1 files changed, 22 insertions, 0 deletions
diff --git a/src/main.rs b/src/main.rs
index 2950ee9..a41f801 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -8,6 +8,8 @@ pub use generate_html::*;
 use markdown::*;
 use vagabond::*;
 
+use std::collections::HashSet;
+
 
 const NORMAL: &str = "\x1b[0m";
 const BOLD:   &str = "\x1b[1m";
@@ -55,6 +57,25 @@ fn main() {
 
     let website = Website::from_path(&source_directory);
 
+    // Check for duplicate output paths for pages.
+    let mut destinations: HashSet<&str> = HashSet::new();
+    let mut duplicates: HashSet<&str> = HashSet::new();
+    for page in &website.pages {
+        if !destinations.insert(&page.full_url) {
+            duplicates.insert(&page.full_url);
+        };
+    }
+    if !duplicates.is_empty() {
+        for destination in duplicates {
+            warn!("Multiple pages have the output path {destination:?}");
+            for page in &website.pages {
+                if page.full_url == destination {
+                    eprintln!(":: {:?}", page.source_path);
+                }
+            }
+        }
+    }
+
     let mut destination = destination_directory.clone();
     destination.push(make_url_safe(&website.name));
 
@@ -64,6 +85,7 @@ fn main() {
             error!("Failed to delete existing destination directory {destination:?}"));
     }
 
+
     for page in &website.pages {
         let mut destination = destination.clone();
         destination.push(&page.full_url);