Fix issues with backslash-paths on Windows 🏳️‍🌈🐞

fixes #10

src/main.rs

@@ -22,7 +22,8 @@ fn main() -> std::io::Result<()> {
     let file_format = matches.value_of("format").unwrap();
 
     // i/o paths
-    let input_dir = Path::new(matches.value_of("DIR").unwrap());
+    let input_dir = format_path(matches.value_of("DIR").unwrap());
+    let input_dir = Path::new(&input_dir);
     let output_list = input_dir.join("input.txt");
     let output_vid = input_dir.join(format!("output.{}", file_format));
 
@@ -122,6 +123,22 @@ fn is_ffmpeg_available() -> bool {
     }
 }
 
+fn format_path(path_to_vids: &str) -> String {
+    let path_to_vids: String = if path_to_vids.starts_with('\\') {
+        path_to_vids.replacen("\\", "", 1)
+    } else {
+        path_to_vids.into()
+    };
+
+    let path_to_vids: String = if !path_to_vids.ends_with('/') && !path_to_vids.ends_with('\\') {
+        format!("{}/", path_to_vids)
+    } else {
+        path_to_vids
+    };
+
+    path_to_vids.replace("\\", "/")
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -130,4 +147,22 @@ mod tests {
     fn test_is_ffmpeg_available() {
         assert_eq!(is_ffmpeg_available(), true);
     }
+
+    #[test]
+    fn test_format_path() {
+        assert_eq!(
+            format_path(&String::from("c:\\path\\to\\vids")),
+            "c:/path/to/vids/"
+        );
+        assert_eq!(
+            format_path(&String::from("\\path\\to\\vids")),
+            "path/to/vids/"
+        );
+        assert_eq!(
+            format_path(&String::from("\\path\\to\\vids\\")),
+            "path/to/vids/"
+        );
+        assert_eq!(format_path(&String::from("path/to/vids")), "path/to/vids/");
+        assert_eq!(format_path(&String::from("path/to/vids/")), "path/to/vids/");
+    }
 }