Function msWCSGetCoverage20_GetBands

mapwcs20.c:3483–3555

/************************************************************************/

static int msWCSGetCoverage20_GetBands(mapObj *map, layerObj *layer,
        wcs20ParamsObjPtr params, wcs20coverageMetadataObjPtr cm, char **bandlist)
{
    int i = 0, count, maxlen, index;
    char *current = NULL, *tmp = NULL;
    char **band_ids = NULL;

    /* if rangesubset parameter is not given, default to all bands */
    if(NULL == params->range_subset)
    {
        *bandlist = msStrdup("1");
        for(i = 1; i < cm->numbands; ++i)
        {
            char strnumber[10];
            snprintf(strnumber, sizeof(strnumber), ",%d", i + 1);
            *bandlist = msStringConcatenate(*bandlist, strnumber);
        }
        return MS_SUCCESS;
    }

    count = CSLCount(params->range_subset);
    maxlen = count * 4 * sizeof(char);
    *bandlist = msSmallCalloc(sizeof(char), maxlen);
    current = *bandlist;

    if (NULL == (tmp = msOWSGetEncodeMetadata(&layer->metadata,
                        "CO", "rangeset_axes", NULL)))
    {
        tmp = msOWSGetEncodeMetadata(&layer->metadata,
                        "CO", "band_names", NULL);
    }

    if(NULL != tmp)
    {
        band_ids = CSLTokenizeString2(tmp, " ", 0);
        msFree(tmp);
    }

    for(i = 0; i < count; ++i)
    {
        /* print ',' if not the first value */
        if(i != 0)
        {
            current = strlcat(*bandlist, ",", maxlen) + *bandlist;
        }

        /* check if the string represents an integer */
        if(msStringParseInteger(params->range_subset[i], &index) == MS_SUCCESS)
        {
            tmp = msIntToString((int)index);
            strlcat(*bandlist, tmp, maxlen);
            msFree(tmp);
            continue;
        }

        /* check if the string is equal to a band identifier    */
        /* if so, what is the index of the band                 */
        index = CSLFindString(band_ids, params->range_subset[i]);