X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=dgit.git;a=blobdiff_plain;f=Debian%2FDgit.pm;h=515a32f600b805634a8b3991e21b702c603dc56d;hp=e9921d6a33435c5c34164eca3f2dc2174bf1e4ef;hb=d99fbfc09e25cda5a7e95c3c632436d22cb4e59a;hpb=f773b1ed2796196e0fa801886fce493544c38fe0 diff --git a/Debian/Dgit.pm b/Debian/Dgit.pm index e9921d6a..515a32f6 100644 --- a/Debian/Dgit.pm +++ b/Debian/Dgit.pm @@ -28,6 +28,8 @@ use IO::Handle; use Config; use Digest::SHA; use Data::Dumper; +use IPC::Open2; +use File::Path; BEGIN { use Exporter (); @@ -35,27 +37,34 @@ BEGIN { $VERSION = 1.00; @ISA = qw(Exporter); - @EXPORT = qw(setup_sigwarn + @EXPORT = qw(setup_sigwarn forkcheck_setup forkcheck_mainprocess dep14_version_mangle debiantags debiantag_old debiantag_new server_branch server_ref stat_exists link_ltarget hashfile - fail ensuredir executable_on_path + fail ensuredir must_getcwd executable_on_path waitstatusmsg failedcmd_waitstatus failedcmd_report_cmd failedcmd - cmdoutput cmdoutput_errok - git_rev_parse git_get_ref git_for_each_ref + runcmd cmdoutput cmdoutput_errok + git_rev_parse git_cat_file + git_get_ref git_for_each_ref git_for_each_tag_referring is_fast_fwd $package_re $component_re $deliberately_re + $distro_re $versiontag_re $series_filename_re $branchprefix initdebug enabledebug enabledebuglevel printdebug debugcmd $debugprefix *debuglevel *DEBUG - shellquote printcmd messagequote); + shellquote printcmd messagequote + $negate_harmful_gitattrs + changedir git_slurp_config_src + playtree_setup); # implicitly uses $main::us - %EXPORT_TAGS = ( policyflags => [qw(NOFFCHECK FRESHREPO NOCOMMITCHECK)] ); - @EXPORT_OK = @{ $EXPORT_TAGS{policyflags} }; + %EXPORT_TAGS = ( policyflags => [qw(NOFFCHECK FRESHREPO NOCOMMITCHECK)], + playground => [qw($local_git_cfg)]); + @EXPORT_OK = ( @{ $EXPORT_TAGS{policyflags} }, + @{ $EXPORT_TAGS{playground} } ); } our @EXPORT_OK; @@ -63,7 +72,10 @@ our @EXPORT_OK; our $package_re = '[0-9a-z][-+.0-9a-z]*'; our $component_re = '[0-9a-zA-Z][-+.0-9a-zA-Z]*'; our $deliberately_re = "(?:TEST-)?$package_re"; +our $distro_re = $component_re; +our $versiontag_re = qr{[-+.\%_0-9a-zA-Z/]+}; our $branchprefix = 'dgit'; +our $series_filename_re = qr{(?:^|\.)series(?!\n)$}s; # policy hook exit status bits # see dgit-repos-server head comment for documentation @@ -76,10 +88,23 @@ sub NOCOMMITCHECK () { return 0x8; } our $debugprefix; our $debuglevel = 0; +our $negate_harmful_gitattrs = "-text -eol -crlf -ident -filter"; + +our $forkcheck_mainprocess; + +sub forkcheck_setup () { + $forkcheck_mainprocess = $$; +} + +sub forkcheck_mainprocess () { + # You must have called forkcheck_setup or setup_sigwarn already + getppid != $forkcheck_mainprocess; +} + sub setup_sigwarn () { - our $sigwarn_mainprocess = $$; + forkcheck_setup(); $SIG{__WARN__} = sub { - die $_[0] unless getppid == $sigwarn_mainprocess; + die $_[0] if forkcheck_mainprocess; }; } @@ -121,6 +146,7 @@ sub messagequote ($) { sub shellquote { my @out; local $_; + defined or confess 'internal error' foreach @_; foreach my $a (@_) { $_ = $a; if (!length || m{[^-=_./:0-9a-z]}i) { @@ -198,6 +224,12 @@ sub ensuredir ($) { die "mkdir $dir: $!"; } +sub must_getcwd () { + my $d = getcwd(); + defined $d or fail "getcwd failed: $!"; + return $d; +} + sub executable_on_path ($) { my ($program) = @_; return 1 if $program =~ m{/}; @@ -258,6 +290,12 @@ sub failedcmd { fail failedcmd_waitstatus(); } +sub runcmd { + debugcmd "+",@_; + $!=0; $?=-1; + failedcmd @_ if system @_; +} + sub cmdoutput_errok { confess Dumper(\@_)." ?" if grep { !defined } @_; debugcmd "|",@_; @@ -306,6 +344,29 @@ sub git_rev_parse ($) { return cmdoutput qw(git rev-parse), "$_[0]~0"; } +sub git_cat_file ($) { + my ($objname) = @_; + # => ($type, $data) or ('missing', undef) + # in scalar context, just the data + our ($gcf_pid, $gcf_i, $gcf_o); + if (!$gcf_pid) { + my @cmd = qw(git cat-file --batch); + debugcmd "GCF|", @cmd; + $gcf_pid = open2 $gcf_o, $gcf_i, @cmd or die $!; + } + printdebug "GCF>| ", $objname, "\n"; + print $gcf_i $objname, "\n" or die $!; + my $x = <$gcf_o>; + printdebug "GCF<| ", $x; + if ($x =~ m/ (missing)$/) { return ($1, undef); } + my ($type, $size) = $x =~ m/^.* (\w+) (\d+)\n/ or die "$objname ?"; + my $data; + (read $gcf_o, $data, $size) == $size or die "$objname $!"; + $x = <$gcf_o>; + $x eq "\n" or die "$objname ($_) $!"; + return ($type, $data); +} + sub git_for_each_ref ($$;$) { my ($pattern,$func,$gitdir) = @_; # calls $func->($objid,$objtype,$fullrefname,$reftail); @@ -365,4 +426,64 @@ sub is_fast_fwd ($$) { } } +sub changedir ($) { + my ($newdir) = @_; + printdebug "CD $newdir\n"; + chdir $newdir or confess "chdir: $newdir: $!"; +} + +sub git_slurp_config_src ($) { + my ($src) = @_; + # returns $r such that $r->{KEY}[] = VALUE + my @cmd = (qw(git config -z --get-regexp), "--$src", qw(.*)); + debugcmd "|",@cmd; + + local ($debuglevel) = $debuglevel-2; + local $/="\0"; + + my $r = { }; + open GITS, "-|", @cmd or die $!; + while () { + chomp or die; + printdebug "=> ", (messagequote $_), "\n"; + m/\n/ or die "$_ ?"; + push @{ $r->{$`} }, $'; #'; + } + $!=0; $?=0; + close GITS + or ($!==0 && $?==256) + or failedcmd @cmd; + return $r; +} + +# ========== playground handling ========== + +# $local_git_cfg hash of arrays of values: git config from $maindir + +our $local_git_cfg; + +# ----- playtrees ----- + +sub playtree_setup (;$) { + my ($t_local_git_cfg) = @_; + $t_local_git_cfg //= $local_git_cfg; + # should be run in a directory .git/FOO/BAR of a working tree + runcmd qw(git init -q); + runcmd qw(git config gc.auto 0); + foreach my $copy (qw(user.email user.name user.useConfigOnly + core.sharedRepository + core.compression core.looseCompression + core.bigFileThreshold core.fsyncObjectFiles)) { + my $v = $t_local_git_cfg->{$copy}; + next unless $v; + runcmd qw(git config), $copy, $_ foreach @$v; + } + rmtree('.git/objects'); + symlink '../../../../objects','.git/objects' or die $!; + ensuredir '.git/info'; + open GA, "> .git/info/attributes" or die $!; + print GA "* $negate_harmful_gitattrs\n" or die $!; + close GA or die $!; +} + 1;