repobrowse: shorten internal names

We'll still be keeping "repobrowse" for the public API
for use with .psgi files, but shortening the name means
less typing and we may have command-line tools, too.

1 files changed, 109 insertions, 0 deletions

diff --git a/lib/PublicInbox/RepoGitSummary.pm b/lib/PublicInbox/RepoGitSummary.pm
new file mode 100644
index 00000000..e9e1458b
--- /dev/null
+++ b/lib/PublicInbox/RepoGitSummary.pm
@@ -0,0 +1,109 @@
+# Copyright (C) 2016 all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+
+# The main summary/landing page of a git repository viewer
+package PublicInbox::RepoGitSummary;
+use strict;
+use warnings;
+use PublicInbox::Hval qw(utf8_html);
+use base qw(PublicInbox::RepoBase);
+use PublicInbox::Qspawn;
+
+sub call_git_summary {
+        my ($self, $req) = @_;
+        my $git = $req->{repo_info}->{git};
+        my $env = $req->{env};
+
+        # n.b. we would use %(HEAD) in for-each-ref --format if we could
+        # rely on git 1.9.0+, but it's too soon for that in early 2017...
+        my $cmd = $git->cmd(qw(symbolic-ref HEAD));
+        my $rdr = { 2 => $git->err_begin };
+        my $qsp = PublicInbox::Qspawn->new($cmd, undef, $rdr);
+        sub {
+                my ($res) = @_; # Plack streaming callback
+                $qsp->psgi_qx($env, undef, sub {
+                        chomp(my $head_ref = ${$_[0]});
+                        for_each_ref($self, $req, $res, $head_ref);
+                });
+        }
+}
+
+use constant EACH_REF_FMT => '--format=' .
+                join(' ', map { "%($_)" }
+                qw(refname objecttype objectname creatordate:short subject));
+
+sub for_each_ref {
+        my ($self, $req, $res, $head_ref) = @_;
+        my $count = 10; # TODO: configurable
+        my $fh;
+        my $repo_info = $req->{repo_info};
+        my $git = $repo_info->{git};
+        my $refs = $git->popen(qw(for-each-ref --sort=-creatordate),
+                                EACH_REF_FMT, "--count=$count",
+                                qw(refs/heads/ refs/tags/));
+        $fh = $res->([200, ['Content-Type'=>'text/html; charset=UTF-8']]);
+        # ref names are unpredictable in length and requires tables :<
+        $fh->write($self->html_start($req,
+                                "$repo_info->{repo}: overview") .
+                        '</pre><table>');
+
+        my $rel = $req->{relcmd};
+        while (<$refs>) {
+                my ($ref, $type, $hex, $date, $s) = split(' ', $_, 5);
+                my $x = $ref eq $head_ref ? ' (HEAD)' : '';
+                $ref =~ s!\Arefs/(?:heads|tags)/!!;
+                $ref = PublicInbox::Hval->utf8($ref);
+                my $h = $ref->as_html;
+                $ref = $ref->as_href;
+                my $sref;
+                if ($type eq 'tag') {
+                        $h = "<b>$h</b>";
+                        $sref = $ref = $rel . 'tag?h=' . $ref;
+                } elsif ($type eq 'commit') {
+                        $sref = $rel . 'commit?h=' . $ref;
+                        $ref = $rel . 'log?h=' . $ref;
+                } else {
+                        # no point in wasting code to support tagged
+                        # trees/blobs...
+                        next;
+                }
+                chomp $s;
+                $fh->write(qq(<tr><td><tt><a\nhref="$ref">$h</a>$x</tt></td>) .
+                        qq(<td><tt>$date <a\nhref="$sref">) . utf8_html($s) .
+                        '</a></tt></td></tr>');
+
+        }
+        $fh->write('</table>');
+
+        # some people will use README.md or even README.sh here...
+        my $readme = $repo_info->{readme};
+        defined $readme or $readme = [ 'README', 'README.md' ];
+        $readme = [ $readme ] if (ref($readme) ne 'ARRAY');
+        foreach my $r (@$readme) {
+                my $doc = $git->cat_file('HEAD:'.$r);
+                defined $doc or next;
+                $fh->write('<pre>' . readme_path_links($rel, $r) .
+                        " (HEAD)\n\n" . utf8_html($$doc) . '</pre>');
+        }
+        $fh->write('</body></html>');
+        $fh->close;
+}
+
+sub readme_path_links {
+        my ($rel, $readme) = @_;
+        my @path = split(m!/+!, $readme);
+
+        my $s = "tree <a\nhref=\"${rel}tree\">root</a>/";
+        my @t;
+        $s .= join('/', (map {
+                push @t, $_;
+                my $e = PublicInbox::Hval->utf8($_, join('/', @t));
+                my $ep = $e->as_path;
+                my $eh = $e->as_html;
+                $e = "<a\nhref=\"${rel}tree/$ep\">$eh</a>";
+                # bold the last one
+                scalar(@t) == scalar(@path) ? "<b>$e</b>" : $e;
+        } @path));
+}
+
+1;