C
C
Iterate JSON where Member Names are Data Values
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Demonstrates how to parse JSON where member names are not keywords, but instead are data values.Chilkat C Downloads
#include <C_CkJsonObject.h>
void ChilkatSample(void)
{
BOOL success;
HCkJsonObject json;
int numMembers;
int i;
const char *name;
HCkJsonObject jRecord;
success = FALSE;
json = CkJsonObject_Create();
success = CkJsonObject_LoadFile(json,"qa_data/json/valuesAsNames.json");
// Imagine we have JSON such as the following:
// {
// "1680": {
// "entity_id": "1680",
// "type_id": "simple",
// "sku": "123"
// },
// "1701": {
// "entity_id": "1701",
// "type_id": "simple",
// "sku": "456"
// }
// }
//
// This presents a parsing problem because the member names, such as "1680"
// are not keywords. Instead they are data values. We don't know what they
// may be in advance.
// To solve, we iterate over the members, get the name of each, ...
numMembers = CkJsonObject_getSize(json);
for (i = 0; i <= numMembers - 1; i++) {
name = CkJsonObject_nameAt(json,i);
printf("%s:\n",name);
jRecord = CkJsonObject_ObjectAt(json,i);
printf("entity_id: %s\n",CkJsonObject_stringOf(jRecord,"entity_id"));
printf("type_id: %s\n",CkJsonObject_stringOf(jRecord,"type_id"));
printf("sku: %s\n",CkJsonObject_stringOf(jRecord,"sku"));
CkJsonObject_Dispose(jRecord);
}
CkJsonObject_Dispose(json);
}