Added the ability to restore chunks from a backup

+ Added `restore` subcommand
+ Needs more testing, but appears to be working

src/main.rs

@@ -5,9 +5,11 @@ mod backup;
 mod config;
 mod discord;
 mod region;
+mod restore;
 
 use crate::backup::{convert_backup_to_sp, do_backup};
 use crate::config::AlbatrossConfig;
+use crate::restore::{restore_range_from_backup, restore_chunk_from_backup};
 
 #[derive(Debug, StructOpt)]
 #[structopt(about = "Backup your Minecraft Server!")]
@@ -24,13 +26,13 @@ struct Albatross {
 enum SubCommand {
     /// Backup a server
     Backup {
-        /// Output location override
+        /// Output path
         #[structopt(short = "o", long = "ouptut", parse(from_os_str))]
         output: Option<PathBuf>,
     },
     /// Export a backup as a single player world
     Export {
-        /// Convert backup to singleplayer world
+        /// Backup to convert
         #[structopt(parse(from_os_str))]
         input_backup: PathBuf,
 
@@ -38,6 +40,19 @@ enum SubCommand {
         #[structopt(parse(from_os_str))]
         output: PathBuf,
     },
+    /// Restore certain chunks from a backup
+    Restore {
+        /// Output server directory
+        #[structopt(short, long, parse(from_os_str))]
+        server_directory: Option<PathBuf>,
+        /// World to restore
+        world_name: String,
+        /// Backup to restore from
+        #[structopt(parse(from_os_str))]
+        backup_path: PathBuf,
+        /// Backup range can be a single chunk coordinate pair or a chunk range
+        chunk_range: Vec<i32>,
+    },
 }
 
 fn main() {
@@ -65,6 +80,38 @@ fn main() {
                     Err(e) => println!("Error exporting backup: {:?}", e),
                 };
             }
+            SubCommand::Restore {
+                server_directory,
+                world_name,
+                backup_path,
+                chunk_range
+            } => {
+                println!("Starting restore");
+
+                let server_directory = match server_directory {
+                    Some(dir) => dir,
+                    None => cfg.backup.minecraft_dir
+                };
+
+                if chunk_range.len() > 2 {
+                    let lower_x = chunk_range[0];
+                    let lower_z = chunk_range[1];
+                    let upper_x = chunk_range[2];
+                    let upper_z = chunk_range[3];
+                    match restore_range_from_backup(world_name.as_str(), lower_x, upper_x, lower_z, upper_z, &backup_path, &server_directory) {
+                        Ok(count) => println!("Restored {} chunks!", count),
+                        Err(e) => println!("Error restoring backup: {:?}", e),
+                    };
+                }
+                else if chunk_range.len() == 2 {
+                    let x = chunk_range[0];
+                    let z = chunk_range[1];
+                    match restore_chunk_from_backup(world_name.as_str(), x, z, &backup_path, &server_directory) {
+                        Ok(_) => println!("Restored chunk!"),
+                        Err(e) => println!("Error restoring backup: {:?}", e),
+                    };
+                }
+            }
         }
     } else {
         println!("No worlds specified in config file!")