BSON_APPEND_CODE(3)

💅 BSON_APPEND_CODE(3) — the libbson glow-up

okay bestie, so this one's from the libbson fam, and it's literally the page that teaches you how to shove a JavaScript code element into a BSON doc. it's short, it's sweet, it's giving "small but mighty" 🧚✨

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✨ SYNOPSIS ✨

the whole vibe in two forms — the macro that does the annoying strlen for you, and the real function underneath:

#define BSON_APPEND_CODE(b, key, val) \
   bson_append_code (b, key, (int) strlen (key), val)

bool
bson_append_code (bson_t *bson,
                  const char *key,
                  int key_length,
                  const char *javascript);

like, the macro is literally just the function with the length pre-calculated 😌 convenience queen behavior.

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🎀 PARAMETERS 🎀

• bson — a bson_t. the document you're adding to, your main character 🫶
• key — the key name. the label, the name tag, the vibe check identifier.
• key_length — how long key is, or -1 to make it use strlen(). yes -1 is the "idk just figure it out" option 💀
• javascript — a UTF-8 encoded string containing the javascript. that's the payload, babes.

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🌸 DESCRIPTION 🌸

so bson_append_code() shall append a new element to bson, using the UTF-8 encoded javascript you hand it. 🦋

important little detail, no cap: javascript must be a NULL terminated C string. like, not optional. it needs that \0 at the end or the whole thing falls apart 😭

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🔥 RETURNS 🔥

returns true if the operation was applied successfully — slay ✅

but heads up: the function will fail if appending javascript grows bson larger than INT32_MAX. that's the ceiling, periodt. don't push past it 💀

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👑 AUTHOR 👑

MongoDB, Inc

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💜 COPYRIGHT 💜

2009-present, MongoDB, Inc.

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and that's the whole page, bestie — go forth and append responsibly 🌈💖✨

this has been BSON_APPEND_CODE(3) from libbson, version 2.5.6, dated Oct 09, 2026 — mwah, mwah, hope this helped 🎀💅