спасите свои данные из другого SCM, которого люди любят ненавидеть (Salvage your data out of another SCM people love to hate)
Имя (Name)
git-cvsimport - Salvage your data out of another SCM people love
to hate
Синопсис (Synopsis)
git cvsimport [-o <branch-for-HEAD>] [-h] [-v] [-d <CVSROOT>]
[-A <author-conv-file>] [-p <options-for-cvsps>] [-P <file>]
[-C <git_repository>] [-z <fuzz>] [-i] [-k] [-u] [-s <subst>]
[-a] [-m] [-M <regex>] [-S <regex>] [-L <commitlimit>]
[-r <remote>] [-R] [<CVS_module>]
Описание (Description)
WARNING: git cvsimport uses cvsps version 2, which is considered
deprecated; it does not work with cvsps version 3 and later. If
you are performing a one-shot import of a CVS repository consider
using cvs2gitcvs-fast-export
Imports a CVS repository into Git. It will either create a new
repository, or incrementally import into an existing one.
Splitting the CVS log into patch sets is done by cvsps. At least
version 2.1 is required.
WARNING: for certain situations the import leads to incorrect
results. Please see the section ISSUES for further reference.
You should never do any work of your own on the branches that are
created by git cvsimport. By default initial import will create
and populate a "master" branch from the CVS repository's main
branch which you're free to work with; after that, you need to
git merge incremental imports, or any CVS branches, yourself. It
is advisable to specify a named remote via -r to separate and
protect the incoming branches.
If you intend to set up a shared public repository that all
developers can read/write, or if you want to use
git-cvsserver(1), then you probably want to make a bare clone of
the imported repository, and use the clone as the shared
repository. See gitcvs-migration(7).
Параметры (Options)
-v
Verbosity: let cvsimport report what it is doing.
-d <CVSROOT>
The root of the CVS archive. May be local (a simple path) or
remote; currently, only the :local:, :ext: and :pserver:
access methods are supported. If not given, git cvsimport
will try to read it from CVS/Root. If no such file exists, it
checks for the CVSROOT environment variable.
<CVS_module>
The CVS module you want to import. Relative to <CVSROOT>. If
not given, git cvsimport tries to read it from
CVS/Repository.
-C <target-dir>
The Git repository to import to. If the directory doesn't
exist, it will be created. Default is the current directory.
-r <remote>
The Git remote to import this CVS repository into. Moves all
CVS branches into remotes/<remote>/<branch> akin to the way
git clone uses origin by default.
-o <branch-for-HEAD>
When no remote is specified (via -r) the HEAD branch from CVS
is imported to the origin branch within the Git repository,
as HEAD already has a special meaning for Git. When a remote
is specified the HEAD branch is named remotes/<remote>/master
mirroring git clone behaviour. Use this option if you want to
import into a different branch.
Use -o master for continuing an import that was initially
done by the old cvs2git tool.
-i
Import-only: don't perform a checkout after importing. This
option ensures the working directory and index remain
untouched and will not create them if they do not exist.
-k
Kill keywords: will extract files with -kk from the CVS
archive to avoid noisy changesets. Highly recommended, but
off by default to preserve compatibility with early imported
trees.
-u
Convert underscores in tag and branch names to dots.
-s <subst>
Substitute the character "/" in branch names with <subst>
-p <options-for-cvsps>
Additional options for cvsps. The options -u and -A are
implicit and should not be used here.
If you need to pass multiple options, separate them with a
comma.
-z <fuzz>
Pass the timestamp fuzz factor to cvsps, in seconds. If
unset, cvsps defaults to 300s.
-P <cvsps-output-file>
Instead of calling cvsps, read the provided cvsps output
file. Useful for debugging or when cvsps is being handled
outside cvsimport.
-m
Attempt to detect merges based on the commit message. This
option will enable default regexes that try to capture the
source branch name from the commit message.
-M <regex>
Attempt to detect merges based on the commit message with a
custom regex. It can be used with -m to enable the default
regexes as well. You must escape forward slashes.
The regex must capture the source branch name in $1.
This option can be used several times to provide several
detection regexes.
-S <regex>
Skip paths matching the regex.
-a
Import all commits, including recent ones. cvsimport by
default skips commits that have a timestamp less than 10
minutes ago.
-L <limit>
Limit the number of commits imported. Workaround for cases
where cvsimport leaks memory.
-A <author-conv-file>
CVS by default uses the Unix username when writing its commit
logs. Using this option and an author-conv-file maps the name
recorded in CVS to author name, e-mail and optional time
zone:
exon=Andreas Ericsson <ae@op5.se>
spawn=Simon Pawn <spawn@frog-pond.org> America/Chicago
git cvsimport will make it appear as those authors had their
GIT_AUTHOR_NAME and GIT_AUTHOR_EMAIL set properly all along.
If a time zone is specified, GIT_AUTHOR_DATE will have the
corresponding offset applied.
For convenience, this data is saved to $GIT_DIR/cvs-authors
each time the -A option is provided and read from that same
file each time git cvsimport is run.
It is not recommended to use this feature if you intend to
export changes back to CVS again later with git
cvsexportcommit.
-R
Generate a $GIT_DIR/cvs-revisions file containing a mapping
from CVS revision numbers to newly-created Git commit IDs.
The generated file will contain one line for each (filename,
revision) pair imported; each line will look like
src/widget.c 1.1 1d862f173cdc7325b6fa6d2ae1cfd61fd1b512b7
The revision data is appended to the file if it already
exists, for use when doing incremental imports.
This option may be useful if you have CVS revision numbers
stored in commit messages, bug-tracking systems, email
archives, and the like.
-h
Print a short usage message and exit.
Вывод (Output)
If -v is specified, the script reports what it is doing.
Otherwise, success is indicated the Unix way, i.e. by simply
exiting with a zero exit status.
ISSUES
Problems related to timestamps:
• If timestamps of commits in the CVS repository are not stable
enough to be used for ordering commits changes may show up in
the wrong order.
• If any files were ever "cvs import"ed more than once (e.g.,
import of more than one vendor release) the HEAD contains the
wrong content.
• If the timestamp order of different files cross the revision
order within the commit matching time window the order of
commits may be wrong.
Problems related to branches:
• Branches on which no commits have been made are not imported.
• All files from the branching point are added to a branch even
if never added in CVS.
• This applies to files added to the source branch after a
daughter branch was created: if previously no commit was made
on the daughter branch they will erroneously be added to the
daughter branch in git.
Problems related to tags:
• Multiple tags on the same revision are not imported.
If you suspect that any of these issues may apply to the
repository you want to import, consider using cvs2git:
• cvs2git (part of cvs2svn), http://subversion.apache.org/
Примечание (Note)
1. cvs2git
http://cvs2svn.tigris.org/cvs2git.html
2. cvs-fast-export
http://www.catb.org/esr/cvs-fast-export/
