code: выполнено индивидуальное задание

.gitignore

@@ -1,5 +1,6 @@
 /bin
 /obj
+/curl
 /lab01.depend
 /lab01.layout
 /unittest.depend

lab01.cbp

@@ -31,7 +31,12 @@
 		<Compiler>
 			<Add option="-Wall" />
 			<Add option="-fexceptions" />
+			<Add directory="curl/include" />
 		</Compiler>
+		<Linker>
+			<Add library="C:/Users/ASUS X507UF/Desktop/РПОСУ/lab01/curl/lib/libcurl.dll.a" />
+			<Add directory="curl/lib" />
+		</Linker>
 		<Unit filename="histogram.cpp" />
 		<Unit filename="histogram.h">
 			<Option target="&lt;{~None~}&gt;" />

main.cpp

@@ -1,5 +1,8 @@
 #include <iostream>
 #include <vector>
+#include <sstream>
+#include <string>
+#include <curl/curl.h>
 #include "histogram.h"
 #include "svg.h"
 
@@ -12,25 +15,66 @@ struct Input
 };
 
 Input
-input_data()
+input_data(istream& stream, bool prompt)
 {
     size_t number_count;
-    cerr << "Enter number count: ";
-    cin >> number_count;
+    if (prompt) {
+        cerr << "Enter number count: ";
+    }
+    stream >> number_count;
     Input in;
     in.numbers.resize(number_count);
     for (size_t i = 0; i < number_count; i++)
     {
-        cin >> in.numbers[i];
+        stream >> in.numbers[i];
     }
-    cerr << "Enter bin count: ";
-    cin >> in.bin_count;
+    if (prompt) {
+        cerr << "Enter bin count: ";
+    }
+    stream >> in.bin_count;
     return in;
 }
 
-int main()
+size_t write_data(void* items, size_t item_size, size_t item_count, void* ctx)
 {
-    Input in = input_data();
-    vector<size_t> bins = make_histogram(in.numbers, in.bin_count);
+    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);
+            }
+            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);
+    }
+    if (curl_version_info(CURLVERSION_NOW) != nullptr) {
+        auto curl_ver = curl_version_info(CURLVERSION_NOW)->version;
+        cerr << "cURL version " << curl_ver << "\n";
+        auto ssl_ver = curl_version_info(CURLVERSION_NOW)->ssl_version;
+        cerr << "SSL version " << ssl_ver << "\n";
+    } else{ cerr<<"curl_version_info() failed \n"; }
+    vector<size_t> bins = make_histogram(input.numbers, input.bin_count);
     show_histogram_svg(bins);
 }

svg.cpp

@@ -5,14 +5,6 @@
 
 using namespace std;
 
-bool
-check_width(double width) {
-    if (width >= 3 && width <= 30)
-        return true;
-    else
-        return false;
-}
-
 void
 svg_text(double left, double baseline, string text) {
     cout << "<text x='" << left
@@ -55,16 +47,8 @@ show_histogram_svg(const vector<size_t>& bins) {
     const auto TEXT_BASELINE = 20;
     const auto TEXT_WIDTH = 50;
     const auto BIN_HEIGHT = 30;
-    double BLOCK_WIDTH = 0;
+    const auto BLOCK_WIDTH = 10;
     const auto MAX_WIDTH = IMAGE_WIDTH - TEXT_WIDTH;
-    cerr << "Enter block width: ";
-    cin >> BLOCK_WIDTH;
-    bool check = check_width(BLOCK_WIDTH);
-    while (!check) {
-    cerr << "Incorrectly enter. The block width must be >= 3px and <= 30 px. Please try again." << endl;
-    cin >> BLOCK_WIDTH;
-    check = check_width(BLOCK_WIDTH);
-    }
     size_t max_count = 0;
     for (size_t x : bins) {
         if (x > max_count) {

unittest.cpp

@@ -2,7 +2,6 @@
 #define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
 #include "doctest.h"
 #include "histogram_internal.h"
-#include "svg_internal.h"
 
 TEST_CASE("distinct positive numbers") {
     double min = 0;
@@ -53,13 +52,3 @@ TEST_CASE("empty vector") {
     CHECK(min == 0);
     CHECK(max == 0);
 }
-
-TEST_CASE("correct block width") {
-    bool check = check_width(23.5);
-    CHECK(check == true);
-}
-
-TEST_CASE("incorrect block width") {
-    bool check = check_width(59);
-    CHECK(check == false);
-}