Re: [libnftnl PATCH 2/2] src/rule: Changed parser support for having consistent with the new print support

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El 11/03/14 21:16, Arturo Borrero Gonzalez escribió:
Hi Alvaro,

a few coments below about this patch.

On 9 March 2014 14:00, Alvaro Neira Ayuso <alvaroneay@xxxxxxxxx> wrote:
From: Álvaro Neira Ayuso <alvaroneay@xxxxxxxxx>

Signed-off-by: Alvaro Neira Ayuso <alvaroneay@xxxxxxxxx>
---
  src/rule.c |   77 +++++++++++++++++++++++++++++++-----------------------------
  1 file changed, 40 insertions(+), 37 deletions(-)


I would suggest to describe this parser change.

diff --git a/src/rule.c b/src/rule.c
index f0cafd3..e7335f8 100644
--- a/src/rule.c
+++ b/src/rule.c
@@ -540,28 +540,36 @@ int nft_jansson_parse_rule(struct nft_rule *r, json_t *tree,
         if (root == NULL)
                 return -1;

-       if (nft_jansson_parse_family(root, &family, err) != 0)
-               goto err;
+       if (nft_jansson_node_exist(root, "family")) {
+               if (nft_jansson_parse_family(root, &family, err) != 0)
+                       goto err;

         nft_rule_attr_set_u32(r, NFT_RULE_ATTR_FAMILY, family);
+       }


Fix indentation. The nft_rule_attr_set_u32() is now inside the if statement.


-       if (nft_jansson_parse_val(root, "handle", NFT_TYPE_U64, &uval64,
-                                 err) < 0)
-               goto err;
+       if (nft_jansson_node_exist(root, "handle")) {
+               if (nft_jansson_parse_val(root, "handle", NFT_TYPE_U64, &uval64,
+                                         err) < 0)

Mixed tab/spaces indentation before 'err) < 0)'


@@ -640,39 +648,34 @@ int nft_mxml_rule_parse(mxml_node_t *tree, struct nft_rule *r,

         family = nft_mxml_family_parse(tree, "family", MXML_DESCEND_FIRST,
                                        NFT_XML_MAND, err);
-       if (family < 0)
-               return -1;
-
-       r->family = family;
-       r->flags |= (1 << NFT_RULE_ATTR_FAMILY);
+       if (family >= 0) {
+               r->family = family;
+               r->flags |= (1 << NFT_RULE_ATTR_FAMILY);
+       }


I would suggest to, while at it, switch to nft_rule_attr_set_xx() functions.
IMHO, we will save some LOCs, among other benefits.

Yes, i have put this like that for following the same format that you have had. The next time, i'm going to ask before :D. I'm going to change that.


-       r->table = strdup(table);
-       r->flags |= (1 << NFT_RULE_ATTR_TABLE);
+               r->table = strdup(table);
+               r->flags |= (1 << NFT_RULE_ATTR_TABLE);
+       }

Just for completeness:
remember that for string attributes, the strdup() is done internally,
inside nft_rule_attr_set_str().

I know that ^^.


         if (nft_mxml_num_parse(tree, "handle", MXML_DESCEND_FIRST, BASE_DEC,
-                              &r->handle, NFT_TYPE_U64, NFT_XML_MAND, err) != 0)
-               return -1;
-
-       r->flags |= (1 << NFT_RULE_ATTR_HANDLE);
+                              &r->handle, NFT_TYPE_U64, NFT_XML_MAND, err) >= 0)

The line above is 82 characters long.

Thanks Arturo for helping me. I'm going to fix all the stuff.

Regards

Álvaro

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