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104 строки
2.3 KiB
C++
104 строки
2.3 KiB
C++
#include <iostream>
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#include <vector>
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#include "histogram.h"
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#include "text.h"
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#include "svg.h"
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#include <curl/curl.h>
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#include <sstream>
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#include <string>
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using namespace std;
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struct Input {
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vector<double> numbers;
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size_t bin_count{};
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};
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Input input_data(istream& stream, bool prompt) {
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size_t number_count;
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if (prompt) {
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cerr << "Enter number count: ";
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}
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stream >> number_count;
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Input in;
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in.numbers.resize(number_count);
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if (prompt){
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cerr << "Enter numbers: ";
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}
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for (size_t i = 0; i < number_count; i++)
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{
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stream >> in.numbers[i];
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}
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if (prompt){
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cerr << "Enter number of bins: ";
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}
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stream >> in.bin_count;
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return in;
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}
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size_t write_data(void* items, size_t item_size, size_t item_count, void* ctx) { // ðàçìåð ïðèíÿòûõ äàííûõ â áàéòàõ, èíà÷å curl_easy_perform() îñòàíîâèò ðàáîòó ñ îøèáêîé.
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size_t data_size = item_size * item_count;
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stringstream* buffer = reinterpret_cast<stringstream*>(ctx); // stringstream — ïîòîê, êîòîðûé ìîæåò ÷èòàòü èç áóôåðà â ïàìÿòè.
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auto text = reinterpret_cast<const char*>(items);
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buffer->write(text, data_size);
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return data_size;
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}
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Input download(const string& address) {
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stringstream buffer;
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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double connect_time;
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curl_easy_setopt(curl, CURLOPT_URL, address.c_str());
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
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curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
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res = curl_easy_perform(curl);
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if (!curl_easy_getinfo(curl, CURLINFO_CONNECT_TIME, &connect_time)) {
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cerr << "Connect time: " << connect_time << " seconds." << endl;
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} else {
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cerr << "Failed to retrieve connect time." << endl;
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}
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if (res != CURLE_OK) {
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cerr << "CURL error: " << curl_easy_strerror(res) << endl;
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curl_easy_cleanup(curl);
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exit(1);
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}
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curl_easy_cleanup(curl);
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}
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return input_data(buffer, false);
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}
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int main(int argc, char* argv[]){
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Input in;
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if (argc > 1) {
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in = download(argv[1]);
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} else {
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in = input_data(cin, true);
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}
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auto bins = make_histogram(in.numbers, in.bin_count);
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show_histogram_svg(bins);
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}
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