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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]
- 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. For example, if you have
merged "release-1.0" into "trunk", then you should specify the revision on
"trunk" as the first parent and the one on the "release-1.0" branch as the
second.
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.
The options shown are the defaults.
--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.
--config hook.cvslog
Specify a Python function to be called at the end of gathering the CVS
log. The function is passed a list with the log entries, and can
modify the entries in-place, or add or delete them.
--config hook.cvschangesets
Specify a Python function to be called after the changesets are
calculated from the the CVS log. The function is passed a list with
the changeset entries, and can modify the changesets in-place, or add
or delete them.
An additional "debugcvsps" Mercurial command 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. Please see the command help for
more details.
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
options:
-A --authors FILE username mapping filename
-d --dest-type TYPE destination repository type
--filemap FILE remap file names using contents of file
-r --rev REV import up to target revision REV
-s --source-type TYPE source repository type
--splicemap FILE splice synthesized history into place
--branchmap FILE change branch names while converting
--branchsort try to sort changesets by branches
--datesort try to sort changesets by date
--sourcesort preserve source changesets order
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
% converting empty dir should fail nicely
assuming destination emptydir-hg
initializing destination emptydir-hg repository
emptydir does not look like a CVS checkout
emptydir does not look like a Git repository
emptydir does not look like a Subversion repository
emptydir is not a local Mercurial repository
emptydir does not look like a darcs repository
emptydir does not look like a monotone repository
emptydir does not look like a GNU Arch repository
emptydir does not look like a Bazaar repository
cannot find required "p4" tool
abort: emptydir: missing or unsupported repository
% convert with imaginary source type
initializing destination a-foo repository
abort: foo: invalid source repository type
% convert with imaginary sink type
abort: foo: invalid destination repository type
% testing: convert must not produce duplicate entries in fncache
initializing destination b repository
scanning source...
sorting...
converting...
4 a
3 b
2 c
1 d
0 e
% contents of fncache file:
data/a.i
data/b.i
% test bogus URL
abort: bzr+ssh://foobar@selenic.com/baz: missing or unsupported repository