#include "OSOutput.h"

#include <string>

#ifdef _WIN32

#include <codecvt>

#define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers

#include <windows.h>

#include <stringapiset.h>

#include <WinUser.h>

#undef WIN32_LEAN_AND_MEAN

#endif

OSOutput::OSOutput(){}

OSOutput::~OSOutput(){}

void OSOutput::deleteCharacter()

{

#ifdef _WIN32

INPUT fakekey[2];

fakekey[0].type = fakekey[1].type = INPUT_KEYBOARD;

fakekey[0].ki.wVk = fakekey[1].ki.wVk = VK_BACK;

fakekey[0].ki.time = fakekey[1].ki.time = 0;

fakekey[1].ki.dwFlags = KEYEVENTF_KEYUP;

SendInput(2, fakekey, sizeof(INPUT));

#endif

}

void OSOutput::outputCharacter(const std::string &sText)

{

#ifdef _WIN32

INPUT fakekey[2];

if(sText[0] == '\r' && sText[1] == '\n') {

// Newline, so we want to fake an enter

fakekey[0].type = fakekey[1].type = INPUT_KEYBOARD;

fakekey[0].ki.wVk = fakekey[1].ki.wVk = VK_RETURN;

fakekey[0].ki.time = fakekey[1].ki.time = 0;

fakekey[1].ki.dwFlags = KEYEVENTF_KEYUP;

SendInput(2, fakekey, sizeof(INPUT));

}

else {

int wchars_num = MultiByteToWideChar( CP_UTF8 , 0 , sText.c_str() , -1, nullptr , 0 );

wchar_t* wstr = new wchar_t[wchars_num];

MultiByteToWideChar( CP_UTF8 , 0 , sText.c_str() , -1, wstr , wchars_num );

for(int i = 0; i < wchars_num; ++i) {

fakekey[0].type = INPUT_KEYBOARD;

fakekey[0].ki.dwFlags = KEYEVENTF_UNICODE;

fakekey[0].ki.wVk = 0;

fakekey[0].ki.time = NULL;

fakekey[0].ki.wScan = wstr[i];

SendInput(1, fakekey, sizeof(INPUT));

}

delete[] wstr;

}

#endif

}