mirror of
https://github.com/spf13/cobra
synced 2024-12-29 15:57:10 +00:00
107 lines
3.6 KiB
Go
107 lines
3.6 KiB
Go
// Copyright 2013-2022 The Cobra Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cobra
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import (
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"bytes"
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"fmt"
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"io"
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"os"
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)
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func (c *Command) GenNushellCompletion(w io.Writer) error {
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buf := new(bytes.Buffer)
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WriteStringAndCheck(buf, fmt.Sprintf(`
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# A list of cobra that completion will be attempted for.
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# Add new apps to this list to enable completion for them.
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let cobra_apps = ["%[1]s"]
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# An external configurator that works with any cobra based
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# command line application (e.g. kubectl, minikube)
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let cobra_completer = {|spans|
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let cmd = $spans.0
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if not ($cobra_apps | where $it == $cmd | is-empty) {
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let ShellCompDirectiveError = %[2]d
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let ShellCompDirectiveNoSpace = %[3]d
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let ShellCompDirectiveNoFileComp = %[4]d
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let ShellCompDirectiveFilterFileExt = %[5]d
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let ShellCompDirectiveFilterDirs = %[6]d
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let last_span = ($spans | last | str trim)
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# skip the first entry in the span (the command) and join the rest of the span to create __complete args
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let cmd_args = ($spans | skip 1 | str join ' ')
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# If the last span entry was empty add "" to the end of the command args
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let cmd_args = if ($last_span | is-empty) {
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$'($cmd_args) ""'
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} else {
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$cmd_args
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}
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# The full command to be executed with active help disable (Nushell does not support active help)
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let full_cmd = $'($cmd)_ACTIVE_HELP=0 ($cmd) __complete ($cmd_args)'
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# Since nushell doesn't have anything like eval, execute in a subshell
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let result = (do -i { nu -c $"'($full_cmd)'" } | complete)
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# Create a record with all completion related info.
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# directive and directive_str are for posterity
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let stdout_lines = ($result.stdout | lines)
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let directive = ($stdout_lines | last | str trim | str replace ":" "" | into int)
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let completions = ($stdout_lines | drop | parse -r '([\w\-\.:\+\=]*)\t?(.*)' | rename value description)
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# Add space at the end of each completion
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let completions = if $directive != $ShellCompDirectiveNoSpace {
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($completions | each {|it| {value: $"($it.value) ", description: $it.description}})
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} else {
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$completions
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}
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if $last_span =~ '=$' {
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# return flag as part of the completion so that it doesn't get replaced
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$completions | each {|it| $"($last_span)($it.value)" }
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} else if $directive == $ShellCompDirectiveNoFileComp {
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# Allow empty results as this will stop file completion
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$completions
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} else if ($completions | is-empty) or $directive == $ShellCompDirectiveError {
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# Not returning null causes file completions to break
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# Return null if there are no completions or ShellCompDirectiveError
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null
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} else {
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$completions
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}
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} else {
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null
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}
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}
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`, c.Name(), ShellCompDirectiveError, ShellCompDirectiveNoSpace, ShellCompDirectiveNoFileComp,
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ShellCompDirectiveFilterFileExt, ShellCompDirectiveFilterDirs))
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_, err := buf.WriteTo(w)
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return err
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}
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func (c *Command) GenNushellCompletionFile(filename string) error {
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outFile, err := os.Create(filename)
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if err != nil {
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return err
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}
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defer outFile.Close()
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return c.GenNushellCompletion(outFile)
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}
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