Struct rust_car::unixfs::Link

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pub struct Link { /* private fields */ }

Implementations§

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impl Link

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pub fn new(hash: Cid, name: String, tsize: u64) -> Self

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pub fn hash(&self) -> Cid

Examples found in repository ?

examples/cat_cid.rs (line 28)

fn main() {
    // let cid = std::env::args().nth(1).expect("use cid as argument");
    let cid = "bafkreiaqv66m5nd6mwgkk7h5lwqnjzj54s4f7knmnrjhb7ylzqfg2vdo54";
    let file = std::path::Path::new("test");
    let file = file.join("carv1-basic.car");
    let file = std::fs::File::open(file).unwrap();
    let mut reader = reader::new_v1(file).unwrap();
    let roots = reader.header().roots();
    let file_cid = Cid::try_from(cid).expect("cid format error");
    for r in roots.iter() {
        let root_ipld = reader.ipld(r).unwrap();
        let root: Result<UnixFs, CarError> = root_ipld.try_into();
        let root_dir = root.unwrap();
        let count = root_dir
            .links()
            .iter()
            .filter(|u| u.hash() == file_cid)
            .count();
        if count > 0 {
            cat_ipld(&mut reader, file_cid).unwrap();
        }
    }
}

More examples

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examples/ls.rs (line 29)

fn walk(vecq: &mut VecDeque<Cid>, reader: &mut impl CarReader) {
    let mut cache: HashMap<Cid, String> = HashMap::new();
    let raw_code: u64 = RawCodec.into();
    while let Some(file_cid) = vecq.pop_front() {
        let codec = file_cid.codec();
        let file_n = cache.get(&file_cid).map_or(file_cid.to_string(), |c| c.to_string());
        println!("{file_n}");
        if codec == raw_code {
            continue;
        }
        let file_ipld: Ipld = reader.ipld(&file_cid).unwrap();
        match file_ipld {
            m @ Ipld::Map(_) => {
                let unixfs: UnixFs = m.try_into().unwrap();
                match unixfs.file_type() {
                    FileType::Directory => {},
                    _=> continue,
                }
                for n in unixfs.links().into_iter() {
                    let cid = n.hash();
                    cache.insert(cid, file_n.clone() + "/" + n.name_ref());
                    vecq.push_back(cid);
                }
            }
            _ => {}
        }
    }
}

source

pub fn name_ref(&self) -> &str

Examples found in repository ?

examples/ls.rs (line 30)

fn walk(vecq: &mut VecDeque<Cid>, reader: &mut impl CarReader) {
    let mut cache: HashMap<Cid, String> = HashMap::new();
    let raw_code: u64 = RawCodec.into();
    while let Some(file_cid) = vecq.pop_front() {
        let codec = file_cid.codec();
        let file_n = cache.get(&file_cid).map_or(file_cid.to_string(), |c| c.to_string());
        println!("{file_n}");
        if codec == raw_code {
            continue;
        }
        let file_ipld: Ipld = reader.ipld(&file_cid).unwrap();
        match file_ipld {
            m @ Ipld::Map(_) => {
                let unixfs: UnixFs = m.try_into().unwrap();
                match unixfs.file_type() {
                    FileType::Directory => {},
                    _=> continue,
                }
                for n in unixfs.links().into_iter() {
                    let cid = n.hash();
                    cache.insert(cid, file_n.clone() + "/" + n.name_ref());
                    vecq.push_back(cid);
                }
            }
            _ => {}
        }
    }
}