Add list-pages command

brood/src/commands/list_pages.rs

@@ -0,0 +1,23 @@
+use std::fs::File;
+use std::io::{self, BufReader};
+use std::path::Path;
+
+use crate::data::AdjacencyList;
+
+pub fn run(datafile: &Path) -> io::Result<()> {
+    let mut databuf = BufReader::new(File::open(datafile)?);
+    let data = AdjacencyList::read(&mut databuf)?;
+
+    for (page_idx, page) in data.pages.iter().enumerate() {
+        if page.data.redirect {
+            for link_idx in data.link_range(page_idx as u32) {
+                let target_page = data.page(data.link(link_idx).to);
+                println!("{:?} -> {:?}", page.data.title, target_page.data.title);
+            }
+        } else {
+            println!("{:?}", page.data.title);
+        }
+    }
+
+    Ok(())
+}