IO import changes

build.rs

@@ -12,7 +12,7 @@
 
 extern crate datetime;
 use std::env;
-use std::io::Result as IOResult;
+use std::io;
 
 
 fn git_hash() -> String {
@@ -46,7 +46,7 @@ fn build_date() -> String {
     format!("{}", now.date().iso())
 }
 
-fn write_statics() -> IOResult<()> {
+fn write_statics() -> io::Result<()> {
     use std::fs::File;
     use std::io::Write;
     use std::path::PathBuf;

src/fs/dir.rs

@@ -1,6 +1,6 @@
 use crate::fs::feature::git::GitCache;
 use crate::fs::fields::GitStatus;
-use std::io::{self, Result as IOResult};
+use std::io;
 use std::fs;
 use std::path::{Path, PathBuf};
 use std::slice::Iter as SliceIter;
@@ -35,7 +35,7 @@ impl Dir {
     /// The `read_dir` iterator doesn’t actually yield the `.` and `..`
     /// entries, so if the user wants to see them, we’ll have to add them
     /// ourselves after the files have been read.
-    pub fn read_dir(path: PathBuf) -> IOResult<Self> {
+    pub fn read_dir(path: PathBuf) -> io::Result<Self> {
         info!("Reading directory {:?}", &path);
 
         let contents = fs::read_dir(&path)?

src/fs/file.rs

@@ -1,7 +1,6 @@
 //! Files, and methods and fields to access their metadata.
 
-use std::io::Error as IOError;
-use std::io::Result as IOResult;
+use std::io;
 use std::os::unix::fs::{FileTypeExt, MetadataExt, PermissionsExt};
 use std::path::{Path, PathBuf};
 use std::time::{Duration, SystemTime, UNIX_EPOCH};
@@ -67,7 +66,7 @@ pub struct File<'dir> {
 }
 
 impl<'dir> File<'dir> {
-    pub fn from_args<PD, FN>(path: PathBuf, parent_dir: PD, filename: FN) -> IOResult<File<'dir>>
+    pub fn from_args<PD, FN>(path: PathBuf, parent_dir: PD, filename: FN) -> io::Result<File<'dir>>
     where PD: Into<Option<&'dir Dir>>,
           FN: Into<Option<String>>
     {
@@ -82,7 +81,7 @@ impl<'dir> File<'dir> {
         Ok(File { path, parent_dir, metadata, ext, name, is_all_all })
     }
 
-    pub fn new_aa_current(parent_dir: &'dir Dir) -> IOResult<File<'dir>> {
+    pub fn new_aa_current(parent_dir: &'dir Dir) -> io::Result<File<'dir>> {
         let path       = parent_dir.path.to_path_buf();
         let ext        = File::ext(&path);
 
@@ -94,7 +93,7 @@ impl<'dir> File<'dir> {
         Ok(File { path, parent_dir, metadata, ext, name: ".".into(), is_all_all })
     }
 
-    pub fn new_aa_parent(path: PathBuf, parent_dir: &'dir Dir) -> IOResult<File<'dir>> {
+    pub fn new_aa_parent(path: PathBuf, parent_dir: &'dir Dir) -> io::Result<File<'dir>> {
         let ext        = File::ext(&path);
 
         debug!("Statting file {:?}", &path);
@@ -162,7 +161,7 @@ impl<'dir> File<'dir> {
     ///
     /// Returns an IO error upon failure, but this shouldn’t be used to check
     /// if a `File` is a directory or not! For that, just use `is_directory()`.
-    pub fn to_dir(&self) -> IOResult<Dir> {
+    pub fn to_dir(&self) -> io::Result<Dir> {
         Dir::read_dir(self.path.clone())
     }
 
@@ -459,10 +458,10 @@ pub enum FileTarget<'dir> {
     /// There was an IO error when following the link. This can happen if the
     /// file isn’t a link to begin with, but also if, say, we don’t have
     /// permission to follow it.
-    Err(IOError),
+    Err(io::Error),
 
     // Err is its own variant, instead of having the whole thing be inside an
-    // `IOResult`, because being unable to follow a symlink is not a serious
+    // `io::Result`, because being unable to follow a symlink is not a serious
     // error — we just display the error message and move on.
 }
 

src/main.rs

@@ -3,7 +3,7 @@
 
 use std::env;
 use std::ffi::{OsStr, OsString};
-use std::io::{stdout, Stdout, stderr, Write, Result as IOResult, ErrorKind};
+use std::io::{self, Write, ErrorKind};
 use std::path::{Component, PathBuf};
 
 use ansi_term::{ANSIStrings, Style};
@@ -40,7 +40,7 @@ fn main() {
             }
 
             let git = git_options(&options, &input_paths);
-            let writer = stdout();
+            let writer = io::stdout();
             let exa = Exa { options, writer, input_paths, git };
 
             match exa.run() {
@@ -88,7 +88,7 @@ pub struct Exa<'args> {
     pub options: Options,
 
     /// The output handle that we write to.
-    pub writer: Stdout,
+    pub writer: io::Stdout,
 
     /// List of the free command-line arguments that should correspond to file
     /// names (anything that isn’t an option).
@@ -122,7 +122,7 @@ fn git_options(options: &Options, args: &[&OsStr]) -> Option<GitCache> {
 }
 
 impl<'args> Exa<'args> {
-    pub fn run(mut self) -> IOResult<i32> {
+    pub fn run(mut self) -> io::Result<i32> {
         debug!("Running with options: {:#?}", self.options);
 
         let mut files = Vec::new();
@@ -133,14 +133,14 @@ impl<'args> Exa<'args> {
             match File::from_args(PathBuf::from(file_path), None, None) {
                 Err(e) => {
                     exit_status = 2;
-                    writeln!(stderr(), "{:?}: {}", file_path, e)?;
+                    writeln!(io::stderr(), "{:?}: {}", file_path, e)?;
                 }
 
                 Ok(f) => {
                     if f.points_to_directory() && ! self.options.dir_action.treat_dirs_as_files() {
                         match f.to_dir() {
                             Ok(d)   => dirs.push(d),
-                            Err(e)  => writeln!(stderr(), "{:?}: {}", file_path, e)?,
+                            Err(e)  => writeln!(io::stderr(), "{:?}: {}", file_path, e)?,
                         }
                     }
                     else {
@@ -163,7 +163,7 @@ impl<'args> Exa<'args> {
         self.print_dirs(dirs, no_files, is_only_dir, exit_status)
     }
 
-    fn print_dirs(&mut self, dir_files: Vec<Dir>, mut first: bool, is_only_dir: bool, exit_status: i32) -> IOResult<i32> {
+    fn print_dirs(&mut self, dir_files: Vec<Dir>, mut first: bool, is_only_dir: bool, exit_status: i32) -> io::Result<i32> {
         for dir in dir_files {
 
             // Put a gap between directories, or between the list of files and
@@ -186,7 +186,7 @@ impl<'args> Exa<'args> {
             for file in dir.files(self.options.filter.dot_filter, self.git.as_ref(), git_ignore) {
                 match file {
                     Ok(file)        => children.push(file),
-                    Err((path, e)) => writeln!(stderr(), "[{}: {}]", path.display(), e)?,
+                    Err((path, e))  => writeln!(io::stderr(), "[{}: {}]", path.display(), e)?,
                 }
             };
 
@@ -201,7 +201,7 @@ impl<'args> Exa<'args> {
                     for child_dir in children.iter().filter(|f| f.is_directory() && ! f.is_all_all) {
                         match child_dir.to_dir() {
                             Ok(d)   => child_dirs.push(d),
-                            Err(e) => writeln!(stderr(), "{}: {}", child_dir.path.display(), e)?,
+                            Err(e)  => writeln!(io::stderr(), "{}: {}", child_dir.path.display(), e)?,
                         }
                     }
 
@@ -223,7 +223,7 @@ impl<'args> Exa<'args> {
     /// Prints the list of files using whichever view is selected.
     /// For various annoying logistical reasons, each one handles
     /// printing differently...
-    fn print_files(&mut self, dir: Option<&Dir>, files: Vec<File>) -> IOResult<()> {
+    fn print_files(&mut self, dir: Option<&Dir>, files: Vec<File>) -> io::Result<()> {
         if files.is_empty() {
             return Ok(());
         }

src/output/details.rs

@@ -60,7 +60,7 @@
 //! can be displayed, in order to make sure that every column is wide enough.
 
 
-use std::io::{Write, Error as IOError, Result as IOResult};
+use std::io::{self, Write};
 use std::mem::MaybeUninit;
 use std::path::PathBuf;
 use std::vec::IntoIter as VecIntoIter;
@@ -135,7 +135,7 @@ pub struct Render<'a> {
 struct Egg<'a> {
     table_row: Option<TableRow>,
     xattrs:    Vec<Attribute>,
-    errors:    Vec<(IOError, Option<PathBuf>)>,
+    errors:    Vec<(io::Error, Option<PathBuf>)>,
     dir:       Option<Dir>,
     file:      &'a File<'a>,
     icon:      Option<String>,
@@ -149,7 +149,7 @@ impl<'a> AsRef<File<'a>> for Egg<'a> {
 
 
 impl<'a> Render<'a> {
-    pub fn render<W: Write>(self, mut git: Option<&'a GitCache>, w: &mut W) -> IOResult<()> {
+    pub fn render<W: Write>(self, mut git: Option<&'a GitCache>, w: &mut W) -> io::Result<()> {
         let mut pool = Pool::new(num_cpus::get() as u32);
         let mut rows = Vec::new();
 
@@ -357,7 +357,7 @@ impl<'a> Render<'a> {
         }
     }
 
-    fn render_error(&self, error: &IOError, tree: TreeParams, path: Option<PathBuf>) -> Row {
+    fn render_error(&self, error: &io::Error, tree: TreeParams, path: Option<PathBuf>) -> Row {
         use crate::output::file_name::Colours;
 
         let error_message = match path {

src/output/grid.rs

@@ -1,4 +1,4 @@
-use std::io::{Write, Result as IOResult};
+use std::io::{self, Write};
 
 use term_grid as tg;
 
@@ -32,7 +32,7 @@ pub struct Render<'a> {
 }
 
 impl<'a> Render<'a> {
-    pub fn render<W: Write>(&self, w: &mut W) -> IOResult<()> {
+    pub fn render<W: Write>(&self, w: &mut W) -> io::Result<()> {
         let mut grid = tg::Grid::new(tg::GridOptions {
             direction:  self.opts.direction(),
             filling:    tg::Filling::Spaces(2),

src/output/grid_details.rs

@@ -1,6 +1,6 @@
 //! The grid-details view lists several details views side-by-side.
 
-use std::io::{Write, Result as IOResult};
+use std::io::{self, Write};
 
 use ansi_term::{ANSIGenericString, ANSIStrings};
 use term_grid as grid;
@@ -119,7 +119,7 @@ impl<'a> Render<'a> {
     // This doesn’t take an IgnoreCache even though the details one does
     // because grid-details has no tree view.
 
-    pub fn render<W: Write>(self, git: Option<&GitCache>, w: &mut W) -> IOResult<()> {
+    pub fn render<W: Write>(self, git: Option<&GitCache>, w: &mut W) -> io::Result<()> {
         if let Some((grid, width)) = self.find_fitting_grid(git) {
             write!(w, "{}", grid.fit_into_columns(width))
         }

src/output/lines.rs

@@ -1,4 +1,4 @@
-use std::io::{Write, Result as IOResult};
+use std::io::{self, Write};
 
 use ansi_term::{ANSIStrings, ANSIGenericString};
 
@@ -23,7 +23,7 @@ pub struct Render<'a> {
 }
 
 impl<'a> Render<'a> {
-    pub fn render<W: Write>(&self, w: &mut W) -> IOResult<()> {
+    pub fn render<W: Write>(&self, w: &mut W) -> io::Result<()> {
         for file in &self.files {
             let name_cell = self.render_file(file).paint();
             if self.opts.icons {