You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: shard.rs
    path of file: ./repos/holochain/crates/hdi/src/hash_path
    
    the code of the file until where you have to start completion: use crate::hash_path::path::Component;
use crate::hash_path::path::Path;
use std::str::FromStr;

/// Separates the shard width and depth.
pub const SHARDSPLIT: &str = ":";
/// Terminates the end of a shard shorthand.
pub const SHARDEND: &str = "#";

/// The width of a shard is how many bytes/characters to use for each path component in sharding.
/// e.g. abcdef with width 1 shards to a.b.c.d.e.f.abcd
    
    fn from((strategy, s): (&ShardStrategy, &str)) -> Path {
        // Truncate the string to only relevant chars.
        let full_length = strategy.width() * strategy.depth();
        let shard_string: String = s.chars().take(full_length as _).collect();

        Path::from((
            &ShardStrategy(
                // Relies on the fact that we're encoding string characters as fixed width u32
                // bytes rather than variable width utf8 bytes.
                strategy.width() * std::mem::size_of::<u32>() as u32,
                strategy.depth(),
            ),
            // Defer to the standard utf32 string handling to get the fixed size byte and endian
            // handling correct.
            Component::from(&shard_string).as_ref(),
        ))
    }