mirror of
https://github.com/facebook/sapling.git
synced 2024-10-09 00:14:35 +03:00
b4f44d39a5
Summary: We don't support any of these VCS's, and we're not running any of the tests. The code is just bit rotting. Let's delete them. Reviewed By: quark-zju Differential Revision: D19043710 fbshipit-source-id: 6e0d625c755cbc875755dc09b394bc730186db1d
524 lines
19 KiB
Perl
524 lines
19 KiB
Perl
#chg-compatible
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$ . helpers-usechg.sh
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$ cat >> $HGRCPATH <<EOF
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> [extensions]
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> convert=
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> [convert]
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> hg.saverev=False
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> EOF
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$ hg help convert
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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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- git [git]
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- Subversion [svn]
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- Perforce [p4]
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- Google Repo [repo]
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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.
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It 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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--closesort try to move closed revisions as close as possible to parent
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branches, only supported by 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 authormap is a simple text file that maps each source commit author to
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a destination commit author. It is handy for source SCMs that use unix
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logins to identify authors (e.g.: CVS). One line per author mapping and
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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. The default if there are no
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"include" statements is to include everything. If there are any "include"
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statements, nothing else is included. The "exclude" directive causes files
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or directories to be omitted. The "rename" directive renames a file or
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directory if it is converted. To rename from a subdirectory into the root
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of the repository, use "." as the path to rename to.
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"--full" will make sure the converted changesets contain exactly the right
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files with the right content. It will make a full conversion of all files,
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not just the ones that have changed. Files that already are correct will
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not be changed. This can be used to apply filemap changes when converting
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incrementally. This is currently only supported for Mercurial and
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Subversion.
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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 new branch name.
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This can be used to (for instance) move code in one repository from
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"default" to a named branch.
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Mercurial Source
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################
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The Mercurial source recognizes the following configuration options, which
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you can set on the command line with "--config":
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convert.hg.ignoreerrors
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ignore integrity errors when reading. Use it to fix
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Mercurial repositories with missing revlogs, by converting
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from and to Mercurial. Default is False.
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convert.hg.saverev
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store original revision ID in changeset (forces target IDs
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to change). It takes a boolean argument and defaults to
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False.
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convert.hg.startrev
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specify the initial Mercurial revision. The default is 0.
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convert.hg.revs
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revset specifying the source revisions to convert.
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Subversion Source
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#################
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Subversion source detects classical trunk/branches layouts. By default,
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the supplied "svn://repo/path/" source URL is converted as a single
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branch. If "svn://repo/path/trunk" exists it replaces the default branch.
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If "svn://repo/path/branches" exists, its subdirectories are listed as
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possible branches. Default "trunk" and "branches" values can be overridden
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with following options. Set them to paths relative to the source URL, or
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leave them blank to disable auto detection.
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The following options can be set with "--config":
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convert.svn.branches
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specify the directory containing branches. The default is
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"branches".
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convert.svn.trunk
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specify the name of the trunk branch. The default is
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"trunk".
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convert.localtimezone
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use local time (as determined by the TZ environment
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variable) for changeset date/times. The default is False
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(use UTC).
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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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convert.svn.startrev
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specify start Subversion revision number. The default is 0.
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Git Source
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##########
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The Git importer converts commits from all reachable branches (refs in
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refs/heads) and remotes (refs in refs/remotes) to Mercurial. Branches are
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converted to bookmarks with the same name, with the leading 'refs/heads'
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stripped. Git submodules are not supported.
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The following options can be set with "--config":
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convert.git.similarity
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specify how similar files modified in a commit must be to be
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imported as renames or copies, as a percentage between "0"
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(disabled) and "100" (files must be identical). For example,
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"90" means that a delete/add pair will be imported as a
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rename if more than 90% of the file hasn't changed. The
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default is "50".
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convert.git.findcopiesharder
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while detecting copies, look at all files in the working
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copy instead of just changed ones. This is very expensive
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for large projects, and is only effective when
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"convert.git.similarity" is greater than 0. The default is
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False.
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convert.git.renamelimit
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perform rename and copy detection up to this many changed
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files in a commit. Increasing this will make rename and copy
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detection more accurate but will significantly slow down
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computation on large projects. The option is only relevant
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if "convert.git.similarity" is greater than 0. The default
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is "400".
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convert.git.committeractions
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list of actions to take when processing author and committer
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values.
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Git commits have separate author (who wrote the commit) and committer
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(who applied the commit) fields. Not all destinations support separate
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author and committer fields (including Mercurial). This config option
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controls what to do with these author and committer fields during
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conversion.
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A value of "messagedifferent" will append a "committer: ..." line to
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the commit message if the Git committer is different from the author.
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The prefix of that line can be specified using the syntax
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"messagedifferent=<prefix>". e.g. "messagedifferent=git-committer:".
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When a prefix is specified, a space will always be inserted between
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the prefix and the value.
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"messagealways" behaves like "messagedifferent" except it will always
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result in a "committer: ..." line being appended to the commit
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message. This value is mutually exclusive with "messagedifferent".
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"dropcommitter" will remove references to the committer. Only
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references to the author will remain. Actions that add references to
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the committer will have no effect when this is set.
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"replaceauthor" will replace the value of the author field with the
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committer. Other actions that add references to the committer will
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still take effect when this is set.
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The default is "messagedifferent".
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convert.git.extrakeys
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list of extra keys from commit metadata to copy to the
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destination. Some Git repositories store extra metadata in
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commits. By default, this non-default metadata will be lost
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during conversion. Setting this config option can retain
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that metadata. Some built-in keys such as "parent" and
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"branch" are not allowed to be copied.
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convert.git.remoteprefix
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remote refs are converted as bookmarks with
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"convert.git.remoteprefix" as a prefix followed by a /. The
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default is 'remote'.
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convert.git.saverev
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whether to store the original Git commit ID in the metadata
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of the destination commit. The default is True.
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convert.git.skipsubmodules
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does not convert root level .gitmodules files or files with
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160000 mode indicating a submodule. Default is False.
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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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The following options can be set with "--config":
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convert.p4.encoding
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specify the encoding to use when decoding standard output of
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the Perforce command line tool. The default is default
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system encoding.
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convert.p4.startrev
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specify initial Perforce revision (a Perforce changelist
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number).
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Mercurial Destination
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#####################
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The following options are supported:
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convert.hg.clonebranches
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dispatch source branches in separate clones. The default is
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False.
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convert.hg.usebranchnames
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preserve branch names. The default is True.
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convert.hg.sourcename
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records the given string as a 'convert_source' extra value
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on each commit made in the target repository. The default is
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None.
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Options ([+] can be repeated):
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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 source revision REV
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-A --authormap FILE remap usernames using this file
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--filemap FILE remap file names using contents of file
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--full apply filemap changes by converting all files again
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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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--closesort try to reorder closed revisions
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(some details hidden, use --verbose to show complete help)
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$ hg init a
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$ cd a
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$ echo a > a
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$ hg ci -d'0 0' -Ama
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adding a
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$ hg cp a b
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$ hg ci -d'1 0' -mb
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$ hg rm a
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$ hg ci -d'2 0' -mc
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$ hg mv b a
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$ hg ci -d'3 0' -md
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$ echo a >> a
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$ hg ci -d'4 0' -me
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$ cd ..
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$ hg convert a 2>&1 | grep -v 'subversion python bindings could not be loaded'
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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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$ hg --cwd a-hg pull ../a
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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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conversion to existing file should fail
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$ touch bogusfile
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$ hg convert a bogusfile
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initializing destination bogusfile repository
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abort: cannot create new bundle repository
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[255]
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#if unix-permissions no-root
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conversion to dir without permissions should fail
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$ mkdir bogusdir
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$ chmod 000 bogusdir
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$ hg convert a bogusdir
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abort: Permission denied: 'bogusdir'
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[255]
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user permissions should succeed
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$ chmod 700 bogusdir
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$ hg convert a bogusdir
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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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#endif
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test pre and post conversion actions
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$ echo 'include b' > filemap
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$ hg convert --debug --filemap filemap a partialb | \
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> grep 'run hg'
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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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$ mkdir emptydir
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#if normal-layout
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override $PATH to ensure p4 not visible
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$ PATH="$BINDIR" "$BINDIR"/hg convert emptydir
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assuming destination emptydir-hg
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initializing destination emptydir-hg repository
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$TESTTMP/emptydir does not look like a Git repository
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emptydir does not look like a Subversion repository
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emptydir is not a local Mercurial repository
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cannot find required "p4" tool
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emptydir does not look like a repo repository
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abort: emptydir: missing or unsupported repository
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[255]
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#endif
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convert with imaginary source type
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$ hg convert --source-type foo a a-foo
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initializing destination a-foo repository
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abort: foo: invalid source repository type
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[255]
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convert with imaginary sink type
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$ hg convert --dest-type foo a a-foo
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abort: foo: invalid destination repository type
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[255]
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testing: convert must not produce duplicate entries in fncache
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$ hg convert a b
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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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$ cat b/.hg/store/fncache | sort
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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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$ hg convert -q bzr+ssh://foobar@selenic.com/baz baz
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abort: bzr+ssh://foobar@selenic.com/baz: missing or unsupported repository
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[255]
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test revset converted() lookup
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$ hg --config convert.hg.saverev=True convert a c
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initializing destination c 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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$ echo f > c/f
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$ hg -R c ci -d'0 0' -Amf
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adding f
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$ hg -R c log -r "converted(09d945a62ce6)"
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changeset: 1:98c3dd46a874
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user: test
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date: Thu Jan 01 00:00:01 1970 +0000
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summary: b
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$ hg -R c log -r "converted()"
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changeset: 0:31ed57b2037c
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user: test
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date: Thu Jan 01 00:00:00 1970 +0000
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summary: a
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changeset: 1:98c3dd46a874
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user: test
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date: Thu Jan 01 00:00:01 1970 +0000
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summary: b
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changeset: 2:3b9ca06ef716
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user: test
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date: Thu Jan 01 00:00:02 1970 +0000
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summary: c
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changeset: 3:4e0debd37cf2
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user: test
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date: Thu Jan 01 00:00:03 1970 +0000
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summary: d
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changeset: 4:9de3bc9349c5
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user: test
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date: Thu Jan 01 00:00:04 1970 +0000
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summary: e
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test specifying a sourcename
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$ echo g > a/g
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$ hg -R a ci -d'0 0' -Amg
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adding g
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$ hg --config convert.hg.sourcename=mysource --config convert.hg.saverev=True convert a c
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scanning source...
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sorting...
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converting...
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0 g
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$ hg -R c log -r tip --template '{extras % "{extra}\n"}'
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branch=default
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convert_revision=a3bc6100aa8ec03e00aaf271f1f50046fb432072
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convert_source=mysource
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$ cat > branchmap.txt << EOF
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> old branch new_branch
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> EOF
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$ echo gg > a/g
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$ hg -R a ci -m 'branch name with spaces'
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$ hg convert --branchmap branchmap.txt a d
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initializing destination d repository
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scanning source...
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sorting...
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converting...
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6 a
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5 b
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4 c
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3 d
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2 e
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1 g
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0 branch name with spaces
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