bson_append_utf8() — libbson 1.6.3

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- bson_t

# bson_append_utf8()

## Synopsis

    bool
    bson_append_utf8 (bson_t *bson,
                      const char *key,
                      int key_length,
                      const char *value,
                      int length);

## Parameters

- `bson`: A bson_t.
- `key`: An ASCII C string containing the name of the field.
- `key_length`: The length of `key` in bytes, or -1 to determine the length with `strlen()`.
- `value`: A UTF-8 encoded string.
- `length`: The number of bytes in `value` excluding the trailing `\0`, or -1 to determine the length with `strlen()`.

## Description

The bson_append_utf8() function shall append a UTF-8 encoded string to `bson`.

`value` MUST be valid UTF-8.

Some UTF-8 implementations allow for `\0` to be contained within the string (excluding the termination `\0`. This is allowed, but remember that it could cause issues with communicating with external systems that do not support it.

It is suggested to use modified UTF-8 which uses a 2 byte representation for embedded `\0` within the string. This will allow these UTF-8 encoded strings to used with many libc functions.

## Returns

true if the operation was applied successfully, otherwise false and `bson` should be discarded.

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