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77 строки
1.8 KiB
C++
77 строки
1.8 KiB
C++
#include <sstream>
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#include <string>
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#include <curl/curl.h>
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#include "text.h"
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#include "histogram.h"
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#include "svg.h"
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#include "histogram_internal.h"
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#include <iostream>
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#include <vector>
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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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size_t
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write_data(void* items, size_t item_size, size_t item_count, void* ctx)
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{
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size_t data_size = item_size * item_count;
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stringstream* buffer = reinterpret_cast<stringstream*>(ctx);
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buffer->write(reinterpret_cast<const char*>(items), data_size);
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return data_size;
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}
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Input input_data(istream& in, bool pro)
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{
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if (pro)
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cerr << "enter the number of numbers:";
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size_t number_count;
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in >> number_count;
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Input k;
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if (pro)
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cerr << "enter the numbers:";
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k.numbers.resize(number_count);
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for (size_t i = 0; i < number_count; i++)
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in >> k.numbers[i];
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if (pro)
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cerr << "enter the number of buckets:";
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in >> k.bin_count;
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return k;
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}
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Input
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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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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 (res != 0) {
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cout << curl_easy_strerror(res);
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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
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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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}
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else {
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in = input_data(cin, true);
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}
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auto ch = make_histogram(in.numbers, in.bin_count);
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show_histogram_svg(ch);
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} |