comparison mercurial/revlog.py @ 47257:87d057137f82

revlog: apply compression mode while reading sidedata

Right now, we only store things as PLAIN, but we are ready for some compression
now. Future changeset will start using some.

Differential Revision: https://phab.mercurial-scm.org/D10654

47256:2b69555e4875

        if self._inline:
            sidedata_offset += self.index.entry_size * (1 + rev)
        if sidedata_size == 0:
            return {}

        segment = self._getsegment(sidedata_offset, sidedata_size)
        sidedata = sidedatautil.deserialize_sidedata(segment)
        return sidedata

    def rawdata(self, nodeorrev, _df=None):
        """return an uncompressed raw data of a given node or revision number.

47257:87d057137f82

        if self._inline:
            sidedata_offset += self.index.entry_size * (1 + rev)
        if sidedata_size == 0:
            return {}

        comp_segment = self._getsegment(sidedata_offset, sidedata_size)
        comp = self.index[rev][11]
        if comp == COMP_MODE_PLAIN:
            segment = comp_segment
        elif comp == COMP_MODE_DEFAULT:
            segment = self._decompressor(comp_segment)
        elif comp == COMP_MODE_INLINE:
            segment = self.decompress(comp_segment)
        else:
            msg = 'unknown compression mode %d'
            msg %= comp
            raise error.RevlogError(msg)

        sidedata = sidedatautil.deserialize_sidedata(segment)
        return sidedata

    def rawdata(self, nodeorrev, _df=None):
        """return an uncompressed raw data of a given node or revision number.