fsmon 0.2.5

Lightweight High-Performance File System Change Tracking Tool
Documentation 
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use anyhow::Result;
use fsmon::filters::{self, PathOptions};
use fsmon::managed::PathEntry;
use fsmon::EventType;
use fsmon::utils::parse_size_filter;
use std::path::PathBuf;

mod add;
mod clean;
mod daemon;
mod init_cd;
mod manage;
mod query;
mod remove;

pub use add::cmd_add;
pub use clean::cmd_clean;
pub use daemon::cmd_daemon;
pub use init_cd::{cmd_cd, cmd_init};
pub use manage::{cmd_list_managed_paths, cmd_managed};
pub use query::cmd_query;
pub use remove::cmd_remove;

/// Top-level dispatch: match command enum and call the corresponding handler.
pub fn run(command: crate::Commands) -> Result<()> {
    use crate::Commands::*;
    match command {
        Daemon => cmd_daemon().await_(),
        Add(args) => cmd_add(args),
        Remove { paths } => {
            for path in paths {
                eprintln!("[Info] Removing {}...", path.display());
                cmd_remove(path)?;
            }
            Ok(())
        }
        Managed => cmd_managed(),
        Query(args) => cmd_query(args).await_(),
        Clean(args) => cmd_clean(args).await_(),
        Init => cmd_init(),
        Cd => cmd_cd(),
        ListManagedPaths => cmd_list_managed_paths(),
    }
}

/// Convert async functions to sync by running in a new runtime.
/// Used because `run()` is called from sync `main()`.
trait AsyncPolyfill {
    type Output;
    fn await_(self) -> Self::Output;
}

impl<T> AsyncPolyfill for T where T: std::future::Future<Output = Result<()>> {
    type Output = Result<()>;
    fn await_(self) -> Self::Output {
        tokio::runtime::Runtime::new().unwrap().block_on(self)
    }
}

/// Convert `PathEntry` list to `(PathBuf, PathOptions)` pairs.
pub fn parse_path_entries(entries: &[PathEntry]) -> Result<Vec<(PathBuf, PathOptions)>> {
    let mut result = Vec::new();
    for entry in entries {
        let opts = parse_path_options(entry)?;
        result.push((entry.path.clone(), opts));
    }
    Ok(result)
}

/// Convert a single `PathEntry` to `PathOptions`.
pub fn parse_path_options(entry: &PathEntry) -> Result<PathOptions> {
    let size_filter = entry.size.as_ref().map(|s| parse_size_filter(s)).transpose()?;
    let event_types = entry
        .types
        .as_ref()
        .map(|v| {
            v.iter()
                .map(|s| s.parse::<EventType>())
                .collect::<std::result::Result<Vec<_>, _>>()
        })
        .transpose()
        .map_err(|e: String| anyhow::anyhow!(e))?;
    let (exclude_regex, exclude_invert) = filters::build_exclude_regex(entry.exclude.as_deref(), "exclude")?;
    let (exclude_cmd_regex, exclude_cmd_invert) = filters::build_exclude_regex(entry.exclude_cmd.as_deref(), "--exclude-cmd")?;
    Ok(PathOptions {
        size_filter,
        event_types,
        exclude_regex,
        exclude_invert,
        exclude_cmd_regex,
        exclude_cmd_invert,
        recursive: entry.recursive.unwrap_or(false),
    })
}