changelog: start 9.14

[dgit.git] / Debian / Dgit.pm

diff --git a/Debian/Dgit.pm b/Debian/Dgit.pm
index d99e52011a3638ad287a393e950f4b3b47a1f785..4059e2b02372388d8c4107beda3a7e757bc9ff00 100644 (file)
--- a/Debian/Dgit.pm
+++ b/Debian/Dgit.pm
@@ -2,7 +2,7 @@
 # dgit
 # Debian::Dgit: functions common to dgit and its helpers and servers
 #
-# Copyright (C) 2015-2016  Ian Jackson
+# Copyright (C) 2015-2019  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
@@ -56,6 +56,7 @@ BEGIN {
                       waitstatusmsg failedcmd_waitstatus
                      failedcmd_report_cmd failedcmd
                       runcmd shell_cmd cmdoutput cmdoutput_errok
+                     @git
                       git_rev_parse changedir_git_toplevel git_cat_file
                      git_get_ref git_get_symref git_for_each_ref
                       git_for_each_tag_referring is_fast_fwd
@@ -67,7 +68,8 @@ BEGIN {
                      reflog_cache_insert reflog_cache_lookup
                       $package_re $component_re $suite_re $deliberately_re
                      $distro_re $versiontag_re $series_filename_re
-                     $orig_f_comp_re $orig_f_sig_re $orig_f_tail_re
+                     $orig_f_comp_re $orig_f_sig_re
+                     $tarball_f_ext_re $orig_f_tail_re
                      $extra_orig_namepart_re
                      $git_null_obj
                       $branchprefix
@@ -106,13 +108,16 @@ our $series_filename_re = qr{(?:^|\.)series(?!\n)$}s;
 our $extra_orig_namepart_re = qr{[-0-9a-zA-Z]+};
 our $orig_f_comp_re = qr{orig(?:-$extra_orig_namepart_re)?};
 our $orig_f_sig_re = '\\.(?:asc|gpg|pgp)';
-our $orig_f_tail_re = "$orig_f_comp_re\\.tar(?:\\.\\w+)?(?:$orig_f_sig_re)?";
+our $tarball_f_ext_re = "\\.tar(?:\\.\\w+)?(?:$orig_f_sig_re)?";
+our $orig_f_tail_re = "$orig_f_comp_re$tarball_f_ext_re";
 our $git_null_obj = '0' x 40;
 our $ffq_refprefix = 'ffq-prev';
 our $gdrlast_refprefix = 'debrebase-last';
 our $printdebug_when_debuglevel = 1;
 our $debugcmd_when_debuglevel = 1;
 
+our (@git) = qw(git);
+
 # these three all go together, only valid after record_maindir
 our $maindir;
 our $maindir_gitdir;
@@ -629,12 +634,15 @@ sub git_check_unmodified () {
 sub upstream_commitish_search ($$) {
     my ($upstream_version, $tried) = @_;
     # todo: at some point maybe use git-deborig to do this
+    my @found;
     foreach my $tagpfx ('', 'v', 'upstream/') {
        my $tag = $tagpfx.(dep14_version_mangle $upstream_version);
        my $new_upstream = git_get_ref "refs/tags/$tag";
        push @$tried, $tag;
-       return $new_upstream if length $new_upstream;
+       push @found, [ $tag, $new_upstream ] if $new_upstream;
     }
+    return @{ $found[0] } if @found == 1;
+    return ();
 }
 
 sub resolve_upstream_version ($$) {
@@ -644,7 +652,8 @@ sub resolve_upstream_version ($$) {
     my $message = __ 'using specified upstream commitish';
     if (!defined $new_upstream) {
        my @tried;
-       $new_upstream = upstream_commitish_search $upstream_version, \@tried;
+       ($used, $new_upstream) =
+           upstream_commitish_search $upstream_version, \@tried;
        if (!length $new_upstream) {
            fail f_
                "Could not determine appropriate upstream commitish.\n".
@@ -652,7 +661,6 @@ sub resolve_upstream_version ($$) {
                " Check version, and specify upstream commitish explicitly.",
                "@tried";
        }
-       $used = $tried[-1];
        $message = f_ 'using upstream from git tag %s', $used;
     } elsif ($new_upstream =~ m{^refs/tags/($versiontag_re)$}s) {
        $message = f_ 'using upstream from git tag %s', $1;
@@ -984,7 +992,7 @@ sub reflog_cache_lookup ($$) {
 #    changedir playground
 #    changedir $maindir
 #
-#    playtree_setup $local_git_cfg
+#    playtree_setup
 #            # ^ call in some (perhaps trivial) subdir of playground
 #
 #    rmtree playground
@@ -1043,28 +1051,28 @@ sub fresh_playground ($) {
 
 # ----- playtrees -----
 
-sub playtree_setup (;$) {
-    my ($t_local_git_cfg) = @_;
-    $t_local_git_cfg //= $local_git_cfg;
+sub playtree_setup () {
     # for use in the playtree
     # $maindir must be set, eg by calling record_maindir or fresh_playground
-    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;
-    }
     # this is confusing: we have
     #   .                   playtree, not a worktree, has .git/, our cwd
     #   $maindir            might be a worktree so
     #   $maindir_gitdir     contains our main working "dgit", HEAD, etc.
     #   $maindir_gitcommon  the shared stuff, including .objects
-    rmtree('.git/objects');
-    symlink "$maindir_gitcommon/objects",'.git/objects' or confess "$!";
+
+    # we need to invoke git-playtree-setup via git because
+    # there may be config options it needs which are only available
+    # to us, sensibly, in @git
+
+    # And, we look for it in @INC too.  This is a bit perverse.
+    # We do this because in the Debian packages we want to have
+    # a copy of this script in each binary package, rather than
+    # making yet another .deb or tangling the dependencies.
+    # @INC is conveniently available.
+    my $newpath = join ':', +(grep { !m/:/ } @INC),
+                 '/usr/share/dgit', $ENV{PATH};
+    runcmd qw(env), "PATH=$newpath", @git, qw(playtree-setup .);
+
     ensuredir '.git/info';
     open GA, "> .git/info/attributes" or confess "$!";
     print GA "* $negate_harmful_gitattrs\n" or confess "$!";