X-Git-Url: http://vcs.maemo.org/git/?a=blobdiff_plain;f=lzma%2FCPP%2FWindows%2FFileIO.cpp;fp=lzma%2FCPP%2FWindows%2FFileIO.cpp;h=effd4862a8612c2f7defcf410eec567d8e4df2c1;hb=1a2e54b98aaab3669eebd38facb83687c4ac7baf;hp=0000000000000000000000000000000000000000;hpb=0b9bdac28929054558b5d7f315403fe3399a1413;p=physicsfs

diff --git a/lzma/CPP/Windows/FileIO.cpp b/lzma/CPP/Windows/FileIO.cpp
new file mode 100644
index 0000000..effd486
--- /dev/null
+++ b/lzma/CPP/Windows/FileIO.cpp
@@ -0,0 +1,318 @@
+// Windows/FileIO.cpp
+
+#include "StdAfx.h"
+
+#include "FileIO.h"
+#include "Defs.h"
+#ifdef WIN_LONG_PATH
+#include "../Common/MyString.h"
+#endif
+#ifndef _UNICODE
+#include "../Common/StringConvert.h"
+#endif
+
+#ifndef _UNICODE
+extern bool g_IsNT;
+#endif
+
+namespace NWindows {
+namespace NFile {
+
+#if defined(WIN_LONG_PATH) && defined(_UNICODE)
+#define WIN_LONG_PATH2
+#endif
+
+#ifdef WIN_LONG_PATH
+bool GetLongPathBase(LPCWSTR s, UString &res)
+{
+  res.Empty();
+  int len = MyStringLen(s);
+  wchar_t c = s[0];
+  if (len < 1 || c == L'\\' || c == L'.' && (len == 1 || len == 2 && s[1] == L'.'))
+    return true;
+  UString curDir;
+  bool isAbs = false;
+  if (len > 3)
+    isAbs = (s[1] == L':' && s[2] == L'\\' && (c >= L'a' && c <= L'z' || c >= L'A' && c <= L'Z'));
+
+  if (!isAbs)
+    {
+      DWORD needLength = ::GetCurrentDirectoryW(MAX_PATH + 1, curDir.GetBuffer(MAX_PATH + 1));
+      curDir.ReleaseBuffer();
+      if (needLength == 0 || needLength > MAX_PATH)
+        return false;
+      if (curDir[curDir.Length() - 1] != L'\\')
+        curDir += L'\\';
+    }
+  res = UString(L"\\\\?\\") + curDir + s;
+  return true;
+}
+
+bool GetLongPath(LPCWSTR path, UString &longPath)
+{
+  if (GetLongPathBase(path, longPath)) 
+    return !longPath.IsEmpty();
+  return false;
+}
+#endif
+
+namespace NIO {
+
+CFileBase::~CFileBase() { Close(); }
+
+bool CFileBase::Create(LPCTSTR fileName, DWORD desiredAccess,
+    DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes)
+{
+  if (!Close())
+    return false;
+  _handle = ::CreateFile(fileName, desiredAccess, shareMode, 
+      (LPSECURITY_ATTRIBUTES)NULL, creationDisposition, 
+      flagsAndAttributes, (HANDLE)NULL);
+  #ifdef WIN_LONG_PATH2
+  if (_handle == INVALID_HANDLE_VALUE)
+  {
+    UString longPath;
+    if (GetLongPath(fileName, longPath))
+      _handle = ::CreateFileW(longPath, desiredAccess, shareMode, 
+        (LPSECURITY_ATTRIBUTES)NULL, creationDisposition, 
+        flagsAndAttributes, (HANDLE)NULL);
+  }
+  #endif
+  return (_handle != INVALID_HANDLE_VALUE);
+}
+
+#ifndef _UNICODE
+bool CFileBase::Create(LPCWSTR fileName, DWORD desiredAccess,
+    DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes)
+{
+  if (!g_IsNT)
+    return Create(UnicodeStringToMultiByte(fileName, ::AreFileApisANSI() ? CP_ACP : CP_OEMCP), 
+      desiredAccess, shareMode, creationDisposition, flagsAndAttributes);
+  if (!Close())
+    return false;
+  _handle = ::CreateFileW(fileName, desiredAccess, shareMode, 
+    (LPSECURITY_ATTRIBUTES)NULL, creationDisposition, 
+    flagsAndAttributes, (HANDLE)NULL);
+  #ifdef WIN_LONG_PATH
+  if (_handle == INVALID_HANDLE_VALUE)
+  {
+    UString longPath;
+    if (GetLongPath(fileName, longPath))
+      _handle = ::CreateFileW(longPath, desiredAccess, shareMode, 
+        (LPSECURITY_ATTRIBUTES)NULL, creationDisposition, 
+        flagsAndAttributes, (HANDLE)NULL);
+  }
+  #endif
+  return (_handle != INVALID_HANDLE_VALUE);
+}
+#endif
+
+bool CFileBase::Close()
+{
+  if (_handle == INVALID_HANDLE_VALUE)
+    return true;
+  if (!::CloseHandle(_handle))
+    return false;
+  _handle = INVALID_HANDLE_VALUE;
+  return true;
+}
+
+bool CFileBase::GetPosition(UInt64 &position) const
+{
+  return Seek(0, FILE_CURRENT, position);
+}
+
+bool CFileBase::GetLength(UInt64 &length) const
+{
+  DWORD sizeHigh;
+  DWORD sizeLow = ::GetFileSize(_handle, &sizeHigh);
+  if(sizeLow == 0xFFFFFFFF)
+    if(::GetLastError() != NO_ERROR)
+      return false;
+  length = (((UInt64)sizeHigh) << 32) + sizeLow;
+  return true;
+}
+
+bool CFileBase::Seek(Int64 distanceToMove, DWORD moveMethod, UInt64 &newPosition) const
+{
+  LARGE_INTEGER value;
+  value.QuadPart = distanceToMove;
+  value.LowPart = ::SetFilePointer(_handle, value.LowPart, &value.HighPart, moveMethod);
+  if (value.LowPart == 0xFFFFFFFF)
+    if(::GetLastError() != NO_ERROR) 
+      return false;
+  newPosition = value.QuadPart;
+  return true;
+}
+
+bool CFileBase::Seek(UInt64 position, UInt64 &newPosition)
+{
+  return Seek(position, FILE_BEGIN, newPosition);
+}
+
+bool CFileBase::SeekToBegin()
+{
+  UInt64 newPosition;
+  return Seek(0, newPosition);
+}
+
+bool CFileBase::SeekToEnd(UInt64 &newPosition)
+{
+  return Seek(0, FILE_END, newPosition);
+}
+
+bool CFileBase::GetFileInformation(CByHandleFileInfo &fileInfo) const
+{
+  BY_HANDLE_FILE_INFORMATION winFileInfo;
+  if(!::GetFileInformationByHandle(_handle, &winFileInfo))
+    return false;
+  fileInfo.Attributes = winFileInfo.dwFileAttributes;
+  fileInfo.CreationTime = winFileInfo.ftCreationTime;
+  fileInfo.LastAccessTime = winFileInfo.ftLastAccessTime;
+  fileInfo.LastWriteTime = winFileInfo.ftLastWriteTime;
+  fileInfo.VolumeSerialNumber = winFileInfo.dwFileAttributes; 
+  fileInfo.Size = (((UInt64)winFileInfo.nFileSizeHigh) << 32) +  winFileInfo.nFileSizeLow;
+  fileInfo.NumberOfLinks = winFileInfo.nNumberOfLinks;
+  fileInfo.FileIndex = (((UInt64)winFileInfo.nFileIndexHigh) << 32) + winFileInfo.nFileIndexLow;
+  return true;
+}
+
+/////////////////////////
+// CInFile
+
+bool CInFile::Open(LPCTSTR fileName, DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes)
+  { return Create(fileName, GENERIC_READ, shareMode, creationDisposition, flagsAndAttributes); }
+
+bool CInFile::OpenShared(LPCTSTR fileName, bool shareForWrite)
+{ return Open(fileName, FILE_SHARE_READ | (shareForWrite ? FILE_SHARE_WRITE : 0), OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL); }
+
+bool CInFile::Open(LPCTSTR fileName)
+  { return OpenShared(fileName, false); }
+
+#ifndef _UNICODE
+bool CInFile::Open(LPCWSTR fileName, DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes)
+  { return Create(fileName, GENERIC_READ, shareMode, creationDisposition, flagsAndAttributes); }
+
+bool CInFile::OpenShared(LPCWSTR fileName, bool shareForWrite)
+{ return Open(fileName, FILE_SHARE_READ | (shareForWrite ? FILE_SHARE_WRITE : 0), OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL); }
+
+bool CInFile::Open(LPCWSTR fileName)
+  { return OpenShared(fileName, false); }
+#endif
+
+// ReadFile and WriteFile functions in Windows have BUG:
+// If you Read or Write 64MB or more (probably min_failure_size = 64MB - 32KB + 1) 
+// from/to Network file, it returns ERROR_NO_SYSTEM_RESOURCES 
+// (Insufficient system resources exist to complete the requested service).
+
+// Probably in some version of Windows there are problems with other sizes: 
+// for 32 MB (maybe also for 16 MB). 
+// And message can be "Network connection was lost"
+
+static UInt32 kChunkSizeMax = (1 << 22);
+
+bool CInFile::ReadPart(void *data, UInt32 size, UInt32 &processedSize)
+{
+  if (size > kChunkSizeMax)
+    size = kChunkSizeMax;
+  DWORD processedLoc = 0;
+  bool res = BOOLToBool(::ReadFile(_handle, data, size, &processedLoc, NULL));
+  processedSize = (UInt32)processedLoc;
+  return res;
+}
+
+bool CInFile::Read(void *data, UInt32 size, UInt32 &processedSize)
+{
+  processedSize = 0;
+  do
+  {
+    UInt32 processedLoc = 0;
+    bool res = ReadPart(data, size, processedLoc);
+    processedSize += processedLoc;
+    if (!res)
+      return false;
+    if (processedLoc == 0)
+      return true;
+    data = (void *)((unsigned char *)data + processedLoc);
+    size -= processedLoc;
+  }
+  while (size > 0);
+  return true;
+}
+
+/////////////////////////
+// COutFile
+
+bool COutFile::Open(LPCTSTR fileName, DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes)
+  { return CFileBase::Create(fileName, GENERIC_WRITE, shareMode, creationDisposition, flagsAndAttributes); }
+
+static inline DWORD GetCreationDisposition(bool createAlways)
+  { return createAlways? CREATE_ALWAYS: CREATE_NEW; }
+
+bool COutFile::Open(LPCTSTR fileName, DWORD creationDisposition)
+  { return Open(fileName, FILE_SHARE_READ, creationDisposition, FILE_ATTRIBUTE_NORMAL); }
+
+bool COutFile::Create(LPCTSTR fileName, bool createAlways)
+  { return Open(fileName, GetCreationDisposition(createAlways)); }
+
+#ifndef _UNICODE
+
+bool COutFile::Open(LPCWSTR fileName, DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes)
+  { return CFileBase::Create(fileName, GENERIC_WRITE, shareMode,      creationDisposition, flagsAndAttributes); }
+
+bool COutFile::Open(LPCWSTR fileName, DWORD creationDisposition)
+  { return Open(fileName, FILE_SHARE_READ,  creationDisposition, FILE_ATTRIBUTE_NORMAL); }
+
+bool COutFile::Create(LPCWSTR fileName, bool createAlways)
+  { return Open(fileName, GetCreationDisposition(createAlways)); }
+
+#endif
+
+bool COutFile::SetTime(const FILETIME *creationTime, const FILETIME *lastAccessTime, const FILETIME *lastWriteTime)
+  { return BOOLToBool(::SetFileTime(_handle, creationTime, lastAccessTime, lastWriteTime)); }
+
+bool COutFile::SetLastWriteTime(const FILETIME *lastWriteTime)
+  {  return SetTime(NULL, NULL, lastWriteTime); }
+
+bool COutFile::WritePart(const void *data, UInt32 size, UInt32 &processedSize)
+{
+  if (size > kChunkSizeMax)
+    size = kChunkSizeMax;
+  DWORD processedLoc = 0;
+  bool res = BOOLToBool(::WriteFile(_handle, data, size, &processedLoc, NULL));
+  processedSize = (UInt32)processedLoc;
+  return res;
+}
+
+bool COutFile::Write(const void *data, UInt32 size, UInt32 &processedSize)
+{
+  processedSize = 0;
+  do
+  {
+    UInt32 processedLoc = 0;
+    bool res = WritePart(data, size, processedLoc);
+    processedSize += processedLoc;
+    if (!res)
+      return false;
+    if (processedLoc == 0)
+      return true;
+    data = (const void *)((const unsigned char *)data + processedLoc);
+    size -= processedLoc;
+  }
+  while (size > 0);
+  return true;
+}
+
+bool COutFile::SetEndOfFile() { return BOOLToBool(::SetEndOfFile(_handle)); }
+
+bool COutFile::SetLength(UInt64 length)
+{
+  UInt64 newPosition;
+  if(!Seek(length, newPosition))
+    return false;
+  if(newPosition != length)
+    return false;
+  return SetEndOfFile();
+}
+
+}}}