Struct dropbox_content_hasher::DropboxContentHasher

pub struct DropboxContentHasher { /* fields omitted */ }

Computes a hash using the same algorithm that the Dropbox API uses for the the "content_hash" metadata field.

Implements the digest::Digest trait, whose result() function returns a raw binary representation of the hash. The "content_hash" field in the Dropbox API is a hexadecimal-encoded version of this value.

For examples see hash_file and hash_reader, for an using this object directly see the source of hash_reader.

Methods

impl DropboxContentHasher

pub fn new() -> Self

pub fn hash_file<T>(path: T) -> Result<GenericArray<u8, Self::OutputSize>> where     T: AsRef<Path>,

Return the content_hash for a given file, or an io::Error from either opening or reading the file.

extern crate digest;
use dropbox_content_hasher::DropboxContentHasher;
use std::path::PathBuf;

let path = PathBuf::from("src/lib.rs");

let hex_hash = format!("{:x}", DropboxContentHasher::hash_file(&path).unwrap());
println!("{}", hex_hash);

pub fn hash_reader<T>(reader: T) -> Result<GenericArray<u8, Self::OutputSize>> where     T: Read,

Return the content_hash for a given object implementing Read, or an io::Error resulting from trying to read its contents.

extern crate digest;
use dropbox_content_hasher::DropboxContentHasher;

let mut f = std::fs::File::open("src/lib.rs").unwrap();

let hex_hash = format!("{:x}", DropboxContentHasher::hash_reader(&mut f).unwrap());
println!("{}", hex_hash);

Trait Implementations

impl Default for DropboxContentHasher

fn default() -> Self

Returns the "default value" for a type.

impl Clone for DropboxContentHasher

fn clone(&self) -> DropboxContentHasher

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DropboxContentHasher

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

Formats the value using the given formatter.

impl Reset for DropboxContentHasher

fn reset(&mut self)

Reset hasher instance to its initial state and return current state.

impl FixedOutput for DropboxContentHasher

type OutputSize = <Sha256 as FixedOutput>::OutputSize

fn fixed_result(self) -> GenericArray<u8, Self::OutputSize>

Retrieve result and consume hasher instance.

impl Input for DropboxContentHasher

fn input<B: AsRef<[u8]>>(&mut self, data: B)

Digest input data.

fn chain<B>(self, data: B) -> Self where     B: AsRef<[u8]>,

Digest input data in a chained manner.

impl BlockInput for DropboxContentHasher

type BlockSize = U64