@EXPORT = qw(debiantag server_branch server_ref
stat_exists fail waitstatusmsg failedcmd
cmdoutput cmdoutput_errok
- git_for_each_ref
- git_for_each_tag_referring
+ git_rev_parse git_for_each_ref
+ git_for_each_tag_referring is_fast_fwd
$package_re $component_re $deliberately_re
$branchprefix
initdebug enabledebug enabledebuglevel
return $d;
}
+sub git_rev_parse ($) {
+ return cmdoutput qw(git rev-parse), "$_[0]~0";
+}
+
sub git_for_each_ref ($$) {
my ($pattern,$func) = @_;
# calls $func->($objid,$objtype,$fullrefname,$reftail);
sub git_for_each_tag_referring ($$) {
my ($objreferring, $func) = @_;
- # calls $func->($objid,$fullrefname,$tagname);
+ # calls $func->($tagobjid,$refobjid,$fullrefname,$tagname);
printdebug "git_for_each_tag_referring ",
($objreferring // 'UNDEF'),"\n";
git_for_each_ref('refs/tags', sub {
- my ($objid,$objtype,$fullrefname,$tagname) = @_;
+ my ($tagobjid,$objtype,$fullrefname,$tagname) = @_;
return unless $objtype eq 'tag';
- return if defined $objreferring and $objid ne $objreferring;
- $func->($objid,$fullrefname,$tagname);
+ my $refobjid = git_rev_parse $tagobjid;
+ return unless
+ !defined $objreferring # caller wants them all
+ or $tagobjid eq $objreferring
+ or $refobjid eq $objreferring;
+ $func->($tagobjid,$refobjid,$fullrefname,$tagname);
});
}
+sub is_fast_fwd ($$) {
+ my ($ancestor,$child) = @_;
+ my @cmd = (qw(git merge-base), $ancestor, $child);
+ my $mb = cmdoutput_errok @cmd;
+ if (defined $mb) {
+ return git_rev_parse($mb) eq git_rev_parse($ancestor);
+ } else {
+ $?==256 or failedcmd @cmd;
+ return 0;
+ }
+}
+
1;