Diaview

A terminal-native diagram renderer for developers. It parses diagrams into a graph model, lays them out in Rust, and renders polished Ratatui output inline or fullscreen.

What this repo is

Diaview is an experiment in making architecture diagrams feel native to the terminal. The current renderer supports Mermaid flowcharts, grouped subgraphs, layout-owned routes, bundled shared sinks, and Ayu Dark-inspired terminal styling.

Long term, it is meant to become a visual REPL for agent-assisted architecture work: select a node, give an instruction, and send structured graph context back to an AI agent.

Architecture

+---------------+
| Mermaid input |
+-------+-------+
        |
        v
+---------------+     +----------+     +------------------+
|    Parser     | --> | Graph IR | --> | Layout + routing |
+---------------+     +----------+     +--------+---------+
                                               |
                                               v
                                      +------------------+
                                      | Ratatui renderer |
                                      +--------+---------+
                                               |
                         +---------------------+---------------------+
                         |                                           |
                         v                                           v
                fullscreen terminal                         inline ANSI output

Run

cargo run -- --inline fixtures/simple.mmd
cargo run -- --inline fixtures/complex_architecture.mmd

Docs

Start with docs/README.md, then docs/architecture.md and docs/roadmap.md.