From 21c78ba11b6e8828154542efa091bec5b0c99a20 Mon Sep 17 00:00:00 2001
From: EvdochenkoNV <YevdochenkoNV>
Date: Sat, 24 May 2025 17:10:24 +0300
Subject: [PATCH] =?UTF-8?q?code:=20=D0=B4=D0=BE=D0=B1=D0=B0=D0=B2=D0=BB?=
 =?UTF-8?q?=D0=B5=D0=BD=D1=8B=20write=5Fdata,=20download?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 main.cpp | 51 ++++++++++++++++++++++++++++++++-------------------
 1 file changed, 32 insertions(+), 19 deletions(-)

diff --git a/main.cpp b/main.cpp
index ad46135..22aa501 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,5 +1,7 @@
 #include <curl/curl.h>
 
+#include <sstream>
+#include <string>
 #include "histogram.h"
 #include "text.h"
 #include "svg.h"
@@ -8,7 +10,6 @@ struct Input {
     vector<double> vec;
     size_t korz{};
 };
-
 Input input_data(istream& in, bool prompt = false) {
     Input lin;
     size_t n, korz;
@@ -24,27 +25,39 @@ Input input_data(istream& in, bool prompt = false) {
     return lin;
 }
 
-int main(int argc, char* argv[]) {
-    if (argc > 1) {
-        CURL* curl = curl_easy_init();
-        if (curl) {
-            curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
-
-            CURLcode res = curl_easy_perform(curl);
-            if (res != CURLE_OK) {
-                cerr << "cURL error: " << curl_easy_strerror(res) << endl;
-                exit(1);
-            }
+size_t write_data(void* items, size_t item_size, size_t item_count, void* ctx){
+    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;
+}
 
-            curl_easy_cleanup(curl);
-        } else {
-            cerr << "curl_easy_init() failed" << endl;
+Input download(const string& address){
+    stringstream buffer;
+    CURL* curl = curl_easy_init();
+    if (curl) {
+        curl_easy_setopt(curl, CURLOPT_URL, address.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);
         }
-        return 0;
-    }
+    return input_data(buffer, false);
+}
+}
 
-    auto in = input_data(cin);
-    auto bins = make_histogram(in.korz, in.vec);
+int main(int argc, char* argv[]) {
+    curl_global_init(CURL_GLOBAL_ALL);
+    Input input;
+    if (argc > 1) {
+       input = download(argv[1]);
+    }else{
+        input = input_data(cin, true);
+    }
+    auto bins = make_histogram(input.korz, input.vec);
     show_histogram_svg(bins);
     return 0;
 }