code: индивидуальный вариант

main.cpp

@@ -1,57 +1,92 @@
 #include <curl/curl.h>
-
-#include <iostream>
-#include <conio.h>
 #include <vector>
-#include <stdlib.h>
+#include <sstream>
+#include <string>
+#include <iostream>
 #include <string>
+
 #include "histogram.h"
 #include "text.h"
-#include "svg01.h"
+#include "svg.h"
 
 using namespace std;
 
 struct Input {
     vector<double> numbers;
-    size_t bin_count{};
+    size_t bin_count {};
 };
 
 Input
 input_data(istream& in, bool prompt){
 
-
     size_t number_count;
     if (prompt){
-        cerr << "Enter number count: ";
+            cerr << "Enter number count: ";
     }
     in >> number_count;
 
     Input iinn;
-
     iinn.numbers.resize(number_count);
     if (prompt){
-        cerr << "Enter numbers: " << endl;
-    }
-    for (size_t i=0; i < number_count; i++)
+            cerr << "Enter numbers: ";}
+    for (size_t i = 0; i < number_count; i++)
     {
         in >> iinn.numbers[i];
-
     }
 
     if (prompt){
-        cerr << "Enter bin count: ";
-    }
+            cerr << "Enter bin count: ";}
     in >> iinn.bin_count;
 
     return iinn;
 }
 
-int main()
+static 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
+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 != CURLE_OK) {
+                fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res));
+                exit(1);
+            }
+            if(!res) {
+                    curl_off_t dl;
+                    res = curl_easy_getinfo(curl, CURLINFO_SIZE_DOWNLOAD_T, &dl);
+                    if(!res) {
+                            cerr<<"Downloaded "<<dl<< " bytes\n";
+                            }
+                    }
+            curl_easy_cleanup(curl);
+        }
+    return input_data(buffer, false);
+}
+
+int
+main(int argc, char* argv[])
 {
+    #include <curl/curl.h>
     curl_global_init(CURL_GLOBAL_ALL);
+    Input input;
+    if (argc > 1) {
+        input = download(argv[1]);
+    } else {
+        input = input_data(cin, true);
+    }
 
-    Input iinn = input_data(cin, true);
-    std::vector<size_t> bins = make_histogram(iinn.numbers, iinn.bin_count);
+    const auto bins = make_histogram(input.numbers, input.bin_count);
     show_histogram_svg(bins);
-    return 0;
 }