code:Защита

.gitignore

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

histogram.cpp

@@ -1,13 +1,13 @@
-
 #include "histogram.h"
 #include "histogram_internal.h"
+#include <iostream>
 #include <vector>
-
 using namespace std;
 
 bool find_minmax(const vector<double>& numbers, double& min, double& max) {
-    if (numbers.empty())
+    if (numbers.empty()) {
         return false;
+    }
     min = numbers[0];
     max = numbers[0];
     for (double x : numbers) {
@@ -16,7 +16,7 @@ bool find_minmax(const vector<double>& numbers, double& min, double& max) {
         if (x > max)
             max = x;
     }
-    return true;
+    return false;
 }
 
 vector<size_t> make_histogram(const vector<double>& numbers, size_t bin_count) {
@@ -27,6 +27,7 @@ vector<size_t> make_histogram(const vector<double>& numbers, size_t bin_count) {
 
     for (size_t i = 0; i < numbers.size(); i++) {
         bool found = false;
+
         for (size_t j = 0; j < bin_count - 1 && !found; j++) {
             double lo = min + j * bin_size;
             double hi = min + (j + 1) * bin_size;
@@ -35,15 +36,9 @@ vector<size_t> make_histogram(const vector<double>& numbers, size_t bin_count) {
                 found = true;
             }
         }
+
         if (!found)
             bins[bin_count - 1]++;
     }
     return bins;
 }
-
-double compute_bin_size(const std::vector<double>& numbers, size_t bin_count) {
-    double min, max;
-    if (!find_minmax(numbers, min, max))
-        return 0.0;
-    return (max - min) / bin_count;
-}

histogram.h

@@ -2,5 +2,3 @@
 #include <vector>
 
 std::vector<size_t> make_histogram(const std::vector<double>& numbers, size_t bin_count);
-double compute_bin_size(const std::vector<double>& numbers, size_t bin_count);
-void show_histogram_svg(const std::vector<size_t>& bins, double bin_size, double min_val);

laba01upd3.cpp

@@ -1,10 +1,11 @@
 #include <iostream>
 #include <vector>
+#include <sstream>
+#include <string>
 #include "histogram.h"
-#include "histogram_internal.h"
 #include "svg.h"
 #include "text.h"
-#include <string>
+#include <curl/curl.h>
 
 using namespace std;
 
@@ -13,35 +14,62 @@ struct Input {
     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;
 }
 
-int main() {
-    auto in = input_data();
+Input download(const string& address) {
+    stringstream buffer;
+    CURL* curl = curl_easy_init();
 
-    double min_val, max_val;
-    find_minmax(in.numbers, min_val, max_val);
+    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);
+    }
 
-    double bin_size = compute_bin_size(in.numbers, in.bin_count);
-    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";
 
-    show_histogram_svg(bins, bin_size, min_val);
+    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

@@ -76,10 +76,16 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>
+      </AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
       <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalLibraryDirectories>
+      </AdditionalLibraryDirectories>
+      <AdditionalDependencies>
+      </AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
@@ -90,12 +96,18 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>
+      </AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
       <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalLibraryDirectories>
+      </AdditionalLibraryDirectories>
+      <AdditionalDependencies>
+      </AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
@@ -104,11 +116,18 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>C:\Users\brega\OneDrive\Рабочий стол\lab03\laba01upd3\curl\include</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
       <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalLibraryDirectories>C:\Users\brega\OneDrive\Рабочий стол\lab03\laba01upd3\curl\lib</AdditionalLibraryDirectories>
+      <AdditionalDependencies>;libcurl.dll.a;libcurl.dll.a;libcrypto.a;libssl.a</AdditionalDependencies>
     </Link>
+    <PostBuildEvent>
+      <Command>
+      </Command>
+    </PostBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
@@ -118,12 +137,15 @@
       <SDLCheck>true</SDLCheck>
       <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>C:\Users\brega\OneDrive\Рабочий стол\lab03\laba01upd3\curl\include</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
       <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalLibraryDirectories>C:\Users\brega\OneDrive\Рабочий стол\lab03\laba01upd3\curl\lib</AdditionalLibraryDirectories>
+      <AdditionalDependencies>libcurl.lib;%(AdditionalDependencies);libcurl.dll.a;libcurl.dll.a;libcrypto.a;libssl.a</AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>

svg.cpp

@@ -4,11 +4,11 @@ using namespace std;
 
 void svg_begin(double width, double height) {
     cout << "<?xml version='1.0' encoding='UTF-8'?>\n";
-    cout << "<svg "
-        << "width='" << width << "' "
-        << "height='" << height << "' "
-        << "viewBox='0 0 " << width << " " << height << "' "
-        << "xmlns='http://www.w3.org/2000/svg'>\n";
+    cout << "<svg ";
+    cout << "width='" << width << "' ";
+    cout << "height='" << height << "' ";
+    cout << "viewBox='0 0 " << width << " " << height << "' ";
+    cout << "xmlns='http://www.w3.org/2000/svg'>\n";
 }
 
 void svg_end() {
@@ -33,40 +33,38 @@ void svg_rect(double x, double y, double width, double height,
         << "' />\n";
 }
 
-void show_histogram_svg(const std::vector<size_t>& bins, double bin_size, double min_val) {
+void show_histogram_svg(const vector<size_t>& bins) {
     const double IMAGE_WIDTH = 400;
     const double IMAGE_HEIGHT = 300;
     const double TEXT_LEFT = 20;
     const double TEXT_BASELINE = 20;
     const double TEXT_WIDTH = 50;
     const double BIN_HEIGHT = 30;
-    const double VSPACE = BIN_HEIGHT + TEXT_BASELINE * 2 + 5;
+    const double BLOCK_WIDTH = 10;
 
     svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
 
     size_t max_count = 0;
-    for (size_t c : bins)
-        if (c > max_count)
-            max_count = c;
-    double max_width = IMAGE_WIDTH - TEXT_WIDTH - 100;
-
-    for (size_t j = 0; j < bins.size(); ++j) {
-        size_t count = bins[j];
-        double y = j * VSPACE;
+    for (size_t count : bins) {
+        if (count > max_count) {
+            max_count = count;
+        }
+    }
 
-        double width;
+    double max_width = IMAGE_WIDTH - TEXT_WIDTH;
+    double top = 0;
+    for (size_t count : bins) {
+        double bin_width;
         if (max_count > 0) {
-            width = static_cast<double>(count) / max_count * max_width;
+            bin_width = static_cast<double>(count) / max_count * max_width;
         }
         else {
-            width = 0.0;
+            bin_width = 0.0;
         }
 
-        svg_text(TEXT_LEFT, y + TEXT_BASELINE, to_string(count));
-        svg_rect(TEXT_WIDTH, y, width, BIN_HEIGHT, "blue", "blue");
-        double boundary = min_val + bin_size * (j + 1);
-        svg_text(TEXT_WIDTH,y + BIN_HEIGHT + TEXT_BASELINE,to_string(boundary)
-        );
+        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(count));
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "blue", "blue");
+        top += BIN_HEIGHT;
     }
 
     svg_end();

svg.h

@@ -9,4 +9,4 @@ void svg_text(double left, double baseline, const std::string& text);
 void svg_rect(double x, double y, double width, double height,
     const std::string& stroke = "black",
     const std::string& fill = "black");
-void show_histogram_svg(const std::vector<size_t>& bins, double bin_size, double min_val);
+void show_histogram_svg(const std::vector<size_t>& bins);