coin::SpaceSaving<T>::~SpaceSaving(){
Bucket<T> *bucket = least_bucket_;
while(bucket->next() != least_bucket_){
Element<T> *child = bucket->child();
while(child->next() != bucket->child()){
Element<T> *prev_child = child;
child = child->next();
delete prev_child;
}
Bucket<T> *prev_bucket = bucket;
bucket = bucket->next();
delete prev_bucket;
}
};
void coin::WordCounter::write_frequencies(const string& file, int minimum) const{
ofstream out(file, ios::out|ios::binary|ios::trunc);
double total = saving_->total();
out.write((char *)&total, sizeof(double));
Bucket<string> *bucket = saving_->least_bucket();
int64_t counter = 0;
do{
bucket = bucket->prev();
if(bucket->count() < minimum){
bucket = bucket->next();
break;
}
Element<string> *child = bucket->child();
map<string, Element<string>*> children;
do{
children[child->item()] = child;
child = child->next();
++counter;
}while(child != bucket->child());
int childs = children.size();
out.write((char *)&childs, sizeof(int));
double count = bucket->count();
out.write((char *)&count, sizeof(double));
for(pair<string, Element<string>*> child:children){
short size = child.first.size();
out.write((char *)&size, sizeof(short));
out.write(child.first.c_str(), sizeof(char) * size);
}
if(counter > saving_->max_count()){
break;
}
}while(bucket != saving_->least_bucket());
for(pair<string, double> dict_count:dict_counts_){
int childs = 1;
out.write((char *)&childs, sizeof(int));
out.write((char *)&dict_count.second, sizeof(double));
short size = dict_count.first.size();
out.write((char *)&size, sizeof(short));
out.write(dict_count.first.c_str(), sizeof(char) * size);
}
out.close();
cerr << counter << " words with at least " << bucket->count() << " frequencies are written" << endl;
}
