From 4f84464cc7f43ea52249498a3cca9d2bd4f97972 Mon Sep 17 00:00:00 2001
From: Artyom <StepanovAV@mpei.ru>
Date: Sat, 18 May 2024 20:34:46 +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=D0=B0=20=D0=B2=D0=BE=D0=B7=D0=BC=D0=BE=D0=B6=D0=BD?=
 =?UTF-8?q?=D0=BE=D1=81=D1=82=D1=8C=20=D1=80=D0=B0=D0=B1=D0=BE=D1=82=D1=8B?=
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---
 main.cpp | 47 +++++++++++++++++++++++++++++++++--------------
 svg.cpp  |  2 +-
 2 files changed, 34 insertions(+), 15 deletions(-)

diff --git a/main.cpp b/main.cpp
index 78499de..189fae0 100644
--- a/main.cpp
+++ b/main.cpp
@@ -3,6 +3,8 @@
 #include "histogram.h"
 #include "svg.h"
 #include <curl/curl.h>
+#include <sstream>
+#include <string>
 
 using namespace std;
 
@@ -12,8 +14,7 @@ struct Input {
 };
 
 Input
-input_data(istream& stream){
-    bool prompt = true;
+input_data(istream& stream, bool prompt){
     size_t number_count;
     if (prompt){
         cerr << "Enter number count:" << endl;
@@ -34,27 +35,45 @@ input_data(istream& stream){
     stream >> in.bin_count;
     return in;
 }
+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);
+    auto text = reinterpret_cast<const char*>(items);
+    buffer->write(text, data_size);
+    return data_size;
+}
 
-
-int
-main(int argc, char* argv[]) {
-    if (argc > 1){
-        CURL *curl = curl_easy_init();
+Input
+download(const string& address){
+    stringstream buffer;
+    curl_global_init(CURL_GLOBAL_ALL);
+    CURL *curl = curl_easy_init();
         if(curl) {
             CURLcode res;
-            curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
+            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);
-            curl_easy_cleanup(curl);
-            if (!res) {
+            if (res != 0) {
                 curl_easy_strerror(res);
                 exit(1);
             }
+            curl_easy_cleanup(curl);
         }
-        return 0;
+    return input_data(buffer, false);
+}
+
+int
+main(int argc, char* argv[]) {
+    Input input;
+    if (argc > 1){
+        input = download(argv[1]);
     }
-    curl_global_init(CURL_GLOBAL_ALL);
-    auto in = input_data(cin);
-    auto bins = make_histogram(in.numbers, in.bin_count);
+    else{
+        input = input_data(cin, true);
+    }
+    auto bins = make_histogram(input.numbers, input.bin_count);
     show_histogram_svg(bins);
     return 0;
 }
diff --git a/svg.cpp b/svg.cpp
index c8cd4e1..e5ebf49 100644
--- a/svg.cpp
+++ b/svg.cpp
@@ -50,7 +50,7 @@ show_histogram_svg(const vector<size_t>& bins) {
     }
     for (size_t bin : bins) {
         double bin_width = BLOCK_WIDTH * bin;
-        if ((IMAGE_WIDTH - TEXT_WIDTH) < (bin * BLOCK_WIDTH)){
+        if ((IMAGE_WIDTH - TEXT_WIDTH) < (maxbin * BLOCK_WIDTH)){
             bin_width = (IMAGE_WIDTH - TEXT_WIDTH) * ( bin / maxbin );
         }
         svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));