283 lines
6.6 KiB
C++
283 lines
6.6 KiB
C++
|
//+---------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Microsoft Windows
|
||
|
|
// Copyright (C) Microsoft Corporation, 1992 - 1994.
|
||
|
|
//
|
||
|
|
// File: pathpars.hxx
|
||
|
|
//
|
||
|
|
// Contents: Parses a given path and gives individual components
|
||
|
|
//
|
||
|
|
// Classes: CPathParser
|
||
|
|
//
|
||
|
|
// Functions:
|
||
|
|
//
|
||
|
|
// History: 2-10-96 srikants Created
|
||
|
|
//
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
//+---------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Class: CPathParser
|
||
|
|
//
|
||
|
|
// Purpose: A class to iterate over the components of a path.
|
||
|
|
//
|
||
|
|
// History: 2-11-96 srikants Created
|
||
|
|
//
|
||
|
|
// Notes:
|
||
|
|
//
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
class CPathParser
|
||
|
|
{
|
||
|
|
enum { cMinDriveName = 2, cMinUNC = 5 };
|
||
|
|
enum EPathType { eRelative = 0, eDrivePath = 1, eUNC = 2 };
|
||
|
|
|
||
|
|
public:
|
||
|
|
|
||
|
|
enum { wBackSlash = L'\\', wColon = L':' };
|
||
|
|
CPathParser( WCHAR const * pwszPath, ULONG len = 0 );
|
||
|
|
CPathParser()
|
||
|
|
{
|
||
|
|
_pwszPath = _pCurr = 0;
|
||
|
|
_len = _iNext = 0;
|
||
|
|
_type = eRelative;
|
||
|
|
}
|
||
|
|
|
||
|
|
void Init( WCHAR const * pwszPath, ULONG len = 0 );
|
||
|
|
|
||
|
|
BOOL IsLastComp() const { return 0 == _pwszPath[_iNext]; }
|
||
|
|
void Next();
|
||
|
|
|
||
|
|
BOOL GetFileName( WCHAR * pwszBuf, ULONG & cc ) const;
|
||
|
|
BOOL GetFilePath( WCHAR * pwszBuf, ULONG & cc ) const;
|
||
|
|
|
||
|
|
BOOL IsUNCName() const { return eUNC == _type; }
|
||
|
|
BOOL IsDrivePath() const { return eDrivePath == _type; }
|
||
|
|
BOOL IsRelativePath() const { return eRelative == _type; }
|
||
|
|
|
||
|
|
private:
|
||
|
|
|
||
|
|
BOOL _IsUNCName();
|
||
|
|
BOOL _IsDriveName() const;
|
||
|
|
|
||
|
|
void _SkipDrive();
|
||
|
|
void _SkipUNC();
|
||
|
|
void _SkipToNext();
|
||
|
|
|
||
|
|
void _SkipToNextBackSlash();
|
||
|
|
|
||
|
|
BOOL _IsAtBackSlash() const
|
||
|
|
{
|
||
|
|
return wBackSlash == _pwszPath[_iNext];
|
||
|
|
}
|
||
|
|
|
||
|
|
WCHAR const * _pwszPath;
|
||
|
|
unsigned _len;
|
||
|
|
|
||
|
|
WCHAR const * _pCurr;
|
||
|
|
unsigned _iNext;
|
||
|
|
|
||
|
|
EPathType _type;
|
||
|
|
};
|
||
|
|
|
||
|
|
class CLongPath
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
|
||
|
|
CLongPath( WCHAR const * pwszPath = 0 );
|
||
|
|
CLongPath( CLongPath const & rhs );
|
||
|
|
CLongPath & operator=( CLongPath const & rhs );
|
||
|
|
|
||
|
|
void Init( WCHAR const * pwszPath );
|
||
|
|
void Init( ULONG cwcMax );
|
||
|
|
|
||
|
|
~CLongPath()
|
||
|
|
{
|
||
|
|
if ( _pwszPath != _wszBuf )
|
||
|
|
delete [] _pwszPath;
|
||
|
|
}
|
||
|
|
|
||
|
|
WCHAR const * GetPath() const { return _pwszPath; }
|
||
|
|
|
||
|
|
WCHAR * GetWritable() { return _pwszPath; }
|
||
|
|
ULONG GetMaxChars() const { return _cwcMax; }
|
||
|
|
ULONG Length() const { return _cwc; }
|
||
|
|
|
||
|
|
|
||
|
|
void MakeWin32LongPath();
|
||
|
|
BOOL IsWin32LongPath();
|
||
|
|
|
||
|
|
static BOOL IsMaxPathExceeded( WCHAR const * pwszPath );
|
||
|
|
|
||
|
|
private:
|
||
|
|
|
||
|
|
WCHAR _wszBuf[MAX_PATH+1]; // default buffer
|
||
|
|
|
||
|
|
WCHAR * _pwszPath; // Current path buffer
|
||
|
|
ULONG _cwc; // Length of the path
|
||
|
|
ULONG _cwcMax; // Maximum number of chars in buffer
|
||
|
|
// including trailing 0
|
||
|
|
};
|
||
|
|
|
||
|
|
//+---------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Member: Init
|
||
|
|
//
|
||
|
|
// Synopsis: Initializes the CLongPath class to have upto the specified
|
||
|
|
// number of characters.
|
||
|
|
//
|
||
|
|
// Arguments: [cwc] - Maximum chars to be allowed (including 0)
|
||
|
|
//
|
||
|
|
// History: 6-26-96 srikants Created
|
||
|
|
//
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
inline
|
||
|
|
void CLongPath::Init( ULONG cwc )
|
||
|
|
{
|
||
|
|
if ( cwc > _cwcMax )
|
||
|
|
{
|
||
|
|
WCHAR * pwszNew = new WCHAR [cwc];
|
||
|
|
if ( _pwszPath != _wszBuf )
|
||
|
|
delete [] _pwszPath;
|
||
|
|
|
||
|
|
_pwszPath = pwszNew;
|
||
|
|
_cwcMax = cwc;
|
||
|
|
}
|
||
|
|
|
||
|
|
_cwc = 0;
|
||
|
|
_pwszPath[0] = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
//+---------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Member: CLongPath::Init
|
||
|
|
//
|
||
|
|
// Synopsis: Initializes by copying the given path buffer into the class
|
||
|
|
// buffer.
|
||
|
|
//
|
||
|
|
// Arguments: [pwszPath] - Path to be copied.
|
||
|
|
//
|
||
|
|
// History: 6-26-96 srikants Created
|
||
|
|
//
|
||
|
|
// Notes:
|
||
|
|
//
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
inline
|
||
|
|
void CLongPath::Init( WCHAR const * pwszPath )
|
||
|
|
{
|
||
|
|
Win4Assert( 0 != _pwszPath );
|
||
|
|
|
||
|
|
if ( pwszPath )
|
||
|
|
{
|
||
|
|
ULONG cwc = wcslen( pwszPath );
|
||
|
|
Init( cwc+1 );
|
||
|
|
RtlCopyMemory( _pwszPath, pwszPath, (cwc+1)*sizeof(WCHAR) );
|
||
|
|
_cwc = cwc;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
_pwszPath[0] = 0;
|
||
|
|
_cwc = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//+---------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Member: CLongPath::CLongPath
|
||
|
|
//
|
||
|
|
// Synopsis: Constructor that takes a path buffer
|
||
|
|
//
|
||
|
|
// Arguments: [pwszPath] - Path to be copied to the local buffer.
|
||
|
|
//
|
||
|
|
// History: 6-26-96 srikants Created
|
||
|
|
//
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
inline
|
||
|
|
CLongPath::CLongPath( WCHAR const * pwszPath )
|
||
|
|
{
|
||
|
|
_pwszPath = _wszBuf;
|
||
|
|
_cwcMax = sizeof(_wszBuf)/sizeof(WCHAR);
|
||
|
|
|
||
|
|
Init( pwszPath );
|
||
|
|
}
|
||
|
|
|
||
|
|
//+---------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Member: CLongPath::CLongPath
|
||
|
|
//
|
||
|
|
// Synopsis: Copy constructor
|
||
|
|
//
|
||
|
|
// Arguments: [rhs] -
|
||
|
|
//
|
||
|
|
// History: 6-26-96 srikants Created
|
||
|
|
//
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
inline
|
||
|
|
CLongPath::CLongPath( CLongPath const & rhs )
|
||
|
|
{
|
||
|
|
_pwszPath = _wszBuf;
|
||
|
|
_cwcMax = sizeof(_wszBuf)/sizeof(WCHAR);
|
||
|
|
|
||
|
|
Init( rhs.GetPath() );
|
||
|
|
|
||
|
|
END_CONSTRUCTION( CLongPath );
|
||
|
|
}
|
||
|
|
|
||
|
|
//+---------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Member: CLongPath::operator
|
||
|
|
//
|
||
|
|
// Synopsis: Assignment operator for CLongPath
|
||
|
|
//
|
||
|
|
// Arguments: [rhs] -
|
||
|
|
//
|
||
|
|
// History: 6-26-96 srikants Created
|
||
|
|
//
|
||
|
|
// Notes:
|
||
|
|
//
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
inline
|
||
|
|
CLongPath & CLongPath::operator=( CLongPath const & rhs )
|
||
|
|
{
|
||
|
|
Init( rhs.GetPath() );
|
||
|
|
return *this;
|
||
|
|
}
|
||
|
|
|
||
|
|
//+---------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Function: IsMaxPathExceeded
|
||
|
|
//
|
||
|
|
// Synopsis: Tests if the given path has exceeded the max path
|
||
|
|
//
|
||
|
|
// Arguments: [pwszPath] -
|
||
|
|
//
|
||
|
|
// Returns: TRUE if pwszPath is >= MAX_PATH; FALSE o/w
|
||
|
|
//
|
||
|
|
// History: 6-26-96 srikants Created
|
||
|
|
//
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
inline CLongPath::IsMaxPathExceeded( WCHAR const * pwszPath )
|
||
|
|
{
|
||
|
|
ULONG cwc = pwszPath ? wcslen( pwszPath ) : 0;
|
||
|
|
if (cwc >= MAX_PATH)
|
||
|
|
{
|
||
|
|
ciDebugOut(( DEB_ERROR,
|
||
|
|
"Path (%ws), (%d) chars long, is >= than MAX_PATH(%d).\n",
|
||
|
|
pwszPath, cwc, MAX_PATH ));
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|