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# -*- perl -*-
package Debian::Dgit;
use strict;
use warnings;
use POSIX;
use IO::Handle;
BEGIN {
use Exporter ();
our ($VERSION, @ISA, @EXPORT, @EXPORT_OK, %EXPORT_TAGS);
$VERSION = 1.00;
@ISA = qw(Exporter);
@EXPORT = qw(debiantag server_branch server_ref
stat_exists git_for_each_ref
$package_re $component_re $branchprefix
initdebug enabledebug printdebug debugcmd
$debugprefix $debug
shellquote printcmd);
%EXPORT_TAGS = ( policyflags => [qw(NOFFCHECK FRESHREPO)] );
@EXPORT_OK = @{ $EXPORT_TAGS{policyflags} };
}
our @EXPORT_OK;
our $package_re = '[0-9a-z][-+.0-9a-z]*';
our $component_re = '[0-9a-zA-Z][-+.0-9a-zA-Z]*';
our $branchprefix = 'dgit';
# policy hook exit status bits
# see dgit-repos-server head comment for documentation
# 1 is reserved in case something fails with `exit 1'
sub NOFFCHECK () { return 0x2; }
sub FRESHREPO () { return 0x4; }
# 0x80 is reserved
sub debiantag ($) {
my ($v) = @_;
$v =~ y/~:/_%/;
return "debian/$v";
}
sub server_branch ($) { return "$branchprefix/$_[0]"; }
sub server_ref ($) { return "refs/".server_branch($_[0]); }
sub stat_exists ($) {
my ($f) = @_;
return 1 if stat $f;
return 0 if $!==&ENOENT;
die "stat $f: $!";
}
sub git_for_each_ref ($$) {
my ($pattern,$func) = @_;
# calls $func->($objid,$objtype,$fullrefname,$reftail);
# $reftail is RHS of ref after refs/\w+/
# breaks if $pattern matches any ref `refs/blah' where blah has no `/'
my $fh = new IO::File "-|", qw(git for-each-ref), $pattern or die $!;
while (<$fh>) {
m#^(\w+)\s+(\w+)\s+(refs/\w+/(\S+))\s# or die "$_ ?";
$func->($1,$2,$3,$4);
}
$!=0; $?=0; close $fh or die "$pattern $? $!";
}
sub git_for_each_tag_referring ($$) {
my ($objreferring, $func) = @_;
# calls $func->($objid,$fullrefname,$tagname);
git_for_each_ref('refs/tags', sub {
my ($objid,$objtype,$fullrefname,$tagname) = @_;
next unless $objtype eq 'tag';
next if defined $objreferring and $objid ne $objreferring;
$func->($objid,$fullrefname,$tagname);
});
}
our $debugprefix;
our $debug = 0;
sub initdebug ($) {
($debugprefix) = @_;
open ::DEBUG, ">/dev/null" or die $!;
}
sub enabledebug () {
open ::DEBUG, ">&STDERR" or die $!;
::DEBUG->autoflush(1);
$debug ||= 1;
}
sub printdebug {
print ::DEBUG $debugprefix, @_ or die $!;
}
sub shellquote {
my @out;
local $_;
foreach my $a (@_) {
$_ = $a;
if (m{[^-=_./0-9a-z]}i) {
s{['\\]}{'\\$&'}g;
push @out, "'$_'";
} else {
push @out, $_;
}
}
return join ' ', @out;
}
sub printcmd {
my $fh = shift @_;
my $intro = shift @_;
print $fh $intro," " or die $!;
print $fh shellquote @_ or die $!;
print $fh "\n" or die $!;
}
sub debugcmd {
my $extraprefix = shift @_;
printcmd(\*::DEBUG,$debugprefix.$extraprefix,@_) if $debug>0;
}
1;
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