bip_util 0.2.0

Utilities for the Bittorrent Infrastructure Project
Documentation 
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use sha1::{Sha1};

use sha::{self, ShaHash};

/// Building ShaHash objects by adding byte slices to the hash.
#[derive(Clone)]
pub struct ShaHashBuilder {
    sha: Sha1
}

impl ShaHashBuilder {
    /// Create a new ShaHashBuilder.
    pub fn new() -> ShaHashBuilder {
        ShaHashBuilder{ sha: Sha1::new() }
    }
    
    /// Add bytes to the ShaHashBuilder.
    pub fn add_bytes(mut self, bytes: &[u8]) -> ShaHashBuilder {
        self.sha.update(bytes);
        
        self
    }
    
    /// Build the ShaHash from the ShaHashBuilder.
    pub fn build(&self) -> ShaHash {
        let mut buffer = [0u8; sha::SHA_HASH_LEN];
        
        self.sha.output(&mut buffer);
        
        buffer.into()
    }
}