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/*
* json.c
*
* See the README file for copyright information and how to reach the author.
*
*/
#include "json.h"
#ifdef USEJSON
const char* charset = "utf-8"; // #TODO, move to configuration?
//***************************************************************************
// Copy JSON Object to Data Buffer
//***************************************************************************
int json2Data(json_t* obj, MemoryStruct* data, const char* encoding)
{
int status = success;
// will be freed by data's dtor
data->memory = json_dumps(obj, JSON_PRESERVE_ORDER);
data->size = strlen(data->memory);
sprintf(data->contentType, "application/json; charset=%s", charset);
// gzip content if supported by browser ...
if (data->size && encoding && strstr(encoding, "gzip"))
status = data->toGzip();
return status;
}
//***************************************************************************
// Add field to json object
//***************************************************************************
int addFieldToJson(json_t* obj, cDbValue* value, int ignoreEmpty, const char* extName)
{
char* name;
if (!value || !value->getField())
return fail;
name = strdup(extName ? extName : value->getField()->getName());
toCase(cLower, name); // use always lower case names in json
switch (value->getField()->getFormat())
{
case cDBS::ffAscii:
case cDBS::ffText:
case cDBS::ffMText:
if (!ignoreEmpty || !isEmpty(value->getStrValue()))
json_object_set_new(obj, name, json_string(value->getStrValue()));
break;
case cDBS::ffInt:
case cDBS::ffUInt:
json_object_set_new(obj, name, json_integer(value->getIntValue()));
break;
case cDBS::ffFloat:
json_object_set_new(obj, name, json_real(value->getFloatValue()));
break;
default:
break;
}
free(name);
return success;
}
//***************************************************************************
// Add field to json object
//***************************************************************************
int addFieldToJson(json_t* obj, cDbTable* table, const char* fname,
int ignoreEmpty, const char* extName)
{
return addFieldToJson(obj, table->getValue(fname), ignoreEmpty, extName);
}
//***************************************************************************
// Get Field From Json
// - if a default is required put it into the row
// before calling this function
//***************************************************************************
int getFieldFromJson(json_t* obj, cDbRow* row, const char* fname, const char* extName)
{
cDbValue* value = row->getValue(fname);
char* jname;
if (!value)
return fail;
jname = strdup(!isEmpty(extName) ? extName : value->getField()->getName());
toCase(cLower, jname); // use always lower case names in json
switch (value->getField()->getFormat())
{
case cDBS::ffAscii:
case cDBS::ffText:
case cDBS::ffMText:
{
const char* v = getStringFromJson(obj, jname, "");
if (!isEmpty(v) || !value->isEmpty())
value->setValue(v);
break;
}
case cDBS::ffInt:
case cDBS::ffUInt:
{
int v = getIntFromJson(obj, jname, 0);
const char* s = getStringFromJson(obj, jname, "_not_set_");
if (s && strcmp(s, "_not_set_") == 0)
break;
if (s && strcmp(s, "null") == 0)
value->setNull();
else
value->setValue(v);
break;
}
// case cDBS::ffFloat: #TODO to be implemented
// {
// double v = getFloatFromJson(obj, jname, na);
// if (v != na) value->setValue(v);
// break;
// }
default:
break;
}
return success;
}
//***************************************************************************
// Get Elements
//***************************************************************************
const char* getStringFromJson(json_t* obj, const char* name, const char* def)
{
json_t* o = json_object_get(obj, name);
if (!o)
return def;
return json_string_value(o);
}
int getBoolFromJson(json_t* obj, const char* name, bool def)
{
json_t* o = json_object_get(obj, name);
if (!o)
return def;
return json_boolean_value(o);
}
int getIntFromJson(json_t* obj, const char* name, int def)
{
json_t* o = json_object_get(obj, name);
if (!o)
return def;
return json_integer_value(o);
}
long getLongFromJson(json_t* obj, const char* name, long def)
{
json_t* o = json_object_get(obj, name);
if (!o)
return def;
return json_integer_value(o);
}
double getDoubleFromJson(json_t* obj, const char* name, double def)
{
json_t* o = json_object_get(obj, name);
if (!o)
return def;
return json_real_value(o);
}
int jStringValid(const char* s)
{
json_t* obj = json_string(s);
if (!obj)
return no;
json_decref(obj);
return yes;
}
//***************************************************************************
// Add Element
//***************************************************************************
int addToJson(json_t* obj, const char* name, const char* value, const char* def)
{
json_t* j = json_string(value ? value : def);
if (!j)
j = json_string("");
return json_object_set_new(obj, name, j);
}
int addToJson(json_t* obj, const char* name, long value)
{
return json_object_set_new(obj, name, json_integer(value));
}
int addToJson(json_t* obj, const char* name, int value)
{
return json_object_set_new(obj, name, json_integer(value));
}
int addToJson(json_t* obj, const char* name, json_t* o)
{
return json_object_set_new(obj, name, o);
}
//***************************************************************************
#endif // USEJSON
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