Teach legdur to understand file moves

Cargo.lock

@@ -290,7 +290,7 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "legdur"
-version = "0.2.2"
+version = "0.3.0"
 dependencies = [
  "camino",
  "hex",

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 authors = ["Cyryl Płotnicki <cyplo@cyplo.dev>"]
 name = "legdur"
-version = "0.2.3"
+version = "0.3.0"
 edition = "2021"
 rust-version = "1.56"
 license = "AGPL-3.0"

README.md

@@ -31,7 +31,7 @@ finished:
 ## How it works
 
 * it will compute a hash of each file present in the directory structure (it works recursively).
-* if previously computed `legdur.db` exists it will compare the current state of the world to the one represented by `legdur.db` and output any differences. Only files that changed or got deleted get printed out, additions are not.
+* if previously computed `legdur.db` exists it will compare the current state of the world to the one represented by `legdur.db` and output any differences. Only files that changed or got deleted get printed out, additions or file moves anywhere within the directory are not.
 * it will move the current `legdur.db` to `legdur.old` and write the new state of the world to a new `legdur.db`
 
 ## Contact & contributions

src/main.rs

@@ -56,7 +56,18 @@ fn compare_with_old(old_database_path: &Utf8PathBuf, database_path: &Utf8PathBuf
         old_db
             .into_par_iter()
             .for_each(|(key, old_value)| match new_db.get(&key) {
-                None => warn!("{key} does not exist anymore"),
+                None => {
+                    // FIXME probably better to store reverse hash in db as well
+                    // instead of searching every time
+                    match new_db
+                        .par_iter()
+                        .find_any(|(_, new_value)| *new_value == &old_value)
+                    {
+                        Some(_) => { //file moved elsewhere but still exists
+                        }
+                        None => warn!("{key} does not exist anymore"),
+                    }
+                }
                 Some(new_value) => {
                     if new_value != &old_value {
                         warn!("{key}: {old_value} -> {new_value}")