tail: enable non-utf8 paths

src/uu/tail/src/args.rs

@@ -13,6 +13,7 @@ use fundu::DurationParser;
 use is_terminal::IsTerminal;
 use same_file::Handle;
 use std::collections::VecDeque;
+use std::ffi::OsString;
 use std::time::Duration;
 use uucore::error::{UResult, USimpleError, UUsageError};
 use uucore::parse_size::{parse_size, ParseSizeError};
@@ -144,7 +145,7 @@ pub struct Settings {
 }
 
 impl Settings {
-    pub fn from_obsolete_args(args: &parse::ObsoleteArgs, name: Option<&str>) -> Self {
+    pub fn from_obsolete_args(args: &parse::ObsoleteArgs, name: Option<OsString>) -> Self {
         let mut settings: Self = Self {
             sleep_sec: Duration::from_secs_f32(1.0),
             max_unchanged_stats: 5,
@@ -159,7 +160,7 @@ impl Settings {
         }
         settings.mode = FilterMode::from_obsolete_args(args);
         let input = if let Some(name) = name {
-            Input::from(name.to_string())
+            Input::from(&name)
         } else {
             Input::default()
         };
@@ -249,7 +250,7 @@ impl Settings {
 
         let mut inputs: VecDeque<Input> = matches
             .get_many::<String>(options::ARG_FILES)
-            .map(|v| v.map(|string| Input::from(string.clone())).collect())
+            .map(|v| v.map(|string| Input::from(&string)).collect())
             .unwrap_or_default();
 
         // apply default and add '-' to inputs if none is present
@@ -575,7 +576,10 @@ mod tests {
 
     #[test]
     fn test_parse_obsolete_settings_f() {
-        let args = ObsoleteArgs { follow: true, ..Default::default() };
+        let args = ObsoleteArgs {
+            follow: true,
+            ..Default::default()
+        };
         let result = Settings::from_obsolete_args(&args, None);
         assert_eq!(result.follow, Some(FollowMode::Descriptor));
 

src/uu/tail/src/paths.rs

@@ -6,6 +6,7 @@
 // spell-checker:ignore tailable seekable stdlib (stdlib)
 
 use crate::text;
+use std::ffi::OsStr;
 use std::fs::{File, Metadata};
 use std::io::{Seek, SeekFrom};
 #[cfg(unix)]
@@ -26,21 +27,21 @@ pub struct Input {
 }
 
 impl Input {
-    // TODO: from &str may be the better choice
-    pub fn from(string: String) -> Self {
-        let kind = if string == text::DASH {
+    pub fn from<T: AsRef<OsStr>>(string: &T) -> Self {
+        let valid_string = string.as_ref().to_str();
+        let kind = if valid_string.is_some() && valid_string.unwrap() == text::DASH {
             InputKind::Stdin
         } else {
-            InputKind::File(PathBuf::from(&string))
+            InputKind::File(PathBuf::from(string.as_ref()))
         };
 
         let display_name = match kind {
-            InputKind::File(_) => string,
+            InputKind::File(_) => string.as_ref().to_string_lossy().to_string(),
             InputKind::Stdin => {
                 if cfg!(unix) {
                     text::STDIN_HEADER.to_string()
                 } else {
-                    string
+                    string.as_ref().to_string_lossy().to_string()
                 }
             }
         };

tests/by-util/test_tail.rs

@@ -4768,7 +4768,6 @@ fn test_obsolete_encoding_unix() {
 
     let scene = TestScenario::new(util_name!());
     let invalid_utf8_arg = OsStr::from_bytes(&[b'-', INVALID_UTF8, b'b']);
-    let valid_utf8_arg = OsStr::from_bytes(&[b'-', b'b']);
 
     scene
         .ucmd()
@@ -4777,13 +4776,6 @@ fn test_obsolete_encoding_unix() {
         .no_stdout()
         .stderr_is("tail: bad argument encoding: '-<2D>b'\n")
         .code_is(1);
-    scene
-        .ucmd()
-        .args(&[valid_utf8_arg, invalid_utf8_arg])
-        .fails()
-        .no_stdout()
-        .stderr_is("tail: bad argument encoding\n")
-        .code_is(1);
 }
 
 #[test]
@@ -4794,7 +4786,6 @@ fn test_obsolete_encoding_windows() {
 
     let scene = TestScenario::new(util_name!());
     let invalid_utf16_arg = OsString::from_wide(&['-' as u16, INVALID_UTF16, 'b' as u16]);
-    let valid_utf16_arg = OsString::from("-b");
 
     scene
         .ucmd()
@@ -4803,11 +4794,4 @@ fn test_obsolete_encoding_windows() {
         .no_stdout()
         .stderr_is("tail: bad argument encoding: '-<2D>b'\n")
         .code_is(1);
-    scene
-        .ucmd()
-        .args(&[&valid_utf16_arg, &invalid_utf16_arg])
-        .fails()
-        .no_stdout()
-        .stderr_is("tail: bad argument encoding\n")
-        .code_is(1);
 }