code:Защита

.gitignore

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

histogram.cpp

@@ -0,0 +1,44 @@
+#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()) {
+        return false;
+    }
+    min = numbers[0];
+    max = numbers[0];
+    for (double x : numbers) {
+        if (x < min)
+            min = x;
+        if (x > max)
+            max = x;
+    }
+    return false;
+}
+
+vector<size_t> make_histogram(const vector<double>& numbers, size_t bin_count) {
+    vector<size_t> bins(bin_count, 0);
+    double min, max;
+    find_minmax(numbers, min, max);
+    double bin_size = (max - min) / 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;
+            if (numbers[i] >= lo && numbers[i] < hi) {
+                bins[j]++;
+                found = true;
+            }
+        }
+
+        if (!found)
+            bins[bin_count - 1]++;
+    }
+    return bins;
+}

histogram.h

@@ -0,0 +1,4 @@
+#pragma once
+#include <vector>
+
+std::vector<size_t> make_histogram(const std::vector<double>& numbers, size_t bin_count);

histogram_internal.h

@@ -0,0 +1,5 @@
+
+#pragma once
+#include <vector>
+
+bool find_minmax(const std::vector<double>& numbers, double& min, double& max);

laba01upd3.cpp

@@ -1,75 +1,75 @@
 #include <iostream>
 #include <vector>
+#include <sstream>
+#include <string>
+#include "histogram.h"
+#include "svg.h"
+#include "text.h"
+#include <curl/curl.h>
+
 using namespace std;
 
-const size_t SCREEN_WIDTH = 80;
+struct Input {
-const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
+    vector<double> numbers;
+    size_t bin_count{};
+};
 
-int main()
+Input input_data(istream& in, bool prompt) {
-{
+    if (prompt) cerr << "Enter number count: ";
     size_t number_count;
-    cout << "Enter number count: ";
+    in >> number_count;
-    cin >> number_count;
+    Input data;
-    vector<double> numbers(number_count);
+    data.numbers.resize(number_count);
-    for (int i = 0; i < number_count; i++) {
+    if (prompt) cerr << "Enter " << number_count << " numbers: ";
-        cin >> numbers[i];
-    }
-    size_t bin_count; //количество интервалов на которые мы разбиваем
-    cout << "Enter bin count: ";
-    cin >> bin_count;
-    vector<size_t> bins(bin_count);
-    double min = numbers[0];
-    double max = numbers[0];
-    for (double x : numbers) {
-        if (x < min) {
-            min = x;
-        }
-        else if (x > max) {
-            max = x;
-        }
-    }
-    double bin_size = (max - min) / bin_count;
     for (size_t i = 0; i < number_count; i++) {
-        bool found = false;
+        in >> data.numbers[i];
-        for (size_t j = 0; (j < bin_count - 1) && !found; j++) {
-            auto lo = min + j * bin_size;
-            auto hi = min + (j + 1) * bin_size;
-            if ((lo <= numbers[i]) && (numbers[i] < hi)) {
-                bins[j]++;
-                found = true;
-            }
-        }
-        if (!found) {
-            bins[bin_count - 1]++;
-        }
-    }
-    double max_count = bins[0];
-    for (double x : bins) {
-        if (x > max_count) {
-            max_count = x;
-        }
-    }
-    for (int j = 0; j < bin_count; j++) {
-        if (bins[j] < 100) {
-            cout << " ";
-        }
-        if (bins[j] < 10) {
-            cout << " ";
-        }
-        cout << bins[j] << "|";
-
-        size_t height;
-        if (max_count > MAX_ASTERISK) {
-            size_t count = bins[j];
-            height = 76 * (static_cast<double>(count) / max_count);
-        }
-        else {
-            height = bins[j];
-        }
-
-        for (size_t i = 0; i < height; i++) {
-            cout << "*";
-        }
-        cout << endl;
     }
+    if (prompt) cerr << "Enter bin count: ";
+    in >> data.bin_count;
+    return data;
+}
+
+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);
+    }
+
+    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 @@
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+    <None Include=".gitignore" />
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+    <ClInclude Include="histogram.h" />
+    <ClInclude Include="histogram_internal.h" />
+    <ClInclude Include="svg.h" />
+    <ClInclude Include="text.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
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+</Project>

laba01upd3.vcxproj.filters

@@ -0,0 +1,48 @@
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+  <ItemGroup>
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+      <Filter>Исходные файлы</Filter>
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+  <ItemGroup>
+    <None Include=".gitignore" />
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+      <Filter>Файлы заголовков</Filter>
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+    <ClInclude Include="text.h">
+      <Filter>Файлы заголовков</Filter>
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+      <Filter>Файлы заголовков</Filter>
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+    <ClInclude Include="svg.h">
+      <Filter>Файлы заголовков</Filter>
+    </ClInclude>
+  </ItemGroup>
+</Project>

svg.cpp

@@ -0,0 +1,71 @@
+#include "svg.h"
+#include <string>
+using namespace std;
+
+void svg_begin(double width, double height) {
+    cout << "<?xml version='1.0' encoding='UTF-8'?>\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() {
+    cout << "</svg>\n";
+}
+
+void svg_text(double left, double baseline, const string& text) {
+    cout << "<text x='" << left
+        << "' y='" << baseline
+        << "'>" << text
+        << "</text>\n";
+}
+
+void svg_rect(double x, double y, double width, double height,
+    const string& stroke, const string& fill) {
+    cout << "<rect x='" << x
+        << "' y='" << y
+        << "' width='" << width
+        << "' height='" << height
+        << "' stroke='" << stroke
+        << "' fill='" << fill
+        << "' />\n";
+}
+
+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 BLOCK_WIDTH = 10;
+
+    svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
+
+    size_t max_count = 0;
+    for (size_t count : bins) {
+        if (count > max_count) {
+            max_count = count;
+        }
+    }
+
+    double max_width = IMAGE_WIDTH - TEXT_WIDTH;
+    double top = 0;
+    for (size_t count : bins) {
+        double bin_width;
+        if (max_count > 0) {
+            bin_width = static_cast<double>(count) / max_count * max_width;
+        }
+        else {
+            bin_width = 0.0;
+        }
+
+        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

@@ -0,0 +1,12 @@
+#pragma once
+#include <iostream>
+#include <string>
+#include <vector>
+
+void svg_begin(double width, double height);
+void svg_end();
+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);

text.cpp

@@ -0,0 +1,33 @@
+#include "text.h"
+#include <iostream>
+#include <vector>
+using namespace std;
+
+const size_t SCREEN_WIDTH = 80;
+const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
+
+void show_histogram_text(const vector<size_t>& bins) {
+    size_t max_count = bins[0];
+    for (size_t count : bins) {
+        if (count > max_count)
+            max_count = count;
+    }
+    for (size_t j = 0; j < bins.size(); j++) {
+        if (bins[j] < 100) cerr << " ";
+        if (bins[j] < 10)  cerr << " ";
+        cerr << bins[j] << "|";
+
+        size_t height = 0;
+        if (max_count > MAX_ASTERISK) {
+            height = static_cast<size_t>(
+                static_cast<double>(bins[j]) / max_count * MAX_ASTERISK
+                );
+        }
+        else {
+            height = bins[j];
+        }
+        for (size_t i = 0; i < height; i++)
+            cerr << "*";
+        cerr << endl;
+    }
+}

text.h

@@ -0,0 +1,5 @@
+#pragma once
+#include <vector>
+
+
+void show_histogram_text(const std::vector<size_t>& bins);

unittest/histogram_internal.h

@@ -0,0 +1,6 @@
+#pragma once
+#include <vector>
+
+bool find_minmax(const std::vector<double>& numbers,
+    double& min,
+    double& max);

unittest/unittest.cpp

@@ -0,0 +1,37 @@
+#define DOCTEST_CONFIG_NO_MULTITHREADING
+#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
+#include "doctest.h"
+#include "histogram_internal.h"
+
+TEST_CASE("distinct positive numbers") {
+    double min = 0, max = 0;
+    find_minmax({ 1, 2 }, min, max);
+    CHECK(min == 1);
+    CHECK(max == 2);
+}
+TEST_CASE("empty vector") {
+    double min = 0, max = 0;
+    CHECK(!find_minmax({}, min, max));
+    
+}
+
+TEST_CASE("single element") {
+    double min = 0, max = 0;
+    find_minmax({ 5.5 }, min, max);
+    CHECK(min == 5.5);
+    CHECK(max == 5.5);
+}
+
+TEST_CASE("all negative") {
+    double min = 0, max = 0;
+    find_minmax({ -1, -5, -3 }, min, max);
+    CHECK(min == -5);
+    CHECK(max == -1);
+}
+
+TEST_CASE("all equal") {
+    double min = 0, max = 0;
+    find_minmax({ 7, 7, 7 }, min, max);
+    CHECK(min == 7);
+    CHECK(max == 7);
+}

unittest/unittest.sln

@@ -0,0 +1,31 @@
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+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
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+		{07F838BF-1065-4D95-9EAC-CA2A1E9B6597}.Debug|x86.Build.0 = Debug|Win32
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+		{07F838BF-1065-4D95-9EAC-CA2A1E9B6597}.Release|x64.Build.0 = Release|x64
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