78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
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/* Copyright (C) 2018 Curtis McEnroe <june@causal.agency>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero 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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* (at your option) any later version.
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*
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* This program 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 Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <err.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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#include "chat.h"
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const struct Tag TAG_ALL = { (size_t)-1, NULL };
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const struct Tag TAG_DEFAULT = { 0, "(status)" };
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static struct {
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char *name[TAGS_LEN];
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size_t len;
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size_t gap;
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} tags = {
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.name = { "(status)" },
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.len = 1,
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.gap = 1,
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};
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static struct Tag Tag(size_t id) {
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return (struct Tag) { id, tags.name[id] };
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}
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struct Tag tagName(const char *name) {
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for (size_t id = 0; id < tags.len; ++id) {
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if (!tags.name[id] || strcmp(tags.name[id], name)) continue;
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return Tag(id);
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}
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return TAG_ALL;
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}
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struct Tag tagNum(size_t num) {
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if (num < tags.gap) return Tag(num);
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num -= tags.gap;
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for (size_t id = tags.gap; id < tags.len; ++id) {
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if (!tags.name[id]) continue;
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if (!num--) return Tag(id);
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}
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return TAG_ALL;
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}
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struct Tag tagFor(const char *name) {
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struct Tag tag = tagName(name);
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if (tag.name) return tag;
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size_t id = tags.gap;
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tags.name[id] = strdup(name);
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if (!tags.name[id]) err(EX_OSERR, "strdup");
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if (tags.gap == tags.len) {
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tags.gap++;
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tags.len++;
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} else {
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for (tags.gap++; tags.gap < tags.len; ++tags.gap) {
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if (!tags.name[tags.gap]) break;
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}
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}
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return Tag(id);
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}
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