Charlie Marsh
ee2fca3a48
## Summary Even if this will typically be in the user's application folder (rather than a local directory), it's still a good practice. Closes https://github.com/astral-sh/puffin/issues/280.
44 lines
1.3 KiB
Rust
44 lines
1.3 KiB
Rust
#![cfg(feature = "clap")]
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use std::io;
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use std::path::PathBuf;
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use clap::Parser;
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use directories::ProjectDirs;
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use crate::Cache;
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#[derive(Parser, Debug, Clone)]
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pub struct CacheArgs {
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/// Avoid reading from or writing to the cache.
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#[arg(global = true, long, short)]
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no_cache: bool,
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/// Path to the cache directory.
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#[arg(global = true, long, env = "PUFFIN_CACHE_DIR")]
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cache_dir: Option<PathBuf>,
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}
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impl TryFrom<CacheArgs> for Cache {
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type Error = io::Error;
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/// Prefer, in order:
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/// 1. A temporary cache directory, if the user requested `--no-cache`.
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/// 2. The specific cache directory specified by the user via `--cache-dir` or `PUFFIN_CACHE_DIR`.
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/// 3. The system-appropriate cache directory.
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/// 4. A `.puffin_cache` directory in the current working directory.
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///
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/// Returns an absolute cache dir.
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fn try_from(value: CacheArgs) -> Result<Self, Self::Error> {
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if value.no_cache {
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Cache::temp()
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} else if let Some(cache_dir) = value.cache_dir {
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Cache::from_path(cache_dir)
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} else if let Some(project_dirs) = ProjectDirs::from("", "", "puffin") {
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Cache::from_path(project_dirs.cache_dir())
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} else {
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Cache::from_path(".puffin_cache")
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}
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}
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}
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