Re: [RFC 07/21] conf: Replace virNetworkDNSTxtDefParseXML(hardcoded) with namesake(generated)

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On Wed, Jun 10, 2020 at 09:20:35AM +0800, Shi Lei wrote:
> Signed-off-by: Shi Lei <shi_lei@xxxxxxxxxxxxxx>
> ---
>  po/POTFILES.in           |  1 +
>  src/conf/Makefile.inc.am |  2 ++
>  src/conf/network_conf.c  | 47 ++++++----------------------------------
>  src/conf/network_conf.h  |  8 ++++---
>  4 files changed, 15 insertions(+), 43 deletions(-)

> diff --git a/src/conf/network_conf.c b/src/conf/network_conf.c
> index 47aaef3..964a8a7 100644
> --- a/src/conf/network_conf.c
> +++ b/src/conf/network_conf.c
> @@ -174,14 +174,6 @@ virNetworkIPDefClear(virNetworkIPDefPtr def)
>  }
>  
>  
> -static void
> -virNetworkDNSTxtDefClear(virNetworkDNSTxtDefPtr def)
> -{
> -    VIR_FREE(def->name);
> -    VIR_FREE(def->value);
> -}
> -
> -
>  static void
>  virNetworkDNSHostDefClear(virNetworkDNSHostDefPtr def)
>  {
> @@ -903,7 +895,7 @@ virNetworkDNSSrvDefParseXML(const char *networkName,
>  }
>  
>  
> -static int
> +int
>  virNetworkDNSTxtDefParseXMLHook(xmlNodePtr node G_GNUC_UNUSED,
>                                  virNetworkDNSTxtDefPtr def,
>                                  const char *networkName,
> @@ -943,33 +935,6 @@ virNetworkDNSTxtDefParseXMLHook(xmlNodePtr node G_GNUC_UNUSED,
>  }
>  
>  
> -static int
> -virNetworkDNSTxtDefParseXML(const char *networkName,
> -                            xmlNodePtr node,
> -                            virNetworkDNSTxtDefPtr def,
> -                            bool partialOkay)
> -{
> -    if (!(def->name = virXMLPropString(node, "name"))) {
> -        virReportError(VIR_ERR_XML_DETAIL,
> -                       _("missing required name attribute in DNS TXT record "
> -                         "of network %s"), networkName);
> -        goto error;
> -    }
> -
> -    def->value = virXMLPropString(node, "value");
> -
> -    if (virNetworkDNSTxtDefParseXMLHook(node, def, networkName,
> -                                        &partialOkay) < 0)
> -        goto error;
> -
> -    return 0;
> -
> - error:
> -    virNetworkDNSTxtDefClear(def);
> -    return -1;
> -}

Comparing this old code to the new generated code:


int
virNetworkDNSTxtDefParseXML(xmlNodePtr node,
                            virNetworkDNSTxtDefPtr def,
                            const char *instname,
                            void *opaque)
{
    g_autofree char *nameStr = NULL;
    g_autofree char *valueStr = NULL;
    VIR_USED(instname);
    VIR_USED(opaque);

    if (!def)
        goto error;

    nameStr = virXMLPropString(node, "name");
    if (nameStr == NULL) {
        virReportError(VIR_ERR_XML_ERROR,
                       _("Missing 'name' setting in '%s'"),
                       instname);
        goto error;
    }

    def->name = g_strdup(nameStr);

    valueStr = virXMLPropString(node, "value");
    if (valueStr)
        def->value = g_strdup(valueStr);

    if (virNetworkDNSTxtDefParseXMLHook(node, def, instname, opaque) < 0)
        goto error;

    return 0;

 error:
    
    virNetworkDNSTxtDefClear(def);
    return -1;
}


The main changes I'd suggest are

*  Change
  
        virReportError(VIR_ERR_XML_ERROR,
                       _("Missing 'name' setting in '%s'"),
                       instname);

   To

  
        virReportError(VIR_ERR_XML_ERROR,
                       _("Missing '%s' attribute in '%s'"),
                       "name", instname);

  so that it reduces the number of translatable strings

* Remove the extra g_strdup's


In an earlier patch I complained about your use of Clear()
functions. Now I see this patch though, I understand why
you were using Clear() - this pointer is just a member of
an array, so we can't directly Free() it.  So I withdraw
my objection on the earlier patch about use of Clear()



Regards,
Daniel
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