mercurial/revlog.py

4983:4dbcfc6e359e

        and can be used to implement COW semantics or the like.
        """
        self.indexfile = indexfile
        self.datafile = indexfile[:-2] + ".d"
        self.opener = opener

        self.indexstat = None
        self.cache = None
        self._chunkcache = None
        self.defversion = REVLOG_DEFAULT_VERSION
        if hasattr(opener, "defversion"):
            self.defversion = opener.defversion
            if self.defversion & REVLOGNG:

    def revision(self, node):
        """return an uncompressed revision of a given"""
        if node == nullid:
            return ""
        if self.cache and self.cache[0] == node:
            return self.cache[2]

        # look up what we need to read
        text = None
        rev = self.rev(node)
        base = self.base(rev)

            df = None
        else:
            df = self.opener(self.datafile)

        # do we have useful data cached?
        if self.cache and self.cache[1] >= base and self.cache[1] < rev:
            base = self.cache[1]
            text = self.cache[2]
            self._loadindex(base, rev + 1)
        else:
            self._loadindex(base, rev + 1)
            text = self.chunk(base, df=df)

        p1, p2 = self.parents(node)
        if node != hash(text, p1, p2):
            raise RevlogError(_("integrity check failed on %s:%d")
                              % (self.datafile, rev))

        self.cache = (node, rev, text)
        return text

    def checkinlinesize(self, tr, fp=None):
        if not self._inline:
            return

            ifh.write(entry)
            ifh.write(data[0])
            ifh.write(data[1])
            self.checkinlinesize(transaction, ifh)

        self.cache = (node, curr, text)
        return node

    def ancestor(self, a, b):
        """calculate the least common ancestor of nodes a and b"""

        indexf = self.opener(self.indexfile, "a")
        indexf.truncate(end)

        # then reset internal state in memory to forget those revisions
        self.cache = None
        self._chunkcache = None
        for x in xrange(rev, self.count()):
            del self.nodemap[self.node(x)]

        del self.index[rev:-1]

4984:b4066fcbd6ba

        and can be used to implement COW semantics or the like.
        """
        self.indexfile = indexfile
        self.datafile = indexfile[:-2] + ".d"
        self.opener = opener
        self.indexstat = None
        self._cache = None
        self._chunkcache = None
        self.defversion = REVLOG_DEFAULT_VERSION
        if hasattr(opener, "defversion"):
            self.defversion = opener.defversion
            if self.defversion & REVLOGNG:

    def revision(self, node):
        """return an uncompressed revision of a given"""
        if node == nullid:
            return ""
        if self._cache and self._cache[0] == node:
            return self._cache[2]

        # look up what we need to read
        text = None
        rev = self.rev(node)
        base = self.base(rev)

            df = None
        else:
            df = self.opener(self.datafile)

        # do we have useful data cached?
        if self._cache and self._cache[1] >= base and self._cache[1] < rev:
            base = self._cache[1]
            text = self._cache[2]
            self._loadindex(base, rev + 1)
        else:
            self._loadindex(base, rev + 1)
            text = self.chunk(base, df=df)

        p1, p2 = self.parents(node)
        if node != hash(text, p1, p2):
            raise RevlogError(_("integrity check failed on %s:%d")
                              % (self.datafile, rev))

        self._cache = (node, rev, text)
        return text

    def checkinlinesize(self, tr, fp=None):
        if not self._inline:
            return

            ifh.write(entry)
            ifh.write(data[0])
            ifh.write(data[1])
            self.checkinlinesize(transaction, ifh)

        self._cache = (node, curr, text)
        return node

    def ancestor(self, a, b):
        """calculate the least common ancestor of nodes a and b"""

        indexf = self.opener(self.indexfile, "a")
        indexf.truncate(end)

        # then reset internal state in memory to forget those revisions
        self._cache = None
        self._chunkcache = None
        for x in xrange(rev, self.count()):
            del self.nodemap[self.node(x)]

        del self.index[rev:-1]