X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=dgit.git;a=blobdiff_plain;f=dgit;h=bb771cc2b65525d3292d20440c43afb55d138730;hp=fef71e5493355de0410b046a190245e8e3d65408;hb=6e669d14aaea21dc23fcd25a94263d76fb520667;hpb=7969c5b08add442b930ac674ad8dc1607b2063c5
diff --git a/dgit b/dgit
index fef71e54..bb771cc2 100755
--- a/dgit
+++ b/dgit
@@ -1,4 +1,22 @@
#!/usr/bin/perl -w
+# dgit
+# Integration between git and Debian-style archives
+#
+# Copyright (C)2013 Ian Jackson
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see .
+
use strict;
use IO::Handle;
@@ -10,22 +28,37 @@ use POSIX;
open DEBUG, ">&STDERR" or die $!;
-our $pdo = 'http://packages.debian.org/';
-#our $mirror = 'http://mirror.relativity.greenend.org.uk/mirror/debian-ftp/';
+our $mirror = 'http://mirror.relativity.greenend.org.uk/mirror/debian-ftp/';
our $suite = 'sid';
our $package;
+our $sign = 1;
+our $dryrun = 0;
+our $changesfile;
+
our $aliothname = 'iwj@git.debian.org';
our $aliothpath = '/git/dgit-test';
our $alioth_git = "git+ssh://$aliothname/$aliothpath";
our $alioth_sshtestbodge = [$aliothname,$aliothpath];
-our (@dget_opts) = qw(-u);
+our (@git) = qw(git);
+our (@dget) = qw(dget);
+our (@dput) = qw(dput);
+our (@debsign) = qw(debsign);
+our $keyid;
+
+our %opts_opt_map = ('dget' => \@dget,
+ 'dput' => \@dput,
+ 'debsign' => \@debsign);
our $remotename = 'dgit';
+our $ourdscfield = 'Vcs-Git-Master';
+our $branchprefix = 'dgit';
-sub mainbranch () { return "$suite"; }
-sub uploadbranch () { return "upload/$suite"; }
+sub uploadbranch () { return "$branchprefix/$suite"; }
+sub lref ($) { return "refs/heads/$_[0]"; }
+sub rref ($) { return "refs/remotes/$remotename/$_[0]"; }
+sub debiantag ($) { return "debian/$_[0]"; }
our $ua;
@@ -47,35 +80,88 @@ sub runcmd {
die "@_ $! $?" if system @_;
}
-sub cmdoutput {
+sub cmdoutput_errok {
open P, "-|", @_ or die $!;
my $d;
$!=0; $?=0;
{ local $/ = undef; $d = ; }
die if P->error;
- close P or die "@_ $? $!";
+ close P or return undef;
chomp $d;
return $d;
}
+sub cmdoutput {
+ my $d = cmdoutput_errok @_;
+ defined $d or die "@_ $? $!";
+ return $d;
+}
+
+sub dryrun_report {
+ print "#" or die $!;
+ local $_;
+ foreach my $a (@_) {
+ $_ = $a;
+ if (s{['\\]}{\\$&}g || m{\s} || m{[^-_./0-9a-z]}i) {
+ print " '$_'" or die $!;
+ } else {
+ print " $_" or die $!;
+ }
+ }
+ print "\n" or die $!;
+}
+
+sub runcmd_ordryrun {
+ if (!$dryrun) {
+ runcmd @_;
+ } else {
+ dryrun_report @_;
+ }
+}
+
sub parsecontrol {
my $c = Dpkg::Control::Hash->new();
$c->load(@_) or return undef;
return $c;
}
+sub parsechangelog {
+ my $c = Dpkg::Control::Hash->new();
+ my $p = new IO::Handle;
+ open $p, '-|', qw(dpkg-parsechangelog) or die $!;
+ $c->parse($p);
+ $?=0; $!=0; close $p or die "$! $?";
+ return $c;
+}
+
+our $rmad;
+
+sub askmadison () {
+ $rmad ||= cmdoutput qw(rmadison -asource),"-s$suite",$package;
+ $rmad =~ m/^ \s*( [^ \t|]+ )\s* \|
+ \s*( [^ \t|]+ )\s* \|
+ \s*( [^ \t|]+ )\s* \|
+ \s*( [^ \t|]+ )\s* /x or die "$rmad $?";
+ $1 eq $package or die "$rmad $package ?";
+ my $vsn = $2;
+ if ($suite ne $3) {
+ # madison canonicalises for us
+ print "canonical suite name for $suite is $3\n";
+ $suite = $3;
+ }
+ $4 eq 'source' or die "$rmad ?";
+ return $vsn;
+}
+
+sub canonicalise_suite () {
+ askmadison();
+}
+
sub get_archive_dsc () {
- my $pdourl = "$pdo/source/$suite/$package";
- my $pdodata = url_get($pdourl);
- # FFS. The Debian archive has no sane way to find what
- # version is currently the tip in any branch (aka, what
- # is the current version in any suite).
- $pdodata =~ m{
- Download\ \Q$package\E .*
- \\2\
- }msx
- or die "screenscraping of $pdourl failed :-(\n";
- $dscurl = $1;
+ my $vsn = askmadison();
+ # fixme madison does not show us the component
+ my $prefix = substr($package, 0, $package =~ m/^l/ ? 4 : 1);
+ $dscurl = "$mirror/pool/main/$prefix/$package/${package}_$vsn.dsc";
#print DEBUG Dumper($pdodata, $&, $dscurl);
$dscdata = url_get($dscurl);
my $dscfh = new IO::File \$dscdata, '<' or die $!;
@@ -91,7 +177,7 @@ sub check_for_git () {
# returns 0 or 1
my $cmd=
"ssh $alioth_sshtestbodge->[0] '".
- " set -e; cd /git/dgit-test;".
+ " set -e; cd $alioth_sshtestbodge->[1];".
" if test -d $package.git; then echo 1; else echo 0; fi".
"'";
#print DEBUG "$cmd\n";
@@ -103,31 +189,18 @@ sub check_for_git () {
return $r+0;
}
-our ($dsc_hash,$lastupl_hash);
+our ($dsc_hash,$upload_hash);
-sub generate_commit_from_dsc () {
- my $ud = '.git/dgit/unpack';
+our $ud = '.git/dgit/unpack';
+
+sub prep_ud () {
rmtree($ud);
mkpath '.git/dgit';
mkdir $ud or die $!;
- chdir $ud or die $!;
- my @files;
- foreach (split /\n/, ($dsc->{'Checksums-Sha256'} || $dsc->{Files})) {
- next unless m/\S/;
- m/^\w+ \d+ (\S+)$/ or die "$_ ?";
- my $f = $1;
- die if $f =~ m#/|^\.|\.dsc$|\.tmp$#;
- push @files, $f;
- link "../../../$f", $f
- or $!==&ENOENT
- or die "$f $!";
- }
- runcmd qw(dget), @dget_opts, qw(--), $dscurl;
- foreach my $f (grep { m/\.tar\.gz$/ } @files) {
- link $f, "../../../$f"
- or $!==&EEXIST
- or die "$f $!";
- }
+}
+
+sub mktree_in_ud_from_only_subdir () {
+ # changes into the subdir
my (@dirs) = <*/.>;
die unless @dirs==1;
$dirs[0] =~ m#^([^/]+)/\.$# or die;
@@ -138,9 +211,42 @@ sub generate_commit_from_dsc () {
runcmd qw(git init -q);
rmtree('.git/objects');
symlink '../../../../objects','.git/objects' or die $!;
- runcmd qw(git add -Af);
- my $tree = cmdoutput qw(git write-tree);
+ runcmd @git, qw(add -Af);
+ my $tree = cmdoutput @git, qw(write-tree);
chomp $tree; $tree =~ m/^\w+$/ or die "$tree ?";
+ return ($tree,$dir);
+}
+
+sub dsc_files () {
+ map {
+ m/^\w+ \d+ (\S+)$/ or die "$_ ?";
+ $1;
+ } grep m/\S/, split /\n/, ($dsc->{'Checksums-Sha256'} || $dsc->{Files});
+}
+
+sub is_orig_file ($) {
+ local ($_) = @_;
+ m/\.orig\.tar\.\w+$/;
+}
+
+sub generate_commit_from_dsc () {
+ prep_ud();
+ chdir $ud or die $!;
+ my @files;
+ foreach my $f (dsc_files()) {
+ die if $f =~ m#/|^\.|\.dsc$|\.tmp$#;
+ push @files, $f;
+ link "../../../$f", $f
+ or $!==&ENOENT
+ or die "$f $!";
+ }
+ runcmd @dget, qw(--), $dscurl;
+ foreach my $f (grep { is_orig_file($_) } @files) {
+ link $f, "../../../../$f"
+ or $!==&EEXIST
+ or die "$f $!";
+ }
+ my ($tree,$dir) = mktree_in_ud_from_only_subdir();
runcmd qw(sh -ec), 'dpkg-parsechangelog >../changelog.tmp';
my $clogp = parsecontrol('../changelog.tmp','changelog') or die;
my $date = cmdoutput qw(date), '+%s %z', qw(-d),$clogp->{Date};
@@ -150,7 +256,7 @@ sub generate_commit_from_dsc () {
$authline =~ m/^[^<>]+ \<\S+\> \d+ [-+]\d+$/ or die $authline;
open C, ">../commit.tmp" or die $!;
print C "tree $tree\n" or die $!;
- print C "parent $lastupl_hash\n" or die $! if defined $lastupl_hash;
+ print C "parent $upload_hash\n" or die $! if $upload_hash;
print C <{Changes}
END
close C or die $!;
print "synthesised git commit from .dsc $clogp->{Version}\n";
- my $commithash = cmdoutput qw(git hash-object -w -t commit ../commit.tmp);
+ my $commithash = cmdoutput @git, qw(hash-object -w -t commit ../commit.tmp);
chdir '../../../..' or die $!;
- cmdoutput qw(git update-ref -m),"dgit synthesise $clogp->{Version}",
+ cmdoutput @git, qw(update-ref -m),"dgit synthesise $clogp->{Version}",
'DGIT_ARCHIVE', $commithash;
- cmdoutput qw(git log -n2), $commithash;
+ cmdoutput @git, qw(log -n2), $commithash;
# ... gives git a chance to complain if our commit is malformed
my $outputhash = $commithash;
- if (defined $lastupl_hash) {
+ if ($upload_hash) {
chdir "$ud/$dir" or die $!;
- runcmd qw(git reset --hard), $lastupl_hash;
+ runcmd @git, qw(reset --hard), $upload_hash;
runcmd qw(sh -ec), 'dpkg-parsechangelog >>../changelogold.tmp';
my $oldclogp = Dpkg::Control::Hash->new();
$oldclogp->parse('../changelogold.tmp','previous changelog') or die;
@@ -195,35 +301,72 @@ END
return $outputhash;
}
-my $lastupl_ref = "refs/remotes/$remotename/upload/$suite";
+sub ensure_we_have_orig () {
+ foreach my $f (dsc_files()) {
+ next unless is_orig_file($f);
+ if (stat "../$f") {
+ die "$f ?" unless -f _;
+ } else {
+ die "$f $!" unless $!==&ENOENT;
+ }
+ my $origurl = $dscurl;
+ $origurl =~ s{/[^/]+$}{};
+ $origurl .= "/$f";
+ die "$f ?" unless $f =~ m/^${package}_/;
+ die "$f ?" if $f =~ m#/#;
+ runcmd_ordryrun qw(sh -ec),'cd ..; exec "$@"','x',
+ @dget,'--',$origurl;
+ }
+}
+
+sub rev_parse ($) {
+ return cmdoutput @git, qw(rev-parse), "$_[0]~0";
+}
+
+sub is_fast_fwd ($$) {
+ my ($ancestor,$child) = @_;
+ my $mb = cmdoutput @git, qw(merge-base), $dsc_hash, $upload_hash;
+ return rev_parse($mb) eq rev_parse($ancestor);
+}
sub fetch_from_archive () {
- # ensures that $lastupl_ref is what is actually in the archive,
+ # ensures that rref(uploadbranch()) is what is actually in the archive,
# one way or another
- $!=0; $lastupl_hash = `git show-ref --heads $lastupl_ref`;
+ my $upload_ref = rref(uploadbranch());
+ $!=0; $upload_hash =
+ cmdoutput_errok @git, qw(show-ref --heads), $upload_ref;
die $! if $!;
- die $? unless ($?==0 && chomp $lastupl_hash)
- or ($?==128 && !length $lastupl_hash);
+ die $? unless ($?==0 && chomp $upload_hash)
+ or ($?==256 && !length $upload_hash);
+ $upload_hash ||= '';
my $hash;
if (defined $dsc_hash) {
+ die "missing git history even though dsc has hash"
+ unless $upload_hash;
$hash = $dsc_hash;
+ ensure_we_have_orig();
} else {
$hash = generate_commit_from_dsc();
}
- if ($lastupl_hash) {
- my $mb = cmdoutput qw(git merge-base), $dsc_hash, $lastupl_hash;
+ if ($upload_hash) {
die "not fast forward on last upload branch!".
" (archive's version left in DGIT_ARCHIVE)"
- unless $mb eq $lastupl_hash;
+ unless is_fast_fwd($dsc_hash, $upload_hash);
}
- if ($lastupl_ref ne $hash) {
- cmdoutput qw(git update-ref -m), 'dgit fetch', $lastupl_ref, $hash;
+ if ($upload_hash ne $hash) {
+ my @upd_cmd = (@git, qw(update-ref -m), 'dgit fetch', $upload_ref, $hash);
+ if (!$dryrun) {
+ cmdoutput @upd_cmd;
+ } else {
+ dryrun_report @upd_cmd;
+ }
}
}
sub clone () {
+ die "dry run makes no sense with clone" if $dryrun;
get_archive_dsc();
- $dsc_hash = $dsc->{'Vcs-git-master'};
+ $dsc_hash = $dsc->{$ourdscfield};
if (defined $dsc_hash) {
$dsc_hash =~ m/\w+/ or die "$dsc_hash $?";
$dsc_hash = $&;
@@ -232,33 +375,97 @@ sub clone () {
print "last upload to archive has NO git hash\n";
}
my $dstdir = "$package";
+ my $branch = uploadbranch();
if (check_for_git()) {
print "cloning existing git history\n";
- runcmd qw(git clone --origin),$remotename, qw(-b), $suite, '--',
- $alioth_git, $dstdir;
+ runcmd @git, qw(clone --origin),$remotename, qw(-b), $branch, '--',
+ "$alioth_git/$package.git", $dstdir;
chdir "$dstdir" or die "$dstdir $!";
fetch_from_archive();
- runcmd qw(git reset --hard), $lastupl_ref;
+ runcmd @git, qw(reset --hard), rref(uploadbranch());
} else {
- die "missing git history even though dsc has hash" if defined $dsc_hash;
print "starting new git history\n";
mkdir $dstdir or die "$dstdir $!";
chdir "$dstdir" or die "$dstdir $!";
- runcmd qw(git init -q);
+ runcmd @git, qw(init -q);
open H, "> .git/HEAD" or die $!;
- print H "ref: refs/heads/$suite\n" or die $!;
+ print H "ref: ".lref(uploadbranch())."\n" or die $!;
close H or die $!;
- runcmd qw(git remote add), $remotename, $alioth_git;
- runcmd "git config branch.$suite.remote $remotename";
- runcmd "git config branch.$suite.merge refs/heads/$suite";
+ runcmd @git, qw(remote add), $remotename, "$alioth_git/$package.git";
+ runcmd "git config branch.$branch.remote $remotename";
+ runcmd "git config branch.$branch.merge ".lref(uploadbranch());
my $newhash = generate_commit_from_dsc();
- runcmd qw(git reset --hard), $newhash;
+ runcmd @git, qw(reset --hard), $newhash;
}
print "ready for work in $dstdir\n";
}
sub fetch () {
-
+ get_archive_dsc();
+ if (check_for_git()) {
+ runcmd_ordryrun @git, qw(fetch -p),$remotename,
+ '+refs/heads/*:refs/remotes/origin/*';
+ }
+ fetch_from_archive();
+}
+
+sub pull () {
+ fetch();
+ runcmd_ordryrun @git, qw(merge -m),"Merge from $suite [dgit]",
+ lref(uploadbranch());
+}
+
+sub dopush () {
+ runcmd @git, qw(diff --quiet HEAD);
+ my $clogp = parsechangelog();
+ $package = $clogp->{Source};
+ my $dscfn = "${package}_$clogp->{Version}.dsc";
+ stat "../$dscfn" or die "$dscfn $!";
+ $dsc = parsecontrol("../$dscfn");
+ prep_ud();
+ chdir $ud or die $!;
+ print "checking that $dscfn corresponds to HEAD\n";
+ runcmd qw(dpkg-source -x --), "../../../../$dscfn";
+ my ($tree,$dir) = mktree_in_ud_from_only_subdir();
+ chdir '../../../..' or die $!;
+ runcmd @git, qw(diff --exit-code), $tree;
+#fetch from alioth
+#do fast forward check and maybe fake merge
+# if (!is_fast_fwd(mainbranch
+# runcmd @git, qw(fetch -p ), "$alioth_git/$package.git",
+# map { lref($_).":".rref($_) }
+# (uploadbranch());
+ $dsc->{$ourdscfield} = rev_parse('HEAD');
+ $dsc->save("../$dscfn.tmp") or die $!;
+ rename "../$dscfn.tmp","../$dscfn" or die "$dscfn $!";
+ if (!$changesfile) {
+ my $pat = "../${package}_$clogp->{Version}_*.changes";
+ my @cs = glob $pat;
+ die "$pat ?" unless @cs==1;
+ ($changesfile) = @cs;
+ }
+ my $tag = debiantag($dsc->{Version});
+ if (!check_for_git()) {
+ runcmd_ordryrun qw(ssh),$alioth_sshtestbodge->[0],
+ "set -e; cd $alioth_sshtestbodge->[1];".
+ " mkdir -p $package.git;".
+ " cd $package.git;".
+ " if ! test -d objects; then git init --bare; fi";
+ }
+ runcmd_ordryrun @git, qw(push),$remotename,"HEAD:".lref(uploadbranch());
+ if ($sign) {
+ my @tag_cmd = (@git, qw(tag -s -m),
+ "Release $dsc->{Version} for $suite [dgit]");
+ push @tag_cmd, qw(-u),$keyid if defined $keyid;
+ push @tag_cmd, $tag;
+ runcmd_ordryrun @tag_cmd;
+ my @debsign_cmd = @debsign;
+ push @debsign_cmd, "-k$keyid" if defined $keyid;
+ push @debsign_cmd, $changesfile;
+ runcmd_ordryrun @debsign_cmd;
+ }
+ runcmd_ordryrun @git, qw(push),$remotename,"refs/tags/$tag";
+ runcmd_ordryrun @dput, $changesfile;
}
sub cmd_clone {
@@ -272,8 +479,99 @@ sub cmd_clone {
clone();
}
+sub branchsuite () {
+ my $branch = cmdoutput_errok @git, qw(symbolic-ref HEAD);
+ chomp $branch;
+ if ($branch =~ m#^refs/heads/$branchprefix/([^/.]+)$#o) {
+ return $1;
+ } else {
+ return undef;
+ }
+}
+
+sub fetchpullargs () {
+ my $clogp = parsechangelog();
+ $package = $clogp->{Source};
+ if (@ARGV==0) {
+ $suite = branchsuite();
+ $suite ||= $clogp->{Distribution};
+ canonicalise_suite();
+ print "fetching from suite $suite\n";
+ } elsif (@ARGV==1) {
+ ($suite) = @ARGV;
+ canonicalise_suite();
+ } else {
+ die;
+ }
+}
+
+sub cmd_fetch {
+ fetchpullargs();
+ fetch();
+}
+
+sub cmd_pull {
+ fetchpullargs();
+ pull();
+}
+
+sub cmd_push {
+ my $clogp = parsechangelog();
+ $package = $clogp->{Source};
+ if (@ARGV==0) {
+ $suite = $clogp->{Distribution};
+ canonicalise_suite();
+ } else {
+ die;
+ }
+ dopush();
+}
+
+sub cmd_build {
+ my $clogp = parsechangelog();
+ $suite = $clogp->{Distribution};
+ $package = $clogp->{Source};
+ canonicalise_suite();
+ runcmd_ordryrun
+ qw(git-buildpackage -us -uc --git-no-sign-tags),
+ "--git-debian-branch=".uploadbranch(),
+ @ARGV;
+}
+
sub parseopts () {
- die if @ARGV && $ARGV[0] =~ m/^\-/;
+ my $om;
+ while (@ARGV) {
+ last unless $ARGV[0] =~ m/^-/;
+ $_ = shift @ARGV;
+ last if m/^--?$/;
+ if (m/^--/) {
+ if (m/^--dry-run$/) {
+ $dryrun=1;
+ } elsif (m/^--no-sign$/) {
+ $sign=0;
+ } elsif (m/^--(\w+)=(.*)/s && ($om = $opts_opt_map{$1})) {
+ $om->[0] = $2;
+ } elsif (m/^--(\w+):(.*)/s && ($om = $opts_opt_map{$1})) {
+ push @$om, $2;
+ } else {
+ die "$_ ?";
+ }
+ } else {
+ while (m/^-./s) {
+ if (s/^-n/-/) {
+ $dryrun=1;
+ } elsif (s/^-c(.*=.*)//s) {
+ push @git, $1;
+ } elsif (s/^-C(.*)//s) {
+ $changesfile = $1;
+ } elsif (s/^-k(.*)//s) {
+ $keyid=$1;
+ } else {
+ die "$_ ?";
+ }
+ }
+ }
+ }
}
parseopts();