dgit: Allow --deliberately-not-fast-forward to override dgit's fast forward check

[dgit.git] / dgit

diff --git a/dgit b/dgit
index 268f35673d54e17e7013c682473676d92c6e1046..3d3628093e0d42e4ae8d9ac4ed22b05c429611d6 100755 (executable)
--- a/dgit
+++ b/dgit
@@ -183,7 +183,8 @@ sub changedir ($) {
 }
 
 sub deliberately ($) {
-    return !!grep { $_[0] eq $_ } @deliberatelies;
+    my ($enquiry) = @_;
+    return !!grep { $_ eq "--deliberately-$enquiry" } @deliberatelies;
 }
 
 #---------- remote protocol support, common ----------
@@ -386,7 +387,7 @@ sub failedcmd {
 }
 
 sub runcmd {
-    printcmd(\*DEBUG,$debugprefix."+",@_) if $debug>0;
+    debugcmd "+",@_;
     $!=0; $?=0;
     failedcmd @_ if system @_;
 }
@@ -404,16 +405,16 @@ sub printdone {
 
 sub cmdoutput_errok {
     die Dumper(\@_)." ?" if grep { !defined } @_;
-    printcmd(\*DEBUG,$debugprefix."|",@_) if $debug>0;
+    debugcmd "|",@_;
     open P, "-|", @_ or die $!;
     my $d;
     $!=0; $?=0;
     { local $/ = undef; $d = <P>; }
     die $! if P->error;
-    if (!close P) { printdebug "=>!$?\n" if $debug>0; return undef; }
+    if (!close P) { printdebug "=>!$?\n"; return undef; }
     chomp $d;
     $d =~ m/^.*/;
-    printdebug "=> \`$&'",(length $' ? '...' : ''),"\n" if $debug>0; #';
+    printdebug "=> \`$&'",(length $' ? '...' : ''),"\n" if $debuglevel>0; #';
     return $d;
 }
 
@@ -531,8 +532,7 @@ sub cfg {
        my @cmd = (@git, qw(config --), $c);
        my $v;
        {
-           local ($Debian::Dgit::debug) = $debug-1;
-           *debug = *Debian::Dgit::debug; # nnng
+           local ($debuglevel) = $debuglevel-2;
            $v = cmdoutput_errok @cmd;
        };
        if ($?==0) {
@@ -911,7 +911,7 @@ sub sshpsql ($$$) {
               access_runeinfo("ssh-psql $runeinfo").
               " export LC_MESSAGES=C; export LC_CTYPE=C;".
               " ".shellquote qw(psql -A), $dbname, qw(-c), $sql);
-    printcmd(\*DEBUG,$debugprefix."|",@cmd) if $debug>0;
+    debugcmd "|",@cmd;
     open P, "-|", @cmd or die $!;
     while (<P>) {
        chomp or die;
@@ -1043,9 +1043,9 @@ sub get_archive_dsc () {
                    " archive told us to expect $digest";
        }
        my $dscfh = new IO::File \$dscdata, '<' or die $!;
-       printdebug Dumper($dscdata) if $debug>1;
+       printdebug Dumper($dscdata) if $debuglevel>1;
        $dsc = parsecontrolfh($dscfh,$dscurl,1);
-       printdebug Dumper($dsc) if $debug>1;
+       printdebug Dumper($dsc) if $debuglevel>1;
        my $fmt = getfield $dsc, 'Format';
        fail "unsupported source format $fmt, sorry" unless $format_ok{$fmt};
        $dsc_checked = !!$digester;
@@ -1503,7 +1503,7 @@ sub pull () {
 sub check_not_dirty () {
     return if $ignoredirty;
     my @cmd = (@git, qw(diff --quiet HEAD));
-    printcmd(\*DEBUG,$debugprefix."+",@cmd) if $debug>0;
+    debugcmd "+",@cmd;
     $!=0; $?=0; system @cmd;
     return if !$! && !$?;
     if (!$! && $?==256) {
@@ -1658,7 +1658,8 @@ sub sign_changes ($) {
     }
 }
 
-sub dopush () {
+sub dopush ($) {
+    my ($forceflag) = @_;
     printdebug "actually entering push\n";
     prep_ud();
 
@@ -1693,9 +1694,9 @@ sub dopush () {
         $dscpath =~ m#^/# ? $dscpath : "../../../$dscpath";
     my ($tree,$dir) = mktree_in_ud_from_only_subdir();
     changedir '../../../..';
-    my $diffopt = $debug>0 ? '--exit-code' : '--quiet';
+    my $diffopt = $debuglevel>0 ? '--exit-code' : '--quiet';
     my @diffcmd = (@git, qw(diff), $diffopt, $tree);
-    printcmd \*DEBUG,$debugprefix."+",@diffcmd;
+    debugcmd "+",@diffcmd;
     $!=0; $?=0;
     my $r = system @diffcmd;
     if ($r) {
@@ -1737,7 +1738,6 @@ sub dopush () {
     responder_send_command("param head $head");
     responder_send_command("param csuite $csuite");
 
-    my $forceflag = deliberately('not-fast-forward') ? '+' : '';
     if ($forceflag && defined $lastpush_hash) {
        git_for_each_tag_referring($lastpush_hash, sub {
            my ($objid,$fullrefname,$tagname) = @_;
@@ -1902,17 +1902,27 @@ sub cmd_push {
     if (check_for_git()) {
        git_fetch_us();
     }
+    my $forceflag = '';
     if (fetch_from_archive()) {
-       is_fast_fwd(lrref(), 'HEAD') or
+       if (is_fast_fwd(lrref(), 'HEAD')) {
+           # ok
+       } elsif (deliberately('not-fast-forward') ||
+                deliberately('TEST-not-fast-forward-dgit-only')) {
+           $forceflag = '+';
+       } else {
            fail "dgit push: HEAD is not a descendant".
                " of the archive's version.\n".
-               "$us: To overwrite it, use git merge -s ours ".lrref().".";
+               "$us: To overwrite its contents,".
+               " use git merge -s ours ".lrref().".\n".
+               "$us: To rewind history, if permitted by the archive,".
+               " use --deliberately-not-fast-forward";
+       }
     } else {
        $new_package or
            fail "package appears to be new in this suite;".
                " if this is intentional, use --new";
     }
-    dopush();
+    dopush($forceflag);
 }
 
 #---------- remote commands' implementation ----------
@@ -1993,7 +2003,7 @@ sub cmd_rpush {
     push @rdgit, qw(remote-push-build-host), (scalar @rargs), @rargs;
     push @rdgit, @ARGV;
     my @cmd = (@ssh, $host, shellquote @rdgit);
-    printcmd \*DEBUG,$debugprefix."+",@cmd;
+    debugcmd "+",@cmd;
 
     if (defined $initiator_tempdir) {
        rmtree $initiator_tempdir;
@@ -2698,6 +2708,7 @@ sub cmd_archive_api_query {
     badusage "need only 1 subpath argument" unless @ARGV==1;
     my ($subpath) = @ARGV;
     my @cmd = archive_api_query_cmd($subpath);
+    debugcmd ">",@cmd;
     exec @cmd or fail "exec curl: $!\n";
 }
 
@@ -2784,7 +2795,7 @@ sub parseopts () {
            } elsif (m/^--no-rm-on-error$/s) {
                push @ropts, $_;
                $rmonerror = 0;
-           } elsif (m/^--deliberately-($suite_re)$/s) {
+           } elsif (m/^--deliberately-($deliberately_re)$/s) {
                push @ropts, $_;
                push @deliberatelies, $&;
            } else {
@@ -2802,7 +2813,7 @@ sub parseopts () {
                    cmd_help();
                } elsif (s/^-D/-/) {
                    push @ropts, $&;
-                   $debug++;
+                   $debuglevel++;
                    enabledebug();
                } elsif (s/^-N/-/) {
                    push @ropts, $&;