Trait CompressionPattern 

pub trait CompressionPattern: Send + Sync {
    // Required methods
    fn name(&self) -> &str;
    fn matches(&self, command: &str) -> bool;
    fn compress(&self, command: &str, output: &str) -> Option<String>;
    fn prefixes(&self) -> &[&str];

    // Provided method
    fn version(&self) -> u32 { ... }
}

Plugin-ready trait for shell output compression patterns.

Each pattern matches a specific CLI tool (or family of tools) and compresses its output into a token-efficient representation.

Existing patterns implement this via the blanket compress(cmd, output) functions. Future plugins will register implementations dynamically.

Required Methods

fn name(&self) -> &str

Human-readable name for this pattern (e.g. “cargo”, “git”, “docker”).

fn matches(&self, command: &str) -> bool

Returns true if this pattern can handle the given command. Called during dispatch to find the appropriate pattern.

fn compress(&self, command: &str, output: &str) -> Option<String>

Compress the shell output for the matched command. Returns None if the pattern cannot produce a shorter result.

fn prefixes(&self) -> &[&str]

Command prefixes this pattern handles (for documentation/discovery).

Provided Methods

fn version(&self) -> u32

Version of this pattern’s output format. Bump when the compressed output structure changes to maintain determinism guarantees.

Implementors