Struct HostMatcher 

pub struct HostMatcher { /* private fields */ }

A compiled set of blocked host names with subdomain-walk semantics.

Constructed once from a domain list, then shared (via Arc) across rule evaluations per request.

Implementations

impl HostMatcher

pub fn new(domains: impl IntoIterator<Item = String>) -> Self

Build a matcher from an iterator of domain strings.

Each entry is lowercased and leading/trailing whitespace stripped. Blank entries and those starting with # (comments) are silently ignored so the caller can pass lines from a plain-text host list directly.

pub fn len(&self) -> usize

Number of distinct blocked host names.

pub fn is_empty(&self) -> bool

Returns true if no hosts are blocked.

pub fn is_blocked(&self, host: &str) -> bool

Returns true if host is blocked.

Matching is suffix-on-dot: a.b.evil.com is blocked when evil.com (or any ancestor up to the bare root) is in the set.

• Exact match first.
• Then strips the leftmost label repeatedly until a match or exhausted.

host is compared case-insensitively.

Trait Implementations

impl Clone for HostMatcher

fn clone(&self) -> HostMatcher

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HostMatcher

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

Formats the value using the given formatter.