add zip_with_comment for VFolder

src/util/compile.rs

@@ -15,7 +15,7 @@ use super::extendable_queue::ExtendableQueue;
 pub struct CompileOptions {
     /// Whether to compile in debug mode.
     pub(crate) debug: bool,
-
+    /// Pack format of the datapack.
     pub(crate) pack_formats: RangeInclusive<u8>,
 }
 

src/virtual_fs.rs

@@ -177,6 +177,47 @@ impl VFolder {
             }
         }
 
+        writer.set_comment("Data pack created with Shulkerbox");
+
+        writer.finish()?;
+
+        Ok(())
+    }
+
+    #[cfg(feature = "zip")]
+    /// Zip the folder and its contents into a zip archive with the given comment.
+    ///
+    /// # Errors
+    /// - If the zip archive cannot be written
+    pub fn zip_with_comment<S>(&self, path: &Path, comment: S) -> io::Result<()>
+    where
+        S: Into<String>,
+    {
+        use io::Write;
+
+        // open target file
+        let file = fs::File::create(path)?;
+        let mut writer = ZipWriter::new(file);
+        let virtual_files = self.flatten();
+
+        // write each file to the zip archive
+        for (path, file) in virtual_files {
+            writer.start_file(path, zip::write::SimpleFileOptions::default())?;
+            match file {
+                VFile::Text(text) => {
+                    writer.write_all(text.as_bytes())?;
+                }
+                VFile::Binary(data) => {
+                    writer.write_all(data)?;
+                }
+            }
+        }
+
+        let comment: String = comment.into();
+        if !comment.is_empty() {
+            writer.set_comment(comment);
+        }
+
         writer.finish()?;
 
         Ok(())