git-svn: correctly track diff-less copies with do_switch

diff --git a/git-archimport.perl b/git-archimport.perl
index 841738d5c755209fe24aa5026cda13423d226ad9..66aaeae1021eb3c791815f927e95a87e7afa557c 100755 (executable)
--- a/git-archimport.perl
+++ b/git-archimport.perl
@@ -14,7 +14,7 @@ =head1 Invocation
 
 Imports a project from one or more Arch repositories. It will follow branches
 and repositories within the namespaces defined by the <archive/branch>
-parameters suppplied. If it cannot find the remote branch a merge comes from
+parameters supplied. If it cannot find the remote branch a merge comes from
 it will just import it as a regular commit. If it can find it, it will mark it 
 as a merge whenever possible.
 
@@ -88,13 +88,22 @@ END
 # $arch_branches:
 # values associated with keys:
 #   =1 - Arch version / git 'branch' detected via abrowse on a limit
-#   >1 - Arch version / git 'branch' of an auxilliary branch we've merged
+#   >1 - Arch version / git 'branch' of an auxiliary branch we've merged
 my %arch_branches = map { $_ => 1 } @ARGV;
 
 $ENV{'TMPDIR'} = $opt_t if $opt_t; # $ENV{TMPDIR} will affect tempdir() calls:
 my $tmp = tempdir('git-archimport-XXXXXX', TMPDIR => 1, CLEANUP => 1);
 $opt_v && print "+ Using $tmp as temporary directory\n";
 
+unless (-d $git_dir) { # initial import needs empty directory
+    opendir DIR, '.' or die "Unable to open current directory: $!\n";
+    while (my $entry = readdir DIR) {
+        $entry =~ /^\.\.?$/ or
+            die "Initial import needs an empty current working directory.\n"
+    }
+    closedir DIR
+}
+
 my %reachable = ();             # Arch repositories we can access
 my %unreachable = ();           # Arch repositories we can't access :<
 my @psets  = ();                # the collection
@@ -226,7 +235,7 @@ sub do_abrowse {
 unless (-d $git_dir) { # initial import
     if ($psets[0]{type} eq 'i' || $psets[0]{type} eq 't') {
         print "Starting import from $psets[0]{id}\n";
-       `git-init-db`;
+       `git-init`;
        die $! if $?;
        $import = 1;
     } else {
@@ -346,12 +355,10 @@ sub process_patchset_accurate {
     } 
     
     # update the index with all the changes we got
+    system('git-diff-files --name-only -z | '.
+            'git-update-index --remove -z --stdin') == 0 or die "$! $?\n";
     system('git-ls-files --others -z | '.
             'git-update-index --add -z --stdin') == 0 or die "$! $?\n";
-    system('git-ls-files --deleted -z | '.
-            'git-update-index --remove -z --stdin') == 0 or die "$! $?\n";
-    system('git-ls-files -z | '.
-             'git-update-index -z --stdin') == 0 or die "$! $?\n";
     return 1;
 }
 
@@ -416,22 +423,14 @@ sub process_patchset_fast {
     # imports don't give us good info
     # on added files. Shame on them
     if ($ps->{type} eq 'i' || $ps->{type} eq 't') {
-        system('git-ls-files --others -z | '.
-                'git-update-index --add -z --stdin') == 0 or die "$! $?\n";
         system('git-ls-files --deleted -z | '.
                 'git-update-index --remove -z --stdin') == 0 or die "$! $?\n";
+        system('git-ls-files --others -z | '.
+                'git-update-index --add -z --stdin') == 0 or die "$! $?\n";
     }
 
     # TODO: handle removed_directories and renamed_directories:
-   
-    if (my $add = $ps->{new_files}) {
-        while (@$add) {
-            my @slice = splice(@$add, 0, 100);
-            system('git-update-index','--add','--',@slice) == 0 or
-                            die "Error in git-update-index --add: $! $?\n";
-        }
-    }
-   
+
     if (my $del = $ps->{removed_files}) {
         unlink @$del;
         while (@$del) {
@@ -462,6 +461,14 @@ sub process_patchset_fast {
         }
     }
 
+    if (my $add = $ps->{new_files}) {
+        while (@$add) {
+            my @slice = splice(@$add, 0, 100);
+            system('git-update-index','--add','--',@slice) == 0 or
+                            die "Error in git-update-index --add: $! $?\n";
+        }
+    }
+
     if (my $mod = $ps->{modified_files}) {
         while (@$mod) {
             my @slice = splice(@$mod, 0, 100);
@@ -669,7 +676,7 @@ sub apply_cset {
     if (`find $tmp/changeset/patches -type f -name '*.patch'`) {
         # this can be sped up considerably by doing
         #    (find | xargs cat) | patch
-        # but that cna get mucked up by patches
+        # but that can get mucked up by patches
         # with missing trailing newlines or the standard 
         # 'missing newline' flag in the patch - possibly
         # produced with an old/buggy diff.
@@ -930,7 +937,7 @@ sub find_parents {
 
        # now walk up to the mergepoint collecting what patches we have
        my $branchtip = git_rev_parse($ps->{branch});
-       my @ancestors = `git-rev-list --merge-order $branchtip ^$mergebase`;
+       my @ancestors = `git-rev-list --topo-order $branchtip ^$mergebase`;
        my %have; # collected merges this branch has
        foreach my $merge (@{$ps->{merges}}) {
            $have{$merge} = 1;
@@ -953,7 +960,7 @@ sub find_parents {
        # see what the remote branch has - these are the merges we 
        # will want to have in a consecutive series from the mergebase
        my $otherbranchtip = git_rev_parse($branch);
-       my @needraw = `git-rev-list --merge-order $otherbranchtip ^$mergebase`;
+       my @needraw = `git-rev-list --topo-order $otherbranchtip ^$mergebase`;
        my @need;
        foreach my $needps (@needraw) {         # get the psets
            $needps = commitid2pset($needps);
@@ -1028,7 +1035,7 @@ sub commitid2pset {
 }
 
 
-# an alterative to `command` that allows input to be passed as an array
+# an alternative to `command` that allows input to be passed as an array
 # to work around shell problems with weird characters in arguments
 sub safe_pipe_capture {
     my @output;