xC/xP: turn the action asterisk into a rendition

It tends to looks inconsistent without.

README.adoc

@@ -23,15 +23,16 @@ command aliases, SOCKS proxying, SASL EXTERNAL authentication using TLS client
 certificates, a remote relay interface, or basic support for Lua scripting.
 As a unique bonus, you can launch a full text editor from within.
 
-xF
---
-The X11 frontend for 'xC', making use of its networked relay interface.
-It's currently in development, and is hidden behind a CMake option.
-
 xP
 --
 The web frontend for 'xC', making use of its networked relay interface.
-It's currently rather elementary, and can be built from within its directory.
+So far it's quite basic, yet usable.  Build it using `make` in its directory,
+and run it from within the _public_ subdirectory.
+
+xF
+--
+The X11 frontend for 'xC', making use of its networked relay interface.
+It's currently in development, and hidden behind a CMake option.
 
 xD
 --
@@ -72,15 +73,15 @@ Building
 Build-only dependencies:
  CMake, pkg-config, asciidoctor or asciidoc, awk, liberty (included) +
 Common runtime dependencies: openssl +
-Additionally for 'xC': curses, libffi, +
- readline >= 6.0 or libedit >= 2013-07-12, lua >= 5.3 (optional) +
+Additionally for 'xC': curses, libffi, readline >= 6.0 or libedit >= 2013-07-12,
+ lua >= 5.3 (optional) +
 Additionally for 'xF': x11, xft
 
  $ git clone --recursive https://git.janouch.name/p/xK.git
  $ mkdir xK/build
  $ cd xK/build
  $ cmake .. -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=RelWithDebInfo \
-            -DWANT_READLINE=ON -DWANT_LIBEDIT=OFF -DWANT_LUA=ON
+            -DWANT_READLINE=ON -DWANT_LIBEDIT=OFF -DWITH_LUA=ON
  $ make
 
 To install the application, you can do either the usual:

xC-proto

@@ -69,6 +69,7 @@ struct EventMessage {
 			ERROR,
 			JOIN,
 			PART,
+			ACTION,
 		} rendition;
 		// Unix timestamp in seconds.
 		u64 when;

xC.c

@@ -1480,7 +1480,7 @@ struct formatter_item
 {
 	enum formatter_item_type type : 16; ///< Type of this item
 	int attribute                 : 16; ///< Attribute ID or a TEXT_* mask
-	int color;                          ///< Colour
+	int color;                          ///< Colour ([256 << 16] | 16)
 	char *text;                         ///< String
 };
 
@@ -1536,6 +1536,7 @@ enum buffer_line_rendition
 	BUFFER_LINE_ERROR,                  ///< Error message
 	BUFFER_LINE_JOIN,                   ///< Join arrow
 	BUFFER_LINE_PART,                   ///< Part arrow
+	BUFFER_LINE_ACTION,                 ///< Highlighted asterisk
 };
 
 struct buffer_line
@@ -3114,6 +3115,9 @@ relay_prepare_buffer_line (struct app_context *ctx, struct buffer *buffer,
 	union relay_item_data *p = e->items = xcalloc (len * 6, sizeof *e->items);
 	for (struct formatter_item *i = line->items; len--; i++)
 	{
+		// XXX: See attr_printer_decode_color(), this is a footgun.
+		int16_t c16  = i->color;
+		int16_t c256 = i->color >> 16;
 		switch (i->type)
 		{
 		case FORMATTER_ITEM_TEXT:
@@ -3125,11 +3129,11 @@ relay_prepare_buffer_line (struct app_context *ctx, struct buffer *buffer,
 			(p++)->kind = RELAY_ITEM_RESET;
 			break;
 		case FORMATTER_ITEM_FG_COLOR:
-			p->fg_color.color = i->color;
+			p->fg_color.color = c256 <= 0 ? c16 : c256;
 			(p++)->kind = RELAY_ITEM_FG_COLOR;
 			break;
 		case FORMATTER_ITEM_BG_COLOR:
-			p->bg_color.color = i->color;
+			p->bg_color.color = c256 <= 0 ? c16 : c256;
 			(p++)->kind = RELAY_ITEM_BG_COLOR;
 			break;
 		case FORMATTER_ITEM_SIMPLE:
@@ -4475,6 +4479,7 @@ buffer_line_flush (struct buffer_line *line, struct formatter *f, FILE *output,
 	case BUFFER_LINE_ERROR:   formatter_add (f, "#a=!=#r ", ATTR_ERROR);  break;
 	case BUFFER_LINE_JOIN:    formatter_add (f, "#a-->#r ", ATTR_JOIN);   break;
 	case BUFFER_LINE_PART:    formatter_add (f, "#a<--#r ", ATTR_PART);   break;
+	case BUFFER_LINE_ACTION:  formatter_add (f, " #a*#r  ", ATTR_ACTION); break;
 	}
 
 	for (struct formatter_item *iter = line->items; iter->type; iter++)
@@ -4691,16 +4696,16 @@ log_full (struct app_context *ctx, struct server *s, struct buffer *buffer,
 #define log_outcoming_privmsg(s, buffer, prefixes, who, text)                  \
 	log_server ((s), (buffer), 0, 0, "<#s#n> #m", (prefixes), (who), (text))
 #define log_outcoming_action(s, buffer, who, text)                             \
-	log_server ((s), (buffer), 0, 0, " #a*#r  #n #m", \
-		ATTR_ACTION, (who), (text))
+	log_server ((s), (buffer), 0, BUFFER_LINE_ACTION, "#n #m", (who), (text))
 
 #define log_outcoming_orphan_notice(s, target, text)                           \
 	log_server_status ((s), (s)->buffer, "Notice -> #n: #m", (target), (text))
 #define log_outcoming_orphan_privmsg(s, target, text)                          \
-	log_server_status ((s), (s)->buffer, "MSG(#n): #m", (target), (text))
+	log_server ((s), (s)->buffer, 0, BUFFER_LINE_STATUS,                       \
+		"MSG(#n): #m", (target), (text))
 #define log_outcoming_orphan_action(s, target, text)                           \
-	log_server_status ((s), (s)->buffer, "MSG(#n):  #a*#r  #m", (target),      \
-		ATTR_ACTION, (text))
+	log_server ((s), (s)->buffer, 0, BUFFER_LINE_ACTION,                       \
+		"MSG(#n): #m", (target), (text))
 
 #define log_ctcp_query(s, target, tag)                                         \
 	log_server_status ((s), (s)->buffer, "CTCP query to #S: #S", target, tag)
@@ -8763,6 +8768,7 @@ irc_process_numeric (struct server *s,
 		if (msg->params.len == 2)
 			irc_try_parse_welcome_for_userhost (s, msg->params.vector[1]);
 		break;
+	case IRC_RPL_MOTDSTART:
 	case IRC_RPL_MOTD:
 		if (copy.len)
 			irc_adjust_motd (&copy.vector[0]);

xP/go.mod

@@ -1,4 +1,4 @@
-module janouch.name/xK
+module janouch.name/xK/xP
 
 go 1.18
 

xP/public/xP.css

@@ -79,6 +79,9 @@ body {
 .mark.part {
 	color: red;
 }
+.mark.action {
+	color: darkred;
+}
 .content {
 	padding: .1rem .3rem;
 	white-space: pre-wrap;

xP/public/xP.js

@@ -1,3 +1,40 @@
+// Copyright (c) 2022, Přemysl Eric Janouch <p@janouch.name>
+// SPDX-License-Identifier: 0BSD
+
+// --- Colours -----------------------------------------------------------------
+
+let palette = [
+	'#000', '#800', '#080', '#880', '#008', '#808', '#088', '#ccc',
+	'#888', '#f00', '#0f0', '#ff0', '#00f', '#f0f', '#0ff', '#fff',
+]
+palette.length = 256
+for (let i = 0; i < 216; i++) {
+	let r = i / 36 >> 0, g = (i / 6 >> 0) % 6, b = i % 6
+	r = !r ? '00' : (55 + 40 * r).toString(16)
+	g = !g ? '00' : (55 + 40 * g).toString(16)
+	b = !b ? '00' : (55 + 40 * b).toString(16)
+	palette[16 + i] = `#${r}${g}${b}`
+}
+for (let i = 0; i < 24; i++) {
+	let g = ('0' + (8 + i * 10).toString(16)).slice(-2)
+	palette[232 + i] = `#${g}${g}${g}`
+}
+
+function applyColor(fg, bg, inverse) {
+	if (inverse)
+		[fg, bg] = [bg >= 0 ? bg : 15, fg >= 0 ? fg : 0]
+
+	let style = ''
+	if (fg >= 0)
+		style += `color: ${palette[fg]};`
+	if (bg >= 0)
+		style += `background-color: ${palette[bg]};`
+	if (style)
+		return style
+}
+
+// ---- Event processing -------------------------------------------------------
+
 // TODO: Probably reset state on disconnect, and indicate to user.
 let socket = new WebSocket(proxy)
 
@@ -59,6 +96,8 @@ socket.onmessage = function(event) {
 	m.redraw()
 }
 
+// ---- UI ---------------------------------------------------------------------
+
 let BufferList = {
 	view: vnode => {
 		let items = []
@@ -86,6 +125,7 @@ let Content = {
 		case 'Error':  content.push(m('span.mark.error',  {}, '⚠')); break
 		case 'Join':   content.push(m('span.mark.join',   {}, '→')); break
 		case 'Part':   content.push(m('span.mark.part',   {}, '←')); break
+		case 'Action': content.push(m('span.mark.action', {}, '✶')); break
 		}
 
 		let classes = new Set()
@@ -95,22 +135,33 @@ let Content = {
 			else
 				classes.add(c)
 		}
+		let fg = -1, bg = -1, inverse = false
 		line.items.forEach(item => {
-			// TODO: Colours.
 			switch (item.kind) {
 			case 'Text':
 				// TODO: Detect and transform links.
 				content.push(m('span', {
 					class: Array.from(classes.keys()).join(' '),
+					style: applyColor(fg, bg, inverse),
 				}, item.text))
 				break
 			case 'Reset':
 				classes.clear()
+				fg = bg = -1
+				inverse = false
+				break
+			case 'FgColor':
+				fg = item.color
+				break
+			case 'BgColor':
+				bg = item.color
+				break
+			case 'FlipInverse':
+				inverse = !inverse
 				break
 			case 'FlipBold':       flip('b'); break
 			case 'FlipItalic':     flip('i'); break
 			case 'FlipUnderline':  flip('u'); break
-			case 'FlipInverse':    flip('i'); break
 			case 'FlipCrossedOut': flip('s'); break
 			case 'FlipMonospace':  flip('m'); break
 			}

xP/xP.go

@@ -1,3 +1,6 @@
+// Copyright (c) 2022, Přemysl Eric Janouch <p@janouch.name>
+// SPDX-License-Identifier: 0BSD
+
 package main
 
 import (