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hg convert [OPTION]... SOURCE [DEST [REVMAP]]
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convert a foreign SCM repository to a Mercurial one.
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Accepted source formats [identifiers]:
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- Mercurial [hg]
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- CVS [cvs]
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- Darcs [darcs]
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- git [git]
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- Subversion [svn]
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- Monotone [mtn]
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- GNU Arch [gnuarch]
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- Bazaar [bzr]
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- Perforce [p4]
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Accepted destination formats [identifiers]:
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- Mercurial [hg]
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- Subversion [svn] (history on branches is not preserved)
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If no revision is given, all revisions will be converted. Otherwise,
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convert will only import up to the named revision (given in a format
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understood by the source).
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If no destination directory name is specified, it defaults to the basename
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of the source with "-hg" appended. If the destination repository doesn't
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exist, it will be created.
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By default, all sources except Mercurial will use --branchsort. Mercurial
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uses --sourcesort to preserve original revision numbers order. Sort modes
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have the following effects:
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--branchsort convert from parent to child revision when possible, which
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means branches are usually converted one after the other. It
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generates more compact repositories.
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--datesort sort revisions by date. Converted repositories have good-
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looking changelogs but are often an order of magnitude
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larger than the same ones generated by --branchsort.
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--sourcesort try to preserve source revisions order, only supported by
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Mercurial sources.
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If <REVMAP> isn't given, it will be put in a default location
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(<dest>/.hg/shamap by default). The <REVMAP> is a simple text file that
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maps each source commit ID to the destination ID for that revision, like
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so:
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<source ID> <destination ID>
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If the file doesn't exist, it's automatically created. It's updated on
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each commit copied, so "hg convert" can be interrupted and can be run
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repeatedly to copy new commits.
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The username mapping file is a simple text file that maps each source
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commit author to a destination commit author. It is handy for source SCMs
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that use unix logins to identify authors (eg: CVS). One line per author
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mapping and the line format is:
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source author = destination author
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Empty lines and lines starting with a "#" are ignored.
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The filemap is a file that allows filtering and remapping of files and
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directories. Each line can contain one of the following directives:
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include path/to/file-or-dir
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exclude path/to/file-or-dir
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rename path/to/source path/to/destination
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Comment lines start with "#". A specified path matches if it equals the
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full relative name of a file or one of its parent directories. The
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"include" or "exclude" directive with the longest matching path applies,
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so line order does not matter.
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The "include" directive causes a file, or all files under a directory, to
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be included in the destination repository, and the exclusion of all other
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files and directories not explicitly included. The "exclude" directive
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causes files or directories to be omitted. The "rename" directive renames
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a file or directory if it is converted. To rename from a subdirectory into
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the root of the repository, use "." as the path to rename to.
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The splicemap is a file that allows insertion of synthetic history,
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letting you specify the parents of a revision. This is useful if you want
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to e.g. give a Subversion merge two parents, or graft two disconnected
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series of history together. Each entry contains a key, followed by a
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space, followed by one or two comma-separated values:
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key parent1, parent2
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The key is the revision ID in the source revision control system whose
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parents should be modified (same format as a key in .hg/shamap). The
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values are the revision IDs (in either the source or destination revision
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control system) that should be used as the new parents for that node. For
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example, if you have merged "release-1.0" into "trunk", then you should
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specify the revision on "trunk" as the first parent and the one on the
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"release-1.0" branch as the second.
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The branchmap is a file that allows you to rename a branch when it is
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being brought in from whatever external repository. When used in
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conjunction with a splicemap, it allows for a powerful combination to help
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fix even the most badly mismanaged repositories and turn them into nicely
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structured Mercurial repositories. The branchmap contains lines of the
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form:
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original_branch_name new_branch_name
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where "original_branch_name" is the name of the branch in the source
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repository, and "new_branch_name" is the name of the branch is the
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destination repository. No whitespace is allowed in the branch names. This
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can be used to (for instance) move code in one repository from "default"
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to a named branch.
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Mercurial Source
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----------------
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--config convert.hg.ignoreerrors=False (boolean)
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ignore integrity errors when reading. Use it to fix Mercurial
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repositories with missing revlogs, by converting from and to
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Mercurial.
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--config convert.hg.saverev=False (boolean)
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store original revision ID in changeset (forces target IDs to change)
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--config convert.hg.startrev=0 (hg revision identifier)
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convert start revision and its descendants
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CVS Source
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----------
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CVS source will use a sandbox (i.e. a checked-out copy) from CVS to
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indicate the starting point of what will be converted. Direct access to
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the repository files is not needed, unless of course the repository is
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:local:. The conversion uses the top level directory in the sandbox to
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find the CVS repository, and then uses CVS rlog commands to find files to
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convert. This means that unless a filemap is given, all files under the
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starting directory will be converted, and that any directory
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reorganization in the CVS sandbox is ignored.
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The options shown are the defaults.
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--config convert.cvsps.cache=True (boolean)
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Set to False to disable remote log caching, for testing and debugging
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purposes.
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--config convert.cvsps.fuzz=60 (integer)
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Specify the maximum time (in seconds) that is allowed between commits
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with identical user and log message in a single changeset. When very
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large files were checked in as part of a changeset then the default
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may not be long enough.
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--config convert.cvsps.mergeto='{{mergetobranch ([-\w]+)}}'
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Specify a regular expression to which commit log messages are matched.
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If a match occurs, then the conversion process will insert a dummy
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revision merging the branch on which this log message occurs to the
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branch indicated in the regex.
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--config convert.cvsps.mergefrom='{{mergefrombranch ([-\w]+)}}'
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Specify a regular expression to which commit log messages are matched.
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If a match occurs, then the conversion process will add the most
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recent revision on the branch indicated in the regex as the second
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parent of the changeset.
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--config hook.cvslog
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Specify a Python function to be called at the end of gathering the CVS
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log. The function is passed a list with the log entries, and can
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modify the entries in-place, or add or delete them.
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--config hook.cvschangesets
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Specify a Python function to be called after the changesets are
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calculated from the the CVS log. The function is passed a list with
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the changeset entries, and can modify the changesets in-place, or add
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or delete them.
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An additional "debugcvsps" Mercurial command allows the builtin changeset
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merging code to be run without doing a conversion. Its parameters and
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output are similar to that of cvsps 2.1. Please see the command help for
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more details.
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Subversion Source
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-----------------
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Subversion source detects classical trunk/branches/tags layouts. By
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default, the supplied "svn://repo/path/" source URL is converted as a
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single branch. If "svn://repo/path/trunk" exists it replaces the default
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branch. If "svn://repo/path/branches" exists, its subdirectories are
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listed as possible branches. If "svn://repo/path/tags" exists, it is
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looked for tags referencing converted branches. Default "trunk",
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"branches" and "tags" values can be overridden with following options. Set
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them to paths relative to the source URL, or leave them blank to disable
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auto detection.
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--config convert.svn.branches=branches (directory name)
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specify the directory containing branches
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--config convert.svn.tags=tags (directory name)
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specify the directory containing tags
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--config convert.svn.trunk=trunk (directory name)
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specify the name of the trunk branch
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Source history can be retrieved starting at a specific revision, instead
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of being integrally converted. Only single branch conversions are
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supported.
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--config convert.svn.startrev=0 (svn revision number)
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specify start Subversion revision.
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Perforce Source
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---------------
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The Perforce (P4) importer can be given a p4 depot path or a client
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specification as source. It will convert all files in the source to a flat
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Mercurial repository, ignoring labels, branches and integrations. Note
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that when a depot path is given you then usually should specify a target
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directory, because otherwise the target may be named ...-hg.
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It is possible to limit the amount of source history to be converted by
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specifying an initial Perforce revision.
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--config convert.p4.startrev=0 (perforce changelist number)
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specify initial Perforce revision.
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Mercurial Destination
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---------------------
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--config convert.hg.clonebranches=False (boolean)
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dispatch source branches in separate clones.
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--config convert.hg.tagsbranch=default (branch name)
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tag revisions branch name
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--config convert.hg.usebranchnames=True (boolean)
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preserve branch names
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options:
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-A --authors FILE username mapping filename
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-s --source-type TYPE source repository type
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-d --dest-type TYPE destination repository type
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-r --rev REV import up to target revision REV
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--filemap FILE remap file names using contents of file
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--splicemap FILE splice synthesized history into place
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--branchmap FILE change branch names while converting
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--branchsort try to sort changesets by branches
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--datesort try to sort changesets by date
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--sourcesort preserve source changesets order
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use "hg -v help convert" to show global options
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adding a
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assuming destination a-hg
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initializing destination a-hg repository
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scanning source...
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sorting...
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converting...
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4 a
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3 b
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2 c
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1 d
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0 e
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pulling from ../a
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searching for changes
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no changes found
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% should fail
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initializing destination bogusfile repository
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abort: cannot create new bundle repository
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% should fail
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abort: Permission denied: bogusdir
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% should succeed
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initializing destination bogusdir repository
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scanning source...
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sorting...
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converting...
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4 a
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3 b
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2 c
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1 d
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0 e
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% test pre and post conversion actions
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run hg source pre-conversion action
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run hg sink pre-conversion action
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run hg sink post-conversion action
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run hg source post-conversion action
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% converting empty dir should fail nicely
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assuming destination emptydir-hg
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initializing destination emptydir-hg repository
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emptydir does not look like a CVS checkout
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emptydir does not look like a Git repository
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emptydir does not look like a Subversion repository
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emptydir is not a local Mercurial repository
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emptydir does not look like a darcs repository
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emptydir does not look like a monotone repository
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emptydir does not look like a GNU Arch repository
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emptydir does not look like a Bazaar repository
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cannot find required "p4" tool
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abort: emptydir: missing or unsupported repository
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% convert with imaginary source type
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initializing destination a-foo repository
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abort: foo: invalid source repository type
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% convert with imaginary sink type
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abort: foo: invalid destination repository type
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% testing: convert must not produce duplicate entries in fncache
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initializing destination b repository
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scanning source...
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sorting...
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converting...
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4 a
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3 b
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2 c
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1 d
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0 e
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% contents of fncache file:
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data/a.i
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data/b.i
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% test bogus URL
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abort: bzr+ssh://foobar@selenic.com/baz: missing or unsupported repository
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