Struct FileSystemLoader 

pub struct FileSystemLoader { /* private fields */ }

Loads template files from a directory. Names are relative paths under root (POSIX-style separators work on all platforms). .., absolute paths, and Windows path prefixes in name are rejected. Resolved paths are canonicalized so symbolic links cannot escape root.

Implementations

impl FileSystemLoader

pub fn new(root: impl AsRef<Path>) -> Result<Self>

Creates a loader rooted at root (must exist; canonicalized for containment checks).

Trait Implementations

impl Debug for FileSystemLoader

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

Formats the value using the given formatter.

impl TemplateLoader for FileSystemLoader

fn load(&self, name: &str) -> Result<String>

fn cache_key(&self, name: &str) -> Option<String>

When Some, parsed templates for this name may be cached in crate::Environment. Return None for loaders whose sources are not stable by name (e.g. dynamic closures).

fn cache_key_cow<'a>(&self, name: &'a str) -> Option<Cow<'a, str>>

Borrow-friendly variant of Self::cache_key.

fn cache_keys_are_stable(&self) -> bool

Whether sources are immutable for keys returned by Self::cache_key while this loader instance is alive. When true, crate::Environment may reuse parsed ASTs for named templates without reloading source on every render.