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authorLaurent Bercot <ska-skaware@skarnet.org>2014-09-18 18:55:44 +0000
committerLaurent Bercot <ska-skaware@skarnet.org>2014-09-18 18:55:44 +0000
commit3534b428629be185e096be99e3bd5fdfe32d5544 (patch)
tree210ef3198ed66bc7f7b7bf6a85e4579f455e5a36 /src/libstddjb/leapsecs_init.c
downloadskalibs-3534b428629be185e096be99e3bd5fdfe32d5544.tar.xz
initial commit with rc for skalibs-2.0.0.0
Diffstat (limited to 'src/libstddjb/leapsecs_init.c')
-rw-r--r--src/libstddjb/leapsecs_init.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/src/libstddjb/leapsecs_init.c b/src/libstddjb/leapsecs_init.c
new file mode 100644
index 0000000..41f9b89
--- /dev/null
+++ b/src/libstddjb/leapsecs_init.c
@@ -0,0 +1,34 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <skalibs/uint64.h>
+#include <skalibs/djbunix.h>
+#include "djbtime-internal.h"
+
+static unsigned int leapsecs_len (uint64 const *data)
+{
+ register unsigned int i = 1 ;
+ while (data[i]) i++ ;
+ return i ;
+}
+
+static int leapsecs_read (char const *file, uint64 *data)
+{
+ char s[LEAPSECS_MAX * sizeof(uint64)] ;
+ register int n = openreadnclose(file, s, LEAPSECS_MAX * sizeof(uint64)) ;
+ if (n < 0) return -1 ;
+ if (n % sizeof(uint64)) return (errno = EINVAL, -1) ;
+ n /= sizeof(uint64) ;
+ {
+ register unsigned int i = 0 ;
+ for (; i < (unsigned int)n ; i++)
+ uint64_unpack_big(s + i * sizeof(uint64), data + i) ;
+ }
+ data[n] = 0 ;
+ return n ;
+}
+
+int leapsecs_init_r (char const *file, uint64 *data)
+{
+ return data[0] ? (int)leapsecs_len(data) : leapsecs_read(file, data) ;
+}