Function stdio_stream_write_init

examples/stdlib.c:3203–3221

}

static int stdio_stream_write_init(FILE *stream)
{
    if (!(stream->flags & STDIO_FLAG_WRITE) ||
         (stream->flags & STDIO_FLAG_ERROR))
    {
        errno = EINVAL;
        return EOF;
    }
    if (stream->flags & STDIO_FLAG_READING)
        fflush_unlocked(stream);
    stream->flags |= STDIO_FLAG_WRITING;
    if (!(stream->flags & STDIO_FLAG_INITED) &&
            stdio_stream_buf_init(stream) < 0)
        return EOF;
    if (stream->write_ptr >= stream->write_end &&
            stdio_stream_write(stream) < 0)
        return EOF;
    return 0;
}

static void stdio_stream_free(FILE *stream)
{