new: implement and fix few more database functions

src/package/data.c

@@ -55,9 +55,5 @@ void lm_package_data_free(lm_pkg_t *pkg){
   free(pkg->desc);
   free(pkg->name);
   free(pkg->version);
-
-  if(NULL != pkg->depends){
-    for(int i = 0; pkg->depends[i] != NULL; i++)
-      free(pkg->depends[i]);
-  }
+  lm_package_depend_free(pkg);
 }

src/package/depend.c

@@ -43,6 +43,17 @@ bool lm_package_depend_add(lm_pkg_t *pkg, char *depend){
   return true;
 }
 
+void lm_package_depend_free(lm_pkg_t *pkg){
+  if(NULL == pkg)
+    return;
+
+  for(int i = 0; pkg->depends[i] != NULL; i++)
+    free(pkg->depends[i]);
+  free(pkg->depends);
+
+  pkg->depends = NULL;
+}
+
 size_t lm_package_depend_strlen(lm_pkg_t *pkg){
   size_t len = 1;
 
@@ -76,3 +87,22 @@ bool lm_package_depend_tostr(lm_pkg_t *pkg, char *buffer){
 
   return true;
 }
+
+bool lm_package_depend_fromstr(lm_pkg_t *pkg, char *buffer){
+  if(NULL == pkg){
+    lm_error_set(LM_ERR_ArgNULL);
+    return false;
+  }
+
+  lm_package_depend_free(pkg);
+
+  if(NULL == buffer)
+    return true;
+
+  char *save = NULL, *dep = NULL;
+  while((dep = strtok_r(buffer, ",", &save)) != NULL)
+    if(!lm_package_depend_add(pkg, dep))
+      return false;
+
+  return true;
+}

src/package/package.c

@@ -8,10 +8,15 @@
 
 lm_pkg_t *lm_package_new(){
   lm_pkg_t *pkg = malloc(sizeof(lm_pkg_t));
-  bzero(pkg, sizeof(lm_pkg_t));
+  lm_package_init(pkg);
   return pkg;
 }
 
+void lm_package_init(lm_pkg_t *pkg){
+  bzero(pkg, sizeof(lm_pkg_t));
+}
+
 void lm_package_free(lm_pkg_t *pkg){
   lm_package_data_free(pkg);
+  bzero(pkg, sizeof(lm_pkg_t));
 }