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cJSON_Compare: Fix comparison of objects

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It did consider two arrays equal if one is a subset of te other one,
which is incorrect.

See #180
This commit is contained in:
Max Bruckner
2017-06-13 08:48:41 +02:00
parent 569aa060c6
commit 03ba72faec
2 changed files with 27 additions and 1 deletions
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19
cJSON.c
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@ -2605,10 +2605,11 @@ CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * cons
case cJSON_Object:
{
cJSON *a_element = NULL;
cJSON *b_element = NULL;
cJSON_ArrayForEach(a_element, a)
{
/* TODO This has O(n^2) runtime, which is horrible! */
cJSON *b_element = get_object_item(b, a_element->string, case_sensitive);
b_element = get_object_item(b, a_element->string, case_sensitive);
if (b_element == NULL)
{
return false;
@ -2620,6 +2621,22 @@ CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * cons
}
}
/* doing this twice, once on a and b to prevent true comparison if a subset of b
* TODO: Do this the proper way, this is just a fix for now */
cJSON_ArrayForEach(b_element, b)
{
a_element = get_object_item(a, b_element->string, case_sensitive);
if (a_element == NULL)
{
return false;
}
if (!cJSON_Compare(b_element, a_element, case_sensitive))
{
return false;
}
}
return true;
}