Function utf_insert_char

StereoKitC/libraries/unicode.cpp:288–302

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bool utf_insert_char(const char* buffer_utf8_start, size_t buffer_length, char* at_utf8, char32_t character) {
	int32_t units = utf8_encode_units(character);

	// Ensure there's enough memory in the string
	if (buffer_length - (at_utf8 - buffer_utf8_start) < units) return false;

	// Shift the string to make room for the new character
	int32_t len = (int32_t)strlen(at_utf8);
	for (int32_t i = len + units; i >= units; i--)
		at_utf8[i] = at_utf8[i - units];

	// And insert the new character
	utf8_encode(at_utf8, character);
	return true;
}

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