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add a display of what the colors look like in ansi --list (#4866)

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* add a display of what the colors look like in `ansi --list`

* change 'color' to 'preview' - add the ability to turn it off via config with use_ansi_coloring
This commit is contained in:
Darren Schroeder 2022-03-18 06:27:33 -05:00 committed by GitHub
parent 7773c4cd4d
commit 4f05e9f4a6
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1 changed files with 26 additions and 4 deletions
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30
crates/nu-command/src/platform/ansi/ansi_.rs
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@ -309,9 +309,10 @@ Format: #
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 = stack.get_config()?.use_ansi_coloring;
if list {
return generate_ansi_code_list(engine_state, call.head);
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
@ -416,16 +417,37 @@ pub fn str_to_ansi(s: &str) -> Option<String> {
fn generate_ansi_code_list(
engine_state: &nu_protocol::engine::EngineState,
call_span: Span,
use_ansi_coloring: bool,
) -> Result<nu_protocol::PipelineData, ShellError> {
return Ok(CODE_LIST
.iter()
.map(move |ansi_code| {
let cols = vec!["name".into(), "short name".into(), "code".into()];
.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 96 items in the ansi array are colors
let preview = if i < 96 {
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 = vec![name, short_name, code];
let vals = if use_ansi_coloring {
vec![name, preview, short_name, code]
} else {
vec![name, short_name, code]
};
Value::Record {
cols,
vals,