1 files changed, 35 insertions, 1 deletions

diff --git a/src/minemod.rs b/src/minemod.rs
index 6af50e3..d90605c 100644
--- a/src/minemod.rs
+++ b/src/minemod.rs
@@ -126,15 +126,39 @@ impl Modpack {
         }
         Ok(mods)
     }
+
+    /// Copies the modpack to the given path.
+    ///
+    /// Note that the path should not include the modpack directory, that will be appended
+    /// automatically.
+    ///
+    /// Returns a new [`Modpack`] object pointing to the copy.
+    pub fn copy_to<P: AsRef<Path>>(&self, path: P) -> Result<Modpack> {
+        let mut options = CopyOptions::new();
+        options.content_only = true;
+        let path = path.as_ref().join(self.name()?);
+        fs::create_dir_all(&path)?;
+        dir::copy(&self.path, &path, &options)?;
+        Modpack::open(&path)
+    }
+}
+
+impl fmt::Display for Modpack {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "{} (pack)", self.name().map_err(|_| fmt::Error)?)
+    }
 }
 
 /// A thing that can contain mods.
-pub trait ModContainer: Any {
+pub trait ModContainer: Any + fmt::Display {
     /// Returns the name of the mod container.
     fn name(&self) -> Result<String>;
 
     /// Return all contained mods.
     fn mods(&self) -> Result<Vec<MineMod>>;
+
+    /// Copies the content to the given directory.
+    fn install_to(&self, path: &Path) -> Result<Box<dyn ModContainer>>;
 }
 
 impl ModContainer for MineMod {
@@ -145,6 +169,11 @@ impl ModContainer for MineMod {
     fn mods(&self) -> Result<Vec<MineMod>> {
         Ok(vec![self.clone()])
     }
+
+    fn install_to(&self, path: &Path) -> Result<Box<dyn ModContainer>> {
+        self.copy_to(path)
+            .map(|x| Box::new(x) as Box<dyn ModContainer>)
+    }
 }
 
 impl ModContainer for Modpack {
@@ -155,6 +184,11 @@ impl ModContainer for Modpack {
     fn mods(&self) -> Result<Vec<MineMod>> {
         self.mods()
     }
+
+    fn install_to(&self, path: &Path) -> Result<Box<dyn ModContainer>> {
+        self.copy_to(path)
+            .map(|x| Box::new(x) as Box<dyn ModContainer>)
+    }
 }
 
 /// Attempts to open the given path as either a single mod or a modpack.