use super::*;
#[derive(ValueEnum, Debug, Clone, Copy, PartialEq)]
pub enum Shell {
Bash,
Elvish,
Fish,
#[value(alias = "nu")]
Nushell,
Powershell,
Zsh,
}
impl Shell {
pub fn script(self) -> RunResult<'static, String> {
match self {
Self::Bash => completions::clap(clap_complete::Shell::Bash),
Self::Elvish => completions::clap(clap_complete::Shell::Elvish),
Self::Fish => completions::clap(clap_complete::Shell::Fish),
Self::Nushell => Ok(completions::NUSHELL_COMPLETION_SCRIPT.into()),
Self::Powershell => completions::clap(clap_complete::Shell::PowerShell),
Self::Zsh => completions::clap(clap_complete::Shell::Zsh),
}
}
}
fn clap(shell: clap_complete::Shell) -> RunResult<'static, String> {
fn replace(haystack: &mut String, needle: &str, replacement: &str) -> RunResult<'static, ()> {
if let Some(index) = haystack.find(needle) {
haystack.replace_range(index..index + needle.len(), replacement);
Ok(())
} else {
Err(Error::internal(format!(
"Failed to find text:\n{needle}\n…in completion script:\n{haystack}"
)))
}
}
let mut script = {
let mut tempfile = tempfile().map_err(|io_error| Error::TempfileIo { io_error })?;
clap_complete::generate(
shell,
&mut crate::config::Config::app(),
env!("CARGO_PKG_NAME"),
&mut tempfile,
);
tempfile
.rewind()
.map_err(|io_error| Error::TempfileIo { io_error })?;
let mut buffer = String::new();
tempfile
.read_to_string(&mut buffer)
.map_err(|io_error| Error::TempfileIo { io_error })?;
buffer
};
match shell {
clap_complete::Shell::Bash => {
for (needle, replacement) in completions::BASH_COMPLETION_REPLACEMENTS {
replace(&mut script, needle, replacement)?;
}
}
clap_complete::Shell::Fish => {
script.insert_str(0, completions::FISH_RECIPE_COMPLETIONS);
}
clap_complete::Shell::PowerShell => {
for (needle, replacement) in completions::POWERSHELL_COMPLETION_REPLACEMENTS {
replace(&mut script, needle, replacement)?;
}
}
clap_complete::Shell::Zsh => {
for (needle, replacement) in completions::ZSH_COMPLETION_REPLACEMENTS {
replace(&mut script, needle, replacement)?;
}
}
_ => {}
}
Ok(script.trim().into())
}
const NUSHELL_COMPLETION_SCRIPT: &str = r#"def "nu-complete just" [] {
(^just --dump --unstable --dump-format json | from json).recipes | transpose recipe data | flatten | where {|row| $row.private == false } | select recipe doc parameters | rename value description
}
# Just: A Command Runner
export extern "just" [
...recipe: string@"nu-complete just", # Recipe(s) to run, may be with argument(s)
]"#;
const FISH_RECIPE_COMPLETIONS: &str = r#"function __fish_just_complete_recipes
if string match -rq '(-f|--justfile)\s*=?(?<justfile>[^\s]+)' -- (string split -- ' -- ' (commandline -pc))[1]
set -fx JUST_JUSTFILE "$justfile"
end
just --list 2> /dev/null | tail -n +2 | awk '{
command = $1;
args = $0;
desc = "";
delim = "";
sub(/^[[:space:]]*[^[:space:]]*/, "", args);
gsub(/^[[:space:]]+|[[:space:]]+$/, "", args);
if (match(args, /#.*/)) {
desc = substr(args, RSTART+2, RLENGTH);
args = substr(args, 0, RSTART-1);
gsub(/^[[:space:]]+|[[:space:]]+$/, "", args);
}
gsub(/\+|=[`\'"][^`\'"]*[`\'"]/, "", args);
gsub(/ /, ",", args);
if (args != ""){
args = "Args: " args;
}
if (args != "" && desc != "") {
delim = "; ";
}
print command "\t" args delim desc
}'
end
# don't suggest files right off
complete -c just -n "__fish_is_first_arg" --no-files
# complete recipes
complete -c just -a '(__fish_just_complete_recipes)'
# autogenerated completions
"#;
const ZSH_COMPLETION_REPLACEMENTS: &[(&str, &str)] = &[
(
r#" _arguments "${_arguments_options[@]}" : \"#,
r" local common=(",
),
(
r"'*--set=[Override <VARIABLE> with <VALUE>]:VARIABLE:_default:VARIABLE:_default' \",
r"'*--set=[Override <VARIABLE> with <VALUE>]: :(_just_variables)' \",
),
(
r"'()-s+[Show recipe at <PATH>]:PATH:_default' \
'()--show=[Show recipe at <PATH>]:PATH:_default' \",
r"'-s+[Show recipe at <PATH>]: :(_just_commands)' \
'--show=[Show recipe at <PATH>]: :(_just_commands)' \",
),
(
"'*::ARGUMENTS -- Overrides and recipe(s) to run, defaulting to the first recipe in the \
justfile:_default' \\
&& ret=0",
r#")
_arguments "${_arguments_options[@]}" $common \
'1: :_just_commands' \
'*: :->args' \
&& ret=0
case $state in
args)
curcontext="${curcontext%:*}-${words[2]}:"
local lastarg=${words[${#words}]}
local recipe
local cmds; cmds=(
${(s: :)$(_call_program commands just --summary)}
)
# Find first recipe name
for ((i = 2; i < $#words; i++ )) do
if [[ ${cmds[(I)${words[i]}]} -gt 0 ]]; then
recipe=${words[i]}
break
fi
done
if [[ $lastarg = */* ]]; then
# Arguments contain slash would be recognised as a file
_arguments -s -S $common '*:: :_files'
elif [[ $lastarg = *=* ]]; then
# Arguments contain equal would be recognised as a variable
_message "value"
elif [[ $recipe ]]; then
# Show usage message
_message "`just --show $recipe`"
# Or complete with other commands
#_arguments -s -S $common '*:: :_just_commands'
else
_arguments -s -S $common '*:: :_just_commands'
fi
;;
esac
return ret
"#,
),
(
" local commands; commands=()",
r#" [[ $PREFIX = -* ]] && return 1
integer ret=1
local variables; variables=(
${(s: :)$(_call_program commands just --variables)}
)
local commands; commands=(
${${${(M)"${(f)$(_call_program commands just --list)}":# *}/ ##/}/ ##/:Args: }
)
"#,
),
(
r#" _describe -t commands 'just commands' commands "$@""#,
r#" if compset -P '*='; then
case "${${words[-1]%=*}#*=}" in
*) _message 'value' && ret=0 ;;
esac
else
_describe -t variables 'variables' variables -qS "=" && ret=0
_describe -t commands 'just commands' commands "$@"
fi
"#,
),
(
r#"_just "$@""#,
r#"(( $+functions[_just_variables] )) ||
_just_variables() {
[[ $PREFIX = -* ]] && return 1
integer ret=1
local variables; variables=(
${(s: :)$(_call_program commands just --variables)}
)
if compset -P '*='; then
case "${${words[-1]%=*}#*=}" in
*) _message 'value' && ret=0 ;;
esac
else
_describe -t variables 'variables' variables && ret=0
fi
return ret
}
_just "$@""#,
),
];
const POWERSHELL_COMPLETION_REPLACEMENTS: &[(&str, &str)] = &[(
r#"$completions.Where{ $_.CompletionText -like "$wordToComplete*" } |
Sort-Object -Property ListItemText"#,
r#"function Get-JustFileRecipes([string[]]$CommandElements) {
$justFileIndex = $commandElements.IndexOf("--justfile");
if ($justFileIndex -ne -1 -and $justFileIndex + 1 -le $commandElements.Length) {
$justFileLocation = $commandElements[$justFileIndex + 1]
}
$justArgs = @("--summary")
if (Test-Path $justFileLocation) {
$justArgs += @("--justfile", $justFileLocation)
}
$recipes = $(just @justArgs) -split ' '
return $recipes | ForEach-Object { [CompletionResult]::new($_) }
}
$elementValues = $commandElements | Select-Object -ExpandProperty Value
$recipes = Get-JustFileRecipes -CommandElements $elementValues
$completions += $recipes
$completions.Where{ $_.CompletionText -like "$wordToComplete*" } |
Sort-Object -Property ListItemText"#,
)];
const BASH_COMPLETION_REPLACEMENTS: &[(&str, &str)] = &[
(
r#" if [[ ${cur} == -* || ${COMP_CWORD} -eq 1 ]] ; then
COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
return 0
fi"#,
r#" if [[ ${cur} == -* ]] ; then
COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
return 0
elif [[ ${COMP_CWORD} -eq 1 ]]; then
local recipes=$(just --summary 2> /dev/null)
if echo "${cur}" | \grep -qF '/'; then
local path_prefix=$(echo "${cur}" | sed 's/[/][^/]*$/\//')
local recipes=$(just --summary 2> /dev/null -- "${path_prefix}")
local recipes=$(printf "${path_prefix}%s\t" $recipes)
fi
if [[ $? -eq 0 ]]; then
COMPREPLY=( $(compgen -W "${recipes}" -- "${cur}") )
return 0
fi
fi"#,
),
(
r"local i cur prev opts cmd",
r"local i cur prev words cword opts cmd",
),
(
r#" cur="${COMP_WORDS[COMP_CWORD]}"
prev="${COMP_WORDS[COMP_CWORD-1]}""#,
r#"
# Modules use "::" as the separator, which is considered a wordbreak character in bash.
# The _get_comp_words_by_ref function is a hack to allow for exceptions to this rule without
# modifying the global COMP_WORDBREAKS environment variable.
if type _get_comp_words_by_ref &>/dev/null; then
_get_comp_words_by_ref -n : cur prev words cword
else
cur="${COMP_WORDS[COMP_CWORD]}"
prev="${COMP_WORDS[COMP_CWORD-1]}"
words=$COMP_WORDS
cword=$COMP_CWORD
fi
"#,
),
(r"for i in ${COMP_WORDS[@]}", r"for i in ${words[@]}"),
(
r"elif [[ ${COMP_CWORD} -eq 1 ]]; then",
r"elif [[ ${cword} -eq 1 ]]; then",
),
(
r#"COMPREPLY=( $(compgen -W "${recipes}" -- "${cur}") )"#,
r#"COMPREPLY=( $(compgen -W "${recipes}" -- "${cur}") )
if type __ltrim_colon_completions &>/dev/null; then
__ltrim_colon_completions "$cur"
fi"#,
),
];