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import threading |
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import webbrowser |
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from tempfile import TemporaryDirectory |
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import networkx as nx |
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from networkx_mermaid import DiagramOrientation, DiagramNodeShape |
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from networkx_mermaid.builders import DiagramBuilder |
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from networkx_mermaid.formatters import html, markdown |
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from networkx_mermaid.typing import MermaidDiagram |
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# An example of a graph with multiple components |
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def create_graph(): |
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pastel_colors = ["#FFCCCC", "#CCFFCC", "#CCCCFF", "#FFFFCC", "#CCFFFF", "#FFCCFF"] |
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graphs: list[nx.Graph] = [nx.tetrahedral_graph(), nx.dodecahedral_graph()] |
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for i, g in enumerate(graphs): |
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nx.set_node_attributes(g, {n: {"color": pastel_colors[i]} for n in g.nodes}) |
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graph: nx.Graph = nx.disjoint_union_all(graphs) |
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graph.name = " + ".join(g.name for g in graphs) |
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return graph |
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def create_builder(): |
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# Create a Mermaid Diagram Builder with custom settings |
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builder = DiagramBuilder( |
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orientation=DiagramOrientation.LEFT_RIGHT, |
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node_shape=DiagramNodeShape.ROUND_RECTANGLE, |
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) |
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return builder |
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def create_server(port: int, root_directory: str, open_browser: bool = True) -> threading.Thread: |
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import http.server |
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import socketserver |
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url = f"http://localhost:{port}" |
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class Handler(http.server.SimpleHTTPRequestHandler): |
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def __init__(self, *args, **kwargs): |
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super().__init__(*args, directory=root_directory, **kwargs) |
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def serve(): |
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with socketserver.TCPServer(('', port), Handler) as httpd: |
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print("Serving at:", url) |
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httpd.serve_forever() |
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server_thread = threading.Thread(target=serve) |
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server_thread.daemon = True |
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server_thread.start() |
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if open_browser: |
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webbrowser.open(url) |
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def main(): |
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graph = create_graph() |
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builder = create_builder() |
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# Build the Mermaid Diagram |
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mermaid_diagram: MermaidDiagram = builder.build(graph) |
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# Format the Mermaid Diagram for Markdown embedding |
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markdown_diagram: str = markdown(mermaid_diagram) |
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# or as single page HTML |
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html_diagram: str = html(mermaid_diagram, title=graph.name) |
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print('Mermaid Diagram:') |
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print(mermaid_diagram) |
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print(markdown_diagram) |
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print(html_diagram) |
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## Save the HTML diagram to a file and serve it |
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with TemporaryDirectory() as temp_dir: |
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with open(f"{temp_dir}/index.html", 'w') as f: |
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f.write(html_diagram) |
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# Serve the HTML diagram |
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create_server(port=8073, root_directory=temp_dir, open_browser=True) |
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# Keep the main thread alive to allow the server to run |
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try: |
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while True: |
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pass |
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except KeyboardInterrupt: |
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print("Server stopped") |
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if __name__ == "__main__": |
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main() |
erivlis /
networkx-mermaid
