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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,249 @@ | ||
| #!/usr/bin/env python3 | ||
| """ | ||
| set directory case sensitive on Windows directly with ctypes | ||
| **requires WSL to be enabled** | ||
| thus for Windows 10 1903 and up | ||
| """ | ||
|
|
||
| from ctypes import ( | ||
| WinDLL, | ||
| c_void_p, | ||
| get_last_error, | ||
| WinError, | ||
| c_int, | ||
| Structure, | ||
| sizeof, | ||
| byref | ||
| ) | ||
| from ctypes.wintypes import ( | ||
| HANDLE, | ||
| LPCSTR, | ||
| DWORD, | ||
| BOOL, | ||
| LPVOID, | ||
| ULONG | ||
| ) | ||
| try: | ||
| from enum import IntEnum | ||
| except ImportError: | ||
| IntEnum = int | ||
| import os.path | ||
|
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||
| # ================================================================== | ||
| # ======================== WinApi Bindings ========================= | ||
| # ================================================================== | ||
|
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||
| # https://stackoverflow.com/questions/29847679/get-error-message-from-ctypes-windll | ||
| kernel32 = WinDLL('kernel32', use_last_error=True) | ||
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| def _check_handle(h, *_): | ||
| if h == INVALID_HANDLE_VALUE: | ||
| raise WinError(get_last_error()) | ||
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| return h | ||
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| def _expect_nonzero(res, *_): | ||
| if not res: | ||
| raise WinError(get_last_error()) | ||
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| # https://learn.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-createfilea | ||
| FILE_FLAG_BACKUP_SEMANTICS = 0x02000000 | ||
| FILE_FLAG_POSIX_SEMANTICS = 0x01000000 | ||
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| OPEN_EXISTING = 3 | ||
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| FILE_SHARE_READ = 0x00000001 | ||
| FILE_SHARE_WRITE = 0x00000002 | ||
| FILE_SHARE_DELETE = 0x00000004 | ||
| FILE_SHARE_VALID_FLAGS = FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE | ||
|
|
||
| """ | ||
| HANDLE CreateFileA( | ||
| [in] LPCSTR lpFileName, | ||
| [in] DWORD dwDesiredAccess, | ||
| [in] DWORD dwShareMode, | ||
| [in, optional] LPSECURITY_ATTRIBUTES lpSecurityAttributes, | ||
| [in] DWORD dwCreationDisposition, | ||
| [in] DWORD dwFlagsAndAttributes, | ||
| [in, optional] HANDLE hTemplateFile | ||
| ); | ||
| """ | ||
| _CreateFileA = kernel32.CreateFileA | ||
| _CreateFileA.argtypes = [ | ||
| LPCSTR, DWORD, DWORD, c_void_p, DWORD, DWORD, HANDLE | ||
| ] | ||
| _CreateFileA.restype = HANDLE | ||
| _CreateFileA.errcheck = _check_handle | ||
|
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||
| # https://learn.microsoft.com/en-us/windows/win32/secauthz/generic-access-rights | ||
| GENERIC_READ = 0x80000000 | ||
| GENERIC_WRITE = 0x40000000 | ||
|
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||
| # https://learn.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-findfirstfilenamew | ||
| INVALID_HANDLE_VALUE = HANDLE(-1).value | ||
|
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||
| # https://learn.microsoft.com/en-us/windows/win32/api/handleapi/nf-handleapi-closehandle | ||
| """ | ||
| BOOL CloseHandle( | ||
| [in] HANDLE hObject | ||
| ); | ||
| """ | ||
| _CloseHandle = kernel32.CloseHandle | ||
| _CloseHandle.argtypes = [HANDLE] | ||
| _CloseHandle.restype = BOOL | ||
| _CloseHandle.errcheck = _expect_nonzero | ||
|
|
||
| # https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-getfileinformationbyhandleex | ||
| """ | ||
| BOOL GetFileInformationByHandleEx( | ||
| [in] HANDLE hFile, | ||
| [in] FILE_INFO_BY_HANDLE_CLASS FileInformationClass, | ||
| [out] LPVOID lpFileInformation, | ||
| [in] DWORD dwBufferSize | ||
| ); | ||
| """ | ||
| _GetFileInformationByHandleEx = kernel32.GetFileInformationByHandleEx | ||
| _GetFileInformationByHandleEx.argtypes = [HANDLE, c_int, LPVOID, DWORD] | ||
| _GetFileInformationByHandleEx.restype = BOOL | ||
| _GetFileInformationByHandleEx.errcheck = _expect_nonzero | ||
|
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||
|
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| # ===== The start of the undocumented craps... ===== | ||
|
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| # /mingw64/include/winbase.h | ||
| class FILE_CASE_SENSITIVE_INFO(Structure): | ||
| _fields_ = [ | ||
| ('Flags', ULONG) | ||
| ] | ||
|
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| FILE_INFO_BY_HANDLE = FILE_CASE_SENSITIVE_INFO | ||
|
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||
|
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| # https://learn.microsoft.com/en-us/windows/win32/api/minwinbase/ne-minwinbase-file_info_by_handle_class | ||
| class FILE_INFO_BY_HANDLE_CLASS(IntEnum): | ||
| FileCaseSensitiveInfo = 23 | ||
|
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||
|
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| # /mingw64/include/winnt.h | ||
| # https://github.com/DDoSolitary/LxRunOffline/blob/bdc6d7d77f886c6dcdab3b4c9c136557ca6694c4/src/lib/fs.cpp#L89 | ||
| FILE_CS_FLAG_CASE_SENSITIVE_DIR = 0x00000001 | ||
|
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||
| # https://learn.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-setfileinformationbyhandle | ||
| """ | ||
| BOOL SetFileInformationByHandle( | ||
| [in] HANDLE hFile, | ||
| [in] FILE_INFO_BY_HANDLE_CLASS FileInformationClass, | ||
| [in] LPVOID lpFileInformation, | ||
| [in] DWORD dwBufferSize | ||
| ); | ||
| """ | ||
| _SetFileInformationByHandle = kernel32.SetFileInformationByHandle | ||
| _SetFileInformationByHandle.argtypes = [HANDLE, c_int, LPVOID, DWORD] | ||
| _SetFileInformationByHandle.restype = BOOL | ||
| _SetFileInformationByHandle.errcheck = _expect_nonzero | ||
|
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||
|
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| # ================================================================== | ||
| # ======================= Wrappers functions ======================= | ||
| # ================================================================== | ||
|
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||
| def CreateFileA(path: str, access: int, share: int, | ||
| oflag: int, flags: int) -> HANDLE: | ||
| return _CreateFileA( | ||
| path.encode(encoding='utf-8'), | ||
| access, share, | ||
| None, # default | ||
| oflag, flags, | ||
| None # unused | ||
| ) | ||
|
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|
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| def CloseHandle(h: HANDLE): | ||
| _CloseHandle(h) | ||
|
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|
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| def GetFileInformationByHandleEx( | ||
| h: HANDLE, | ||
| kind: FILE_INFO_BY_HANDLE_CLASS | ||
| ) -> FILE_INFO_BY_HANDLE: | ||
| if kind == FILE_INFO_BY_HANDLE_CLASS.FileCaseSensitiveInfo: | ||
| dtype = FILE_CASE_SENSITIVE_INFO | ||
| else: | ||
| raise ValueError('Invalid file info class') | ||
|
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| data = dtype() | ||
|
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| _GetFileInformationByHandleEx(h, kind, | ||
| byref(data), sizeof(dtype)) | ||
|
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| return data | ||
|
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|
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| def SetFileInformationByHandle( | ||
| h: HANDLE, | ||
| kind: FILE_INFO_BY_HANDLE_CLASS, | ||
| data: FILE_INFO_BY_HANDLE | ||
| ): | ||
| if kind == FILE_INFO_BY_HANDLE_CLASS.FileCaseSensitiveInfo: | ||
| dtype = FILE_CASE_SENSITIVE_INFO | ||
| else: | ||
| raise ValueError('Invalid file info class') | ||
|
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| _SetFileInformationByHandle(h, kind, | ||
| byref(data), sizeof(dtype)) | ||
|
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|
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| # ================================================================== | ||
| # ======================== Helper functions ======================== | ||
| # ================================================================== | ||
|
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| def open_dir_handle(path: str, access: int) -> HANDLE: | ||
| return CreateFileA( | ||
| path, access, | ||
| FILE_SHARE_VALID_FLAGS, OPEN_EXISTING, | ||
| FILE_FLAG_POSIX_SEMANTICS | FILE_FLAG_BACKUP_SEMANTICS | ||
| ) | ||
|
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||
|
|
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| # ================================================================== | ||
| # ======================= Exported functions ======================== | ||
| # ================================================================== | ||
|
|
||
| def ensure_dir_case_sensitive(path: str): | ||
| if not os.path.isdir(path): | ||
| raise NotADirectoryError( | ||
| f'Cannot set case sensitive for non-directory: {path}' | ||
| ) | ||
|
|
||
| h = open_dir_handle(path, GENERIC_READ) | ||
| try: | ||
| info: FILE_CASE_SENSITIVE_INFO = GetFileInformationByHandleEx( | ||
| h, FILE_INFO_BY_HANDLE_CLASS.FileCaseSensitiveInfo | ||
| ) | ||
|
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||
| if info.Flags & FILE_CS_FLAG_CASE_SENSITIVE_DIR: | ||
| print(f'{path!r} is already case sensitive') | ||
| else: | ||
| h2 = open_dir_handle(path, GENERIC_WRITE) | ||
|
|
||
| try: | ||
| info.Flags |= FILE_CS_FLAG_CASE_SENSITIVE_DIR | ||
|
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| SetFileInformationByHandle( | ||
| h2, | ||
| FILE_INFO_BY_HANDLE_CLASS.FileCaseSensitiveInfo, | ||
| info | ||
| ) | ||
|
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| print(f'set case sensitive state for {path!r}') | ||
| finally: | ||
| CloseHandle(h2) | ||
| finally: | ||
| CloseHandle(h) | ||
|
|