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use std::fs;
use std::io;
use std::path::Path;
use std::path::PathBuf;
use clap::crate_version;
use bat::assets::HighlightingAssets;
use bat::assets_metadata::AssetsMetadata;
use bat::error::*;
pub fn clear_assets(cache_dir: &Path) {
clear_asset(cache_dir.join("themes.bin"), "theme set cache");
clear_asset(cache_dir.join("syntaxes.bin"), "syntax set cache");
clear_asset(cache_dir.join("metadata.yaml"), "metadata file");
}
pub fn assets_from_cache_or_binary(
use_custom_assets: bool,
cache_dir: &Path,
) -> Result<HighlightingAssets> {
if let Some(metadata) = AssetsMetadata::load_from_folder(cache_dir)? {
if !metadata.is_compatible_with(crate_version!()) {
return Err(format!(
"The binary caches for the user-customized syntaxes and themes \
in '{}' are not compatible with this version of bat ({}). To solve this, \
either rebuild the cache (bat cache --build) or remove \
the custom syntaxes/themes (bat cache --clear).\n\
For more information, see:\n\n \
https://github.com/sharkdp/bat#adding-new-syntaxes--language-definitions",
cache_dir.to_string_lossy(),
crate_version!()
)
.into());
}
}
let custom_assets = if use_custom_assets {
HighlightingAssets::from_cache(cache_dir).ok()
} else {
None
};
Ok(custom_assets.unwrap_or_else(HighlightingAssets::from_binary))
}
fn clear_asset(path: PathBuf, description: &str) {
print!("Clearing {description} ... ");
match fs::remove_file(&path) {
Err(err) if err.kind() == io::ErrorKind::NotFound => {
println!("skipped (not present)");
}
Err(err) => {
println!("could not remove the cache file {:?}: {}", &path, err);
}
Ok(_) => println!("okay"),
}
}
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