diff options
Diffstat (limited to 'url.c')
-rw-r--r-- | url.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/url.c b/url.c new file mode 100644 index 0000000..7790461 --- /dev/null +++ b/url.c @@ -0,0 +1,96 @@ +/* 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 +} |