code: Сохранение данных из сети в буфер

main.cpp

@@ -4,6 +4,8 @@
 #include "text.h"
 #include "svg.h"
 #include <curl/curl.h>
+#include <sstream>
+#include <string>
 using namespace std;
 
 
@@ -41,19 +43,26 @@ input_data(istream& stream, bool prompt)
     in.max_count = 0;
     return in;
 }
-
-
-
-int main(int argc, char* argv[])
+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);
+    auto text = reinterpret_cast<const char*>(items);
+    buffer->write(text, data_size);
+    return data_size;
+}
+Input download(const string& address)
 {
 
-    if (argc > 1)
-    {
+    stringstream buffer;
+    curl_global_init(CURL_GLOBAL_ALL);
     CURL* curl = curl_easy_init();
     if(curl)
     {
         CURLcode res;
-            curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
+        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 != CURLE_OK)
         {
@@ -62,13 +71,18 @@ int main(int argc, char* argv[])
         }
         curl_easy_cleanup(curl);
     }
-        return 0;
-    }
-    curl_global_init(CURL_GLOBAL_ALL);
-    bool prompt = true;
-    auto in = input_data(cin, prompt);
-    auto bins = make_histogram(in.numbers, in.bin_count, in.number_count, in.max_count);
-    vector<double> test;
-    show_histogram_svg(bins, in.max_count, in.bin_count, test);
-    return 0;
+      return input_data(buffer, false);
+}
+int main(int argc, char* argv[]){
+
+    Input in;
+    if (argc > 1) {
+        in = download(argv[1]);
+    } else {
+        in = input_data(cin, true);
+    }
+auto bins = make_histogram(in.numbers, in.bin_count, in.number_count, in.max_count);
+vector<double> test;
+show_histogram_svg(bins, in.max_count, in.bin_count, test);
+return 0;
 }