.gitignore

@@ -1,4 +0,0 @@
-bin/
-obj/
-*.o
-*.exe

histogram.cpp

@@ -0,0 +1,65 @@
+#include "histogram.h"
+#include <iostream>
+#include <vector>
+using namespace std;
+
+//std::vector<size_t>
+bool find_minmax(const vector<double>& numbers, double& minN, double& maxN)
+{
+    if (numbers.empty()) {
+        minN = maxN = 0;
+        return false;
+    }
+    minN = numbers[0];
+    maxN = numbers[0];
+
+    for (double x: numbers)
+    {
+        if (minN > x)
+        {
+            minN = x;
+        }
+        if (maxN < x)
+        {
+            maxN = x;
+        }
+    }
+    return true;
+}
+
+vector<size_t> make_histogram(const vector<double>& numbers, size_t bin_count)
+{
+    double minN, maxN;
+    find_minmax( numbers, minN, maxN);
+
+    vector <size_t> bins(bin_count);
+    double diff = (maxN - minN) / bin_count;
+    size_t max_count = 0;
+    for (size_t i = 0; i <numbers.size() ; i++)
+    {
+        bool found = false;
+        for (size_t j = 0; (j < bin_count - 1) && !found; j++)
+        {
+            auto lo = minN + j * diff;
+            auto hi = minN + (j + 1) * diff;
+            if ((lo <= numbers[i]) && (hi > numbers[i]))
+            {
+                bins[j]++;
+                if (bins[j] > max_count)
+                {
+                    max_count = bins[j];
+                }
+                found = true;
+            }
+        }
+        if(!found)
+        {
+            bins[bin_count - 1]++;
+            if (bins[bin_count - 1] > max_count)
+            {
+                max_count = bins[bin_count - 1];
+            }
+        }
+    }
+    return bins;
+}

histogram.h

@@ -0,0 +1,9 @@
+#ifndef HISTOGRAM_H_INCLUDED
+#define HISTOGRAM_H_INCLUDED
+
+#include <vector>
+
+std::vector<size_t>
+make_histogram(const std::vector<double>& numbers, size_t bin_count);
+
+#endif // HISTOGRAM_H_INCLUDED

histogram_internal.h

@@ -0,0 +1,9 @@
+#ifndef HISTOGRAM_INTERNAL_H_INCLUDED
+#define HISTOGRAM_INTERNAL_H_INCLUDED
+
+#include <vector>
+
+//std::vector<size_t>
+bool find_minmax(const std::vector<double>& numbers, double& minN, double& maxN);
+
+#endif // HISTOGRAM_INTERNAL_H_INCLUDED

lab01.cbp

@@ -31,10 +31,27 @@
 		<Compiler>
 			<Add option="-Wall" />
 			<Add option="-fexceptions" />
+			<Add directory="curl/include" />
 		</Compiler>
+		<Linker>
+			<Add library="curl/lib/libcurl.dll.a" />
+			<Add directory="curl/lib" />
+		</Linker>
+		<Unit filename=".gitignore" />
+		<Unit filename="histogram.cpp" />
+		<Unit filename="histogram.h" />
+		<Unit filename="histogram_internal.h">
+			<Option target="&lt;{~None~}&gt;" />
+		</Unit>
 		<Unit filename="main.cpp" />
-		<Extensions>
+		<Unit filename="svg.cpp" />
-			<lib_finder disable_auto="1" />
+		<Unit filename="svg.h">
-		</Extensions>
+			<Option target="&lt;{~None~}&gt;" />
+		</Unit>
+		<Unit filename="text.cpp" />
+		<Unit filename="text.h">
+			<Option target="&lt;{~None~}&gt;" />
+		</Unit>
+		<Extensions />
 	</Project>
 </CodeBlocks_project_file>

lab01.layout

@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
-<CodeBlocks_layout_file>
-	<FileVersion major="1" minor="0" />
-	<ActiveTarget name="Debug" />
-	<File name="main.cpp" open="1" top="1" tabpos="1" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
-		<Cursor>
-			<Cursor1 position="1461" topLine="0" />
-		</Cursor>
-	</File>
-</CodeBlocks_layout_file>

main.cpp

@@ -1,68 +1,96 @@
 #include <iostream>
 #include <vector>
+#include "histogram.h"
+#include "text.h"
+#include "svg.h"
+#include <curl/curl.h>
+#include <sstream>
+#include <string>
+
 using namespace std;
-int main()
+
+struct Input
 {
-    size_t number_count,bin_count;
+    vector<double> numbers;
+    size_t bin_count{};
+};
 
-    cout << "Enter number count: ";
+Input
-    cin >> number_count;
+input_data(istream& in, bool prompt)
+{
+    Input cin;
+    string numbCntPrmt, numbsPrmt, binCntPrmt;
+    if (prompt == true) {
+        numbCntPrmt = "Enter number count: ";
+        numbsPrmt = "Enter numbers: ";
+        binCntPrmt = "Enter bin count: ";
+    }
+    size_t number_count;
+    cerr << numbCntPrmt;
+    in >> number_count;
+    cin.numbers.resize(number_count);
 
     vector<double> numbers(number_count);
+
+    cerr << numbsPrmt;
     for (size_t i = 0; i < number_count; i++)
     {
-        cout <<"Enter number: ";
+        in >> cin.numbers[i];
-        cin >> numbers[i];
     }
-    cout <<"Enter number of bins: ";
-    cin >> bin_count;
 
-    vector<size_t> bins(bin_count);
+    cerr << binCntPrmt;
-    double min = numbers[0];
+    in >> cin.bin_count;
-    double max = numbers[0];
+    return cin;
-    for (double x : numbers) {
-        if (x < min) {
-            min = x;
-        }
-        else if (x > max) {
-            max = x;
 }
+
+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);
+     buffer->write(reinterpret_cast<const char*>(items), data_size);
+    return data_size;
 }
 
+Input
+download(const string& address) {
+    stringstream buffer;
 
-    double bin_size = (max - min) / bin_count;
+    CURL* curl = curl_easy_init();
-    for (size_t i = 0; i < number_count; i++)
+    if(curl){
-    {
+        CURLcode res;
-        bool found = false;
+        curl_easy_setopt(curl, CURLOPT_URL, address.c_str());
-        for (size_t j = 0; (j < bin_count - 1) && !found; j++)
+        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
-        {
+        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
-            auto low = min + j * bin_size;
+
-            auto high = min + (j + 1) * bin_size;
+        res = curl_easy_perform(curl);
-            if ((low <= numbers[i]) && (numbers[i] < high))
+
-            {
+        if(!res) {
-                bins[j]++;
+            curl_off_t ul;
-                found = true;
+            res = curl_easy_getinfo(curl, CURLINFO_SIZE_DOWNLOAD_T, &ul);
-            }
+            if(!res) {
-        }
+                cerr<<"Uploaded bytes" << ul << endl;
-        if (!found)
-        {
-            bins[bin_count - 1]++;
             }
         }
 
-    /*for (size_t i = 0; i < bins.size(); ++i) {
+        if (res != 0){
-        cout << "Bin " << i + 1 << ": " << bins[i] << " |";
+            cerr << curl_easy_strerror(res);
-        for (size_t j = 0; j < bins[i]; ++j) {
+            exit(1);
-            cout << "*";
         }
-        cout << endl;
+        curl_easy_cleanup(curl);
+    }
+    return input_data(buffer, false);
 }
 
-    return 0;*/
+int main(int argc, char* argv[])
-
+{
-
+    CURL* curl = curl_easy_init();
-
+    Input input;
-
+    if (argc > 1) {
+        input = download(argv[1]);
+    } else {
 
+        input = input_data(cin, true);
     }
 
+    auto bins = make_histogram(input.numbers, input.bin_count);
+    show_histogram_svg(bins);
+}

svg.cpp

@@ -0,0 +1,92 @@
+#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, string text) {
+    cout << "<text x='" << left << "' y='" << baseline << "'>" << text << "</text>";
+}
+
+
+void svg_rect(double x, double y, double width, double height, string stroke = "black", string fill = "black")
+{
+    cout << "<rect x='" << x << "' y='" << y << "' width='" << width
+              << "' height='" << height << "' stroke='" << stroke << "' fill='" << fill << " '/>";
+}
+
+
+
+
+//Çàùèòà
+/*
+void svg_rect(double x, double y, double width, double height, string stroke = "black", string fill = "black", double fill_opacity = 1.0) {
+    cout << "<rect x='" << x << "' y='" << y << "' width='" << width
+         << "' height='" << height << "' stroke='" << stroke
+         << "' fill='" << fill << "' fill-opacity='" << fill_opacity << "'/>";
+}
+
+void show_histogram_svg(const vector<size_t>& bins) {
+    const auto IMAGE_WIDTH = 400;
+    const auto IMAGE_HEIGHT = 300;
+    const auto TEXT_LEFT = 20;
+    const auto TEXT_BASELINE = 20;
+    const auto TEXT_WIDTH = 50;
+    const auto BIN_HEIGHT = 30;
+    const auto BLOCK_WIDTH = 10;
+
+    size_t max_count = *max_element(bins.begin(), bins.end());
+    if (max_count == 0) max_count = 1;
+
+    svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
+    double top = 0;
+
+    for (size_t bin : bins) {
+        const double bin_width = min(static_cast<double>(BLOCK_WIDTH * bin), static_cast<double>(IMAGE_WIDTH - TEXT_WIDTH));
+        double opacity = static_cast<double>(bin) / max_count;
+
+        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT,
+                "blue", "green", opacity);
+        top += BIN_HEIGHT;
+    }
+
+    svg_end();
+}
+*/
+
+void show_histogram_svg(const vector<size_t>& bins) {
+    const auto IMAGE_WIDTH = 400;
+    const auto IMAGE_HEIGHT = 300;
+    const auto TEXT_LEFT = 20;
+    const auto TEXT_BASELINE = 20;
+    const auto TEXT_WIDTH = 50;
+    const auto BIN_HEIGHT = 30;
+    const auto BLOCK_WIDTH = 10;
+
+    svg_begin(400, 300);
+    double top = 0;
+
+    for (size_t bin : bins) {
+        const double bin_width = BLOCK_WIDTH * bin;
+        if(bin_width> IMAGE_WIDTH) {
+            const double bin_width= IMAGE_WIDTH - TEXT_WIDTH;
+        }
+        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "blue", "green");
+        top += BIN_HEIGHT;
+    }
+    svg_end();
+}
+

svg.h

@@ -0,0 +1,8 @@
+#ifndef SVG_H_INCLUDED
+#define SVG_H_INCLUDED
+#include <iostream>
+#include <vector>
+
+void show_histogram_svg(const std::vector<size_t> &bins);
+
+#endif // SVG_H_INCLUDED

text.cpp

@@ -0,0 +1,54 @@
+#include "text.h"
+#include <iostream>
+#include <vector>
+using namespace std;
+
+void show_histogram_text(const vector <size_t>& bins,size_t bin_count, size_t max_count)
+{
+    const size_t SCREEN_WIDTH = 80;
+    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
+
+    bool scaling = false;
+
+    if (max_count > MAX_ASTERISK)
+    {
+        scaling = true;
+    }
+
+    for (size_t i = 0; i < bin_count; i++)
+    {
+        if (bins[i] < 10)
+        {
+            cout << "  ";
+        }
+        else if (bins[i] < 100)
+        {
+            cout << " ";
+        }
+        else
+        {
+            cout << "";
+        }
+        cout << bins[i] << '|';
+
+        size_t number_of_stars = bins[i];
+
+        if (scaling)
+        {
+            if (bins[i] == max_count)
+            {
+                number_of_stars = MAX_ASTERISK * 1.0;
+            }
+            else
+            {
+                number_of_stars = MAX_ASTERISK * (static_cast<double>(bins[i]) / max_count);
+            }
+        }
+
+        for (size_t j = 0; j < number_of_stars; j++)
+        {
+            cout << '*';
+        }
+        cout << endl;
+    }
+}

text.h

@@ -0,0 +1,6 @@
+#ifndef TEXT_H_INCLUDED
+#define TEXT_H_INCLUDED
+#include <vector>
+void show_histogram_text(const std::vector <size_t>& bins,size_t bin_count, size_t max_count);
+
+#endif // TEXT_H_INCLUDED

unittest.cbp

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
+<CodeBlocks_project_file>
+	<FileVersion major="1" minor="6" />
+	<Project>
+		<Option title="unittest" />
+		<Option pch_mode="2" />
+		<Option compiler="gcc" />
+		<Build>
+			<Target title="Debug">
+				<Option output="bin/Debug/unittest" prefix_auto="1" extension_auto="1" />
+				<Option object_output="obj/Debug/" />
+				<Option type="1" />
+				<Option compiler="gcc" />
+				<Compiler>
+					<Add option="-g" />
+				</Compiler>
+			</Target>
+			<Target title="Release">
+				<Option output="bin/Release/unittest" prefix_auto="1" extension_auto="1" />
+				<Option object_output="obj/Release/" />
+				<Option type="1" />
+				<Option compiler="gcc" />
+				<Compiler>
+					<Add option="-O2" />
+				</Compiler>
+				<Linker>
+					<Add option="-s" />
+				</Linker>
+			</Target>
+		</Build>
+		<Compiler>
+			<Add option="-Wall" />
+		</Compiler>
+		<Unit filename="histogram.cpp" />
+		<Unit filename="histogram_internal.h" />
+		<Unit filename="unittest.cpp" />
+		<Extensions>
+			<lib_finder disable_auto="1" />
+		</Extensions>
+	</Project>
+</CodeBlocks_project_file>

unittest.cpp

@@ -0,0 +1,48 @@
+#define DOCTEST_CONFIG_NO_MULTITHREADING
+#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
+#include "doctest.h"
+#include "histogram_internal.h"
+#include <vector>
+
+TEST_CASE("distinct positive numbers") {
+    double min = 0;
+    double max = 0;
+    find_minmax({1, 2}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 2);
+    CHECK(find_minmax({1, 2}, min, max));
+}
+
+TEST_CASE("distinct negative numbers")
+{
+    double min = 0;
+    double max = 0;
+    find_minmax({-1, -2}, min, max);
+    CHECK(min == -2);
+    CHECK(max == -1);
+    CHECK(find_minmax({-1, -2}, min, max));
+}
+TEST_CASE("vector 1 element")
+{
+    double min = 0;
+    double max = 0;
+    find_minmax({1}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 1);
+    CHECK(find_minmax({1}, min, max));
+}
+TEST_CASE("distinct equals numbers")
+{
+    double min = 0;
+    double max = 0;
+    find_minmax({1, 1}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 1);
+    CHECK(find_minmax({1, 1}, min, max));
+}
+TEST_CASE("distinct empty vector")
+{
+    double min = -1;
+    double max = -1;
+    CHECK(!find_minmax({}, min, max));
+}