comparison mercurial/revlog.py @ 41303:c953c2a94d68 stable

revlog: fix resolution of revlog version 0

This partially backs out cecf3f8bccd3, "revlog: always process opener options."

My understanding is that if there's no "revlog1" nor "revlog2" in .hg/requires,
the repository should stick to the v0 format. The reasoning is briefly
described in 31a5973fcf96, "revlog: get rid of defversion."

Maybe we can drop support for missing opener options, but I didn't do that
in this patch.

41301:13c23396c7fe

            newversionflags = REVLOGV2 | FLAG_INLINE_DATA
        elif 'revlogv1' in opts:
            newversionflags = REVLOGV1 | FLAG_INLINE_DATA
            if 'generaldelta' in opts:
                newversionflags |= FLAG_GENERALDELTA
        else:
            newversionflags = REVLOG_DEFAULT_VERSION

        if 'chunkcachesize' in opts:
            self._chunkcachesize = opts['chunkcachesize']

41303:c953c2a94d68

            newversionflags = REVLOGV2 | FLAG_INLINE_DATA
        elif 'revlogv1' in opts:
            newversionflags = REVLOGV1 | FLAG_INLINE_DATA
            if 'generaldelta' in opts:
                newversionflags |= FLAG_GENERALDELTA
        elif getattr(self.opener, 'options', None) is not None:
            # If options provided but no 'revlog*' found, the repository
            # would have no 'requires' file in it, which means we have to
            # stick to the old format.
            newversionflags = REVLOGV0
        else:
            newversionflags = REVLOG_DEFAULT_VERSION

        if 'chunkcachesize' in opts:
            self._chunkcachesize = opts['chunkcachesize']