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Bug #1567666: Emulate GetFileAttributesExA for Win95. 

Will backport to 2.5.
This commit is contained in:
Martin v. Löwis 2006-10-15 09:43:39 +00:00
parent cfcd3a9569
commit 012bc7253b
2 changed files with 104 additions and 2 deletions
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2
Misc/NEWS
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@ -137,6 +137,8 @@ Library
Extension Modules
-----------------
- Bug #1567666: Emulate GetFileAttributesExA for Win95.
- Patch #1576166: Support os.utime for directories on Windows NT+.
- Bug #1548891: The cStringIO.StringIO() constructor now encodes unicode

104
Modules/posixmodule.c
View File

@ -828,6 +828,106 @@ attribute_data_to_stat(WIN32_FILE_ATTRIBUTE_DATA *info, struct win32_stat *resul
return 0;
}
/* Emulate GetFileAttributesEx[AW] on Windows 95 */
static int checked = 0;
static BOOL (CALLBACK *gfaxa)(LPCSTR, GET_FILEEX_INFO_LEVELS, LPVOID);
static BOOL (CALLBACK *gfaxw)(LPCWSTR, GET_FILEEX_INFO_LEVELS, LPVOID);
static void
check_gfax()
{
HINSTANCE hKernel32;
if (checked)
return;
checked = 1;
hKernel32 = GetModuleHandle("KERNEL32");
*(FARPROC*)&gfaxa = GetProcAddress(hKernel32, "GetFileAttributesExA");
*(FARPROC*)&gfaxw = GetProcAddress(hKernel32, "GetFileAttributesExW");
}
static BOOL WINAPI
Py_GetFileAttributesExA(LPCSTR pszFile,
GET_FILEEX_INFO_LEVELS level,
LPVOID pv)
{
BOOL result;
HANDLE hFindFile;
WIN32_FIND_DATAA FileData;
LPWIN32_FILE_ATTRIBUTE_DATA pfad = pv;
/* First try to use the system's implementation, if that is
available and either succeeds to gives an error other than
that it isn't implemented. */
check_gfax();
if (gfaxa) {
result = gfaxa(pszFile, level, pv);
if (result || GetLastError() != ERROR_CALL_NOT_IMPLEMENTED)
return result;
}
/* It's either not present, or not implemented.
Emulate using FindFirstFile. */
if (level != GetFileExInfoStandard) {
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
/* Use GetFileAttributes to validate that the file name
does not contain wildcards (which FindFirstFile would
accept). */
if (GetFileAttributesA(pszFile) == 0xFFFFFFFF)
return FALSE;
hFindFile = FindFirstFileA(pszFile, &FileData);
if (hFindFile == INVALID_HANDLE_VALUE)
return FALSE;
FindClose(hFindFile);
pfad->dwFileAttributes = FileData.dwFileAttributes;
pfad->ftCreationTime = FileData.ftCreationTime;
pfad->ftLastAccessTime = FileData.ftLastAccessTime;
pfad->ftLastWriteTime = FileData.ftLastWriteTime;
pfad->nFileSizeHigh = FileData.nFileSizeHigh;
pfad->nFileSizeLow = FileData.nFileSizeLow;
return TRUE;
}
static BOOL WINAPI
Py_GetFileAttributesExW(LPCWSTR pszFile,
GET_FILEEX_INFO_LEVELS level,
LPVOID pv)
{
BOOL result;
HANDLE hFindFile;
WIN32_FIND_DATAW FileData;
LPWIN32_FILE_ATTRIBUTE_DATA pfad = pv;
/* First try to use the system's implementation, if that is
available and either succeeds to gives an error other than
that it isn't implemented. */
check_gfax();
if (gfaxa) {
result = gfaxw(pszFile, level, pv);
if (result || GetLastError() != ERROR_CALL_NOT_IMPLEMENTED)
return result;
}
/* It's either not present, or not implemented.
Emulate using FindFirstFile. */
if (level != GetFileExInfoStandard) {
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
/* Use GetFileAttributes to validate that the file name
does not contain wildcards (which FindFirstFile would
accept). */
if (GetFileAttributesW(pszFile) == 0xFFFFFFFF)
return FALSE;
hFindFile = FindFirstFileW(pszFile, &FileData);
if (hFindFile == INVALID_HANDLE_VALUE)
return FALSE;
FindClose(hFindFile);
pfad->dwFileAttributes = FileData.dwFileAttributes;
pfad->ftCreationTime = FileData.ftCreationTime;
pfad->ftLastAccessTime = FileData.ftLastAccessTime;
pfad->ftLastWriteTime = FileData.ftLastWriteTime;
pfad->nFileSizeHigh = FileData.nFileSizeHigh;
pfad->nFileSizeLow = FileData.nFileSizeLow;
return TRUE;
}
static int
win32_stat(const char* path, struct win32_stat *result)
{
@ -835,7 +935,7 @@ win32_stat(const char* path, struct win32_stat *result)
int code;
char *dot;
/* XXX not supported on Win95 and NT 3.x */
if (!GetFileAttributesExA(path, GetFileExInfoStandard, &info)) {
if (!Py_GetFileAttributesExA(path, GetFileExInfoStandard, &info)) {
/* Protocol violation: we explicitly clear errno, instead of
setting it to a POSIX error. Callers should use GetLastError. */
errno = 0;
@ -863,7 +963,7 @@ win32_wstat(const wchar_t* path, struct win32_stat *result)
const wchar_t *dot;
WIN32_FILE_ATTRIBUTE_DATA info;
/* XXX not supported on Win95 and NT 3.x */
if (!GetFileAttributesExW(path, GetFileExInfoStandard, &info)) {
if (!Py_GetFileAttributesExW(path, GetFileExInfoStandard, &info)) {
/* Protocol violation: we explicitly clear errno, instead of
setting it to a POSIX error. Callers should use GetLastError. */
errno = 0;