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/** CSci-4611 Assignment 3: Earthquake
*/
#include <fstream>
#include <algorithm>
#include "earthquake_database.h"
EarthquakeDatabase::EarthquakeDatabase(std::string filename) {
std::ifstream in(filename.c_str());
std::string line;
while (getline(in, line)) {
if (line.size() > 30) {
Earthquake e(line);
if (earthquakes.size() == 0) {
min_mag_ = (float)e.magnitude();
max_mag_ = (float)e.magnitude();
}
if (e.magnitude() > max_mag_) {
max_mag_ = (float)e.magnitude();
}
if (e.magnitude() < min_mag_) {
min_mag_ = (float)e.magnitude();
}
earthquakes.push_back(e);
}
}
}
Earthquake EarthquakeDatabase::earthquake(int index) {
return earthquakes[index];
}
int EarthquakeDatabase::min_index() {
return 250;
}
int EarthquakeDatabase::max_index() {
return (int)earthquakes.size() - 1;
}
int EarthquakeDatabase::FindMostRecentQuake(Date d) {
double targetSeconds = d.ToSeconds();
int start = min_index();
int end = max_index();
while (start < end-1) {
int half = (start + end) / 2;
if (earthquakes[half].date().ToSeconds() > targetSeconds) {
end = half - 1;
}
else {
start = half;
}
}
if (start == end) {
return start;
}
else {
if (earthquakes[end].date().ToSeconds() > targetSeconds) {
return start;
}
else {
return end;
}
}
}
float EarthquakeDatabase::min_magnitude() {
return min_mag_;
}
float EarthquakeDatabase::max_magnitude() {
return max_mag_;
}
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