51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
|
/* Copyright (C) 2019 C. McEnroe <june@causal.agency>
|
||
|
|
*
|
||
|
|
* This program is free software: you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU Affero General Public License
|
||
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <stdint.h>
|
||
|
|
|
||
|
|
#include "chat.h"
|
||
|
|
|
||
|
|
// Adapted from <https://github.com/cbreeden/fxhash/blob/master/lib.rs>.
|
||
|
|
static uint32_t hashChar(uint32_t hash, char ch) {
|
||
|
|
hash = (hash << 5) | (hash >> 27);
|
||
|
|
hash ^= ch;
|
||
|
|
hash *= 0x27220A95;
|
||
|
|
return hash;
|
||
|
|
}
|
||
|
|
|
||
|
|
enum IRCColor colorGen(const char *str) {
|
||
|
|
if (!str) return IRCDefault;
|
||
|
|
uint32_t hash = 0;
|
||
|
|
for (; str[0]; ++str) {
|
||
|
|
hash = hashChar(hash, str[0]);
|
||
|
|
}
|
||
|
|
while (IRCBlack == (hash & IRCLightGray)) {
|
||
|
|
hash = hashChar(hash, '\0');
|
||
|
|
}
|
||
|
|
return (hash & IRCLightGray);
|
||
|
|
}
|
||
|
|
|
||
|
|
static enum IRCColor colors[TagsLen];
|
||
|
|
|
||
|
|
struct Tag colorTag(struct Tag tag, const char *gen) {
|
||
|
|
if (!colors[tag.id]) colors[tag.id] = 1 + colorGen(gen);
|
||
|
|
return tag;
|
||
|
|
}
|
||
|
|
|
||
|
|
enum IRCColor colorFor(struct Tag tag) {
|
||
|
|
return colors[tag.id] ? colors[tag.id] - 1 : IRCDefault;
|
||
|
|
}
|