nushell/crates/nu-table/examples/table_demo.rs

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use nu_ansi_term::{Color, Style};
color_config now accepts closures as color values (#7141) # Description Closes #6909. You can now add closures to your `color_config` themes. Whenever a value would be printed with `table`, the closure is run with the value piped-in. The closure must return either a {fg,bg,attr} record or a color name (`'light_red'` etc.). This returned style is used to colour the value. This is entirely backwards-compatible with existing config.nu files. Example code excerpt: ``` let my_theme = { header: green_bold bool: { if $in { 'light_cyan' } else { 'light_red' } } int: purple_bold filesize: { |e| if $e == 0b { 'gray' } else if $e < 1mb { 'purple_bold' } else { 'cyan_bold' } } duration: purple_bold date: { (date now) - $in | if $in > 1wk { 'cyan_bold' } else if $in > 1day { 'green_bold' } else { 'yellow_bold' } } range: yellow_bold string: { if $in =~ '^#\w{6}$' { $in } else { 'white' } } nothing: white ``` Example output with this in effect: ![2022-11-16 12 47 23 AM - style_computer rs_-_nushell_-_VSCodium](https://user-images.githubusercontent.com/83939/201952558-482de05d-69c7-4bf2-91fc-d0964bf71264.png) ![2022-11-16 12 39 41 AM - style_computer rs_-_nushell_-_VSCodium](https://user-images.githubusercontent.com/83939/201952580-2384bb86-b680-40fe-8192-71bae396c738.png) ![2022-11-15 09 21 54 PM - run_external rs_-_nushell_-_VSCodium](https://user-images.githubusercontent.com/83939/201952601-343fc15d-e4a8-4a92-ad89-9a7d17d42748.png) Slightly important notes: * Some color_config names, namely "separator", "empty" and "hints", pipe in `null` instead of a value. * Currently, doing anything non-trivial inside a closure has an understandably big perf hit. I currently do not actually recommend something like `string: { if $in =~ '^#\w{6}$' { $in } else { 'white' } }` for serious work, mainly because of the abundance of string-type data in the world. Nevertheless, lesser-used types like "date" and "duration" work well with this. * I had to do some reorganisation in order to make it possible to call `eval_block()` that late in table rendering. I invented a new struct called "StyleComputer" which holds the engine_state and stack of the initial `table` command (implicit or explicit). * StyleComputer has a `compute()` method which takes a color_config name and a nu value, and always returns the correct Style, so you don't have to worry about A) the color_config value was set at all, B) whether it was set to a closure or not, or C) which default style to use in those cases. * Currently, errors encountered during execution of the closures are thrown in the garbage. Any other ideas are welcome. (Nonetheless, errors result in a huge perf hit when they are encountered. I think what should be done is to assume something terrible happened to the user's config and invalidate the StyleComputer for that `table` run, thus causing subsequent output to just be Style::default().) * More thorough tests are forthcoming - ran into some difficulty using `nu!` to take an alternative config, and for some reason `let-env config =` statements don't seem to work inside `nu!` pipelines(???) * The default config.nu has not been updated to make use of this yet. Do tell if you think I should incorporate that into this. # User-Facing Changes See above. # Tests + Formatting Don't forget to add tests that cover your changes. Make sure you've run and fixed any issues with these commands: - `cargo fmt --all -- --check` to check standard code formatting (`cargo fmt --all` applies these changes) - `cargo clippy --workspace --features=extra -- -D warnings -D clippy::unwrap_used -A clippy::needless_collect` to check that you're using the standard code style - `cargo test --workspace --features=extra` to check that all tests pass # After Submitting If your PR had any user-facing changes, update [the documentation](https://github.com/nushell/nushell.github.io) after the PR is merged, if necessary. This will help us keep the docs up to date.
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use nu_color_config::TextStyle;
use nu_table::{NuTable, TableConfig, TableTheme};
use tabled::grid::records::vec_records::CellInfo;
fn main() {
let args: Vec<_> = std::env::args().collect();
let mut width = 0;
if args.len() > 1 {
width = args[1].parse::<usize>().expect("Need a width in columns");
}
if width < 4 {
println!("Width must be greater than or equal to 4, setting width to 80");
width = 80;
}
let (table_headers, row_data) = make_table_data();
let headers = to_cell_info_vec(&table_headers);
let rows = to_cell_info_vec(&row_data);
WIP/ Checkout to new `tabled` (#6286) * nu-table/ Use latest tabled Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * nu-table/ Fix first column alignment Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * nu-table: Fix cargo clippy Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * nu-table: Fix color issue Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * nu-table: Fix footer row Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * nu-table: Bump tabled Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * nu-table: Bump tabled Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * nu-table: Bump tabled Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * Update Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * nu-table/ Update * Use latest tabled Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * Add optional -e, -c argument to `table` command for different view Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * Fix clippy Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * Fix clippy Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * Update Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * Fix cargo clippy Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * Fix tests Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * nu-table: Add footer into -e/c mode Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * Publish new expand mode Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * Add width ctrl for Expand mode Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * Refactorings Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * Refactorings Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * Add tests Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * Add tests Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * Merge with main Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * Fix clippy Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * Fix tests Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * Fix tests Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * Bump tabled Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * Add record expand and fix empty list issue Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com> * refactoring Signed-off-by: Maxim Zhiburt <zhiburt@gmail.com>
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let mut rows = vec![rows; 3];
rows.insert(0, headers);
let mut table = NuTable::from(rows);
table.set_data_style(TextStyle::basic_left());
table.set_header_style(TextStyle::basic_center().style(Style::new().on(Color::Blue)));
let theme = TableTheme::rounded();
let table_cfg = TableConfig::new().theme(theme).with_header(true);
let output_table = table
.draw(table_cfg, width)
.unwrap_or_else(|| format!("Couldn't fit table into {width} columns!"));
println!("{output_table}")
}
fn make_table_data() -> (Vec<&'static str>, Vec<&'static str>) {
let table_headers = vec![
"category",
"description",
"emoji",
"ios_version",
"unicode_version",
"aliases",
"tags",
"category2",
"description2",
"emoji2",
"ios_version2",
"unicode_version2",
"aliases2",
"tags2",
];
let row_data = vec![
"Smileys & Emotion",
"grinning face",
"😀",
"6",
"6.1",
"grinning",
"smile",
"Smileys & Emotion",
"grinning face",
"😀",
"6",
"6.1",
"grinning",
"smile",
];
(table_headers, row_data)
}
fn to_cell_info_vec(data: &[&str]) -> Vec<CellInfo<String>> {
let mut v = vec![];
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for x in data {
v.push(CellInfo::new(String::from(*x)));
}
v
}