From 287737f413e89cdc0070849865fb42b9f8afcf09 Mon Sep 17 00:00:00 2001
From: Dmitry Guryanov <dguryanov@parallels.com>
Date: Wed, 2 May 2012 22:32:37 +0400
Subject: [PATCH] util: add functions for interating over json object

Add function virJSONValueObjectKeysNumber, virJSONValueObjectGetKey
and virJSONValueObjectGetValue, which allow you to iterate over all
fields of json object: you can get number of fields and then get
name and value, stored in field with that name by index.

Signed-off-by: Dmitry Guryanov <dguryanov@parallels.com>
---
 AUTHORS                  |  1 +
 src/libvirt_private.syms |  3 +++
 src/util/json.c          | 30 ++++++++++++++++++++++++++++++
 src/util/json.h          |  4 ++++
 4 files changed, 38 insertions(+)

diff --git a/AUTHORS b/AUTHORS
index 935a4d90a8..31e3772a86 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -235,6 +235,7 @@ Patches have also been contributed by:
   Ryan Woodsmall       <rwoodsmall@gmail.com>
   Wido den Hollander   <wido@widodh.nl>
   Eugen Feller         <eugen.feller@inria.fr>
+  Dmitry Guryanov      <dguryanov@parallels.com>
 
   [....send patches to get your name here....]
 
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index d4038b21f2..88f8a217af 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -671,14 +671,17 @@ virJSONValueObjectAppendNumberUlong;
 virJSONValueObjectAppendString;
 virJSONValueObjectGet;
 virJSONValueObjectGetBoolean;
+virJSONValueObjectGetKey;
 virJSONValueObjectGetNumberDouble;
 virJSONValueObjectGetNumberInt;
 virJSONValueObjectGetNumberLong;
 virJSONValueObjectGetNumberUint;
 virJSONValueObjectGetNumberUlong;
 virJSONValueObjectGetString;
+virJSONValueObjectGetValue;
 virJSONValueObjectHasKey;
 virJSONValueObjectIsNull;
+virJSONValueObjectKeysNumber;
 virJSONValueToString;
 
 
diff --git a/src/util/json.c b/src/util/json.c
index 3258c3f386..e7dc2729d8 100644
--- a/src/util/json.c
+++ b/src/util/json.c
@@ -431,6 +431,36 @@ virJSONValuePtr virJSONValueObjectGet(virJSONValuePtr object, const char *key)
     return NULL;
 }
 
+int virJSONValueObjectKeysNumber(virJSONValuePtr object)
+{
+    if (object->type != VIR_JSON_TYPE_OBJECT)
+        return -1;
+
+    return object->data.object.npairs;
+}
+
+const char *virJSONValueObjectGetKey(virJSONValuePtr object, unsigned int n)
+{
+    if (object->type != VIR_JSON_TYPE_OBJECT)
+        return NULL;
+
+    if (n >= object->data.object.npairs)
+        return NULL;
+
+    return object->data.object.pairs[n].key;
+}
+
+virJSONValuePtr virJSONValueObjectGetValue(virJSONValuePtr object, unsigned int n)
+{
+    if (object->type != VIR_JSON_TYPE_OBJECT)
+        return NULL;
+
+    if (n >= object->data.object.npairs)
+        return NULL;
+
+    return object->data.object.pairs[n].value;
+}
+
 int virJSONValueArraySize(virJSONValuePtr array)
 {
     if (array->type != VIR_JSON_TYPE_ARRAY)
diff --git a/src/util/json.h b/src/util/json.h
index 686a8fb4b2..436405f4c2 100644
--- a/src/util/json.h
+++ b/src/util/json.h
@@ -100,6 +100,10 @@ virJSONValuePtr virJSONValueObjectGet(virJSONValuePtr object, const char *key);
 int virJSONValueArraySize(virJSONValuePtr object);
 virJSONValuePtr virJSONValueArrayGet(virJSONValuePtr object, unsigned int element);
 
+int virJSONValueObjectKeysNumber(virJSONValuePtr object);
+const char *virJSONValueObjectGetKey(virJSONValuePtr object, unsigned int n);
+virJSONValuePtr virJSONValueObjectGetValue(virJSONValuePtr object, unsigned int n);
+
 const char *virJSONValueGetString(virJSONValuePtr object);
 int virJSONValueGetNumberInt(virJSONValuePtr object, int *value);
 int virJSONValueGetNumberUint(virJSONValuePtr object, unsigned int *value);
-- 
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