[libvirt] [PATCH 2/5] util: json: Add helpers for manipulating json arrays
Add a checker to determine whether a JSON object is an array and a
helper to steal objects from a JSON array.
---
src/util/virjson.c | 29 +++++++++++++++++++++++++++++
src/util/virjson.h | 2 ++
2 files changed, 31 insertions(+)
diff --git a/src/util/virjson.c b/src/util/virjson.c
index af760a8..005406a 100644
--- a/src/util/virjson.c
+++ b/src/util/virjson.c
@@ -563,6 +563,13 @@ virJSONValueObjectGetValue(virJSONValuePtr object,
}
+bool
+virJSONValueIsArray(virJSONValuePtr array)
+{
+ return array->type == VIR_JSON_TYPE_ARRAY;
+}
+
+
int
virJSONValueArraySize(virJSONValuePtr array)
{
@@ -587,6 +594,28 @@ virJSONValueArrayGet(virJSONValuePtr array,
}
+virJSONValuePtr
+virJSONValueArraySteal(virJSONValuePtr array,
+ unsigned int element)
+{
+ virJSONValuePtr ret = NULL;
+
+ if (array->type != VIR_JSON_TYPE_ARRAY)
+ return NULL;
+
+ if (element >= array->data.array.nvalues)
+ return NULL;
+
+ ret = array->data.array.values[element];
+
+ VIR_DELETE_ELEMENT(array->data.array.values,
+ element,
+ array->data.array.nvalues);
+
+ return ret;
+}
+
+
const char *
virJSONValueGetString(virJSONValuePtr string)
{
diff --git a/src/util/virjson.h b/src/util/virjson.h
index db11396..9487729 100644
--- a/src/util/virjson.h
+++ b/src/util/virjson.h
@@ -97,8 +97,10 @@ int virJSONValueArrayAppend(virJSONValuePtr object, virJSONValuePtr
value);
int virJSONValueObjectHasKey(virJSONValuePtr object, const char *key);
virJSONValuePtr virJSONValueObjectGet(virJSONValuePtr object, const char *key);
+bool virJSONValueIsArray(virJSONValuePtr array);
int virJSONValueArraySize(virJSONValuePtr object);
virJSONValuePtr virJSONValueArrayGet(virJSONValuePtr object, unsigned int element);
+virJSONValuePtr virJSONValueArraySteal(virJSONValuePtr object, unsigned int element);
int virJSONValueObjectKeysNumber(virJSONValuePtr object);
const char *virJSONValueObjectGetKey(virJSONValuePtr object, unsigned int n);
--
1.9.3