wip tb-create

[topbloke.git] / tb-create.pl

diff --git a/tb-create.pl b/tb-create.pl
index 79d42749015088e8e6c883348733bad87dcbc7af..831fa101b94eed1e46143135d1cc3122c70217a4 100755 (executable)
--- a/tb-create.pl
+++ b/tb-create.pl
@@ -11,7 +11,7 @@ Getopt::Long::Configure(qw(bundling));
 die "bad usage\n" unless @ARGV==1;
 
 our $spec = parse_branch_spec($ARGV[0]);
-our $current = current_tb_branch();
+our $current = current_branch();
 
 die "cannot make branch starting at base of another;".
     " check out a real branch\n" if $current->{Kind} eq 'base';
@@ -41,14 +41,113 @@ if (!defined $spec->{Date}) {
 
 length($spec->{Date})==18 or die "partial date specified, not supported\n";
 
+chdir_toplevel();
+
 check_no_unwanted_metadata('HEAD')
     if $current->{Kind} ne 'tip';
 
+run_git_check_nooutput("cannot create new topbloke branch with staged file(s)",
+                      qw(diff --cached --name-only HEAD --));
+
+run_git_check_nooutput("cannot create new topbloke branch with".
+                      " modified metadata file(s)",
+                      qw(diff --name-only HEAD -- .topbloke));
+
+# For the metadata files in .topbloke, we hope that the user
+# doesn't modify them.  If they do then they get to keep all the pieces.
+#
+# For .topbloke/msg, if it's modified by the user (ie, if working
+# version differs from HEAD) we keep that and stage it.
+
 my $newbranch = "$spec->{Email}\@$spec->{Domain}/$spec->{Date}/$spec->{Nick}";
 
 $newbranch = run_git_1line(qw(check-ref-format --print), $newbranch);
 
+my $author = run_git_1line(qw(var GIT_AUTHOR_IDENT));
+$author =~ s/ \d+ [-+]\d+$// or die $!;
+
+my $subjprefix = git_config('topbloke.subjectprefix', '');
+
 printf "creating %s\n", $newbranch;
 
 setup_config();
 
+#----- subroutines for setup
+
+sub create_and_switch ($) {
+    my ($branchref) = @_;
+    run_git(qw(update-ref -m), "tb-create base", $branchref, 'HEAD');
+    run_git(qw(symbolic-ref HEAD), $branchref);
+}
+
+sub stage_meta ($) {
+    my ($file) = @_;
+    run_git(qw(add), ".topbloke/$file");
+}
+
+sub meta_and_stage ($$) {
+    my ($file, $contents) = @_;
+    wf_contents(".topbloke/$file", $contents);
+    stage_meta($file);
+}
+
+#----- create the base branch
+
+if (lstat '.topbloke') {
+    -d _ or die;
+} else {
+    mkdir('.topbloke') or die "create .topbloke: $!\n";
+}
+
+my $baseref = "refs/topbloke-bases/$newbranch";
+create_and_switch($baseref);
+
+run_git(qw(update-ref -m), "tb-create base", $baseref, 'HEAD');
+run_git(qw(symbolic-ref HEAD), $baseref);
+
+meta_and_stage('msg', "# not applicable\n");
+meta_and_stage('deps', "# not applicable\n");
+meta_and_stage('flags', '');
+
+if ($current->{Kind} eq 'foreign') {
+    meta_and_stage('included', $current->{DepSpec});
+    meta_and_stage('pflags', '');
+}
+
+run_git(qw(commit -q -m), "create base branch $spec->{Nick}\n$newbranch\n");
+
+#----- create the tip branch
+
+my $tipref = "refs/topbloke-tips/$newbranch";
+create_and_switch($tipref);
+
+my $nm = wf_start('.topbloke/msg');
+wf($nm, "From: $author\n");
+foreach my $h (qw(To CC BCC)) {
+    my $estatus;
+    run_git(\$estatus, sub { wf($nm, "$h: $_") or die $!; },
+           qw(config), "topbloke.".lc $h);
+    die "$h $estatus" unless $estatus==0 || $estatus==256;
+}
+wf($nm, <<END) or die $!;
+Subject: [${subjprefix}PATCH] $spec->{Nick}
+
+<patch description>
+
+Signed-off-by: $author
+END
+wf_done($nm);
+stage_meta('msg');
+
+meta_and_stage('deps', "$current->{DepSpec}\n");
+# we inherit empty flags from the base branch
+
+open I, '>>', ".topbloke/included" or die $!;
+print I "$newbranch\n";
+close I or die $!;
+stage_meta('included');
+
+run_git(qw(commit -q -m), "create branch $spec->{Nick}\n$newbranch\n");
+
+
+INCLUDED IS WRONG MISSING NEWLINE