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yap-6.3/os/libtai/leapsecs_read.c
Vitor Santos Costa 9cfd4d8d8b move package/PLStream to os
modify Makefiles accordingly
define __unix__ on Unix like clones (OSX, AIX, etc).
2011-09-04 19:42:33 +02:00

63 lines
1.0 KiB
C

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <stdlib.h>
#ifdef __WINDOWS__
#include <io.h>
#else
#include <unistd.h>
#endif
#include "tai.h"
#define GLOBAL
#include "leapsecs.h"
#ifndef O_BINARY
#define O_BINARY 0
#endif
#ifndef O_NDELAY
#define O_NDELAY 0
#endif
int leapsecs_read(const char *file)
{ int fd;
struct stat st;
struct tai *t;
int n;
int i;
struct tai u;
fd = open(file, O_RDONLY|O_NDELAY|O_BINARY);
if (fd == -1) {
if (errno != ENOENT) return -1;
if (leapsecs) free(leapsecs);
leapsecs = 0;
leapsecs_num = 0;
return 0;
}
if (fstat(fd,&st) == -1) { close(fd); return -1; }
t = (struct tai *) malloc(st.st_size);
if (!t) { close(fd); return -1; }
n = read(fd,(char *) t,st.st_size);
close(fd);
if (n != st.st_size) { free(t); return -1; }
n /= sizeof(struct tai);
for (i = 0;i < n;++i) {
tai_unpack((char *) &t[i],&u);
t[i] = u;
}
if (leapsecs) free(leapsecs);
leapsecs = t;
leapsecs_num = n;
return 0;
}