code: добавлена работа с буфером, загруженным по сети

main.cpp

@@ -4,6 +4,8 @@
 #include "histogram.h"
 #include "text.h"
 #include "svg.h"
+#include <sstream>
+#include <string>
 
 using namespace std;
 
@@ -38,6 +40,35 @@ input_data(istream& in, bool prompt) {
     return local;
 };
 
+Input
+download (const string& address) {
+    stringstream buffer;
+    CURL *curl = curl_easy_init();
+
+    if(curl) {
+        CURLcode res;
+        curl_easy_setopt(curl, CURLOPT_URL, address);
+        res = curl_easy_perform(curl);
+
+        if (res != CURLE_OK) {
+            cerr << curl_easy_strerror(res);
+            exit(1);
+        }
+
+        curl_easy_cleanup(curl);
+    }
+
+    return input_data(buffer, false);
+}
+
+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(static_cast<char*>(items), data_size);
+    return data_size;
+}
+
 int main(int argc, char* argv[]) {
 
     std::string fill = "red";
@@ -45,25 +76,14 @@ int main(int argc, char* argv[]) {
 
     curl_global_init(CURL_GLOBAL_ALL);
 
+    Input input;
     if (argc > 1) {
-        CURL *curl = curl_easy_init();
+        input = download(argv[1]);
-        if(curl) {
+    } else {
-            CURLcode res;
+        input = input_data(cin, true);
-            curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
-            res = curl_easy_perform(curl);
-
-            if (res != CURLE_OK) {
-                cerr << curl_easy_strerror(res);
-                exit(1);
-            }
-
-            curl_easy_cleanup(curl);
-        }
-        return 0;
     }
 
-    auto in = input_data(cin, true);
+    const auto bins = make_histogram(input.numbers, input.bin_count);
-    auto bins = make_histogram(in.numbers, in.bin_count);
     show_histogram_svg(bins, fill, stroke);
     return 0;
 }