{"id":13872229,"url":"https://github.com/SwiftDocOrg/GraphViz","last_synced_at":"2025-07-16T02:30:28.510Z","repository":{"id":52247371,"uuid":"246141797","full_name":"SwiftDocOrg/GraphViz","owner":"SwiftDocOrg","description":"A Swift package for working with 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GraphViz\n\n![CI][ci badge]\n[![Documentation][documentation badge]][documentation]\n\nA Swift package for working with [GraphViz][graphviz].\n\n## Requirements\n\n- Swift 5.2+\n- GraphViz\n\n## Usage\n\n```swift\nimport GraphViz\n\nvar graph = Graph(directed: true)\n\nlet a = Node(\"a\"), b = Node(\"b\"), c = Node(\"c\")\n\ngraph.append(Edge(from: a, to: b))\ngraph.append(Edge(from: a, to: c))\n\nvar b_c = Edge(from: b, to: c)\nb_c.constraint = false\ngraph.append(b_c)\n\n// Render image to SVG using dot layout algorithm\ngraph.render(using: .dot, to: .svg) { result in \n  guard .success(let data) = result,\n        let svg = String(data: data, encoding: .utf8)\n  else { return }\n\n  print(svg)\n}\n```\n\n\u003cimg src=\"https://user-images.githubusercontent.com/7659/76256368-108d1600-620d-11ea-9263-d3ca3cc68d8d.png\" alt=\"Example GraphViz Output\" width=\"150\" align=\"right\"\u003e\n\n```dot\ndigraph {\n  a -\u003e b\n  a -\u003e c\n  b -\u003e c [constraint=false]\n}\n```\n\n\u003e **Note**:\n\u003e `render(using:to:)` and related methods require\n\u003e GraphViz to be installed on your system.\n\n### Using Function Builders, Custom Operators, and Fluent Attribute Setters\n\n```swift\nimport GraphViz\n\nlet graph = Graph(directed: true) {\n    \"a\" --\u003e \"b\"\n    \"a\" --\u003e \"c\"\n    (\"b\" --\u003e \"c\").constraint(false)\n}\n```\n\n\u003e **Note**:\n\u003e Swift 5.1 may require explicit typecast expressions in order to\n\u003e reconcile use of custom edge operators like `--\u003e`.\n\u003e (`error: ambiguous reference to member '--\u003e'`)\n\n## Installation\n\n### System Dependencies\n\nYou can install GraphViz on your system by running the following command:\n\n```terminal\n# macOS\n$ brew install graphviz\n\n# Linux (Ubuntu)\n$ sudo apt-get install graphviz\n```\n\n\u003e **Important**:\n\u003e If you add GraphViz to your macOS app\n\u003e and installed system dependencies using Homebrew,\n\u003e Xcode may emit an error message like the following:\n\u003e\n\u003e ```\n\u003e Warning: Could not load \"/usr/lib/graphviz/libgvplugin_gdk.so.6\"\n\u003e It was found, so perhaps one of its dependents was not. Try ldd.\n\u003e ```\n\u003e\n\u003e One solution is to run the following commands to sign the dependencies\n\u003e (replacing `MyName (MyTeam)` with your developer account name and team name):\n\u003e\n\u003e ```terminal\n\u003e $ codesign -f -s \"Apple Development: MyName (MyTeam)\" /usr/local/opt/*/lib/*.dylib\n\u003e $ codesign -f -s \"Apple Development: MyName (MyTeam)\" /usr/local/Cellar/*/*/lib/*.dylib\n\u003e ```\n\n### Swift Package Manager\n\nAdd the GraphViz package to your target dependencies in `Package.swift`:\n\n```swift\nimport PackageDescription\n\nlet package = Package(\n  name: \"YourProject\",\n  dependencies: [\n    .package(\n        url: \"https://github.com/SwiftDocOrg/GraphViz\",\n        from: \"0.4.1\"\n    ),\n  ]\n)\n```\n\nAdd `GraphViz` as a dependency to your target(s):\n\n```swift\ntargets: [\n.target(\n    name: \"YourTarget\",\n    dependencies: [\"GraphViz\"]),\n```\n\n## License\n\nMIT\n\n## Contact\n\nMattt ([@mattt](https://twitter.com/mattt))\n\n[graphviz]: https://graphviz.org\n[ci badge]: https://github.com/SwiftDocOrg/GraphViz/workflows/CI/badge.svg\n[documentation badge]: https://github.com/SwiftDocOrg/GraphViz/workflows/Documentation/badge.svg\n[documentation]: https://github.com/SwiftDocOrg/GraphViz/wiki\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2FSwiftDocOrg%2FGraphViz","html_url":"https://awesome.ecosyste.ms/projects/github.com%2FSwiftDocOrg%2FGraphViz","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2FSwiftDocOrg%2FGraphViz/lists"}