NS_INLINE NSArray *getPolygonsFromShapeFile(NSString *shpFilePath) {
    const char *path = [shpFilePath cStringUsingEncoding:NSUTF8StringEncoding];
    SHPHandle shp = SHPOpen(path, "rb");
    
    if (!shp) {
        return @[];
    }
    
    int numEntities;
    int shapeType;
    SHPGetInfo(shp, &numEntities, &shapeType, NULL, NULL);
    
    NSMutableArray *allPolygons = [[NSMutableArray alloc] init];
    
    for (int i = 0; i < numEntities; i++) {
        @autoreleasepool {
            SHPObject *shpObject = SHPReadObject(shp, i);
            
            if (!shpObject) {
                continue;
            }
            
            if (shpObject->nSHPType == SHPT_POLYGON || 
                shpObject->nSHPType == SHPT_POLYGONZ || 
                shpObject->nSHPType == SHPT_POLYGONM ||
                shpObject->nSHPType == SHPT_MULTIPOLYGON) {
                
                int numParts = shpObject->nParts;
                int totalVertexCount = shpObject->nVertices;
                
                for (int n = 0; n < numParts; n++) {
                    int startVertex = shpObject->panPartStart[n];
                    int partVertexCount = (n == numParts - 1) ? 
                        totalVertexCount - startVertex : 
                        shpObject->panPartStart[n + 1] - startVertex;
                    int endIndex = startVertex + partVertexCount;
                    
                    CLLocationCoordinate2D *coords = malloc(sizeof(CLLocationCoordinate2D) * partVertexCount);
                    
                    if (!coords) {
                        continue;
                    }
                    
                    for (int pv = startVertex, j = 0; pv < endIndex; pv++, j++) {
                        coords[j] = CLLocationCoordinate2DMake(shpObject->padfY[pv], 
                                                               shpObject->padfX[pv]);
                    }
                    
                    MKPolygon *singlePolygon = [MKPolygon polygonWithCoordinates:coords 
                                                                           count:partVertexCount];
                    [allPolygons addObject:singlePolygon];
                    
                    free(coords);
                }
            }
            
            SHPDestroyObject(shpObject);
        }
    }
    
    SHPClose(shp);
    return [allPolygons copy];
}