feat: add user & group on foot and make linemode configturable and more options (#385)

* add user & group on footer

* linemode have more options

* linemode have more options

* linemode have more options

12 files changed, 132 insertions, 49 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 994e4a3..bc0982a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -80,6 +80,9 @@ name = "bitflags"
 version = "2.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "630be753d4e58660abd17930c71b647fe46c27ea6b63cc59e1e3851406972e42"
+dependencies = [
+ "serde",
+]
 
 [[package]]
 name = "bstr"
@@ -471,6 +474,7 @@ version = "0.9.5"
 dependencies = [
  "alphanumeric-sort",
  "ansi-to-tui",
+ "bitflags 2.3.3",
  "chrono",
  "colors-transform",
  "dirs-next",
@@ -478,6 +482,7 @@ dependencies = [
  "globset",
  "lazy_static",
  "libc",
+ "nix",
  "notify",
  "open",
  "phf",
@@ -495,7 +500,6 @@ dependencies = [
  "trash",
  "unicode-segmentation",
  "unicode-width",
- "users",
  "uuid",
  "walkdir",
  "whoami",
@@ -1265,16 +1269,6 @@ dependencies = [
 ]
 
 [[package]]
-name = "users"
-version = "0.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24cc0f6d6f267b73e5a2cadf007ba8f9bc39c6a6f9666f8cf25ea809a153b032"
-dependencies = [
- "libc",
- "log",
-]
-
-[[package]]
 name = "utf8parse"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
diff --git a/Cargo.toml b/Cargo.toml
index c6323e3..3d3b796 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,7 +27,7 @@ rustyline = "^12"
 serde = "^1"
 serde_derive = "^1"
 shell-words = "^1"
-shellexpand = { version = "^3", features = ["full"]}
+shellexpand = { version = "^3", features = ["full"] }
 signal-hook = "^0"
 structopt = "^0"
 termion = "^2"
@@ -35,10 +35,15 @@ toml = "^0"
 trash = { version = "^3", optional = true }
 unicode-segmentation = "^1"
 unicode-width = "^0"
-users = "^0"
 whoami = "^1"
 xdg = "^2"
 walkdir = "^2"
+bitflags = { version = "^2", features = ["serde"] }
+
+[dependencies.nix]
+version = "^0"
+default_features = false
+features = ["user"]
 
 [dependencies.ratatui]
 version = "^0"
diff --git a/config/joshuto.toml b/config/joshuto.toml
index c106057..3986e35 100644
--- a/config/joshuto.toml
+++ b/config/joshuto.toml
@@ -22,6 +22,11 @@ tilde_in_titlebar = true
 # none, absolute, relative
 line_number_style = "none"
 
+# size, mtime, user, gourp, perm. can be combined with |. 
+# `none` to disable, `all` to enable all
+# all and none can't be combined with other options
+linemode = "size"
+
 [display.sort]
 # lexical, mtime, natural, size, ext
 sort_method = "natural"
diff --git a/config/keymap.toml b/config/keymap.toml
index 5e9e6d6..8a9f371 100644
--- a/config/keymap.toml
+++ b/config/keymap.toml
@@ -119,7 +119,10 @@ keymap = [
 
   { keys = ["m", "s"], command = "linemode size" },
   { keys = ["m", "m"], command = "linemode mtime" },
-  { keys = ["m", "M"], command = "linemode sizemtime" },
+  { keys = ["m", "M"], command = "linemode size | mtime" },
+  { keys = ["m", "u"], command = "linemode user" },
+  { keys = ["m", "U"], command = "linemode user | group" },
+  { keys = ["m", "p"], command = "linemode perm" },
 
   { keys = ["g", "r"], command = "cd /" },
   { keys = ["g", "c"], command = "cd ~/.config" },
diff --git a/docs/configuration/joshuto.toml.md b/docs/configuration/joshuto.toml.md
index 4a19692..1e0ed5c 100644
--- a/docs/configuration/joshuto.toml.md
+++ b/docs/configuration/joshuto.toml.md
@@ -56,6 +56,16 @@ tilde_in_titlebar = true
 # - relative
 line_number_style = "none"
 
+# Options include
+# - size
+# - mtime
+# - user
+# - group
+# - perm
+# - none (can't be combined with other options)
+# - all (can't be combined with other options)
+linemode = "size"
+
 # Configurations related to file sorting
 [display.sort]
 # Options include
diff --git a/src/config/general/display_raw.rs b/src/config/general/display_raw.rs
index a340305..baaa101 100644
--- a/src/config/general/display_raw.rs
+++ b/src/config/general/display_raw.rs
@@ -59,6 +59,9 @@ pub struct DisplayOptionRaw {
 
     #[serde(default)]
     pub line_number_style: String,
+
+    #[serde(default)]
+    pub linemode: LineMode,
 }
 
 impl std::default::Default for DisplayOptionRaw {
@@ -75,6 +78,7 @@ impl std::default::Default for DisplayOptionRaw {
             sort_options: SortOptionRaw::default(),
             tilde_in_titlebar: true,
             line_number_style: "none".to_string(),
+            linemode: LineMode::default(),
         }
     }
 }
@@ -125,7 +129,7 @@ impl From<DisplayOptionRaw> for DisplayOption {
             default_tab_display_option: TabDisplayOption {
                 sort_options: raw.sort_options.into(),
                 // todo: make default line mode configurable
-                linemode: LineMode::Size,
+                linemode: raw.linemode,
                 ..Default::default()
             },
         }
diff --git a/src/config/option/linemodes.rs b/src/config/option/linemodes.rs
index 372a3ad..591862f 100644
--- a/src/config/option/linemodes.rs
+++ b/src/config/option/linemodes.rs
@@ -1,31 +1,62 @@
+use serde_derive::Deserialize;
+
 use crate::error::{JoshutoError, JoshutoErrorKind, JoshutoResult};
 
-#[derive(Clone, Debug, Copy, Default)]
-pub enum LineMode {
-    #[default]
-    Size,
-    MTime,
-    SizeMTime,
+bitflags::bitflags! {
+    #[derive(Clone, Copy, Debug, PartialEq, Eq, Deserialize)]
+    #[serde(transparent)]
+    pub struct LineMode: u8 {
+        const size  = 1 << 0;
+        const mtime = 1 << 1;
+        const user  = 1 << 2;
+        const group = 1 << 3;
+        const perm  = 1 << 4;
+    }
+}
+
+impl Default for LineMode {
+    fn default() -> Self {
+        Self::size
+    }
 }
 
 impl LineMode {
     pub fn from_string(name: &str) -> JoshutoResult<LineMode> {
         match name {
-            "size" => Ok(LineMode::Size),
-            "mtime" => Ok(LineMode::MTime),
-            "sizemtime" => Ok(LineMode::SizeMTime),
-            _ => Err(JoshutoError::new(
-                JoshutoErrorKind::InvalidParameters,
-                format!("Linemode '{}' unknown.", name),
-            )),
+            "all" => Ok(LineMode::all()),
+            "none" => Ok(LineMode::empty()),
+            _ => {
+                let mut flags = name.split('|');
+
+                let mut linemode = LineMode::empty();
+
+                flags.try_for_each(|flag| {
+                    match flag.trim() {
+                        "size" => linemode |= LineMode::size,
+                        "mtime" => linemode |= LineMode::mtime,
+                        "user" => linemode |= LineMode::user,
+                        "group" => linemode |= LineMode::group,
+                        "perm" => linemode |= LineMode::perm,
+                        flag => {
+                            return Err(JoshutoError::new(
+                                JoshutoErrorKind::InvalidParameters,
+                                format!("Linemode '{}' unknown.", flag),
+                            ))
+                        }
+                    }
+
+                    Ok(())
+                })?;
+
+                Ok(linemode)
+            }
         }
     }
 
-    pub fn as_str(&self) -> &'static str {
-        match self {
-            Self::Size => "size",
-            Self::MTime => "mtime",
-            Self::SizeMTime => "sizemtime",
-        }
+    pub fn as_string(&self) -> String {
+        self.iter_names()
+            .map(|f| f.0)
+            .collect::<Vec<_>>()
+            .join(" | ")
     }
 }
diff --git a/src/key_command/impl_comment.rs b/src/key_command/impl_comment.rs
index 82806f7..a7f373f 100644
--- a/src/key_command/impl_comment.rs
+++ b/src/key_command/impl_comment.rs
@@ -7,10 +7,13 @@ impl CommandComment for Command {
     // These comments are displayed at the help page
     fn comment(&self) -> &'static str {
         match self {
-            Self::SetLineMode(linemode) => match linemode {
-                LineMode::Size => "Show files with size",
-                LineMode::MTime => "Show files with modified time",
-                LineMode::SizeMTime => "Show files with size and modified time",
+            Self::SetLineMode(linemode) => match *linemode {
+                LineMode::size => "Show files with size",
+                LineMode::mtime => "Show files with modified time",
+                LineMode::user => "Show files with user",
+                LineMode::group => "Show files with group",
+                LineMode::perm => "Show files with permission",
+                _ => "Show files with multi-attribution",
             },
             Self::Escape => "Escape from visual mode (cancel)",
             Self::BulkRename => "Bulk rename",
diff --git a/src/key_command/impl_display.rs b/src/key_command/impl_display.rs
index a20031e..6049467 100644
--- a/src/key_command/impl_display.rs
+++ b/src/key_command/impl_display.rs
@@ -10,7 +10,7 @@ impl std::fmt::Display for Command {
             Self::CursorMoveUp { offset } => write!(f, "{} {}", self.command(), offset),
             Self::CursorMoveDown { offset } => write!(f, "{} {}", self.command(), offset),
 
-            Self::SetLineMode(mode) => write!(f, "{} {}", self.command(), mode.as_str()),
+            Self::SetLineMode(mode) => write!(f, "{} {}", self.command(), mode.as_string()),
 
             Self::ParentCursorMoveUp { offset } => write!(f, "{} {}", self.command(), offset),
             Self::ParentCursorMoveDown { offset } => write!(f, "{} {}", self.command(), offset),
diff --git a/src/ui/widgets/tui_dirlist_detailed.rs b/src/ui/widgets/tui_dirlist_detailed.rs
index 3373134..6e2a2a8 100644
--- a/src/ui/widgets/tui_dirlist_detailed.rs
+++ b/src/ui/widgets/tui_dirlist_detailed.rs
@@ -7,9 +7,9 @@ use ratatui::widgets::Widget;
 
 use crate::config::option::{DisplayOption, LineMode, LineNumberStyle, TabDisplayOption};
 use crate::fs::{FileType, JoshutoDirEntry, JoshutoDirList, LinkType};
-use crate::util::format;
 use crate::util::string::UnicodeTruncate;
 use crate::util::style;
+use crate::util::{format, unix};
 use unicode_width::UnicodeWidthStr;
 
 const MIN_LEFT_LABEL_WIDTH: i32 = 15;
@@ -144,15 +144,18 @@ fn print_entry(
     let right_label_original = format!(
         " {}{} ",
         symlink_string,
-        match linemode {
-            LineMode::Size => get_entry_size_string(entry),
-            LineMode::MTime => format::mtime_to_string(entry.metadata.modified()),
-            LineMode::SizeMTime => format!(
-                "{} {}",
-                get_entry_size_string(entry),
-                format::mtime_to_string(entry.metadata.modified())
-            ),
-        }
+        linemode
+            .iter_names()
+            .map(|f| match f.0 {
+                "size" => get_entry_size_string(entry),
+                "mtime" => format::mtime_to_string(entry.metadata.modified()),
+                "user" => unix::uid_to_string(entry.metadata.uid).unwrap_or("unknown".into()),
+                "group" => unix::gid_to_string(entry.metadata.gid).unwrap_or("unknown".into()),
+                "perm" => unix::mode_to_string(entry.metadata.mode),
+                _ => unreachable!(),
+            })
+            .collect::<Vec<_>>()
+            .join(" ")
     );
 
     // draw prefix first
diff --git a/src/ui/widgets/tui_footer.rs b/src/ui/widgets/tui_footer.rs
index dc42ee6..16c4ac4 100644
--- a/src/ui/widgets/tui_footer.rs
+++ b/src/ui/widgets/tui_footer.rs
@@ -49,6 +49,9 @@ impl<'a> Widget for TuiFooter<'a> {
 
                 let mode_str = unix::mode_to_string(entry.metadata.permissions_ref().mode());
 
+                let user_str = unix::uid_to_string(entry.metadata.uid).unwrap_or("unknown".into());
+                let group_str = unix::gid_to_string(entry.metadata.gid).unwrap_or("unknown".into());
+
                 let mtime_str = format::mtime_to_string(entry.metadata.modified());
                 let size_str = format::file_size_to_string(entry.metadata.len());
 
@@ -70,6 +73,10 @@ impl<'a> Widget for TuiFooter<'a> {
                     }),
                     Span::styled(mode_str, mode_style),
                     Span::raw("  "),
+                    Span::raw(user_str),
+                    Span::raw(" "),
+                    Span::raw(group_str),
+                    Span::raw("  "),
                     Span::raw(format!("{}/{}", i + 1, self.dirlist.len())),
                     Span::raw("  "),
                     Span::raw(mtime_str),
diff --git a/src/util/unix.rs b/src/util/unix.rs
index ac66e2b..61d41fb 100644
--- a/src/util/unix.rs
+++ b/src/util/unix.rs
@@ -67,3 +67,21 @@ pub fn expand_shell_string(s: &str) -> path::PathBuf {
     let tilde_path = path::PathBuf::from(tilde_cow.as_ref());
     tilde_path
 }
+
+pub fn uid_to_string(uid: u32) -> Option<String> {
+    use nix::unistd::{Uid, User};
+
+    match User::from_uid(Uid::from(uid)) {
+        Ok(Some(user)) => Some(user.name),
+        _ => None,
+    }
+}
+
+pub fn gid_to_string(gid: u32) -> Option<String> {
+    use nix::unistd::{Gid, Group};
+
+    match Group::from_gid(Gid::from(gid)) {
+        Ok(Some(group)) => Some(group.name),
+        _ => None,
+    }
+}