Get argc/argv when using WinMain

src/main.cpp

@@ -9,10 +9,62 @@
 
 #ifdef _MSC_VER
 #include "windows.h"
+#include <cstdlib>
+#include <cstring>
 
 int WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPSTR lpCmdLine, _In_ int nShowCmd) {
+    int argvCapacity = 16;
+    int argc = 0;
+    char **argv = (char**)calloc(argvCapacity, sizeof(char*));
+    int argLength = std::strlen(lpCmdLine);
+    int tempCapacity = 128;
+    int tempSize = 0;
+    char *temp = (char*)malloc(sizeof(char) * tempCapacity);
+    for (int i = 0; i < argLength; ++i) {
+        if (lpCmdLine[i] == ' ') {
+            if (tempSize > 0) {
+                if (argc >= argvCapacity) {
+                    char **newArgv = (char**)calloc(argvCapacity * 2, sizeof(char*));
+                    std::memcpy(newArgv, argv, sizeof(char*) * argvCapacity);
+                    free(argv);
+                    argv = newArgv;
+                    argvCapacity *= 2;
+                }
+                argv[argc] = (char*)malloc(sizeof(char) * (tempSize + 1));
+                std::memcpy(argv[argc], temp, sizeof(char) * tempSize);
+                argv[argc][tempSize] = 0;
+                ++argc;
+                tempSize = 0;
+            }
+        } else {
+            if (tempSize >= tempCapacity) {
+                char *newTemp = (char*)malloc(sizeof(char) * tempCapacity * 2);
+                std::memcpy(newTemp, temp, sizeof(char) * tempSize);
+                free(temp);
+                temp = newTemp;
+                tempCapacity *= 2;
+            }
+            temp[tempSize++] = lpCmdLine[i];
+        }
+    }
+    if (tempSize > 0) {
+        if (argc >= argvCapacity) {
+            char **newArgv = (char**)calloc(argvCapacity * 2, sizeof(char*));
+            std::memcpy(newArgv, argv, sizeof(char*) * argvCapacity);
+            free(argv);
+            argv = newArgv;
+            argvCapacity *= 2;
+        }
+        argv[argc] = (char*)malloc(sizeof(char) * (tempSize + 1));
+        std::memcpy(argv[argc], temp, sizeof(char) * tempSize);
+        argv[argc][tempSize] = 0;
+        ++argc;
+        tempSize = 0;
+    }
+    free(temp);
+
     // init
-    Tri::State state(0, nullptr);
+    Tri::State state(argc, argv);
 
     // main loop
     while(state.get_flags().test(1)) {
@@ -20,6 +72,14 @@ int WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPS
         state.update();
         state.draw();
     }
+
+    // cleanup
+
+    for (int i = 0; i < argc; ++i) {
+        free(argv[i]);
+    }
+    free(argv);
+
     return 0;
 }
 #else