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/* Copyright (C) 2020 C. McEnroe <june@causal.agency>
*
* 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 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <err.h>
#include <regex.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include "chat.h"
static const char *Pattern = {
"("
"cvs|"
"ftp|"
"git|"
"gopher|"
"http|"
"https|"
"irc|"
"ircs|"
"magnet|"
"sftp|"
"ssh|"
"svn|"
"telnet|"
"vnc"
")"
":[^[:space:]>\"]+"
};
static regex_t Regex;
static void compile(void) {
static bool compiled;
if (compiled) return;
compiled = true;
int error = regcomp(&Regex, Pattern, REG_EXTENDED);
if (!error) return;
char buf[256];
regerror(error, &Regex, buf, sizeof(buf));
errx(EX_SOFTWARE, "regcomp: %s: %s", buf, Pattern);
}
enum { Cap = 32 };
static struct {
size_t ids[Cap];
char *nicks[Cap];
char *urls[Cap];
size_t len;
} ring;
static void push(size_t id, const char *nick, const char *url, size_t len) {
size_t i = ring.len++ % Cap;
free(ring.nicks[i]);
free(ring.urls[i]);
ring.ids[i] = id;
ring.nicks[i] = NULL;
if (nick) {
ring.nicks[i] = strdup(nick);
if (!ring.nicks[i]) err(EX_OSERR, "strdup");
}
ring.urls[i] = strndup(url, len);
if (!ring.urls[i]) err(EX_OSERR, "strndup");
}
void urlScan(size_t id, const char *nick, const char *mesg) {
if (!mesg) return;
compile();
regmatch_t match = {0};
for (const char *ptr = mesg; *ptr; ptr += match.rm_eo) {
if (regexec(&Regex, ptr, 1, &match, 0)) break;
push(id, nick, &ptr[match.rm_so], match.rm_eo - match.rm_so);
}
}
void urlOpenCount(size_t id, size_t count) {
// TODO
}
void urlOpenMatch(size_t id, const char *str) {
// TODO
}
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