ext4tc/utils.cpp at master · Alex-Regulus/ext4tc · GitHub

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#include <windows.h>
#include "utils.h"

int MultibyteToMultibyte(UINT dwSrcCodePage, char *lpSrcStr, int cbSrcStr,
                         UINT dwDestCodePage, char *lpDestStr, int cbDestStr)
{
    WCHAR *wzTemp = NULL;
    int nSrcLen = 0;

    if (dwSrcCodePage == dwDestCodePage)
    {
        return 0;
    }

    if (lpSrcStr == NULL)
    {
        return 0;
    }

    if (-1 == cbSrcStr)
    {
        nSrcLen = strlen(lpSrcStr) + 1;
    }
    else
    {
        nSrcLen = cbSrcStr;
    }

    if ((NULL == lpDestStr) || (0 == cbDestStr))
    {
        return nSrcLen;
    }

    wzTemp = new WCHAR[nSrcLen + 1];
    if (NULL == wzTemp)
    {
        return 0;
    }
    memset(wzTemp, 0, (nSrcLen + 1) * sizeof(WCHAR));
    MultiByteToWideChar(dwSrcCodePage, 0, lpSrcStr, cbSrcStr, wzTemp, nSrcLen);
    nSrcLen = WideCharToMultiByte(dwDestCodePage, 0, wzTemp, -1, lpDestStr, cbDestStr, NULL, FALSE);

    delete [] wzTemp;
    wzTemp = NULL;

    return nSrcLen;
}