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41529bbce4
Set up some plumbing: teach the svndump lib to pass a file descriptor number to the fast_export lib, representing where cat-blob/ls responses can be read from, and add a get_response_line helper function to the fast_export lib to read a line from that file. Unfortunately this means that svn-fe needs file descriptor 3 to be redirected from somewhere (preferrably the cat-blob stream of a fast-import backend); otherwise it will fail: $ svndump <path> | svn-fe fatal: cannot read from file descriptor 3: Bad file descriptor For the moment, "svn-fe 3</dev/null" works as a workaround but it will not work for very long. A fast-import backend that can retrieve old commits is needed in order to be able to fulfill svn "Node-copyfrom-rev" requests that refer to revs from a previous run. [jn: with new change description] Based-on-patch-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: David Barr <david.barr@cordelta.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
74 lines
2.1 KiB
Text
74 lines
2.1 KiB
Text
svn-fe(1)
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=========
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NAME
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----
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svn-fe - convert an SVN "dumpfile" to a fast-import stream
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SYNOPSIS
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--------
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[verse]
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mkfifo backchannel &&
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svnadmin dump --incremental REPO |
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svn-fe [url] 3<backchannel |
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git fast-import --cat-blob-fd=3 3>backchannel
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DESCRIPTION
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-----------
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Converts a Subversion dumpfile into input suitable for
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git-fast-import(1) and similar importers. REPO is a path to a
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Subversion repository mirrored on the local disk. Remote Subversion
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repositories can be mirrored on local disk using the `svnsync`
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command.
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Note: this tool is very young. The details of its commandline
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interface may change in backward incompatible ways.
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INPUT FORMAT
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------------
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Subversion's repository dump format is documented in full in
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`notes/dump-load-format.txt` from the Subversion source tree.
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Files in this format can be generated using the 'svnadmin dump' or
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'svk admin dump' command.
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Dumps produced with 'svnadmin dump --deltas' (dumpfile format v3)
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are not supported.
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OUTPUT FORMAT
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-------------
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The fast-import format is documented by the git-fast-import(1)
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manual page.
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NOTES
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-----
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Subversion dumps do not record a separate author and committer for
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each revision, nor a separate display name and email address for
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each author. Like git-svn(1), 'svn-fe' will use the name
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---------
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user <user@UUID>
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---------
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as committer, where 'user' is the value of the `svn:author` property
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and 'UUID' the repository's identifier.
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To support incremental imports, 'svn-fe' puts a `git-svn-id` line at
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the end of each commit log message if passed an url on the command
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line. This line has the form `git-svn-id: URL@REVNO UUID`.
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The resulting repository will generally require further processing
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to put each project in its own repository and to separate the history
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of each branch. The 'git filter-branch --subdirectory-filter' command
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may be useful for this purpose.
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BUGS
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----
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Empty directories and unknown properties are silently discarded.
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The exit status does not reflect whether an error was detected.
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SEE ALSO
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--------
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git-svn(1), svn2git(1), svk(1), git-filter-branch(1), git-fast-import(1),
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https://svn.apache.org/repos/asf/subversion/trunk/notes/dump-load-format.txt
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