hg convert [OPTION]... SOURCE [DEST [REVMAP]]
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]
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.
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 dirs not explicitely 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
values, separated by spaces. 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.
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=True (boolean)
allow target to preserve source revision ID
--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 reorganisation 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 is a legacy option and may be removed in future.
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.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 overriden with following options. Set them to paths
relative to the source URL, or leave them blank to disable
autodetection.
--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.
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
options:
-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
--datesort try to sort changesets by date
use "hg -v help convert" to show global options
adding a
assuming destination a-hg
initializing destination a-hg repository
scanning source...
sorting...
converting...
4 a
3 b
2 c
1 d
0 e
pulling from ../a
searching for changes
no changes found
% should fail
initializing destination bogusfile repository
abort: cannot create new bundle repository
% should fail
abort: Permission denied: bogusdir
% should succeed
initializing destination bogusdir repository
scanning source...
sorting...
converting...
4 a
3 b
2 c
1 d
0 e
% test pre and post conversion actions
run hg source pre-conversion action
run hg sink pre-conversion action
run hg sink post-conversion action
run hg source post-conversion action