Function JSStringGetUTF8CString

pub unsafe extern "C-unwind" fn JSStringGetUTF8CString(
    string: JSStringRef,
    buffer: *mut c_char,
    buffer_size: usize,
) -> usize

Available on crate features JSStringRef and JSBase only.

Converts a JavaScript string into a null-terminated UTF8 string, and copies the result into an external byte buffer.

Parameter string: The source JSString.

Parameter buffer: The destination byte buffer into which to copy a null-terminated UTF8 representation of string. On return, buffer contains a UTF8 string representation of string. If bufferSize is too small, buffer will contain only partial results. If buffer is not at least bufferSize bytes in size, behavior is undefined.

Parameter bufferSize: The size of the external buffer in bytes.

Returns: The number of bytes written into buffer (including the null-terminator byte).