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/*
* Copyright (c) 2026 Dylan Araps
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef DFM_PLATFORM_BSD_H
#define DFM_PLATFORM_BSD_H
#include <stddef.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/event.h>
#include <sys/time.h>
#include <sys/stat.h>
#include "../lib/util.h"
#define ST_ATIM st_atimespec.tv_sec
#define ST_MTIM st_mtimespec.tv_sec
#define ST_CTIM st_ctimespec.tv_sec
struct platform {
int kq;
int dfd;
struct kevent ev;
};
static inline int
fs_watch_init(struct platform *p)
{
p->dfd = -1;
p->kq = kqueue();
return p->kq;
}
static inline void
fs_watch(struct platform *p, const char *path)
{
if (p->dfd != -1) {
close(p->dfd);
p->dfd = -1;
}
p->dfd = open(path, O_RDONLY);
if (p->dfd == -1) return;
EV_SET(&p->ev, p->dfd,
EVFILT_VNODE, EV_ADD|EV_CLEAR,
NOTE_WRITE|NOTE_DELETE|NOTE_RENAME|NOTE_ATTRIB, 0, NULL);
kevent(p->kq, &p->ev, 1, NULL, 0, NULL);
}
static inline int
fs_watch_pump(struct platform *p, const char **s, size_t *l)
{
*s = NULL;
*l = 0;
if (p->kq == -1 || p->dfd == -1)
return 0;
struct kevent o;
struct timespec ts = {0, 0};
int n = kevent(p->kq, NULL, 0, &o, 1, &ts);
if (n <= 0) return 0;
if (o.flags & EV_ERROR) return '!';
if (o.fflags & NOTE_DELETE) return '-';
if (o.fflags & NOTE_RENAME) return '~';
if (o.fflags & NOTE_ATTRIB) return '~';
if (o.fflags & NOTE_WRITE) return '+';
return 0;
}
static inline void
fs_watch_free(struct platform *p)
{
if (p->dfd != -1) close(p->dfd);
if (p->kq != -1) close(p->kq);
}
#define FS_WATCH 1
#endif // DFM_PLATFORM_BSD_H
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