refactor table system (#132)

* init table trait

* add shrink_col_index and max_width method to Table trait

* make unicodes work when shrinking

* improve readability of the table

* replace old table system with new one

* update changelog

CHANGELOG.md

@@ -26,6 +26,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Vim table containing emoji [#122]
 - IDLE mode after network interruption [#123]
 - Output redirected to `stderr` [#130]
+- Refactor table system [#132]
 
 ## [0.2.6] - 2021-04-17
 
@@ -209,3 +210,4 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [#125]: https://github.com/soywod/himalaya/issues/125
 [#126]: https://github.com/soywod/himalaya/issues/126
 [#130]: https://github.com/soywod/himalaya/issues/130
+[#132]: https://github.com/soywod/himalaya/issues/132

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "himalaya"
-description = "📫 The CLI email client."
+description = "📫 CLI email client"
 version = "0.2.7"
 authors = ["soywod <clement.douin@posteo.net>"]
 edition = "2018"
@@ -16,10 +16,10 @@ log = "0.4.14"
 mailparse = "0.13.1"
 native-tls = "0.2"
 rfc2047-decoder = "0.1.2"
-serde = { version = "1.0.118", features = ["derive"] }
+serde = {version = "1.0.118", features = ["derive"]}
 serde_json = "1.0.61"
 terminal_size = "0.1.15"
 toml = "0.5.8"
 tree_magic = "0.2.3"
 unicode-width = "0.1.7"
-uuid = { version = "0.8", features = ["v4"] }
+uuid = {version = "0.8", features = ["v4"]}

README.md

@@ -1,6 +1,6 @@
 # 📫 Himalaya [![gh-actions](https://github.com/soywod/himalaya/workflows/deployment/badge.svg)](https://github.com/soywod/himalaya/actions?query=workflow%3Adeployment)
 
-The CLI email client.
+CLI email client written in Rust.
 
 *The project is under active development. Do not use in production before the
 `v1.0.0` (see the [roadmap](https://github.com/soywod/himalaya/milestone/5)).*

flake.nix

@@ -1,5 +1,5 @@
 {
-  description = "The CLI email client.";
+  description = "📫 CLI email client";
 
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";

src/flag/model.rs

@@ -43,11 +43,11 @@ impl<'f> ToString for Flags<'f> {
         flags.push_str(if self.0.contains(&Flag::Seen) {
             " "
         } else {
-            "🟓"
+            "✷"
         });
 
         flags.push_str(if self.0.contains(&Flag::Answered) {
-            "↩"
+            "↵"
         } else {
             " "
         });

src/mbox/model.rs

@@ -4,7 +4,7 @@ use std::fmt;
 
 use crate::{
     output::fmt::{get_output_fmt, OutputFmt, Response},
-    table::{self, DisplayRow, DisplayTable},
+    table::{Cell, Row, Table},
 };
 
 // Mbox
@@ -26,15 +26,25 @@ impl Mbox {
     }
 }
 
-impl DisplayRow for Mbox {
+impl Table for Mbox {
-    fn to_row(&self) -> Vec<table::Cell> {
+    fn head() -> Row {
-        use crate::table::*;
+        Row::new()
+            .cell(Cell::new("DELIM").bold().underline().white())
+            .cell(Cell::new("NAME").bold().underline().white())
+            .cell(
+                Cell::new("ATTRIBUTES")
+                    .shrinkable()
+                    .bold()
+                    .underline()
+                    .white(),
+            )
+    }
 
-        vec![
+    fn row(&self) -> Row {
-            Cell::new(&[BLUE], &self.delim),
+        Row::new()
-            Cell::new(&[GREEN], &self.name),
+            .cell(Cell::new(&self.delim).red())
-            FlexCell::new(&[YELLOW], &self.attributes.join(", ")),
+            .cell(Cell::new(&self.name).green())
-        ]
+            .cell(Cell::new(&self.attributes.join(", ")).shrinkable().yellow())
     }
 }
 
@@ -43,28 +53,12 @@ impl DisplayRow for Mbox {
 #[derive(Debug, Serialize)]
 pub struct Mboxes(pub Vec<Mbox>);
 
-impl<'a> DisplayTable<'a, Mbox> for Mboxes {
-    fn header_row() -> Vec<table::Cell> {
-        use crate::table::*;
-
-        vec![
-            Cell::new(&[BOLD, UNDERLINE, WHITE], "DELIM"),
-            Cell::new(&[BOLD, UNDERLINE, WHITE], "NAME"),
-            FlexCell::new(&[BOLD, UNDERLINE, WHITE], "ATTRIBUTES"),
-        ]
-    }
-
-    fn rows(&self) -> &Vec<Mbox> {
-        &self.0
-    }
-}
-
 impl fmt::Display for Mboxes {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         unsafe {
             match get_output_fmt() {
                 &OutputFmt::Plain => {
-                    writeln!(f, "\n{}", self.to_table())
+                    writeln!(f, "\n{}", Table::render(&self.0))
                 }
                 &OutputFmt::Json => {
                     let res = serde_json::to_string(&Response::new(self)).unwrap();

src/msg/model.rs

@@ -16,7 +16,7 @@ use crate::{
     config::model::{Account, Config},
     flag::model::{Flag, Flags},
     output::fmt::{get_output_fmt, OutputFmt, Response},
-    table::{self, DisplayRow, DisplayTable},
+    table::{Cell, Row, Table},
 };
 
 error_chain! {
@@ -624,23 +624,29 @@ struct MsgSpec {
     default_content: Option<Vec<String>>,
 }
 
-impl<'m> DisplayRow for Msg<'m> {
+impl<'m> Table for Msg<'m> {
-    fn to_row(&self) -> Vec<table::Cell> {
+    fn head() -> Row {
-        use crate::table::*;
+        Row::new()
+            .cell(Cell::new("UID").bold().underline().white())
+            .cell(Cell::new("FLAGS").bold().underline().white())
+            .cell(Cell::new("SUBJECT").shrinkable().bold().underline().white())
+            .cell(Cell::new("SENDER").bold().underline().white())
+            .cell(Cell::new("DATE").bold().underline().white())
+    }
 
-        let unseen = if self.flags.contains(&Flag::Seen) {
+    fn row(&self) -> Row {
-            RESET
+        let is_seen = !self.flags.contains(&Flag::Seen);
-        } else {
+        Row::new()
-            BOLD
+            .cell(Cell::new(&self.uid.to_string()).bold_if(is_seen).red())
-        };
+            .cell(Cell::new(&self.flags.to_string()).bold_if(is_seen).white())
-
+            .cell(
-        vec![
+                Cell::new(&self.subject)
-            Cell::new(&[unseen.to_owned(), RED], &self.uid.to_string()),
+                    .shrinkable()
-            Cell::new(&[unseen.to_owned(), WHITE], &self.flags.to_string()),
+                    .bold_if(is_seen)
-            FlexCell::new(&[unseen.to_owned(), GREEN], &self.subject),
+                    .green(),
-            Cell::new(&[unseen.to_owned(), BLUE], &self.sender),
+            )
-            Cell::new(&[unseen.to_owned(), YELLOW], &self.date),
+            .cell(Cell::new(&self.sender).bold_if(is_seen).blue())
-        ]
+            .cell(Cell::new(&self.date).bold_if(is_seen).yellow())
     }
 }
 
@@ -649,24 +655,6 @@ impl<'m> DisplayRow for Msg<'m> {
 #[derive(Debug, Serialize)]
 pub struct Msgs<'m>(pub Vec<Msg<'m>>);
 
-impl<'m> DisplayTable<'m, Msg<'m>> for Msgs<'m> {
-    fn header_row() -> Vec<table::Cell> {
-        use crate::table::*;
-
-        vec![
-            Cell::new(&[BOLD, UNDERLINE, WHITE], "UID"),
-            Cell::new(&[BOLD, UNDERLINE, WHITE], "FLAGS"),
-            FlexCell::new(&[BOLD, UNDERLINE, WHITE], "SUBJECT"),
-            Cell::new(&[BOLD, UNDERLINE, WHITE], "SENDER"),
-            Cell::new(&[BOLD, UNDERLINE, WHITE], "DATE"),
-        ]
-    }
-
-    fn rows(&self) -> &Vec<Msg<'m>> {
-        &self.0
-    }
-}
-
 impl<'m> From<&'m imap::types::ZeroCopy<Vec<imap::types::Fetch>>> for Msgs<'m> {
     fn from(fetches: &'m imap::types::ZeroCopy<Vec<imap::types::Fetch>>) -> Self {
         Self(fetches.iter().rev().map(Msg::from).collect::<Vec<_>>())
@@ -678,7 +666,7 @@ impl<'m> fmt::Display for Msgs<'m> {
         unsafe {
             match get_output_fmt() {
                 &OutputFmt::Plain => {
-                    writeln!(f, "\n{}", self.to_table())
+                    writeln!(f, "\n{}", Table::render(&self.0))
                 }
                 &OutputFmt::Json => {
                     let res = serde_json::to_string(&Response::new(self)).unwrap();

src/table.rs

@@ -1,30 +1,26 @@
 use std::fmt;
-use terminal_size::terminal_size;
 use unicode_width::UnicodeWidthStr;
 
-#[derive(Clone, Debug)]
+#[derive(Debug)]
 pub struct Style(u8, u8, u8);
 
 impl fmt::Display for Style {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         let Style(color, bright, shade) = self;
-
-        let bright_str: String = if *bright > 0 {
-            String::from(";") + &bright.to_string()
-        } else {
-            String::from("")
-        };
-
-        let shade_str: String = if *shade > 0 {
-            String::from(";") + &shade.to_string()
-        } else {
-            String::from("")
-        };
-
         let mut style = String::from("\x1b[");
+
         style.push_str(&color.to_string());
-        style.push_str(&bright_str);
+
-        style.push_str(&shade_str);
+        if *bright > 0 {
+            style.push_str(";");
+            style.push_str(&bright.to_string());
+        };
+
+        if *shade > 0 {
+            style.push_str(";");
+            style.push_str(&shade.to_string());
+        };
+
         style.push_str("m");
 
         write!(f, "{}", style)
@@ -33,17 +29,17 @@ impl fmt::Display for Style {
 
 #[derive(Debug)]
 pub struct Cell {
-    pub styles: Vec<Style>,
+    styles: Vec<Style>,
-    pub value: String,
+    value: String,
-    pub flex: bool,
+    shrinkable: bool,
 }
 
 impl Cell {
-    pub fn new(styles: &[Style], value: &str) -> Self {
+    pub fn new<T: AsRef<str>>(value: T) -> Self {
         Self {
-            styles: styles.to_vec(),
+            styles: Vec::new(),
-            value: value.trim().to_string(),
+            value: String::from(value.as_ref()),
-            flex: false,
+            shrinkable: false,
         }
     }
 
@@ -51,209 +47,299 @@ impl Cell {
         UnicodeWidthStr::width(self.value.as_str())
     }
 
-    pub fn render(&self, col_size: usize) -> String {
+    pub fn shrinkable(mut self) -> Self {
-        let style_begin = self
+        self.shrinkable = true;
-            .styles
+        self
-            .iter()
+    }
-            .map(|style| style.to_string())
-            .collect::<Vec<_>>()
-            .concat();
-        let style_end = "\x1b[0m";
-        let unicode_width = self.unicode_width();
 
-        if col_size > 0 && unicode_width > col_size {
+    pub fn is_shrinkable(&self) -> bool {
-            String::from(style_begin + &self.value[0..=col_size - 2] + "… " + style_end)
+        self.shrinkable
+    }
+
+    pub fn bold(mut self) -> Self {
+        self.styles.push(Style(1, 0, 0));
+        self
+    }
+
+    pub fn bold_if(self, predicate: bool) -> Self {
+        if predicate {
+            self.bold()
         } else {
-            let padding = if col_size == 0 {
+            self
-                "".to_string()
-            } else {
-                " ".repeat(col_size - unicode_width + 1)
-            };
-
-            String::from(style_begin + &self.value + &padding + style_end)
         }
     }
+
+    pub fn underline(mut self) -> Self {
+        self.styles.push(Style(4, 0, 0));
+        self
+    }
+
+    pub fn red(mut self) -> Self {
+        self.styles.push(Style(31, 0, 0));
+        self
+    }
+
+    pub fn green(mut self) -> Self {
+        self.styles.push(Style(32, 0, 0));
+        self
+    }
+
+    pub fn yellow(mut self) -> Self {
+        self.styles.push(Style(33, 0, 0));
+        self
+    }
+
+    pub fn blue(mut self) -> Self {
+        self.styles.push(Style(34, 0, 0));
+        self
+    }
+
+    pub fn white(mut self) -> Self {
+        self.styles.push(Style(37, 0, 0));
+        self
+    }
+
+    pub fn ext(mut self, shade: u8) -> Self {
+        self.styles.push(Style(38, 5, shade));
+        self
+    }
+}
+
+impl fmt::Display for Cell {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        for style in &self.styles {
+            write!(f, "{}", style)?;
+        }
+
+        write!(f, "{}", self.value)?;
+
+        if !self.styles.is_empty() {
+            write!(f, "{}", Style(0, 0, 0))?;
+        }
+
+        Ok(())
+    }
 }
 
 #[derive(Debug)]
-pub struct FlexCell;
+pub struct Row(pub Vec<Cell>);
 
-impl FlexCell {
+impl Row {
-    pub fn new(styles: &[Style], value: &str) -> Cell {
+    pub fn new() -> Self {
-        Cell {
+        Self(Vec::new())
-            flex: true,
+    }
-            ..Cell::new(styles, value)
+
+    pub fn cell(mut self, cell: Cell) -> Self {
+        self.0.push(cell);
+        self
+    }
+}
+
+pub trait Table
+where
+    Self: Sized,
+{
+    fn head() -> Row;
+    fn row(&self) -> Row;
+
+    fn max_width() -> usize {
+        terminal_size::terminal_size()
+            .map(|(w, _)| w.0 as usize)
+            .unwrap_or_default()
+    }
+
+    fn build(items: &[Self]) -> Vec<Vec<String>> {
+        let mut table = vec![Self::head()];
+        let mut cell_widths: Vec<usize> =
+            table[0].0.iter().map(|cell| cell.unicode_width()).collect();
+        table.extend(
+            items
+                .iter()
+                .map(|item| {
+                    let row = item.row();
+                    row.0.iter().enumerate().for_each(|(i, cell)| {
+                        cell_widths[i] = cell_widths[i].max(cell.unicode_width());
+                    });
+                    row
+                })
+                .collect::<Vec<_>>(),
+        );
+
+        let spaces_plus_separators_len = cell_widths.len() * 2 - 1;
+        let table_width = cell_widths.iter().sum::<usize>() + spaces_plus_separators_len;
+
+        table
+            .iter_mut()
+            .map(|row| {
+                row.0
+                    .iter_mut()
+                    .enumerate()
+                    .map(|(i, cell)| {
+                        let table_is_overflowing = table_width > Self::max_width();
+
+                        if table_is_overflowing && cell.is_shrinkable() {
+                            let shrink_width = table_width - Self::max_width();
+                            let cell_width = cell_widths[i] - shrink_width;
+                            let cell_is_overflowing = cell.unicode_width() > cell_width;
+
+                            if cell_is_overflowing {
+                                let mut value = String::new();
+                                let mut chars_width = 0;
+
+                                for c in cell.value.chars() {
+                                    let char_width = UnicodeWidthStr::width(c.to_string().as_str());
+                                    if chars_width + char_width >= cell_width {
+                                        break;
+                                    }
+
+                                    chars_width += char_width;
+                                    value.push(c);
+                                }
+
+                                value.push_str("… ");
+                                let repeat_count = cell_width - chars_width - 1;
+                                value.push_str(&" ".repeat(repeat_count));
+                                cell.value = value;
+                                cell.to_string()
+                            } else {
+                                let repeat_len = cell_width - cell.unicode_width() + 1;
+                                cell.value.push_str(&" ".repeat(repeat_len));
+                                cell.to_string()
+                            }
+                        } else {
+                            let repeat_count = cell_widths[i] - cell.unicode_width() + 1;
+                            cell.value.push_str(&" ".repeat(repeat_count));
+                            cell.to_string()
+                        }
+                    })
+                    .collect::<Vec<_>>()
+            })
+            .collect::<Vec<_>>()
+    }
+
+    fn render(items: &[Self]) -> String {
+        Self::build(items)
+            .iter()
+            .map(|row| row.join(&Cell::new("|").ext(8).to_string()))
+            .collect::<Vec<_>>()
+            .join("\n")
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    struct Item {
+        id: u16,
+        name: String,
+        desc: String,
+    }
+
+    impl<'a> Item {
+        pub fn new(id: u16, name: &'a str, desc: &'a str) -> Self {
+            Self {
+                id,
+                name: String::from(name),
+                desc: String::from(desc),
+            }
         }
     }
-}
 
-pub trait DisplayRow {
+    impl Table for Item {
-    fn to_row(&self) -> Vec<Cell>;
+        fn head() -> Row {
-}
+            Row::new()
+                .cell(Cell::new("ID"))
+                .cell(Cell::new("NAME").shrinkable())
+                .cell(Cell::new("DESC"))
+        }
 
-pub trait DisplayTable<'a, T: DisplayRow + 'a> {
+        fn row(&self) -> Row {
-    fn header_row() -> Vec<Cell>;
+            Row::new()
-    fn rows(&self) -> &Vec<T>;
+                .cell(Cell::new(self.id.to_string()))
+                .cell(Cell::new(self.name.as_str()).shrinkable())
+                .cell(Cell::new(self.desc.as_str()))
+        }
 
-    fn to_table(&self) -> String {
+        fn max_width() -> usize {
-        let mut col_sizes = vec![];
+            20
-        let head = Self::header_row();
+        }
+    }
 
-        head.iter().for_each(|cell| {
+    #[test]
-            col_sizes.push(cell.unicode_width());
+    fn row_smaller_than_head() {
-        });
+        let items = vec![
+            Item::new(1, "a", "aa"),
+            Item::new(2, "b", "bb"),
+            Item::new(3, "c", "cc"),
+        ];
 
-        let mut table = self
+        let table = vec![
-            .rows()
+            vec!["ID ", "NAME ", "DESC "],
-            .iter()
+            vec!["1  ", "a    ", "aa   "],
-            .map(|item| {
+            vec!["2  ", "b    ", "bb   "],
-                let row = item.to_row();
+            vec!["3  ", "c    ", "cc   "],
-                row.iter()
+        ];
-                    .enumerate()
-                    .for_each(|(i, cell)| col_sizes[i] = col_sizes[i].max(cell.unicode_width()));
-                row
-            })
-            .collect::<Vec<_>>();
 
-        table.insert(0, head);
+        assert_eq!(table, Table::build(&items));
+    }
 
-        let term_width = terminal_size().map(|size| size.0 .0).unwrap_or(0) as usize;
+    #[test]
-        let seps_width = 2 * col_sizes.len() - 1;
+    fn row_bigger_than_head() {
-        let table_width = col_sizes.iter().sum::<usize>() + seps_width;
+        let items = vec![
-        let diff_width = if table_width < term_width {
+            Item::new(1, "a", "aa"),
-            0
+            Item::new(2222, "bbbbb", "bbbbb"),
-        } else {
+            Item::new(3, "c", "cc"),
-            table_width - term_width
+        ];
-        };
 
-        table.iter().fold(String::new(), |output, row| {
+        let table = vec![
-            let row_str = row
+            vec!["ID   ", "NAME  ", "DESC  "],
-                .iter()
+            vec!["1    ", "a     ", "aa    "],
-                .enumerate()
+            vec!["2222 ", "bbbbb ", "bbbbb "],
-                .map(|(i, cell)| {
+            vec!["3    ", "c     ", "cc    "],
-                    if cell.flex && col_sizes[i] > diff_width {
+        ];
-                        cell.render(col_sizes[i] - diff_width)
-                    } else {
-                        cell.render(col_sizes[i])
-                    }
-                })
-                .collect::<Vec<_>>()
-                .join(&Cell::new(&[ext(8)], "|").render(0));
 
-            output + &row_str + "\n"
+        assert_eq!(table, Table::build(&items));
-        })
+
+        let items = vec![
+            Item::new(1, "a", "aa"),
+            Item::new(2222, "bbbbb", "bbbbb"),
+            Item::new(3, "cccccc", "cc"),
+        ];
+
+        let table = vec![
+            vec!["ID   ", "NAME   ", "DESC  "],
+            vec!["1    ", "a      ", "aa    "],
+            vec!["2222 ", "bbbbb  ", "bbbbb "],
+            vec!["3    ", "cccccc ", "cc    "],
+        ];
+
+        assert_eq!(table, Table::build(&items));
+    }
+
+    #[test]
+    fn shrink() {
+        let items = vec![
+            Item::new(1, "short", "desc"),
+            Item::new(2, "loooooong", "desc"),
+            Item::new(3, "shriiiiink", "desc"),
+            Item::new(4, "shriiiiiiiiiink", "desc"),
+            Item::new(5, "😍😍😍😍", "desc"),
+            Item::new(6, "😍😍😍😍😍", "desc"),
+            Item::new(7, "!😍😍😍😍😍", "desc"),
+        ];
+
+        let table = vec![
+            vec!["ID ", "NAME      ", "DESC "],
+            vec!["1  ", "short     ", "desc "],
+            vec!["2  ", "loooooong ", "desc "],
+            vec!["3  ", "shriiiii… ", "desc "],
+            vec!["4  ", "shriiiii… ", "desc "],
+            vec!["5  ", "😍😍😍😍  ", "desc "],
+            vec!["6  ", "😍😍😍😍… ", "desc "],
+            vec!["7  ", "!😍😍😍…  ", "desc "],
+        ];
+
+        assert_eq!(table, Table::build(&items));
     }
 }
-
-#[allow(dead_code)]
-pub const RESET: Style = Style(0, 0, 0);
-
-#[allow(dead_code)]
-pub const BOLD: Style = Style(1, 0, 0);
-
-#[allow(dead_code)]
-pub const UNDERLINE: Style = Style(4, 0, 0);
-
-#[allow(dead_code)]
-pub const REVERSED: Style = Style(7, 0, 0);
-
-#[allow(dead_code)]
-pub const BLACK: Style = Style(30, 0, 0);
-
-#[allow(dead_code)]
-pub const RED: Style = Style(31, 0, 0);
-
-#[allow(dead_code)]
-pub const GREEN: Style = Style(32, 0, 0);
-
-#[allow(dead_code)]
-pub const YELLOW: Style = Style(33, 0, 0);
-
-#[allow(dead_code)]
-pub const BLUE: Style = Style(34, 0, 0);
-
-#[allow(dead_code)]
-pub const MAGENTA: Style = Style(35, 0, 0);
-
-#[allow(dead_code)]
-pub const CYAN: Style = Style(36, 0, 0);
-
-#[allow(dead_code)]
-pub const WHITE: Style = Style(37, 0, 0);
-
-#[allow(dead_code)]
-pub const BRIGHT_BLACK: Style = Style(30, 1, 0);
-
-#[allow(dead_code)]
-pub const BRIGHT_RED: Style = Style(31, 1, 0);
-
-#[allow(dead_code)]
-pub const BRIGHT_GREEN: Style = Style(32, 1, 0);
-
-#[allow(dead_code)]
-pub const BRIGHT_YELLOW: Style = Style(33, 1, 0);
-
-#[allow(dead_code)]
-pub const BRIGHT_BLUE: Style = Style(34, 1, 0);
-
-#[allow(dead_code)]
-pub const BRIGHT_MAGENTA: Style = Style(35, 1, 0);
-
-#[allow(dead_code)]
-pub const BRIGHT_CYAN: Style = Style(36, 1, 0);
-
-#[allow(dead_code)]
-pub const BRIGHT_WHITE: Style = Style(37, 1, 0);
-
-#[allow(dead_code)]
-pub const BG_BLACK: Style = Style(40, 0, 0);
-
-#[allow(dead_code)]
-pub const BG_RED: Style = Style(41, 0, 0);
-
-#[allow(dead_code)]
-pub const BG_GREEN: Style = Style(42, 0, 0);
-
-#[allow(dead_code)]
-pub const BG_YELLOW: Style = Style(43, 0, 0);
-
-#[allow(dead_code)]
-pub const BG_BLUE: Style = Style(44, 0, 0);
-
-#[allow(dead_code)]
-pub const BG_MAGENTA: Style = Style(45, 0, 0);
-
-#[allow(dead_code)]
-pub const BG_CYAN: Style = Style(46, 0, 0);
-
-#[allow(dead_code)]
-pub const BG_WHITE: Style = Style(47, 0, 0);
-
-#[allow(dead_code)]
-pub const BG_BRIGHT_BLACK: Style = Style(40, 1, 0);
-
-#[allow(dead_code)]
-pub const BG_BRIGHT_RED: Style = Style(41, 1, 0);
-
-#[allow(dead_code)]
-pub const BG_BRIGHT_GREEN: Style = Style(42, 1, 0);
-
-#[allow(dead_code)]
-pub const BG_BRIGHT_YELLOW: Style = Style(43, 1, 0);
-
-#[allow(dead_code)]
-pub const BG_BRIGHT_BLUE: Style = Style(44, 1, 0);
-
-#[allow(dead_code)]
-pub const BG_BRIGHT_MAGENTA: Style = Style(45, 1, 0);
-
-#[allow(dead_code)]
-pub const BG_BRIGHT_CYAN: Style = Style(46, 1, 0);
-
-#[allow(dead_code)]
-pub const BG_BRIGHT_WHITE: Style = Style(47, 1, 0);
-
-#[allow(dead_code)]
-fn ext(n: u8) -> Style {
-    Style(38, 5, n)
-}