diff options
Diffstat (limited to 'zen/long_path_prefix.h')
| -rw-r--r-- | zen/long_path_prefix.h | 46 |
1 files changed, 41 insertions, 5 deletions
diff --git a/zen/long_path_prefix.h b/zen/long_path_prefix.h index ae09c5f5..0669cf88 100644 --- a/zen/long_path_prefix.h +++ b/zen/long_path_prefix.h @@ -18,10 +18,21 @@ namespace zen 2. if path is smaller than MAX_PATH nothing is changed! caveat: FindFirstFile() "Prepending the string "\\?\" does not allow access to the root directory." 3. path may already contain \\?\-prefix */ -Zstring applyLongPathPrefix(const Zstring& path); //throw() -Zstring applyLongPathPrefixCreateDir(const Zstring& path); //throw() -> special rule for ::CreateDirectory()/::CreateDirectoryEx(): MAX_PATH - 12(=^ 8.3 filename) is threshold +Zstring applyLongPathPrefix(const Zstring& path); //noexcept +Zstring applyLongPathPrefixCreateDir(const Zstring& path); //noexcept -> special rule for ::CreateDirectory()/::CreateDirectoryEx(): MAX_PATH - 12(=^ 8.3 filename) is threshold -Zstring removeLongPathPrefix(const Zstring& path); //throw() +Zstring removeLongPathPrefix(const Zstring& path); //noexcept + + +Zstring ntPathToWin32Path(const Zstring& path); //noexcept +/* +http://msdn.microsoft.com/en-us/library/windows/desktop/aa365247%28v=vs.85%29.aspx#NT_Namespaces + +As used by GetModuleFileNameEx() and symlinks (FSCTL_GET_REPARSE_POINT): + E.g.: + \??\C:\folder -> C:\folder + \SystemRoot -> C:\Windows +*/ } @@ -84,7 +95,7 @@ Zstring zen::applyLongPathPrefix(const Zstring& path) inline -Zstring zen::applyLongPathPrefixCreateDir(const Zstring& path) //throw() +Zstring zen::applyLongPathPrefixCreateDir(const Zstring& path) //noexcept { //special rule for ::CreateDirectoryEx(): MAX_PATH - 12(=^ 8.3 filename) is threshold return applyLongPathPrefixImpl<MAX_PATH - 12> (path); @@ -92,7 +103,7 @@ Zstring zen::applyLongPathPrefixCreateDir(const Zstring& path) //throw() inline -Zstring zen::removeLongPathPrefix(const Zstring& path) //throw() +Zstring zen::removeLongPathPrefix(const Zstring& path) //noexcept { if (zen::startsWith(path, LONG_PATH_PREFIX)) { @@ -104,4 +115,29 @@ Zstring zen::removeLongPathPrefix(const Zstring& path) //throw() return path; //fallback } + +inline +Zstring zen::ntPathToWin32Path(const Zstring& path) //noexcept +{ + if (startsWith(path, L"\\??\\")) + return Zstring(path.c_str() + 4, path.length() - 4); + + if (startsWith(path, L"\\SystemRoot\\")) + { + DWORD bufSize = ::GetEnvironmentVariable(L"SystemRoot", nullptr, 0); + if (bufSize > 0) + { + std::vector<wchar_t> buf(bufSize); + DWORD charsWritten = ::GetEnvironmentVariable(L"SystemRoot", //_In_opt_ LPCTSTR lpName, + &buf[0], //_Out_opt_ LPTSTR lpBuffer, + bufSize); //_In_ DWORD nSize + + if (charsWritten != 0 && charsWritten < bufSize) + return replaceCpy(path, L"\\SystemRoot\\", appendSeparator(Zstring(&buf[0], charsWritten)), false); + } + } + + return path; +} + #endif //LONGPATHPREFIX_H_INCLUDED |