use nix build & meson & zlog

src/lib/xlist.c

@@ -0,0 +1,99 @@
+#include <errno.h>
+#include <stdlib.h>
+
+#include "utils.h"
+#include "xlist.h"
+
+int xlist_init(xlist_t* l,
+               int      delta)
+{
+    if ((l == NULL) || (delta <= 0)) {
+        return -EINVAL;
+    }
+
+    l->delta = delta;
+    l->data  = NULL;
+    l->count = 0;
+    l->caps  = 0;
+
+    return 0;
+}
+
+static int xlist_ensure(xlist_t* l)
+{
+    void* p;
+    int   nc, i;
+
+    if (l->count < l->caps) {
+        return 1;
+    }
+
+    nc = l->caps + l->delta;
+    p  = (void*)realloc(l->data, nc * sizeof(void*));
+    if (p == NULL) {
+        return -ENOMEM;
+    }
+
+    l->data = p;
+    for(i = l->caps; i < nc; i ++) {
+	l->data[i] = NULL;
+    }
+    
+    l->caps = nc;
+
+    return 1;
+}
+
+int xlist_store(xlist_t* l,
+                void*    data)
+{
+    int rc;
+
+    if (l == NULL) {
+        return -EINVAL;
+    }
+
+    rc = xlist_ensure(l);
+    if (rc < 0) {
+        return rc;
+    }
+
+    l->data[l->count] = data;
+    l->count++;
+
+    return 1;
+}
+
+void xlist_clear(xlist_t *l) {
+    if (l == NULL) {
+	return;
+    }
+
+    l->count = 0;
+}
+
+int xlist_iter(xlist_t *l,
+	       xlist_iter_fn_t fn,
+	       void *data) {
+    int i;
+    
+    if ((l == NULL) || (fn == NULL)) {
+	return -EINVAL;
+    }
+
+    for(i = 0; i < l->count; i ++) {
+	(*fn)((void *)l->data[i], data);
+    }
+
+    return 0;
+}
+
+void xlist_fini(xlist_t* l)
+{
+    if (l == NULL) {
+        return;
+    }
+
+    FREEUP(l->data);
+    return;
+}