Update examples

examples/advanced.rs

@@ -1,10 +1,7 @@
 /// A program that prints its own source code using the bat library
 use bat::{LineRange, PrettyPrinter, WrappingMode};
-use std::ffi::OsStr;
 
 fn main() {
-    let path_to_this_file = OsStr::new(file!());
-
     PrettyPrinter::new()
         .header(true)
         .grid(true)
@@ -14,7 +11,7 @@ fn main() {
         .highlight(LineRange::new(line!() as usize, line!() as usize))
         .theme("1337")
         .wrapping_mode(WrappingMode::Character)
-        .input_file(path_to_this_file)
+        .input_file(file!())
         .print()
         .expect("no errors");
 }

examples/simple.rs

@@ -1,12 +1,9 @@
 /// A simple program that prints its own source code using the bat library
 use bat::PrettyPrinter;
-use std::ffi::OsStr;
 
 fn main() {
-    let path_to_this_file = OsStr::new(file!());
-
     PrettyPrinter::new()
-        .input_file(path_to_this_file)
+        .input_file(file!())
         .print()
         .expect("no errors");
 }

src/pretty_printer.rs

@@ -55,8 +55,8 @@ impl<'a> PrettyPrinter<'a> {
     }
 
     /// Add a file which should be pretty-printed
-    pub fn input_file(&mut self, path: &OsStr) -> &mut Self {
-        self.inputs.push(Input::ordinary_file(path));
+    pub fn input_file(&mut self, path: impl AsRef<OsStr>) -> &mut Self {
+        self.inputs.push(Input::ordinary_file(path.as_ref()));
         self
     }