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Add record module (#679)
Add a module to manipulate records.
It can be a potential candidate to nu's standard library ?
Take a look at the name of the functions to see if they respect naming
convention (or if you have better ideas of course 😉 )
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Gabin Lefranc
GitHub
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@ -20,6 +20,7 @@
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- [nvim](#nvim)
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- [progress\_bar](#progress_bar)
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- [rbenv](#rbenv)
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- [record](#record)
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- [system](#system)
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- [virtual\_environments](#virtual_environments)
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- [weather](#weather)
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@ -168,6 +169,9 @@ It is basically a join of the tables produced by the `lsof` command, and the nus
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## [rbenv](./rbenv/)
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??? (not sure how universal this is) This script provides minimal working rbenv setup.
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## [record](./record/)
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A module to manipulate nu's record
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## [system](./system/)
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Currently holds the `clip` command which was previously incorrectly in the standard library of Nushell.
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```nushell
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121
stdlib-candidate/record/README.md
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121
stdlib-candidate/record/README.md
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@ -0,0 +1,121 @@
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# Record module
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A module to manipulate nu's records.
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## `record list merge`
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### Input/output types:
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|#|input|output|
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|-|-|-|
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|1|list\<record>|record|
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### Example
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```nu
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> [{a:1} {b:2} {c:3}] | record list merge
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╭───┬───╮
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│ a │ 1 │
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│ b │ 2 │
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│ c │ 3 │
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╰───┴───╯
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```
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## `record filter-name predicate`
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Filter a record by validating fields name with a predicate.
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### Input/output types:
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|#|input|output|
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|-|-|-|
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|1|record|record|
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## Arguments
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* `pred`: Predicate closure that checks fields name
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### Example
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```nu
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> $env | record filter-name predicate { $in | str contains VS}
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╭───────────────────────────────┬───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
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│ VSCODE_GIT_ASKPASS_EXTRA_ARGS │ --ms-enable-electron-run-as-node │
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│ VSCODE_GIT_ASKPASS_MAIN │ /Applications/Visual Studio Code.app/Contents/Resources/app/extensions/git/dist/askpass-main.js │
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│ VSCODE_GIT_ASKPASS_NODE │ /Applications/Visual Studio Code.app/Contents/Frameworks/Code Helper (Plugin).app/Contents/MacOS/Code Helper (Plugin) │
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│ VSCODE_GIT_IPC_HANDLE │ /var/folders/_x/25cgjd3n2sn62x6jfc9ccjjw0000gn/T/vscode-git-56538693f8.sock │
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╰───────────────────────────────┴───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
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```
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## `record filter-name text`
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Filter a record by validating fields name with text.
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### Input/output types:
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|#|input|output|
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|-|-|-|
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|1|record|record|
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## Arguments
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* `filter`: Text to match with
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* `--regex(-r)`: Match by regex
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### Examples
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```nu
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> $env | record filter-name text VS
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╭───────────────────────────────┬───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
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│ VSCODE_GIT_ASKPASS_EXTRA_ARGS │ --ms-enable-electron-run-as-node │
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│ VSCODE_GIT_ASKPASS_MAIN │ /Applications/Visual Studio Code.app/Contents/Resources/app/extensions/git/dist/askpass-main.js │
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│ VSCODE_GIT_ASKPASS_NODE │ /Applications/Visual Studio Code.app/Contents/Frameworks/Code Helper (Plugin).app/Contents/MacOS/Code Helper (Plugin) │
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│ VSCODE_GIT_IPC_HANDLE │ /var/folders/_x/25cgjd3n2sn62x6jfc9ccjjw0000gn/T/vscode-git-56538693f8.sock │
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╰───────────────────────────────┴───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
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> $env | record filter-name text --regex V.*S
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╭───────────────────────────────┬───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
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│ │ ╭──────┬──────────────────────────────────╮ │
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│ ENV_CONVERSIONS │ │ │ ╭─────────────┬────────────────╮ │ │
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│ │ │ PATH │ │ from_string │ <Closure 1399> │ │ │
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│ │ │ │ │ to_string │ <Closure 1401> │ │ │
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│ │ │ │ ╰─────────────┴────────────────╯ │ │
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│ │ │ │ ╭─────────────┬────────────────╮ │ │
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│ │ │ Path │ │ from_string │ <Closure 1403> │ │ │
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│ │ │ │ │ to_string │ <Closure 1405> │ │ │
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│ │ │ │ ╰─────────────┴────────────────╯ │ │
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│ │ ╰──────┴──────────────────────────────────╯ │
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│ LC_TERMINAL_VERSION │ 3.4.22 │
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│ NU_VERSION │ 0.87.0 │
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│ PROMPT_INDICATOR_VI_INSERT │ <Closure 1395> │
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│ TERM_PROGRAM_VERSION │ 1.84.2 │
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│ VSCODE_GIT_ASKPASS_EXTRA_ARGS │ --ms-enable-electron-run-as-node │
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│ VSCODE_GIT_ASKPASS_MAIN │ /Applications/Visual Studio Code.app/Contents/Resources/app/extensions/git/dist/askpass-main.js │
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│ VSCODE_GIT_ASKPASS_NODE │ /Applications/Visual Studio Code.app/Contents/Frameworks/Code Helper (Plugin).app/Contents/MacOS/Code Helper (Plugin) │
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│ VSCODE_GIT_IPC_HANDLE │ /var/folders/_x/25cgjd3n2sn62x6jfc9ccjjw0000gn/T/vscode-git-56538693f8.sock │
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╰───────────────────────────────┴───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
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```
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## `record filter-value predicate`
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Filter a record by validating fields value with predicate.
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### Input/output types:
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|#|input|output|
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|-|-|-|
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|1|record|record|
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## Arguments
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* `pred`: Predicate closure that checks fields value
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### Example
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```nu
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> {a:1 b:2 c:3 d:4} | record filter-value predicate { $in mod 2 == 0 }
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╭───┬───╮
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│ b │ 2 │
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│ d │ 4 │
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╰───┴───╯
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```
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69
stdlib-candidate/record/mod.nu
Normal file
69
stdlib-candidate/record/mod.nu
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@ -0,0 +1,69 @@
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# Merge a list of records
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export def "list merge" []: list<record> -> record {
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let list = $in
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mut result = {}
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for $obj in $list {
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$result = ($result | merge $obj)
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}
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$result
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}
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# Filter fields name by predicate
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export def "filter-name predicate" [
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pred: closure # Predicate closure that checks fields name
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]: record -> record {
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let $obj_input = $in
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$obj_input
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| columns
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| where { $in | do $pred }
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| each {|input|
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{ $input: ($obj_input | get $input) }
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}
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| list merge
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}
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# Filter fields name by text checking
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export def "filter-name text" [
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filter: string # Text to match with
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--regex(-r) # Match by regex
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]: record -> record {
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let obj = $in
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$obj | filter-name predicate { not ($in | (if $regex {find -r $filter} else {find $filter}) | is-empty) }
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}
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# Filter fields value by predicate
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export def "filter-value predicate" [
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pred: closure # Predicate closure that checks fields value
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]: record -> record {
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let $obj_input = $in
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$obj_input
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| columns
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| where {|col| $obj_input | get $col | do $pred }
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| each {|input|
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{ $input: ($obj_input | get $input) }
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}
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| list merge
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}
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#[test]
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def test_record_list_merge [] {
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use std assert
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assert equal ([{a:1} {b:2} {c:3} {d:4}] | list merge) {a:1 b:2 c:3 d:4}
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}
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#[test]
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def test_record_filtername_predicate [] {
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use std assert
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assert equal ({aa:1 ab:2 ba:3 bb:4 ca:5 cb:6} | filter-name predicate {$in | str contains a}) {aa:1 ab:2 ba:3 ca:5}
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}
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#[test]
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def test_record_filtername_text [] {
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use std assert
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assert equal ({aa:1 ab:2 ba:3 bb:4 ca:5 cb:6} | filter-name text a) {aa:1 ab:2 ba:3 ca:5}
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assert equal ({aa:1 ab:2 ba:3 bb:4 ca:5 cb:6} | filter-name text -r ^a) {aa:1 ab:2}
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assert equal ({aa:1 ab:2 ba:3 bb:4 ca:5 cb:6} | filter-name text -r ^A) {}
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}
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#[test]
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def test_record_filtervalue_predicate [] {
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use std assert
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assert equal ({aa:1 ab:2 ba:3 bb:4 ca:5 cb:6} | filter-value predicate { $in mod 2 == 0 }) {ab:2 bb:4 cb:6}
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}
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