Struct EnvSnapshot 

pub struct EnvSnapshot { /* private fields */ }

A snapshot of the shell environment at a point in time.

Implementations

impl EnvSnapshot

pub fn new(vars: HashMap<String, String>, cwd: String) -> Self

Create a snapshot from the given variables and working directory.

pub fn capture_current() -> Self

Capture the current process environment, skipping bash-internal vars.

pub fn vars(&self) -> &HashMap<String, String>

The environment variables in this snapshot.

Examples

use reef::env_diff::EnvSnapshot;
let snap = EnvSnapshot::capture_current();
assert!(snap.vars().contains_key("HOME"));

pub fn cwd(&self) -> &str

The working directory in this snapshot.

Examples

use reef::env_diff::EnvSnapshot;
let snap = EnvSnapshot::capture_current();
assert!(!snap.cwd().is_empty());

pub fn diff_into(&self, after: &EnvSnapshot, out: &mut String)

Diff two snapshots, writing fish commands into a single buffer.

Appends newline-separated commands like set -gx VAR value, set -e VAR, or cd /new/path to out. Uses a single allocation instead of one String per command.

pub fn diff(&self, after: &EnvSnapshot) -> String

Diff two snapshots, returning fish commands as a newline-separated string.

Convenience wrapper around diff_into that allocates and returns a new String.

Trait Implementations

impl Clone for EnvSnapshot

fn clone(&self) -> EnvSnapshot

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for EnvSnapshot

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.