JSONNODE *ImgTagJson::genLitXmp(const Exiv2::Image::AutoPtr & image)
{
Exiv2::XmpData &data = image->xmpData();
data.sortByKey();
if (data.empty()) return NULL;
Exiv2::XmpData::const_iterator end = data.end();
JMAP *grpmap = new JMAP();
JSONNODE *tree = json_new(JSON_NODE);
for (Exiv2::XmpData::const_iterator i = data.begin(); i != end; ++i)
{
JSONNODE *grp;
if (grpmap->find(i->groupName()) == grpmap->end())
{
grp = json_new(JSON_NODE);
json_set_name(grp, i->groupName().c_str());
grpmap->insert(JMAP::value_type(i->groupName(), grp));
}
else
grp = (grpmap->find(i->groupName()))->second;
Exiv2::XmpData::const_iterator nxt = i + 1;
if ((nxt != data.end()) && (i->key() == nxt->key()))
{
//cout << "Array Elem! " << i->key() << endl;
JSONNODE *arr = json_new(JSON_ARRAY);
json_set_name(arr, i->tagName().c_str());
json_push_back(arr, json_new_a((i->tagName()).c_str(),
(i->print()).c_str()));
while ((nxt != data.end()) && (nxt->key() == i->key()))
{
json_push_back(arr, json_new_a((nxt->tagName()).c_str(),
(nxt->print()).c_str()));
nxt++;
}
json_push_back(grp, arr);
if (nxt == data.end()) break;
i = nxt - 1;
}
else
{
json_push_back(grp, json_new_a((i->tagName()).c_str(),
(i->print()).c_str()));
}
//cout << json_write_formatted(grp) << endl;
}
JMAP::iterator it;
for(it = grpmap->begin(); it != grpmap->end(); it++)
{
json_push_back(tree, it->second);
grpmap->erase(it);
}
//cout << it->first << endl;
delete grpmap;
//cout << json_write_formatted(tree) << endl;
json_set_name(tree, "xmp");
return tree;
}
