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//
// Copyleft RIME Developers
// License: GPLv3
//
// 2013-04-16 GONG Chen <chen.sst@gmail.com>
//
#ifndef RIME_TSV_H_
#define RIME_TSV_H_
#include <string>
#include <vector>
#include <boost/function.hpp>
namespace rime {
typedef std::vector<std::string> Tsv;
typedef boost::function<bool (const Tsv& row,
std::string* key,
std::string* value)> TsvParser;
typedef boost::function<bool (const std::string& key,
const std::string& value,
Tsv* row)> TsvFormatter;
class Sink;
class Source;
class TsvReader {
public:
TsvReader(const std::string& path, TsvParser parser)
: path_(path), parser_(parser) {
}
// return number of records read
int operator() (Sink* sink);
protected:
std::string path_;
TsvParser parser_;
};
class TsvWriter {
public:
TsvWriter(const std::string& path, TsvFormatter formatter)
: path_(path), formatter_(formatter) {
}
// return number of records written
int operator() (Source* source);
protected:
std::string path_;
TsvFormatter formatter_;
public:
std::string file_description;
};
template <class SinkType>
int operator<< (SinkType& sink, TsvReader& reader) {
return reader(&sink);
}
template <class SinkType>
int operator>> (TsvReader& reader, SinkType& sink) {
return reader(&sink);
}
template <class SourceType>
int operator<< (TsvWriter& writer, SourceType& source) {
return writer(&source);
}
template <class SourceType>
int operator>> (SourceType& source, TsvWriter& writer) {
return writer(&source);
}
} // namespace rime
#endif // RIME_TSV_H_
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