CFileIndex CIndexTreeBlockFile::LoadRootFileIndex(char* szRootFileName)
{
CFileBasic cFileBasic;
CDiskFile cDiskFile;
CFileUtil cFileUtil;
CFileIndex cIndex;
filePos iSize;
iSize = cFileUtil.Size(szRootFileName);
if (iSize != -1)
{
if (iSize == sizeof(CFileIndex))
{
cDiskFile.Init(szRootFileName);
cFileBasic.Init(&cDiskFile);
cFileBasic.Open(EFM_Read);
cFileBasic.Read(&cIndex, 0, sizeof(CFileIndex));
cFileBasic.Close();
cFileBasic.Kill();
cDiskFile.Kill();
return cIndex;
}
else
{
gcLogger.Error2(__METHOD__, "Index Root file size [", LongLongToString(iSize), "] is incorrect. Should be SizeOf(CFileIndex).", NULL);
cIndex.Init();
return cIndex;
}
}
else
{
cIndex.Init();
return cIndex;
}
}
void TestLogFileMultipleReadsAfterOpens(void)
{
CLogFile* pcLogFile;
CDiskFile* pcDiskFile;
CFileBasic cFile;
CFileUtil cFileUtil;
char szSource[] = {"The Name of the Wise Man"};
int iSourcelen;
char szResult[50];
char szWrite[] = {"Cat Catt ct... "};
int iWriteLen;
char szA[] = {"A"};
cFileUtil.RemoveDir("Output/LogFile2");
cFileUtil.MakeDir("Output/LogFile2");
pcDiskFile = DiskFile("Output/LogFile2/OpenClose.txt");
pcDiskFile->Open(EFM_ReadWrite_Create);
iSourcelen = (int)strlen(szSource);
pcDiskFile->Write(szSource, iSourcelen + 1, 1);
pcDiskFile->Close();
AssertTrue(cFileUtil.Exists("Output/LogFile2/OpenClose.txt"));
pcLogFile = LogFile(pcDiskFile);
cFile.Init(pcLogFile);
pcLogFile->Begin();
AssertTrue(cFile.Open(EFM_Read));
AssertInt(iSourcelen + 1, (int)cFile.GetFileSize());
cFile.ReadData(szResult, iSourcelen + 1);
AssertString(szSource, szResult);
cFile.Close();
cFile.Open(EFM_ReadWrite_Create);
iWriteLen = (int)strlen(szWrite);
cFile.WriteData(szWrite, iWriteLen);
AssertInt(iSourcelen + 1, (int)cFile.GetFileSize());
pcLogFile->Close();
cFile.Delete();
AssertTrue(cFileUtil.Exists("Output/LogFile2/OpenClose.txt"));
AssertInt(0, (int)cFile.GetFileSize());
cFile.Open(EFM_ReadWrite_Create);
cFile.Write(szA, 2, 1);
AssertInt(2, (int)cFile.GetFileSize());
cFile.Close();
pcLogFile->Commit();
cFile.Kill();
AssertTrue(cFileUtil.Exists("Output/LogFile2/OpenClose.txt"));
AssertInt(2, cFileUtil.Size("Output/LogFile2/OpenClose.txt"));
pcDiskFile = DiskFile("Output/LogFile2/OpenClose.txt");
pcLogFile = LogFile(pcDiskFile);
cFile.Init(pcLogFile);
pcLogFile->Begin();
AssertTrue(cFile.Open(EFM_Read));
cFile.ReadData(szResult, 2);
AssertString("A", szResult);
cFile.Seek(0);
cFile.ReadData(szResult, 2);
AssertString("A", szResult);
cFile.Close();
cFile.Delete();
pcLogFile->Commit();
cFile.Kill();
AssertFalse(cFileUtil.Exists("Output/LogFile2/OpenClose.txt"));
}