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#include <cstdlib>
#include <cstdio>
#include <iostream>
#include <fstream>
#include <sstream>
#include <string>
#include <gsl/gsl_rng.h>
#include <cstring>
#include <vector>
#include "framework/interface/Record.h"
#include "query/irs.h"
#pragma once
template <typename QP>
static std::vector<QP> read_lookup_queries(std::string fname, double selectivity) {
std::vector<QP> queries;
FILE *qf = fopen(fname.c_str(), "r");
size_t start, stop;
double sel;
while (fscanf(qf, "%zu%zu%lf\n", &start, &stop, &sel) != EOF) {
if (start < stop && std::abs(sel - selectivity) < 0.1) {
QP q;
q.target_key = start;
queries.push_back(q);
}
}
fclose(qf);
return queries;
}
template <typename QP>
static std::vector<QP> read_range_queries(std::string &fname, double selectivity) {
std::vector<QP> queries;
FILE *qf = fopen(fname.c_str(), "r");
size_t start, stop;
double sel;
while (fscanf(qf, "%zu%zu%lf\n", &start, &stop, &sel) != EOF) {
if (start < stop && std::abs(sel - selectivity) < 0.1) {
QP q;
q.lower_bound = start;
q.upper_bound = stop;
queries.push_back(q);
}
}
fclose(qf);
return queries;
}
template <typename QP>
static std::vector<QP> read_knn_queries(std::string fname, size_t k) {
std::vector<QP> queries;
FILE *qf = fopen(fname.c_str(), "r");
char *line = NULL;
size_t len = 0;
while (getline(&line, &len, qf) > 0) {
char *token;
QP query;
size_t idx = 0;
token = strtok(line, " ");
do {
query.point.data[idx++] = atof(token);
} while ((token = strtok(NULL, " ")));
query.k = k;
queries.emplace_back(query);
}
free(line);
fclose(qf);
return queries;
}
template<de::KVPInterface R>
static std::vector<R> read_sosd_file(std::string &fname, size_t n) {
std::fstream file;
file.open(fname, std::ios::in | std::ios::binary);
std::vector<R> records(n);
for (size_t i=0; i<n; i++) {
uint64_t k;
file.read((char*) &(k), sizeof(uint64_t));
records[i].key = k;
records[i].value = i;
}
return records;
}
template<typename K, typename V>
static std::vector<std::pair<K, V>> read_sosd_file_pair(std::string &fname, size_t n) {
std::fstream file;
file.open(fname, std::ios::in | std::ios::binary);
std::vector<std::pair<K,V>> records(n);
for (size_t i=0; i<n; i++) {
uint64_t k;
file.read((char*) &(k), sizeof(uint64_t));
records[i].first = k;
records[i].second = i;
}
return records;
}
/*
* This function expects a plaintext file with each vector on its own line.
* There should be D dimensions (or more) for each record, separated by
* whitespace. The function will generate a vector of n records, each
* record built from the first D dimensions of the data in the file.
*/
template <typename R, size_t D>
static std::vector<R> read_vector_file(std::string &fname, size_t n) {
std::fstream file;
file.open(fname, std::ios::in);
std::vector<R> records;
records.reserve(n);
for (size_t i=0; i<n; i++) {
std::string line;
if (!std::getline(file, line, '\n')) break;
std::stringstream line_stream(line);
R rec;
for (size_t j=0; j<D; j++) {
std::string dim;
if (!std::getline(line_stream, dim, ' ')) break;
rec.data[j] = atof(dim.c_str());
}
records.emplace_back(rec);
}
return records;
}
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