TextQuery::TextQuery(std::ifstream &fin) :
file(StrBlob()),
wordMap(std::map<std::string,std::shared_ptr<std::set<line_no>>>())
{
std::string line;
//! each line
while(std::getline(fin, line))
{
file.push_back(line);
int n = file.size() - 1; //! the current line number
//! each word
std::stringstream lineSteam(line);
std::string word;
while(lineSteam >> word)
{
std::shared_ptr<std::set<line_no>>&
sp_lines = wordMap[word];
//! if null
if(!sp_lines)
{
sp_lines.reset(new std::set<line_no>);
}
sp_lines->insert(n);
}
}
}
//! Constructor
TextQuery::TextQuery(std::ifstream & is) : file(new std::vector<std::string>)
{
//! each line
std::string line;
while(std::getline(is,line))
{
file->push_back(line);
//! current line index
int index = file->size() - 1;
//! for each word
std::stringstream lineSteam(line);
std::string word;
while(lineSteam >> word)
{
//! fetch the smart pointer which is null when the word first time seen
std::shared_ptr<
std::set<index_Tp>>& sp_lineIndex = wm[word];
//! if null, allcate a new set to contain line indices
if(!sp_lineIndex)
sp_lineIndex.reset(new std::set<index_Tp>);
//! insert
sp_lineIndex->insert(index);
}
}
//! =debugging=
std::cout << "@alan : the size of wm is " << wm.size() <<"\n";
for(const auto &line : *file)
std::cout<<"@alan : \t" << line << "\n";
/*
for(const auto &e : wm)
{
std::cout << e.first << " :\n";
for (const auto &index : *(e.second))
{
std::cout << index << " ";
}
std::cout << "\n";
}
*/
//! =end=
}
