Struct PuzzleFsCache 

pub struct PuzzleFsCache { /* private fields */ }

A file system backed implementation of PuzzleCache.

Cached puzzle data is grouped together by day and year into a directory. The cache layout follows this general pattern:

<cache_dir>/y//input.encrypted.txt /part-1-answers.txt /part-2-answers.txt

cache_dir is specified when PuzzleFsCache::new(...) is called. year is four digit puzzle year. day is the puzzle day with no leading zeroes, and starting from index one.

Encryption: If a passphrase is configured, inputs are automatically encrypted when saved and decrypted when loaded. The .encrypted.txt suffix indicates an encrypted file. Unencrypted input files use the .txt extension.

Implementations

impl PuzzleFsCache

pub fn new<P: Into<PathBuf>, S: Into<String>>( cache_dir: P, passphrase: Option<S>, ) -> Self

Creates a new PuzzleFsCache that reads/writes cache data stored in cache_dir. Inputs are are encrypted on disk using the provided passphrase.

pub fn dir_for_puzzle(cache_dir: &Path, day: Day, year: Year) -> PathBuf

Get the directory path for a puzzle day and year.

pub fn input_file_path( cache_dir: &Path, day: Day, year: Year, encrypted: bool, ) -> PathBuf

Returns the file path for puzzle input, with the appropriate extension based on encryption status.

pub fn answers_file_path( cache_dir: &Path, part: Part, day: Day, year: Year, ) -> PathBuf

Returns the file path for answers of a given part.

Trait Implementations

impl Debug for PuzzleFsCache

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

Formats the value using the given formatter.

impl PuzzleCache for PuzzleFsCache

fn load_input(&self, day: Day, year: Year) -> Result<Option<String>, CacheError>

Load input for the given day and year. Returns the decrypted input if cached, or Ok(None) if no cache entry exists.

fn load_answers( &self, part: Part, day: Day, year: Year, ) -> Result<Option<Answers>, CacheError>

Load answers for the given part, day and year. Returns Ok(None) if no cache entry exists.

fn save(&self, puzzle: Puzzle) -> Result<(), CacheError>

Save a puzzle’s input and answers for both parts to the cache.

fn save_input( &self, input: &str, day: Day, year: Year, ) -> Result<(), CacheError>

Save input for the given day and year. The input is encrypted before being written to disk if a passphrase is provided. Any previously saved input for this day and year will be overwritten.

fn save_answers( &self, answers: &Answers, part: Part, day: Day, year: Year, ) -> Result<(), CacheError>

Save answers for the given part, day and year. Any previously saved answers for this day and year will be overwritten.