When a user performs an svn copy of a directory, exactly the same versions
of children are copied to the destination directory. This means that the
same file (or directory) version might be located under many different
paths of the repository. What I'm looking for is a way to determine a UUID
for a file or directory so that when viewed from any of the paths (and peg
revisions) in the repository that use that same object, you would see the
same UUID. However, I cannot see any easy way of doing this.
SVN must be keeping track of this internally. If you show the log entries
for the file under the copied directory, you can see the entries for the
copied parent directory as well as the log where the file was originally
created under its original path. However, connecting all of these up are
non trivial. Let me give an example:
cd <workingcopy>/trunk
svn mkdir xxx
svn mkdir xxx/a
touch xxx/a/xxx.txt
svn add xxx/a/xxx.txt
svn mkdir xxx/b
touch xxx/b/xxx.txt
svn add xxx/b/xxx.txt
svn commit -m "setup example start"
svn mkdir yyy
svn copy xxx/a yyy
svn commit -m "copy dir"
svn rename yyy zzz
svn commit -m "rename dir"
Now at this point, file at the repository path /trunk/zzz/a/xxx.txt is the
same object as at /trunk/xxx/a/xxx.txt. However, determining this does not
appear to be easy. If you do:
svn log zzz/a/xxx.txt
you can see the changes going back to the first revision. But it's not
obvious which of the two files named xxx.txt in that log correspond to one
under zzz/a.
Is there an easy way of doing this?
For example, if there was a UUID for files and directories, it would be
trivial. But I cannot find anything equivalent.
Or is it as brutal as having to traverse not only the logs but also the
parents and their logs?
The background behind the question is about exchanging data with other
tools and avoiding creating duplicate objects in those tools for what are
essentially the same object with the same set of SVN properties.
Thanks,
David.
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Received on 2009-07-30 18:12:11 CEST