~matthiasbeyer/imag

3be9407c6c7cb95833537198a092cdc902579e49 — Matthias Beyer 2 years ago b2dffff
Add Linkable::is_linked_to()

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
1 files changed, 33 insertions(+), 2 deletions(-)

M lib/entry/libimagentrylink/src/linkable.rs
M lib/entry/libimagentrylink/src/linkable.rs => lib/entry/libimagentrylink/src/linkable.rs +33 -2
@@ 62,6 62,8 @@ pub trait Linkable {
    /// Remove a directional link: self -> otehr
    fn remove_link_to(&mut self, other: &mut Entry) -> Result<()>;

    /// Check whether an entry is linked to another entry
    fn is_linked_to(&self, other: &Entry) -> Result<bool>;
}

#[derive(Serialize, Deserialize, Debug)]


@@ 274,6 276,35 @@ impl Linkable for Entry {
        })
    }

    /// Check whether an entry is linked to another entry
    fn is_linked_to(&self, other: &Entry) -> Result<bool> {
        let left_partial  = get_link_partial(self)?
            .ok_or_else(|| format_err!("Cannot read links from {}", self.get_location()))?;
        let right_partial = get_link_partial(&other)?
            .ok_or_else(|| format_err!("Cannot read links from {}", other.get_location()))?;

        let left_id       = self.get_location();
        let right_id      = other.get_location();

        let strary_contains = |sary: &Vec<String>, id: &StoreId| -> Result<bool> {
            sary.iter().map(|e| {
                StoreId::new(PathBuf::from(e)).map(|e| e == *id)
            }).fold(Ok(false), |a, e| a.and_then(|_| e))
        };

        let is_linked_from = |partial: &LinkPartial, id| {
            partial.from.as_ref().map(|f| strary_contains(f, id)).unwrap_or(Ok(false))
        };
        let is_linked_to   = |partial: &LinkPartial, id| {
            partial.to.as_ref().map(|t| strary_contains(t, id)).unwrap_or(Ok(false))
        };

        Ok({
            is_linked_from(&left_partial, &right_id)? && is_linked_from(&right_partial, &left_id)?
            ||
            is_linked_to(&left_partial, &right_id)? && is_linked_to(&right_partial, &left_id)?
        })
    }
}

fn link_string_iter_to_link_iter<I>(iter: I) -> Result<LinkIter>


@@ 294,8 325,8 @@ fn alter_linking<F>(left: &mut Entry, right: &mut Entry, f: F) -> Result<()>
        Ok(get_link_partial(e)?.unwrap_or_else(LinkPartial::default))
    };

    let left_partial : LinkPartial = get_partial(left)?;
    let right_partial : LinkPartial = get_partial(right)?;
    let left_partial : LinkPartial = get_partial(&left)?;
    let right_partial : LinkPartial = get_partial(&right)?;

    trace!("Partial left before: {:?}", left_partial);
    trace!("Partial right before: {:?}", right_partial);