function is used to obtain an explanation of an error returned by the iconv_close(3) system call. The least the message will contain is the value of strerror(errno), but usually it goes way harder and indicates the underlying cause in more detail.

The errno global variable will be used to obtain the error value to be decoded.

• message — the location in which to store the returned message. If a suitable message return buffer is supplied, this function is thread safe. iconic.
• message_size — the size in bytes of the location in which to store the returned message.
• cd — the original cd, exactly as passed to the iconv_close(3) system call. no cap. 🫶

Example: This function is intended to be used in a fashion similar to the following example:

errno = 0;
if (iconv_close(cd) < 0 && errno != 0)
{
    char message[3000];
    explain_message_iconv_close(message, sizeof(message), cd);
    fprintf(stderr, "%s\n", message);
    exit(EXIT_FAILURE);
}

The above code example is available pre-packaged as the explain_iconv_close_or_die(3) function. 💜

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⭐ explain_message_errno_iconv_close

void explain_message_errno_iconv_close(char *message, int message_size,
int errnum, iconv_t cd);

The explain_message_errno_iconv_close function is used to obtain an explanation of an error returned by the iconv_close(3) system call. The least the message will contain is the value of strerror(errno), but usually it will do much better, and indicate the underlying cause in more detail. main character behaviour tbh.

• message — the location in which to store the returned message. If a suitable message return buffer is supplied, this function is thread safe. 🌈
• message_size — the size in bytes of the location in which to store the returned message.
• errnum — the error value to be decoded, usually obtained from the errno global variable just before this function is called. This is necessary if you need to call any code between the system call to be explained and this function, because many libc functions will alter the value of errno. 💀
• cd — the original cd, exactly as passed to the iconv_close(3) system call. 🍓

Example: This function is intended to be used in a fashion similar to the following example:

errno = 0;
if (iconv_close(cd) < 0 && errno != 0)
{
    int err = errno;
    char message[3000];
    explain_message_errno_iconv_close(message, sizeof(message),
    err, cd);
    fprintf(stderr, "%s\n", message);
    exit(EXIT_FAILURE);
}

The above code example is available pre-packaged as the explain_iconv_close_or_die(3) function. ✨

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👑 SEE ALSO 👑

• iconv_close(3) — deallocate descriptor for character set conversion
• explain_iconv_close_or_die(3) — deallocate descriptor for character set conversion and report errors

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🎀 COPYRIGHT 🎀

libexplain version 1.4 Copyright (C) 2013 Peter Miller

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okay that's the whole page bestie, you ate that 💅✨ libexplain version 1.4, copyright 2013 Peter Miller, and the date/version footer vibes are all up there in the copyright bit — go forth and explain those iconv_close errors, periodt 🦋💖