Configurable dot dumper. @param type of graph nodes
| 38 | * @param <N> type of graph nodes |
| 39 | */ |
| 40 | public class DotDumper<N> { |
| 41 | |
| 42 | private static final Logger logger = LogManager.getLogger(DotDumper.class); |
| 43 | |
| 44 | private static final String INDENT = " "; |
| 45 | |
| 46 | /** |
| 47 | * The output stream for dumping dot graph. |
| 48 | */ |
| 49 | private PrintStream out; |
| 50 | |
| 51 | /** |
| 52 | * The function that converts a node to its string representation. |
| 53 | */ |
| 54 | private Function<N, String> nodeToString = Objects::toString; |
| 55 | |
| 56 | /** |
| 57 | * Global node attributes. |
| 58 | */ |
| 59 | private DotAttributes globalNodeAttrs = DotAttributes.of(); |
| 60 | |
| 61 | /** |
| 62 | * The labeler for nodes. |
| 63 | */ |
| 64 | private Function<N, String> nodeLabeler = node -> null; |
| 65 | |
| 66 | /** |
| 67 | * The node attributes. |
| 68 | */ |
| 69 | private Function<N, DotAttributes> nodeAttributer = node -> null; |
| 70 | |
| 71 | /** |
| 72 | * The labeler for edges. |
| 73 | */ |
| 74 | private Function<Edge<N>, String> edgeLabeler = edge -> null; |
| 75 | |
| 76 | /** |
| 77 | * Global edge attributes. |
| 78 | */ |
| 79 | private DotAttributes globalEdgeAttrs = DotAttributes.of(); |
| 80 | |
| 81 | /** |
| 82 | * The function that maps an edge to its attributes. |
| 83 | */ |
| 84 | private Function<Edge<N>, DotAttributes> edgeAttributer = edge -> null; |
| 85 | |
| 86 | public DotDumper<N> setNodeToString(Function<N, String> nodeToString) { |
| 87 | this.nodeToString = nodeToString; |
| 88 | return this; |
| 89 | } |
| 90 | |
| 91 | public DotDumper<N> setGlobalNodeAttributes(DotAttributes attrs) { |
| 92 | globalNodeAttrs = attrs; |
| 93 | return this; |
| 94 | } |
| 95 | |
| 96 | public DotDumper<N> setNodeLabeler(Function<N, String> nodeLabeler) { |
| 97 | this.nodeLabeler = nodeLabeler; |