code: буфер

project/histogram.cpp

@@ -1,50 +1,43 @@
 #include "histogram.h"
 
-vector <size_t>
-make_histogram(const vector<double>& numbers, size_t & bin_count, size_t & number_count, size_t & max_count) {
+vector<size_t> make_histogram(const vector<double> &numbers, size_t bin_count) {
     double min, max;
-    find_minmax(numbers, min, max);
-    double bin_size = (max - min) / bin_count;
-    vector<size_t> bins(bin_count);
-    max_count = bins[0];
-    for (size_t i = 0; i < number_count; i++){
+     bool res = false;
+    find_minmax(numbers, min, max, res);
+    double bin_size = ( max - min ) / bin_count;
+    vector<size_t> bins ( 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++){
+        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)){
+            auto hi = min + ( j + 1 ) * bin_size;
+            if (lo <= numbers[i] && ( numbers[i] < hi )){
                 bins[j]++;
                 found = true;
             }
-            if (bins[j] > max_count){
-                max_count = bins[j];
-            }
-        }
-        if (!found){
-            bins[bin_count - 1]++;
-        }
-        if (bins[bin_count - 1] > max_count){
-            max_count = bins[bin_count - 1];
+            if ( !found ){
+            bins[bin_count-1]++;
         }
     }
     return bins;
 }
 
 void
-find_minmax(const vector<double>& numbers, double& min, double& max) {
-    if (!numbers.empty()) {
-        min = numbers[0];
-        max = numbers[0];
-    } else {
-        min = 0;
-        max = 0;
+find_minmax(const vector <double> &numbers, double &min, double &max, bool &res) {
+
+    if (numbers.size()==0){
+        res = true;
+        return;
     }
-    for (double x : numbers)
-    {
-        if (x < min){
+
+    min = numbers[0];
+    max = numbers[0];
+    for ( double x : numbers ){
+        if ( x < min ){
             min = x;
         }
-        else if (x > max){
+        }
+        else if ( x > max ){
             max = x;
         }
     }

project/histogram.h

@@ -6,9 +6,8 @@
 using namespace std;
 
 vector<size_t>
-make_histogram(const vector<double>& numbers, size_t & bin_count, size_t & number_count, size_t & max_count);
+make_histogram(const std::vector<double>& numbers, size_t bin_count);
 
 void
-find_minmax(const vector<double>& numbers, double& min, double& max);
-
+find_minmax(const vector <double> &numbers, double &min, double &max, bool &res);
 #endif // HISTOGRAM_H_INCLUDED

project/histogram_internal.h

@@ -0,0 +1,8 @@
+#ifndef HISTOGRAM_INTERNAL_H_INCLUDED
+#define HISTOGRAM_INTERNAL_H_INCLUDED
+#include <vector>
+
+void
+find_minmax(const std::vector<double>& numbers, double& min, double& max);
+
+#endif // HISTOGRAM_INTERNAL_H_INCLUDED

project/lab34.cbp

@@ -32,7 +32,18 @@
 			<Add option="-Wall" />
 			<Add option="-fexceptions" />
 		</Compiler>
+		<Unit filename="histogram.cpp" />
+		<Unit filename="histogram.h" />
+		<Unit filename="histogram_internal.h" />
 		<Unit filename="main.cpp" />
+		<Unit filename="percent.cpp" />
+		<Unit filename="percent.h" />
+		<Unit filename="show_histogram.cpp" />
+		<Unit filename="show_svg.h" />
+		<Unit filename="svg.cpp" />
+		<Unit filename="svg.h" />
+		<Unit filename="text.cpp" />
+		<Unit filename="text.h" />
 		<Extensions>
 			<lib_finder disable_auto="1" />
 		</Extensions>

project/main.cpp

@@ -2,41 +2,93 @@
 #include <vector>
 #include "histogram.h"
 #include "text.h"
+#include "svg.h"
+#include "show_svg.h"
+#include <curl/curl.h>
+#include <sstream>
+#include <string>
+
 using namespace std;
 
 struct Input {
     vector<double> numbers;
     size_t bin_count{};
-    size_t number_count{};
-    size_t max_count{};
 };
 
-Input
-input_data() {
-    Input in;
-    cerr << "Enter number count: ";
-    cin >> in.number_count;
+Input input_data(istream& stream, bool prompt) {
 
-    vector<double> numbers(in.number_count);
-    in.numbers.resize(in.number_count);
-    for (size_t i = 0; i < in.number_count; i++) {
-        cin >> in.numbers[i];
+    size_t number_count;
+    if (prompt) {
+        cerr << "Enter number count: ";
+    }
+    stream >> number_count;
+
+    Input in;
+    in.numbers.resize(number_count);
+
+
+   if (prompt){
+            cerr << "Enter numbers: ";
+    }
+    for (size_t i = 0; i < number_count; i++)
+    {
+        stream >> in.numbers[i];
     }
 
-    size_t bin_count;
-    cerr << "Enter bin count: ";
-    cin >> in.bin_count;
+    if (prompt){
+    cerr << "Enter number of bins: ";
+    }
+        stream >> in.bin_count;
+
 
-    size_t max_count;
-    in.max_count = 0;
     return in;
 }
 
-int main()
-{
-    Input in = input_data();
-    vector<size_t> bins = make_histogram(in.numbers, in.bin_count, in.number_count, in.max_count);
-    show_histogram_text(bins, in.max_count, in.bin_count);
-    return 0;
-
+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);
+    auto text = reinterpret_cast<const char*>(items);
+    buffer->write(text, data_size);
+    return data_size;
+}
+
+Input download(const string& address) {
+
+    stringstream buffer;
+
+    curl_global_init(CURL_GLOBAL_ALL);
+
+        CURL* curl = curl_easy_init();
+
+        if(curl) {
+            CURLcode res;
+            curl_easy_setopt(curl, CURLOPT_URL, address.c_str());
+            curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
+            curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
+            res = curl_easy_perform(curl);
+
+            if (res != CURLE_OK) {
+                curl_easy_strerror(res);
+                exit(1);
+            }
+            curl_easy_cleanup(curl);
+        }
+        return input_data(buffer, false);
+}
+
+
+
+
+int main(int argc, char* argv[]){
+
+    Input in;
+    if (argc > 1) {
+        in = download(argv[1]);
+    } else {
+        in = input_data(cin, true);
+    }
+{
+    auto bins = make_histogram(in.numbers, in.bin_count);
+
+    show_histogram_svg(bins);
 }

project/percent.cpp

@@ -0,0 +1,16 @@
+#include "percent.h"
+
+#include <vector>
+using namespace std;
+
+void
+percent(const vector<size_t>& bins, vector<size_t>&bins_percent){
+    size_t number_count = 0;
+    size_t bin_count = bins.size();
+    for (size_t bin : bins){
+        number_count=number_count+bin;
+    }
+    for (int i=0; i<bin_count; i++){
+        bins_percent.push_back(bins[i]*100/number_count);
+    }
+}

project/percent.h

@@ -0,0 +1,10 @@
+#ifndef PERCENT_H_INCLUDED
+#define PERCENT_H_INCLUDED
+
+#include <vector>
+using namespace std;
+
+void
+percent(const vector<size_t>& bins, vector<size_t>&bins_percent);
+
+#endif // PERCENT_H_INCLUDED

project/show_histogram.cpp

@@ -0,0 +1,44 @@
+#include "svg.h"
+
+
+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(IMAGE_WIDTH, IMAGE_HEIGHT);
+
+
+    double top = 0;
+    size_t longest;
+    vector<size_t>bins_percent{};
+
+
+    if (!bins.empty()) {
+        longest = bins[0];
+    } else {
+        longest = 0;
+    }
+    for (size_t bin : bins) {
+        if (bin > longest) {
+            longest = bin;
+        }
+    }
+    for (size_t bin : bins) {
+            const double bin_width = (IMAGE_WIDTH - TEXT_WIDTH) * (bin) / (longest);
+            if (bin == longest){
+                svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
+                svg_rect(TEXT_WIDTH, top, IMAGE_WIDTH - TEXT_WIDTH, BIN_HEIGHT, "#000000", "#ff00a2");
+                top += BIN_HEIGHT;
+            } else{
+                svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
+                svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "#000000", "#ff00a2");
+                top += BIN_HEIGHT;
+            }
+    }
+    svg_end();
+}

project/show_svg.h

@@ -0,0 +1,10 @@
+#ifndef SHOW_SVG_H_INCLUDED
+#define SHOW_SVG_H_INCLUDED
+
+#include <vector>
+using namespace std;
+
+void
+show_histogram_svg(const vector<size_t>& bins);
+
+#endif // SHOW_SVG_H_INCLUDED

project/svg.cpp

@@ -0,0 +1,30 @@
+#include <iostream>
+#include <vector>
+#include <string>
+#include "svg.h"
+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, string fill){
+    cout << "<rect x='"<< x <<"' y='"<< y <<"' width='"<< width <<"' height='"<< height <<"' stroke='"<< stroke <<"' fill='"<< fill <<"' />";
+}

project/svg.h

@@ -0,0 +1,13 @@
+#ifndef SVG_H_INCLUDED
+#define SVG_H_INCLUDED
+#include <vector>
+#include <iostream>
+using namespace std;
+void svg_begin(double width, double height);
+
+void svg_end();
+
+void svg_text(double left, double baseline, string text);
+
+void svg_rect(double x, double y, double width, double height, string stroke = "black", string fill = "black");;
+#endif // SVG_H_INCLUDED

project/unittest.cbp

@@ -0,0 +1,43 @@
+<?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="percent.cpp" />
+		<Unit filename="percent.h" />
+		<Unit filename="unittest.cpp" />
+		<Extensions>
+			<lib_finder disable_auto="1" />
+		</Extensions>
+	</Project>
+</CodeBlocks_project_file>

project/unittest.cpp

@@ -0,0 +1,40 @@
+#define DOCTEST_CONFIG_NO_MULTITHREADING
+#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
+#include "doctest.h"
+#include "histogram_internal.h"
+
+TEST_CASE("distinct empty") {
+    double min = 0;
+    double max = 0;
+    find_minmax({}, min, max);
+    CHECK(min == 0);
+    CHECK(max == 0);
+}
+    TEST_CASE("distinct positive numbers") {
+    double min = 0;
+    double max = 0;
+    find_minmax({1, 2}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 2);
+}
+TEST_CASE("distinct single") {
+    double min = 0;
+    double max = 0;
+    find_minmax({1}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 1);
+}
+TEST_CASE("distinct same") {
+    double min = 0;
+    double max = 0;
+    find_minmax({1,1,1,1,1,1,1,1,1}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 1);
+}
+TEST_CASE("distinct negative numbers") {
+    double min = 0;
+    double max = 0;
+    find_minmax({-1.5,-2,-3,-4}, min, max);
+    CHECK(min == -4);
+    CHECK(max == -1.5);
+}