#include <stdio.h>
#include <stdlib.h>

#ifdef _WIN32
#include <windows.h>
#else
#include <dlfcn.h>
#endif

typedef int (*QueryFunc)(char *, size_t *);

int main(int argc, char *argv[])
{
    char Buffer[1024];
    size_t Size = sizeof(Buffer);

#ifdef _WIN32
    HMODULE hLib = LoadLibrary("libquery.dll");
    if (!hLib) {
        printf("failed to load library\n");
        return 1;
    }
    QueryFunc Query = (QueryFunc)GetProcAddress(hLib, "Query");
#else
    void *hLib = dlopen("./libquery.so", RTLD_LAZY);
    if (!hLib) {
        printf("failed to load library\n");
        return 1;
    }
    QueryFunc Query = (QueryFunc)dlsym(hLib, "Query");
#endif

    if (!Query) {
        printf("failed to find Query function\n");
        return 1;
    }

    if (0 == Query(Buffer, &Size)) {
        printf("failed to call Query\n");
    } else {
        char *Ptr = Buffer;
        while (Size-- > 0) putchar(*Ptr++);
        putchar('\n');
    }

#ifdef _WIN32
    FreeLibrary(hLib);
#else
    dlclose(hLib);
#endif

    return 0;
}