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#include "longPathPrefix.h"
#include <boost/scoped_array.hpp>
#include <wx/msw/wrapwin.h> //includes "windows.h"
#include "fileError.h"
#include "systemFunctions.h"
#include "stringConv.h"
#include <wx/intl.h>
namespace
{
Zstring getFullPathName(const Zstring& relativeName, size_t proposedBufferSize = 1000)
{
using namespace FreeFileSync;
boost::scoped_array<DefaultChar> fullPath(new DefaultChar[proposedBufferSize]);
const DWORD rv = ::GetFullPathName(
relativeName.c_str(), //__in LPCTSTR lpFileName,
proposedBufferSize, //__in DWORD nBufferLength,
fullPath.get(), //__out LPTSTR lpBuffer,
NULL); //__out LPTSTR *lpFilePart
if (rv == 0 || rv == proposedBufferSize)
throw FileError(wxString(_("Error resolving full path name:")) + wxT("\n\"") + zToWx(relativeName) + wxT("\"") +
wxT("\n\n") + FreeFileSync::getLastErrorFormatted());
if (rv > proposedBufferSize)
return getFullPathName(relativeName, rv);
return fullPath.get();
}
}
Zstring FreeFileSync::resolveRelativePath(const Zstring& path) //throw()
{
try
{
return getFullPathName(path);
}
catch (...)
{
return path;
}
}
//there are two flavors of long path prefix: one for UNC paths, one for regular paths
const Zstring LONG_PATH_PREFIX = DefaultStr("\\\\?\\");
const Zstring LONG_PATH_PREFIX_UNC = DefaultStr("\\\\?\\UNC");
template <size_t max_path>
inline
Zstring applyLongPathPrefixImpl(const Zstring& path)
{
if ( path.length() >= max_path && //maximum allowed path length without prefix is (MAX_PATH - 1)
!path.StartsWith(LONG_PATH_PREFIX))
{
if (path.StartsWith(DefaultStr("\\\\"))) //UNC-name, e.g. \\zenju-pc\Users
return LONG_PATH_PREFIX_UNC + path.AfterFirst(DefaultChar('\\')); //convert to \\?\UNC\zenju-pc\Users
else
return LONG_PATH_PREFIX + path; //prepend \\?\ prefix
}
//fallback
return path;
}
Zstring FreeFileSync::applyLongPathPrefix(const Zstring& path)
{
return applyLongPathPrefixImpl<MAX_PATH>(path);
}
Zstring FreeFileSync::applyLongPathPrefixCreateDir(const Zstring& path) //throw()
{
//special rule for ::CreateDirectoryEx(): MAX_PATH - 12(=^ 8.3 filename) is threshold
return applyLongPathPrefixImpl<MAX_PATH - 12>(path);
}
Zstring FreeFileSync::removeLongPathPrefix(const Zstring& path) //throw()
{
if (path.StartsWith(LONG_PATH_PREFIX))
{
Zstring finalPath = path;
if (path.StartsWith(LONG_PATH_PREFIX_UNC)) //UNC-name
finalPath.Replace(LONG_PATH_PREFIX_UNC, DefaultStr("\\"), false);
else
finalPath.Replace(LONG_PATH_PREFIX, DefaultStr(""), false);
return finalPath;
}
//fallback
return path;
}
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