nushell/crates/nu-command/src
Darren Schroeder 761946c522
add the ability to combine columns with detect columns (#9511)
# Description

This PR adds the ability to manually combine columns in the `detect
columns` command. This is useful when items are close together but want
them to be in one column.

For example, if you want to parse the output of bash's `ls` command, the
output passed into `detect columns` would look similar to this.
```
❯ ^ls -lh
total 242K
-rw-r--r-- 1 dschroeder 197121 3.5K Mar 30 10:10 CODE_OF_CONDUCT.md
-rw-r--r-- 1 dschroeder 197121  11K Jun 21 14:16 CONTRIBUTING.md
-rw-r--r-- 1 dschroeder 197121 153K Jun 21 14:16 Cargo.lock
-rw-r--r-- 1 dschroeder 197121 5.7K Jun 21 08:47 Cargo.toml
-rw-r--r-- 1 dschroeder 197121  371 Mar 30 10:10 Cross.toml
-rw-r--r-- 1 dschroeder 197121 1.1K Apr  3 08:37 LICENSE
-rw-r--r-- 1 dschroeder 197121  13K Jun 21 14:16 README.md
drwxr-xr-x 1 dschroeder 197121    0 May 24 08:06 assets
drwxr-xr-x 1 dschroeder 197121    0 Jun 21 14:16 benches
-rw-r--r-- 1 dschroeder 197121  310 Mar 30 10:10 codecov.yml
drwxr-xr-x 1 dschroeder 197121    0 Jun  1 15:30 crates
drwxr-xr-x 1 dschroeder 197121    0 May  4 07:55 dict
drwxr-xr-x 1 dschroeder 197121    0 Mar 30 10:10 docker
-rw-r--r-- 1 dschroeder 197121 1.1K Jun 12 07:03 rust-toolchain.toml
drwxr-xr-x 1 dschroeder 197121    0 May 26 07:11 scripts
drwxr-xr-x 1 dschroeder 197121    0 Jun 15 07:14 src
drwxr-xr-x 1 dschroeder 197121    0 Jun 21 09:48 target
drwxr-xr-x 1 dschroeder 197121    0 Jun 21 12:30 tests
-rw-r--r-- 1 dschroeder 197121  16K Jun 21 14:16 toolkit.nu
drwxr-xr-x 1 dschroeder 197121    0 Jun  1 15:30 wix
```
Running it through `detect columns` is helpful but notice how the Month,
Day, and Time are in their own columns.
```
❯ ^ls -lh | detect columns --no-headers --skip 1
╭────┬────────────┬─────────┬────────────┬─────────┬─────────┬─────────┬─────────┬─────────┬─────────────────────╮
│  # │  column0   │ column1 │  column2   │ column3 │ column4 │ column5 │ column6 │ column7 │       column8       │
├────┼────────────┼─────────┼────────────┼─────────┼─────────┼─────────┼─────────┼─────────┼─────────────────────┤
│  0 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 3.5K    │ Mar     │ 30      │ 10:10   │ CODE_OF_CONDUCT.md  │
│  1 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 11K     │ Jun     │ 21      │ 14:16   │ CONTRIBUTING.md     │
│  2 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 153K    │ Jun     │ 21      │ 14:16   │ Cargo.lock          │
│  3 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 5.7K    │ Jun     │ 21      │ 08:47   │ Cargo.toml          │
│  4 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 371     │ Mar     │ 30      │ 10:10   │ Cross.toml          │
│  5 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 1.1K    │ Apr     │ 3       │ 08:37   │ LICENSE             │
│  6 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 13K     │ Jun     │ 21      │ 14:16   │ README.md           │
│  7 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ May     │ 24      │ 08:06   │ assets              │
│  8 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ Jun     │ 21      │ 14:16   │ benches             │
│  9 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 310     │ Mar     │ 30      │ 10:10   │ codecov.yml         │
│ 10 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ Jun     │ 1       │ 15:30   │ crates              │
│ 11 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ May     │ 4       │ 07:55   │ dict                │
│ 12 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ Mar     │ 30      │ 10:10   │ docker              │
│ 13 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 1.1K    │ Jun     │ 12      │ 07:03   │ rust-toolchain.toml │
│ 14 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ May     │ 26      │ 07:11   │ scripts             │
│ 15 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ Jun     │ 15      │ 07:14   │ src                 │
│ 16 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ Jun     │ 21      │ 09:48   │ target              │
│ 17 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ Jun     │ 21      │ 12:30   │ tests               │
│ 18 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 16K     │ Jun     │ 21      │ 14:16   │ toolkit.nu          │
│ 19 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ Jun     │ 1       │ 15:30   │ wix                 │
├────┼────────────┼─────────┼────────────┼─────────┼─────────┼─────────┼─────────┼─────────┼─────────────────────┤
│  # │  column0   │ column1 │  column2   │ column3 │ column4 │ column5 │ column6 │ column7 │       column8       │
╰────┴────────────┴─────────┴────────────┴─────────┴─────────┴─────────┴─────────┴─────────┴─────────────────────╯
```
Now you can add `--combine-columns <range>` and get something like this.
```
❯ ^ls -lh | detect columns --no-headers --skip 1 --combine-columns 5..7
╭────┬────────────┬─────────┬────────────┬─────────┬─────────┬──────────────┬─────────────────────╮
│  # │  column0   │ column1 │  column2   │ column3 │ column4 │   column5    │       column6       │
├────┼────────────┼─────────┼────────────┼─────────┼─────────┼──────────────┼─────────────────────┤
│  0 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 3.5K    │ Mar 30 10:10 │ CODE_OF_CONDUCT.md  │
│  1 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 11K     │ Jun 21 14:16 │ CONTRIBUTING.md     │
│  2 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 153K    │ Jun 21 14:16 │ Cargo.lock          │
│  3 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 5.7K    │ Jun 21 08:47 │ Cargo.toml          │
│  4 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 371     │ Mar 30 10:10 │ Cross.toml          │
│  5 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 1.1K    │ Apr 3 08:37  │ LICENSE             │
│  6 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 13K     │ Jun 21 14:16 │ README.md           │
│  7 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ May 24 08:06 │ assets              │
│  8 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ Jun 21 14:16 │ benches             │
│  9 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 310     │ Mar 30 10:10 │ codecov.yml         │
│ 10 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ Jun 1 15:30  │ crates              │
│ 11 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ May 4 07:55  │ dict                │
│ 12 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ Mar 30 10:10 │ docker              │
│ 13 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 1.1K    │ Jun 12 07:03 │ rust-toolchain.toml │
│ 14 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ May 26 07:11 │ scripts             │
│ 15 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ Jun 15 07:14 │ src                 │
│ 16 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ Jun 21 09:48 │ target              │
│ 17 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ Jun 21 12:30 │ tests               │
│ 18 │ -rw-r--r-- │ 1       │ dschroeder │ 197121  │ 16K     │ Jun 21 14:16 │ toolkit.nu          │
│ 19 │ drwxr-xr-x │ 1       │ dschroeder │ 197121  │ 0       │ Jun 1 15:30  │ wix                 │
├────┼────────────┼─────────┼────────────┼─────────┼─────────┼──────────────┼─────────────────────┤
│  # │  column0   │ column1 │  column2   │ column3 │ column4 │   column5    │       column6       │
╰────┴────────────┴─────────┴────────────┴─────────┴─────────┴──────────────┴─────────────────────╯
```
Then you can fancy-it-up by tweaking the other columns and renaming
columns.
```
❯ ^ls -lh | detect columns --no-headers --skip 1 --combine-columns 5..7 | update column5 {|r| $r.column5 | into datetime} | into int column1 column3 | into filesize column4 | rename perms links user inode filesize datetime name
╭────┬────────────┬───────┬────────────┬────────┬──────────┬──────────────┬─────────────────────╮
│  # │   perms    │ links │    user    │ inode  │ filesize │   datetime   │        name         │
├────┼────────────┼───────┼────────────┼────────┼──────────┼──────────────┼─────────────────────┤
│  0 │ -rw-r--r-- │     1 │ dschroeder │ 197121 │   3.5 KB │ 2 months ago │ CODE_OF_CONDUCT.md  │
│  1 │ -rw-r--r-- │     1 │ dschroeder │ 197121 │  11.0 KB │ 2 days ago   │ CONTRIBUTING.md     │
│  2 │ -rw-r--r-- │     1 │ dschroeder │ 197121 │ 153.0 KB │ 2 days ago   │ Cargo.lock          │
│  3 │ -rw-r--r-- │     1 │ dschroeder │ 197121 │   5.7 KB │ 2 days ago   │ Cargo.toml          │
│  4 │ -rw-r--r-- │     1 │ dschroeder │ 197121 │    371 B │ 2 months ago │ Cross.toml          │
│  5 │ -rw-r--r-- │     1 │ dschroeder │ 197121 │   1.1 KB │ 2 months ago │ LICENSE             │
│  6 │ -rw-r--r-- │     1 │ dschroeder │ 197121 │  13.0 KB │ 2 days ago   │ README.md           │
│  7 │ drwxr-xr-x │     1 │ dschroeder │ 197121 │      0 B │ a month ago  │ assets              │
│  8 │ drwxr-xr-x │     1 │ dschroeder │ 197121 │      0 B │ 2 days ago   │ benches             │
│  9 │ -rw-r--r-- │     1 │ dschroeder │ 197121 │    310 B │ 2 months ago │ codecov.yml         │
│ 10 │ drwxr-xr-x │     1 │ dschroeder │ 197121 │      0 B │ 3 weeks ago  │ crates              │
│ 11 │ drwxr-xr-x │     1 │ dschroeder │ 197121 │      0 B │ 2 months ago │ dict                │
│ 12 │ drwxr-xr-x │     1 │ dschroeder │ 197121 │      0 B │ 2 months ago │ docker              │
│ 13 │ -rw-r--r-- │     1 │ dschroeder │ 197121 │   1.1 KB │ 2 weeks ago  │ rust-toolchain.toml │
│ 14 │ drwxr-xr-x │     1 │ dschroeder │ 197121 │      0 B │ 4 weeks ago  │ scripts             │
│ 15 │ drwxr-xr-x │     1 │ dschroeder │ 197121 │      0 B │ a week ago   │ src                 │
│ 16 │ drwxr-xr-x │     1 │ dschroeder │ 197121 │      0 B │ 2 days ago   │ target              │
│ 17 │ drwxr-xr-x │     1 │ dschroeder │ 197121 │      0 B │ 2 days ago   │ tests               │
│ 18 │ -rw-r--r-- │     1 │ dschroeder │ 197121 │  16.0 KB │ 2 days ago   │ toolkit.nu          │
│ 19 │ drwxr-xr-x │     1 │ dschroeder │ 197121 │      0 B │ 3 weeks ago  │ wix                 │
├────┼────────────┼───────┼────────────┼────────┼──────────┼──────────────┼─────────────────────┤
│  # │   perms    │ links │    user    │ inode  │ filesize │   datetime   │        name         │
╰────┴────────────┴───────┴────────────┴────────┴──────────┴──────────────┴─────────────────────╯
```
# User-Facing Changes
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# Tests + Formatting
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Don't forget to add tests that cover your changes.

Make sure you've run and fixed any issues with these commands:

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2023-06-23 16:19:08 -05:00
..
charting revert: move to ahash (#9464) 2023-06-18 15:27:57 +12:00
conversions move common tools from nu-command to nu-cmd-base (#9455) 2023-06-22 14:45:54 -07:00
database Add pattern matching (#8590) 2023-03-24 14:52:01 +13:00
date Update some help examples (#8759) 2023-04-05 18:36:00 -05:00
debug Apply nightly clippy fixes (#9381) 2023-06-08 18:49:58 +02:00
deprecated revert: move to ahash (#9464) 2023-06-18 15:27:57 +12:00
env revert: move to ahash (#9464) 2023-06-18 15:27:57 +12:00
experimental fix is-admin example (#9350) 2023-06-03 15:11:14 -05:00
filesystem Fix missing file names from rm errors (#9120) 2023-06-18 10:00:12 +02:00
filters revert: move to ahash (#9464) 2023-06-18 15:27:57 +12:00
formats Apply nightly clippy fixes (#9482) 2023-06-20 10:17:33 +02:00
generators Document and critically review ShellError variants - Ep. 2 (#8326) 2023-03-06 11:31:07 +01:00
hash move common tools from nu-command to nu-cmd-base (#9455) 2023-06-22 14:45:54 -07:00
help Break up interdependencies of command crates (#9429) 2023-06-14 23:12:55 +02:00
math revert: move to ahash (#9464) 2023-06-18 15:27:57 +12:00
misc REFACTOR: move source out of deprecated commands (#9060) 2023-05-04 00:02:03 +02:00
network move common tools from nu-command to nu-cmd-base (#9455) 2023-06-22 14:45:54 -07:00
path revert: move to ahash (#9464) 2023-06-18 15:27:57 +12:00
platform move common tools from nu-command to nu-cmd-base (#9455) 2023-06-22 14:45:54 -07:00
random Document and critically review ShellError variants - Ep. 3 (#8340) 2023-03-06 18:33:09 +01:00
shells Fix usage for the exit command. (#9450) 2023-06-16 10:09:02 +02:00
strings add the ability to combine columns with detect columns (#9511) 2023-06-23 16:19:08 -05:00
system revert: move to ahash (#9464) 2023-06-18 15:27:57 +12:00
viewers nu-table/ Fix indexing issue for table --expand (#9484) 2023-06-20 20:27:00 +12:00
default_context.rs cratification: move the bytes command to nu-cmd-extra (#9509) 2023-06-23 12:23:08 -07:00
example_test.rs revert: move to ahash (#9464) 2023-06-18 15:27:57 +12:00
hook.rs cratification: move the bytes command to nu-cmd-extra (#9509) 2023-06-23 12:23:08 -07:00
lib.rs cratification: move the bytes command to nu-cmd-extra (#9509) 2023-06-23 12:23:08 -07:00
progress_bar.rs cp progress bar implementation (#8012) 2023-02-22 11:57:38 -08:00
sort_utils.rs Support passing an empty list to sort, uniq, sort-by, and uniq-by (issue #5957) (#8669) 2023-03-29 19:55:38 -07:00