comparison rust/hg-core/src/revlog/index.rs @ 45531:b0d6309ff50c

hg-core: check data integrity in `Revlog`

Check that the hash of the data reconstructed from deltas
matches the hash stored in the revision.

Differential Revision: https://phab.mercurial-scm.org/D9005

45530:b1cea0dc9db0

use crate::revlog::{Revision, NULL_REVISION};
use byteorder::{BigEndian, ByteOrder};

pub const INDEX_ENTRY_SIZE: usize = 64;

/// A Revlog index
#[derive(Debug)]

    pub fn base_revision(&self) -> Revision {
        // TODO Maybe return an Option when base_revision == rev?
        //      Requires to add rev to IndexEntry

        BigEndian::read_i32(&self.bytes[16..])
    }
}

#[cfg(test)]
mod tests {

45531:b0d6309ff50c

use byteorder::{BigEndian, ByteOrder};

use crate::revlog::{Revision, NULL_REVISION};

pub const INDEX_ENTRY_SIZE: usize = 64;

/// A Revlog index
#[derive(Debug)]

    pub fn base_revision(&self) -> Revision {
        // TODO Maybe return an Option when base_revision == rev?
        //      Requires to add rev to IndexEntry

        BigEndian::read_i32(&self.bytes[16..])
    }

    pub fn p1(&self) -> Revision {
        BigEndian::read_i32(&self.bytes[24..])
    }

    pub fn p2(&self) -> Revision {
        BigEndian::read_i32(&self.bytes[28..])
    }

    /// Return the hash of revision's full text.
    ///
    /// Currently, SHA-1 is used and only the first 20 bytes of this field
    /// are used.
    pub fn hash(&self) -> &[u8] {
        &self.bytes[32..52]
    }
}

#[cfg(test)]
mod tests {