X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=topbloke.git;a=blobdiff_plain;f=tb-create.pl;h=3a9afc311112826f9367c2c0e59358937702e995;hp=d4c9a7e9751c691abf4165e909c85fdb22b9b0d1;hb=HEAD;hpb=47e14f5f217382a1265241b2ec391306bd6e31d4

diff --git a/tb-create.pl b/tb-create.pl
index d4c9a7e..3a9afc3 100755
--- a/tb-create.pl
+++ b/tb-create.pl
@@ -1,4 +1,5 @@
 #!/usr/bin/perl
+# usage: tb-create <patch-spec>
 
 use warnings;
 use strict;
@@ -10,14 +11,11 @@ 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 $spec = parse_patch_spec($ARGV[0]);
+our $current = current_branch();
 
-die "cannot make branch starting at base of another;".
-    " check out a real branch\n" if $current->{Kind} eq 'base';
-
-die "strange branch ref $current->{Kind} $current->{Ref},\n".
-    " making new branch with this as dep is unwise\n"
+die "strange branch ref $current->{Ref} is of kind $current->{Kind},\n".
+    " making new patch with this as dep is not supported\n"
     unless ($current->{Kind} eq 'foreign' ||
 	    $current->{Kind} eq 'tip');
 
@@ -39,10 +37,132 @@ if (!defined $spec->{Date}) {
     chomp $spec->{Date} or die $!;
 }
 
+defined $spec->{Nick} or die "no patch nickname specified\n";
+
 length($spec->{Date})==18 or die "partial date specified, not supported\n";
 
-my $newbranch = "$spec->{Email}\@$spec->{Domain}/$spec->{Date}/$spec->{Nick}";
+chdir_toplevel();
+
+run_git_check_nooutput("cannot create new patch with staged file(s)",
+		       qw(diff --cached --name-only HEAD --));
+
+run_git_check_nooutput("cannot create new patch 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.
+#
+my $newpatch = "$spec->{Email}\@$spec->{Domain}/$spec->{Date}/$spec->{Nick}";
+
+$newpatch = run_git_1line(qw(check-ref-format --print), $newpatch);
+
+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", $newpatch;
+
+setup_config();
+
+#----- subroutines for setup
+
+sub create_and_switch ($$) {
+    my ($branchref, $what) = @_;
+    enable_reflog($branchref);
+    run_git(qw(update-ref -m), "tb-create $newpatch $what", $branchref, 'HEAD');
+    run_git(qw(symbolic-ref HEAD), $branchref);
+}
+
+sub stage_meta ($) {
+    my ($file) = @_;
+    run_git(qw(add), ".topbloke/$file");
+}
+
+sub meta_and_stage ($$) {
+    my ($file, $contents) = @_;
+    wf_contents(".topbloke/$file", $contents);
+    stage_meta($file);
+}
+
+sub meta_rm_stage ($) {
+    my ($file) = @_;
+    run_git(qw(rm --ignore-unmatch -q --), ".topbloke/$file");
+}
+
+#----- create the base branch
+
+if (lstat '.topbloke') {
+    -d _ or die;
+} else {
+    mkdir('.topbloke') or die "create .topbloke: $!\n";
+}
+
+my @meta_to_rm;
+
+if ($current->{Kind} eq 'foreign') {
+    check_no_metadata('HEAD');
+} else {
+    foreach_unknown_metadata('HEAD', 
+			     sub { push @meta_to_rm, $_ unless m/^\+/; });
+}
+
+my $baseref = "$baserefs/$newpatch";
+my $currentcommit = run_git_1line(qw(rev-parse), "HEAD");
+create_and_switch($baseref, 'base');
+
+meta_rm_stage('msg');
+meta_and_stage('patch', "$newpatch\n");
+meta_rm_stage('base');
+meta_and_stage('deps', "$current->{DepSpec}\n");
+meta_rm_stage('deleted');
+meta_rm_stage($_) foreach @meta_to_rm;
+
+if ($current->{Kind} eq 'foreign') {
+    meta_and_stage('+included', "");
+    meta_and_stage('+ends', "");
+} else {
+    # we inherit correct contents for +included
+    if ($current->{Kind} eq 'tip') {
+	metafile_process('+ends', undef, sub {
+	    die if m/^\Q$current->{Fullname}\E /;
+        }, sub {
+	    wf($_->[0], "$current->{Fullname} $currentcommit\n");
+        }, undef);
+	stage_meta('+ends');
+    }
+}
+
+run_git(qw(commit -q -m), "tb-create $newpatch base");
+my $basecommit = run_git_1line(qw(rev-parse), "$baseref~0");
+
+#----- create the tip branch
+
+my $tipref = "$tiprefs/$newpatch";
+create_and_switch($tipref, 'tip');
+
+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');
 
-$newbranch = run_git_1line(qw(check-ref-format --print), $newbranch);
+meta_and_stage('base', "$basecommit\n");
+meta_rm_stage('deps');
+depsfile_add_dep('+included',$newpatch);
+stage_meta('+included');
 
-printf "creating %s\n", $newbranch;
+run_git(qw(commit -q -m), "tb-create $newpatch tip");