[PATCH 02/25] use g_autoptr for all xmlBuffers

[Laine Stump <laine@xxxxxxxxxx>]

AUTOPTR_CLEANUP_FUNC is set to xmlBufferFree() in util/virxml.h (This
is actually new - added accidentally (but fortunately harmlessly!) in
commit 257aba2dafe. I had added it along with the hunks in this patch,
then decided to remove it and submit separately, but missed taking out
the hunk in virxml.h)

Signed-off-by: Laine Stump <laine@xxxxxxxxxx>
---
 src/conf/domain_conf.c  |  4 +---
 src/conf/network_conf.c |  4 +---
 src/util/virxml.c       | 12 +++---------
 src/vmx/vmx.c           | 10 +++-------
 4 files changed, 8 insertions(+), 22 deletions(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 9d057f8c78..1916b51d38 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -29579,7 +29579,7 @@ virDomainDefFormatInternalSetRootName(virDomainDefPtr def,
                           def->description);
 
     if (def->metadata) {
-        xmlBufferPtr xmlbuf;
+        g_autoptr(xmlBuffer) xmlbuf = NULL;
         int oldIndentTreeOutput = xmlIndentTreeOutput;
 
         /* Indentation on output requires that we previously set
@@ -29596,12 +29596,10 @@ virDomainDefFormatInternalSetRootName(virDomainDefPtr def,
 
         if (xmlNodeDump(xmlbuf, def->metadata->doc, def->metadata,
                         virBufferGetIndent(buf) / 2, 1) < 0) {
-            xmlBufferFree(xmlbuf);
             xmlIndentTreeOutput = oldIndentTreeOutput;
             goto error;
         }
         virBufferAsprintf(buf, "%s\n", (char *) xmlBufferContent(xmlbuf));
-        xmlBufferFree(xmlbuf);
         xmlIndentTreeOutput = oldIndentTreeOutput;
     }
 
diff --git a/src/conf/network_conf.c b/src/conf/network_conf.c
index 5b578f894c..4ebad1483c 100644
--- a/src/conf/network_conf.c
+++ b/src/conf/network_conf.c
@@ -2508,7 +2508,7 @@ virNetworkDefFormatBuf(virBufferPtr buf,
     virBufferAsprintf(buf, "<uuid>%s</uuid>\n", uuidstr);
 
     if (def->metadata) {
-        xmlBufferPtr xmlbuf;
+        g_autoptr(xmlBuffer) xmlbuf = NULL;
         int oldIndentTreeOutput = xmlIndentTreeOutput;
 
         /* Indentation on output requires that we previously set
@@ -2525,12 +2525,10 @@ virNetworkDefFormatBuf(virBufferPtr buf,
 
         if (xmlNodeDump(xmlbuf, def->metadata->doc, def->metadata,
                         virBufferGetIndent(buf) / 2, 1) < 0) {
-            xmlBufferFree(xmlbuf);
             xmlIndentTreeOutput = oldIndentTreeOutput;
             return -1;
         }
         virBufferAsprintf(buf, "%s\n", (char *) xmlBufferContent(xmlbuf));
-        xmlBufferFree(xmlbuf);
         xmlIndentTreeOutput = oldIndentTreeOutput;
     }
 
diff --git a/src/util/virxml.c b/src/util/virxml.c
index 02b59ea2f8..848d549a8b 100644
--- a/src/util/virxml.c
+++ b/src/util/virxml.c
@@ -953,8 +953,7 @@ char *
 virXMLNodeToString(xmlDocPtr doc,
                    xmlNodePtr node)
 {
-    xmlBufferPtr xmlbuf = NULL;
-    char *ret = NULL;
+    g_autoptr(xmlBuffer) xmlbuf = NULL;
 
     if (!(xmlbuf = xmlBufferCreate())) {
         virReportOOMError();
@@ -964,15 +963,10 @@ virXMLNodeToString(xmlDocPtr doc,
     if (xmlNodeDump(xmlbuf, doc, node, 0, 1) == 0) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("failed to convert the XML node tree"));
-        goto cleanup;
+        return NULL;
     }
 
-    ret = g_strdup((const char *)xmlBufferContent(xmlbuf));
-
- cleanup:
-    xmlBufferFree(xmlbuf);
-
-    return ret;
+    return g_strdup((const char *)xmlBufferContent(xmlbuf));
 }
 
 
diff --git a/src/vmx/vmx.c b/src/vmx/vmx.c
index fa9766995c..67bbe27fde 100644
--- a/src/vmx/vmx.c
+++ b/src/vmx/vmx.c
@@ -697,8 +697,8 @@ virVMXConvertToUTF8(const char *encoding, const char *string)
 {
     char *result = NULL;
     xmlCharEncodingHandlerPtr handler;
-    xmlBufferPtr input;
-    xmlBufferPtr utf8;
+    g_autoptr(xmlBuffer) input = NULL;
+    g_autoptr(xmlBuffer) utf8 = NULL;
 
     handler = xmlFindCharEncodingHandler(encoding);
 
@@ -720,14 +720,10 @@ virVMXConvertToUTF8(const char *encoding, const char *string)
         goto cleanup;
     }
 
-    result = (char *)utf8->content;
-    utf8->content = NULL;
+    result = (char *)g_steal_pointer(&utf8->content);
 
  cleanup:
     xmlCharEncCloseFunc(handler);
-    xmlBufferFree(input);
-    xmlBufferFree(utf8);
-
     return result;
 }
 
-- 
2.25.4