Print comma-separated results

src/api.cpp

@@ -99,7 +99,6 @@ DK_API uint64_t dyknow_size(const std::string& directory) {
     }
 
     do {
-
         if (data.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
             continue;
         }
@@ -177,7 +176,9 @@ DK_API void validate() {
     }
 
     uint64_t size = dyknow_size();
-    std::cout << "DyKnow folder size: " << size << "\n";
+    std::cout << "DyKnow folder size: " << comma_separated(size)
+              << " bytes (" << comma_separated(size / (1024 * 1024)
+              << ") " << "MBs.\n";
 }
 
 bool exists(const char* path) {

src/api.h

@@ -49,6 +49,7 @@ Compile with g++ -shared -o api.dll api.cpp -Ofast -fPIC -shared
 
 #include "asteroids.h"
 #include "settings.h"
+#include "util.h"
 
 #pragma comment(lib, "wininet.lib")
 

src/util.h

@@ -0,0 +1,62 @@
+/*
+COPYRIGHT (C) 2025 ETHAN CHAN
+
+ALL RIGHTS RESERVED. UNAUTHORIZED COPYING, MODIFICATION, DISTRIBUTION, OR USE
+OF THIS SOFTWARE WITHOUT PRIOR PERMISSION IS STRICTLY PROHIBITED.
+
+THIS SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES, OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT, OR OTHERWISE, ARISING FROM,
+OUT OF, OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+PROJECT NAME: DieKnow
+FILENAME: src/util.h
+DESCRIPTION: DieKnow miscellaneous utilities
+AUTHOR: Ethan Chan
+DATE: 2025-1-12
+VERSION: 2.1
+*/
+
+#ifndef UTIL_H
+#define UTIL_H
+
+#include <iostream>
+#include <string>
+#include <type_traits>
+#include <sstream>
+#include <iomanip>
+
+
+template <typename T>
+std::string& comma_separated(const T& number) {
+    static_assert(std::is_arithmetic_v<T>, "Nonnumerical input!");
+
+    std::ostringstream oss;
+    oss << std::fixed << std::setprecision(0) << number;
+
+    std::string num_str = oss.str();
+    std::string formatted;
+
+    size_t start = 0;
+    if (num_str[0] == '-') {
+        formatted += '-';
+        start = 1;
+    }
+
+    size_t len = num_str.size();
+    size_t digits = len - start;
+    for (size_t i = start; i < len; ++i) {
+        formatted += num_str[i];
+        if ((digits - (i - start) - 1) % 3 == 0 && i < len - 1) {
+            // Single-apostrophe for char in C++
+            formatted += ',';
+        }
+    }
+
+    return formatted;
+}
+
+#endif  // UTIL_H