move eprints to debug, catch err on file open

src/common.rs

@@ -8,15 +8,6 @@ pub fn warning(msg: String) {
   eprintln!("{} {}", "warning:".yellow().bold(), msg)
 }
 
-pub fn verbose(level: u8, msg_lvl: u8, msg: String) {
+pub fn debug(msg: String) {
-  if level < msg_lvl {
+  eprintln!("{} {}", "debug:".purple().bold(), msg);
-    return;
-  };
-  let mut prefix = String::new();
-  for _ in 0..msg_lvl {
-    prefix += "=";
-  }
-
-  prefix += "> ";
-  eprintln!("{}{}", prefix.purple().bold(), msg);
 }

src/hashers.rs

@@ -3,8 +3,6 @@ use md5::Md5;
 use std::fs::File;
 use std::io;
 
-use crate::common;
-
 pub fn hash_md5(mut file: File) -> String {
   let mut hasher = Md5::new();
   _ = io::copy(&mut file, &mut hasher);

src/main.rs

@@ -101,14 +101,26 @@ fn hash(info: ThreadInfo) -> Result<(), String> {
     };
 
     if !*info.quiet && *info.debug {
-      eprintln!(
+      common::debug(format!(
         "thread {} is hashing file '{}'",
         info.thread_id,
         filename.as_path().display()
-      );
+      ));
     }
 
-    let file = File::open(&filename).unwrap();
+    if filename.is_dir() {
+      common::error(format!("{}: Is a directory", filename.as_path().display()));
+      continue;
+    }
+
+    let file = match File::open(&filename) {
+      Err(e) => {
+        common::error(format!("{}: {}", filename.as_path().display(), e));
+        continue;
+      },
+      Ok(f) => f
+    };
+
     let res = match &*info.algorithm.as_str() {
       "sha256" => hashers::hash_sha256(file),
       "sha384" => hashers::hash_sha384(file),
@@ -123,7 +135,7 @@ fn hash(info: ThreadInfo) -> Result<(), String> {
   }
 
   if !*info.quiet && *info.debug {
-    eprintln!("thread {} has ran out of work", info.thread_id);
+    common::debug(format!("thread {} has ran out of work", info.thread_id));
   }
 
   Ok(())
@@ -150,7 +162,7 @@ fn main() {
   };
 
   if args.debug {
-    eprintln!("Starting psha using algorithm {} with {} threads", args.algorithm, cpus)
+    common::debug(format!("Starting psha using algorithm {} with {} threads", args.algorithm, cpus));
   }
 
   if UNSECURE_ALGORITHMS.contains(&args.algorithm.as_str()) {