const-qualify cJSON * in cJSON_PrintPreallocated

[escherstair]

Like all the other cJSON_Print functions, I think that cJSON *item parameter can be const-qualified in cJSON_PrintPreallocated too
https://github.com/DaveGamble/cJSON/blob/87d8f0961a01bf09bef98ff89bae9fdec42181ee/cJSON.c#L1297C50-L1297C61
should be changed to

CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(const cJSON *item, char *buffer, const int length, const cJSON_bool format)

I opened PR #823

[ljluestc]

/* Render a cJSON entity to text using a buffer already allocated in memory with given length. Returns true on success, false otherwise. */
CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(const cJSON *item, char *buffer, const int length, const cJSON_bool format)
{
    printbuffer p = { 0 };

    if ((length < 0) || (buffer == NULL) || (item == NULL))
    {
        return cJSON_false;
    }

    /* Initialize the print buffer */
    p.buffer = (unsigned char *)buffer;
    p.length = (size_t)length;
    p.offset = 0;
    p.noalloc = cJSON_true;
    p.depth = 0;

    /* Perform the printing */
    if (print_value(item, &p))
    {
        update_offset(&p);
        if (format)
        {
            buffer[p.offset] = '\0'; /* Ensure null termination for formatted output */
        }
        return cJSON_true;
    }

    return cJSON_false;
}
​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​