code: lab4 add curl file

histogram.cpp

@@ -1,8 +1,8 @@
 #include "histogram.h"
 #include <vector>
-using std::vector;
-// Ïîèñê ìèíèìóìà è ìàêñèìóìà
-void find_minmax(const std::vector<double>& numbers, double& min, double& max) {
+using namespace std;
+
+void find_minmax(const vector<double>& numbers, double& min, double& max) {
     if (numbers.empty())
     {
         min = 0;
@@ -17,21 +17,18 @@ void find_minmax(const std::vector<double>& numbers, double& min, double& max) {
     }
 }
 
-// Ðàñ÷¸ò ãèñòîãðàììû
-std::vector<size_t> make_histogram(const std::vector<double>& numbers, size_t bin_count) {
-    std::vector<size_t> bins(bin_count, 0);
-
+vector<size_t> make_histogram(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);
 
-    for (double number : numbers) {
+    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 ((lo <= number) && (number < hi)) {
+            auto lo = min + j * bin_size;
+            auto hi = min + (j + 1) * bin_size;
+            if ((lo <= numbers[i]) && (numbers[i] < hi)) {
                 bins[j]++;
                 found = true;
             }
@@ -40,6 +37,5 @@ std::vector<size_t> make_histogram(const std::vector<double>& numbers, size_t bi
             bins[bin_count - 1]++;
         }
     }
-
     return bins;
 }

histogram.h

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

histogram_internal.h

@@ -1,7 +1,6 @@
 #ifndef HISTOGRAM_INTERNAL_H_INCLUDED
 #define HISTOGRAM_INTERNAL_H_INCLUDED
-#include <vector>
-using std::vector;
+
 void find_minmax(const std::vector<double>& numbers, double& min, double& max);
 
-#endif // HISTOGRAM_INTERNAL_H_INCLUDED
+#endif

lab01.cbp

@@ -13,7 +13,12 @@
 				<Option compiler="gcc" />
 				<Compiler>
 					<Add option="-g" />
+					<Add directory="curl/include" />
 				</Compiler>
+				<Linker>
+					<Add library="libcurl.dll.a" />
+					<Add directory="curl/lib" />
+				</Linker>
 			</Target>
 			<Target title="Release">
 				<Option output="bin/Release/lab01" prefix_auto="1" extension_auto="1" />

main.cpp

@@ -3,55 +3,76 @@
 #include "histogram.h"
 #include "text.h"
 #include "svg.h"
+#include <curl/curl.h>
+#include <sstream>
+#include <string>
 using namespace std;
 
 struct Input {
     vector<double> numbers;
     size_t bin_count;
-    size_t image_width;
 };
 
-Input input_data() {
-    Input in;
+Input input_data(istream& in, bool prompt) {
+    Input inp;
     size_t number_count;
-    cerr << "Enter number count: ";
-    cin >> number_count;
-
-    in.numbers.resize(number_count);
-    cerr << "Enter numbers: ";
-    for (size_t i = 0; i < number_count; i++) {
-        cin >> in.numbers[i];
+    if (prompt){
+        cerr << "Enter number count: ";
     }
-
-    cerr << "Enter bin count: ";
-    cin >> in.bin_count;
-
-    const size_t BLOCK_WIDTH = 10;
-    const size_t MIN_WIDTH = 70;
-    const size_t MAX_WIDTH = 800;
-    size_t required_min_width = number_count * BLOCK_WIDTH / 3;
-
-    while (true) {
-        cerr << "Enter image width (" << MIN_WIDTH << "-" << MAX_WIDTH << "), minimum " << required_min_width << ": ";
-        cin >> in.image_width;
-
-        if (in.image_width < MIN_WIDTH) {
-            cerr << "Width is too small (minimum " << MIN_WIDTH << ")\n";
-        } else if (in.image_width > MAX_WIDTH) {
-            cerr << "Width is too large (maximum " << MAX_WIDTH << ")\n";
-        } else if (in.image_width < required_min_width) {
-            cerr << "Width is less than 1/3 of numbers count * block width (" << required_min_width << ")\n";
-        } else {
-            break;
+    in >> number_count;
+    inp.numbers.resize(number_count);
+    if (prompt){
+                cerr << "Enter numbers: ";
         }
+    for (size_t i = 0; i < number_count; i++) {
+        in >> inp.numbers[i];
     }
 
-    return in;
+    if (prompt) {
+            cerr << "Enter bin count: ";
+    }
+    in >> inp.bin_count;
+    return inp;
 }
 
-int main() {
-    auto in = input_data();
-    auto bins = make_histogram(in.numbers, in.bin_count);
-    show_histogram_svg(bins, in.image_width);
+size_t
+write_data(void* items, size_t item_size, size_t item_count, void* ctx) {
+    stringstream* buffer = reinterpret_cast<stringstream*>(ctx);
+    size_t data_size = item_size * item_count;
+    (*buffer).write(reinterpret_cast<const char*>(items), data_size);
+    return data_size;
+}
+
+Input
+download(const string& adress){
+    stringstream buffer;
+    CURL* curl = curl_easy_init();
+    if(curl) {
+
+        CURLcode res;
+        curl_easy_setopt(curl, CURLOPT_URL, adress.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){
+            cerr << curl_easy_strerror(res);
+            exit(1);
+        }
+        curl_easy_cleanup(curl);
+    }
+
+    return input_data(buffer, false);
+}
+int main(int argc, char* argv[]) {
+    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);
     return 0;
 }
+

svg.cpp

@@ -27,20 +27,21 @@ void svg_rect(double x, double y, double width, double height, string stroke = "
          << "' stroke='" << stroke << "' fill='" << fill << "' />\n";
 }
 
-void show_histogram_svg(const vector<size_t>& bins, size_t image_width) {
+void show_histogram_svg(const vector<size_t>& bins) {
     if (bins.empty()) {
         cerr << "Error: Empty bins vector\n";
         return;
     }
 
+    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 MAX_WIDTH = image_width - TEXT_WIDTH;
+    const auto MAX_WIDTH = IMAGE_WIDTH - TEXT_WIDTH;
 
-    svg_begin(image_width, IMAGE_HEIGHT);
+    svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
 
     double top = 0;
     size_t max_count = bins[0];
@@ -59,3 +60,4 @@ void show_histogram_svg(const vector<size_t>& bins, size_t image_width) {
 
     svg_end();
 }
+

svg.h

@@ -2,8 +2,8 @@
 #define SVG_H_INCLUDED
 
 #include <vector>
-#include <cstddef> // Äëÿ size_t
+#include <cstddef> // Äëÿ size_t
 
-void show_histogram_svg(const std::vector<size_t>& bins, size_t image_width);
+void show_histogram_svg(const std::vector<size_t>& bins);
 
-#endif
+#endif // SVG_H_INCLUDED