[PATCH 1/2] cvsimport: use git-update-index --index-info

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This should reduce the number of git-update-index forks required per
commit. We now do adds/removes in one call, and we are no longer forced to
deal with argv limitations.

---

Oops, apparently using a mail reader is too challenging for me. Here's a
repost with the headers correctly merged.

cb6452bbfda9c52ad8dbeaac6e3440ae61099a05
 git-cvsimport.perl |   36 +++++++++++++-----------------------
 1 files changed, 13 insertions(+), 23 deletions(-)

cb6452bbfda9c52ad8dbeaac6e3440ae61099a05
diff --git a/git-cvsimport.perl b/git-cvsimport.perl
index d257e66..4efb0a5 100755
--- a/git-cvsimport.perl
+++ b/git-cvsimport.perl
@@ -565,29 +565,19 @@ my($patchset,$date,$author_name,$author_
 my(@old,@new,@skipped);
 sub commit {
 	my $pid;
-	while(@old) {
-		my @o2;
-		if(@old > 55) {
-			@o2 = splice(@old,0,50);
-		} else {
-			@o2 = @old;
-			@old = ();
-		}
-		system("git-update-index","--force-remove","--",@o2);
-		die "Cannot remove files: $?\n" if $?;
-	}
-	while(@new) {
-		my @n2;
-		if(@new > 12) {
-			@n2 = splice(@new,0,10);
-		} else {
-			@n2 = @new;
-			@new = ();
-		}
-		system("git-update-index","--add",
-			(map { ('--cacheinfo', @$_) } @n2));
-		die "Cannot add files: $?\n" if $?;
-	}
+
+      	open(my $fh, '|-', qw(git-update-index --index-info))
+		or die "unable to open git-update-index: $!";
+	print $fh 
+		(map { "0 0000000000000000000000000000000000000000\t$_\n" }
+			@old),
+		(map { '100' . sprintf('%o', $_->[0]) . " $_->[1]\t$_->[2]\n" }
+			@new)
+		or die "unable to write to git-update-index: $!";
+	close $fh
+		or die "unable to write to git-update-index: $!";
+	$? and die "git-update-index reported error: $?";
+	@old = @new = ();
 
 	$pid = open(C,"-|");
 	die "Cannot fork: $!" unless defined $pid;
-- 
1.3.3.gcb64-dirty

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