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Implement FileStream SetLength

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This commit is contained in:
disarray2077 2021-08-01 17:38:30 -03:00
parent 4bd3cc641d
commit 06fe5a98c6
8 changed files with 83 additions and 10 deletions
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60
BeefLibs/corlib/src/IO/FileStream.bf
View file

@ -235,6 +235,32 @@ namespace System.IO
return .Err;
return .Ok;
}
public override Result<void> SetLength(int64 length)
{
int64 pos = Position;
if (pos != length)
Seek(length);
Platform.BfpFileResult result = .Ok;
Platform.BfpFile_Truncate(mBfpFile, &result);
if (result != .Ok)
{
Seek(pos);
return .Err;
}
if (pos != length)
{
if (pos < length)
Seek(pos);
else
Seek(0, .FromEnd);
}
return .Ok;
}
}
class BufferedFileStream : BufferedStream
@ -452,6 +478,40 @@ namespace System.IO
return .Err;
return numBytesRead;
}
public override Result<void> SetLength(int64 length)
{
Try!(Flush());
int64 pos = Position;
if (pos != length || pos != mBfpFilePos)
{
Try!(SeekUnderlying(length));
mPos = length;
}
Platform.BfpFileResult result = .Ok;
Platform.BfpFile_Truncate(mBfpFile, &result);
if (result != .Ok)
{
Try!(SeekUnderlying(pos));
return .Err;
}
mUnderlyingLength = length;
mPos = Math.Min(pos, Length);
if (pos != length)
{
if (pos < length)
Try!(SeekUnderlying(pos));
else
Try!(SeekUnderlying(0, .FromEnd));
}
return .Ok;
}
}
class FileStream : BufferedFileStream

5
BeefLibs/corlib/src/IO/Stream.bf
View file

@ -203,6 +203,11 @@ namespace System.IO
return .Ok;
}
public virtual Result<void> SetLength(int64 length)
{
return .Err;
}
public void Align(int alignSize)
{
int64 pos = Length;

2
BeefLibs/corlib/src/Platform.bf
View file

@ -352,7 +352,7 @@ namespace System
[CallingConvention(.Stdcall), CLink]
public static extern int64 BfpFile_Seek(BfpFile* file, int64 offset, BfpFileSeekKind seekKind);
[CallingConvention(.Stdcall), CLink]
public static extern void BfpFile_Truncate(BfpFile* file);
public static extern void BfpFile_Truncate(BfpFile* file, BfpFileResult* outResult);
[CallingConvention(.Stdcall), CLink]
public static extern BfpTimeStamp BfpFile_GetTime_LastWrite(char8* path);
[CallingConvention(.Stdcall), CLink]

3
BeefySysLib/FileStream.cpp
View file

@ -219,7 +219,8 @@ void SysFileStream::SetSizeFast(int size)
int curPos = GetPos();
SetPos(size);
BfpFile_Truncate(mFile);
BfpFileResult result = BfpFileResult_Ok;
BfpFile_Truncate(mFile, &result);
SetPos(curPos);
return;
}

2
BeefySysLib/platform/PlatformInterface.h
View file

@ -422,7 +422,7 @@ BFP_EXPORT intptr BFP_CALLTYPE BfpFile_Read(BfpFile* file, void* buffer, intptr
BFP_EXPORT void BFP_CALLTYPE BfpFile_Flush(BfpFile* file);
BFP_EXPORT int64 BFP_CALLTYPE BfpFile_GetFileSize(BfpFile* file);
BFP_EXPORT int64 BFP_CALLTYPE BfpFile_Seek(BfpFile* file, int64 offset, BfpFileSeekKind seekKind);
BFP_EXPORT void BFP_CALLTYPE BfpFile_Truncate(BfpFile* file);
BFP_EXPORT void BFP_CALLTYPE BfpFile_Truncate(BfpFile* file, BfpFileResult* outResult);
BFP_EXPORT BfpTimeStamp BFP_CALLTYPE BfpFile_GetTime_LastWrite(const char* path);
BFP_EXPORT BfpFileAttributes BFP_CALLTYPE BfpFile_GetAttributes(const char* path, BfpFileResult* outResult);
BFP_EXPORT void BFP_CALLTYPE BfpFile_SetAttributes(const char* path, BfpFileAttributes attribs, BfpFileResult* outResult);

10
BeefySysLib/platform/posix/PosixCommon.cpp
View file

@ -2083,13 +2083,15 @@ BFP_EXPORT int64 BFP_CALLTYPE BfpFile_Seek(BfpFile* file, int64 offset, BfpFileS
return lseek64(file->mHandle, offset, whence);
}
BFP_EXPORT void BFP_CALLTYPE BfpFile_Truncate(BfpFile* file)
BFP_EXPORT void BFP_CALLTYPE BfpFile_Truncate(BfpFile* file, BfpFileResult* outResult)
{
int64 curPos = (int64)lseek64(file->mHandle, 0, SEEK_CUR);
if (ftruncate64(file->mHandle, curPos) != 0)
{
//TODO: Report error?
}
{
OUTRESULT(BfpFileResult_UnknownError);
return;
}
OUTRESULT(BfpFileResult_Ok);
}
BFP_EXPORT BfpTimeStamp BFP_CALLTYPE BfpFile_GetTime_LastWrite(const char* path)

9
BeefySysLib/platform/win/Platform.cpp
View file

@ -3023,9 +3023,14 @@ BFP_EXPORT int64 BFP_CALLTYPE BfpFile_Seek(BfpFile* file, int64 offset, BfpFileS
return newPos.QuadPart;
}
BFP_EXPORT void BFP_CALLTYPE BfpFile_Truncate(BfpFile* file)
BFP_EXPORT void BFP_CALLTYPE BfpFile_Truncate(BfpFile* file, BfpFileResult* outResult)
{
SetEndOfFile(file->mHandle);
if (!SetEndOfFile(file->mHandle))
{
OUTRESULT(BfpFileResult_UnknownError);
return;
}
OUTRESULT(BfpFileResult_Ok);
}
BFP_EXPORT BfpTimeStamp BFP_CALLTYPE BfpFile_GetTime_LastWrite(const char* path)

2
IDE/mintest/minlib/src/System/Platform.bf
View file

@ -304,7 +304,7 @@ namespace System
[CallingConvention(.Stdcall), CLink]
public static extern int64 BfpFile_Seek(BfpFile* file, int64 offset, BfpFileSeekKind seekKind);
[CallingConvention(.Stdcall), CLink]
public static extern void BfpFile_Truncate(BfpFile* file);
public static extern void BfpFile_Truncate(BfpFile* file, BfpFileResult* outResult);
[CallingConvention(.Stdcall), CLink]
public static extern BfpTimeStamp BfpFile_GetTime_LastWrite(char8* path);
[CallingConvention(.Stdcall), CLink]