minor changes

src/main.rs

@@ -2,9 +2,12 @@ use clap::{Args, Parser, Subcommand};
 use text_correction::utils;
 use std::time::SystemTime;
 use std::process::*;
+use std::path::Path;
+use spinners::{Spinner, Spinners};
+use log::{error, trace};
 
 #[derive(Parser)]
-#[command(name = "german word corrector")]
+#[command(name = "word corrector")]
 #[command(version, about, long_about = None)]
 #[command(next_line_help = true)]
 struct Cli {
@@ -34,7 +37,9 @@ struct FileArgs {
     #[arg(short,long)]
     list_path: String,
     #[arg(short,long)]
-    output: String
+    output: String,
+    #[arg(short,long)]
+    overwrite: bool
 }
 
 fn main() {
@@ -46,7 +51,20 @@ fn main() {
             println!("{}", out);
         },
         Commands::CorrectFile(args) => {
-            utils::correct_file_concurr(args.input.clone(), args.list_path.as_str(), args.output.clone())
+            if args.overwrite == true {
+                trace!("Overwriting old file due to cli argument.");
+                std::fs::remove_file(args.output.clone()).unwrap();
+            } else {
+                trace!("Checking whether destination is writable.");
+                let path = "./".to_owned() + args.output.as_str();
+                if Path::new(path.as_str()).exists() {
+                   error!("File already exists!");
+                   exit(1);
+                }
+            }
+            let mut sp = Spinner::new(Spinners::Dots, "Processing file...".into());
+            utils::correct_file_concurr(args.input.clone(), args.list_path.as_str(), args.output.clone());
+            sp.stop_with_message("".into());
         },
         Commands::BenchFile(args) => {
             let start_par = SystemTime::now();