#include <camellia.h>
#include <camellia/flags.h>
#include <camellia/syscalls.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>

void perror(const char *s) {
	if (s) fprintf(stderr, "%s: ", s);
	fprintf(stderr, "%s\n", strerror(errno));
}

int puts(const char *s) {
	return printf("%s\n", s);
}

int getchar(void) {
	return fgetc(stdin);
}

int putchar(int c) {
	return fputc(c, stdout);
}

off_t lseek(int fd, off_t off, int whence) {
	(void)fd; (void)off; (void)whence;
	errno = ENOSYS;
	return -1;
}

int remove(const char *path) {
	return unlink(path);
}

int rename(const char *oldpath, const char *newpath) {
	// TODO require a duplex flag in open()
	hid_t from, to;
	from = camellia_open(oldpath, OPEN_RW);
	if (from < 0) {
		return -1;
	}
	to = camellia_open(newpath, OPEN_WRITE | OPEN_CREATE);
	if (to < 0) {
		close(from);
		return -1;
	}

	long ret = _sys_duplex(from, to, DUPLEX_REMOVE);
	close(from);
	close(to);
	if (ret < 0) {
		errno = -ret;
		return -1;
	} else {
		return 0;
	}
}

// TODO tmpnam
char *tmpnam(char *s) {
	static char buf[L_tmpnam];
	if (!s) s = buf;
	strcpy(s, "/tmp/tmpnam");
	return s;
}