From 4c770b582bddaa0c4bcef4dad21fc09feacd4d3d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mikrut?=
 <41945903+qarmin@users.noreply.github.com>
Date: Mon, 22 Feb 2021 20:14:33 +0100
Subject: [PATCH] Add option to not ignore hard links (#273)

---
 czkawka_cli/src/commands.rs   |  8 ++++++++
 czkawka_cli/src/main.rs       |  2 ++
 czkawka_core/src/duplicate.rs | 15 ++++++++++++++-
 3 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/czkawka_cli/src/commands.rs b/czkawka_cli/src/commands.rs
index abda895..ed314f0 100644
--- a/czkawka_cli/src/commands.rs
+++ b/czkawka_cli/src/commands.rs
@@ -30,6 +30,8 @@ pub enum Commands {
         file_to_save: FileToSave,
         #[structopt(flatten)]
         not_recursive: NotRecursive,
+        #[structopt(flatten)]
+        allow_hard_links: AllowHardLinks,
     },
     #[structopt(name = "empty-folders", about = "Finds empty folders", help_message = HELP_MESSAGE, after_help = "EXAMPLE:\n    czkawka empty-folders -d /home/rafal/rr /home/gateway -f results.txt")]
     EmptyFolders {
@@ -227,6 +229,12 @@ pub struct FileToSave {
     pub file_to_save: Option<PathBuf>,
 }
 
+#[derive(Debug, StructOpt)]
+pub struct AllowHardLinks {
+    #[structopt(short = "L", long, help = "Do not ignore hard links")]
+    pub allow_hard_links: bool,
+}
+
 impl FileToSave {
     pub fn file_name(&self) -> Option<&str> {
         if let Some(file_name) = &self.file_to_save {
diff --git a/czkawka_cli/src/main.rs b/czkawka_cli/src/main.rs
index e599813..b74cc0b 100644
--- a/czkawka_cli/src/main.rs
+++ b/czkawka_cli/src/main.rs
@@ -39,6 +39,7 @@ fn main() {
             hash_type,
             file_to_save,
             not_recursive,
+            allow_hard_links,
         } => {
             let mut df = DuplicateFinder::new();
 
@@ -51,6 +52,7 @@ fn main() {
             df.set_delete_method(delete_method);
             df.set_hash_type(hash_type);
             df.set_recursive_search(!not_recursive.not_recursive);
+            df.set_ignore_hard_links(!allow_hard_links.allow_hard_links);
 
             df.find_duplicates(None, None);
 
diff --git a/czkawka_core/src/duplicate.rs b/czkawka_core/src/duplicate.rs
index 5e6f089..65e2359 100644
--- a/czkawka_core/src/duplicate.rs
+++ b/czkawka_core/src/duplicate.rs
@@ -148,6 +148,7 @@ pub struct DuplicateFinder {
     check_method: CheckingMethod,
     delete_method: DeleteMethod,
     hash_type: HashType,
+    ignore_hard_links: bool,
     stopped_search: bool,
 }
 
@@ -167,6 +168,7 @@ impl DuplicateFinder {
             directories: Directories::new(),
             excluded_items: ExcludedItems::new(),
             stopped_search: false,
+            ignore_hard_links: true,
             hash_type: HashType::Blake3,
         }
     }
@@ -237,6 +239,10 @@ impl DuplicateFinder {
         self.hash_type = hash_type;
     }
 
+    pub fn set_ignore_hard_links(&mut self, ignore_hard_links: bool) {
+        self.ignore_hard_links = ignore_hard_links;
+    }
+
     pub fn set_check_method(&mut self, check_method: CheckingMethod) {
         self.check_method = check_method;
     }
@@ -596,7 +602,14 @@ impl DuplicateFinder {
             if vec.len() <= 1 {
                 continue;
             }
-            let vector = filter_hard_links(vec);
+
+            let vector;
+            if self.ignore_hard_links {
+                vector = filter_hard_links(vec);
+            } else {
+                vector = vec.clone();
+            }
+
             if vector.len() > 1 {
                 self.information.number_of_duplicated_files_by_size += vector.len() - 1;
                 self.information.number_of_groups_by_size += 1;