[PATCH 1/3] www_stream: coderepo-specific top bar

[Eric Wong <e@80x24.org>]

It gets nasty when multiple, non-ALL lists point to the same
coderepo, but I guess ALL exists for that.  Only lightly-tested
with various PSGI prefix mounts, but it seems to be working...
---
 lib/PublicInbox/ViewVCS.pm     | 23 ++++++++++-----
 lib/PublicInbox/WwwCoderepo.pm |  9 +-----
 lib/PublicInbox/WwwStream.pm   | 53 +++++++++++++++++++++++++++++++++-
 3 files changed, 68 insertions(+), 17 deletions(-)

diff --git a/lib/PublicInbox/ViewVCS.pm b/lib/PublicInbox/ViewVCS.pm
index 6b641b32..7ac719bc 100644
--- a/lib/PublicInbox/ViewVCS.pm
+++ b/lib/PublicInbox/ViewVCS.pm
@@ -156,10 +156,14 @@ sub show_commit_start { # ->psgi_qx callback
 sub ibx_url_for {
 	my ($ctx) = @_;
 	$ctx->{ibx} and return; # fall back to $upfx
-	$ctx->{git} or return;
+	$ctx->{git} or die 'BUG: no {git}';
 	if (my $ALL = $ctx->{www}->{pi_cfg}->ALL) {
-		return $ALL->base_url // $ALL->base_url($ctx->{env});
-	} elsif (my $ibx_names = $ctx->{git}->{ibx_names}) {
+		if (defined(my $u = $ALL->base_url($ctx->{env}))) {
+			return wantarray ? ($u) : $u;
+		}
+	}
+	my @ret;
+	if (my $ibx_names = $ctx->{git}->{ibx_names}) {
 		my $by_name = $ctx->{www}->{pi_cfg}->{-by_name};
 		for my $name (@$ibx_names) {
 			my $ibx = $by_name->{$name} // do {
@@ -167,12 +171,13 @@ sub ibx_url_for {
 				next;
 			};
 			$ibx->isrch // next;
-			return defined($ibx->{url}) ?
-				prurl($ctx->{env}, $ibx->{url}) :
-				"../../../$name/";
+			my $u = defined($ibx->{url}) ?
+				prurl($ctx->{env}, $ibx->{url}) : $name;
+			$u .= '/' if substr($u, -1) ne '/';
+			push @ret, $u;
 		}
 	}
-	undef;
+	wantarray ? (@ret) : $ret[0];
 }
 
 sub cmt_finalize {
@@ -253,8 +258,10 @@ EOM
 			my $ibx_url = ibx_url_for($ctx);
 			my $alt;
 			if (defined $ibx_url) {
+				$alt = " `$ibx_url'";
+				$ibx_url =~ m!://! or
+					substr($ibx_url, 0, 0, '../../../');
 				$ibx_url = ascii_html($ibx_url);
-				$alt = ' '.$ibx_url;
 			} else {
 				$ibx_url = $upfx;
 				$alt = '';
diff --git a/lib/PublicInbox/WwwCoderepo.pm b/lib/PublicInbox/WwwCoderepo.pm
index e89a6456..2fba0cd0 100644
--- a/lib/PublicInbox/WwwCoderepo.pm
+++ b/lib/PublicInbox/WwwCoderepo.pm
@@ -79,14 +79,7 @@ sub summary_finish {
 		$tip_html .= ' '.ascii_html($tip).' --';
 	}
 	print $zfh <<EOM;
-<pre>
-<a
-href='#readme'>about</a> <a
-href='#heads'>heads</a> <a
-href='#tags'>tags</a>
-
-<a
-id=log>\$</a> git log --pretty=format:'%h %s (%cs)%d'$tip_html
+<pre><a id=log>\$</a> git log --pretty=format:'%h %s (%cs)%d'$tip_html
 EOM
 	for (@r) {
 		my $d; # decorations
diff --git a/lib/PublicInbox/WwwStream.pm b/lib/PublicInbox/WwwStream.pm
index 59edad5d..8c40096a 100644
--- a/lib/PublicInbox/WwwStream.pm
+++ b/lib/PublicInbox/WwwStream.pm
@@ -38,9 +38,60 @@ sub async_eml { # for async_blob_cb
 	$ctx->write($ctx->{cb}->($ctx, $eml));
 }
 
+sub html_repo_top ($) {
+	my ($ctx) = @_;
+	my $git = $ctx->{git};
+	my $desc = ascii_html($git->description);
+	my $title = delete($ctx->{-title_html}) // $desc;
+	my $upfx = $ctx->{-upfx} // '';
+	my $atom = $ctx->{-atom} // (substr($upfx, -1) eq '/' ?
+					"${upfx}atom/" : "$upfx/atom/");
+	my $top = ascii_html($git->{nick});
+	$top = qq(<a\nhref="$upfx">$top</a>) if length($upfx);
+	$top .= <<EOM;
+  <a href='$upfx#readme'>about</a> / <a
+href='$upfx#heads'>heads</a> / <a
+href='$upfx#tags'>tags</a>
+<b>$desc</b>
+EOM
+	my @url = PublicInbox::ViewVCS::ibx_url_for($ctx);
+	if (@url) {
+		$ctx->{-has_srch} = 1;
+		my $base_url = base_url($ctx);
+		my ($pfx, $sfx) = ($base_url =~ m!\A(https?://[^/]+/)(.*)\z!i);
+		my $iupfx = '../' x (($sfx =~ tr!/!/!) + 1);
+		$pfx = ascii_html($pfx);
+		$pfx = qr/\A\Q$pfx\E/i;
+		my $tmp = $top;
+		$top = '';
+		my ($s, $u, $same_host);
+		my $q_val = delete($ctx->{-q_value_html}) // '';
+		$q_val = qq(\nvalue="$q_val") if $q_val ne '';
+		for (@url) {
+			$u = $s = ascii_html($_);
+			substr($u, 0, 0, $iupfx) if $u !~ m!://!;
+			$s =~ s!$pfx!!;
+			$s =~ s!/\z!!;
+			$top .= qq{<form\naction="$u"><pre>$tmp} .
+				qq{<input\nname=q type=text$q_val />} .
+				qq{<input type=submit\n} .
+				qq{value="search mail in `$s&#39;"/>} .
+				q{</pre></form>};
+			$tmp = '';
+		}
+	} else {
+		$top = "<pre>$top</pre>";
+	}
+	"<html><head><title>$title</title>" .
+		qq(<link\nrel=alternate\ntitle="Atom feed"\n).
+		qq(href="$atom"\ntype="application/atom+xml"/>) .
+		$ctx->{www}->style($upfx) .
+		'</head><body>'.$top;
+}
+
 sub html_top ($) {
 	my ($ctx) = @_;
-	my $ibx = $ctx->{ibx} // $ctx->{git};
+	my $ibx = $ctx->{ibx} // return html_repo_top($ctx);
 	my $desc = ascii_html($ibx->description);
 	my $title = delete($ctx->{-title_html}) // $desc;
 	my $upfx = $ctx->{-upfx} || '';