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// Windows/FileFind.cpp
#include "StdAfx.h"
#include "FileFind.h"
#include "FileIO.h"
#ifndef _UNICODE
#include "../Common/StringConvert.h"
#endif
#ifndef _UNICODE
extern bool g_IsNT;
#endif
namespace NWindows {
namespace NFile {
#ifdef SUPPORT_DEVICE_FILE
bool IsDeviceName(LPCTSTR n);
#ifndef _UNICODE
bool IsDeviceName(LPCWSTR n);
#endif
#endif
#if defined(WIN_LONG_PATH) && defined(_UNICODE)
#define WIN_LONG_PATH2
#endif
bool GetLongPath(LPCWSTR fileName, UString &res);
namespace NFind {
static const TCHAR kDot = TEXT('.');
bool CFileInfo::IsDots() const
{
if (!IsDir() || Name.IsEmpty())
return false;
if (Name[0] != kDot)
return false;
return Name.Length() == 1 || (Name[1] == kDot && Name.Length() == 2);
}
#ifndef _UNICODE
bool CFileInfoW::IsDots() const
{
if (!IsDir() || Name.IsEmpty())
return false;
if (Name[0] != kDot)
return false;
return Name.Length() == 1 || (Name[1] == kDot && Name.Length() == 2);
}
#endif
#define WIN_FD_TO_MY_FI(fi, fd) \
fi.Attrib = fd.dwFileAttributes; \
fi.CTime = fd.ftCreationTime; \
fi.ATime = fd.ftLastAccessTime; \
fi.MTime = fd.ftLastWriteTime; \
fi.Size = (((UInt64)fd.nFileSizeHigh) << 32) + fd.nFileSizeLow; \
fi.IsDevice = false;
/*
#ifndef _WIN32_WCE
fi.ReparseTag = fd.dwReserved0;
#else
fi.ObjectID = fd.dwOID;
#endif
*/
static void ConvertWIN32_FIND_DATA_To_FileInfo(const WIN32_FIND_DATA &fd, CFileInfo &fi)
{
WIN_FD_TO_MY_FI(fi, fd);
fi.Name = fd.cFileName;
}
#ifndef _UNICODE
static inline UINT GetCurrentCodePage() { return ::AreFileApisANSI() ? CP_ACP : CP_OEMCP; }
static void ConvertWIN32_FIND_DATA_To_FileInfo(const WIN32_FIND_DATAW &fd, CFileInfoW &fi)
{
WIN_FD_TO_MY_FI(fi, fd);
fi.Name = fd.cFileName;
}
static void ConvertWIN32_FIND_DATA_To_FileInfo(const WIN32_FIND_DATA &fd, CFileInfoW &fi)
{
WIN_FD_TO_MY_FI(fi, fd);
fi.Name = GetUnicodeString(fd.cFileName, GetCurrentCodePage());
}
#endif
////////////////////////////////
// CFindFile
bool CFindFile::Close()
{
if (_handle == INVALID_HANDLE_VALUE)
return true;
if (!::FindClose(_handle))
return false;
_handle = INVALID_HANDLE_VALUE;
return true;
}
bool CFindFile::FindFirst(LPCTSTR wildcard, CFileInfo &fi)
{
if (!Close())
return false;
WIN32_FIND_DATA fd;
_handle = ::FindFirstFile(wildcard, &fd);
#ifdef WIN_LONG_PATH2
if (_handle == INVALID_HANDLE_VALUE)
{
UString longPath;
if (GetLongPath(wildcard, longPath))
_handle = ::FindFirstFileW(longPath, &fd);
}
#endif
if (_handle == INVALID_HANDLE_VALUE)
return false;
ConvertWIN32_FIND_DATA_To_FileInfo(fd, fi);
return true;
}
#ifndef _UNICODE
bool CFindFile::FindFirst(LPCWSTR wildcard, CFileInfoW &fi)
{
if (!Close())
return false;
if (g_IsNT)
{
WIN32_FIND_DATAW fd;
_handle = ::FindFirstFileW(wildcard, &fd);
#ifdef WIN_LONG_PATH
if (_handle == INVALID_HANDLE_VALUE)
{
UString longPath;
if (GetLongPath(wildcard, longPath))
_handle = ::FindFirstFileW(longPath, &fd);
}
#endif
if (_handle != INVALID_HANDLE_VALUE)
ConvertWIN32_FIND_DATA_To_FileInfo(fd, fi);
}
else
{
WIN32_FIND_DATAA fd;
_handle = ::FindFirstFileA(UnicodeStringToMultiByte(wildcard,
GetCurrentCodePage()), &fd);
if (_handle != INVALID_HANDLE_VALUE)
ConvertWIN32_FIND_DATA_To_FileInfo(fd, fi);
}
return (_handle != INVALID_HANDLE_VALUE);
}
#endif
bool CFindFile::FindNext(CFileInfo &fi)
{
WIN32_FIND_DATA fd;
bool result = BOOLToBool(::FindNextFile(_handle, &fd));
if (result)
ConvertWIN32_FIND_DATA_To_FileInfo(fd, fi);
return result;
}
#ifndef _UNICODE
bool CFindFile::FindNext(CFileInfoW &fi)
{
if (g_IsNT)
{
WIN32_FIND_DATAW fd;
if (!::FindNextFileW(_handle, &fd))
return false;
ConvertWIN32_FIND_DATA_To_FileInfo(fd, fi);
}
else
{
WIN32_FIND_DATAA fd;
if (!::FindNextFileA(_handle, &fd))
return false;
ConvertWIN32_FIND_DATA_To_FileInfo(fd, fi);
}
return true;
}
#endif
#define MY_CLEAR_FILETIME(ft) ft.dwLowDateTime = ft.dwHighDateTime = 0;
void CFileInfoBase::Clear()
{
Size = 0;
MY_CLEAR_FILETIME(CTime);
MY_CLEAR_FILETIME(ATime);
MY_CLEAR_FILETIME(MTime);
Attrib = 0;
}
bool CFileInfo::Find(LPCTSTR wildcard)
{
#ifdef SUPPORT_DEVICE_FILE
if (IsDeviceName(wildcard))
{
Clear();
IsDevice = true;
NIO::CInFile inFile;
if (!inFile.Open(wildcard))
return false;
Name = wildcard + 4;
if (inFile.LengthDefined)
Size = inFile.Length;
return true;
}
#endif
CFindFile finder;
return finder.FindFirst(wildcard, *this);
}
#ifndef _UNICODE
bool CFileInfoW::Find(LPCWSTR wildcard)
{
#ifdef SUPPORT_DEVICE_FILE
if (IsDeviceName(wildcard))
{
Clear();
IsDevice = true;
NIO::CInFile inFile;
if (!inFile.Open(wildcard))
return false;
Name = wildcard + 4;
if (inFile.LengthDefined)
Size = inFile.Length;
return true;
}
#endif
CFindFile finder;
return finder.FindFirst(wildcard, *this);
}
#endif
bool DoesFileExist(LPCTSTR name)
{
CFileInfo fi;
return fi.Find(name) && !fi.IsDir();
}
bool DoesDirExist(LPCTSTR name)
{
CFileInfo fi;
return fi.Find(name) && fi.IsDir();
}
bool DoesFileOrDirExist(LPCTSTR name)
{
CFileInfo fi;
return fi.Find(name);
}
#ifndef _UNICODE
bool DoesFileExist(LPCWSTR name)
{
CFileInfoW fi;
return fi.Find(name) && !fi.IsDir();
}
bool DoesDirExist(LPCWSTR name)
{
CFileInfoW fi;
return fi.Find(name) && fi.IsDir();
}
bool DoesFileOrDirExist(LPCWSTR name)
{
CFileInfoW fi;
return fi.Find(name);
}
#endif
/////////////////////////////////////
// CEnumerator
bool CEnumerator::NextAny(CFileInfo &fi)
{
if (_findFile.IsHandleAllocated())
return _findFile.FindNext(fi);
else
return _findFile.FindFirst(_wildcard, fi);
}
bool CEnumerator::Next(CFileInfo &fi)
{
for (;;)
{
if (!NextAny(fi))
return false;
if (!fi.IsDots())
return true;
}
}
bool CEnumerator::Next(CFileInfo &fi, bool &found)
{
if (Next(fi))
{
found = true;
return true;
}
found = false;
return (::GetLastError() == ERROR_NO_MORE_FILES);
}
#ifndef _UNICODE
bool CEnumeratorW::NextAny(CFileInfoW &fi)
{
if (_findFile.IsHandleAllocated())
return _findFile.FindNext(fi);
else
return _findFile.FindFirst(_wildcard, fi);
}
bool CEnumeratorW::Next(CFileInfoW &fi)
{
for (;;)
{
if (!NextAny(fi))
return false;
if (!fi.IsDots())
return true;
}
}
bool CEnumeratorW::Next(CFileInfoW &fi, bool &found)
{
if (Next(fi))
{
found = true;
return true;
}
found = false;
return (::GetLastError() == ERROR_NO_MORE_FILES);
}
#endif
////////////////////////////////
// CFindChangeNotification
// FindFirstChangeNotification can return 0. MSDN doesn't tell about it.
bool CFindChangeNotification::Close()
{
if (!IsHandleAllocated())
return true;
if (!::FindCloseChangeNotification(_handle))
return false;
_handle = INVALID_HANDLE_VALUE;
return true;
}
HANDLE CFindChangeNotification::FindFirst(LPCTSTR pathName, bool watchSubtree, DWORD notifyFilter)
{
_handle = ::FindFirstChangeNotification(pathName, BoolToBOOL(watchSubtree), notifyFilter);
#ifdef WIN_LONG_PATH2
if (!IsHandleAllocated())
{
UString longPath;
if (GetLongPath(pathName, longPath))
_handle = ::FindFirstChangeNotificationW(longPath, BoolToBOOL(watchSubtree), notifyFilter);
}
#endif
return _handle;
}
#ifndef _UNICODE
HANDLE CFindChangeNotification::FindFirst(LPCWSTR pathName, bool watchSubtree, DWORD notifyFilter)
{
if (!g_IsNT)
return FindFirst(UnicodeStringToMultiByte(pathName, GetCurrentCodePage()), watchSubtree, notifyFilter);
_handle = ::FindFirstChangeNotificationW(pathName, BoolToBOOL(watchSubtree), notifyFilter);
#ifdef WIN_LONG_PATH
if (!IsHandleAllocated())
{
UString longPath;
if (GetLongPath(pathName, longPath))
_handle = ::FindFirstChangeNotificationW(longPath, BoolToBOOL(watchSubtree), notifyFilter);
}
#endif
return _handle;
}
#endif
#ifndef _WIN32_WCE
bool MyGetLogicalDriveStrings(CSysStringVector &driveStrings)
{
driveStrings.Clear();
UINT32 size = GetLogicalDriveStrings(0, NULL);
if (size == 0)
return false;
CSysString buffer;
UINT32 newSize = GetLogicalDriveStrings(size, buffer.GetBuffer(size));
if (newSize == 0)
return false;
if (newSize > size)
return false;
CSysString string;
for (UINT32 i = 0; i < newSize; i++)
{
TCHAR c = buffer[i];
if (c == TEXT('\0'))
{
driveStrings.Add(string);
string.Empty();
}
else
string += c;
}
if (!string.IsEmpty())
return false;
return true;
}
#ifndef _UNICODE
bool MyGetLogicalDriveStrings(UStringVector &driveStrings)
{
driveStrings.Clear();
if (g_IsNT)
{
UINT32 size = GetLogicalDriveStringsW(0, NULL);
if (size == 0)
return false;
UString buffer;
UINT32 newSize = GetLogicalDriveStringsW(size, buffer.GetBuffer(size));
if (newSize == 0)
return false;
if (newSize > size)
return false;
UString string;
for (UINT32 i = 0; i < newSize; i++)
{
WCHAR c = buffer[i];
if (c == L'\0')
{
driveStrings.Add(string);
string.Empty();
}
else
string += c;
}
return string.IsEmpty();
}
CSysStringVector driveStringsA;
bool res = MyGetLogicalDriveStrings(driveStringsA);
for (int i = 0; i < driveStringsA.Size(); i++)
driveStrings.Add(GetUnicodeString(driveStringsA[i]));
return res;
}
#endif
#endif
}}}
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