code:Защита

.gitignore

@@ -1,5 +1,6 @@
 /bin/
 /obj/
+/curl/
 *.rsuser
 *.suo
 *.user

histogram.cpp

@@ -4,7 +4,10 @@
 #include <vector>
 using namespace std;
 
-void find_minmax(const vector<double>& numbers, double& min, double& max) {
+bool find_minmax(const vector<double>& numbers, double& min, double& max) {
+    if (numbers.empty()) {
+        return false;
+    }
     min = numbers[0];
     max = numbers[0];
     for (double x : numbers) {
@@ -13,6 +16,7 @@ void find_minmax(const vector<double>& numbers, double& min, double& max) {
         if (x > max)
             max = x;
     }
+    return false;
 }
 
 vector<size_t> make_histogram(const vector<double>& numbers, size_t bin_count) {

histogram_internal.h

@@ -1,6 +1,5 @@
+
 #pragma once
 #include <vector>
 
-void find_minmax(const std::vector<double>& numbers,
-    double& min,
-    double& max);
+bool find_minmax(const std::vector<double>& numbers, double& min, double& max);

laba01upd3.cpp

@@ -1,44 +1,75 @@
 #include <iostream>
 #include <vector>
+#include <sstream>
+#include <string>
 #include "histogram.h"
 #include "svg.h"
 #include "text.h"
-#include <string>
+#include <curl/curl.h>
 
 using namespace std;
 
-
 struct Input {
     vector<double> numbers;
     size_t bin_count{};
 };
 
-Input input_data() {
+Input input_data(istream& in, bool prompt) {
+    if (prompt) cerr << "Enter number count: ";
     size_t number_count;
-    cerr << "Enter number count: ";
-    cin >> number_count;
-
-    Input in;
-    in.numbers.resize(number_count);
-    cerr << "Enter " << number_count << " numbers: ";
+    in >> number_count;
+    Input data;
+    data.numbers.resize(number_count);
+    if (prompt) cerr << "Enter " << number_count << " numbers: ";
     for (size_t i = 0; i < number_count; i++) {
-        cin >> in.numbers[i];
+        in >> data.numbers[i];
+    }
+    if (prompt) cerr << "Enter bin count: ";
+    in >> data.bin_count;
+    return data;
 }
 
-    cerr << "Enter bin count: ";
-    cin >> in.bin_count;
-
-    return in;
+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;
+    auto* 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();
 
+    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);
+    if (res != CURLE_OK) {
+        cerr << "curl_easy_perform() failed: " << curl_easy_strerror(res) << "\n";
+        curl_easy_cleanup(curl);
+        exit(1);
+    }
 
-int main() {
-    auto in = input_data();
-    auto bins = make_histogram(in.numbers, in.bin_count);
+    double download_speed = 0.0;
+    curl_easy_getinfo(curl, CURLINFO_SPEED_DOWNLOAD, &download_speed);
+    cerr << "Download speed: " << download_speed << " bytes/sec\n";
+
+    curl_easy_cleanup(curl);
+    return input_data(buffer, false);
+}
+
+int main(int argc, char* argv[]) {
+    curl_global_init(CURL_GLOBAL_ALL);
+    Input in;
+    if (argc > 1) {
+        in = download(argv[1]);
+    }
+    else {
+        in = input_data(cin, true);
+    }
+    const auto bins = make_histogram(in.numbers, in.bin_count);
     show_histogram_svg(bins);
     show_histogram_text(bins);
-    
-
+    curl_global_cleanup();
     return 0;
 }

laba01upd3.vcxproj

@@ -0,0 +1,169 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
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+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
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+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
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+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{7aea3de0-791a-40df-b555-ed559221baa2}</ProjectGuid>
+    <RootNamespace>laba01upd3</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
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+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
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+      <AdditionalDependencies>libcurl.lib;%(AdditionalDependencies);libcurl.dll.a;libcurl.dll.a;libcrypto.a;libssl.a</AdditionalDependencies>
+    </Link>
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+    <ClCompile Include="laba01upd3.cpp" />
+    <ClCompile Include="svg.cpp" />
+    <ClCompile Include="text.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include=".gitignore" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="histogram.h" />
+    <ClInclude Include="histogram_internal.h" />
+    <ClInclude Include="svg.h" />
+    <ClInclude Include="text.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
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laba01upd3.vcxproj.filters

@@ -0,0 +1,48 @@
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+      <Filter>Файлы заголовков</Filter>
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svg.cpp

@@ -1,4 +1,4 @@
-#include "svg.h"
+#include "svg.h"
 #include <string>
 using namespace std;
 
@@ -14,6 +14,7 @@ void svg_begin(double width, double height) {
 void svg_end() {
     cout << "</svg>\n";
 }
+
 void svg_text(double left, double baseline, const string& text) {
     cout << "<text x='" << left
         << "' y='" << baseline
@@ -31,6 +32,7 @@ void svg_rect(double x, double y, double width, double height,
         << "' fill='" << fill
         << "' />\n";
 }
+
 void show_histogram_svg(const vector<size_t>& bins) {
     const double IMAGE_WIDTH = 400;
     const double IMAGE_HEIGHT = 300;

unittest/histogram_internal.h

@@ -1,6 +1,6 @@
 #pragma once
 #include <vector>
 
-void find_minmax(const std::vector<double>& numbers,
+bool find_minmax(const std::vector<double>& numbers,
     double& min,
     double& max);

unittest/unittest.cpp

@@ -10,10 +10,9 @@ TEST_CASE("distinct positive numbers") {
     CHECK(max == 2);
 }
 TEST_CASE("empty vector") {
-    double min = 42, max = 42;
-    find_minmax({}, min, max);
-    CHECK(min == 42);
-    CHECK(max == 42);
+    double min = 0, max = 0;
+    CHECK(!find_minmax({}, min, max));
+    
 }
 
 TEST_CASE("single element") {

unittest/unittest.vcxproj.filters

@@ -5,14 +5,14 @@
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   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\histogram.cpp">
@@ -24,13 +24,13 @@
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\histogram_internal.h">
-      <Filter>Файлы заголовков</Filter>
+      <Filter>Исходные файлы\Файлы заголовков</Filter>
     </ClInclude>
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+      <Filter>Исходные файлы\Файлы заголовков</Filter>
     </ClInclude>
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+      <Filter>Исходные файлы\Файлы заголовков</Filter>
     </ClInclude>
   </ItemGroup>
 </Project>