mercurial/commit.py
author Pierre-Yves David <pierre-yves.david@octobus.net>
Sat, 25 Jul 2020 14:59:55 +0200
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parent 45273 e15416c95b25
child 45275 b3040b6739ce
permissions -rw-r--r--
commitctx: create the new extra dict on its own line A trivial move to make the next changeset easier to read.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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# commit.py - fonction to perform commit
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from __future__ import absolute_import
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import errno
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from .i18n import _
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from .node import (
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    hex,
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    nullid,
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    nullrev,
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)
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from . import (
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    context,
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    mergestate,
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    metadata,
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    phases,
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    scmutil,
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    subrepoutil,
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)
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def _write_copy_meta(repo):
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    """return a (changelog, filelog) boolean tuple
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    changelog: copy related information should be stored in the changeset
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    filelof:   copy related information should be written in the file revision
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    """
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    if repo.filecopiesmode == b'changeset-sidedata':
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        writechangesetcopy = True
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        writefilecopymeta = True
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    else:
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        writecopiesto = repo.ui.config(b'experimental', b'copies.write-to')
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        writefilecopymeta = writecopiesto != b'changeset-only'
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        writechangesetcopy = writecopiesto in (
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            b'changeset-only',
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            b'compatibility',
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        )
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    return writechangesetcopy, writefilecopymeta
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def commitctx(repo, ctx, error=False, origctx=None):
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    """Add a new revision to the target repository.
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    Revision information is passed via the context argument.
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    ctx.files() should list all files involved in this commit, i.e.
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    modified/added/removed files. On merge, it may be wider than the
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    ctx.files() to be committed, since any file nodes derived directly
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    from p1 or p2 are excluded from the committed ctx.files().
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    origctx is for convert to work around the problem that bug
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    fixes to the files list in changesets change hashes. For
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    convert to be the identity, it can pass an origctx and this
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    function will use the same files list when it makes sense to
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    do so.
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    """
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    repo = repo.unfiltered()
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    p1, p2 = ctx.p1(), ctx.p2()
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    user = ctx.user()
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    with repo.lock(), repo.transaction(b"commit") as tr:
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        r = _prepare_files(tr, ctx, error=error, origctx=origctx)
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        mn, files, p1copies, p2copies, filesadded, filesremoved = r
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        extra = ctx.extra().copy()
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        # update changelog
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        repo.ui.note(_(b"committing changelog\n"))
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        repo.changelog.delayupdate(tr)
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        n = repo.changelog.add(
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            mn,
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            files,
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            ctx.description(),
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            tr,
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            p1.node(),
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            p2.node(),
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            user,
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            ctx.date(),
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            extra,
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            p1copies,
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            p2copies,
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            filesadded,
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            filesremoved,
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        )
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        xp1, xp2 = p1.hex(), p2 and p2.hex() or b''
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        repo.hook(
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            b'pretxncommit', throw=True, node=hex(n), parent1=xp1, parent2=xp2,
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        )
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        # set the new commit is proper phase
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        targetphase = subrepoutil.newcommitphase(repo.ui, ctx)
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        if targetphase:
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            # retract boundary do not alter parent changeset.
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            # if a parent have higher the resulting phase will
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            # be compliant anyway
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            #
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            # if minimal phase was 0 we don't need to retract anything
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            phases.registernew(repo, tr, targetphase, [n])
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        return n
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def _prepare_files(tr, ctx, error=False, origctx=None):
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    repo = ctx.repo()
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    p1 = ctx.p1()
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    writechangesetcopy, writefilecopymeta = _write_copy_meta(repo)
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    p1copies, p2copies = None, None
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    if writechangesetcopy:
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        p1copies = ctx.p1copies()
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        p2copies = ctx.p2copies()
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    filesadded, filesremoved = None, None
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    if ctx.manifestnode():
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        # reuse an existing manifest revision
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        repo.ui.debug(b'reusing known manifest\n')
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        mn = ctx.manifestnode()
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        files = ctx.files()
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        if writechangesetcopy:
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            filesadded = ctx.filesadded()
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            filesremoved = ctx.filesremoved()
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    elif not ctx.files():
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        repo.ui.debug(b'reusing manifest from p1 (no file change)\n')
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        mn = p1.manifestnode()
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        files = []
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    else:
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        mn, files, added, removed = _process_files(tr, ctx, error=error)
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        if writechangesetcopy:
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            filesremoved = removed
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            filesadded = added
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    if origctx and origctx.manifestnode() == mn:
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        files = origctx.files()
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   137
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    if not writefilecopymeta:
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        # If writing only to changeset extras, use None to indicate that
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        # no entry should be written. If writing to both, write an empty
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        # entry to prevent the reader from falling back to reading
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        # filelogs.
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        p1copies = p1copies or None
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        p2copies = p2copies or None
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        filesadded = filesadded or None
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        filesremoved = filesremoved or None
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    return mn, files, p1copies, p2copies, filesadded, filesremoved
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def _process_files(tr, ctx, error=False):
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    repo = ctx.repo()
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    p1 = ctx.p1()
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    p2 = ctx.p2()
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    writechangesetcopy, writefilecopymeta = _write_copy_meta(repo)
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    m1ctx = p1.manifestctx()
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    m2ctx = p2.manifestctx()
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    mctx = m1ctx.copy()
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    m = mctx.read()
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    m1 = m1ctx.read()
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    m2 = m2ctx.read()
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    # check in files
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    added = []
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    filesadded = []
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    removed = list(ctx.removed())
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    touched = []
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    linkrev = len(repo)
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    repo.ui.note(_(b"committing files:\n"))
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    uipathfn = scmutil.getuipathfn(repo)
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    for f in sorted(ctx.modified() + ctx.added()):
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        repo.ui.note(uipathfn(f) + b"\n")
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        try:
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            fctx = ctx[f]
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            if fctx is None:
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                removed.append(f)
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            else:
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                added.append(f)
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                m[f], is_touched = _filecommit(
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                    repo, fctx, m1, m2, linkrev, tr, writefilecopymeta,
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                )
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                if is_touched:
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                    touched.append(f)
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                    if is_touched == 'added':
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                        filesadded.append(f)
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                m.setflag(f, fctx.flags())
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        except OSError:
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            repo.ui.warn(_(b"trouble committing %s!\n") % uipathfn(f))
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            raise
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        except IOError as inst:
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            errcode = getattr(inst, 'errno', errno.ENOENT)
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            if error or errcode and errcode != errno.ENOENT:
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                repo.ui.warn(_(b"trouble committing %s!\n") % uipathfn(f))
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            raise
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    # update manifest
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    removed = [f for f in removed if f in m1 or f in m2]
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    drop = sorted([f for f in removed if f in m])
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    for f in drop:
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        del m[f]
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    if p2.rev() != nullrev:
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        rf = metadata.get_removal_filter(ctx, (p1, p2, m1, m2))
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        removed = [f for f in removed if not rf(f)]
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    touched.extend(removed)
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    files = touched
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    mn = _commit_manifest(tr, linkrev, ctx, mctx, m, files, added, drop)
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    return mn, files, filesadded, removed
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45240
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def _filecommit(
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    repo, fctx, manifest1, manifest2, linkrev, tr, includecopymeta,
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):
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    """
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    commit an individual file as part of a larger transaction
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   221
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   222
    input:
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   223
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        fctx:       a file context with the content we are trying to commit
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        manifest1:  manifest of changeset first parent
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        manifest2:  manifest of changeset second parent
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        linkrev:    revision number of the changeset being created
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        tr:         current transation
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        individual: boolean, set to False to skip storing the copy data
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                    (only used by the Google specific feature of using
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                    changeset extra as copy source of truth).
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    output: (filenode, touched)
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   234
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   235
        filenode: the filenode that should be used by this changeset
45256
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        touched:  one of: None (mean untouched), 'added' or 'modified'
45240
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   237
    """
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   238
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   239
    fname = fctx.path()
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   240
    fparent1 = manifest1.get(fname, nullid)
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   241
    fparent2 = manifest2.get(fname, nullid)
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   242
    touched = None
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   243
    if fparent1 == fparent2 == nullid:
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   244
        touched = 'added'
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   245
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   246
    if isinstance(fctx, context.filectx):
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   247
        # This block fast path most comparisons which are usually done. It
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   248
        # assumes that bare filectx is used and no merge happened, hence no
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   249
        # need to create a new file revision in this case.
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   250
        node = fctx.filenode()
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   251
        if node in [fparent1, fparent2]:
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   252
            repo.ui.debug(b'reusing %s filelog entry\n' % fname)
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   253
            if (
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   254
                fparent1 != nullid and manifest1.flags(fname) != fctx.flags()
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   255
            ) or (
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   256
                fparent2 != nullid and manifest2.flags(fname) != fctx.flags()
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   257
            ):
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   258
                touched = 'modified'
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   259
            return node, touched
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   260
ce9ee81df9ff commitctx: extract _filecommit too
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   261
    flog = repo.file(fname)
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   262
    meta = {}
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   263
    cfname = fctx.copysource()
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   264
    fnode = None
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   265
ce9ee81df9ff commitctx: extract _filecommit too
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   266
    if cfname and cfname != fname:
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   267
        # Mark the new revision of this file as a copy of another
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   268
        # file.  This copy data will effectively act as a parent
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   269
        # of this new revision.  If this is a merge, the first
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   270
        # parent will be the nullid (meaning "look up the copy data")
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   271
        # and the second one will be the other parent.  For example:
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   272
        #
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   273
        # 0 --- 1 --- 3   rev1 changes file foo
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   274
        #   \       /     rev2 renames foo to bar and changes it
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   275
        #    \- 2 -/      rev3 should have bar with all changes and
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   276
        #                      should record that bar descends from
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   277
        #                      bar in rev2 and foo in rev1
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   278
        #
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        # this allows this merge to succeed:
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   280
        #
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   281
        # 0 --- 1 --- 3   rev4 reverts the content change from rev2
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   282
        #   \       /     merging rev3 and rev4 should use bar@rev2
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   283
        #    \- 2 --- 4        as the merge base
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   284
        #
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   285
ce9ee81df9ff commitctx: extract _filecommit too
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   286
        cnode = manifest1.get(cfname)
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   287
        newfparent = fparent2
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diff changeset
   288
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   289
        if manifest2:  # branch merge
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   290
            if fparent2 == nullid or cnode is None:  # copied on remote side
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diff changeset
   291
                if cfname in manifest2:
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   292
                    cnode = manifest2[cfname]
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   293
                    newfparent = fparent1
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diff changeset
   294
ce9ee81df9ff commitctx: extract _filecommit too
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   295
        # Here, we used to search backwards through history to try to find
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   296
        # where the file copy came from if the source of a copy was not in
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diff changeset
   297
        # the parent directory. However, this doesn't actually make sense to
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diff changeset
   298
        # do (what does a copy from something not in your working copy even
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diff changeset
   299
        # mean?) and it causes bugs (eg, issue4476). Instead, we will warn
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diff changeset
   300
        # the user that copy information was dropped, so if they didn't
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diff changeset
   301
        # expect this outcome it can be fixed, but this is the correct
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diff changeset
   302
        # behavior in this circumstance.
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diff changeset
   303
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   304
        if cnode:
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diff changeset
   305
            repo.ui.debug(b" %s: copy %s:%s\n" % (fname, cfname, hex(cnode)))
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diff changeset
   306
            if includecopymeta:
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   307
                meta[b"copy"] = cfname
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diff changeset
   308
                meta[b"copyrev"] = hex(cnode)
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diff changeset
   309
            fparent1, fparent2 = nullid, newfparent
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diff changeset
   310
        else:
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diff changeset
   311
            repo.ui.warn(
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   312
                _(
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diff changeset
   313
                    b"warning: can't find ancestor for '%s' "
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   314
                    b"copied from '%s'!\n"
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   315
                )
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   316
                % (fname, cfname)
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diff changeset
   317
            )
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   318
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   319
    elif fparent1 == nullid:
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diff changeset
   320
        fparent1, fparent2 = fparent2, nullid
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diff changeset
   321
    elif fparent2 != nullid:
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diff changeset
   322
        # is one parent an ancestor of the other?
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diff changeset
   323
        fparentancestors = flog.commonancestorsheads(fparent1, fparent2)
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   324
        if fparent1 in fparentancestors:
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diff changeset
   325
            fparent1, fparent2 = fparent2, nullid
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   326
        elif fparent2 in fparentancestors:
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   327
            fparent2 = nullid
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   328
        elif not fparentancestors:
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   329
            # TODO: this whole if-else might be simplified much more
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   330
            ms = mergestate.mergestate.read(repo)
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   331
            if (
ce9ee81df9ff commitctx: extract _filecommit too
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   332
                fname in ms
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diff changeset
   333
                and ms[fname] == mergestate.MERGE_RECORD_MERGED_OTHER
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   334
            ):
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   335
                fparent1, fparent2 = fparent2, nullid
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   336
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   337
    # is the file changed?
ce9ee81df9ff commitctx: extract _filecommit too
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parents: 45239
diff changeset
   338
    text = fctx.data()
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   339
    if fparent2 != nullid or meta or flog.cmp(fparent1, text):
ce9ee81df9ff commitctx: extract _filecommit too
Pierre-Yves David <pierre-yves.david@octobus.net>
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diff changeset
   340
        if touched is None:  # do not overwrite added
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   341
            touched = 'modified'
ce9ee81df9ff commitctx: extract _filecommit too
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diff changeset
   342
        fnode = flog.add(text, meta, tr, linkrev, fparent1, fparent2)
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diff changeset
   343
    # are just the flags changed during merge?
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diff changeset
   344
    elif fname in manifest1 and manifest1.flags(fname) != fctx.flags():
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   345
        touched = 'modified'
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diff changeset
   346
        fnode = fparent1
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diff changeset
   347
    else:
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diff changeset
   348
        fnode = fparent1
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diff changeset
   349
    return fnode, touched
45258
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 45257
diff changeset
   350
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
Pierre-Yves David <pierre-yves.david@octobus.net>
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diff changeset
   351
45273
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Pierre-Yves David <pierre-yves.david@octobus.net>
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diff changeset
   352
def _commit_manifest(tr, linkrev, ctx, mctx, manifest, files, added, drop):
45258
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   353
    """make a new manifest entry (or reuse a new one)
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   354
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   355
    given an initialised manifest context and precomputed list of
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   356
    - files: files affected by the commit
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   357
    - added: new entries in the manifest
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   358
    - drop:  entries present in parents but absent of this one
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diff changeset
   359
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   360
    Create a new manifest revision, reuse existing ones if possible.
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diff changeset
   361
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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   362
    Return the nodeid of the manifest revision.
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   363
    """
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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diff changeset
   364
    repo = ctx.repo()
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diff changeset
   365
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   366
    md = None
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   367
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   368
    # all this is cached, so it is find to get them all from the ctx.
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   369
    p1 = ctx.p1()
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   370
    p2 = ctx.p2()
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   371
    m1ctx = p1.manifestctx()
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diff changeset
   372
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   373
    m1 = m1ctx.read()
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diff changeset
   374
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   375
    if not files:
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   376
        # if no "files" actually changed in terms of the changelog,
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parents: 45257
diff changeset
   377
        # try hard to detect unmodified manifest entry so that the
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   378
        # exact same commit can be reproduced later on convert.
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   379
        md = m1.diff(manifest, scmutil.matchfiles(repo, ctx.files()))
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parents: 45257
diff changeset
   380
    if not files and md:
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parents: 45257
diff changeset
   381
        repo.ui.debug(
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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parents: 45257
diff changeset
   382
            b'not reusing manifest (no file change in '
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parents: 45257
diff changeset
   383
            b'changelog, but manifest differs)\n'
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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parents: 45257
diff changeset
   384
        )
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parents: 45257
diff changeset
   385
    if files or md:
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 45257
diff changeset
   386
        repo.ui.note(_(b"committing manifest\n"))
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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parents: 45257
diff changeset
   387
        # we're using narrowmatch here since it's already applied at
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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parents: 45257
diff changeset
   388
        # other stages (such as dirstate.walk), so we're already
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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parents: 45257
diff changeset
   389
        # ignoring things outside of narrowspec in most cases. The
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parents: 45257
diff changeset
   390
        # one case where we might have files outside the narrowspec
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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parents: 45257
diff changeset
   391
        # at this point is merges, and we already error out in the
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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parents: 45257
diff changeset
   392
        # case where the merge has files outside of the narrowspec,
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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diff changeset
   393
        # so this is safe.
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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parents: 45257
diff changeset
   394
        mn = mctx.write(
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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parents: 45257
diff changeset
   395
            tr,
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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parents: 45257
diff changeset
   396
            linkrev,
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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parents: 45257
diff changeset
   397
            p1.manifestnode(),
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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parents: 45257
diff changeset
   398
            p2.manifestnode(),
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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parents: 45257
diff changeset
   399
            added,
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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diff changeset
   400
            drop,
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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parents: 45257
diff changeset
   401
            match=repo.narrowmatch(),
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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parents: 45257
diff changeset
   402
        )
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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parents: 45257
diff changeset
   403
    else:
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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parents: 45257
diff changeset
   404
        repo.ui.debug(
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 45257
diff changeset
   405
            b'reusing manifest from p1 (listed files ' b'actually unchanged)\n'
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 45257
diff changeset
   406
        )
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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parents: 45257
diff changeset
   407
        mn = p1.manifestnode()
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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parents: 45257
diff changeset
   408
f0d4d1343cb4 commitctx: extract the function that commit a new manifest
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diff changeset
   409
    return mn