rebase: add boolean config item rebase.store-source
This allows to use rebase without recording a rebase_source extra
field. This is useful for example to build a mirror converted from
another SCM (such as svn) by converting only new revisions, and
then incrementally add them to the destination by pulling from the
newly converted (unrelated) repo and rebasing the new revisions
onto the last old already stored changeset. Without this patch the
rebased changesets would always receive some rebase_source that
would depend on the particular history of the conversion process,
instead of only depending on the original source revisions.
This is used to implement a hg mirror repo of SvarDOS (a partially
nonfree but completely redistributable DOS distribution) in the
scripts at https://hg.pushbx.org/ecm/svardos.scr/
In particular, cre.sh creates an svn mirror, upd.sh recreates an
entire hg repo from the svn mirror (which takes too long to do in a
regular job), and akt.sh uses hg convert with the config item
convert.svn.startrev to incrementally convert only the two most
recent revisions already found in the mirror destination plus any
possible new revisions. If any are found, the temporary repo's
changesets are pulled into the destination (as changesets from an
unrelated repository). Then the changesets corresponding to the new
revisions are rebased onto the prior final changeset. (Finally, the
two remaining duplicates of the prior head and its parent are
stripped from the destination repository.)
Without this patch, the particular rebase_source extra field would
depend on the order and times at which akt.sh was used, instead of
only depending on the source repository. In other words, whatever
sequence of upd.sh and akt.sh is used at whatever times, it is
desired that the final output repositories always match each other
exactly.
import contextlib
from . import util as interfaceutil
class idirstate(interfaceutil.Interface):
def __init__(
opener,
ui,
root,
validate,
sparsematchfn,
nodeconstants,
use_dirstate_v2,
):
"""Create a new dirstate object.
opener is an open()-like callable that can be used to open the
dirstate file; root is the root of the directory tracked by
the dirstate.
"""
# TODO: all these private methods and attributes should be made
# public or removed from the interface.
_ignore = interfaceutil.Attribute("""Matcher for ignored files.""")
def _ignorefiles():
"""Return a list of files containing patterns to ignore."""
def _ignorefileandline(f):
"""Given a file `f`, return the ignore file and line that ignores it."""
_checklink = interfaceutil.Attribute("""Callable for checking symlinks.""")
_checkexec = interfaceutil.Attribute("""Callable for checking exec bits.""")
@contextlib.contextmanager
def parentchange():
"""Context manager for handling dirstate parents.
If an exception occurs in the scope of the context manager,
the incoherent dirstate won't be written when wlock is
released.
"""
def pendingparentchange():
"""Returns true if the dirstate is in the middle of a set of changes
that modify the dirstate parent.
"""
def hasdir(d):
pass
def flagfunc(buildfallback):
pass
def getcwd():
"""Return the path from which a canonical path is calculated.
This path should be used to resolve file patterns or to convert
canonical paths back to file paths for display. It shouldn't be
used to get real file paths. Use vfs functions instead.
"""
def get_entry(path):
"""return a DirstateItem for the associated path"""
def pathto(f, cwd=None):
pass
def __contains__(key):
"""Check if bytestring `key` is known to the dirstate."""
def __iter__():
"""Iterate the dirstate's contained filenames as bytestrings."""
def items():
"""Iterate the dirstate's entries as (filename, DirstateItem.
As usual, filename is a bytestring.
"""
iteritems = items
def parents():
pass
def p1():
pass
def p2():
pass
def branch():
pass
def setparents(p1, p2=None):
"""Set dirstate parents to p1 and p2.
When moving from two parents to one, 'm' merged entries a
adjusted to normal and previous copy records discarded and
returned by the call.
See localrepo.setparents()
"""
def setbranch(branch):
pass
def invalidate():
"""Causes the next access to reread the dirstate.
This is different from localrepo.invalidatedirstate() because it always
rereads the dirstate. Use localrepo.invalidatedirstate() if you want to
check whether the dirstate has changed before rereading it."""
def copy(source, dest):
"""Mark dest as a copy of source. Unmark dest if source is None."""
def copied(file):
pass
def copies():
pass
def normalize(path, isknown=False, ignoremissing=False):
"""
normalize the case of a pathname when on a casefolding filesystem
isknown specifies whether the filename came from walking the
disk, to avoid extra filesystem access.
If ignoremissing is True, missing path are returned
unchanged. Otherwise, we try harder to normalize possibly
existing path components.
The normalized case is determined based on the following precedence:
- version of name already stored in the dirstate
- version of name stored on disk
- version provided via command arguments
"""
def clear():
pass
def rebuild(parent, allfiles, changedfiles=None):
pass
def identity():
"""Return identity of dirstate it to detect changing in storage
If identity of previous dirstate is equal to this, writing
changes based on the former dirstate out can keep consistency.
"""
def write(tr):
pass
def addparentchangecallback(category, callback):
"""add a callback to be called when the wd parents are changed
Callback will be called with the following arguments:
dirstate, (oldp1, oldp2), (newp1, newp2)
Category is a unique identifier to allow overwriting an old callback
with a newer callback.
"""
def walk(match, subrepos, unknown, ignored, full=True):
"""
Walk recursively through the directory tree, finding all files
matched by match.
If full is False, maybe skip some known-clean files.
Return a dict mapping filename to stat-like object (either
mercurial.osutil.stat instance or return value of os.stat()).
"""
def status(match, subrepos, ignored, clean, unknown):
"""Determine the status of the working copy relative to the
dirstate and return a pair of (unsure, status), where status is of type
scmutil.status and:
unsure:
files that might have been modified since the dirstate was
written, but need to be read to be sure (size is the same
but mtime differs)
status.modified:
files that have definitely been modified since the dirstate
was written (different size or mode)
status.clean:
files that have definitely not been modified since the
dirstate was written
"""
def matches(match):
"""
return files in the dirstate (in whatever state) filtered by match
"""
def savebackup(tr, backupname):
'''Save current dirstate into backup file'''
def restorebackup(tr, backupname):
'''Restore dirstate by backup file'''
def clearbackup(tr, backupname):
'''Clear backup file'''