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Add logic for managing language and theme extensions (#7467)

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This PR adds the initial support for loading extensions in Zed.

### Extensions Directory

Extensions are loaded from the extensions directory.

The extensions directory has the following structure:

```
extensions/
  installed/
    extension-a/
      grammars/
      languages/
    extension-b/
      themes/
  manifest.json
```

The `manifest.json` file is used internally by Zed to keep track of
which extensions are installed. This file should be maintained
automatically, and shouldn't require any direct interaction with it.

Extensions can provide Tree-sitter grammars, languages, and themes.

Release Notes:

- N/A

---------

Co-authored-by: Marshall <marshall@zed.dev>
This commit is contained in:
Max Brunsfeld 2024-02-07 12:14:50 -08:00 • committed by GitHub
parent 6b598a07d9
commit 6edeea7c8a
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77 changed files with 1503 additions and 387 deletions
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14
crates/theme/src/registry.rs
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@ -194,7 +194,9 @@ impl ThemeRegistry {
}
pub fn list_names(&self, _staff: bool) -> Vec<SharedString> {
self.state.read().themes.keys().cloned().collect()
let mut names = self.state.read().themes.keys().cloned().collect::<Vec<_>>();
names.sort();
names
}
pub fn list(&self, _staff: bool) -> Vec<ThemeMeta> {
@ -263,11 +265,17 @@ impl ThemeRegistry {
Ok(())
}
/// Loads the user theme from the specified path and adds it to the registry.
pub async fn load_user_theme(&self, theme_path: &Path, fs: Arc<dyn Fs>) -> Result<()> {
pub async fn read_user_theme(theme_path: &Path, fs: Arc<dyn Fs>) -> Result<ThemeFamilyContent> {
let reader = fs.open_sync(&theme_path).await?;
let theme = serde_json_lenient::from_reader(reader)?;
Ok(theme)
}
/// Loads the user theme from the specified path and adds it to the registry.
pub async fn load_user_theme(&self, theme_path: &Path, fs: Arc<dyn Fs>) -> Result<()> {
let theme = Self::read_user_theme(theme_path, fs).await?;
self.insert_user_theme_families([theme]);
Ok(())