#uml_cli

A command-line tool to render PlantUML diagrams as SVG, built on kokic/uml.

#Run without installing

The prebuilt binary can be run directly from mooncakes.io — it is fetched and cached on first use, and arguments are passed straight through (no -- separator needed). Pin a version with moonbit-community/uml_cli@<version> for reproducible behavior:

moonx moonbit-community/uml_cli --help
moonx moonbit-community/uml_cli diagram.puml > diagram.svg
moonx moonbit-community/uml_cli render diagram.puml -o diagram.svg
moonx moonbit-community/uml_cli check diagram.puml

#Usage

uml_cli <file>           Render PlantUML and print SVG (same as `render`)
uml_cli render <file>    Render PlantUML and print SVG
uml_cli check <file>     Parse PlantUML and report the detected diagram kind

render prints the SVG to stdout so it can be piped; --output/-o writes it to a file instead. Exit codes: 0 on success, 1 on read/parse/render failure, 2 on usage errors.

Diagram families are detected from the source with the same per-line heuristics PlantUML uses to pick a diagram factory: sequence, class, use case, mindmap, JSON, YAML, and TOML today, with object, state, component, and activity under construction. check names the detected family:

$ uml_cli check hello.puml
hello.puml: OK (sequence diagram)

#Run from source

moon runwasm . -- diagram.puml          # in this directory
moon run --target native . -- --help    # native build

The cram tests in tests/cram/uml_cli.md document the exact CLI behavior; run them with moon cram test --release tests/cram.

Source Files

main.mbt

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