util: json: Add accessor for geting a VIR_JSON_TYPE_NUMBER as string

Sometimes it's desired to get a JSON number as string. Add a helper.
This will help in cases where we'd want to convert the internal type from
string to something else.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>

src/libvirt_private.syms

@@ -2038,6 +2038,7 @@ virJSONValueGetBoolean;
 virJSONValueGetNumberDouble;
 virJSONValueGetNumberInt;
 virJSONValueGetNumberLong;
+virJSONValueGetNumberString;
 virJSONValueGetNumberUint;
 virJSONValueGetNumberUlong;
 virJSONValueGetString;

src/util/virjson.c

@@ -1043,6 +1043,16 @@ virJSONValueGetString(virJSONValuePtr string)
 }
 
 
+const char *
+virJSONValueGetNumberString(virJSONValuePtr number)
+{
+    if (number->type != VIR_JSON_TYPE_NUMBER)
+        return NULL;
+
+    return number->data.number;
+}
+
+
 int
 virJSONValueGetNumberInt(virJSONValuePtr number,
                          int *value)

src/util/virjson.h

@@ -134,6 +134,7 @@ const char *virJSONValueObjectGetKey(virJSONValuePtr object, unsigned int n);
 virJSONValuePtr virJSONValueObjectGetValue(virJSONValuePtr object, unsigned int n);
 
 const char *virJSONValueGetString(virJSONValuePtr object);
+const char *virJSONValueGetNumberString(virJSONValuePtr number);
 int virJSONValueGetNumberInt(virJSONValuePtr object, int *value);
 int virJSONValueGetNumberUint(virJSONValuePtr object, unsigned int *value);
 int virJSONValueGetNumberLong(virJSONValuePtr object, long long *value);