code: data stream

main.cpp

@@ -3,6 +3,8 @@
 #include "histogram.h"
 #include "text.h"
 #include "svg.h"
+#include <sstream>
+#include <string>
 #include <curl/curl.h>
 
 using namespace std;
@@ -32,13 +34,13 @@ Input input_data(istream& stream, bool prompt) {
   stream >> in.bin_count;
   return in;
 }
-
+Input
-int main(int argc, char* argv[]) {
+download(const string& address) {
-     if (argc > 1) {
+    stringstream buffer;
     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());
         res = curl_easy_perform(curl);
         if (res!=CURLE_OK){
             cerr << curl_easy_strerror(res);
@@ -46,9 +48,16 @@ int main(int argc, char* argv[]) {
         }
         curl_easy_cleanup(curl);
     }
-        return 0;
+    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);
     }
-    Input in = input_data(cin, false);
+    const auto bins = make_histogram(input.numbers, input.bin_count);
-    vector<size_t> bins = make_histogram(in.numbers, in.bin_count);
     show_histogram_svg(bins);
 }