Layout is a rust library and a stand alone utility that draws graphs. Layout can parse Graphviz dot files and render them.
Add the following to Cargo.toml:
layout-rs = "0.1.1" # or
layout-rs = { version = "0.1.1", features = ["log"] }Load, parse and print the AST:
use layout::gv;
let contents = "digraph { a -> b [label=\"foo\"]; }";
let mut parser = gv::DotParser::new(&contents);
match parser.process() {
Ok(g) => gv::dump_ast(&g),
Err(err) => {
parser.print_error();
# #[cfg(feature = "log")]
log::error!("Error: {}", err);
}
}The example above would print the program AST, or a readable error message, such as:
digraph {
node [fillcolor="purple"] A B;
node [fillcolor="orange"] Z;
node [fillcolor="green"] G; a = ;
^
Error: Expected an identifier.Build the crate and render some dot files with the command
cargo run --bin run ./inputs/bk.dot -o output.svgThis section presents a few graphs that were rendered from dot files:
A simple graph.
A simple graph with multiple shapes and labels.
A graph with a few style properties.
A large graph that demonstrates the edge crossing elimination optimization.
Unicode, emoji and right-to-left languages:
Support for Records (nested structures):
Debug-mode rendering that helps to visualize the layout decisions:
