Dont restart completed files. 2.0.3 dev

Author: JohnnyFFM

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "engraver"
-version = "2.0.2"
+version = "2.0.3"
 license = "GPL-3.0"
 authors = ["PoC Consortium <bots@cryptoguru.org>"]
 description = """

Cargo.toml

@@ -173,7 +173,17 @@ impl Plotter {
             if !task.quiet {
                 print!("File already exists, reading resume info...");
             }
-            progress = read_resume_info(&file);
+            let resume_info = read_resume_info(&file);
+            match resume_info {
+                Ok(x) => progress = x,
+                Err(_) => {
+                    println!("Error");
+                    println!("File is already completed.");
+                    println!("Shutting Down...");
+                    return;
+
+                }
+            }
             if !task.quiet {
                 println!("OK");
             }

src/plotter.rs

@@ -92,7 +92,7 @@ pub fn create_writer_task(
     }
 }
 
-pub fn read_resume_info(file: &Path) -> u64 {
+pub fn read_resume_info(file: &Path) -> Result<u64,u64> {
     let mut file = open_r(&file).unwrap();
     file.seek(SeekFrom::End(-8)).unwrap();
 
@@ -103,9 +103,9 @@ pub fn read_resume_info(file: &Path) -> u64 {
     file.read_exact(&mut double_monkey[0..4]).unwrap();
 
     if double_monkey == [0xAF, 0xFE, 0xAF, 0xFE] {
-        u64::from(as_u32_le(progress))
+        Ok(u64::from(as_u32_le(progress)))
     } else {
-        0
+        Err(0)
     }
 }