Вы не можете выбрать более 25 тем
Темы должны начинаться с буквы или цифры, могут содержать дефисы(-) и должны содержать не более 35 символов.
113 строки
2.6 KiB
C++
113 строки
2.6 KiB
C++
/* Äîêóìåíòàöèÿ cURL:
|
|
CURLOPT_FAILONERROR:
|
|
https://curl.se/libcurl/c/CURLOPT_FAILONERROR.html
|
|
https://curl.se/libcurl/c/libcurl-errors.html#CURLEHTTPRETURNEDERROR
|
|
*/
|
|
|
|
#include <iostream>
|
|
#include <vector>
|
|
#include "histogram.h"
|
|
#include "text.h"
|
|
#include "svg.h"
|
|
#include <curl/curl.h>
|
|
#include <sstream>
|
|
#include <string>
|
|
|
|
|
|
|
|
using namespace std;
|
|
struct Input
|
|
{
|
|
vector<double> numbers;
|
|
size_t bin_count{};
|
|
};
|
|
|
|
Input input_data(istream& inx, bool prompt)
|
|
{
|
|
size_t number_count;
|
|
if (prompt) cerr << "Enter number count: ";
|
|
inx >> number_count;
|
|
|
|
|
|
Input in;
|
|
in.numbers.resize(number_count);
|
|
|
|
vector<double> numbers(number_count);
|
|
if (prompt) cerr << "Enter numbers: ";
|
|
for (int i = 0; i < number_count; i++)
|
|
{
|
|
inx >> in.numbers[i];
|
|
}
|
|
|
|
if (prompt) cerr << "Enter bin count: ";
|
|
inx >> in.bin_count;
|
|
return in;
|
|
}
|
|
|
|
|
|
size_t write_data(void* items, size_t item_size, size_t item_count, void* ctx)
|
|
{
|
|
// TODO: äîïèñûâàòü äàííûå ê áóôåðó.
|
|
size_t data_size = item_size * item_count;
|
|
stringstream* buffer = reinterpret_cast<stringstream*>(ctx);
|
|
buffer->write(reinterpret_cast<const char*>(items), data_size);
|
|
return data_size;
|
|
}
|
|
|
|
Input
|
|
download(const string& address)
|
|
{
|
|
stringstream buffer;
|
|
CURL* curl = curl_easy_init();
|
|
if (curl)
|
|
{
|
|
curl_easy_setopt(curl, CURLOPT_URL, address.c_str());
|
|
|
|
// -----âàð 17
|
|
curl_easy_setopt(curl, CURLOPT_FAILONERROR, 1L); //Ïðåâðàùàåò HTTP-îøèáêè (ñòàòóñû 4xx è 5xx) â îøèáêè cURL
|
|
//-------
|
|
|
|
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
|
|
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
|
|
|
|
CURLcode res = curl_easy_perform(curl);
|
|
if (res != CURLE_OK)
|
|
{
|
|
// -----âàð 17
|
|
if (res == CURLE_HTTP_RETURNED_ERROR) {
|
|
cerr << "HTTP Error: Server returned 4xx/5xx status code for URL: " << address << endl; //Òî÷å÷íî îáðàáàòûâàåì ñëó÷àé, êîãäà ñåðâåð âåðíóë îøèáêó
|
|
} else {
|
|
cerr << "cURL error (" << res << "): " << curl_easy_strerror(res) << endl;
|
|
}
|
|
//--------
|
|
curl_easy_cleanup(curl);
|
|
exit(1);
|
|
}
|
|
curl_easy_cleanup(curl);
|
|
}
|
|
else
|
|
{
|
|
cerr << "curl_easy_init() failed" << endl;
|
|
exit(1);
|
|
}
|
|
|
|
return input_data(buffer, false);
|
|
}
|
|
|
|
int main(int argc, char* argv[])
|
|
{
|
|
Input input;
|
|
if (argc > 1)
|
|
{
|
|
input = download(argv[1]);
|
|
}
|
|
else
|
|
{
|
|
input = input_data(cin, true);
|
|
}
|
|
auto bins = make_histogram(input.numbers, input.bin_count);
|
|
//show_histogram_text(bins, in.bin_count, bin_size);
|
|
show_histogram_svg(bins);
|
|
}
|
|
|