+#if defined(__WINDOWS__) && !(defined(__UNIX__) || defined(__OS2__))
+static bool wxCheckWin32Permission(const wxString& path, DWORD access)
+{
+ // quoting the MSDN: "To obtain a handle to a directory, call the
+ // CreateFile function with the FILE_FLAG_BACKUP_SEMANTICS flag", but this
+ // doesn't work under Win9x/ME but then it's not needed there anyhow
+ const DWORD dwAttr = ::GetFileAttributes(path.t_str());
+ if ( dwAttr == INVALID_FILE_ATTRIBUTES )
+ {
+ // file probably doesn't exist at all
+ return false;
+ }
+
+ if ( wxGetOsVersion() == wxOS_WINDOWS_9X )
+ {
+ // FAT directories always allow all access, even if they have the
+ // readonly flag set, and FAT files can only be read-only
+ return (dwAttr & FILE_ATTRIBUTE_DIRECTORY) ||
+ (access != GENERIC_WRITE ||
+ !(dwAttr & FILE_ATTRIBUTE_READONLY));
+ }
+
+ HANDLE h = ::CreateFile
+ (
+ path.t_str(),
+ access,
+ FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+ NULL,
+ OPEN_EXISTING,
+ dwAttr & FILE_ATTRIBUTE_DIRECTORY
+ ? FILE_FLAG_BACKUP_SEMANTICS
+ : 0,
+ NULL
+ );
+ if ( h != INVALID_HANDLE_VALUE )
+ CloseHandle(h);
+
+ return h != INVALID_HANDLE_VALUE;
+}
+#endif // __WINDOWS__
+
+bool wxIsWritable(const wxString &path)
+{
+#if defined( __UNIX__ ) || defined(__OS2__)
+ // access() will take in count also symbolic links
+ return wxAccess(path.c_str(), W_OK) == 0;
+#elif defined( __WINDOWS__ )
+ return wxCheckWin32Permission(path, GENERIC_WRITE);
+#else
+ wxUnusedVar(path);
+ // TODO
+ return false;
+#endif
+}
+
+bool wxIsReadable(const wxString &path)
+{
+#if defined( __UNIX__ ) || defined(__OS2__)
+ // access() will take in count also symbolic links
+ return wxAccess(path.c_str(), R_OK) == 0;
+#elif defined( __WINDOWS__ )
+ return wxCheckWin32Permission(path, GENERIC_READ);
+#else
+ wxUnusedVar(path);
+ // TODO
+ return false;
+#endif
+}
+
+bool wxIsExecutable(const wxString &path)
+{
+#if defined( __UNIX__ ) || defined(__OS2__)
+ // access() will take in count also symbolic links
+ return wxAccess(path.c_str(), X_OK) == 0;
+#elif defined( __WINDOWS__ )
+ return wxCheckWin32Permission(path, GENERIC_EXECUTE);
+#else
+ wxUnusedVar(path);
+ // TODO
+ return false;
+#endif
+}
+
+// Return the type of an open file
+//
+// Some file types on some platforms seem seekable but in fact are not.
+// The main use of this function is to allow such cases to be detected
+// (IsSeekable() is implemented as wxGetFileKind() == wxFILE_KIND_DISK).
+//
+// This is important for the archive streams, which benefit greatly from
+// being able to seek on a stream, but which will produce corrupt archives
+// if they unknowingly seek on a non-seekable stream.
+//
+// wxFILE_KIND_DISK is a good catch all return value, since other values
+// disable features of the archive streams. Some other value must be returned
+// for a file type that appears seekable but isn't.
+//
+// Known examples:
+// * Pipes on Windows
+// * Files on VMS with a record format other than StreamLF
+//
+wxFileKind wxGetFileKind(int fd)
+{
+#if defined __WINDOWS__ && !defined __WXWINCE__ && defined wxGetOSFHandle
+ switch (::GetFileType(wxGetOSFHandle(fd)) & ~FILE_TYPE_REMOTE)
+ {
+ case FILE_TYPE_CHAR:
+ return wxFILE_KIND_TERMINAL;
+ case FILE_TYPE_DISK:
+ return wxFILE_KIND_DISK;
+ case FILE_TYPE_PIPE:
+ return wxFILE_KIND_PIPE;
+ }
+
+ return wxFILE_KIND_UNKNOWN;
+
+#elif defined(__UNIX__)
+ if (isatty(fd))
+ return wxFILE_KIND_TERMINAL;
+
+ struct stat st;
+ fstat(fd, &st);
+
+ if (S_ISFIFO(st.st_mode))
+ return wxFILE_KIND_PIPE;
+ if (!S_ISREG(st.st_mode))
+ return wxFILE_KIND_UNKNOWN;
+
+ #if defined(__VMS__)
+ if (st.st_fab_rfm != FAB$C_STMLF)
+ return wxFILE_KIND_UNKNOWN;
+ #endif
+
+ return wxFILE_KIND_DISK;
+
+#else
+ #define wxFILEKIND_STUB
+ (void)fd;
+ return wxFILE_KIND_DISK;
+#endif
+}
+
+wxFileKind wxGetFileKind(FILE *fp)
+{
+ // Note: The watcom rtl dll doesn't have fileno (the static lib does).
+ // Should be fixed in version 1.4.
+#if defined(wxFILEKIND_STUB) || wxONLY_WATCOM_EARLIER_THAN(1,4)
+ (void)fp;
+ return wxFILE_KIND_DISK;
+#elif defined(__WINDOWS__) && !defined(__CYGWIN__) && !defined(__WATCOMC__) && !defined(__WINE__)
+ return fp ? wxGetFileKind(_fileno(fp)) : wxFILE_KIND_UNKNOWN;
+#else
+ return fp ? wxGetFileKind(fileno(fp)) : wxFILE_KIND_UNKNOWN;
+#endif
+}
+
projects / wxWidgets.git / blobdiff