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在Windows环境中操作区分大小写的文件/文件夹
acmilan2017/09/16软件综合 IP:四川
在Windows API中只开放了两个允许区分大小写的API:
CreateFile,使用FILE_FLAG_POSIX_SEMANTICS开关;
FindFirstFileEx,使用FIND_FIRST_EX_CASE_SENSITIVE开关。
不过我们可以通过SetFileInformationByHandle来实现文件/文件夹的改名和删除。

此外,在Native API中InitializeObjectAttributes时不指定OBJ_CASE_INSENSITIVE开关,也可以实现区分大小写的功能。

所有的这些开关只有注册表键值obcaseinsensitive设为DWORD:0并且【重新启动】之后才有效。obcaseinsensitive的具体位置是HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Session Manager\\kernel。

这个键值只影响Windows API(kernel32.dll)和Native API(ntdll.dll)的行为,Windows Subsystem for Linux是通过未公开的内核调用来实现的,不受这个注册表键值影响。

case_sensitive.png

Other
// ConsoleApplication1.cpp: 定义控制台应用程序的入口点。 // #include "stdafx.h" #include <windows.h> #include <stdio.h> int main() { HKEY hsubkey; DWORD valtype, obcaseinsensitive, dwret; LSTATUS lstatus; ULONGLONG renbuf1[64], renbuf2[64]; FILE_RENAME_INFO *ren1, *ren2; FILE_DISPOSITION_INFO del1, del2; HANDLE hdir1, hdir2; HANDLE hfind; WIN32_FIND_DATA fd; char ansipath[MAX_PATH]; // 检测系统是否打开了Win32的大小写敏感接口 hsubkey = NULL; RegOpenKey(HKEY_LOCAL_MACHINE, TEXT("SYSTEM\\CurrentControlSet\\Control\\Session Manager\\kernel"), &hsubkey); valtype = obcaseinsensitive = 0; dwret = sizeof obcaseinsensitive; lstatus = RegQueryValueEx(hsubkey, TEXT("obcaseinsensitive"), NULL, &valtype, (LPBYTE)&obcaseinsensitive, &dwret); RegCloseKey(hsubkey); if (lstatus != ERROR_SUCCESS || valtype != REG_DWORD || dwret != sizeof obcaseinsensitive || obcaseinsensitive != 0) { printf("HKEY_LOCAL_MACHINE\\CurrentControlSet\\Control\\Session Manager\\kernel\\obcaseinsensitive" " must be set to REG_DWORD:0, and you must restart your computer before trying again.\n"); return 1; } // 创建两个文件夹 CreateDirectory(TEXT("G:\\CaseDir_1"), NULL); CreateDirectory(TEXT("G:\\casedir_123"), NULL); // 改成只有大小写不同的形式 // 第一个 hdir1 = CreateFile(TEXT("G:\\CaseDir_1"), GENERIC_READ | GENERIC_WRITE | DELETE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_POSIX_SEMANTICS, NULL); memset(renbuf1, 0, sizeof renbuf1); ren1 = (FILE_RENAME_INFO*)renbuf1; ren1->ReplaceIfExists = FALSE; ren1->RootDirectory = NULL; wcscpy(ren1->FileName, L"G:\\CaseDir"); ren1->FileNameLength = wcslen(ren1->FileName) * sizeof(wchar_t); SetFileInformationByHandle(hdir1, FileRenameInfo, &renbuf1, sizeof renbuf1); CloseHandle(hdir1); // 第二个 hdir2 = CreateFile(TEXT("G:\\casedir_123"), GENERIC_READ | GENERIC_WRITE | DELETE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_POSIX_SEMANTICS, NULL); memset(renbuf2, 0, sizeof renbuf2); ren2 = (FILE_RENAME_INFO*)renbuf2; ren2->ReplaceIfExists = FALSE; ren2->RootDirectory = NULL; wcscpy(ren2->FileName, L"G:\\casedir"); ren2->FileNameLength = wcslen(ren2->FileName) * sizeof(wchar_t); SetFileInformationByHandle(hdir2, FileRenameInfo, &renbuf2, sizeof renbuf2); CloseHandle(hdir2); // 按照区分大小写的方式查找文件/文件夹 hfind = FindFirstFileEx(TEXT("G:\\Case*"), FindExInfoStandard, &fd, FindExSearchNameMatch, NULL, FIND_FIRST_EX_CASE_SENSITIVE); if (hfind != INVALID_HANDLE_VALUE) { do { #ifdef UNICODE WideCharToMultiByte(CP_ACP, 0, fd.cFileName, -1, ansipath, MAX_PATH, NULL, NULL); #else strcpy(ansipath, fd.cFileName); #endif printf("%s\n", ansipath); } while (FindNextFile(hfind, &fd)); FindClose(hfind); } #if 0 // 改回来 // 第一个 hdir1 = CreateFile(TEXT("G:\\CaseDir"), GENERIC_READ | GENERIC_WRITE | DELETE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_POSIX_SEMANTICS, NULL); memset(renbuf1, 0, sizeof renbuf1); ren1 = (FILE_RENAME_INFO*)renbuf1; ren1->ReplaceIfExists = FALSE; ren1->RootDirectory = NULL; wcscpy(ren1->FileName, L"G:\\CaseDir_1"); ren1->FileNameLength = wcslen(ren1->FileName) * sizeof(wchar_t); SetFileInformationByHandle(hdir1, FileRenameInfo, &renbuf1, sizeof renbuf1); CloseHandle(hdir1); // 第二个 hdir2 = CreateFile(TEXT("G:\\casedir"), GENERIC_READ | GENERIC_WRITE | DELETE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_POSIX_SEMANTICS, NULL); memset(renbuf2, 0, sizeof renbuf2); ren2 = (FILE_RENAME_INFO*)renbuf2; ren2->ReplaceIfExists = FALSE; ren2->RootDirectory = NULL; wcscpy(ren2->FileName, L"G:\\casedir_123"); ren2->FileNameLength = wcslen(ren2->FileName) * sizeof(wchar_t); SetFileInformationByHandle(hdir2, FileRenameInfo, &renbuf2, sizeof renbuf2); CloseHandle(hdir2); #else // 删掉 // 第一个 hdir1 = CreateFile(TEXT("G:\\CaseDir"), GENERIC_READ | GENERIC_WRITE | DELETE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_POSIX_SEMANTICS, NULL); del1.DeleteFile = TRUE; SetFileInformationByHandle(hdir1, FileDispositionInfo, &del1, sizeof del1); CloseHandle(hdir1); // 第二个 hdir2 = CreateFile(TEXT("G:\\casedir"), GENERIC_READ | GENERIC_WRITE | DELETE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_POSIX_SEMANTICS, NULL); del2.DeleteFile = TRUE; SetFileInformationByHandle(hdir2, FileDispositionInfo, &del2, sizeof del2); CloseHandle(hdir2); #endif return 0; }</stdio.h></windows.h>

[修改于 7年9个月前 - 2017/09/16 18:07:50]

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