последние исправления ошибок

main.cpp

@@ -3,6 +3,9 @@
 #include "histogram.h"
 #include "text.h"
 #include "svg.h"
+#include <curl/curl.h>
+#include <sstream>
+#include <string>
 using namespace std;
 
 struct Input {
@@ -10,26 +13,65 @@ struct Input {
     size_t bin_count;
 };
 
-Input input_data() {
+Input input_data(istream& in, bool prompt) {
-    Input in;
+    Input inp;
     size_t number_count;
-    cerr << "Enter number count: ";
+    if (prompt){
-    cin >> number_count;
+        cerr << "Enter number count: ";
-
+    }
-    in.numbers.resize(number_count);
+    in >> number_count;
-    cerr << "Enter numbers: ";
+    inp.numbers.resize(number_count);
+    if (prompt){
+                cerr << "Enter numbers: ";
+        }
     for (size_t i = 0; i < number_count; i++) {
-        cin >> in.numbers[i];
+        in >> inp.numbers[i];
+    }
+
+    if (prompt) {
+            cerr << "Enter bin count: ";
     }
+    in >> inp.bin_count;
+    return inp;
+}
 
-    cerr << "Enter bin count: ";
+size_t
-    cin >> in.bin_count;
+write_data(void* items, size_t item_size, size_t item_count, void* ctx) {
-    return in;
+    stringstream* buffer = reinterpret_cast<stringstream*>(ctx);
+    size_t data_size = item_size * item_count;
+    (*buffer).write(reinterpret_cast<const char*>(items), data_size);
+    return data_size;
 }
 
-int main() {
+Input
-    auto in = input_data();
+download(const string& adress){
-    auto bins = make_histogram(in.numbers, in.bin_count);
+    stringstream buffer;
+    CURL* curl = curl_easy_init();
+    if(curl) {
+
+        CURLcode res;
+        curl_easy_setopt(curl, CURLOPT_URL, adress.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){
+            cerr << 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);
     show_histogram_svg(bins);
     return 0;
 }