[PATCH] cat-file: be consistent in usage string and documentation.

diff --git a/git-cvsimport-script b/git-cvsimport-script
index 7f93fb3cd7ed747c77236dc127dd94d7b7b8a7de..8f57396c2d815a4209e5b52cfb82465d100c4069 100755 (executable)
--- a/git-cvsimport-script
+++ b/git-cvsimport-script
@@ -28,19 +28,19 @@ use POSIX qw(strftime dup2);
 $SIG{'PIPE'}="IGNORE";
 $ENV{'TZ'}="UTC";
 
-our($opt_h,$opt_o,$opt_v,$opt_d,$opt_p,$opt_C,$opt_z);
+our($opt_h,$opt_o,$opt_v,$opt_d,$opt_p,$opt_C,$opt_z,$opt_i);
 
 sub usage() {
        print STDERR <<END;
 Usage: ${\basename $0}     # fetch/update GIT from CVS
        [ -o branch-for-HEAD ] [ -h ] [ -v ] [ -d CVSROOT ]
        [ -p opts-for-cvsps ] [ -C GIT_repository ] [ -z fuzz ]
-       [ CVS_module ]
+       [ -i ] [ CVS_module ]
 END
        exit(1);
 }
 
-getopts("hqvo:d:p:C:z:") or usage();
+getopts("hivo:d:p:C:z:") or usage();
 usage if $opt_h;
 
 @ARGV <= 1 or usage();
@@ -317,6 +317,7 @@ sub file {
            $res = $self->_line($fh);
            die "No input: $fn $rev\n" unless defined $res;
        }
+       close ($fh);
 
        return ($name, $res);
 }
@@ -359,8 +360,6 @@ sub pmode($) {
        return $m;
 }
 
-my $tmpcv = "/var/cache/cvs";
-
 sub getwd() {
        my $pwd = `pwd`;
        chomp $pwd;
@@ -374,6 +373,7 @@ chdir($git_tree);
 
 my $last_branch = "";
 my $orig_branch = "";
+my $forward_master = 0;
 my %branch_date;
 
 my $git_dir = $ENV{"GIT_DIR"} || ".git";
@@ -405,6 +405,21 @@ unless(-d $git_dir) {
                $last_branch = "master";
        }
        $orig_branch = $last_branch;
+       if (-f "$git_dir/CVS2GIT_HEAD") {
+               die <<EOM;
+CVS2GIT_HEAD exists.
+Make sure your working directory corresponds to HEAD and remove CVS2GIT_HEAD.
+You may need to run
+
+    git-read-tree -m -u CVS2GIT_HEAD HEAD
+EOM
+       }
+       system('cp', "$git_dir/HEAD", "$git_dir/CVS2GIT_HEAD");
+
+       $forward_master =
+           $opt_o ne 'master' && -f "$git_dir/refs/heads/master" &&
+           system('cmp', '-s', "$git_dir/refs/heads/master", 
+                               "$git_dir/refs/heads/$opt_o") == 0;
 
        # populate index
        system('git-read-tree', $last_branch);
@@ -660,7 +675,7 @@ while(<CVS>) {
                $state = 9;
        } elsif($state == 8) {
                $logmsg .= "$_\n";
-       } elsif($state == 9 and /^\s+(\S+):(INITIAL|\d(?:\.\d+)+)->(\d(?:\.\d+)+)\s*$/) {
+       } elsif($state == 9 and /^\s+(\S+):(INITIAL|\d+(?:\.\d+)+)->(\d+(?:\.\d+)+)\s*$/) {
 #      VERSION:1.96->1.96.2.1
                my $init = ($2 eq "INITIAL");
                my $fn = $1;
@@ -668,7 +683,7 @@ while(<CVS>) {
                $fn =~ s#^/+##;
                my ($tmpname, $size) = $cvs->file($fn,$rev);
                print "".($init ? "New" : "Update")." $fn: $size bytes.\n" if $opt_v;
-               open my $F, '-|', "git-write-blob $tmpname"
+               open my $F, '-|', "git-hash-object -w $tmpname"
                        or die "Cannot create object: $!\n";
                my $sha = <$F>;
                chomp $sha;
@@ -697,9 +712,21 @@ while(<CVS>) {
 
 unlink($git_index);
 
+if (defined $orig_git_index) {
+       $ENV{GIT_INDEX_FILE} = $orig_git_index;
+} else {
+       delete $ENV{GIT_INDEX_FILE};
+}
+
 # Now switch back to the branch we were in before all of this happened
 if($orig_branch) {
        print "DONE\n" if $opt_v;
+       system("cp","$git_dir/refs/heads/$opt_o","$git_dir/refs/heads/master")
+               if $forward_master;
+       unless ($opt_i) {
+               system('git-read-tree', '-m', '-u', 'CVS2GIT_HEAD', 'HEAD');
+               die "read-tree failed: $?\n" if $?;
+       }
 } else {
        $orig_branch = "master";
        print "DONE; creating $orig_branch branch\n" if $opt_v;
@@ -707,11 +734,9 @@ if($orig_branch) {
                unless -f "$git_dir/refs/heads/master";
        unlink("$git_dir/HEAD");
        symlink("refs/heads/$orig_branch","$git_dir/HEAD");
-       if (defined $orig_git_index) {
-           $ENV{GIT_INDEX_FILE} = $orig_git_index;
-       } else {
-           delete $ENV{GIT_INDEX_FILE};
+       unless ($opt_i) {
+               system('git checkout');
+               die "checkout failed: $?\n" if $?;
        }
-       system('git checkout');
-       die "checkout failed: $?\n" if $?;
 }
+unlink("$git_dir/CVS2GIT_HEAD");