git-svn: add an option to skip the creation of empty directories

"git svn mkdirs" (which creates empty directories in the current
working copy) can be very slow and is often unnecessary.  Provide a
config file option "svn-remote.<name>.automkdirs" that prevents empty
directories from being created automatically.  (They are still created
if "git svn mkdirs" is invoked explicitly.)

Based-on-patch-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/git-svn.txt b/Documentation/git-svn.txt
index ea8fafd18a7e5f79a017f0f6ea0bbfdbf947461b..f470fbf82bf128511a34634ccb14208dd3ba7ac0 100644 (file)
--- a/Documentation/git-svn.txt
+++ b/Documentation/git-svn.txt
@@ -343,6 +343,8 @@ Any other arguments are passed directly to 'git log'
        Empty directories are automatically recreated when using
        "git svn clone" and "git svn rebase", so "mkdirs" is intended
        for use after commands like "git checkout" or "git reset".
+       (See the svn-remote.<name>.automkdirs config file option for
+       more information.)
 
 'commit-diff'::
        Commits the diff of two tree-ish arguments from the
@@ -663,6 +665,14 @@ svn.pathnameencoding::
        locales to avoid corrupted file names with non-ASCII characters.
        Valid encodings are the ones supported by Perl's Encode module.
 
+svn-remote.<name>.automkdirs::
+       Normally, the "git svn clone" and "git svn rebase" commands
+       attempt to recreate empty directories that are in the
+       Subversion repository.  If this option is set to "false", then
+       empty directories will only be created if the "git svn mkdirs"
+       command is run explicitly.  If unset, 'git svn' assumes this
+       option to be "true".
+
 Since the noMetadata, rewriteRoot, rewriteUUID, useSvnsyncProps and useSvmProps
 options all affect the metadata generated and used by 'git svn'; they
 *must* be set in the configuration file before any history is imported

diff --git a/git-svn.perl b/git-svn.perl
index a5857c1ad45b0462f168a4b3b9249ed8c3cf6e89..9a9b0949f539f6cd475d449352d0004a0cc16400 100755 (executable)
--- a/git-svn.perl
+++ b/git-svn.perl
@@ -781,6 +781,15 @@ sub cmd_find_rev {
        print "$result\n" if $result;
 }
 
+sub auto_create_empty_directories {
+       my ($gs) = @_;
+       my $var = eval { command_oneline('config', '--get', '--bool',
+                                        "svn-remote.$gs->{repo_id}.automkdirs") };
+       # By default, create empty directories by consulting the unhandled log,
+       # but allow setting it to 'false' to skip it.
+       return !($var && $var eq 'false');
+}
+
 sub cmd_rebase {
        command_noisy(qw/update-index --refresh/);
        my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
@@ -804,7 +813,9 @@ sub cmd_rebase {
                $_fetch_all ? $gs->fetch_all : $gs->fetch;
        }
        command_noisy(rebase_cmd(), $gs->refname);
-       $gs->mkemptydirs;
+       if (auto_create_empty_directories($gs)) {
+               $gs->mkemptydirs;
+       }
 }
 
 sub cmd_show_ignore {
@@ -1242,7 +1253,9 @@ sub post_fetch_checkout {
        command_noisy(qw/read-tree -m -u -v HEAD HEAD/);
        print STDERR "Checked out HEAD:\n  ",
                     $gs->full_url, " r", $gs->last_rev, "\n";
-       $gs->mkemptydirs($gs->last_rev);
+       if (auto_create_empty_directories($gs)) {
+               $gs->mkemptydirs($gs->last_rev);
+       }
 }
 
 sub complete_svn_url {

diff --git a/t/t9146-git-svn-empty-dirs.sh b/t/t9146-git-svn-empty-dirs.sh
index 158c8e33ef3381f3310ac39a99932d185290d685..6d3130e61856335dff7004903741a490ae94fc08 100755 (executable)
--- a/t/t9146-git-svn-empty-dirs.sh
+++ b/t/t9146-git-svn-empty-dirs.sh
@@ -28,6 +28,23 @@ test_expect_success 'empty directories exist' '
        )
 '
 
+test_expect_success 'option automkdirs set to false' '
+       (
+               git svn init "$svnrepo" cloned-no-mkdirs &&
+               cd cloned-no-mkdirs &&
+               git config svn-remote.svn.automkdirs false &&
+               git svn fetch &&
+               for i in a b c d d/e d/e/f "weird file name"
+               do
+                       if test -d "$i"
+                       then
+                               echo >&2 "$i exists"
+                               exit 1
+                       fi
+               done
+       )
+'
+
 test_expect_success 'more emptiness' '
        svn_cmd mkdir -m "bang bang"  "$svnrepo"/"! !"
 '