Split source into several files

Can't believe I have to do this.

1 files changed, 255 insertions, 0 deletions

diff --git a/handle.c b/handle.c
new file mode 100644
index 0000000..ba3cb00
--- /dev/null
+++ b/handle.c
@@ -0,0 +1,255 @@
+/* Copyright (C) 2018  Curtis McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+
+#include "chat.h"
+
+static int color(const char *s) {
+	if (!s) return 0;
+	int x = 0;
+	for (; s[0]; ++s) {
+		x ^= s[0];
+	}
+	x &= 15;
+	return (x == 1) ? 0 : x;
+}
+
+typedef void (*Handler)(char *prefix, char *params);
+
+static char *prift(char **prefix) {
+	return strsep(prefix, "!@");
+}
+
+static char *shift(char **params) {
+	char *rest = *params;
+	if (!rest) errx(EX_PROTOCOL, "unexpected eol");
+	if (rest[0] == ':') {
+		*params = NULL;
+		return &rest[1];
+	}
+	return strsep(params, " ");
+}
+
+static void handlePing(char *prefix, char *params) {
+	(void)prefix;
+	clientFmt("PONG %s\r\n", params);
+}
+
+static void handle432(char *prefix, char *params) {
+	(void)prefix;
+	shift(&params);
+	shift(&params);
+	char *mesg = shift(&params);
+	uiChat("You can't use that name here");
+	uiFmt("Sheriff says, \"%s\"", mesg);
+	uiChat("Type /nick <name> to choose a new one");
+}
+
+static void handle001(char *prefix, char *params) {
+	(void)prefix;
+	char *nick = shift(&params);
+	if (strcmp(nick, chat.nick)) {
+		free(chat.nick);
+		chat.nick = strdup(nick);
+	}
+	clientFmt("JOIN %s\r\n", chat.chan);
+}
+
+static void handleJoin(char *prefix, char *params) {
+	char *nick = prift(&prefix);
+	char *user = prift(&prefix);
+	char *chan = shift(&params);
+	if (!strcmp(nick, chat.nick) && strcmp(user, chat.user)) {
+		free(chat.user);
+		chat.user = strdup(user);
+	}
+	uiFmt(
+		"\3%d%s\3 arrives in \3%d%s\3",
+		color(user), nick, color(chan), chan
+	);
+}
+
+static void handlePart(char *prefix, char *params) {
+	char *nick = prift(&prefix);
+	char *user = prift(&prefix);
+	char *chan = shift(&params);
+	char *mesg = shift(&params);
+	uiFmt(
+		"\3%d%s\3 leaves \3%d%s\3, \"%s\"",
+		color(user), nick, color(chan), chan, mesg
+	);
+}
+
+static void handleQuit(char *prefix, char *params) {
+	char *nick = prift(&prefix);
+	char *user = prift(&prefix);
+	char *mesg = shift(&params);
+	char *quot = (mesg[0] == '"') ? "" : "\"";
+	uiFmt(
+		"\3%d%s\3 leaves, %s%s%s",
+		color(user), nick, quot, mesg, quot
+	);
+}
+
+static void handleKick(char *prefix, char *params) {
+	char *nick = prift(&prefix);
+	char *user = prift(&prefix);
+	char *chan = shift(&params);
+	char *kick = shift(&params);
+	char *mesg = shift(&params);
+	uiFmt(
+		"\3%d%s\3 kicks \3%d%s\3 out of \3%d%s\3, \"%s\"",
+		color(user), nick, color(kick), kick, color(chan), chan, mesg
+	);
+}
+
+static void handle332(char *prefix, char *params) {
+	(void)prefix;
+	shift(&params);
+	char *chan = shift(&params);
+	char *topic = shift(&params);
+	uiFmt(
+		"The sign in \3%d%s\3 reads, \"%s\"",
+		color(chan), chan, topic
+	);
+	uiTopic(topic);
+}
+
+static void handleTopic(char *prefix, char *params) {
+	char *nick = prift(&prefix);
+	char *user = prift(&prefix);
+	char *chan = shift(&params);
+	char *topic = shift(&params);
+	uiFmt(
+		"\3%d%s\3 places a new sign in \3%d%s\3, \"%s\"",
+		color(user), nick, color(chan), chan, topic
+	);
+	uiTopic(topic);
+}
+
+static void handle366(char *prefix, char *params) {
+	(void)prefix;
+	shift(&params);
+	char *chan = shift(&params);
+	clientFmt("WHO %s\r\n", chan);
+}
+
+static char whoBuf[4096];
+static size_t whoLen;
+
+static void handle352(char *prefix, char *params) {
+	(void)prefix;
+	shift(&params);
+	shift(&params);
+	char *user = shift(&params);
+	shift(&params);
+	shift(&params);
+	char *nick = shift(&params);
+	whoLen += snprintf(
+		&whoBuf[whoLen], sizeof(whoBuf) - whoLen,
+		"%s\3%d%s\3",
+		(whoLen ? ", " : ""), color(user), nick
+	);
+}
+
+static void handle315(char *prefix, char *params) {
+	(void)prefix;
+	shift(&params);
+	char *chan = shift(&params);
+	whoLen = 0;
+	uiFmt(
+		"In \3%d%s\3 are %s",
+		color(chan), chan, whoBuf
+	);
+}
+
+static void handleNick(char *prefix, char *params) {
+	char *prev = prift(&prefix);
+	char *user = prift(&prefix);
+	char *next = shift(&params);
+	if (!strcmp(user, chat.user)) {
+		free(chat.nick);
+		chat.nick = strdup(next);
+	}
+	uiFmt(
+		"\3%d%s\3 is now known as \3%d%s\3",
+		color(user), prev, color(user), next
+	);
+}
+
+static void handlePrivmsg(char *prefix, char *params) {
+	char *nick = prift(&prefix);
+	char *user = prift(&prefix);
+	shift(&params);
+	char *mesg = shift(&params);
+	if (mesg[0] == '\1') {
+		strsep(&mesg, " ");
+		uiFmt("* \3%d%s\3 %s", color(user), nick, strsep(&mesg, "\1"));
+	} else {
+		uiFmt("<\3%d%s\3> %s", color(user), nick, mesg);
+	}
+}
+
+static void handleNotice(char *prefix, char *params) {
+	char *nick = prift(&prefix);
+	char *user = prift(&prefix);
+	char *chan = shift(&params);
+	char *mesg = shift(&params);
+	if (strcmp(chat.chan, chan)) return;
+	uiFmt("-\3%d%s\3- %s", color(user), nick, mesg);
+}
+
+static const struct {
+	const char *command;
+	Handler handler;
+} HANDLERS[] = {
+	{ "001", handle001 },
+	{ "315", handle315 },
+	{ "332", handle332 },
+	{ "352", handle352 },
+	{ "366", handle366 },
+	{ "432", handle432 },
+	{ "433", handle432 },
+	{ "JOIN", handleJoin },
+	{ "KICK", handleKick },
+	{ "NICK", handleNick },
+	{ "NOTICE", handleNotice },
+	{ "PART", handlePart },
+	{ "PING", handlePing },
+	{ "PRIVMSG", handlePrivmsg },
+	{ "QUIT", handleQuit },
+	{ "TOPIC", handleTopic },
+};
+static const size_t HANDLERS_LEN = sizeof(HANDLERS) / sizeof(HANDLERS[0]);
+
+void handle(char *line) {
+	char *prefix = NULL;
+	if (line[0] == ':') {
+		prefix = strsep(&line, " ") + 1;
+		if (!line) errx(EX_PROTOCOL, "unexpected eol");
+	}
+	char *command = strsep(&line, " ");
+	for (size_t i = 0; i < HANDLERS_LEN; ++i) {
+		if (strcmp(command, HANDLERS[i].command)) continue;
+		HANDLERS[i].handler(prefix, line);
+		break;
+	}
+}