Subversion Repositories WoWGM

#include "pch.h"
#pragma hdrstop

#include "OsFile.h"


//=============================================================================
bool OsFileExists (char* fileName) {
        DWORD dwFileAttributes = GetFileAttributesA(fileName);
        return (dwFileAttributes != INVALID_FILE_ATTRIBUTES && !(dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY));
}

//=============================================================================
bool OsDirectoryExists (char* directory) {
        DWORD dwFileAttributes = GetFileAttributesA(directory);
        return (dwFileAttributes != INVALID_FILE_ATTRIBUTES && (dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY));
}

//=============================================================================
HANDLE OsCreateFile (char*      fileName,
                     DWORD      desiredAccess,
                     DWORD      shareMode,
                     DWORD      createDisposition,
                     DWORD      flagsAndAttributes,
                     HANDLE     extendedFileType) {

        HANDLE result;
        int length = MultiByteToWideChar(CP_UTF8, 0, fileName, -1, NULL, 0);
        LPWSTR fileNameW = new wchar_t[length];
        MultiByteToWideChar(CP_UTF8, 0, fileName, -1, fileNameW, length);
        result = CreateFileW(fileNameW, desiredAccess, shareMode, 0, createDisposition, flagsAndAttributes, extendedFileType);
        delete[] fileNameW;
        return result;
}

//=============================================================================
BOOL OsReadFile (HANDLE hFile, void* buffer, DWORD bytesToRead, DWORD* bytesRead) {
        return ReadFile(hFile, buffer, bytesToRead, bytesRead, 0);
}

//=============================================================================
DWORD OsSetFilePointer (HANDLE hFile, DWORD moveMethod, LONG distanceToMove) {
        DWORD result;
        LONG distanceToMoveHigh;

        distanceToMoveHigh = HIWORD(distanceToMove);
        result = SetFilePointer(hFile, distanceToMove, &distanceToMoveHigh, moveMethod);
        if (result == -1)
        {
                DWORD error = GetLastError();   /* TODO: Do something here? */
                result = -1;
        }
        return result;
}

//=============================================================================
BOOL OsWriteFile (HANDLE hFile, void const* buffer, DWORD bytesToWrite, DWORD* bytesWritten) {
        return WriteFile(hFile, buffer, bytesToWrite, bytesWritten, 0);
}

//=============================================================================
void OsCloseFile (HANDLE hFile) {
        CloseHandle(hFile);
}