From 8b8577f91109e76d12fcfa55a2e7388f54a41be6 Mon Sep 17 00:00:00 2001
From: Eric Wong <e@80x24.org>
Date: Tue, 5 Feb 2019 05:28:03 +0000
Subject: wwwtext: inline sample CSS and use highlight

For user documentation regarding CSS; showing users the sample
CSS with comments is probably more helpful than having
standalone documentation on CSS classes.
---
 lib/PublicInbox/UserContent.pm | 16 +++++++++-------
 lib/PublicInbox/WwwText.pm     | 35 +++++++++++++++++------------------
 2 files changed, 26 insertions(+), 25 deletions(-)

(limited to 'lib')

diff --git a/lib/PublicInbox/UserContent.pm b/lib/PublicInbox/UserContent.pm
index df0429c3..468e6cf1 100644
--- a/lib/PublicInbox/UserContent.pm
+++ b/lib/PublicInbox/UserContent.pm
@@ -38,9 +38,9 @@ sub CSS () {
 	*.hunk { color:#c93 }
 
 	/*
-	 * highlight 3.x colors (tested 3.18)
-	 * this doesn't use most of the colors available (I find too many
-	 * colors overwhelming).  So the #ccc default is commented out.
+	 * highlight 3.x colors (tested 3.18) for displaying blobs.
+	 * This doesn't use most of the colors available (I find too many
+	 * colors overwhelming), so the #ccc default is commented out.
 	 */
 	.hl.num { color:#f30 } /* number */
 	.hl.esc { color:#f0f } /* escape character */
@@ -48,10 +48,12 @@ sub CSS () {
 	.hl.ppc { color:#f0f } /* preprocessor */
 	.hl.pps { color:#f30 } /* preprocessor string */
 	.hl.slc { color:#09f } /* single-line comment */
-	.hl.com { color:#09f }
-	/* .hl.opt { color:#ccc } */
-	/* .hl.ipl { color:#ccc } */
-	/* .hl.lin { color:#ccc } */
+	.hl.com { color:#09f } /* multi-line comment */
+	/* .hl.opt { color:#ccc } */ /* operator */
+	/* .hl.ipl { color:#ccc } */ /* interpolation */
+	/* .hl.lin { color:#ccc } */ /* line-number (unused by public-inbox) */
+
+	/* keyword groups kw[a-z] */
 	.hl.kwa { color:#ff0 }
 	.hl.kwb { color:#0f0 }
 	.hl.kwc { color:#ff0 }
diff --git a/lib/PublicInbox/WwwText.pm b/lib/PublicInbox/WwwText.pm
index d3413ad7..adadc37a 100644
--- a/lib/PublicInbox/WwwText.pm
+++ b/lib/PublicInbox/WwwText.pm
@@ -10,6 +10,10 @@ use PublicInbox::WwwStream;
 use PublicInbox::Hval qw(ascii_html);
 our $QP_URL = 'https://xapian.org/docs/queryparser.html';
 our $WIKI_URL = 'https://en.wikipedia.org/wiki';
+my $hl = eval {
+	require PublicInbox::HlMod;
+	PublicInbox::HlMod->new
+};
 
 # /$INBOX/_/text/$KEY/ # KEY may contain slashes
 # For now, "help" is the only supported $KEY
@@ -61,7 +65,13 @@ sub get_text {
 
 sub _do_linkify {
 	my $l = PublicInbox::Linkify->new;
-	$_[0] = $l->linkify_2(ascii_html($l->linkify_1($_[0])));
+	$l->linkify_1($_[0]);
+	if ($hl) {
+		$hl->do_hl_text(\($_[0]));
+	} else {
+		$_[0] = ascii_html($_[0]);
+	}
+	$_[0] = $l->linkify_2($_[0]);
 }
 
 sub _srch_prefix ($$) {
@@ -91,7 +101,8 @@ sub _srch_prefix ($$) {
 sub _colors_help ($$) {
 	my ($ctx, $txt) = @_;
 	my $ibx = $ctx->{-inbox};
-	my $base_url = $ibx->base_url($ctx->{env});
+	my $env = $ctx->{env};
+	my $base_url = $ibx->base_url($env);
 	$$txt .= "color customization for $base_url\n";
 	$$txt .= <<EOF;
 
@@ -104,23 +115,11 @@ to control the colors they see:
 
 	${base_url}userContent.css
 
-CSS classes
------------
-
-	   span.q - quoted text in email messages
-
-For diff highlighting, we try to match class names with those
-used by cgit: https://git.zx2c4.com/cgit/
-
-	 span.add - diff post-image lines
-
-	 span.del - diff pre-image lines
-
-	span.head - diff header (metainformation)
-
-	span.hunk - diff hunk-header
-
+CSS sample
+----------
+```css
 EOF
+	$$txt .= PublicInbox::UserContent::sample($ibx, $env) . "```\n";
 }
 
 sub _default_text ($$$) {
-- 
cgit v1.2.3-24-ge0c7