xslt_process with more than ten parameters - patch

Hello

One Czech pg user reported problems with function xslt_process. This
function is coded with ten parameters limit.

Attached patch add support to unlimited number of parameters.

const char **
parse_params(text *paramstr)
{
    char       *pos;
    char       *pstr;
    char       *nvsep = "=";
    char       *itsep = ",";
    const char **params;
    int    nparams;
    int    mparams;        /* max params */

    pstr = text_to_cstring(paramstr);

    mparams = INIT_PARAMS;
    params = (const char **) palloc(INIT_PARAMS * sizeof(char *) + 1);

    pos = pstr;
    nparams = 0;
    while (*pos != '\0')
    {
        if (nparams >= mparams)
        {
            /* extend params params */
            mparams += EXTEND_PARAMS;
            params = (const char **) repalloc(params, mparams * sizeof(char *) + 1);
        }
        params[nparams++] = pos;
        pos = strstr(pos, nvsep);
        if (pos != NULL)
        {
            *pos = '\0';
            pos++;
        }
        else
        {
            /* No equal sign, so ignore this "parameter" */
            /* We'll reset params[i] to NULL below the loop */
            nparams--;
            break;
        }

        /* since MAXPARAMS is even, we still have i < MAXPARAMS */
        params[nparams++] = pos;
        pos = strstr(pos, itsep);
        if (pos != NULL)
        {
            *pos = '\0';
            pos++;
        }
        else
            break;
    }

    params[nparams] = NULL;

    return params;
}

Regards
Pavel Stehule