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Implement message splitting

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This commit is contained in:
C. McEnroe 2020-03-22 15:13:33 -04:00
parent be4283b8ff
commit 3bb3a11454
1 changed files with 40 additions and 3 deletions
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43
command.c
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@ -14,6 +14,7 @@
* along with this program. If not, see <https://www.gnu.org/licenses/>. * along with this program. If not, see <https://www.gnu.org/licenses/>.
*/ */
#include <assert.h>
#include <ctype.h> #include <ctype.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
@ -52,12 +53,48 @@ static void echoMessage(char *cmd, uint id, char *params) {
handle(msg); handle(msg);
} }
static void splitMessage(char *cmd, uint id, char *params) {
if (!params) return;
// FIXME: Get USERLEN, HOSTLEN from ISUPPORT and assume worst case if
// self.user and self.host are unset?
const char *nick = self.nick;
const char *user = (self.user ? self.user : "*");
const char *host = (self.host ? self.host : "*");
int overhead = snprintf(
NULL, 0, ":%s!%s@%s %s %s :\r\n",
nick, user, host, cmd, idNames[id]
);
assert(overhead > 0 && overhead < 512);
int chunk = 512 - overhead;
if (strlen(params) <= (size_t)chunk) {
echoMessage(cmd, id, params);
return;
}
while (*params) {
int len = 0;
for (int n = 0; len + n <= chunk; len += n) {
n = mblen(&params[len], 1 + strlen(&params[len]));
if (n < 0) {
n = 1;
mblen(NULL, 0);
}
if (!n) break;
}
char ch = params[len];
params[len] = '\0';
echoMessage(cmd, id, params);
params[len] = ch;
params += len;
}
}
static void commandPrivmsg(uint id, char *params) { static void commandPrivmsg(uint id, char *params) {
echoMessage("PRIVMSG", id, params); splitMessage("PRIVMSG", id, params);
} }
static void commandNotice(uint id, char *params) { static void commandNotice(uint id, char *params) {
echoMessage("NOTICE", id, params); splitMessage("NOTICE", id, params);
} }
static void commandMe(uint id, char *params) { static void commandMe(uint id, char *params) {
@ -68,7 +105,7 @@ static void commandMe(uint id, char *params) {
static void commandMsg(uint id, char *params) { static void commandMsg(uint id, char *params) {
id = idFor(strsep(&params, " ")); id = idFor(strsep(&params, " "));
echoMessage("PRIVMSG", id, params); splitMessage("PRIVMSG", id, params);
} }
static void commandJoin(uint id, char *params) { static void commandJoin(uint id, char *params) {