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refactor cJSONUtils_PatchDetach

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This commit is contained in:
Max Bruckner 2017-04-30 13:01:04 +02:00
parent 4ba6bafe34
commit 2040ce9004
1 changed files with 30 additions and 27 deletions
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57
cJSON_Utils.c
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@ -354,52 +354,55 @@ static cJSON *detach_item_from_array(cJSON *array, size_t which)
static cJSON *cJSONUtils_PatchDetach(cJSON *object, const unsigned char *path)
{
unsigned char *parentptr = NULL;
unsigned char *childptr = NULL;
unsigned char *parent_pointer = NULL;
unsigned char *child_pointer = NULL;
cJSON *parent = NULL;
cJSON *ret = NULL;
cJSON *detached_item = NULL;
/* copy path and split it in parent and child */
parentptr = cJSONUtils_strdup(path);
if (parentptr == NULL) {
return NULL;
parent_pointer = cJSONUtils_strdup(path);
if (parent_pointer == NULL) {
goto cleanup;
}
childptr = (unsigned char*)strrchr((char*)parentptr, '/'); /* last '/' */
if (childptr == NULL)
child_pointer = (unsigned char*)strrchr((char*)parent_pointer, '/'); /* last '/' */
if (child_pointer == NULL)
{
cJSON_free(parentptr);
return NULL;
goto cleanup;
}
/* split strings */
*childptr++ = '\0';
child_pointer[0] = '\0';
child_pointer++;
parent = cJSONUtils_GetPointer(object, (char*)parentptr);
cJSONUtils_InplaceDecodePointerString(childptr);
parent = cJSONUtils_GetPointer(object, (char*)parent_pointer);
cJSONUtils_InplaceDecodePointerString(child_pointer);
if (!parent)
{
/* Couldn't find object to remove child from. */
ret = NULL;
}
else if (cJSON_IsArray(parent))
if (cJSON_IsArray(parent))
{
size_t index = 0;
if (!decode_array_index_from_pointer(childptr, &index))
if (!decode_array_index_from_pointer(child_pointer, &index))
{
cJSON_free(parentptr);
return NULL;
goto cleanup;
}
ret = detach_item_from_array(parent, index);
detached_item = detach_item_from_array(parent, index);
}
else if (cJSON_IsObject(parent))
{
ret = cJSON_DetachItemFromObject(parent, (char*)childptr);
detached_item = cJSON_DetachItemFromObject(parent, (char*)child_pointer);
}
else
{
/* Couldn't find object to remove child from. */
goto cleanup;
}
cJSON_free(parentptr);
/* return the detachted item */
return ret;
cleanup:
if (parent_pointer != NULL)
{
cJSON_free(parent_pointer);
}
return detached_item;
}
static int cJSONUtils_Compare(cJSON *a, cJSON *b)