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refactor cJSONUtils_MergePatch

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This commit is contained in:
Max Bruckner 2017-04-30 13:17:39 +02:00
parent 01d656bebc
commit 11b8a8cd76
2 changed files with 11 additions and 9 deletions
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18
cJSON_Utils.c
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@ -1145,8 +1145,10 @@ CJSON_PUBLIC(void) cJSONUtils_SortObject(cJSON * const object)
object->child = cJSONUtils_SortList(object->child);
}
CJSON_PUBLIC(cJSON *) cJSONUtils_MergePatch(cJSON *target, cJSON *patch)
CJSON_PUBLIC(cJSON *) cJSONUtils_MergePatch(cJSON *target, const cJSON * const patch)
{
cJSON *patch_child = NULL;
if (!cJSON_IsObject(patch))
{
/* scalar value, array or NULL, just duplicate */
@ -1160,20 +1162,20 @@ CJSON_PUBLIC(cJSON *) cJSONUtils_MergePatch(cJSON *target, cJSON *patch)
target = cJSON_CreateObject();
}
patch = patch->child;
while (patch)
patch_child = patch->child;
while (patch_child != NULL)
{
if (cJSON_IsNull(patch))
if (cJSON_IsNull(patch_child))
{
/* NULL is the indicator to remove a value, see RFC7396 */
cJSON_DeleteItemFromObject(target, patch->string);
cJSON_DeleteItemFromObject(target, patch_child->string);
}
else
{
cJSON *replaceme = cJSON_DetachItemFromObject(target, patch->string);
cJSON_AddItemToObject(target, patch->string, cJSONUtils_MergePatch(replaceme, patch));
cJSON *replace_me = cJSON_DetachItemFromObject(target, patch_child->string);
cJSON_AddItemToObject(target, patch_child->string, cJSONUtils_MergePatch(replace_me, patch_child));
}
patch = patch->next;
patch_child = patch_child->next;
}
return target;
}

2
cJSON_Utils.h
View File

@ -56,7 +56,7 @@ CJSON_PUBLIC(int) cJSONUtils_ApplyPatches(cJSON * const object, const cJSON * co
/* Implement RFC7386 (https://tools.ietf.org/html/rfc7396) JSON Merge Patch spec. */
/* target will be modified by patch. return value is new ptr for target. */
CJSON_PUBLIC(cJSON *) cJSONUtils_MergePatch(cJSON *target, cJSON *patch);
CJSON_PUBLIC(cJSON *) cJSONUtils_MergePatch(cJSON *target, const cJSON * const patch);
/* generates a patch to move from -> to */
CJSON_PUBLIC(cJSON *) cJSONUtils_GenerateMergePatch(cJSON *from, cJSON *to);