code:вывод curl

main.cpp

@@ -1,9 +1,10 @@
-#include <vector>
 #include <iostream>
+#include <sstream>
+#include <vector>
+#include <curl/curl.h>
 #include "histogram.h"
-#include "text.h"
 #include "svg.h"
-#include <curl/curl.h>
+#include "text.h"
 
 using namespace std;
 
@@ -12,39 +13,65 @@ struct Input {
     size_t bin_count{};
 };
 
-Input input_data(istream& in_stream, bool prompt) {
+Input input_data(istream& in, bool prompt = false) {
-    Input in;
+    Input in_data;
     size_t number_count;
-    
+    if (prompt) cerr << "Enter number count: ";
-    if (prompt) {
+    in >> number_count;
-        cerr << "Enter number count: ";
+    in_data.numbers.resize(number_count);
+    if (prompt && number_count > 0) cerr << "Enter numbers: ";
+    for (size_t i = 0; i < number_count; i++) {
+        in >> in_data.numbers[i];
+    }
+    if (prompt) cerr << "Enter bin count: ";
+    in >> in_data.bin_count;
+    return in_data;
 }
-    in_stream >> number_count;
 
-    in.numbers.resize(number_count);
+// Колбэк-функция для cURL: записывает данные в буфер
-    if (prompt && number_count > 0) {
+size_t write_data(void* ptr, size_t size, size_t nmemb, void* userdata) {
-        cerr << "Enter numbers: ";
+    size_t total = size * nmemb;
+    stringstream* stream = reinterpret_cast<stringstream*>(userdata);
+    stream->write(reinterpret_cast<const char*>(ptr), total);
+    return total;
 }
-    for (size_t i = 0; i < number_count; i++) {
+
-        in_stream >> in.numbers[i];
+Input download(const string& url) {
+    CURL* curl = curl_easy_init();
+    if (!curl) {
+        cerr << "Failed to init curl" << endl;
+        exit(1);
     }
 
-    if (prompt) {
+    stringstream buffer;
-        cerr << "Enter bin count: ";
+    curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
+    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
+    curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
+
+    CURLcode res = curl_easy_perform(curl);
+    curl_easy_cleanup(curl);
+
+    if (res != CURLE_OK) {
+        cerr << "cURL error: " << curl_easy_strerror(res) << endl;
+        exit(1);
     }
-    in_stream >> in.bin_count;
 
-    return in;
+    return input_data(buffer, false);
 }
 
-int main() {
+int main(int argc, char* argv[]) {
     curl_global_init(CURL_GLOBAL_ALL);
 
-    auto in = input_data(cin, true);
+    Input input;
-    auto bins = make_histogram(in.numbers, in.bin_count);
+    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);
 
     curl_global_cleanup();
-
     return 0;
 }