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.gitignore

@@ -4,3 +4,4 @@
 /lab1.layout
 /unittest.layout
 /unittest.depend
+/curl

histogram.cpp

@@ -2,23 +2,23 @@
 #include <iostream>
 #include <limits>
 
-Input input_data() {
-    Input in;
+Input input_data(std::istream& in, bool prompt) {
+    Input data;
     size_t number_count;
 
-    std::cerr << "Enter number count: ";
-    std::cin >> number_count;
+    if (prompt) std::cerr << "Enter number count: ";
+    in >> number_count;
 
-    in.numbers.resize(number_count);
-    std::cerr << "Enter " << number_count << " numbers: ";
+    data.numbers.resize(number_count);
+    if (prompt) std::cerr << "Enter " << number_count << " numbers: ";
     for (size_t i = 0; i < number_count; i++) {
-        std::cin >> in.numbers[i];
+        in >> data.numbers[i];
     }
 
-    std::cerr << "Enter bin count: ";
-    std::cin >> in.bin_count;
+    if (prompt) std::cerr << "Enter bin count: ";
+    in >> data.bin_count;
 
-    return in;
+    return data;
 }
 
 void find_minmax(const std::vector<double>& numbers, double& min, double& max) {

histogram.h

@@ -1,12 +1,11 @@
 #pragma once
-
 #include <vector>
+#include <iostream>
 
 struct Input {
     std::vector<double> numbers;
     size_t bin_count{};
 };
 
-Input input_data();
+Input input_data(std::istream& in, bool prompt);
 std::vector<size_t> make_histogram(const std::vector<double>& numbers, size_t bin_count);
-void show_histogram_text(const std::vector<size_t>& bins);

lab1.cbp

@@ -32,6 +32,9 @@
 			<Add option="-Wall" />
 			<Add option="-fexceptions" />
 		</Compiler>
+		<Linker>
+			<Add option="-static-libstdc++" />
+		</Linker>
 		<Unit filename="histogram.cpp" />
 		<Unit filename="histogram.h">
 			<Option target="Debug" />
@@ -40,6 +43,8 @@
 			<Option target="Debug" />
 		</Unit>
 		<Unit filename="main.cpp" />
+		<Unit filename="svg.cpp" />
+		<Unit filename="svg.h" />
 		<Extensions>
 			<lib_finder disable_auto="1" />
 		</Extensions>

main.cpp

@@ -1,9 +1,55 @@
 #include "histogram.h"
 #include "svg.h"
+#include <curl/curl.h>
+#include <sstream>
+#include <string>
 
-int main() {
-    auto in = input_data();
-    auto bins = make_histogram(in.numbers, in.bin_count);
+
+size_t write_data(void* ptr, size_t size, size_t nmemb, std::stringstream* stream) {
+    size_t data_size = size * nmemb;
+    stream->write(static_cast<const char*>(ptr), data_size);
+    return data_size;
+}
+
+
+Input download(const std::string& url) {
+    std::stringstream buffer;
+
+    CURL* curl = curl_easy_init();
+    if (!curl) {
+        std::cerr << "Failed to initialize cURL\n";
+        exit(1);
+    }
+
+    curl_easy_setopt(curl, CURLOPT_URL, url.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) {
+        std::cerr << "cURL error: " << curl_easy_strerror(res) << "\n";
+        exit(1);
+    }
+
+    curl_easy_cleanup(curl);
+    return input_data(buffer, false);
+}
+
+int main(int argc, char* argv[]) {
+    curl_global_init(CURL_GLOBAL_ALL);
+
+    Input input;
+    if (argc > 1) {
+        std::cout << "Êîëè÷åñòâî àðãóìåíòîâ: " << argc << std::endl;
+        for (int i = 0; i < argc; ++i) {
+            std::cout << "argv[" << i << "] = " << argv[i] << std::endl;
+        }
+        return 0;
+    }
+
+    auto bins = make_histogram(input.numbers, input.bin_count);
     show_histogram_svg(bins);
+
+    curl_global_cleanup();
     return 0;
 }

svg.cpp

@@ -23,7 +23,7 @@ void svg_rect(double x, double y, double width, double height,
               << "stroke='" << stroke << "' fill='" << fill << "' />\n";
 }
 
-void show_histogram_svg(const std::vector<size_t>& bins) {
+/*void show_histogram_svg(const std::vector<size_t>& bins) {
     const size_t IMAGE_WIDTH = 400;
     const size_t IMAGE_HEIGHT = 300;
     const size_t TEXT_LEFT = 20;
@@ -47,5 +47,28 @@ void show_histogram_svg(const std::vector<size_t>& bins) {
         top += BIN_HEIGHT;
     }
 
+    svg_end();
+}*/
+void show_histogram_svg(const std::vector<size_t>& bins) {
+    size_t max_count = 0;
+    for (size_t count : bins) {
+        if (count > max_count) max_count = count;
+    }
+
+    const size_t IMAGE_HEIGHT = IMAGE_PADDING * 2 + max_count * 10 + TEXT_HEIGHT;
+
+    svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
+
+    double x = IMAGE_PADDING;
+    const double y_base = IMAGE_HEIGHT - IMAGE_PADDING - TEXT_HEIGHT;
+
+    for (size_t bin : bins) {
+        const double height = bin * 10;
+        svg_rect(x, y_base - height, BAR_WIDTH, height, "black", "#aaffaa");
+        svg_text(x + BAR_WIDTH/2 - 5, y_base + TEXT_HEIGHT - 5, std::to_string(bin));
+
+        x += BAR_WIDTH + 10;
+    }
+
     svg_end();
 }

svg.h

@@ -2,6 +2,10 @@
 #include <vector>
 #include <string>
 
+const size_t IMAGE_WIDTH = 400;
+const size_t IMAGE_PADDING = 20;
+const size_t BAR_WIDTH = 30;
+const size_t TEXT_HEIGHT = 20;
 void svg_begin(double width, double height);
 void svg_end();
 void svg_text(double left, double baseline, const std::string& text);

unittest.cbp

@@ -31,6 +31,10 @@
 		<Compiler>
 			<Add option="-Wall" />
 		</Compiler>
+		<Unit filename="doctest.h" />
+		<Unit filename="histogram.cpp" />
+		<Unit filename="histogram_internal.h" />
+		<Unit filename="unittest.cpp" />
 		<Extensions>
 			<lib_finder disable_auto="1" />
 		</Extensions>

unittest.cpp

@@ -10,3 +10,36 @@ TEST_CASE("distinct positive numbers") {
     CHECK(min == 1);
     CHECK(max == 2);
 }
+
+TEST_CASE("empty vector") {
+    double min = 0;
+    double max = 0;
+    find_minmax({}, min, max);
+    CHECK(min == std::numeric_limits<double>::max());
+    CHECK(max == std::numeric_limits<double>::lowest());
+}
+
+TEST_CASE("single element vector") {
+    double min = 0;
+    double max = 0;
+    find_minmax({42}, min, max);
+    CHECK(min == 42);
+    CHECK(max == 42);
+}
+
+TEST_CASE("negative numbers") {
+    double min = 0;
+    double max = 0;
+    find_minmax({-5, -1, -3}, min, max);
+    CHECK(min == -5);
+    CHECK(max == -1);
+}
+
+TEST_CASE("identical elements") {
+    double min = 0;
+    double max = 0;
+    find_minmax({7, 7, 7}, min, max);
+    CHECK(min == 7);
+    CHECK(max == 7);
+}
+//wewger