You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
236 lines
8.4 KiB
236 lines
8.4 KiB
git-svn(1) |
|
========== |
|
|
|
NAME |
|
---- |
|
git-svn - bidirectional operation between a single Subversion branch and git |
|
|
|
SYNOPSIS |
|
-------- |
|
'git-svn' <command> [options] [arguments] |
|
|
|
DESCRIPTION |
|
----------- |
|
git-svn is a simple conduit for changesets between a single Subversion |
|
branch and git. |
|
|
|
git-svn is not to be confused with git-svnimport. The were designed |
|
with very different goals in mind. |
|
|
|
git-svn is designed for an individual developer who wants a |
|
bidirectional flow of changesets between a single branch in Subversion |
|
and an arbitrary number of branches in git. git-svnimport is designed |
|
for read-only operation on repositories that match a particular layout |
|
(albeit the recommended one by SVN developers). |
|
|
|
For importing svn, git-svnimport is potentially more powerful when |
|
operating on repositories organized under the recommended |
|
trunk/branch/tags structure, and should be faster, too. |
|
|
|
git-svn completely ignores the very limited view of branching that |
|
Subversion has. This allows git-svn to be much easier to use, |
|
especially on repositories that are not organized in a manner that |
|
git-svnimport is designed for. |
|
|
|
COMMANDS |
|
-------- |
|
init:: |
|
Creates an empty git repository with additional metadata |
|
directories for git-svn. The SVN_URL must be specified |
|
at this point. |
|
|
|
fetch:: |
|
Fetch unfetched revisions from the SVN_URL we are tracking. |
|
refs/heads/git-svn-HEAD will be updated to the latest revision. |
|
|
|
Note: You should never attempt to modify the git-svn-HEAD branch |
|
outside of git-svn. Instead, create a branch from git-svn-HEAD |
|
and work on that branch. Use the 'commit' command (see below) |
|
to write git commits back to git-svn-HEAD. |
|
|
|
commit:: |
|
Commit specified commit or tree objects to SVN. This relies on |
|
your imported fetch data being up-to-date. This makes |
|
absolutely no attempts to do patching when committing to SVN, it |
|
simply overwrites files with those specified in the tree or |
|
commit. All merging is assumed to have taken place |
|
independently of git-svn functions. |
|
|
|
rebuild:: |
|
Not a part of daily usage, but this is a useful command if |
|
you've just cloned a repository (using git-clone) that was |
|
tracked with git-svn. Unfortunately, git-clone does not clone |
|
git-svn metadata and the svn working tree that git-svn uses for |
|
its operations. This rebuilds the metadata so git-svn can |
|
resume fetch operations. SVN_URL may be optionally specified if |
|
the directory/repository you're tracking has moved or changed |
|
protocols. |
|
|
|
show-ignore:: |
|
Recursively finds and lists the svn:ignore property on |
|
directories. The output is suitable for appending to |
|
the $GIT_DIR/info/exclude file. |
|
|
|
OPTIONS |
|
------- |
|
-r <ARG>:: |
|
--revision <ARG>:: |
|
Only used with the 'fetch' command. |
|
|
|
Takes any valid -r<argument> svn would accept and passes it |
|
directly to svn. -r<ARG1>:<ARG2> ranges and "{" DATE "}" syntax |
|
is also supported. This is passed directly to svn, see svn |
|
documentation for more details. |
|
|
|
This can allow you to make partial mirrors when running fetch. |
|
|
|
-:: |
|
--stdin:: |
|
Only used with the 'commit' command. |
|
|
|
Read a list of commits from stdin and commit them in reverse |
|
order. Only the leading sha1 is read from each line, so |
|
git-rev-list --pretty=oneline output can be used. |
|
|
|
--rmdir:: |
|
Only used with the 'commit' command. |
|
|
|
Remove directories from the SVN tree if there are no files left |
|
behind. SVN can version empty directories, and they are not |
|
removed by default if there are no files left in them. git |
|
cannot version empty directories. Enabling this flag will make |
|
the commit to SVN act like git. |
|
|
|
-e:: |
|
--edit:: |
|
Only used with the 'commit' command. |
|
|
|
Edit the commit message before committing to SVN. This is off by |
|
default for objects that are commits, and forced on when committing |
|
tree objects. |
|
|
|
-l<num>:: |
|
--find-copies-harder:: |
|
Both of these are only used with the 'commit' command. |
|
|
|
They are both passed directly to git-diff-tree see |
|
git-diff-tree(1) for more information. |
|
|
|
COMPATIBILITY OPTIONS |
|
--------------------- |
|
--no-ignore-externals:: |
|
Only used with the 'fetch' and 'rebuild' command. |
|
|
|
By default, git-svn passes --ignore-externals to svn to avoid |
|
fetching svn:external trees into git. Pass this flag to enable |
|
externals tracking directly via git. |
|
|
|
Versions of svn that do not support --ignore-externals are |
|
automatically detected and this flag will be automatically |
|
enabled for them. |
|
|
|
Otherwise, do not enable this flag unless you know what you're |
|
doing. |
|
|
|
--no-stop-on-copy:: |
|
Only used with the 'fetch' command. |
|
|
|
By default, git-svn passes --stop-on-copy to avoid dealing with |
|
the copied/renamed branch directory problem entirely. A |
|
copied/renamed branch is the result of a <SVN_URL> being created |
|
in the past from a different source. These are problematic to |
|
deal with even when working purely with svn if you work inside |
|
subdirectories. |
|
|
|
Do not use this flag unless you know exactly what you're getting |
|
yourself into. You have been warned. |
|
|
|
Examples |
|
~~~~~~~~ |
|
|
|
Tracking and contributing to an Subversion managed-project: |
|
|
|
# Initialize a tree (like git init-db):: |
|
git-svn init http://svn.foo.org/project/trunk |
|
# Fetch remote revisions:: |
|
git-svn fetch |
|
# Create your own branch to hack on:: |
|
git checkout -b my-branch git-svn-HEAD |
|
# Commit only the git commits you want to SVN:: |
|
git-svn commit <tree-ish> [<tree-ish_2> ...] |
|
# Commit all the git commits from my-branch that don't exist in SVN:: |
|
git-svn commit git-svn-HEAD..my-branch |
|
# Something is committed to SVN, pull the latest into your branch:: |
|
git-svn fetch && git pull . git-svn-HEAD |
|
# Append svn:ignore settings to the default git exclude file: |
|
git-svn show-ignore >> .git/info/exclude |
|
|
|
DESIGN PHILOSOPHY |
|
----------------- |
|
Merge tracking in Subversion is lacking and doing branched development |
|
with Subversion is cumbersome as a result. git-svn completely forgoes |
|
any automated merge/branch tracking on the Subversion side and leaves it |
|
entirely up to the user on the git side. It's simply not worth it to do |
|
a useful translation when the the original signal is weak. |
|
|
|
TRACKING MULTIPLE REPOSITORIES OR BRANCHES |
|
------------------------------------------ |
|
This is for advanced users, most users should ignore this section. |
|
|
|
Because git-svn does not care about relationships between different |
|
branches or directories in a Subversion repository, git-svn has a simple |
|
hack to allow it to track an arbitrary number of related _or_ unrelated |
|
SVN repositories via one git repository. Simply set the GIT_SVN_ID |
|
environment variable to a name other other than "git-svn" (the default) |
|
and git-svn will ignore the contents of the $GIT_DIR/git-svn directory |
|
and instead do all of its work in $GIT_DIR/$GIT_SVN_ID for that |
|
invocation. The interface branch will be $GIT_SVN_ID-HEAD, instead of |
|
git-svn-HEAD. Any $GIT_SVN_ID-HEAD branch should never be modified |
|
by the user outside of git-svn commands. |
|
|
|
ADDITIONAL FETCH ARGUMENTS |
|
-------------------------- |
|
This is for advanced users, most users should ignore this section. |
|
|
|
Unfetched SVN revisions may be imported as children of existing commits |
|
by specifying additional arguments to 'fetch'. Additional parents may |
|
optionally be specified in the form of sha1 hex sums at the |
|
command-line. Unfetched SVN revisions may also be tied to particular |
|
git commits with the following syntax: |
|
|
|
svn_revision_number=git_commit_sha1 |
|
|
|
This allows you to tie unfetched SVN revision 375 to your current HEAD:: |
|
|
|
git-svn fetch 375=$(git-rev-parse HEAD) |
|
|
|
BUGS |
|
---- |
|
If somebody commits a conflicting changeset to SVN at a bad moment |
|
(right before you commit) causing a conflict and your commit to fail, |
|
your svn working tree ($GIT_DIR/git-svn/tree) may be dirtied. The |
|
easiest thing to do is probably just to rm -rf $GIT_DIR/git-svn/tree and |
|
run 'rebuild'. |
|
|
|
We ignore all SVN properties except svn:executable. Too difficult to |
|
map them since we rely heavily on git write-tree being _exactly_ the |
|
same on both the SVN and git working trees and I prefer not to clutter |
|
working trees with metadata files. |
|
|
|
svn:keywords can't be ignored in Subversion (at least I don't know of |
|
a way to ignore them). |
|
|
|
Renamed and copied directories are not detected by git and hence not |
|
tracked when committing to SVN. I do not plan on adding support for |
|
this as it's quite difficult and time-consuming to get working for all |
|
the possible corner cases (git doesn't do it, either). Renamed and |
|
copied files are fully supported if they're similar enough for git to |
|
detect them. |
|
|
|
Author |
|
------ |
|
Written by Eric Wong <normalperson@yhbt.net>. |
|
|
|
Documentation |
|
------------- |
|
Written by Eric Wong <normalperson@yhbt.net>.
|
|
|