Add fe-cap to show messages for CAP-related events in the UI

Replaces cap.pl

src/fe-common/irc/Makefile.am

@@ -27,6 +27,7 @@ real_sources = \
 	fe-common-irc.c \
 	fe-whois.c \
 	fe-sasl.c \
+	fe-cap.c \
 	irc-completion.c \
 	module-formats.c 
 

src/fe-common/irc/fe-cap.c

@@ -0,0 +1,84 @@
+/*
+    fe-cap.c : irssi
+
+    Copyright (C) 2018 dequis
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "module.h"
+#include "module-formats.h"
+#include "signals.h"
+#include "levels.h"
+#include "misc.h"
+
+#include "irc-servers.h"
+
+#include "printtext.h"
+
+static const struct {
+	const char *command;
+	const int template;
+} fe_cap_messages[] = {
+	{"LS", IRCTXT_CAP_LS},
+	{"ACK", IRCTXT_CAP_ACK},
+	{"NAK", IRCTXT_CAP_NAK},
+	{"LIST", IRCTXT_CAP_LIST},
+	{"NEW", IRCTXT_CAP_NEW},
+	{"DEL", IRCTXT_CAP_DEL},
+};
+
+static void event_cap(IRC_SERVER_REC *server, char *args, char *nick, char *address)
+{
+	int i;
+	char *params, *evt, *list, *star;
+
+	params = event_get_params(args, 4, NULL, &evt, &star, &list);
+
+	if (params == NULL) {
+		return;
+	}
+
+	/* With multiline CAP LS, if the '*' parameter isn't present,
+	 * adjust the parameter pointer to compensate for this */
+	if (strcmp(star, "*") != 0 && list[0] == '\0') {
+		list = star;
+	}
+
+	for (i = 0; i < G_N_ELEMENTS(fe_cap_messages); i++) {
+		if (!g_ascii_strcasecmp(evt, fe_cap_messages[i].command)) {
+			printformat(server, NULL, MSGLEVEL_CRAP, fe_cap_messages[i].template, list);
+		}
+	}
+
+	g_free(params);
+}
+
+static void sig_server_cap_req(IRC_SERVER_REC *server, char *caps)
+{
+	printformat(server, NULL, MSGLEVEL_CRAP, IRCTXT_CAP_REQ, caps);
+}
+
+void fe_cap_init(void)
+{
+	signal_add("event cap", (SIGNAL_FUNC) event_cap);
+	signal_add("server cap req", (SIGNAL_FUNC) sig_server_cap_req);
+}
+
+void fe_cap_deinit(void)
+{
+	signal_remove("event cap", (SIGNAL_FUNC) event_cap);
+	signal_remove("server cap req", (SIGNAL_FUNC) sig_server_cap_req);
+}

src/fe-common/irc/fe-common-irc.c

@@ -72,6 +72,9 @@ void fe_whois_deinit(void);
 void fe_sasl_init(void);
 void fe_sasl_deinit(void);
 
+void fe_cap_init(void);
+void fe_cap_deinit(void);
+
 void irc_completion_init(void);
 void irc_completion_deinit(void);
 
@@ -95,6 +98,7 @@ void fe_common_irc_init(void)
 	fe_netjoin_init();
         fe_whois_init();
 	fe_sasl_init();
+	fe_cap_init();
         irc_completion_init();
 
 	settings_check();
@@ -121,6 +125,7 @@ void fe_common_irc_deinit(void)
 	fe_netjoin_deinit();
         fe_whois_deinit();
 	fe_sasl_deinit();
+	fe_cap_deinit();
         irc_completion_deinit();
 
 	theme_unregister();

src/fe-common/irc/module-formats.c

@@ -46,6 +46,13 @@ FORMAT_REC fecommon_irc_formats[] = {
 	{ "setupserver_footer", "", 0 },
 	{ "sasl_success", "SASL authentication succeeded", 0 },
 	{ "sasl_error", "Cannot authenticate via SASL ($0)", 1, { 0 } },
+	{ "cap_req",  "Capabilities requested: $0", 1, { 0 } },
+	{ "cap_ls",   "Capabilities supported: $0", 1, { 0 } },
+	{ "cap_ack",  "Capabilities acknowledged: $0", 1, { 0 } },
+	{ "cap_nak",  "Capabilities refused: $0", 1, { 0 } },
+	{ "cap_list", "Capabilities currently enabled: $0", 1, { 0 } },
+	{ "cap_new",  "Capabilities now available: $0", 1, { 0 } },
+	{ "cap_del",  "Capabilities removed: $0", 1, { 0 } },
 
 	/* ---- */
 	{ NULL, "Channels", 0 },

src/fe-common/irc/module-formats.h

@@ -24,6 +24,13 @@ enum {
 	IRCTXT_SETUPSERVER_FOOTER,
 	IRCTXT_SASL_SUCCESS,
 	IRCTXT_SASL_ERROR,
+	IRCTXT_CAP_REQ,
+	IRCTXT_CAP_LS,
+	IRCTXT_CAP_ACK,
+	IRCTXT_CAP_NAK,
+	IRCTXT_CAP_LIST,
+	IRCTXT_CAP_NEW,
+	IRCTXT_CAP_DEL,
 
 	IRCTXT_FILL_2,