Merge branch 'ap/maint-apply-modefix' into maint

diff --git a/git-cvsexportcommit.perl b/git-cvsexportcommit.perl
index 9d142d08a5f59f15857453596d43ab9d8f987a25..6d9f0ef0f989133422cf8c0302e63dab15a999d5 100755 (executable)
--- a/git-cvsexportcommit.perl
+++ b/git-cvsexportcommit.perl
@@ -5,28 +5,34 @@
 use File::Temp qw(tempdir);
 use Data::Dumper;
 use File::Basename qw(basename dirname);
+use File::Spec;
+use Git;
 
-our ($opt_h, $opt_P, $opt_p, $opt_v, $opt_c, $opt_f, $opt_a, $opt_m, $opt_d, $opt_u, $opt_w);
+our ($opt_h, $opt_P, $opt_p, $opt_v, $opt_c, $opt_f, $opt_a, $opt_m, $opt_d, $opt_u, $opt_w, $opt_W);
 
-getopts('uhPpvcfam:d:w:');
+getopts('uhPpvcfam:d:w:W');
 
 $opt_h && usage();
 
 die "Need at least one commit identifier!" unless @ARGV;
 
-if ($opt_w) {
+# Get git-config settings
+my $repo = Git->repository();
+$opt_w = $repo->config('cvsexportcommit.cvsdir') unless defined $opt_w;
+
+if ($opt_w || $opt_W) {
+       # Remember where GIT_DIR is before changing to CVS checkout
        unless ($ENV{GIT_DIR}) {
-               # Remember where our GIT_DIR is before changing to CVS checkout
+               # No GIT_DIR set. Figure it out for ourselves
                my $gd =`git-rev-parse --git-dir`;
                chomp($gd);
-               if ($gd eq '.git') {
-                       my $wd = `pwd`;
-                       chomp($wd);
-                       $gd = $wd."/.git"       ;
-               }
                $ENV{GIT_DIR} = $gd;
        }
+       # Make sure GIT_DIR is absolute
+       $ENV{GIT_DIR} = File::Spec->rel2abs($ENV{GIT_DIR});
+}
 
+if ($opt_w) {
        if (! -d $opt_w."/CVS" ) {
                die "$opt_w is not a CVS checkout";
        }
@@ -117,6 +123,15 @@
     }
 }
 
+my $go_back_to = 0;
+
+if ($opt_W) {
+    $opt_v && print "Resetting to $parent\n";
+    $go_back_to = `git symbolic-ref HEAD 2> /dev/null ||
+       git rev-parse HEAD` || die "Could not determine current branch";
+    system("git checkout -q $parent^0") && die "Could not check out $parent^0";
+}
+
 $opt_v && print "Applying to CVS commit $commit from parent $parent\n";
 
 # grab the commit message
@@ -211,7 +226,8 @@
        my $basename = basename($name);
 
        $basename = "no file " . $basename if (exists($added{$basename}));
-       chomp($basename);
+       $basename =~ s/^\s+//;
+       $basename =~ s/\s+$//;
 
        if (!exists($fullname{$basename})) {
          $fullname{$basename} = $name;
@@ -260,7 +276,11 @@
 }
 
 print "Applying\n";
-`GIT_DIR= git-apply $context --summary --numstat --apply <.cvsexportcommit.diff` || die "cannot patch";
+if ($opt_W) {
+    system("git checkout -q $commit^0") && die "cannot patch";
+} else {
+    `GIT_DIR= git-apply $context --summary --numstat --apply <.cvsexportcommit.diff` || die "cannot patch";
+}
 
 print "Patch applied successfully. Adding new files and directories to CVS\n";
 my $dirtypatch = 0;
@@ -313,7 +333,9 @@
     print "using a patch program. After applying the patch and resolving the\n";
     print "problems you may commit using:";
     print "\n    cd \"$opt_w\"" if $opt_w;
-    print "\n    $cmd\n\n";
+    print "\n    $cmd\n";
+    print "\n    git checkout $go_back_to\n" if $go_back_to;
+    print "\n";
     exit(1);
 }
 
@@ -333,6 +355,14 @@
 # clean up
 unlink(".cvsexportcommit.diff");
 
+if ($opt_W) {
+    system("git checkout $go_back_to") && die "cannot move back to $go_back_to";
+    if (!($go_back_to =~ /^[0-9a-fA-F]{40}$/)) {
+       system("git symbolic-ref HEAD $go_back_to") &&
+           die "cannot move back to $go_back_to";
+    }
+}
+
 # CVS version 1.11.x and 1.12.x sleeps the wrong way to ensure the timestamp
 # used by CVS and the one set by subsequence file modifications are different.
 # If they are not different CVS will not detect changes.
@@ -340,7 +370,7 @@
 
 sub usage {
        print STDERR <<END;
-Usage: GIT_DIR=/path/to/.git ${\basename $0} [-h] [-p] [-v] [-c] [-f] [-u] [-w cvsworkdir] [-m msgprefix] [ parent ] commit
+Usage: GIT_DIR=/path/to/.git git cvsexportcommit [-h] [-p] [-v] [-c] [-f] [-u] [-w cvsworkdir] [-m msgprefix] [ parent ] commit
 END
        exit(1);
 }