Add zsetup, zunsetup, zinit, zfree, zswap, zsave, zload, zbits, and zlsb

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 24 insertions, 0 deletions

diff --git a/src/zload.c b/src/zload.c
new file mode 100644
index 0000000..53fae12
--- /dev/null
+++ b/src/zload.c
@@ -0,0 +1,24 @@
+/* See LICENSE file for copyright and license details. */
+#include "internals"
+
+#include <stdlib.h>
+#include <string.h>
+
+
+size_t
+zload(z_t a, const void *buffer)
+{
+        const char *buf = buffer;
+        a->sign    = *((int *)buf),    buf += sizeof(int);
+	a->used    = *((size_t *)buf), buf += sizeof(size_t);
+        a->alloced = *((size_t *)buf), buf += sizeof(size_t);
+	if (a->alloced) {
+        	a->chars = realloc(a->chars, a->alloced * sizeof(*(a->chars)));
+	} else {
+		a->chars = 0;
+	}
+	if (a->sign) {
+                memcpy(a->chars, buf, a->used * sizeof(*(a->chars)));
+	}
+	return sizeof(z_t) - sizeof(a->chars) + (a->sign ? a->used * sizeof(*(a->chars)) : 0);
+}