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Assume that SetFilePointerEx() and GetFileSizeEx() are always available.

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This drops support for Windows 9x and NT 4.0 or older.
This commit is contained in:
Tsuda Kageyu 2016-10-30 22:36:18 +09:00
parent d3bd8fb7ff
commit 873c917081
1 changed files with 12 additions and 19 deletions
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31
taglib/toolkit/tfilestream.cpp
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@ -362,12 +362,12 @@ void FileStream::seek(long offset, Position p)
return;
}
SetLastError(NO_ERROR);
SetFilePointer(d->file, offset, NULL, whence);
LARGE_INTEGER liOffset;
liOffset.QuadPart = offset;
const int lastError = GetLastError();
if(lastError != NO_ERROR && lastError != ERROR_NEGATIVE_SEEK)
if(!SetFilePointerEx(d->file, liOffset, NULL, whence)) {
debug("FileStream::seek() -- Failed to set the file pointer.");
}
#else
@ -409,10 +409,11 @@ long FileStream::tell() const
{
#ifdef _WIN32
SetLastError(NO_ERROR);
const DWORD position = SetFilePointer(d->file, 0, NULL, FILE_CURRENT);
if(GetLastError() == NO_ERROR) {
return static_cast<long>(position);
const LARGE_INTEGER zero = {};
LARGE_INTEGER position;
if(SetFilePointerEx(d->file, zero, &position, FILE_CURRENT) && position.QuadPart <= LONG_MAX) {
return static_cast<long>(position.QuadPart);
}
else {
debug("FileStream::tell() -- Failed to get the file pointer.");
@ -435,15 +436,9 @@ long FileStream::length()
#ifdef _WIN32
SetLastError(NO_ERROR);
#if defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0602)
LARGE_INTEGER fileSize;
GetFileSizeEx(d->file, &fileSize);
#else
ULARGE_INTEGER fileSize;
fileSize.LowPart = GetFileSize(d->file, &fileSize.HighPart);
#endif
if(GetLastError() == NO_ERROR && fileSize.QuadPart <= LONG_MAX) {
if(GetFileSizeEx(d->file, &fileSize) && fileSize.QuadPart <= LONG_MAX) {
return static_cast<long>(fileSize.QuadPart);
}
else {
@ -477,9 +472,7 @@ void FileStream::truncate(long length)
seek(length);
SetLastError(NO_ERROR);
SetEndOfFile(d->file);
if(GetLastError() != NO_ERROR) {
if(!SetEndOfFile(d->file)) {
debug("FileStream::truncate() -- Failed to truncate the file.");
}