ref: 0803fab7c33f0ea21405ae1ff8b11f62bba73bca
dir: /sys/src/cmd/hg/hgext/convert/__init__.py/
# convert.py Foreign SCM converter
#
# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2, incorporated herein by reference.
'''import revisions from foreign VCS repositories into Mercurial'''
import convcmd
import cvsps
import subversion
from mercurial import commands
from mercurial.i18n import _
# Commands definition was moved elsewhere to ease demandload job.
def convert(ui, src, dest=None, revmapfile=None, **opts):
"""convert a foreign SCM repository to a Mercurial one.
Accepted source formats [identifiers]:
- Mercurial [hg]
- CVS [cvs]
- Darcs [darcs]
- git [git]
- Subversion [svn]
- Monotone [mtn]
- GNU Arch [gnuarch]
- Bazaar [bzr]
- Perforce [p4]
Accepted destination formats [identifiers]:
- Mercurial [hg]
- Subversion [svn] (history on branches is not preserved)
If no revision is given, all revisions will be converted.
Otherwise, convert will only import up to the named revision
(given in a format understood by the source).
If no destination directory name is specified, it defaults to the
basename of the source with '-hg' appended. If the destination
repository doesn't exist, it will be created.
By default, all sources except Mercurial will use --branchsort.
Mercurial uses --sourcesort to preserve original revision numbers
order. Sort modes have the following effects:
--branchsort convert from parent to child revision when possible,
which means branches are usually converted one after
the other. It generates more compact repositories.
--datesort sort revisions by date. Converted repositories have
good-looking changelogs but are often an order of
magnitude larger than the same ones generated by
--branchsort.
--sourcesort try to preserve source revisions order, only
supported by Mercurial sources.
If <REVMAP> isn't given, it will be put in a default location
(<dest>/.hg/shamap by default). The <REVMAP> is a simple text file
that maps each source commit ID to the destination ID for that
revision, like so::
<source ID> <destination ID>
If the file doesn't exist, it's automatically created. It's
updated on each commit copied, so convert-repo can be interrupted
and can be run repeatedly to copy new commits.
The [username mapping] file is a simple text file that maps each
source commit author to a destination commit author. It is handy
for source SCMs that use unix logins to identify authors (eg:
CVS). One line per author mapping and the line format is:
srcauthor=whatever string you want
The filemap is a file that allows filtering and remapping of files
and directories. Comment lines start with '#'. Each line can
contain one of the following directives::
include path/to/file
exclude path/to/file
rename from/file to/file
The 'include' directive causes a file, or all files under a
directory, to be included in the destination repository, and the
exclusion of all other files and directories not explicitly
included. The 'exclude' directive causes files or directories to
be omitted. The 'rename' directive renames a file or directory. To
rename from a subdirectory into the root of the repository, use
'.' as the path to rename to.
The splicemap is a file that allows insertion of synthetic
history, letting you specify the parents of a revision. This is
useful if you want to e.g. give a Subversion merge two parents, or
graft two disconnected series of history together. Each entry
contains a key, followed by a space, followed by one or two
comma-separated values. The key is the revision ID in the source
revision control system whose parents should be modified (same
format as a key in .hg/shamap). The values are the revision IDs
(in either the source or destination revision control system) that
should be used as the new parents for that node.
The branchmap is a file that allows you to rename a branch when it is
being brought in from whatever external repository. When used in
conjunction with a splicemap, it allows for a powerful combination
to help fix even the most badly mismanaged repositories and turn them
into nicely structured Mercurial repositories. The branchmap contains
lines of the form "original_branch_name new_branch_name".
"original_branch_name" is the name of the branch in the source
repository, and "new_branch_name" is the name of the branch is the
destination repository. This can be used to (for instance) move code
in one repository from "default" to a named branch.
Mercurial Source
----------------
--config convert.hg.ignoreerrors=False (boolean)
ignore integrity errors when reading. Use it to fix Mercurial
repositories with missing revlogs, by converting from and to
Mercurial.
--config convert.hg.saverev=False (boolean)
store original revision ID in changeset (forces target IDs to
change)
--config convert.hg.startrev=0 (hg revision identifier)
convert start revision and its descendants
CVS Source
----------
CVS source will use a sandbox (i.e. a checked-out copy) from CVS
to indicate the starting point of what will be converted. Direct
access to the repository files is not needed, unless of course the
repository is :local:. The conversion uses the top level directory
in the sandbox to find the CVS repository, and then uses CVS rlog
commands to find files to convert. This means that unless a
filemap is given, all files under the starting directory will be
converted, and that any directory reorganization in the CVS
sandbox is ignored.
Because CVS does not have changesets, it is necessary to collect
individual commits to CVS and merge them into changesets. CVS
source uses its internal changeset merging code by default but can
be configured to call the external 'cvsps' program by setting::
--config convert.cvsps='cvsps -A -u --cvs-direct -q'
This option is deprecated and will be removed in Mercurial 1.4.
The options shown are the defaults.
Internal cvsps is selected by setting ::
--config convert.cvsps=builtin
and has a few more configurable options:
--config convert.cvsps.cache=True (boolean)
Set to False to disable remote log caching, for testing and
debugging purposes.
--config convert.cvsps.fuzz=60 (integer)
Specify the maximum time (in seconds) that is allowed between
commits with identical user and log message in a single
changeset. When very large files were checked in as part of a
changeset then the default may not be long enough.
--config convert.cvsps.mergeto='{{mergetobranch ([-\\w]+)}}'
Specify a regular expression to which commit log messages are
matched. If a match occurs, then the conversion process will
insert a dummy revision merging the branch on which this log
message occurs to the branch indicated in the regex.
--config convert.cvsps.mergefrom='{{mergefrombranch ([-\\w]+)}}'
Specify a regular expression to which commit log messages are
matched. If a match occurs, then the conversion process will
add the most recent revision on the branch indicated in the
regex as the second parent of the changeset.
The hgext/convert/cvsps wrapper script allows the builtin
changeset merging code to be run without doing a conversion. Its
parameters and output are similar to that of cvsps 2.1.
Subversion Source
-----------------
Subversion source detects classical trunk/branches/tags layouts.
By default, the supplied "svn://repo/path/" source URL is
converted as a single branch. If "svn://repo/path/trunk" exists it
replaces the default branch. If "svn://repo/path/branches" exists,
its subdirectories are listed as possible branches. If
"svn://repo/path/tags" exists, it is looked for tags referencing
converted branches. Default "trunk", "branches" and "tags" values
can be overridden with following options. Set them to paths
relative to the source URL, or leave them blank to disable auto
detection.
--config convert.svn.branches=branches (directory name)
specify the directory containing branches
--config convert.svn.tags=tags (directory name)
specify the directory containing tags
--config convert.svn.trunk=trunk (directory name)
specify the name of the trunk branch
Source history can be retrieved starting at a specific revision,
instead of being integrally converted. Only single branch
conversions are supported.
--config convert.svn.startrev=0 (svn revision number)
specify start Subversion revision.
Perforce Source
---------------
The Perforce (P4) importer can be given a p4 depot path or a
client specification as source. It will convert all files in the
source to a flat Mercurial repository, ignoring labels, branches
and integrations. Note that when a depot path is given you then
usually should specify a target directory, because otherwise the
target may be named ...-hg.
It is possible to limit the amount of source history to be
converted by specifying an initial Perforce revision.
--config convert.p4.startrev=0 (perforce changelist number)
specify initial Perforce revision.
Mercurial Destination
---------------------
--config convert.hg.clonebranches=False (boolean)
dispatch source branches in separate clones.
--config convert.hg.tagsbranch=default (branch name)
tag revisions branch name
--config convert.hg.usebranchnames=True (boolean)
preserve branch names
"""
return convcmd.convert(ui, src, dest, revmapfile, **opts)
def debugsvnlog(ui, **opts):
return subversion.debugsvnlog(ui, **opts)
def debugcvsps(ui, *args, **opts):
'''create changeset information from CVS
This command is intended as a debugging tool for the CVS to
Mercurial converter, and can be used as a direct replacement for
cvsps.
Hg debugcvsps reads the CVS rlog for current directory (or any
named directory) in the CVS repository, and converts the log to a
series of changesets based on matching commit log entries and
dates.'''
return cvsps.debugcvsps(ui, *args, **opts)
commands.norepo += " convert debugsvnlog debugcvsps"
cmdtable = {
"convert":
(convert,
[('A', 'authors', '', _('username mapping filename')),
('d', 'dest-type', '', _('destination repository type')),
('', 'filemap', '', _('remap file names using contents of file')),
('r', 'rev', '', _('import up to target revision REV')),
('s', 'source-type', '', _('source repository type')),
('', 'splicemap', '', _('splice synthesized history into place')),
('', 'branchmap', '', _('change branch names while converting')),
('', 'branchsort', None, _('try to sort changesets by branches')),
('', 'datesort', None, _('try to sort changesets by date')),
('', 'sourcesort', None, _('preserve source changesets order'))],
_('hg convert [OPTION]... SOURCE [DEST [REVMAP]]')),
"debugsvnlog":
(debugsvnlog,
[],
'hg debugsvnlog'),
"debugcvsps":
(debugcvsps,
[
# Main options shared with cvsps-2.1
('b', 'branches', [], _('only return changes on specified branches')),
('p', 'prefix', '', _('prefix to remove from file names')),
('r', 'revisions', [], _('only return changes after or between specified tags')),
('u', 'update-cache', None, _("update cvs log cache")),
('x', 'new-cache', None, _("create new cvs log cache")),
('z', 'fuzz', 60, _('set commit time fuzz in seconds')),
('', 'root', '', _('specify cvsroot')),
# Options specific to builtin cvsps
('', 'parents', '', _('show parent changesets')),
('', 'ancestors', '', _('show current changeset in ancestor branches')),
# Options that are ignored for compatibility with cvsps-2.1
('A', 'cvs-direct', None, _('ignored for compatibility')),
],
_('hg debugcvsps [OPTION]... [PATH]...')),
}