Eric Wong <normalperson@xxxxxxxx> wrote:
> Michael G Schwern <schwern@xxxxxxxxx> wrote:
> > On 2012.7.28 6:55 AM, Jonathan Nieder wrote:
> > > Michael G. Schwern wrote:
> > >> --- a/perl/Git/SVN/Utils.pm
> > >> +++ b/perl/Git/SVN/Utils.pm
> > >> @@ -86,6 +86,27 @@ sub _collapse_dotdot {
> > >>
> > >>
> > >> sub canonicalize_path {
> > >> + my $path = shift;
> > >> +
> > >> + # The 1.7 way to do it
> > >> + if ( defined &SVN::_Core::svn_dirent_canonicalize ) {
> > >> + $path = _collapse_dotdot($path);
> > >> + return SVN::_Core::svn_dirent_canonicalize($path);
> > >> + }
> > >> + # The 1.6 way to do it
> > >> + elsif ( defined &SVN::_Core::svn_path_canonicalize ) {
> > >> + $path = _collapse_dotdot($path);
> > >> + return SVN::_Core::svn_path_canonicalize($path);
> > >> + }
> > >> + # No SVN API canonicalization is available, do it ourselves
> > >> + else {
> > >
> > > When would this "else" case trip?
> >
> > When svn_path_canonicalize() does not exist in the SVN API, presumably because
> > their SVN is too old.
svn_path_canonicalize() may be accessible in some versions of SVN,
but it'll return undef.
I'm squashing the change below to have it fall back to
_canonicalize_path_ourselves in the case svn_path_canonicalize()
is present but unusable.
> > > Would it be safe to make it
> > > return an error message, or even to do something like the following?
> >
> > I don't know what your SVN backwards compat requirements are, or when
> > svn_path_canonicalize() appears in the API, so I left it as is. git-svn's
> > home rolled path canonicalization worked and its no work to leave it working.
> > No reason to break it IMO.
>
> I agree there's no reason to break something on older SVN.
>
> git-svn should work with whatever SVN is in CentOS 5.x and similar
> distros (SVN 1.4.2). As long as an active "long-term" distro supports
> a version of SVN, I think we should support that if it's not too
> difficult.
I've tested the following on an old CentOS 5.2 chroot with SVN 1.4.2:
diff --git a/perl/Git/SVN/Utils.pm b/perl/Git/SVN/Utils.pm
index b7727db..4bb4dde 100644
--- a/perl/Git/SVN/Utils.pm
+++ b/perl/Git/SVN/Utils.pm
@@ -88,22 +88,25 @@ sub _collapse_dotdot {
sub canonicalize_path {
my $path = shift;
+ my $rv;
# The 1.7 way to do it
if ( defined &SVN::_Core::svn_dirent_canonicalize ) {
$path = _collapse_dotdot($path);
- return SVN::_Core::svn_dirent_canonicalize($path);
+ $rv = SVN::_Core::svn_dirent_canonicalize($path);
}
# The 1.6 way to do it
+ # This can return undef on subversion-perl-1.4.2-2.el5 (CentOS 5.2)
elsif ( defined &SVN::_Core::svn_path_canonicalize ) {
$path = _collapse_dotdot($path);
- return SVN::_Core::svn_path_canonicalize($path);
- }
- # No SVN API canonicalization is available, do it ourselves
- else {
- $path = _canonicalize_path_ourselves($path);
- return $path;
+ $rv = SVN::_Core::svn_path_canonicalize($path);
}
+
+ return $rv if defined $rv;
+
+ # No SVN API canonicalization is available, or the SVN API
+ # didn't return a successful result, do it ourselves
+ return _canonicalize_path_ourselves($path);
}
--
Eric Wong
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