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Add --variables subcommand that prints variable names (#608)

Browse Source 
Add a subcommand that prints out a space-separated list of the names of
top-level variables in the justfile.

The syntax is:

    $ just --variables
    a b c

This can be used for any purpose, but is mostly intended for completion
scripts, so that they can get the names of variables without using
`--evaluate`.

Additionally:

- Add `bin/generate-completions` script to regenerate checked-in
  completions
- Update dependencies
- Regenerate checked-in completions
This commit is contained in:
Casey Rodarmor 2020-03-13 22:19:43 -07:00 committed by GitHub
parent 2b688d4858
commit 1dbc765390
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
12 changed files with 148 additions and 91 deletions
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5
.github/workflows/main.yaml vendored
View File

@ -61,10 +61,7 @@ jobs:
- name: Completion Scripts
if: matrix.os != 'windows-latest'
run: |
for script in completions/*; do
shell=${script##*.}
cargo run -- --completions $shell > $script
done
./bin/generate-completions
git diff --no-ext-diff --quiet --exit-code
- name: Package
id: package

155
Cargo.lock generated
View File

@ -2,10 +2,10 @@
# It is not intended for manual editing.
[[package]]
name = "aho-corasick"
version = "0.7.8"
version = "0.7.10"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"memchr 2.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
"memchr 2.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
@ -29,29 +29,29 @@ name = "atty"
version = "0.2.14"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"hermit-abi 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
"hermit-abi 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
"winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "backtrace"
version = "0.3.43"
version = "0.3.45"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"backtrace-sys 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
"backtrace-sys 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
"cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
"rustc-demangle 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "backtrace-sys"
version = "0.1.32"
version = "0.1.34"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"cc 1.0.50 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
@ -59,14 +59,6 @@ name = "bitflags"
version = "1.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "c2-chacha"
version = "0.2.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"ppv-lite86 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "cc"
version = "1.0.50"
@ -93,25 +85,25 @@ dependencies = [
[[package]]
name = "ctor"
version = "0.1.12"
version = "0.1.13"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
"syn 1.0.14 (registry+https://github.com/rust-lang/crates.io-index)",
"quote 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
"syn 1.0.16 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "ctrlc"
version = "3.1.3"
version = "3.1.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"nix 0.14.1 (registry+https://github.com/rust-lang/crates.io-index)",
"nix 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)",
"winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "derivative"
version = "1.0.3"
version = "1.0.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
@ -126,7 +118,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "doc-comment"
version = "0.3.1"
version = "0.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
@ -147,7 +139,7 @@ dependencies = [
"atty 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
"humantime 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
"log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
"regex 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
"regex 1.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
"termcolor 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
@ -158,10 +150,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "failure"
version = "0.1.6"
version = "0.1.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"backtrace 0.3.43 (registry+https://github.com/rust-lang/crates.io-index)",
"backtrace 0.3.45 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
@ -170,16 +162,16 @@ version = "0.1.14"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
"wasi 0.9.0+wasi-snapshot-preview1 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "hermit-abi"
version = "0.1.6"
version = "0.1.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
@ -197,14 +189,14 @@ dependencies = [
"ansi_term 0.12.1 (registry+https://github.com/rust-lang/crates.io-index)",
"atty 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
"clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
"ctrlc 3.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
"derivative 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
"ctrlc 3.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
"derivative 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
"dotenv 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
"edit-distance 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
"env_logger 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
"executable-path 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
"lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
"log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
"pretty_assertions 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
"snafu 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
@ -212,7 +204,7 @@ dependencies = [
"tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
"test-utilities 0.0.0",
"unicode-width 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
"which 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
"which 3.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
@ -222,7 +214,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "libc"
version = "0.2.66"
version = "0.2.67"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
@ -235,18 +227,18 @@ dependencies = [
[[package]]
name = "memchr"
version = "2.3.0"
version = "2.3.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "nix"
version = "0.14.1"
version = "0.17.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
"cc 1.0.50 (registry+https://github.com/rust-lang/crates.io-index)",
"cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
"void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
]
@ -269,7 +261,7 @@ version = "0.6.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
"ctor 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
"ctor 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
"difference 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
"output_vt100 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
]
@ -284,7 +276,7 @@ dependencies = [
[[package]]
name = "proc-macro2"
version = "1.0.8"
version = "1.0.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@ -305,10 +297,10 @@ dependencies = [
[[package]]
name = "quote"
version = "1.0.2"
version = "1.0.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
"proc-macro2 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
@ -317,18 +309,18 @@ version = "0.7.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"getrandom 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
"rand_chacha 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
"rand_chacha 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
"rand_core 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
"rand_hc 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "rand_chacha"
version = "0.2.1"
version = "0.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"c2-chacha 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
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"rand_core 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
]
@ -355,18 +347,18 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "regex"
version = "1.3.4"
version = "1.3.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"aho-corasick 0.7.8 (registry+https://github.com/rust-lang/crates.io-index)",
"memchr 2.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
"regex-syntax 0.6.14 (registry+https://github.com/rust-lang/crates.io-index)",
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[[package]]
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source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
@ -387,7 +379,7 @@ name = "snafu"
version = "0.6.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
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@ -396,9 +388,9 @@ name = "snafu-derive"
version = "0.6.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
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[[package]]
@ -418,11 +410,11 @@ dependencies = [
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name = "syn"
version = "1.0.14"
version = "1.0.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -437,7 +429,7 @@ version = "3.1.0"
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@ -507,11 +499,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
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@ -542,57 +534,56 @@ version = "0.4.0"
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@ -604,7 +595,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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8
bin/generate-completions Executable file
View File

@ -0,0 +1,8 @@
#!/usr/bin/env bash
set -euxo pipefail
for script in completions/*; do
shell=${script##*.}
cargo run -- --completions $shell > $script
done

2
completions/just.bash
View File

@ -20,7 +20,7 @@ _just() {
case "${cmd}" in
just)
opts=" -q -v -e -l -h -V -f -d -s --dry-run --highlight --no-highlight --quiet --clear-shell-args --verbose --dump --edit --evaluate --init --list --summary --help --version --color --justfile --set --shell --shell-arg --working-directory --completions --show <ARGUMENTS>... "
opts=" -q -v -e -l -h -V -f -d -s --dry-run --highlight --no-highlight --quiet --clear-shell-args --verbose --dump --edit --evaluate --init --list --summary --variables --help --version --color --justfile --set --shell --shell-arg --working-directory --completions --show <ARGUMENTS>... "
if [[ ${cur} == -* || ${COMP_CWORD} -eq 1 ]] ; then
COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
return 0

1
completions/just.elvish
View File

@ -42,6 +42,7 @@ edit:completion:arg-completer[just] = [@words]{
cand -l 'List available recipes and their arguments'
cand --list 'List available recipes and their arguments'
cand --summary 'List names of available recipes'
cand --variables 'List names of variables'
cand -h 'Print help information'
cand --help 'Print help information'
cand -V 'Print version information'

1
completions/just.fish
View File

@ -18,5 +18,6 @@ complete -c just -n "__fish_use_subcommand" -l evaluate -d 'Print evaluated vari
complete -c just -n "__fish_use_subcommand" -l init -d 'Initialize new justfile in project root'
complete -c just -n "__fish_use_subcommand" -s l -l list -d 'List available recipes and their arguments'
complete -c just -n "__fish_use_subcommand" -l summary -d 'List names of available recipes'
complete -c just -n "__fish_use_subcommand" -l variables -d 'List names of variables'
complete -c just -n "__fish_use_subcommand" -s h -l help -d 'Print help information'
complete -c just -n "__fish_use_subcommand" -s V -l version -d 'Print version information'

1
completions/just.powershell
View File

@ -47,6 +47,7 @@ Register-ArgumentCompleter -Native -CommandName 'just' -ScriptBlock {
[CompletionResult]::new('-l', 'l', [CompletionResultType]::ParameterName, 'List available recipes and their arguments')
[CompletionResult]::new('--list', 'list', [CompletionResultType]::ParameterName, 'List available recipes and their arguments')
[CompletionResult]::new('--summary', 'summary', [CompletionResultType]::ParameterName, 'List names of available recipes')
[CompletionResult]::new('--variables', 'variables', [CompletionResultType]::ParameterName, 'List names of variables')
[CompletionResult]::new('-h', 'h', [CompletionResultType]::ParameterName, 'Print help information')
[CompletionResult]::new('--help', 'help', [CompletionResultType]::ParameterName, 'Print help information')
[CompletionResult]::new('-V', 'V', [CompletionResultType]::ParameterName, 'Print version information')

1
completions/just.zsh
View File

@ -42,6 +42,7 @@ _just() {
'-l[List available recipes and their arguments]' \
'--list[List available recipes and their arguments]' \
'--summary[List names of available recipes]' \
'--variables[List names of variables]' \
'-h[Print help information]' \
'--help[Print help information]' \
'-V[Print version information]' \

3
justfile
View File

@ -157,6 +157,9 @@ watch-readme:
just render-readme
fswatch -ro README.adoc | xargs -n1 -I{} just render-readme
generate-completions:
./bin/generate-completions
# run all polyglot recipes
polyglot: _python _js _perl _sh _ruby
# (recipes that start with `_` are hidden from --list)

49
src/config.rs
View File

@ -23,6 +23,7 @@ pub(crate) struct Config {
}
mod cmd {
pub(crate) const COMPLETIONS: &str = "COMPLETIONS";
pub(crate) const DUMP: &str = "DUMP";
pub(crate) const EDIT: &str = "EDIT";
pub(crate) const EVALUATE: &str = "EVALUATE";
@ -30,10 +31,30 @@ mod cmd {
pub(crate) const LIST: &str = "LIST";
pub(crate) const SHOW: &str = "SHOW";
pub(crate) const SUMMARY: &str = "SUMMARY";
pub(crate) const COMPLETIONS: &str = "COMPLETIONS";
pub(crate) const VARIABLES: &str = "VARIABLES";
pub(crate) const ALL: &[&str] = &[COMPLETIONS, DUMP, EDIT, INIT, EVALUATE, LIST, SHOW, SUMMARY];
pub(crate) const ARGLESS: &[&str] = &[COMPLETIONS, DUMP, EDIT, INIT, LIST, SHOW, SUMMARY];
pub(crate) const ALL: &[&str] = &[
COMPLETIONS,
DUMP,
EDIT,
INIT,
EVALUATE,
LIST,
SHOW,
SUMMARY,
VARIABLES,
];
pub(crate) const ARGLESS: &[&str] = &[
COMPLETIONS,
DUMP,
EDIT,
INIT,
LIST,
SHOW,
SUMMARY,
VARIABLES,
];
}
mod arg {
@ -206,6 +227,11 @@ impl Config {
.long("summary")
.help("List names of available recipes"),
)
.arg(
Arg::with_name(cmd::VARIABLES)
.long("variables")
.help("List names of variables"),
)
.group(ArgGroup::with_name("SUBCOMMAND").args(cmd::ALL));
if cfg!(feature = "help4help2man") {
@ -345,6 +371,8 @@ impl Config {
});
}
Subcommand::Evaluate { overrides }
} else if matches.is_present(cmd::VARIABLES) {
Subcommand::Variables
} else {
Subcommand::Run {
arguments: positional.arguments,
@ -419,13 +447,14 @@ impl Config {
match &self.subcommand {
Dump => Self::dump(justfile),
Evaluate { overrides } => self.run(justfile, &search, overrides, &Vec::new()),
List => self.list(justfile),
Run {
arguments,
overrides,
} => self.run(justfile, &search, overrides, arguments),
List => self.list(justfile),
Show { ref name } => Self::show(&name, justfile),
Summary => Self::summary(justfile),
Variables => Self::variables(justfile),
Completions { .. } | Edit | Init => unreachable!(),
}
}
@ -635,6 +664,17 @@ impl Config {
}
Ok(())
}
fn variables(justfile: Justfile) -> Result<(), i32> {
for (i, (_, assignment)) in justfile.assignments.iter().enumerate() {
if i > 0 {
print!(" ");
}
print!("{}", assignment.name)
}
println!();
Ok(())
}
}
#[cfg(test)]
@ -668,6 +708,7 @@ FLAGS:
--no-highlight Don't highlight echoed recipe lines in bold
-q, --quiet Suppress all output
--summary List names of available recipes
--variables List names of variables
-v, --verbose Use verbose output
OPTIONS:

1
src/subcommand.rs
View File

@ -20,4 +20,5 @@ pub(crate) enum Subcommand {
name: String,
},
Summary,
Variables,
}

12
tests/integration.rs
View File

@ -2459,3 +2459,15 @@ test! {
status: EXIT_SUCCESS,
shell: false,
}
test! {
name: variables,
justfile: "
z := 'a'
a := 'z'
",
args: ("--variables"),
stdout: "a z\n",
stderr: "",
shell: false,
}