use lazy_static::lazy_static; use nu_ansi_term::*; use nu_engine::CallExt; use nu_protocol::{ ast::Call, engine::Command, Category, Example, IntoInterruptiblePipelineData, IntoPipelineData, PipelineData, ShellError, Signature, Span, SyntaxShape, Value, }; use std::collections::HashMap; #[derive(Clone)] pub struct AnsiCommand; struct AnsiCode { short_name: Option<&'static str>, long_name: &'static str, code: String, } lazy_static! { static ref CODE_LIST: Vec = vec!{ AnsiCode{ short_name: Some("g"), long_name: "green", code: Color::Green.prefix().to_string()}, AnsiCode{ short_name: Some("gb"), long_name: "green_bold", code: Color::Green.bold().prefix().to_string()}, AnsiCode{ short_name: Some("gu"), long_name: "green_underline", code: Color::Green.underline().prefix().to_string()}, AnsiCode{ short_name: Some("gi"), long_name: "green_italic", code: Color::Green.italic().prefix().to_string()}, AnsiCode{ short_name: Some("gd"), long_name: "green_dimmed", code: Color::Green.dimmed().prefix().to_string()}, AnsiCode{ short_name: Some("gr"), long_name: "green_reverse", code: Color::Green.reverse().prefix().to_string()}, AnsiCode{ short_name: Some("lg"), long_name: "light_green", code: Color::LightGreen.prefix().to_string()}, AnsiCode{ short_name: Some("lgb"), long_name: "light_green_bold", code: Color::LightGreen.bold().prefix().to_string()}, AnsiCode{ short_name: Some("lgu"), long_name: "light_green_underline", code: Color::LightGreen.underline().prefix().to_string()}, AnsiCode{ short_name: Some("lgi"), long_name: "light_green_italic", code: Color::LightGreen.italic().prefix().to_string()}, AnsiCode{ short_name: Some("lgd"), long_name: "light_green_dimmed", code: Color::LightGreen.dimmed().prefix().to_string()}, AnsiCode{ short_name: Some("lgr"), long_name: "light_green_reverse", code: Color::LightGreen.reverse().prefix().to_string()}, AnsiCode{ short_name: Some("r"), long_name: "red", code: Color::Red.prefix().to_string()}, AnsiCode{ short_name: Some("rb"), long_name: "red_bold", code: Color::Red.bold().prefix().to_string()}, AnsiCode{ short_name: Some("ru"), long_name: "red_underline", code: Color::Red.underline().prefix().to_string()}, AnsiCode{ short_name: Some("ri"), long_name: "red_italic", code: Color::Red.italic().prefix().to_string()}, AnsiCode{ short_name: Some("rd"), long_name: "red_dimmed", code: Color::Red.dimmed().prefix().to_string()}, AnsiCode{ short_name: Some("rr"), long_name: "red_reverse", code: Color::Red.reverse().prefix().to_string()}, AnsiCode{ short_name: Some("lr"), long_name: "light_red", code: Color::LightRed.prefix().to_string()}, AnsiCode{ short_name: Some("lrb"), long_name: "light_red_bold", code: Color::LightRed.bold().prefix().to_string()}, AnsiCode{ short_name: Some("lru"), long_name: "light_red_underline", code: Color::LightRed.underline().prefix().to_string()}, AnsiCode{ short_name: Some("lri"), long_name: "light_red_italic", code: Color::LightRed.italic().prefix().to_string()}, AnsiCode{ short_name: Some("lrd"), long_name: "light_red_dimmed", code: Color::LightRed.dimmed().prefix().to_string()}, AnsiCode{ short_name: Some("lrr"), long_name: "light_red_reverse", code: Color::LightRed.reverse().prefix().to_string()}, AnsiCode{ short_name: Some("u"), long_name: "blue", code: Color::Blue.prefix().to_string()}, AnsiCode{ short_name: Some("ub"), long_name: "blue_bold", code: Color::Blue.bold().prefix().to_string()}, AnsiCode{ short_name: Some("uu"), long_name: "blue_underline", code: Color::Blue.underline().prefix().to_string()}, AnsiCode{ short_name: Some("ui"), long_name: "blue_italic", code: Color::Blue.italic().prefix().to_string()}, AnsiCode{ short_name: Some("ud"), long_name: "blue_dimmed", code: Color::Blue.dimmed().prefix().to_string()}, AnsiCode{ short_name: Some("ur"), long_name: "blue_reverse", code: Color::Blue.reverse().prefix().to_string()}, AnsiCode{ short_name: Some("lu"), long_name: "light_blue", code: Color::LightBlue.prefix().to_string()}, AnsiCode{ short_name: Some("lub"), long_name: "light_blue_bold", code: Color::LightBlue.bold().prefix().to_string()}, AnsiCode{ short_name: Some("luu"), long_name: "light_blue_underline", code: Color::LightBlue.underline().prefix().to_string()}, AnsiCode{ short_name: Some("lui"), long_name: "light_blue_italic", code: Color::LightBlue.italic().prefix().to_string()}, AnsiCode{ short_name: Some("lud"), long_name: "light_blue_dimmed", code: Color::LightBlue.dimmed().prefix().to_string()}, AnsiCode{ short_name: Some("lur"), long_name: "light_blue_reverse", code: Color::LightBlue.reverse().prefix().to_string()}, AnsiCode{ short_name: Some("b"), long_name: "black", code: Color::Black.prefix().to_string()}, AnsiCode{ short_name: Some("bb"), long_name: "black_bold", code: Color::Black.bold().prefix().to_string()}, AnsiCode{ short_name: Some("bu"), long_name: "black_underline", code: Color::Black.underline().prefix().to_string()}, AnsiCode{ short_name: Some("bi"), long_name: "black_italic", code: Color::Black.italic().prefix().to_string()}, AnsiCode{ short_name: Some("bd"), long_name: "black_dimmed", code: Color::Black.dimmed().prefix().to_string()}, AnsiCode{ short_name: Some("br"), long_name: "black_reverse", code: Color::Black.reverse().prefix().to_string()}, AnsiCode{ short_name: Some("ligr"), long_name: "light_gray", code: Color::LightGray.prefix().to_string()}, AnsiCode{ short_name: Some("ligrb"), long_name: "light_gray_bold", code: Color::LightGray.bold().prefix().to_string()}, AnsiCode{ short_name: Some("ligru"), long_name: "light_gray_underline", code: Color::LightGray.underline().prefix().to_string()}, AnsiCode{ short_name: Some("ligri"), long_name: "light_gray_italic", code: Color::LightGray.italic().prefix().to_string()}, AnsiCode{ short_name: Some("ligrd"), long_name: "light_gray_dimmed", code: Color::LightGray.dimmed().prefix().to_string()}, AnsiCode{ short_name: Some("ligrr"), long_name: "light_gray_reverse", code: Color::LightGray.reverse().prefix().to_string()}, AnsiCode{ short_name: Some("y"), long_name: "yellow", code: Color::Yellow.prefix().to_string()}, AnsiCode{ short_name: Some("yb"), long_name: "yellow_bold", code: Color::Yellow.bold().prefix().to_string()}, AnsiCode{ short_name: Some("yu"), long_name: "yellow_underline", code: Color::Yellow.underline().prefix().to_string()}, AnsiCode{ short_name: Some("yi"), long_name: "yellow_italic", code: Color::Yellow.italic().prefix().to_string()}, AnsiCode{ short_name: Some("yd"), long_name: "yellow_dimmed", code: Color::Yellow.dimmed().prefix().to_string()}, AnsiCode{ short_name: Some("yr"), long_name: "yellow_reverse", code: Color::Yellow.reverse().prefix().to_string()}, AnsiCode{ short_name: Some("ly"), long_name: "light_yellow", code: Color::LightYellow.prefix().to_string()}, AnsiCode{ short_name: Some("lyb"), long_name: "light_yellow_bold", code: Color::LightYellow.bold().prefix().to_string()}, AnsiCode{ short_name: Some("lyu"), long_name: "light_yellow_underline", code: Color::LightYellow.underline().prefix().to_string()}, AnsiCode{ short_name: Some("lyi"), long_name: "light_yellow_italic", code: Color::LightYellow.italic().prefix().to_string()}, AnsiCode{ short_name: Some("lyd"), long_name: "light_yellow_dimmed", code: Color::LightYellow.dimmed().prefix().to_string()}, AnsiCode{ short_name: Some("lyr"), long_name: "light_yellow_reverse", code: Color::LightYellow.reverse().prefix().to_string()}, AnsiCode{ short_name: Some("p"), long_name: "purple", code: Color::Purple.prefix().to_string()}, AnsiCode{ short_name: Some("pb"), long_name: "purple_bold", code: Color::Purple.bold().prefix().to_string()}, AnsiCode{ short_name: Some("pu"), long_name: "purple_underline", code: Color::Purple.underline().prefix().to_string()}, AnsiCode{ short_name: Some("pi"), long_name: "purple_italic", code: Color::Purple.italic().prefix().to_string()}, AnsiCode{ short_name: Some("pd"), long_name: "purple_dimmed", code: Color::Purple.dimmed().prefix().to_string()}, AnsiCode{ short_name: Some("pr"), long_name: "purple_reverse", code: Color::Purple.reverse().prefix().to_string()}, AnsiCode{ short_name: Some("lp"), long_name: "light_purple", code: Color::LightPurple.prefix().to_string()}, AnsiCode{ short_name: Some("lpb"), long_name: "light_purple_bold", code: Color::LightPurple.bold().prefix().to_string()}, AnsiCode{ short_name: Some("lpu"), long_name: "light_purple_underline", code: Color::LightPurple.underline().prefix().to_string()}, AnsiCode{ short_name: Some("lpi"), long_name: "light_purple_italic", code: Color::LightPurple.italic().prefix().to_string()}, AnsiCode{ short_name: Some("lpd"), long_name: "light_purple_dimmed", code: Color::LightPurple.dimmed().prefix().to_string()}, AnsiCode{ short_name: Some("lpr"), long_name: "light_purple_reverse", code: Color::LightPurple.reverse().prefix().to_string()}, AnsiCode{ short_name: Some("c"), long_name: "cyan", code: Color::Cyan.prefix().to_string()}, AnsiCode{ short_name: Some("cb"), long_name: "cyan_bold", code: Color::Cyan.bold().prefix().to_string()}, AnsiCode{ short_name: Some("cu"), long_name: "cyan_underline", code: Color::Cyan.underline().prefix().to_string()}, AnsiCode{ short_name: Some("ci"), long_name: "cyan_italic", code: Color::Cyan.italic().prefix().to_string()}, AnsiCode{ short_name: Some("cd"), long_name: "cyan_dimmed", code: Color::Cyan.dimmed().prefix().to_string()}, AnsiCode{ short_name: Some("cr"), long_name: "cyan_reverse", code: Color::Cyan.reverse().prefix().to_string()}, AnsiCode{ short_name: Some("lc"), long_name: "light_cyan", code: Color::LightCyan.prefix().to_string()}, AnsiCode{ short_name: Some("lcb"), long_name: "light_cyan_bold", code: Color::LightCyan.bold().prefix().to_string()}, AnsiCode{ short_name: Some("lcu"), long_name: "light_cyan_underline", code: Color::LightCyan.underline().prefix().to_string()}, AnsiCode{ short_name: Some("lci"), long_name: "light_cyan_italic", code: Color::LightCyan.italic().prefix().to_string()}, AnsiCode{ short_name: Some("lcd"), long_name: "light_cyan_dimmed", code: Color::LightCyan.dimmed().prefix().to_string()}, AnsiCode{ short_name: Some("lcr"), long_name: "light_cyan_reverse", code: Color::LightCyan.reverse().prefix().to_string()}, AnsiCode{ short_name: Some("w"), long_name: "white", code: Color::White.prefix().to_string()}, AnsiCode{ short_name: Some("wb"), long_name: "white_bold", code: Color::White.bold().prefix().to_string()}, AnsiCode{ short_name: Some("wu"), long_name: "white_underline", code: Color::White.underline().prefix().to_string()}, AnsiCode{ short_name: Some("wi"), long_name: "white_italic", code: Color::White.italic().prefix().to_string()}, AnsiCode{ short_name: Some("wd"), long_name: "white_dimmed", code: Color::White.dimmed().prefix().to_string()}, AnsiCode{ short_name: Some("wr"), long_name: "white_reverse", code: Color::White.reverse().prefix().to_string()}, AnsiCode{ short_name: Some("dgr"), long_name: "dark_gray", code: Color::DarkGray.prefix().to_string()}, AnsiCode{ short_name: Some("dgrb"), long_name: "dark_gray_bold", code: Color::DarkGray.bold().prefix().to_string()}, AnsiCode{ short_name: Some("dgru"), long_name: "dark_gray_underline", code: Color::DarkGray.underline().prefix().to_string()}, AnsiCode{ short_name: Some("dgri"), long_name: "dark_gray_italic", code: Color::DarkGray.italic().prefix().to_string()}, AnsiCode{ short_name: Some("dgrd"), long_name: "dark_gray_dimmed", code: Color::DarkGray.dimmed().prefix().to_string()}, AnsiCode{ short_name: Some("dgrr"), long_name: "dark_gray_reverse", code: Color::DarkGray.reverse().prefix().to_string()}, AnsiCode{ short_name: Some("def"), long_name: "default", code: Color::Default.prefix().to_string()}, AnsiCode{ short_name: Some("defb"), long_name: "default_bold", code: Color::Default.bold().prefix().to_string()}, AnsiCode{ short_name: Some("defu"), long_name: "default_underline", code: Color::Default.underline().prefix().to_string()}, AnsiCode{ short_name: Some("defi"), long_name: "default_italic", code: Color::Default.italic().prefix().to_string()}, AnsiCode{ short_name: Some("defd"), long_name: "default_dimmed", code: Color::Default.dimmed().prefix().to_string()}, AnsiCode{ short_name: Some("defr"), long_name: "default_reverse", code: Color::Default.reverse().prefix().to_string()}, AnsiCode{ short_name: None, long_name: "reset", code: "\x1b[0m".to_owned()}, // Reference for ansi codes https://gist.github.com/fnky/458719343aabd01cfb17a3a4f7296797 // Another good reference http://ascii-table.com/ansi-escape-sequences.php // For setting title like `echo [(char title) (pwd) (char bel)] | str join` AnsiCode{short_name: None, long_name:"title", code: "\x1b]2;".to_string()}, // ESC]2; xterm sets window title using OSC syntax escapes // Ansi Erase Sequences AnsiCode{ short_name: None, long_name:"clear_screen", code: "\x1b[J".to_string()}, // clears the screen AnsiCode{ short_name: None, long_name:"clear_screen_from_cursor_to_end", code: "\x1b[0J".to_string()}, // clears from cursor until end of screen AnsiCode{ short_name: None, long_name:"clear_screen_from_cursor_to_beginning", code: "\x1b[1J".to_string()}, // clears from cursor to beginning of screen AnsiCode{ short_name: Some("cls"), long_name:"clear_entire_screen", code: "\x1b[2J".to_string()}, // clears the entire screen AnsiCode{ short_name: Some("clsb"), long_name:"clear_entire_screen_plus_buffer", code: "\x1b[3J".to_string()}, // clear entire screen and delete all lines saved in the scrollback buffer AnsiCode{ short_name: None, long_name:"erase_line", code: "\x1b[K".to_string()}, // clears the current line AnsiCode{ short_name: None, long_name:"erase_line_from_cursor_to_end", code: "\x1b[0K".to_string()}, // clears from cursor to end of line AnsiCode{ short_name: None, long_name:"erase_line_from_cursor_to_beginning", code: "\x1b[1K".to_string()}, // clears from cursor to start of line AnsiCode{ short_name: None, long_name:"erase_entire_line", code: "\x1b[2K".to_string()}, // clears entire line // Turn on/off cursor AnsiCode{ short_name: None, long_name:"cursor_off", code: "\x1b[?25l".to_string()}, AnsiCode{ short_name: None, long_name:"cursor_on", code: "\x1b[?25h".to_string()}, AnsiCode{ short_name: Some("home"), long_name:"cursor_home", code: "\x1b[H".to_string()}, // Turn on/off blinking AnsiCode{ short_name: None, long_name:"cursor_blink_off", code: "\x1b[?12l".to_string()}, AnsiCode{ short_name: None, long_name:"cursor_blink_on", code: "\x1b[?12h".to_string()}, // Cursor position in ESC [ ;R where r = row and c = column AnsiCode{ short_name: None, long_name:"cursor_position", code: "\x1b[6n".to_string()}, // Report Terminal Identity AnsiCode{ short_name: None, long_name:"identity", code: "\x1b[0c".to_string()}, // Ansi escape only - CSI command AnsiCode{ short_name: Some("esc"), long_name: "escape", code: "\x1b".to_string()}, // Ansi escape only - CSI command AnsiCode{ short_name: Some("csi"), long_name: "escape_left", code: "\x1b[".to_string()}, // OSC escape (Operating system command) AnsiCode{ short_name: Some("osc"), long_name:"escape_right", code: "\x1b]".to_string()}, // OSC string terminator AnsiCode{ short_name: Some("st"), long_name:"string_terminator", code: "\x1b\\".to_string()}, // Ansi Rgb - Needs to be 32;2;r;g;b or 48;2;r;g;b // assuming the rgb will be passed via command and no here AnsiCode{ short_name: None, long_name:"rgb_fg", code: "\x1b[38;2;".to_string()}, AnsiCode{ short_name: None, long_name:"rgb_bg", code: "\x1b[48;2;".to_string()}, // Ansi color index - Needs 38;5;idx or 48;5;idx where idx = 0 to 255 AnsiCode{ short_name: Some("idx_fg"), long_name: "color_idx_fg", code: "\x1b[38;5;".to_string()}, AnsiCode{ short_name: Some("idx_bg"), long_name:"color_idx_bg", code: "\x1b[48;5;".to_string()}, // Returns terminal size like "[;R" where r is rows and c is columns // This should work assuming your terminal is not greater than 999x999 AnsiCode{ short_name: None, long_name:"size", code: "\x1b[s\x1b[999;999H\x1b[6n\x1b[u".to_string()},}; static ref CODE_MAP: HashMap<&'static str, &'static str > = build_ansi_hashmap(&CODE_LIST); } impl Command for AnsiCommand { fn name(&self) -> &str { "ansi" } fn signature(&self) -> Signature { Signature::build("ansi") .optional( "code", SyntaxShape::Any, "the name of the code to use like 'green' or 'reset' to reset the color", ) .switch( "escape", // \x1b[ "escape sequence without the escape character(s)", Some('e'), ) .switch( "osc", // \x1b] "operating system command (ocs) escape sequence without the escape character(s)", Some('o'), ) .switch("list", "list available ansi code names", Some('l')) .category(Category::Platform) } fn usage(&self) -> &str { "Output ANSI codes to change color." } fn extra_usage(&self) -> &str { r#"For escape sequences: Escape: '\x1b[' is not required for --escape parameter Format: #(;#)m Example: 1;31m for bold red or 2;37;41m for dimmed white fg with red bg There can be multiple text formatting sequence numbers separated by a ; and ending with an m where the # is of the following values: attribute_number, abbreviation, description 0 reset / normal display 1 b bold or increased intensity 2 d faint or decreased intensity 3 i italic on (non-mono font) 4 u underline on 5 l slow blink on 6 fast blink on 7 r reverse video on 8 h nondisplayed (invisible) on 9 s strike-through on foreground/bright colors background/bright colors 30/90 black 40/100 black 31/91 red 41/101 red 32/92 green 42/102 green 33/93 yellow 43/103 yellow 34/94 blue 44/104 blue 35/95 magenta 45/105 magenta 36/96 cyan 46/106 cyan 37/97 white 47/107 white 39 default 49 default https://en.wikipedia.org/wiki/ANSI_escape_code OSC: '\x1b]' is not required for --osc parameter Example: echo [(ansi -o '0') 'some title' (char bel)] | str join Format: # 0 Set window title and icon name 1 Set icon name 2 Set window title 4 Set/read color palette 9 iTerm2 Grown notifications 10 Set foreground color (x11 color spec) 11 Set background color (x11 color spec) ... others"# } fn examples(&self) -> Vec { vec![ Example { description: "Change color to green", example: r#"ansi green"#, result: Some(Value::test_string("\u{1b}[32m")), }, Example { description: "Reset the color", example: r#"ansi reset"#, result: Some(Value::test_string("\u{1b}[0m")), }, Example { description: "Use ansi to color text (rb = red bold, gb = green bold, pb = purple bold)", example: r#"echo [(ansi rb) Hello " " (ansi gb) Nu " " (ansi pb) World (ansi reset)] | str join"#, result: Some(Value::test_string( "\u{1b}[1;31mHello \u{1b}[1;32mNu \u{1b}[1;35mWorld\u{1b}[0m", )), }, Example { description: "Use ansi to color text (italic bright yellow on red 'Hello' with green bold 'Nu' and purple bold 'World')", example: r#"echo [(ansi -e '3;93;41m') Hello (ansi reset) " " (ansi gb) Nu " " (ansi pb) World (ansi reset)] | str join"#, result: Some(Value::test_string( "\u{1b}[3;93;41mHello\u{1b}[0m \u{1b}[1;32mNu \u{1b}[1;35mWorld\u{1b}[0m", )), }, Example { description: "Use ansi to color text with a style (blue on red in bold)", example: r#"$"(ansi -e { fg: '#0000ff' bg: '#ff0000' attr: b })Hello Nu World(ansi reset)""#, result: Some(Value::test_string( "\u{1b}[1;48;2;255;0;0;38;2;0;0;255mHello Nu World\u{1b}[0m", )), }, ] } fn run( &self, engine_state: &nu_protocol::engine::EngineState, stack: &mut nu_protocol::engine::Stack, call: &Call, _input: PipelineData, ) -> Result { let list: bool = call.has_flag("list"); let escape: bool = call.has_flag("escape"); let osc: bool = call.has_flag("osc"); let use_ansi_coloring = engine_state.get_config().use_ansi_coloring; if list { return generate_ansi_code_list(engine_state, call.head, use_ansi_coloring); } // The code can now be one of the ansi abbreviations like green_bold // or it can be a record like this: { fg: "#ff0000" bg: "#00ff00" attr: bli } // this record is defined in nu-color-config crate let code: Value = match call.opt(engine_state, stack, 0)? { Some(c) => c, None => return Err(ShellError::MissingParameter("code".into(), call.head)), }; let param_is_string = matches!(code, Value::String { val: _, span: _ }); if escape && osc { return Err(ShellError::IncompatibleParameters { left_message: "escape".into(), left_span: call .get_named_arg("escape") .expect("Unexpected missing argument") .span, right_message: "osc".into(), right_span: call .get_named_arg("osc") .expect("Unexpected missing argument") .span, }); } let code_string = if param_is_string { code.as_string().expect("error getting code as string") } else { "".to_string() }; let param_is_valid_string = param_is_string && !code_string.is_empty(); if (escape || osc) && (param_is_valid_string) { let code_vec: Vec = code_string.chars().collect(); if code_vec[0] == '\\' { return Err(ShellError::UnsupportedInput( String::from("no need for escape characters"), call.get_flag_expr("escape") .expect("Unexpected missing argument") .span, )); } } let output = if escape && param_is_valid_string { format!("\x1b[{}", code_string) } else if osc && param_is_valid_string { // Operating system command aka osc ESC ] <- note the right brace, not left brace for osc // OCS's need to end with a bell '\x07' char format!("\x1b]{};", code_string) } else if param_is_valid_string { // parse hex colors like #00FF00 if code_string.starts_with('#') { match nu_color_config::color_from_hex(&code_string) { Ok(color) => match color { Some(c) => c.prefix().to_string(), None => Color::White.prefix().to_string(), }, Err(err) => { return Err(ShellError::GenericError( "error parsing hex color".to_string(), format!("{}", err), Some(code.span()?), None, Vec::new(), )); } } } else { match str_to_ansi(&code_string) { Some(c) => c, None => { return Err(ShellError::UnsupportedInput( String::from("Unknown ansi code"), call.positional_nth(0) .expect("Unexpected missing argument") .span, )) } } } } else { // This is a record that should look like // { fg: "#ff0000" bg: "#00ff00" attr: bli } let record = code.as_record()?; // create a NuStyle to parse the information into let mut nu_style = nu_color_config::NuStyle { fg: None, bg: None, attr: None, }; // Iterate and populate NuStyle with real values for (k, v) in record.0.iter().zip(record.1) { match k.as_str() { "fg" => nu_style.fg = Some(v.as_string()?), "bg" => nu_style.bg = Some(v.as_string()?), "attr" => nu_style.attr = Some(v.as_string()?), _ => { return Err(ShellError::IncompatibleParametersSingle( format!("problem with key: {}", k), code.span().expect("error with span"), )) } } } // Now create a nu_ansi_term::Style from the NuStyle let style = nu_color_config::parse_nustyle(nu_style); // Return the prefix string. The prefix is the Ansi String. The suffix would be 0m, reset/stop coloring. style.prefix().to_string() }; Ok(Value::string(output, call.head).into_pipeline_data()) } } pub fn str_to_ansi(s: &str) -> Option { CODE_MAP.get(s).map(|x| String::from(*x)) } fn generate_ansi_code_list( engine_state: &nu_protocol::engine::EngineState, call_span: Span, use_ansi_coloring: bool, ) -> Result { return Ok(CODE_LIST .iter() .enumerate() .map(move |(i, ansi_code)| { let cols = if use_ansi_coloring { vec![ "name".into(), "preview".into(), "short name".into(), "code".into(), ] } else { vec!["name".into(), "short name".into(), "code".into()] }; let name: Value = Value::string(String::from(ansi_code.long_name), call_span); let short_name = Value::string(ansi_code.short_name.unwrap_or(""), call_span); // The first 102 items in the ansi array are colors let preview = if i < 102 { Value::string(format!("{}NUSHELL\u{1b}[0m", &ansi_code.code), call_span) } else { Value::string("\u{1b}[0m", call_span) }; let code_string = String::from(&ansi_code.code.replace('\u{1b}', "")); let code = Value::string(code_string, call_span); let vals = if use_ansi_coloring { vec![name, preview, short_name, code] } else { vec![name, short_name, code] }; Value::Record { cols, vals, span: call_span, } }) .into_pipeline_data(engine_state.ctrlc.clone())); } fn build_ansi_hashmap(v: &'static [AnsiCode]) -> HashMap<&'static str, &'static str> { let mut result = HashMap::new(); for code in v.iter() { let value: &'static str = &code.code; if let Some(sn) = code.short_name { result.insert(sn, value); } result.insert(code.long_name, value); } result } #[cfg(test)] mod tests { use crate::platform::ansi::ansi_::AnsiCommand; #[test] fn examples_work_as_expected() { use crate::test_examples; test_examples(AnsiCommand {}) } }