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Get argc/argv when using WinMain

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This commit is contained in:
Stephen Seo 2020-08-11 12:08:49 +09:00
parent 4219b79ed8
commit e79b95c482
1 changed files with 61 additions and 1 deletions
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62
src/main.cpp
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@ -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