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125 строки
2.7 KiB
C++
125 строки
2.7 KiB
C++
#include <sstream>
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#include <string>
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#include <iostream>
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#include <cmath>
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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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using namespace std;
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struct Input
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{
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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
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input_data(istream& in, bool prompt)
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{
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if(prompt)
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cerr << "count=";
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size_t number_count;
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in >> number_count;
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Input rez;
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if(prompt)
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cerr << "numbers= ";
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rez.numbers.resize(number_count);
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for (size_t i = 0; i < number_count; i++)
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{
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in >> rez.numbers[i];
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}
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if(prompt)
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cerr << "bin_count= ";
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in >> rez.bin_count;
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return rez;
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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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{
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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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{
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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 main(int argc, char* argv[])
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{
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int ind;
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const char* format;
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Input input;
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if (argc > 1)
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{
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for (int i = 0; i < argc; i++)
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{
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if (strcmp(argv[i], static_cast<const char*>("-format")) == 0) //Ôóíêöèÿ strcmp âûïîëíÿåò ïîðÿäêîâîå ñðàâíåíèå ñòðîê; static_cast ïðèìåíÿåòñÿ äëÿ ïðèâåäåíèÿ òèïîâ
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{
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ind = i;
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}
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}
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if ((ind+1) < argc)
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{
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format = argv[ind + 1];
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if (!(strcmp(format, static_cast<const char*>("text")) == 0) && !(strcmp(format, static_cast<const char*>("svg")) == 0))
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{
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cout << "unknown format";
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return 0;
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}
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}
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else
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{
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cout << "write program format";
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return 0;
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}
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input = download(argv[1]);
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}
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else
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{
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input = input_data(cin, true);
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}
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const auto bins = make_histogram(input.numbers, input.bin_count);
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if (strcmp(format, static_cast<const char*>("text")) == 0) {
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show_histogram_text(bins, input.bin_count); }
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else if (strcmp(format, static_cast<const char*>("svg")) == 0) {
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show_histogram_svg(bins); }
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}
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