code: итоговая версия программы без варианта

laba1cb/lab1final/main.cpp

@@ -1,9 +1,13 @@
+#include <curl/curl.h>
 #include <iostream>
 #include <cmath>
 #include <vector>
+#include <sstream>
+#include <string>
 #include "histogram.h"
 #include "text.h"
 #include "svg.h"
+
 using namespace std;
 
 
@@ -12,35 +16,78 @@ struct Input {
     size_t bin_count{};
 };
 
+size_t
+write_data(void* items, size_t item_size, size_t item_count, void* ctx) {
+     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
-input_data()
+input_data(istream& in, bool prompt)
 {
-
-size_t number_count;
+    if(prompt)
         cerr << "count=";
-cin >> number_count;
+    size_t number_count;
+    in >> number_count;
 
-Input in;
+    Input rez;
 
-in.numbers.resize(number_count);
+    if(prompt)
+        cerr << "numbers= ";
+    rez.numbers.resize(number_count);
 
-for (size_t i = 0; i < number_count; i++) {
-    cin >> in.numbers[i];
-}
-
-cerr << "bin_count= ";
-cin >> in.bin_count;
-
-return in;
-}
-
-
-int main()
+    for (size_t i = 0; i < number_count; i++)
     {
+       in >> rez.numbers[i];
+    }
+    if(prompt)
+        cerr << "bin_count= ";
+    in >> rez.bin_count;
+    return rez;
+}
 
-    auto in = input_data();
-    auto bins = make_histogram(in.numbers, in.bin_count);
-     show_histogram_svg(bins);
+Input
+download(const string& address) {
+    stringstream buffer;
+
+    CURL* curl = curl_easy_init();
+    if(curl)
+    {
+        CURLcode res;
+         curl_easy_setopt(curl, CURLOPT_URL, address.c_str());
+        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
+        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
+
+        res = curl_easy_perform(curl);
+        if (res != 0)
+            {
+            cout << curl_easy_strerror(res);
+            exit(1);
+            }
+
+        curl_easy_cleanup(curl);
+    }
+    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);
+    double ttt=0.0;
+     show_histogram_svg(bins,ttt);
    /* show_histogram_text(bins, in.bin_count);*/
 
     return 0;