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perf(crystal): Lazily evaluate version command (#2129)

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* perf(crystal): Lazily evaluate version command

This updates the module to lazily execute the `crystal --version`
command only when the `version` variable is used in the format string.

* perf(crystal): Update format string

Update format string to handle the `$version` variable not being set.
This commit is contained in:
Thomas O'Donnell 2021-01-13 18:35:44 +01:00 committed by GitHub
parent d49ff412f6
commit f640db87a4
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3 changed files with 13 additions and 12 deletions
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4
docs/config/README.md
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@ -568,10 +568,10 @@ The module will be shown if any of the following conditions are met:
### Options ### Options
| Option | Default | Description | | Option | Default | Description |
| ---------- | ---------------------------------- | --------------------------------------------------------- | | ---------- | ------------------------------------ | --------------------------------------------------------- |
| `symbol` | `"🔮 "` | The symbol used before displaying the version of crystal. | | `symbol` | `"🔮 "` | The symbol used before displaying the version of crystal. |
| `style` | `"bold red"` | The style for the module. | | `style` | `"bold red"` | The style for the module. |
| `format` | `"via [$symbol$version]($style) "` | The format for the module. | | `format` | `"via [$symbol($version )]($style)"` | The format for the module. |
| `disabled` | `false` | Disables the `crystal` module. | | `disabled` | `false` | Disables the `crystal` module. |
### Variables ### Variables

2
src/configs/crystal.rs
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@ -13,7 +13,7 @@ pub struct CrystalConfig<'a> {
impl<'a> RootModuleConfig<'a> for CrystalConfig<'a> { impl<'a> RootModuleConfig<'a> for CrystalConfig<'a> {
fn new() -> Self { fn new() -> Self {
CrystalConfig { CrystalConfig {
format: "via [$symbol$version]($style) ", format: "via [$symbol($version )]($style)",
symbol: "🔮 ", symbol: "🔮 ",
style: "bold red", style: "bold red",
disabled: false, disabled: false,

7
src/modules/crystal.rs
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@ -20,8 +20,6 @@ pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
return None; return None;
} }
let crystal_version = utils::exec_cmd("crystal", &["--version"])?.stdout;
let mut module = context.new_module("crystal"); let mut module = context.new_module("crystal");
let config: CrystalConfig = CrystalConfig::try_load(module.config); let config: CrystalConfig = CrystalConfig::try_load(module.config);
@ -36,7 +34,10 @@ pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
_ => None, _ => None,
}) })
.map(|variable| match variable { .map(|variable| match variable {
"version" => format_crystal_version(&crystal_version).map(Ok), "version" => format_crystal_version(
utils::exec_cmd("crystal", &["--version"])?.stdout.as_str(),
)
.map(Ok),
_ => None, _ => None,
}) })
.parse(None) .parse(None)