From cdb1d8198269ab5efc676fa30b7f55dcb9a28de3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C5=99emysl=20Janouch?= <p.janouch@gmail.com>
Date: Mon, 27 Apr 2015 22:40:33 +0200
Subject: [PATCH] degesch: detect highlights and display differently

---
 degesch.c | 73 +++++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 65 insertions(+), 8 deletions(-)

diff --git a/degesch.c b/degesch.c
index a3dd2b6..f6827ed 100644
--- a/degesch.c
+++ b/degesch.c
@@ -29,6 +29,7 @@
 
 #define ATTR_EXTERNAL  "attr_external"
 #define ATTR_TIMESTAMP "attr_timestamp"
+#define ATTR_HIGHLIGHT "attr_highlight"
 #define ATTR_ACTION    "attr_action"
 #define ATTR_JOIN      "attr_join"
 #define ATTR_PART      "attr_part"
@@ -95,6 +96,7 @@ static struct config_item g_config_table[] =
 
 	{ ATTR_EXTERNAL,     NULL,    "Terminal attributes for external lines"   },
 	{ ATTR_TIMESTAMP,    NULL,    "Terminal attributes for timestamps"       },
+	{ ATTR_HIGHLIGHT,    NULL,    "Terminal attributes for highlights"       },
 	{ ATTR_ACTION,       NULL,    "Terminal attributes for user actions"     },
 	{ ATTR_JOIN,         NULL,    "Terminal attributes for joins"            },
 	{ ATTR_PART,         NULL,    "Terminal attributes for parts"            },
@@ -789,6 +791,13 @@ init_colors (struct app_context *ctx)
 	INIT_ATTR (ATTR_JOIN,      g_terminal.color_set_fg[2], "\x1b[32m");
 	INIT_ATTR (ATTR_PART,      g_terminal.color_set_fg[1], "\x1b[31m");
 
+	char *highlight = xstrdup_printf ("%s%s%s",
+		g_terminal.color_set_fg[3],
+		g_terminal.color_set_bg[5],
+		enter_bold_mode);
+	INIT_ATTR (ATTR_HIGHLIGHT, highlight,                  "\x1b[33;37;1m");
+	free (highlight);
+
 #undef INIT_ATTR
 
 	switch (ctx->color_mode)
@@ -1231,16 +1240,26 @@ buffer_line_display (struct app_context *ctx,
 	switch (line->type)
 	{
 	case BUFFER_LINE_PRIVMSG:
-		formatter_add (&f, "<#c#s#r> #s", nick_color, nick, a->text);
+		if (line->flags & BUFFER_LINE_HIGHLIGHT)
+			formatter_add (&f, "#a<#s>#r #s", ATTR_HIGHLIGHT, nick, a->text);
+		else
+			formatter_add (&f, "<#c#s#r> #s", nick_color, nick, a->text);
 		break;
 	case BUFFER_LINE_ACTION:
-		formatter_add (&f, " #a*#r  ", ATTR_ACTION);
+		if (line->flags & BUFFER_LINE_HIGHLIGHT)
+			formatter_add (&f, " #a*#r  ", ATTR_HIGHLIGHT);
+		else
+			formatter_add (&f, " #a*#r  ", ATTR_ACTION);
 		formatter_add (&f, "#c#s#r #s", nick_color, nick, a->text);
 		break;
 	case BUFFER_LINE_NOTICE:
 		formatter_add (&f, " -  ");
-		formatter_add (&f, "#s(#c#s#r): #s",
-			"Notice", nick_color, nick, a->text);
+		if (line->flags & BUFFER_LINE_HIGHLIGHT)
+			formatter_add (&f, "#a#s(#s)#r: #s",
+				ATTR_HIGHLIGHT, "Notice", nick, a->text);
+		else
+			formatter_add (&f, "#s(#c#s#r): #s",
+				"Notice", nick_color, nick, a->text);
 		break;
 	case BUFFER_LINE_JOIN:
 		formatter_add (&f, "#a-->#r ", ATTR_JOIN);
@@ -2441,6 +2460,38 @@ irc_get_buffer_for_message (struct app_context *ctx,
 	return buffer;
 }
 
+static bool
+irc_is_highlight (struct app_context *ctx, const char *message)
+{
+	// Well, this is rather crude but it should make most users happy.
+	// Ideally we could do this at least in proper Unicode.
+	char *copy = xstrdup (message);
+	for (char *p = copy; *p; p++)
+		*p = irc_tolower (*p);
+
+	char *nick = xstrdup (ctx->irc_user->nickname);
+	for (char *p = nick; *p; p++)
+		*p = irc_tolower (*p);
+
+	// Special characters allowed in nicknames by RFC 2812: []\`_^{|} and -
+	// Also excluded from the ASCII: common user channel prefixes: +%@&~
+	const char *delimiters = ",.;:!?()<>/=#$* \t\r\n\v\f\"'";
+
+	bool result = false;
+	char *save = NULL;
+	for (char *token = strtok_r (copy, delimiters, &save);
+		token; token = strtok_r (NULL, delimiters, &save))
+		if (!strcmp (token, nick))
+		{
+			result = true;
+			break;
+		}
+
+	free (copy);
+	free (nick);
+	return result;
+}
+
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 
 static void
@@ -2651,8 +2702,11 @@ irc_handle_notice_text (struct app_context *ctx,
 
 	if (buffer)
 	{
-		// TODO: highlights
-		buffer_send (ctx, buffer, BUFFER_LINE_NOTICE, 0,
+		// TODO: some more obvious indication of highlights
+		int flags = irc_is_highlight (ctx, text->str)
+			? BUFFER_LINE_HIGHLIGHT
+			: 0;
+		buffer_send (ctx, buffer, BUFFER_LINE_NOTICE, flags,
 			.who  = irc_to_utf8 (ctx, msg->prefix),
 			.text = irc_to_utf8 (ctx, text->str));
 	}
@@ -2812,11 +2866,14 @@ irc_handle_privmsg_text (struct app_context *ctx,
 
 	if (buffer)
 	{
-		// TODO: highlights
+		// TODO: some more obvious indication of highlights
+		int flags = irc_is_highlight (ctx, text->str)
+			? BUFFER_LINE_HIGHLIGHT
+			: 0;
 		enum buffer_line_type type = is_action
 			? BUFFER_LINE_ACTION
 			: BUFFER_LINE_PRIVMSG;
-		buffer_send (ctx, buffer, type, 0,
+		buffer_send (ctx, buffer, type, flags,
 			.who  = irc_to_utf8 (ctx, msg->prefix),
 			.text = irc_to_utf8 (ctx, text->str));
 	}