prek 0.5.3

A fast Git hook manager written in Rust, designed as a drop-in alternative to pre-commit, reimagined.
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use std::io::Write;
use std::path::Path;
use std::sync::Arc;

use anyhow::Result;

use crate::cli::reporter::HookInstallReporter;
use crate::cli::run::HookRunReporter;
use crate::hook::{Hook, InstallInfo, InstalledHook};
use crate::languages::LanguageBackend;
use crate::store::Store;

#[derive(Debug, Copy, Clone)]
pub(crate) struct Fail;

#[async_trait::async_trait(?Send)]
impl LanguageBackend for Fail {
    async fn install(
        &self,
        _store: &Store,
        hook: Arc<Hook>,
        _install_cwd: &Path,
        _reporter: &HookInstallReporter,
    ) -> Result<InstalledHook> {
        Ok(InstalledHook::NoNeedInstall(hook))
    }

    async fn check_health(&self, _info: &InstallInfo) -> Result<()> {
        Ok(())
    }

    async fn run(
        &self,
        _store: &Store,
        hook: &InstalledHook,
        filenames: &[&Path],
        _reporter: &HookRunReporter,
    ) -> Result<(i32, Vec<u8>)> {
        let entry = hook.entry.expect_argv_entry();
        let mut out = Vec::new();
        writeln!(out, "{}\n", entry.raw())?;
        for f in filenames {
            out.extend(f.to_string_lossy().as_bytes());
            out.push(b'\n');
        }
        out.push(b'\n');

        Ok((1, out))
    }
}