curl:personal variant

vector.cpp

@@ -5,6 +5,8 @@
 #include "text.h"
 #include "svg.h"
 #include <curl/curl.h>
+#include <sstream>
+#include <string>
 const size_t SCREEN_WIDTH = 80;
 const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
 using namespace std;
@@ -51,6 +53,34 @@ Input input_data(istream& in,bool prompt) {
     in >> data.bin_count;
 	return data;
 }
+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 0;
+}
+Input
+download(const string& address) {
+    stringstream buffer;
+    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) {
+            fprintf(stderr, "curl_easy_perform() failed: %s\n",
+                curl_easy_strerror(res));
+            exit(1);
+        }
+        curl_easy_cleanup(curl);
+    }
+
+    return input_data(buffer, false);
+}
+
 //int main()
 //{
 //    auto in = input_data(cin);
@@ -58,25 +88,60 @@ Input input_data(istream& in,bool prompt) {
 //    show_histogram_svg(bins, in.bin_count);
 //}
 
-int main(int argc, char* argv[])
-{
+void usage() {
+    cout << "Usage: lab34.exe [-format {text|svg}] URL\n";
+    exit(1);
+}
+
+int main(int argc, char* argv[]) {
+    curl_global_init(CURL_GLOBAL_ALL);
+
     if (argc > 1) {
-        CURL* curl = curl_easy_init();
-        if (curl) {
-            CURLcode res;
-            curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
-            res = curl_easy_perform(curl);
-            if (res != CURLE_OK) {
-                fprintf(stderr, "curl_easy_perform() failed: %s\n",
-                    curl_easy_strerror(res));
-                exit(1);
+        string format_option;
+        for (int i = 1; i < argc; ++i) {
+            if (argv[i][0] == '-') {
+                if (strcmp(argv[i], "--") == 0) {
+                    break;
+                }
+                if (strlen(argv[i]) >= 9 && strcmp(argv[i] + 1, "format") == 0) {
+                    format_option = argv[++i];
+                    break;
+                }
+            }
+        }
+
+        if (!format_option.empty()) {
+            if (format_option != "text" && format_option != "svg") {
+                usage();
             }
-            curl_easy_cleanup(curl);
+        }
+
+        Input input;
+        if (argc > 2) {
+            input = download(argv[2]);
+        }
+        else {
+            input = input_data(cin, true);
+        }
+
+        vector<size_t> bins = make_histogram(input.numbers, input.bin_count);
+
+        if (!format_option.empty()) {
+            if (format_option == "text") {
+                show_histogram_text(bins, input.bin_count);
+            }
+            else {
+                show_histogram_svg(bins, input.bin_count);
+            }
+        }
+        else {
+            show_histogram_svg(bins, input.bin_count);
         }
     }
+    else {
+        cerr << "No arguments provided." << endl;
+        usage();
+    }
+
     return 0;
-    curl_global_init(CURL_GLOBAL_ALL);
-	auto in = input_data(cin,false);
-	vector <size_t> bins = make_histogram(in.numbers, in.bin_count);
-	show_histogram_svg(bins, in.bin_count);
 }