Documentation: --cherry-pick

diff --git a/git-cvsexportcommit.perl b/git-cvsexportcommit.perl
index 4863c91fe3c713c9e1b05d78b9bd22583ff4a4c0..6ed471918df25006314f3f2c6177bdd018757068 100755 (executable)
--- a/git-cvsexportcommit.perl
+++ b/git-cvsexportcommit.perl
@@ -15,14 +15,21 @@
     die "GIT_DIR is not defined or is unreadable";
 }
 
-our ($opt_h, $opt_p, $opt_v, $opt_c, $opt_f, $opt_a, $opt_m );
+our ($opt_h, $opt_P, $opt_p, $opt_v, $opt_c, $opt_f, $opt_a, $opt_m, $opt_d);
 
-getopts('hpvcfam:');
+getopts('hPpvcfam:d:');
 
 $opt_h && usage();
 
 die "Need at least one commit identifier!" unless @ARGV;
 
+my @cvs;
+if ($opt_d) {
+       @cvs = ('cvs', '-d', $opt_d);
+} else {
+       @cvs = ('cvs');
+}
+
 # setup a tempdir
 our ($tmpdir, $tmpdirname) = tempdir('git-cvsapplycommit-XXXXXX',
                                     TMPDIR => 1,
@@ -89,7 +96,7 @@
            last;
        }; # found it
     }
-    die "Did not find $parent in the parents for this commit!" if !$found;
+    die "Did not find $parent in the parents for this commit!" if !$found and !$opt_P;
 } else { # we don't have a parent from the cmdline...
     if (@parents == 1) { # it's safe to get it from the commit
        $parent = $parents[0];
@@ -117,12 +124,17 @@
 `git-diff-tree --binary -p $parent $commit >.cvsexportcommit.diff`;# || die "Cannot diff";
 
 ## apply non-binary changes
-my $fuzz = $opt_p ? 0 : 2;
+
+# In pedantic mode require all lines of context to match.  In normal
+# mode, be compatible with diff/patch: assume 3 lines of context and
+# require at least one line match, i.e. ignore at most 2 lines of
+# context, like diff/patch do by default.
+my $context = $opt_p ? '' : '-C1';
 
 print "Checking if patch will apply\n";
 
 my @stat;
-open APPLY, "GIT_DIR= git-apply -C$fuzz --binary --summary --numstat<.cvsexportcommit.diff|" || die "cannot patch";
+open APPLY, "GIT_DIR= git-apply $context --binary --summary --numstat<.cvsexportcommit.diff|" || die "cannot patch";
 @stat=<APPLY>;
 close APPLY || die "Cannot patch";
 my (@bfiles,@files,@afiles,@dfiles);
@@ -160,7 +172,7 @@
        my $p = $1;
        next if (grep { $_ eq $p } @dirs);
     }
-    my @status = grep(m/^File/,  safe_pipe_capture('cvs', '-q', 'status' ,$f));
+    my @status = grep(m/^File/,  safe_pipe_capture(@cvs, '-q', 'status' ,$f));
     if (@status > 1) { warn 'Strange! cvs status returned more than one line?'};
     if (-d dirname $f and $status[0] !~ m/Status: Unknown$/
        and $status[0] !~ m/^File: no file /) {
@@ -173,7 +185,7 @@
 foreach my $f (@files) {
     next if grep { $_ eq $f } @afiles;
     # TODO:we need to handle removed in cvs
-    my @status = grep(m/^File/,  safe_pipe_capture('cvs', '-q', 'status' ,$f));
+    my @status = grep(m/^File/,  safe_pipe_capture(@cvs, '-q', 'status' ,$f));
     if (@status > 1) { warn 'Strange! cvs status returned more than one line?'};
     unless ($status[0] =~ m/Status: Up-to-date$/) {
        $dirty = 1;
@@ -189,12 +201,12 @@
 }
 
 print "Applying\n";
-`GIT_DIR= git-apply -C$fuzz --binary --summary --numstat --apply <.cvsexportcommit.diff` || die "cannot patch";
+`GIT_DIR= git-apply $context --binary --summary --numstat --apply <.cvsexportcommit.diff` || die "cannot patch";
 
 print "Patch applied successfully. Adding new files and directories to CVS\n";
 my $dirtypatch = 0;
 foreach my $d (@dirs) {
-    if (system('cvs','add',$d)) {
+    if (system(@cvs,'add',$d)) {
        $dirtypatch = 1;
        warn "Failed to cvs add directory $d -- you may need to do it manually";
     }
@@ -202,9 +214,9 @@
 
 foreach my $f (@afiles) {
     if (grep { $_ eq $f } @bfiles) {
-      system('cvs', 'add','-kb',$f);
+      system(@cvs, 'add','-kb',$f);
     } else {
-      system('cvs', 'add', $f);
+      system(@cvs, 'add', $f);
     }
     if ($?) {
        $dirtypatch = 1;
@@ -213,7 +225,7 @@
 }
 
 foreach my $f (@dfiles) {
-    system('cvs', 'rm', '-f', $f);
+    system(@cvs, 'rm', '-f', $f);
     if ($?) {
        $dirtypatch = 1;
        warn "Failed to cvs rm -f $f -- you may need to do it manually";
@@ -223,7 +235,7 @@
 print "Commit to CVS\n";
 print "Patch title (first comment line): $title\n";
 my @commitfiles = map { unless (m/\s/) { '\''.$_.'\''; } else { $_; }; } (@files);
-my $cmd = "cvs commit -F .msg @commitfiles";
+my $cmd = join(' ', @cvs)." commit -F .msg @commitfiles";
 
 if ($dirtypatch) {
     print "NOTE: One or more hunks failed to apply cleanly.\n";
@@ -236,18 +248,19 @@
 
 if ($opt_c) {
     print "Autocommit\n  $cmd\n";
-    print safe_pipe_capture('cvs', 'commit', '-F', '.msg', @files);
+    print safe_pipe_capture(@cvs, 'commit', '-F', '.msg', @files);
     if ($?) {
        die "Exiting: The commit did not succeed";
     }
     print "Committed successfully to CVS\n";
+    # clean up
+    unlink(".msg");
 } else {
     print "Ready for you to commit, just run:\n\n   $cmd\n";
 }
 
 # clean up
 unlink(".cvsexportcommit.diff");
-unlink(".msg");
 
 sub usage {
        print STDERR <<END;