128 lines
2.9 KiB
C
128 lines
2.9 KiB
C
/*
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* This file is part of uIRC. (https://git.redxen.eu/caskd/uIRC)
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* Copyright (c) 2019-2021 Alex-David Denes
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*
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* uIRC is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* uIRC is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with uIRC. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "uirc/assembler.h" // uirc_assembler_*
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#include "uirc/error.h" // uirc_errno
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#include "uirc/type.h" // IRC_Message IRC_Tag IRC_User
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#include <assert.h> // assert()
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#include <stdio.h> // NULL, snprintf()
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#include <sys/types.h> // size_t
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ssize_t
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uirc_assembler_message(char* buf, const IRC_Message* m, size_t len)
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{
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assert(buf != NULL);
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assert(m != NULL);
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const char* const sv = buf;
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#ifdef UIRC_FEATURE_IRCV3
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if (m->tag_list != NULL) {
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if (len > 1) {
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*(buf++) = '@';
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len--;
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} else {
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uirc_errno = UIRC_ERR_BUFSIZ;
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return -1;
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}
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ssize_t ret;
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if ((ret = uirc_assembler_tag_list(buf, m->tag_list, len)) >= 0) {
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buf += (size_t) ret;
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len -= (size_t) ret;
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} else
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return ret;
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if (len > 1) {
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*(buf++) = ' ';
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len--;
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} else {
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uirc_errno = UIRC_ERR_BUFSIZ;
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return -1;
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}
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}
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assert(sv <= buf);
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#endif /* UIRC_FEATURE_IRCV3 */
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if (m->source != NULL && (m->source->nick != NULL || m->source->host != NULL)) {
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if (len > 1) {
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*(buf++) = ':';
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len--;
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} else {
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uirc_errno = UIRC_ERR_BUFSIZ;
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return -1;
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}
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ssize_t ret;
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if ((ret = uirc_assembler_user(buf, m->source, len)) >= 0) {
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buf += (size_t) ret;
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len -= (size_t) ret;
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} else
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return ret;
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if (len > 1) {
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*(buf++) = ' ';
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len--;
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} else {
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uirc_errno = UIRC_ERR_BUFSIZ;
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return -1;
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}
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}
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assert(sv <= buf);
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if (m->command != NULL) {
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int ret;
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if ((ret = snprintf(buf, len, "%s", m->command)) >= 0) {
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buf += (size_t) ret;
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len -= (size_t) ret;
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} else {
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uirc_errno = UIRC_ERR_BUFSIZ;
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return -1;
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}
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} else {
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uirc_errno = UIRC_ERR_INVFMT;
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return -1;
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}
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assert(sv <= buf);
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for (unsigned int i = 0; i < IRC_MAXARGS && m->args[i] != NULL; i++) {
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int ret;
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if ((ret = snprintf(buf, len, (m->args[i + 1] == NULL && m->trailing) ? " :%s" : " %s", m->args[i])) >= 0) {
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buf += (size_t) ret;
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len -= (size_t) ret;
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} else {
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uirc_errno = UIRC_ERR_BUFSIZ;
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return -1;
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}
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}
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assert(sv <= buf);
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int ret;
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if ((ret = snprintf(buf, len, "\r\n")) >= 0) {
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buf += (size_t) ret;
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len -= (size_t) ret;
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} else {
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uirc_errno = UIRC_ERR_BUFSIZ;
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return -1;
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}
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assert(sv <= buf);
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return (ssize_t)(buf - sv);
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}
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