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Viewing changes to bzrlib/versionedfile.py

  • Committer: Robert Collins
  • Date: 2007-07-25 00:52:21 UTC
  • mfrom: (2650 +trunk)
  • mto: This revision was merged to the branch mainline in revision 2651.
  • Revision ID: robertc@robertcollins.net-20070725005221-0ysm6il5mqnme3wz
Merge bzr.dev.

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bzrlib/versionedfile.py
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from bzrlib import (
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    errors,
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    osutils,
 
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    multiparent,
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    tsort,
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    revision,
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    ui,
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from bzrlib.transport.memory import MemoryTransport
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""")
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from cStringIO import StringIO
 
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from bzrlib.inter import InterObject
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from bzrlib.textmerge import TextMerge
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from bzrlib.symbol_versioning import (deprecated_function,
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            result[version_id] = self.get_delta(version_id)
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        return result
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    def make_mpdiffs(self, version_ids):
 
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        """Create multiparent diffs for specified versions"""
 
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        knit_versions = set()
 
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        for version_id in version_ids:
 
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            knit_versions.add(version_id)
 
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            knit_versions.update(self.get_parents(version_id))
 
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        lines = dict(zip(knit_versions,
 
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            self._get_lf_split_line_list(knit_versions)))
 
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        diffs = []
 
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        for version_id in version_ids:
 
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            target = lines[version_id]
 
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            parents = [lines[p] for p in self.get_parents(version_id)]
 
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            if len(parents) > 0:
 
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                left_parent_blocks = self._extract_blocks(version_id,
 
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                                                          parents[0], target)
 
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            else:
 
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                left_parent_blocks = None
 
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            diffs.append(multiparent.MultiParent.from_lines(target, parents,
 
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                         left_parent_blocks))
 
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        return diffs
 
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    def _extract_blocks(self, version_id, source, target):
 
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        return None
 
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    def add_mpdiffs(self, records):
 
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        """Add mpdiffs to this versionedfile
 
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        Records should be iterables of version, parents, expected_sha1,
 
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        mpdiff.  mpdiff should be a MultiParent instance.
 
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        """
 
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        vf_parents = {}
 
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        for version, parents, expected_sha1, mpdiff in records:
 
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            mpvf = multiparent.MultiMemoryVersionedFile()
 
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            needed_parents = [p for p in parents if not mpvf.has_version(p)]
 
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            parent_lines = self._get_lf_split_line_list(needed_parents)
 
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            for parent_id, lines in zip(needed_parents, parent_lines):
 
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                mpvf.add_version(lines, parent_id, [])
 
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            mpvf.add_diff(mpdiff, version, parents)
 
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            lines = mpvf.get_line_list([version])[0]
 
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            version_text = self.add_lines(version, parents, lines, vf_parents)
 
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            vf_parents[version] = version_text
 
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            if expected_sha1 != self.get_sha1(version):
 
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                raise errors.VersionedFileInvalidChecksum(version)
 
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    def get_sha1(self, version_id):
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        """Get the stored sha1 sum for the given revision.
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        """
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        raise NotImplementedError(self.get_sha1)
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    def get_sha1s(self, version_ids):
 
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        """Get the stored sha1 sums for the given revisions.
 
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        :param version_ids: The names of the versions to lookup
 
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        :return: a list of sha1s in order according to the version_ids
 
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        """
 
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        raise NotImplementedError(self.get_sha1)
 
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    def get_suffixes(self):
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        """Return the file suffixes associated with this versioned file."""
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        raise NotImplementedError(self.get_suffixes)
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        """
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        raise NotImplementedError(self.get_lines)
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    def _get_lf_split_line_list(self, version_ids):
 
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        return [StringIO(t).readlines() for t in self.get_texts(version_ids)]
 
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    def get_ancestry(self, version_ids, topo_sorted=True):
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        """Return a list of all ancestors of given version(s). This
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        will not include the null revision.