+
+ return filters.GetCount();
+}
+
+#if defined( __WINDOWS__ )
+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
+ bool isdir = wxDirExists(path);
+ if ( isdir && wxGetOsVersion() == wxOS_WINDOWS_9X )
+ {
+ // FAT directories always allow all access, even if they have the
+ // readonly flag set
+ return true;
+ }
+
+ HANDLE h = ::CreateFile
+ (
+ path.c_str(),
+ access,
+ FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+ NULL,
+ OPEN_EXISTING,
+ isdir ? 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 access(wxConvFile.cWX2MB(path), 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 access(wxConvFile.cWX2MB(path), 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 access(wxConvFile.cWX2MB(path), 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 __WXMSW__ && !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;
+
projects / wxWidgets.git / blobdiff