new: implement check and update functions

src/package/package.c

@@ -5,6 +5,7 @@
 #include "../../include/util.h"
 
 #include <errno.h>
+#include <string.h>
 #include <strings.h>
 #include <stdlib.h>
 #include <unistd.h>
@@ -48,12 +49,39 @@ bool lm_package_remove_download(lm_pkg_t *pkg){
 }
 
 bool lm_package_is_same(lm_pkg_t *one, lm_pkg_t *two){
+  if(NULL == one || NULL == two){
+    lm_error_set(LM_ERR_ArgNULL);
+    return false;
+  }
+
   return eq(one->version, two->version) &&
          eq(one->name, two->name) &&
          eq(one->desc, two->desc) &&
          one->size == two->size;
 }
 
+bool lm_package_copy(lm_pkg_t *dst, lm_pkg_t *src){
+  lm_package_init(dst);
+
+  dst->name = strdup(src->name);
+  dst->version = strdup(src->version);
+  dst->desc = strdup(src->desc);
+  dst->size = src->size;
+  dst->pool = src->pool;
+
+  if(NULL != src->keeps){
+    for(int i = 0; src->keeps[i] != NULL; i++)
+      lm_package_keep_add(dst, src->keeps[i]);
+  }
+
+  if(NULL != src->depends){
+    for(int i = 0; src->depends[i] != NULL; i++)
+      lm_package_depend_add(dst, src->depends[i]);
+  }
+
+  return lm_package_path_copy(dst, src);
+}
+
 void lm_package_free(lm_pkg_t *pkg){
   lm_package_data_free(pkg);
   bzero(pkg, sizeof(lm_pkg_t));

src/package/path.c

@@ -1,4 +1,5 @@
 #include "../../include/package.h"
+#include "../../include/error.h"
 #include "../../include/types.h"
 #include "../../include/util.h"
 
@@ -38,6 +39,17 @@ bool lm_package_path_is_empty(lm_pkg_t *pkg){
          NULL == pkg->paths.archive;
 }
 
+bool lm_package_path_copy(lm_pkg_t *dst, lm_pkg_t *src){
+  if(NULL == dst || NULL == src){
+    lm_error_set(LM_ERR_ArgNULL);
+    return false;
+  }
+
+  dst->paths.archive = strdup(src->paths.archive);
+  dst->paths.signature = strdup(src->paths.signature);
+  return true;
+}
+
 void lm_package_path_free(lm_pkg_t *pkg){
   free(pkg->paths.signature);
   free(pkg->paths.archive);