Remove petgraph

brood/src/commands/path_petgraph.rs

@@ -1,77 +0,0 @@
-use std::{
-    fs::File,
-    io::{self, BufReader},
-    path::Path,
-};
-
-use petgraph::{
-    algo,
-    graph::NodeIndex,
-    visit::{EdgeRef, IntoNodeReferences},
-    Graph,
-};
-
-use crate::{
-    data::{
-        info::{LinkInfo, PageInfo},
-        store,
-    },
-    util::{self, normalize_link},
-};
-
-pub fn find_index_of_title(graph: &Graph<PageInfo, LinkInfo>, title: &str) -> NodeIndex {
-    let title = util::normalize_link(title);
-    graph
-        .node_references()
-        .find(|(_, nw)| normalize_link(&nw.title) == title)
-        .map(|(ni, _)| ni)
-        .expect("invalid title")
-}
-
-pub fn resolve_redirects(graph: &Graph<PageInfo, LinkInfo>, mut page: NodeIndex) -> NodeIndex {
-    loop {
-        if graph.node_weight(page).unwrap().redirect {
-            if let Some(link) = graph.edges(page).next() {
-                page = link.target();
-                continue;
-            }
-        }
-        return page;
-    }
-}
-
-pub fn path(datafile: &Path, from: &str, to: &str) -> io::Result<()> {
-    println!(">> Import");
-    let mut databuf = BufReader::new(File::open(datafile)?);
-    let graph = store::read_petgraph(&mut databuf)?;
-
-    println!(">> Locate from and to");
-    let start = resolve_redirects(&graph, find_index_of_title(&graph, from));
-    let goal = resolve_redirects(&graph, find_index_of_title(&graph, to));
-    println!("From: {:?}", graph.node_weight(start).unwrap().title);
-    println!("To:   {:?}", graph.node_weight(goal).unwrap().title);
-
-    println!(">> Find path");
-    let Some((cost, path)) = algo::astar(
-        &graph,
-        start,
-        |n| n == goal,
-        |e| !graph.node_weight(e.source()).unwrap().redirect as u32,
-        |_| 0,
-    ) else {
-        println!("No path found");
-        return Ok(());
-    };
-
-    println!("Path found (cost {cost}, length {}):", path.len());
-    for page in path {
-        let page = graph.node_weight(page).unwrap();
-        if page.redirect {
-            println!(" v {:?}", page.title);
-        } else {
-            println!(" - {:?}", page.title);
-        }
-    }
-
-    Ok(())
-}