BTW, my pointer math code was trying to mimic the below code I found for "uniqueifyJsonbObject".
I just removed the logic for dropping duplicates. My difficulty is that I couldn't find out how to interface the jsonb object I get from
my "print_kv_pair()" to this function. Just out of curiosity, I am still interested in finding a way to extract
and feed the JsonValue the right way.
static void
uniqueifyJsonbObject(JsonbValue *object)
{
bool hasNonUniq = false;
Assert(object->type == jbvObject);
if (object->val.object.nPairs > 1)
qsort_arg(object->val.object.pairs, object->val.object.nPairs, sizeof(JsonbPair),
lengthCompareJsonbPair, &hasNonUniq);
if (hasNonUniq)
{
JsonbPair *ptr = object->val.object.pairs + 1,
*res = object->val.object.pairs;
while (ptr - object->val.object.pairs < object->val.object.nPairs)
{
// Avoid copying over duplicate
if (lengthCompareJsonbStringValue(ptr, res) != 0)
{
res++;
if (ptr != res)
memcpy(res, ptr, sizeof(JsonbPair));
}
ptr++;
}
object->val.object.nPairs = res + 1 - object->val.object.pairs;
}
}
Yeah I'm not sure why you're looping using pointer math, the iterators are there to provide that service. Another function to check out 'jsonb_each', other than the set returning function parts, it does what it looks like your are trying to do.
-Michel
>>>>> "T" == T L <tinlyx@gmail.com> writes:
T> Below is my test. It prints a strange character instead of "a"; and
T> says that the value isn't numeric.
Yeah, there's plenty else wrong with your code.
Did you look at how JsonbToCStringWorker does it? that looks like the
best example I can find on a quick scan.
--
Andrew (irc:RhodiumToad)